http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
PROPOSAL OF COOPERATIVE STUDY TOWARD ESTABLISHING ASIACATALYST
Niwa, Miki 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.6
Cooperative studies on $quot;Reference Catalyst$quot; in Japan have proven to be very important and useful not only for characterization of catalysts but also for standardization of characterization techniques. This recognition has motivated us to propose $quot;Asiacatalyst$quot;, an extended version of Reference Catalyst, for similar cooperative activities in Asian countries.
Recent Development in Embryo Technology in Pigs - Review -
Niwa, K.,Funahashi, H. Asian Australasian Association of Animal Productio 1999 Animal Bioscience Vol.12 No.6
Technologies on preimplantation porcine embryos have been developed quickly and significantly. Successful development of systems for culture of porcine zygotes to the blastocyst stage has made it possible to utilize follicular oocytes for in vitro production of embryos and thus stimulated research on various embryo technologies. Recent technological development of embryo cryopreservation, separation of X- and Y-bearing spermatozoa and non-surgical embryo transfer has also made it easy to utilize in vivo- and in vitro-produced embryos for artificial manipulation to produce clones and transgenic pigs. Further progress in overcoming various problems associated with each embryo technology will result in acceptable efficiency to utilize porcine embryos with a high or increased quality. Combining these technologies will accelerate further expansion of the swine industry not only for meat production but also for the production of therapeutic recombinant proteins and xonografts.
Ram Niwas Gupta ..et al. KYUNGPOOK UNIVERSITY 1996 Kyungpook mathematical journal Vol.36 No.2
Let R be a ring, not necessarily with 1, Call x ∈ R potent (strongly potent) if x^(n)= x for some natural (even natural number) n > 1. The well known Jacobson's Commutavity Theorem [3] states : If every element x of a ring is potent, then R is commutative. Herstein [2, Theorem 3.13, pages 74] improved this : If, for every x, y in R, xy-yx is potent then R is commutative. Recently Machale [4] showed : If, for every x, y in R, xy+yx is strongly potent, then R is anticommutative. Yen [5] showed : If, for every x, y in R, either xy-yx is potent or xy + yx is strongly potent, then R is either commutative or anticommutative.Yen [6], also see [1], showed : If R is a semiprime ring and, for every x, y in R, xy +yx is potent, then R is commutative. The first author [1] showed : If R has 1 and, for every x; y in R, xy +yx is potent, then R is commutative. He also gave an example to show that in general if, for every x; y in R, xy +yx is potent, then R need not be commutative. Yen [7], proved : If R is a semiprime ring such that for every x; y in R, either xy + yx or xy-yx is potent then R is commutative. He conjectured in this paper : If R is a ring with 1 such that for every x, y in R either xy-yx is potent or xy + yx is potent, then R is commutative. Here we prove this conjecture. He also asked the following stronger question in a personal communication : Can we replace `R with 1' by `R^(2)= R' in the above conjecture? Here we answer this question also as an application of the above result.
Locomotion Control of Multi-Legged Robot based on Follow-the-Contact-Point Gait
Tomoya Niwa,Shinkichi Inagaki,Tatsuya Suzuki 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper proposes a new control scheme of decentralized multi-legged robot based on Follow-the-Contact-Point(FCP) gaitcontrol. In this control scheme, the first legs contact the points allocated on the terrain and the following legs touch the foot on the point which the fore leg is contacting. By creating adequate contacting points on the environ-ment, the robot can benavigated successfully. Since the position in for mation of the contacting points is relayed based on physical in for mation of the legs, each leg does not need the global position of the contacting point. As a result, the pro-posed control scheme realizes decentralized architecture. This paper in troduces the control law for the robot walking one venter rain. Finally, the result of physicals imulation of 20-legged robot shows the availability of the proposed method.
Ship-to-Ship Radiocommunication Trial by Using Wireless LAN
Yasuyuki NIWA,Hisaya MOTOGI,Chihiro NISHIZAKI,Misako URAKAMI,Takahiro SETA,Mitsuru KOBAYASHI,Makiko MINAMI 국제이네비해양경제학회 2015 International Journal of e-Navigation and Maritime Vol.3 No.1
Seamless transfer of electronic information/data between ship-to-shore and vice versa and between ship-to-ship and shore-to-shore is being developed in the IMO e-Navigation strategy implementation plan (SIP). We have been focused on wireless LAN for ship-to-ship radiocommunication. In a former field radiocommunication trial, omni-directional antennas were used and a few hundred kbps throughput between two ships was measured, which was not enough for our research target (over 1Mbps). In order to get faster throughput, a field radiocommunication trial was carried out again with a few types of directional antennas and RSSI (Received Signal Strength Indication) and the throughput between two ships was measured simultaneously. As a result, multi-path (2-path) model affected by the reflection of the sea surface was confirmed and also the characteristics of the directional antennas such as half-power angle were confirmed, but the measured throughput was fast enough to meet our expectation.