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Kuze A.,Japan Aerospace Exploration Agency | Suto H.,Japan Aerospace Exploration Agency | Shiomi K.,Japan Aerospace Exploration Agency | Urabe T.,Japan Aerospace Exploration Agency | And 5 more authors.
Atmospheric Measurement Techniques | Year: 2012

The Thermal And Near infrared Sensor for carbon Observation Fourier-Transform Spectrometer (TANSO-FTS) onboard the Greenhouse gases Observing SATellite (GOSAT) (nicknamed "Ibuki") has been providing global space-borne observations of carbon dioxide (CO2) and methane (CH4) since 2009. In this paper, we first describe the version V150.151 operational Level 1 algorithms that produce radiance spectra from the acquired interferograms. Second, we will describe the on-orbit characteristics and calibration of TANSO-FTS. Overall function and performance such as signal to noise ratio and spectral resolution are within design objectives. Correction methods of small on-orbit degradations and anomalies, which have been found since launch, are described. Lastly, calibration of TANSO Cloud and Aerosol Imager (TANSO-CAI) are summarized. © 2012 Author(s). Source


Kuze A.,Japan Aerospace Exploration Agency | Suto H.,Japan Aerospace Exploration Agency | Shiomi K.,Japan Aerospace Exploration Agency | Kawakami S.,Japan Aerospace Exploration Agency | And 7 more authors.
Atmospheric Measurement Techniques | Year: 2016

A data set containing more than 6 years (February 2009 to present) of radiance spectra for carbon dioxide (CO2) and methane (CH4) observations has been acquired by the Greenhouse gases Observing SATellite (GOSAT, available at http://data.gosat.nies.go.jp/GosatUserInterfaceGateway/guig/GuigPage/open.do), nicknamed "Ibuki", Thermal And Near infrared Sensor for carbon Observation Fourier Transform Spectrometer (TANSOFTS). This paper provides updates on the performance of the satellite and TANSO-FTS sensor and describes important changes to the data product, which has recently been made available to users. With these changes the typical accuracy of retrieved column-averaged dry air mole fractions of CO2 and CH4 (XCO2 and XCH4, respectively) are 2 ppm or 0.5% and 13 ppb or 0.7 %, respectively. Three major anomalies of the satellite system affecting TANSO-FTS are reported: a failure of one of the two solar paddles in May 2014, a switch to the secondary pointing system in January 2015, and most recently a cryocooler shutdown and restart in August 2015. The Level 1A (L1A) (raw interferogram) and the Level 1B (L1B) (radiance spectra) of version V201 described here have longterm uniform quality and provide consistent retrieval accuracy even after the satellite system anomalies. In addition, we discuss the unique observation abilities of GOSAT made possible by an agile pointing mechanism, which allows for optimization of global sampling patterns. © Author(s) 2016. Source


Teramoto R.,NEC Informatec Systems Ltd. | Kashima H.,Tokyo University of Information Sciences
Journal of Molecular Graphics and Modelling | Year: 2010

Accurate prediction of protein-ligand binding affinities for lead optimization in drug discovery remains an important and challenging problem on scoring functions for docking simulation. In this paper, we propose a data-driven approach that integrates multiple scoring functions to predict protein-ligand binding affinity directly. We then propose a new method called multiple instance regression based scoring (MIRS) that incorporates unbound ligand conformations using multiple scoring functions. We evaluated the predictive performance of MIRS using 100 protein-ligand complexes and their binding affinities. The experimental results showed that MIRS outperformed the 11 conventional scoring functions including LigScore, PLP, AutoDock, G-Score, D-Score, LUDI, F-Score, ChemScore, X-Score, PMF, and DrugScore. In addition, we confirmed that MIRS performed well on binding pose prediction. Our results reveal that it is indispensable to incorporate unbound ligand conformations in both binding affinity prediction and binding pose prediction. The proposed method will accelerate efficient lead optimization on structure-based drug design and provide a new direction to designing of new scoring score functions. © 2010 Elsevier Inc. Source


Masaru A.,Corporate Business Development and Marketing | Eiki I.,NEC Informatec Systems Ltd.
NEC Technical Journal | Year: 2013

This paper discusses a solution that aims to prevent wandering by geriatric patients and also associated accidents. This solution is achieved by combining a motion detection camera and a face recognition camera. The motion detection camera does not detect the entry of people but only those exiting, while the face recognition camera automatically identifies a person who is exiting. When these two cameras are used in conjunction, it is possible to build a system that sends alerts to the staff by detecting the exiting of only those facility residents/users who are in need of nursing care and assistance. Face recognition does not put a burden on the facility residents/users as does the carrying of an RFID tag and it is free from management problems such as loss or equipment failure. Besides, RFID use is more costly because malfunctioning caused by electrical signal leakage must be prevented. The use of a camera is therefore a more rational solution. In addition to describing the system, this paper also discusses the validation testing results. Source


A text in a corpus including a set of world wide web (web) pages is analyzed. At least one word appropriate for a document type set according to a voice recognition target is extracted based on an analysis result. A word set is generated from the extracted at least one word. A retrieval engine is caused to perform a retrieval process using the generated word set as a retrieval query of the retrieval engine on the Internet, and a link to a web page from the retrieval result is acquired. A language model for voice recognition is generated from the acquired web page.

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