Cryopreservation of Mature Seeds of Various Orchids by Vitrification

Tomonari Hirano,Masahiro Mii 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Feature extraction of EEG during motor imagery and cognition by using morphological MRA

Tomonari Yamaguchi,Mitsuhiko Fujio,Katsuhiro Inoue,Gert Pfurtscheller 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8

Electroencephalograph (EEG) recordings during right and left hand motor imagery can be used to move a cursor to a target on a computer screen. Such an EEG-based brain-computer interface (BCI) can provide a new communication channel to replace an impaired motor function. Recently, we have proposed the detection method of Error Potential in order to add the fail safe function to BCI system. In this paper, feature extraction method based on morphological multi-resolution analysis is introduced to extract features concerned with motor imagery and cognition simultaneously from EEG signals. Morphological filter is composed of nonlinear operation between signal and structural function. We propose some design methods of structural function that decide the filter characteristic of morphology. These algorithms are compared to DWT from the view point of filter characteristics. Consequently, effectiveness of our method is confirmed.

Experimental study on wind-based vehicle speedometer applying the whistle principle

Tomonari Kaneko,Tomoyuki Ohkubo,Yousuke Kurihara,Kazuyuki Kobayashi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8

It is important to consider the effect of wind when driving a vehicle at high speeds since the rate of fuel consumption may change according to wind direction in relation to vehicle driving direction. In order to minimize fuel consumption when driving at high speeds, it is necessary to control the relative vehicle speed against the wind. This paper proposes a new type of speedometer that is based on wind speed instead of conventional ground speed. For the detection of wind speed, we focus on the whistle principle where the frequency of the whistle sound is proportional to the airflow rate. To measure the wind speed as airflow rate, we developed a special whistle suitable for a wind-based vehicle speedometer by using CAD software for three-dimensional modeling. Characteristics of the developed wind-based vehicle speedometer were tested in both indoor experiments and actual-vehicle outdoor experiments. The validity of the proposed method was confirmed by the experiments.

SOCIO-ECONOMIC AND BIOLOGICAL FACTORS OF FAMILIES FROM POLAND. JAPAN, SOUTH KOREA, AND BULGARIA

TOMONARI,KYUTOKU,LIOCHEVA,VLAIKA,TSUSHIMA,SEIZO,CHUNG,SO YOUNG,WOLANSKI,NAPOLEON,JANUSZKO,LEONARD 忠南大學校體育科學硏究所 1988 體育科學硏究誌 Vol.6 No.1

The purpose of this study is to present relations between socioeconomic and biological features of families in various urban and rural population of different sites, representing different socio-economic systems and even different anthropological types. The subjects for the study are 14 different populations from poland, Japan, South Korea, and Bulgaria. We used correlation matrix for the analysis to examine interrelations between education or income and body height, or education and income and other vaiables. We also applied factorial analysis to obtain uncorrelated family factors. We investigated only four principal components in every population to facilitate comparisons between various populations. The populations examined are characterized by the following extreme magnitudes of properties of families : in South Korea, a small number of family members are gainfully employed, and there is a large number of family members per person employed : in Japan, the level of education of the population is high, the apartments have many rooms, the density of occupancy is low, the people are short: in Bulgaria, the people are tall, the differentiation of incomes is small: in Poland : the level of education of the population is high, the families are small, the density of occupancy of apartments in low, the people are tall. Approximately 70% of common Variances are due to family features in population. Awareness and genetic factors of spouses are linked with income and employment.

Cryopreservation and low-temperature storage of seeds of Phaius tankervilleae

Tomonari Hirano,Toshinari Godo,Kazumitsu Miyoshi,Keiko Ishikawa,Masaya Ishikawa,Masahiro Mii 한국식물생명공학회 2009 Plant biotechnology reports Vol.3 No.1

In this study we established reliable methods for conservation of seeds of Phaius tankervilleae as an orchid genetic resource. The seeds, which were dehydrated to 5% water content and preserved at 4C, showed no decrease in viability and germinability after three months. After storage for six months, however, the seeds showed a drastic decrease in germinability, even though survival rate was high. For long-term preservation of seeds of P. tankervilleae, cryopreservation is applied to the freshly harvested seeds. When the seeds were cryopreserved by the vitrification method for up to 12 months there was no apparent deterioration effect of storage time. These results indicate that cryopreservation by the vitrification method is useful for long-term conservation of P. tankervilleae seeds, which are difficult to preserve for more than three months under dry and low-temperature conditions. In this study we established reliable methods for conservation of seeds of Phaius tankervilleae as an orchid genetic resource. The seeds, which were dehydrated to 5% water content and preserved at 4C, showed no decrease in viability and germinability after three months. After storage for six months, however, the seeds showed a drastic decrease in germinability, even though survival rate was high. For long-term preservation of seeds of P. tankervilleae, cryopreservation is applied to the freshly harvested seeds. When the seeds were cryopreserved by the vitrification method for up to 12 months there was no apparent deterioration effect of storage time. These results indicate that cryopreservation by the vitrification method is useful for long-term conservation of P. tankervilleae seeds, which are difficult to preserve for more than three months under dry and low-temperature conditions.

