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Realization of rearrangement task by multiple robots
Yoshihiro Takebe,Norisuke Fujii,Reiko Inoue,Jun Ota 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
We propose a method for performing rearrangement tasks in a real environment using multiple mobile robots.In our proposed method, robots develop an offline plan, convert the plan into a sequence of behaviors and carry out these behaviors. To perform the rearrangement task, robots need to carry out at least five behaviors. We show experimental results of rearrangement tasks in a real environment which includes a static obstacle and a narrow space.
정치망의 양망과정에 있어서 멸치어군의 행동에 관한 연구
김문관,정상희양,박정식 제주대학교 해양연구소 1996 해양자원연구소연구보고 Vol.20 No.-
The moving behaviour of anchovy schools (There were small schools of sardine and round-herring in these anchovy schools) in the hauling process of a large scale set-net was investigated using a scanning sonar. in the Kishihata set-net fishing ground located in Nanao city Ishigawa prefecture , Japan from Dec 1st to Dec 4th. 1992. The moving behaviour of anchovy schools in the hauling process a large scale set-net made the term of moving narrowed from the front of the first funnel-net to the second funnel-net as the hauling proceeded. We found that when the ship of picking up the net approched to the second funnel-net, the anchovy school entered in the second bag-net fast hard. The moving speed before hauling and during the hauling process was most of 50cm/sec and below and there was no difference in the moving speed.
Masaki Norimoto,Yoshihiro Sakuma,Miyako Suzuki,Sumihisa Orita,Kazuyo Yamauchi,Gen Inoue,Yasuchika Aoki,Tetsuhiro Ishikawa,Masayuki Miyagi,Hiroto Kamoda,Gou Kubota,Yasuhiro Oikawa,Kazuhide Inage,Takesh 대한척추외과학회 2014 Asian Spine Journal Vol.8 No.5
Study Design: Experimental animal study. Purpose: To evaluate pain-related behavior and changes in glial activity in the spinal dorsal horn after combined sciatic nerve compression and nucleus pulposus (NP) application in rats. Overview of Literature: Mechanical compression and inflammation caused by prostaglandins and cytokines at disc herniation sites induce pain. Structural changes and pain-associated cytokines in the dorsal root ganglia and spinal dorsal horn contribute to prolonged pain. Glial cells in the spinal dorsal horn may also function in pain transmission. Methods: The sciatic nerve was compressed with NP for 2 seconds using forceps in the NP+nerve compression group; the shamoperated group received neither compression nor NP; and the control group received no operation. Mechanical hyperalgesia was measured for 3 weeks using von Frey filaments. Glial activity in the spinal dorsal horn was examined 7 days and 14 days postsurgery using anti-glial fibrillary acidic protein and anti-Ionized calcium binding adaptor molecule-1 antibodies to detect astrocytes and microglia, respectively. Results: Mechanical hyperalgesia was detected throughout the 14-day observation in the NP+nerve compression group, but not in control or sham-operated groups (p <0.05). Both astrocytes and microglia were significantly increased in the spinal dorsal horn of the NP+nerve compression group compared to control and sham groups on days 7 and 14 (p <0.05). Conclusions: Nerve compression with NP application produces pain-related behavior, and up-regulates astrocytes and microglia in the spinal dorsal horn, suggesting that these glia may be related to pain transmission.
Yoshiyuki Matsuyama,Yoshihiro Sakuma,Miyako Suzuki,Sumihisa Orita,Kazuyo Yamauchi,Gen Inoue,Yasuchika Aoki,Tetsuhiro Ishikawa,Masayuki Miyagi,Hiroto Kamoda,Gou Kubota,Yasuhiro Oikawa,Kazuhide Inage,Ta 대한척추외과학회 2014 Asian Spine Journal Vol.8 No.5
Study Design: Experimental animal study. Purpose: To evaluate pain-related behavior and changes in nuclear factor-kappa B (NF-kB), receptor activator of NF-kB (RANK), and ligand (RANKL) in dorsal root ganglia (DRG) after combined sciatic nerve compression and nucleus pulposus (NP) application in rats. Overview of Literature: The pathological mechanisms underlying pain from lumbar-disc herniation have not been fully elucidated. RANKL are transcriptional regulators of inflammatory cytokines. Our aim was to evaluate pain-related behavior and RANKL expression in DRG after sciatic-nerve compression and application of NP in rats. Methods: Mechanical hyperalgesia and RANKL expression were assessed in three groups of rats: NP+sciatic nerve compression (2 seconds), sham-operated, and controls (n=20 each). Mechanical hyperalgesia was measured every other day for 3 weeks using von Frey filaments. RANKL expression in L5 DRGs was examined at five and ten days after surgery using immunohistochemistry. Results: Mechanical hyperalgesia was observed over the 12-day observation period in the NP+nerve compression group, but not in the control and sham-operated animal groups (p <0.05). RANKL immunoreactivity was seen in the nuclei of L5 DRG neurons, and its expression was significantly upregulated in NP+nerve compression rats compared with control and sham-operated rats (p <0.01). Conclusions: The exposure of sciatic nerves to mechanical compression and NP produces pain-related behavior and up-regulation of RANKL in DRG neurons. RANKL may play an important role in mediating pain after sciatic nerve injury with exposure to NP.
Tomoaki Okuda,Daiki Shishido,Yoshihiro Terui,Kentaro Fujioka,Ryoma Isobe,Yusuke Iwaki,Koji Funato,Kozo Inoue 한국대기환경학회 2018 Asian Journal of Atmospheric Environment (AJAE) Vol.12 No.1
Filter-based sampling techniques are the conventional way to collect particulate matter, but particles collected and entangled in the filter fibers are difficult to be removed and thus not suited for the following cell- and animal-based exposure experiments. Collecting aerosol particles in powder form using a cyclone instead of a filter would be a possible way to solve this problem. We developed a hybrid virtual-impactor/cyclone high-volume fine and coarse particle sampler and assessed its performance. The developed system achieved 50% collection efficiency with components having the following aerodynamic cut-off diameters: virtual impactor, 2.4 μm; fine-particle cyclone, 0.18-0.30 μm; and coarse-particle cyclone, 0.7 μm. The virtual impactor used in our set-up had good PM2.5 separation performance, comparable to that reported for a conventional real impactor. The newly developed sampler can collect fine and coarse particles simultaneously, in combination with exposure testing with collected fine- and coarse- particulate matter samples, should help researchers to elucidate the mechanism by which airborne particles result in adverse health effect in detail.