South Korea and Canada Entering the 21st Century: US Hegemonic Revival and the End of National Economic Sovereignty

Satoshi Ikeda(Satoshi Ikeda ),Jinhwan Kim(Jinhwan Kim) 한국캐나다학회 2000 Asia-Pacific Journal of Canadian Studies (APJCS) Vol.6 No.-

Evaluation of the Involvement of Coiled-coil α-helical Rod Protein 1 (CCHCR1) in Imiquimod-induced Psoriasis Models

Ikeda Yuri,Tsutihashi Hitoshi,Wada Akino,Koyama Satoshi,Yoshihara Nagisa,Ikeda Shigaku 대한피부과학회 2023 Annals of Dermatology Vol.35 No.4

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Deoxycytidine kinase and deoxyguanosine kinase of Lactobacillus acidophillus R-26 are colinear products of a single gene

IKEDA, TAKEHISA,GRIMME, STEPHEN,Ma, NING,IKEDA, SEACHIRO,FIENO, ANGELA,IVES, DAVID H,GUO, SHENYUAN,PARK, INSHIK 東亞大學校附設遺傳工學硏究所 1997 遺傳工學硏究 Vol.- No.4

Three of the four deoxynucleoside kinases required for growth of Lactobacillus acidophilus R-26 exist as heterodimeric pairs specific for deoxyadenosine(dAK) and deoxycytidine (dCK) or dAK and deoxyguanosine (dGK). However, only two tandem genes, dak/dgk, are found, and are expressed only as dAK/dGK in transformed Escherichia coli. Sequencing peptides spanning 63% of the native dCK subunit revealed a sequence identical to that deduced from dgk(beginning MTVIVL…), except that dCK lacks residues 2 and 3 (dCK is M-IVL;dGK is ·TVIVL). Also, mass spectrometry indicates that native dCK and dGK subunits are identical in mass adjusted for the first three residues. Furtheromore, the native enzymes have identical isoelectric pH values, indicating an equal number of charged residues. To enable E. coli to express peptide having the native dCK sequence, codons 2 and 3 were deleted from the dgk portion of the tandem genes, resulting in expression of protein having the specificities and regulatory properties of dAK/dCK, including heterotropic stimulation of dAK activity by deoxycytidine or dCTP (not deoxyguanosine or dGTP) and end-product inhibition of the respective activities by dATP and dCTP. Subcloning normal and mutant dgk yielded homodimeric dGK and dCK, respectively. The dCK homodimer strongly resembles human dCK with a low ?? for deoxycytidine, the ability to phosphorylate deoxyadenosine and deoxyguanosine at much higher ?? values, and end-product inhibition by dCTP. Thus two distinct and specific enzymes evidently are derived from a single Lactobacillus gene. The mechanism by which this occurs in vivo has yet to be elucidated.

Comparison of the implementation status of weight control and physical activities between South Korean and Japanese university students

( Tomoko Ikeda ),( Takahiro Ikeda ),( Osamu Aoyagi ),( Tae Hee Choi ),( Nam Ik Han ),( Ye Ju Hong ),( Kwang Soo Koo ),( Youn Shin Nam ) 한국체육학회 2016 국제스포츠과학 학술대회 Vol.2016 No.1

