Publications

• Tian Hao, Masayuki Iwai, Yoshito Tobe, Kaoru Sezaki
  "ESMO: An Energy-Efficient Mobile Node Scheduling Scheme for Sound Sensing,"
  IEICE Transactions on Communications, Special Issue: Fundamental Issues on Deployment of Ubiquitous Sensor Networks, 2011. (To be published.)
  
• Niwat Thepvilojanapong, Shin'ichi Konomi, Yoshito Tobe
  "A Study of Cooperative Human Probes in Urban Sensing Environments,"
  IEICE Transactions on Communications, 2011. (To be published.)
  
• Toru Ubukata, Kenji Terabayashi, Alessandro Moro, Kazunori Umeda
  "Multi-Object Segmentation in a Projection Plane Using Subtraction Stereo,"
  Proc. 20th Int. Conf. on Pattern Recognition (ICPR2010), August 2010. (To be published.)
  
• Alessandro Moro, Kenji Terabayashi, Kazunori Umeda
  "Detection of Moving Objects with Removal of Cast Shadows and Periodic Changes Using Stereo Vision,"
  Proc. 20th Int. Conf. on Pattern Recognition (ICPR2010), August 2010. (To be published.)
  
• Kota Irie, Masahito Takahashi, Kenji Terabayashi, Hidetoshi Ogishima and Kazunori Umeda
  "Skin Color Registration using Recognition of Waving Hands,"
  J. Robotics and Mechatronics, Vol.22, No.3, June 2010. (To be published.)
  
• A. Moro, K. Terabayashi, K. Umeda, E. Mumolo
  "A Framework for the Detection and Interaction with Pedestrian and Objects in an Unknown Environment,"
  Proc. of Seventh International Conference on Network Sensing Systems (INSS2010), June 2010, Germany. (To be published.)
  
• Manabu Miyazaki, Ryutaro Nakata, Masayuki Iwai, Yoshito Tobe
  "RW-Link：Connection of Things,"
  IEEE 7th International Conference on Networked Sensing Systems (INSS 2010), Poster Session, June 2010, Germany.
  
• Takashi Kagamoto, Atsuhiro Takagi, Yutaka Namiki, Niwat Thepvilojanapong, Yoshito Tobe
  "TScan: A Practical Micro-Climate Sensor Network,"
  IEEE 7th International Conference on Networked Sensing Systems (INSS 2010), Poster Session, June 2010, Germany.
  
• Yutaka Namiki
  "IPNavi:A Self-Rotating Paper Map,"
  IEEE 7th International Conference on Networked Sensing Systems (INSS 2010), Workshop: The 1st International Workshop on Human Behavior Sensing (HBS2010), June 2010, Germany.
  
• Yutaka Namiki, Ryutaro Nakata, Shin'ichi Konomi, Yoshito Tobe
  "A Self-Aligning Paper Map for Pedestrian Navigation,"
  Adjunct Proceedings of Pervasive 2010 - Demos, pp.33-36, May 2010, Finland.
  
• Yoshito Tobe, Shin'ichi Konomi
  "Ubiquitous Computing, Sensing, and Data Management in the OSOITE Project,"
  Presented at the 3rd Asia-Europe Workshop on Ubiquitous Computing (AEWUC 2010), May 2010, Helsinki, Finland.
  
• Keiji Sugo, Manabu Miyazaki, Shin'ichi Konomi, Masayuki Iwai, Yoshito Tobe
  "BISCAY: Extracting Riding Context from Bike Ride Data,"
  The Databese Systems for Advanced Applications (DASFAA2010) Demo, April 2010, Japan.
  
• Niwat Thepvilojanapong, Shin'ichi Konomi, Jun'ichi Yura, Takeshi Iwamoto, Susanna Pirttikangas, Yasuyuki Ishida, Masayuki Iwai, Yoshito Tobe, Hiroyuki Yokoyama, Jin Nakazawa, Hideyuki Tokuda
  "Aquiba: An Energy-Efficient Mobile Sensing System for Collaborative Human Probes,"
  The Databese Systems for Advanced Applications (DASFAA2010) Demo, April 2010, Japan.
  
• Kazumasa Oshima, Yasuyuki Ishida, Shin'ichi Konomi, Niwat Thepvilojanapong, Yoshito Tobe
  "A Shoes-Integrated Sensing System for Context-Aware Human Probes,"
  The Databese Systems for Advanced Applications (DASFAA2010) Demo, April 2010, Japan.
  
