• Title/Summary/Keyword: Kim Chi-ha

Search Result 284, Processing Time 0.03 seconds

Effect of Amount of Nutrient Solution Supply on the Growth and Yield in Isolated Bed Culture of Eggplant (가지 격리상재배시 급액량이 생육 및 수량에 미치는 영향)

  • Kim, Ju;Jang, Ik;Choi, Dong-Chil;Jung, Jong-Sung;Kim, Chi-Sun;Choi, Jung-Sik;Choi, Young-Geun;Bae, Jong-Hyang
    • Proceedings of the Korean Society for Bio-Environment Control Conference
    • /
    • 2003.04a
    • /
    • pp.98-103
    • /
    • 2003
  • 우리나라의 가지 재배면적은 1970년 2,815ha이었던 것이 그 후 점차 줄어들어 2001년은 866ha가 재배되고 있고, 시설재배면적은 1970년 27ha로 전체면적의 1%도 채 안되는 매우 적은 면적이었으나 2001년에는 전체면적의 33%에 가까운 284ha가 재배되고 있다. 연간 총생산량으로 보면 1970년에 비하여 큰 차이가 없다. 이는 노지재배의 10a당 수량이 적을 때는 892kg 많을 때는 2,782kg 이나 시설재배의 10a당 수량은 1,617-4,294kg으로 노지재배에 비해 시설재배의 수량이 많기 때문이다(M.A.F. 2001). (중략)

  • PDF

Comparing Effects of Tai Chi Exercise, Tai Chi Self-help Program, and Self-help Management Program for Osteoarthritis Patients (골관절염 환자를 위한 타이치, 타이치-자조관리 및 자조관리과정의 효과 비교)

  • Cho, Kyung-Sook;Kang, Hyun-Sook;Kim, Jong-Im;Bak, Won-Sook;Song, Rha-Yun;Ahn, Yang-Heui;Lim, Nan-Young;Lee, In-Ok;Choi, Sun-Ha;Han, Sang-Sook
    • Journal of muscle and joint health
    • /
    • v.14 no.1
    • /
    • pp.77-84
    • /
    • 2007
  • Purpose: The purpose of the study was to compare the effects of Tai Chi exercise, Tai Chi self help program, and self help management program on arthritic pain, stiffness, fatigue and difficulties in performing daily activities in patients with osteoarthritis. Method: The pre-post experimental design was utilized with convenient sampling at Public Health Centers. Total of 38 subjects agreed to participate in the study with the inclusion criteria of being diagnosed as osteoarthritis and no previous regular exercise. The 12 subjects were assigned to Tai Chi exercise group, 13 subjects to Tai Chi exercise combined with self help management program, and the other 13 to self help management program. Tai Chi exercise group performed exercise twice a week for one hour per each session. Tai Chi self help management group came to the class twice a week, one hour for Tai Chi exercise, and another hour for self help management program. The third group came to the class once a week for one hour to participate self help management program. At the completion of 6 week programs, 10 subjects from Tai Chi exercise, 9 from Tai Chi self help, another 10 from self help management groups completed the post-test measures. The data were analyzed by SPSSWIN 11.0. The homogeneity tests for three experimental groups were conducted by $X^2-test$, Fisher's exact test, Kruskal-Wallis test. The final analysis of the post-test measures was conducted by ANCOVA with fatigue, pain, stiffness, and difficulties in daily activities of the pretest measures as covariates. Results: The results were as follows. There were no significant differences in fatigue, pain, and difficulties of daily activities among three groups for the pretest measures. The score of arthritic stiffness was significantly different among groups after controlled for covariates, but the post-hoc tests showed no group differences. Conclusion: The nursing interventions applied for osteoarthritis patients have been previously tested to show the cost effectiveness of symptoms management of this population.

  • PDF

Lp-boundedness (1 ≤ p ≤ ∞) for Bergman Projection on a Class of Convex Domains of Infinite Type in ℂ2

  • Ly Kim Ha
    • Kyungpook Mathematical Journal
    • /
    • v.63 no.3
    • /
    • pp.413-424
    • /
    • 2023
  • The main purpose of this paper is to show that over a large class of bounded domains Ω ⊂ ℂ2, for 1 < p < ∞, the Bergman projection 𝓟 is bounded from Lp(Ω, dV ) to the Bergman space Ap(Ω); from L(Ω) to the holomorphic Bloch space BlHol(Ω); and from L1(Ω, P(z, z)dV) to the holomorphic Besov space Besov(Ω), where P(ζ, z) is the Bergman kernel for Ω.

High Temperature Precipitation Behavior of High-Nitrogen Duplex Stainless Steel (고질소 2상 스테인리스강의 고온 석출거동)

  • Bae, Jong-In;Kim, Sung-Tae;Lee, Tae-Ho;Ha, Heon-Young;Kim, Sung-Joon;Park, Yong-Ho
    • Korean Journal of Metals and Materials
    • /
    • v.49 no.2
    • /
    • pp.93-103
    • /
    • 2011
  • Precipitation behavior of high-nitrogen duplex Fe-24Cr-7Mn-4Ni-4Mo-0.43N stainless steel aged at $850^{\circ}C$ was investigated using scanning transmission electron microscopy. Based on the analyses of selected area diffraction patterns, four kinds of precipitates (intermetallic sigma (${\sigma}$) and chi (${\chi}$), $Cr_2N$ and secondary austenite) were identified. At the ferrite/austenite phase boundary, the ${\sigma}$ phase and secondary austenite were formed via ${\alpha}{\rightarrow}{\gamma}+{\sigma}$ eutectoid reaction. The precipitation of $Cr_2N$ occurred at the austenite grain boundary as well as the interior of the ferrite. The intermetallic ${\chi}$ phase also formed within the ferrite and showed a cube-cube orientation relationship with the ferrite. Further aging produced a lamellar structure composed of $Cr_2N$ and austenite along the ferrite/austenite boundary and enhanced the precipitation of the ${\chi}$ phase. The crystallographic features of the precipitates were also examined in terms of the orientation relationship with the austenite or ferrite matrix.

Ljung-Box Test in Unit Root AR-ARCH Model

  • Kim, Eunhee;Ha, Jeongcheol;Jeon, Youngsook;Lee, Sangyeol
    • Communications for Statistical Applications and Methods
    • /
    • v.11 no.2
    • /
    • pp.323-327
    • /
    • 2004
  • In this paper, we investigate the limiting distribution of the Ljung-Box test statistic in the unit root AR models with ARCH errors. We show that the limiting distribution is approximately chi-square distribution with the degrees of freedom only depending on the number of autocorrelation lags appearing in the test. Some simulation results are provided for illustration.