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Flow Evaluation of Pedestrian’s Field with Traffic Lines
Hideto Nishikado,Takahiro Iwata,Shigeru Takayama 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper describes a system to extracttraffic lines of pedestrians flow outdoors and the investigation ofdynamic characteristics by using the density and directiondistribution of them. These characteristics relate to the congestion and latent dangerousness of field. They are difficult parameters defined with static images. The timetransition of these characteristics shows the dynamic situations of them. Furthermore, this paper presents pedestrian’s field evaluation focused on flow. These characteristics parameters are profitablefor evaluation of environmental design.
A Novel Low-Voltage CMOS Voltage Reference Circuit Insensitive to VDD and Temperature Variations
Akira Nakajima,Takahiro Inoue,Akio Tsuneda,Kazuki Iwata 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
A novel low-voltage CMOS voltage reference circuit insensitive to VDD and temperature variations is proposed in this paper. A reference voltage with low temperature dependency is achieved by canceling the negative temperature dependency of MOSFET’s threshold voltage by the PTAT voltage. The output reference voltage of 510㎷ is realized and its temperature dependency is 39ppm/℃ in the temperature range from -20℃ to 80℃. The proposed circuit can work at the voltage supply of 0.9V.
THE SELENE MISSION AND JAPANESE LUNAR EXPLORATION SCENARIO
NODA HIROTOMO,HANADA HIDEO,KAWANO NOBUYUKI,IWATA TAKAHIRO The Korean Astronomical Society 2005 Journal of The Korean Astronomical Society Vol.38 No.2
We report the current status of Japanese lunar exploration SELENE (SELenological and ENgineering Explorer). As of the end of 2004, scientific instruments onboard the Main Orbiter are under final checkout before they are provided to the proto-flight-model (PFM) integration test. Also, we present the future perspectives of the lunar based instruments and facilities. 'In-situ Lunar Orientation Mea-surement (ILOM)' experiment measures the lunar rotation with high accuracy by tracking stars on the Moon with a small photo-zenith-tube type optical telescope. A basic idea of a radio telescope array of very low frequency range on the lunar far-side is also mentioned.
Dau, Pham Thi,Sakai, Hiroki,Hirano, Masashi,Ishibashi, Hiroshi,Tanaka, Yuki,Kameda, Kenji,Fujino, Takahiro,Kim, Eun-Young,Iwata, Hisato Academic Press 2013 Toxicological sciences Vol.131 No.1
<P>The constitutive androstane receptor (CAR) not only displays a high basal transcriptional activity but also acts as a ligand-dependent transcriptional factor. It is known that CAR exhibits different ligand profiles across species. However, the mechanisms underlying CAR activation by chemicals and the species-specific responses are not fully understood. The objectives of this study are to establish a high-throughput tool to screen CAR ligands and to clarify how CAR proteins from the Baikal seal (bsCAR) and the mouse (mCAR) interact with chemicals and steroid receptor coactivator 1 (SRC1). We developed the surface plasmon resonance (SPR) system to assess quantitatively the interaction of CAR with potential ligands and SRC1. The ligand-binding domain (LBD) of bsCAR and mCAR was synthesized in a wheat germ cell-free system. The purified CAR LBD was then immobilized on the sensor chip for the SPR assay, and the kinetics of direct interaction of CARs with ligand candidates was measured. Androstanol and androstenol, estrone, 17β-estradiol, TCPOBOP, and CITCO showed compound-specific but similar affinities for both CARs. The CAR-SRC1 interaction was ligand dependent but exhibited a different ligand profile between the seal and the mouse. The results of SRC1 interaction assay accounted for those of our previous in vitro CAR-mediated transactivation assay. In silico analyses also supported the results of CAR-SRC1 interaction; there is little structural difference in the ligand-binding pocket of bsCAR and mCAR, but there is a distinct discrimination in the helix 11 and 12 of these receptors, suggesting that the interaction of ligand-bound CAR and SRC1 is critical for determining species-specific and ligand-dependent transactivation over the basal activity. The SPR assays demonstrated a potential as a high-throughput screening tool of CAR ligands.</P>