• Niwat Thepvilojanapong, Takahiro Ono, and Yoshito Tobe
  "A Deployment of Fine-Grained Sensor Network and Empirical Analysis of Urban Temperature,"
  MDPI Journal of Sensors, Vol.10, No.3, pages 2217--2241, March 2010.
  

• Niwat Thepvilojanapong, Shin'ichi Konomi, Jun'ichi Yura, Takeshi Iwamoto, Susanna Pirttikangas, Yasuyuki Ishida, Masayuki Iwai, Yoshito Tobe, Hiroyuki Yokoyama, Jin Nakazawa, and Hideyuki Tokuda
  "Exploring Energy-Efficient Human Probes for High-Fidelity Sensing in Urban Environments,"
  in Proceedings of the 5th International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP 2009), page.61-66, December 2009.
  
• Kazumasa Oshima, Yasuyuki Ishida, Shin'ichi Konomi, Niwat Thepvilojanapong, and Yoshito Tobe
  "Demo Abstract: A Human Probe for Measuring Walkability,"
  The 7th ACM International Conference on Embedded Networked Sensor Systems (SenSys 2009), Berkeley, California, USA, November 2009.
  
• Kenji Terabayashi, Yuki Hashimoto, Kazunori Umeda
  "Measurement of Pedestrian Groups Using Subtraction Stereo,"
  The 5th International Symposium on Visual Computing (ISVC2009), Part II, pp.1002-1010, November 2009.
  
• Keisuke Kanai, Hiroki Ishizuka, Atsuhiro Takagi, Yasuyuki Ishida, Masayuki Iwai, Niwat Thepvilojanapong, Shin’ichi Konomi, Kaoru Sezaki and Yoshito Tobe
  "A Micro-Climate Viewer with Combination of Heterogeneous Sensor Sources,"
  The Asian Workshop on Sensing and Visualization of City-Human Interaction (AWSVCI 2009), Beijing, China, August 2009.
  
• Tatsuya Morita, Shin’ichi Konomi and Yoshito Tobe
  "Design and Implementation of Real-Time Query Processing Mechanisms for City-Human Interaction,"
  The Asian Workshop on Sensing and Visualization of City-Human Interaction (AWSVCI 2009), Beijing, China, August 2009.
  
• Kazumasa Oshima, Yasuyuki Ishida, Shin’ichi Konomi, Niwat Thepvilojanapong and Yoshito Tobe
  "Integrating Pressure Sensors and Accelerometers in Footwear-Based Human Probes,"
  The Asian Workshop on Sensing and Visualization of City-Human Interaction (AWSVCI 2009), Beijing, China, August 2009.
  
• Yuma Hoshikawa, Kenji Terabayashi and Kazunori Umeda
  "Human Tracking Using Subtraction Stereo and Color Information,"
  The Asian Workshop on Sensing and Visualization of City-Human Interaction (AWSVCI 2009), Beijing, China, pp.5-8, August 2009.
  
• Alessandro Moro, Kazunori Umeda, Kenji Terabayashi and Enzo Mumolo
  "Auto-adaptive threshold and shadow detection approaches for pedestrians detection,"
  The Asian Workshop on Sensing and Visualization of City-Human Interaction (AWSVCI 2009), Beijing, China, pp.9-12, August 2009.
  
• Yoshito Tobe
  "Overview of the OSOITE project,"
  The 2nd Asia-Europe Workshop on Ubiquitous Computing 2009 (AEWUC'09), Shizuoka, Japan, August 2009.
  
• Shin'ichi Konomi
  "Opportunities and challenges of supporting mobile collaboration using sensors: lessons learnt from a preliminary field trial of Askus,"
  The 2nd Asia-Europe Workshop on Ubiquitous Computing 2009 (AEWUC'09), Shizuoka, Japan, August 2009.
  
• Niwat Thepvilojanapong
  "A Preliminary Investigation of Human Probes for Urban Sensing Environments,"
  The 2nd Asia-Europe Workshop on Ubiquitous Computing 2009 (AEWUC'09), Shizuoka, Japan, August 2009.
  