Purpose: Adolescent Japanese girls have a strong desire to be thin and, therefore, engage in many unhealthy weight-control behaviors such as dieting. In recent years, this drive for thinness has spread to include boys as well as girls. Meanwhile, the desire to be thin is also increasing among adolescents in South Korea. The present study aimed to investigate the correlation between weight-control (WC) behaviors and physical activity (PA) among university students in Japan and South Korea. Method: The subjects comprised 1,833 university students in Japan (male, 454; female, 456) and South Korea (male, 449; female, 474). All subjects were asked whether they engaged in WC behaviors and were queried about the intensity (mild, moderate, and vigorous), number of days per week, and duration of PA. The correlations between sex, WC behaviors, and PA were investigated by country using a chi-square test. Multiple correspondence analysis (MCA) was then applied to investigate overall correlations. Result: The rates of WC behaviors were higher among female students than male students in both countries (58.7% vs. 18.4% in Japan [χ2=151.9***] and 61.1% vs. 42.3% in South Korea [χ2=32.6***]). Regarding PA, male students tended to exercise more days per week than female students in South Korea for all PA intensities. The same tendency was observed in Japan in relation to moderate and vigorous PA, but not for mild PA which was the same for males and females. Two-dimensional (2D) plots based on the results of MCA showed a correlation between not engaging in WC behaviors and performing PA among male students and between engaging in WC behaviors and not performing PA among female students in both Japan and South Korea for mild PA (1D: α=.455, eigenvalue=1.519; 2D: α=.336, eigenvalue=1.337). This tendency became increasingly marked for moderate (1D: α=583, eigenvalue=1.776, 2D: α=.463, eigenvalue=1.531) and vigorous (1D: α=.656, eigenvalue=1.970, 2D: α=.470, eigenvalue=1.544) PA. Conclusion: Female university students in Japan characteristically engaged in WC behaviors without PA, and this tendency became more marked as exercise intensity increased. Female university students in South Korea also engaged in WC behaviors, but they also performed moderate PA; and WC behaviors were associated with PA. Male university students in South Korea engaged in WC behaviors, but these were associated with PA and the number of days per week; and durations of PA were greater than those of female university students in South Korea at all PA intensities. The rates of WC behaviors were low among male university students in Japan; however, the number of days per week and duration of PA were greater than those of male university students in South Korea at all PA intensities. The present findings show that the correlations between WC behaviors and PA observed among university students in South Korea are stronger in Japan.

Analysis of step climbing and descending by tandem wheelchairs connected by passive link Hidetoshi IKEDA, Zhi-Dong WANG, Takayuki TAKAHASHI

Hidetoshi IKEDA,Zhi-Dong WANG,Takayuki TAKAHASHI,Eiji NAKANO 제어로봇시스템학회 2001 제어로봇시스템학회 국제학술대회 논문집 Vol.2001 No.10

ON A GROUP CLOSELY RELATED WITH THE AUTOMORPHIC LANGLANDS GROUP

Ikeda, Kazim Ilhan Korean Mathematical Society 2020 대한수학회지 Vol.57 No.1

Let L_K denote the hypothetical automorphic Langlands group of a number field K. In our recent study, we briefly introduced a certain unconditional non-commutative topological group ${\mathfrak{W}}{\mathfrak{A}}{\frac{\varphi}{K}}$, called the Weil-Arthur idèle group of K, which, assuming the existence of L_K, comes equipped with a natural topological group homomorphism $NR{\frac{\varphi}{K}^{Langlands}}$ : ${\mathfrak{W}}{\mathfrak{A}}{\frac{\varphi}{K}}$ → L_K that we called the "Langlands form" of the global nonabelian norm-residue symbol of K. In this work, we present a detailed construction of ${\mathfrak{W}}{\mathfrak{A}}{\frac{\varphi}{K}}$ and $NR{\frac{\varphi}{K}^{Langlands}}$ : ${\mathfrak{W}}{\mathfrak{A}}{\frac{\varphi}{K}}$ → L_K, and discuss their basic properties.

