Safe Manual Control of Pendulums - A Human Adaptive Mechatronics Perspective

K,J,Astrom,M,Iwase,K,Furuta,J,Akesson 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2006 International Journal of Assistive Robotics and Me Vol.7 No.1

Human Adaptive Mechatronics is a research project at Tokyo Denki University sponsored by Ministry of Education, Sports, Culture, Science and Technology (MEXT). Human Adaptive Mechatronics consists of Human and Mechatronics, and aims to develop Mechatronic systems adapting and assisting human operations. This paper explores the interaction of manual and automatic control in a demanding task where the process is unstable and has actuator limitation. The problem is inspired by control of high performance aircrafts but which is similar to controlling the arm of a Furuta pendulum while maintaining the stability of the pendulum.

Construction of a System for the Strawberry Nursery Production towards Elimination of Latent Infection of Anthracnose Fungi by a Combination of PCR and Microtube Hybridization

Furuta, Kazuyoshi,Nagashima, Saki,Inukai, Tsuyoshi,Masuta, Chikara The Korean Society of Plant Pathology 2017 Plant Pathology Journal Vol.33 No.1

One of the major problems in strawberry production is difficulty in diagnosis of anthracnose caused by Colletotrichum acutatum or Glomerella cingulata in latent infection stage. We here developed a diagnostic tool for the latent infection consisting of initial culturing of fungi, DNA extraction, synthesis of PCR-amplified probes and microtube hybridization (MTH) using a macroarray. The initial culturing step is convenient to lure the fungi out of the plant tissues, and to extract PCR-inhibitor-free DNA directly from fungal hyphae. For specific detection of the fungi, PCR primers were designed to amplify the fungal MAT1-2 gene. The subsequent MTH step using the PCR products as probes can replace the laborious electrophoresis step providing us sequence information and high-throughput screening. Using this method, we have conducted a survey for a few thousands nursery plants every year for three consecutive years, and finally succeeded in eliminating latent infection in the third year of challenge.

Effect of Admix Ratio of Free-machining Agent 'KSX' that Contains Complex Calcium Oxide Powder on Machinability

Furuta Satoshi,Masuda Shinsuke 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1

Free-machining agent 'KSX' contains complex calcium oxide is developed. The effect of admix ratio of KSX on mechanical properties and machinability with two different cutting speeds is reported. KSX displays improved machinability without deterioration of mechanical properties up to 0.3mass% addition. It was observed that KSX is effective with a small addition of 0.1mass% at slower cutting speed, and increased of admix ratio is effective at faster cutting speed.

現代日本語可能表現「N(ガ)デキル」の意味用法

FURUTA RYOKO 한국일본언어문화학회 2015 일본언어문화 Vol.32 No.-

In this paper, the model of “possibility” is first established in pursuing the meaning and usage of the expression of possibility “N(ga)dekiru”, and the meanings of “possibility” into three types such as <potentiality>, <realization> and <intermediate type> are set, thinking that <potentiality> and <expression>, which are the grammatical meanings represented by “possibility”, are not different, but “possibility” is the concept that has both <potentiality> and <expression>. Next, it is investigated under which conditions the expression of possibility “N(ga)dekiru” can be represented by distinguishing three types from two viewpoints such as subject and possibility factors. The results are follows. First, it is confirmed that if the subject is “person”, and the subject of action can be specified, “ability possibility” that represents <potentiality>, “situation possibility” representing from <potentiality> to <expression> and “realization possibility” that represents <expression> can be thought according to the differences of possibility factors. Second, if the subject of action cannot be specified, “person” “object” and “incident” can be thought of as the subject, and they all are found to be “attribute possibility” that represents “potentiality”. In this regard, this paper has its significance in that it divided the meanings of “possibility” identified by the conventional dichotomy of <potentiality> or <expression> into three types in consideration of the relevance of <potentiality> and <expression> and confirmed that the meanings of “possibility” can be determined depending on the type of the subject and the factor of “possibility”. .