• Niwat Thepvilojanapong, Yasunori Yakiyama, Oru Mihirogi, Masayuki Iwai, Kazunori Umeda, Yoshito Tobe, and Ryosuke Shibasaki
  "Evaluating People's Attention in the Real World,"
  The ICROS-SICE International Joint Conference 2009 (ICCAS-SICE 2009), pp.3702-3709, August 2009.
  
• Keiji Sugo, Masayuki Iwai, Yoshito Tobe
  "BISCAY:Bike-to-Bike Sensor Network for Context Acquisition of Cycling Roads,"
  The 3rd International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2009), June 2009.
  
• Atsuhiro Takagi, Masayuki Iwai, Kaoru Sezaki, Yoshito Tobe
  "Probing Stick: Extraction of Road Status Using Accelerometor,"
  The 6th International Conference on Network Sensing Systems (INSS2009), pp.114-116, June 2009.
  
• Shunsuke Hijikata, Kenji Terabayashi, Kazunori Umeda
  "A Simple Indoor Self-Localization System Using Infrared LEDs,"
  The 6th International Conference on Network Sensing Systems (INSS2009), pp.45-51, June 2009.
  
• Kenji Terabayashi, Yuki Hashimoto, Yuma Hoshikawa, Kazunori Umeda
  "Measurement of Pedestrians in Urban Environment Using Subtraction Stereo,"
  The 6th International Conference on Network Sensing Systems (INSS2009), pp.240, June 2009.
  
• Yasuyuki Ishida, Niwat Thepvilojanapong, and Yoshito Tobe
  "Identification of Environment Using Signals From Users,"
  The International Workshop on Sensor Network Technologies for Information Explosion Era (SeNTIE 2009), Taipei, Taiwan, May 2009.
  
• Shin'ichi Konomi, Niwat Thepvilojanapong, Ryohei Suzuki, Susanna Pirttikangas, Kaoru Sezaki, and Yoshito Tobe
  "Askus: Amplifying Mobile Actions,"
  The 7th International Conference on Pervasive Computing (Pervasive 2009), Nara, Japan, May 2009.
  
• Niwat Thepvilojanapong, Yasunori Yakiyama, Oru Mihirogi, Masayuki Iwai, Keisuke Aizawa, Kazunori Umeda, Yoshito Tobe, and Ryosuke Shibasaki
  "SPAL: Appraising People's Attention in The Real World,"
  The 7th International Conference on Pervasive Computing (Pervasive 2009), Demonstration, Nara, Japan, May 2009.
  
• Susanna Pirttikangas, Yoshito Tobe, and Niwat Thepvilojanapong
  "Smart Environments for Occupancy Sensing and Services,"
  Handbook of Ambient Intelligence and Smart Environments edited by Hideyuki Nakashima, Juan Augusto, and Hamid Aghajan, Springer, 2009.
  
• Yasunori Yakiyama, Niwat Thepvilojanapong, Masayuki Iwai, Oru Mihirogi, Kazunori Umeda, and Yoshito Tobe
  "Observing Real-World Attention by a Laser Scanner,"
  IPSJ Transactions on Advanced Computing Systems (ACS), March 2009.
  
• Yoshito Tobe
  "Human Probes: Concept and Issues"
  Finnish-Japanese Workshop on Ubiquitous Computing and Urban Lives (FJWUU 2009), March 2009.
  
• Yasuyuki Ishida
  "Extraction of Environmental Information based on Walking Signals"
  Finnish-Japanese Workshop on Ubiquitous Computing and Urban Lives (FJWUU 2009), March 2009.
  
• Keisuke Kanai
  "Real-Time Query for Massive Sensor Databases"
  Finnish-Japanese Workshop on Ubiquitous Computing and Urban Lives (FJWUU 2009), March 2009.
  
• Masayuki Iwai, Yoshito Tobe and Hideyuki Tokuda
  "A Flexible Modeling Engine Enabling Inter-Service Management"
  IPSJ Journal Vol.50 No.3 pp973-pp991 (Mar.2009)
  
• Kazunori Umeda, Tatsuya Nakanishi, Yuuki Hashimoto, Kota Irie, and Kenji Terabayashi
  "Subtraction Stereo -A Stereo Camera System That Focuses On Moving Regions -"
  Proc. of SPIE-IS&T Electronic Imaging, Vol.7239 Three-Dimensional Imaging Metrology, 723908, Jan. 2009.