杏雨書屋所藏敦煌文獻『義記』(羽271)の基礎的硏究

( Ikeda Masanori ) 동아시아불교문화학회 2013 동아시아불교문화 Vol.0 No.16

중국 남북조 시대의 남조 불교 융성은 양 무제(梁武帝, 재위 502-549) 시대에 전성기를 이루었는데, 그 전단계로서 주목되는 것이 남제 무제 (南齊武帝, 재위 482-493)의 장자인 문혜태자(文惠太子, 458-492)와 제2자인 경릉문선왕 소자양(竟陵文宣王 蕭子良, 460-494)을 중심으로 하는 남제 영명(永明) 년간(483-494)의 불교 진흥이다. 본고에서 고찰 대상으로 삼는 『의기(義記)』(羽271)는 바로 이 남제 전반기에 있어서의 남조 불교 교리학의 실록 자료로 생각되는 문헌이며, 소자양의 장서 목록등에 기재된 『잡의기(雜義記)』(또는 『의기(義記)』)20권의 잔권(殘卷)일가능성도 있는 지극히 귀중한 신출 자료이다. 본고는 이 『의기』의 기본 성격을 밝히기 위해 기고한 기초연구이며, I. 본문헌에 관한 기본 정보를 정리하며, II. 현존 『의기』에 등장하는 사명(寺名)·승명(僧名)에 입각하여 본 문헌의 성립지·성립연대를 추정하며, III. 또한 현존『의기』의 모두(冒頭) 3장의 후 2자인 1.2 천안 승종법사 해 법신의(天安僧鍾法師解法身義) 와 1.3 상정림 승유법사 해법신의(上定林僧柔法師解法身義) 라는 두 가지 법신의(法身義)를 중심으로 본 문헌의 성립 배경을 살펴 보는 것을 목적으로 한다. 본고의 고찰에서 얻어진 결과는 다음과 같다. 1. 현존 『의기』에 보이는 19개의 사명 거의 모두와 31명 승명의 절반은 『고승전(高僧傳)』및 『명승전(名僧傳)』·『속고승전(續高僧傳)』에서 확실하게 찾아볼 수 있다. 2. 본 문헌의 성립지는 건강(建康) 혹은 그 주변이며, 성립연대의 상한·하한은 각각 483년·489년으로 추정할 수 있다. 3. 본 문헌은 남제의 경릉문선왕 소자양의 장서 목록 등에 기재된 『잡의기』(또는 『의기』)20권의 잔권(殘卷)일 가능성이 있다. 4. 본 문헌은 저명한 승려들이 한 곳에 모여 행한 논의의 기록이라고 생각된다. Prosperity of Buddhism in southern area of China during the Southern and Northern Dynasties reached its golden age under the reign of Liang Wudi 梁武帝 (r. 502-549). For the previous stage of this flourishing, it has been noted by scholars that Buddhism was encouraged in the Yongming 永明 era (483-494) of the Southern Qi 齊 dynasty. During this time, the oldest son of Qi Wudi 齊武帝 (r. 482-493), Wenhui taizi 文惠太子 (458-492), and the second son, Jingling wenxuanwang Xiao Ziliang 竟陵文宣王 蕭子良 (460-494) played central roles. The Dunhuang manuscript Yiji 義記 (hane 羽 271) is a text considered to be a veritable record of the state of Buddhist doctrinal studies of the Southern Dynasties during the first half of the Southern Qi dynasty. This text was recently published, and is extremely valuable to scholars, as it possibly constitutes a surviving orphaned fascicle from the Za yiji 雜義記 (or the Yiji 義記) 20 juan 卷, which was included in Xiao Ziliang`s library list. This article is intended to clarify the basic nature of the Yiji. I focus on the following three goals: (I) to arrange basic information about the text; (II) to estimate the place where the text was composed, and the date of its completion, based on the names of temples and monks appearing in extant part of the Yiji; (III) to investigate the background of the composition of the text, with reference to the two "Fashen yi 法身義," namely "1.2 Tianan Sengzhong fashi Jie fashen yi 天安僧鍾法師解法身義" and "1.3 Shang dinglin Sengrou fashi Jie fashen yi 上定林僧柔法師解法身義," which constitute the latter two of the three chapters that form the beginning of the extant part of Yiji. The findings of the survey of this article are as follows: 1. We can identify almost all of the 19 names of temples and nearly half of the 31 names of monks that appear in the extant part of Yiji, as these temples and monks also appeared in the Gaoseng zhuan 高僧傳, the Mingseng zhuan 名僧傳, and the Xu gaoseng zhuan 續高僧傳. 2. We can estimate that the text was composed in Jiankang 建康, or its outskirts. We can also estimate that the date of its completion was between 483 and 489. 3. The text possibly constitutes a surviving orphaned fascicle from the Za yiji (or the Yiji) 20 juan, which were included in the library list of Jingling wenxuanwang Xiao Ziliang, of the Southern Qi dynasty. 4. The text is considered to be the record of debates held by famous monks, who met together in an assembly.