"-(으)ㄹ 것이-"와 "-(으)ㄹ 터이-"에 대한 일고찰

다카치토모나리 ( Tomonari Takachi ) 서강대학교 언어정보연구소 2016 언어와 정보 사회 Vol.27 No.-

The purpose of this paper is to investigate the grammatical collocations ``-(u)l kesi-`` and ``-(u)l thei-`` in terms of modal meaning. Chapter 2 and 3 discuss the terminologies ``modality`` and ``degrees of modality``. Chapter 4 investigate the features of ``-(u)l kesi-`` and ``-(u)l thei-``. Both of them are polysemic grammatical collocations which mean epistemic and dynamic modal meanings. Considering ``-(u)l kesi-`` and ``-(u)l thei-`` in terms of syntactic and semantic views and adopting a prototype approach regarding their degrees of modality, we have come to a conclusion that they are not real-modal markers but pseudo-modal markers.

Generic model for the hyperkagome iridateNa4Ir3O8in the local-moment regime

Mizoguchi, Tomonari,Hwang, Kyusung,Lee, Eric Kin-Ho,Kim, Yong Baek American Physical Society 2016 Physical Review B Vol.94 No.6

<P>The hyperkagome iridate, Na4Ir3O8, has been regarded as a promising candidate material for a three-dimensional quantum spin liquid. Here the three-dimensional network of corner-sharing triangles forms the hyperkagome lattice of Ir4+ ions. Due to strong spin-orbit coupling, the local moments of Ir4+ ions are described by the pseudospin j(eff) = 1/2 Kramers doublet. The Heisenberg model on this lattice is highly frustrated, and quantum/classical versions have been studied in earlier literature. In this work, we derive a generic local-moment model beyond the Heisenberg limit for the hyperkagome iridate by considering multiorbital interactions for all the t(2g) orbitals and spin-orbit coupling. The lifting of massive classical degeneracy in the Heisenberg model by various spin-anisotropy terms is investigated at the classical level, and the resulting phase diagram is presented. We find that different anisotropy terms prefer distinct classes of magnetically ordered phases, often with various discrete degeneracy. The implications of our results for recent mu SR and NMR experiments on this material and possible quantum spin liquid phases are discussed.</P>

`관형사형 어미+성싶/듯싶/듯하-`의 기능 차이

다카치토모나리 ( Takachi Tomonari ) 서강대학교 언어정보연구소 2017 언어와 정보 사회 Vol.30 No.-

The purpose of this paper is to investigate functional differences of the grammatical collocations `adnominal ending+seong sip/dus sip/dus ha-`. The first, compared to the bound noun `seong`, the bound noun `dus` implicates not only positive dimension, but also negative dimension. Based on this difference, the grammatical collocations `adnominal ending+seong sip-` and `adnominal ending+dus sip-` can be distinguished on functional view point. Secondly, compared to `ha-`, `sip-` has more subjective feature and it represents speaker`s strong subjective attitude. From this view point, the grammatical collocations `adnominal ending+dus sip-` and `adnominal ending+dus ha-` are distinguished. In the last, we concluded that the form `adnominal ending+seong sip-` is differ from `adnominal ending+dus sip-/ha-` from the view point of `territory of information` and this kind of difference is a result from the functional difference between `seong` and `dus`.

‘-는 법이다’와 ‘-기 마련이다’의 양태 정도성

다카치 토모나리(Takachi Tomonari) 서울대학교 언어교육원 2018 語學硏究 Vol.54 No.1

The purpose of this paper is to investigate the grammatical collocations -nun pep-i-ta and -ki malyen-i-ta in terms of modal meaning. Chapter 2 considers the grammatical and lexical components of -nun pep-i-ta and -ki malyen-i-ta, and Chapter 3 investigates similarities and differences between the two collocations. Both phrases mean “universal truth” or “general facts in common.” However, in terms of co-occurrences with the grammatical forms -(e)ya ha-ta, -keyss-, and other forms that have epistemic modal meanings, -nun pep-i-ta and -ki malyen-i-ta take on a different color. These differences have been ascribed to the distinctiveness between the modal meanings of -nun and -ki. The form -nun is associated with a realis feature, whereas -ki expresses an irrealis one. In Chapter 4, we investigate degrees of modality for both -nun pep-i-ta and -ki malyen-i-ta. After considering -nun pep-i-ta and -ki malyen-i-ta in terms of semantics and syntax, and adopting a prototype approach regarding their degrees of modality, we have come to the conclusion that they express epistemic modal and usuality. However, they are not real-modals but pseudo-modals.

현대 한국어 관형절 어미 기능에 대한 시론

다카치 토모나리(Takachi, Tomonari) 한국언어학회 2008 언어 Vol.33 No.4