• Hong yang Chen, Marcelo.H.T.Martins, Pei Huang, Hing Cheung So, and Kaoru Sezaki
  "Cooperative node localization for mobile sensor networks,"
  The IEEE/IFIP International Conference On Embedded and Ubiquitous Computing (EUC 2008), vol.I, pp.302-308, Shanghai, China, December 2008.
  
• Kota Irie, Masaki Wada and Kazunori Umeda
  "Construction of an Intelligent Room using Distributed Camera System,"
  Stereo Vision edited by Asim Bhatti, InTech Education and Publishing, ISBN 978-953-7619-22-0, pp.121-130, November 2008.
  
• Niwat Thepvilojanapong, Shin'ichi Konomi, Yasuyuki Ishida, Ryohei Suzuki, Kaoru Sezaki, and Yoshito Tobe
  "An Implicit Folksonomy Approach Through Embedded Sensing Systems,"
  The Proceedings of the International Workshop on Integrating Taxonomies and Folksonomies for Enhanced Knowledge Navigation (ITFEKN 2008), pp.1-9, Yokohama, Japan, November 2008.
  
• Yasuyuki Ishida, Shin'ichi Konomi, Niwat Thepvilojanapong, Ryohei Suzuki, Kaoru Sezaki, and Yoshito Tobe
  "An Implicit and User-Modifiable Urban Sensing Environment,"
  The Proceedings of the International Workshop on Urban, Community, and Social Applications of Networked Sensing Systems (UrbanSense 2008), pp.36-40, Raleigh, North Carolina, USA, November 2008.
  
• Hongyang Chen, Pei Huang, Marcelo.H.T.Martins, Hing Cheung So, and Kaoru Sezaki
  "Novel centroid localization algorithm for three-dimensional wireless sensor networks,"
  The 4th IEEE International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM 2008), pp.1-4, Dalian, China, October 2008.
  
• Takahiro Ono, Keisuke Kanai, Hiroki Ishizuka, Niwat Thepvilojanapong, Masayuki Iwai, and Yoshito Tobe
  "Analysis of Fine-Grained Urban Temperature Collected with A Sensor Network,"
  The 7th IEEE Conference on Sensors (IEEE SENSORS 2008), pp.712-715, Lecce, Italy, October 2008.
  
• Yoh Shiraishi and Yoshito Tobe
  "OSOITE: developing database architecture for uban sensing and real-world search,"
  The 7th International Conference on ASIA GIS 2008, page 89, Busan, South Korea, September 2008.
  
• Niwat Thepvilojanapong, Takahiro Ono, and Yoshito Tobe
  "Time Series Analysis on Sensor Database,"
  The 7th International Conference on ASIA GIS 2008, page 90, Busan, South Korea, September 2008.
  
• Ryohei Suzuki, Yasuyuki Ishida, Marcelo H. T. Martins, Yoshito Tobe, Shin'ichi Konomi, and Kaoru Sezaki
  "Integrating Geospatial and Sensor Data in a Human Probe Environment,"
  The 7th International Conference on ASIA GIS 2008, page 91, Busan, South Korea, September 2008.
  
• Tatsuya Nakanishi, Kazunori Umeda
  "Mouth Motion Recognition for Intelligent Room Using DP Matching,"
  The Int. Conf. on Machine Automation (ICMA2008), pp.207-210, September 2008.
  
• Hongyang Chen, Kaoru Sezaki, Ping Deng, and Hing Cheung So
  "An improved DV-hop localization algorithm with reduced node location error for wireless sensor networks,"
  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E91-A, no.8, pp.2232-2236, August 2008.
  
• Yasunori Yakiyama, Oru Mihirogi, Niwat Thepvilojanapong, Kazunori Umeda, and Yoshito Tobe
  "SPAL: A Sensor of Physical-World Attention using Laser Scanning,"
  The 14th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA 2008), Work-in-Progress, pp.20-23, Kaohsiung, Taiwan, August, 2008.
  
• Ryutaro Nakata
  "Disributed Links of Mono,"
  Asian Workshop on Ubiquitous and Embedded Computing (AWUEC), Taiwan, August, 2008.
  
• Keiji Sugo
  "A Human Probe Approach for Cyclists,"
  Asian Workshop on Ubiquitous and Embedded Computing (AWUEC), Taiwan, August, 2008.
  