In Search of a New Theory of Value in Economics : A Key to the Construction of Ideal Society

Furuta, Takeshi 선문대학교 통일사상연구원 1997 통일사상 연구논총 Vol.2 No.-

It is necessary to design the anti-vibration system of precision machinery for a quality assurance. However, in general, the allowable vibration limit is not well known. In this paper, the vibration criteria for foundation of sensitive machinery is proposed and anti-vibration system is designed by using vibration measurement results of foundation. Also, the finite element analysis is performed to verify the effectiveness of the designed anti-vibration system and to determine the allowable dynamic loads of precision measuring system. The results of this study will be helpful for the future design of anti-vibration structures with nano scale measuring system.

Development of the Gonads Derived from Hetero-Sexually Transferred Primordial Germ Cells (PGCs) between Embryos in the Chicken

Furuta, H.,Yamaguchi, H.,Fujihara, N. Asian Australasian Association of Animal Productio 1999 Animal Bioscience Vol.12 No.8

Primordial germ cells (PGCs) of White Leghorn chicken embryos as a donor were transferred to Rhode Island Red chicken embryos as a recipient. At 48-50 h (stage 13-15) of incubation of fertilized eggs, donor PGCs, which were taken out from blood vessels of donor embryos, were injected into blood vessels of recipient embryos. Sex of the treated embryos was determined after the transfer of PGCs using remaining blood samples. In the present experiments, survival rate of the treated embryos was 33.3% for homo-sexual and 35.4% for hetero-sexual transfers of PGCs, respectively, when determined at 17 days of incubation. In this study, most of the treated embryos could not survive more than 18 days of incubation, though the reason for that was not clarified in the present work. The gonalds removed from embryos that died after 18 days of incubation and the organs from newly hatched chicks were examined for morphological and histological features. The gonads removed from the embryos with homo-sexual transfer of PGCs showed normal development in appearance. On the contrary, some (35.3%) of the embryos with hetero-sexual transfer of PGCs possessed abnormal gonads similar to ovotestis by histological observation. In cases where the gonads developed to be normal organs (64.7%) the sex of embryos was the same as recipient ones. The present results suggest that hetero-sexual transfer of the PGCs may bring about the possibility of development of the embryos bearing sexually different gametes, spermatogonia or oogonia.