Characteristics of Cow's Voices in Time and Frequency Domains for Recognition

Ikeda, Yoshio,Ishii, Y. 한국농업기계학회 2001 Agricultural and Biosystems Engineering Vol.2 No.1

On the assumption that the voices of the cows are produced by the linear prediction filter, we characterized the cows' voices. The order of this filter was determined by examining the voice characteristics both in time and frequency domains. The proposed order of the linear prediction filter is 15 for modeling voice production of the cow. The characteristics of the amplitude envelope of the voice signal was investigated by analyzing the sequence of the short time variance both in time and frequency domains, and the new parameters were defined. One of the coefficients of the linear prediction filter generating the voice signal, the fundamental frequency, the slope of the straight line regressed from the log-log spectra of the short time variance and the coefficients of the linear prediction filter generating the sequence of the short time variance of the voice signal can differentiate the two cows.

Evaluation of novel sulfonylurea derivatives with a fused heterocyclic moiety as paddy herbicides that control sulfonylurea-resistant weeds

Ikeda, Hajime,Yamato, Seiji,Kajiwara, Yukari,Nishiyama, Takayuki,Tabuchi, Takanori,Tanaka, Yasushi The Korean Society of Weed Science and The Turfgra 2011 Weed Biology and Management Vol.11 No.3

Herbicidal activity and acetolactate synthase (ALS) inhibition of sulfonylurea derivatives with a fused heterocyclic moiety bonded to a sulfonyl group were investigated. Some compounds that had an imidazo[1,2-b]pyridazine moiety substituted at the 2-position by chlorine or methyl controlled sulfonylurea-resistant (SU-R) weeds and showed inhibitory activity to ALS prepared from SU-R Schoenoplectus juncoides shoot. There was a correlation between in vitro and whole-plant herbicidal activity of the compounds mentioned above against SU-R Schoenoplectus juncoides. Among them 1-(2-chloro-6-propylimidazo[1,2-b]pyridazin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl)urea, propyrisulfuron, was selected for further evaluation. Propyrisulfuron effectively controlled paddy weeds at doses of 70 and 140 g a.i. $ha^{-1}$ with good rice selectivity in a field trial.

Verification and Mitigation of Seismic Failure in Concrete Piers under Near-field Earthquakes

Ikeda, Shoji,Hayashi, Kazuhiko,Naganuma, Toshihiko Earthquake Engineering Society of Korea 2007 한국지진공학회논문집 Vol.11 No.4

This paper verifies the difference of the seismic behavior and seismic damage of the neighboring two reinforced concrete piers damaged by the 1995 Hyogoken Nanbu earthquake. The two piers were almost the same size, carrying slightly different dead load, and were provided with the same reinforcement arrangement except the amount of longitudinal reinforcement at the bottom portion of the piers. The pier with more reinforcement was completely collapsed due to this near field earthquake by shear failure at the longitudinal reinforcement cut-off while the other was only damaged at the bottom by flexure even though the longitudinal reinforcement cut-off was also existed at the mid height of the pier. According to the results of the pseudo dynamic test, the seismic damage was recognized to be greatly dependent on the ground motion characteristics even though the employed ground motions had the same peak acceleration. The severe damage was observed when the test employed the seismic wave that had strong influence to the longer period range compared to the initial natural period of the pier. On the other hand, based on the similar model experiment, the defect of gas-pressure welded splice of longitudinal reinforcement was revealed to save the piers against collapse due to the so-called fail-safe mechanism contrary to the intuitive opinion of some researchers. It was concluded that the primary cause of the collapse of the pier was the extremely strong intensity and peculiar characteristics of the earthquake motion according to both the site-specific and the structure-specific effects.