• Yasuyuki Ishida
  "Sensorized Map: Association of Human Information with Map,"
  Asian Workshop on Ubiquitous and Embedded Computing (AWUEC), Taiwan, August, 2008.
  
• Yoichi Nakamura
  "A Structured Overlay Network Considering Location,"
  Asian Workshop on Ubiquitous and Embedded Computing (AWUEC), Taiwan, August, 2008.
  
• Naoya Namatame, Jin Nakazawa, Kazunori Takashio and Hideyuki Tokuda
  "Life2Guard: A Physical Disorder Detection in Private Rooms,"
  The 2nd International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2008), Turku, Finland, July 2008.
  
• Yuuki Hashimoto, Yusuke Matsuki, Tatsuya Nakanishi, Kazunori Umeda, Kei Suzuki, and Kazunori Takashio
  "Detection of pedestrians using subtraction stereo,"
  The 2nd International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2008), Turku, Finland, July 2008.
  
• Niwat Thepvilojanapong and Yoshito Tobe
  "TomuDB: Heterogeneous and multi-resolution database for urban sensor information,"
  GeoWeb 2008 Conference, Vancouver, Canada, July 2008.
  
• Hongyang Chen, Kaoru Sezaki, Ping Deng, and H.C.So
  "An improved DV-hop localization algorithm for wireless sensor networks,"
  The Conference on Industrial Electronics and Applications (ICIEA 2008), pp.1557-1561, Singapore, June 2008.
  
• Niwat Thepvilojanapong, Masayuki Iwai, Koichi Yamada, Yoh Shiraishi, Kazunori Takashio, Kazunori Umeda, Yosuke Tamura, and Yoshito Tobe
  "OSOITE: Towards Real-World Search,"
  The 17th IASTED International Conference on Applied Simulation and Modelling (ASM 2008), Corfu, Greece, June 2008.
  
• Hiroki Ishizuka
  "Fine-Grained Urban Sensing and Computing,"
  International Workshop on Advanced Integrated Sensing Technologies for Safety and Security of Daily Life (IWAIST2008), Kanazawa, Japan, June 2008.
  
• Kazunori Umeda
  "Detection of Pedestrians Using Subtraction Stereo,"
  International Workshop on Advanced Integrated Sensing Technologies for Safety and Security of Daily Life (IWAIST2008), Kanazawa, Japan, June 2008.
  
• Yoh Shiraishi
  "An Integration Method of Multi-resolutional Sensor Data Utilizing Spatial Interpolation,"
  International Workshop on Advanced Integrated Sensing Technologies for Safety and Security of Daily Life (IWAIST2008), Kanazawa, Japan, June 2008.
  
• Yoshito Tobe, Niwat Thepvilojanapong, Masayuki Iwai, Koichi Yamada, Yoh Shiraishi, Kazunori Takashio, Kazunori Umeda, and Yosuke Tamura
  "Overview of OSOITE,"
  International Workshop on Advanced Integrated Sensing Technologies for Safety and Security of Daily Life (IWAIST2008), Kanazawa, Japan, June 2008.
  
• Tatsuro Endo, Ayumi Banno and Yosuke Tamura
  "Research of Sensor Networks by Utilizing Web API - Urban Navigation System with Data of Sensor Networks -,"
  The 5th International Conference on Networked Sensing Systems (INSS 2008), pp. 166-169, Kanazawa, Japan, June 2008.
  
• Kei Suzuki, Kazunori Takashio, Hideyuki Tokuda, Masaki Wada, Yusuke Matsuki, and Kazunori Umeda
  "Toward Real-Time Extraction of Pedestrian Contexts with Stereo Camera,"
  The 5th International Conference on Networked Sensing Systems (INSS 2008), pp. 115-118, Kanazawa, Japan, June 2008.
  
• Ryohei Suzuki, Marcelo H. T. Martins, Yasuyuki Ishida, Yoshito Tobe, Shin’ichi Konomi, and Kaoru Sezaki
  "An RFID-Based Human-Probe Positioning System,"
  Demonstration session, The 5th International Conference on Networked Sensing Systems (INSS 2008), page 248, Kanazawa, Japan, June 2008.
  