現代日本語の可能表現「N(ガ)デキル」と「eル・ラレル」の比較考察 - 意味的分布の比較を中心に -

FURUTA RYOKO 한국일본어학회 2016 日本語學硏究 Vol.0 No.49

In this study, according to the level of subjectivity, the ‘possibility’ was divided into attribute possibility, able possibility, situational possibility and will possibility, and the distribution aspects on the four possible types of the representatives of possibility, ‘N(ga)dekiru’ and ‘eru・rareru’ were analyzed. As a result, it was verified that there was a significant difference between the two types of ‘N(ga)dekiru’ and ‘eru・rareru’. Moreover, as a result of the comparative consideration on the differences of the two forms through the analysis result, the matters stated below were clarified. 1)In contrast to the point by Okuda(1986) on ‘eru・rareru’ sentences are limited with people as the subject’, regarding that objects and incidents have the attribute possibility to be shown on the location as the subject, ‘eru・rareru’ sentences have high ratio of people being the subject, but it was verified that objects and incidents are also shown as the subject. 2)As for the situational possibility, there was a tendency of examples focused in the indeterminate form of ‘eru・rareru’. This is considered to be due to the effect of the Rareru sentence forming process. 3)For the will possibility, having high rate of ‘N(ga)dekiru’ is considered to be due to having the function of being easily linked to the case of requiring will on the ‘N(ga)dekiru’ itself. In conclusion, ‘eru・rareru’ is affected by the original meaning of natural occurrence in the Rareru sentence, and thus when strong will is required, it is not frequently shown. And the weak point of ‘eru・rareru’ can be supplemented by ‘N(ga)dekiru’ having the function of 〈+will〉. 본 연구에서는 주체성의 정도에 따라 가능을 속성가능, 능력가능, 상황가능, 의지가능의 4가지 타이프로 나누어, 가능의 대표형식인「N(ガ)デキル」와「eル・ラレル」에 있어 그 분포양상을 분석했다. 그 결과 두 형식 사이에는 의미있는 차이가 있음을 확인하였다. 더욱이 분석결과로부터 두 형식의 차이를 세밀히 비교한 결과, 다음과 같은 사실을 명확히 하였다. 1)오쿠다(1986)의‘ 「eル・ラレル」문은 ヒト주어에 한정되어 있다’ 는 지적에 대해, モノ・コト가 주어 위치에 나타나는 속성가능에 있어, 「eル・ラレル」는 ヒト가 주어가 되는 경우가 많다고는 하지만, モノ・コト주어도 나타나는 것을 확인할 수 있었다. 2)상황가능에서 「eル・ラレル」는 부정형에 용례가 집중되는 경향을 보였다. 이는 ラレル문 형성 과정에서 영향을 받았다고 생각할 수 있다. 3)의지가능에서 「N(ガ)デキル」의 정도가 높은 것은, 「N(ガ)デキル」자체에 의지성이 요구되는 경우와 연결되기 쉬운 기능이 있기 때문이라고 생각할 수 있다. 결론으로서 「eル・ラレル」는 ラレル문의 자연발생이라는 원래 의미의 영향에서 강한 의지성이 요구되는 경우에는 나타나기 어렵고,「eル・ラレル」가 다루기 어려운 부분을 「N(ガ)デキル」가 〈+의지성〉기능을 가짐으로써 보완하고 있다고 볼 수 있다.

뉴럴네트워크와 구조공학에의 응용

Furuta, Hitoshi 한국전산구조공학회 1996 전산구조공학 Vol.9 No.3

본문에서는 우선 뉴럴네트워크의 기본원리와 그 특징에 대해서 논하고, 다음으로 몇 개의 적용 예를 소개하며, 구조공학분야에 있어서의 유용성에 대하여 기술한다.

Effects of different heating conditions on protein composition in each muscle type of yellowtail (Seriola quinqueradiata)

Furuta Ayumi,Hamakawa Yumi,Ishibashi Chinami,Mabuchi Ryota,Tanimoto Shota 한국수산과학회 2022 Fisheries and Aquatic Sciences Vol.25 No.1

To clarify the factors influencing the physical properties of fish after heat treatments, we investigated changes in the properties of proteins in the dorsal ordinary and dark muscle of yellowtail (Seriola quinqueradiata) heated under different conditions commonly used for the purposes of food hygiene. High-temperature/short-time heating (85℃ for 90 s and 75℃ for 60 s) affected the protein solubility more than low-temperature/long-time heating (63℃ for 30 min). Sodium dodecyl sulphate-polyacrylamide gel electrophoresis and differential scanning calorimetry showed that low-temperature/long-time heating reduced the degree of actin denaturation in fish compared with that by other heating conditions. In addition, collagen solubility was enhanced with low-temperature/long-time heating. Therefore, these results suggest that differences in the degree of actin and collagen denaturation are responsible for the enhanced meat tenderness and diminished meat shrinkage, resulting from low-temperature/ long-time heating.

In Search of a New Theory of Value in Economics : A Key to the Construction of Ideal Society

Furuta, Takeshi 선문대학교 통일사상연구원 1997 통일사상 연구논총 Vol.3 No.-

The ideal society envisaged by Karl Marx was a classless society of affluence and freedom. However, the reality of socialism was, in all aspects, quite the opposite. The socialist societies established by Marxists fell into dictatorships where the people were ruled by violence and where the economy was enormously stagnated.