• Kuniaki Kawabata, Hideo Sato, Tsuyoshi Suzuki, and Yoshito Tobe
  "Wireless Camera Node with Passive Pendulum Mechanism,"
  Demonstration session, The 5th International Conference on Networked Sensing Systems (INSS 2008), page 255, Kanazawa, Japan, June 2008.
  
• Yasuyuki Ishida, Ryohei Suzuki, Kaoru Sezaki, and Yoshito Tobe
  "Sensorized Map Using Human Probe,"
  Poster session, The 5th International Conference on Networked Sensing Systems (INSS 2008), page 231, Kanazawa, Japan, June 2008.
  
• Yoichi Nakamura, Hiroki Saito, Niwat Thepvilojanapong, and Yoshito Tobe
  "GeoSkip: A Structured Overlay Network for Location-based Service,"
  Poster session, The 5th International Conference on Networked Sensing Systems (INSS 2008), page 238, Kanazawa, Japan, June 2008.
  
• Yasuyuki Ishida, Ryohei Suzuki, Kaoru Sezaki, Niwat Thepvilojanapong, and Yoshito Tobe
  "WINFO+: Extracting Environmental Information Using Walking Signals,"
  Demonstration session, The 5th International Conference on Pervasive Computing (Pervasive 2008), pp.107-110, Sydney, Australia, May 2008.
  
• Keisuke Kanai, Hiroki Ishizuka, and Yoshito Tobe
  "Tomu-R: Real-Time Query for Massive Sensor Databases,"
  Internet of Things 2008, pp.141-144, Zurich, Switzerland, March 2008.
  

• Takahiro Ono, Hiroki Isizuka, Kanoko Ito, Yasuyuki Ishida, Shohei Miyazaki, Oru Mihirogi, and Yoshito Tobe,
  "UScan: Towards Fine-Grained Urban Sensing,"
  International Workshop on Real Field Identification (RFId 2007), pp.18-27, Tokyo, Japan, Nov. 2007.
  [pdf]
  
• Yoh Shiraishi, Niwat Thepvilojanapong, Yosuke Tamura, Tatsuro Endo, Koichi Yamada, Nayuta Ishii, Hiroki Ishizuka, Keisuke Kanai, and Yoshito Tobe,
  "TomuDB: Multi-Resolution Queries in Heterogeneous Sensor Networks through Overlay Network,"
  Poster session, the 5th ACM Conference on Embedded Networked Sensor Systems (SenSys 2007), pp.419-420, Sydney, Australia, Nov. 2007.
  
• Yoh Shiraishi,
  "A User-centric Approach for Interactive Visualization and Mapping of Geo-sensor Data,"
  BoF paper, the 4th International Conference on Networked Sensing Systems (INSS 2007), pp.134-137, Braunschweig, Germany, June 2007.
  
• Kota Irie, Masaki Wada, and Kazunori Umeda:
  "3D Measurement by Distributed Camera System for Constructing an Intelligent Room,"
  BoF paper, the 4th International Conference on Networked Sensing Systems (INSS 2007), pp.118-121, Braunschweig, Germany, June 2007.
  
• Hiroki Ishizuka and Yoshito Tobe,
  "SenriGan: A sensed-point-directed geographic routing for sensor networks,"
  BoF paper, the 4th International Conference on Networked Sensing Systems (INSS 2007), pp.57-60, Braunschweig, Germany, June 2007.
  
• Tatsuro Endo and Yosuke Tamura,
  "PATH: Phenomenon Pattern Template Handling - Design of an Application framework for Sensor Networks -,"
  International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2007), pp.39-46, Braunschweig, Germany, June 2007.
  
• Takahiro Ono, Ryohei Suzuki, and Yoshito Tobe,
  "An efficient data collection in sensor networks,"
  International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2007), pp.15-21, Braunschweig, Germany, June 2007.
  
• Hiroki Ishizuka and Yoshito Tobe,
  "A Sensed-Point-Oriented Geographic Routing for Camera Networks,"
  Demonstration, International Conference on Mobile Data Management (MDM 2007), pp.209-211, Mannheim, Germany, May 2007.
  
• Masatoshi Sekine, Shojiro Takeuchi, and Kaoru Sezaki,
  "An Energy-Efficient MAC Protocol with Lightweight and Adaptive Scheduling for Wireless Sensor Networks,"
  IEEE Radio and Wireless Symposium (RWS 2007), pp161-164, Long Beach, CA, USA, Jan. 2007.