• Title/Summary/Keyword: Nz

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Hill Land Pasture Development (산지(山地)의 초지개발)

  • Davis, G.H.
    • Korean Journal of Soil Science and Fertilizer
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    • v.11 no.4
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    • pp.263-269
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    • 1979
  • Pasture establishment techniques successfully employed in the alpine region of Korea are outlined. The subsequent management of the mixed grass/legume pasture to maintain a high producing sward is also described. Relevant overseas literature has been reviewed and related to the methods in use at the ROK/NZ Beef Farming Research and Demonstration Project in the alpine region of Kangweon-do.

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CERTAIN CLASS OF FRACTIONAL CALCULUS OPERATOR WITH TWO FIXED POINTS

  • Kwon, Oh-Sang
    • East Asian mathematical journal
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    • v.14 no.1
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    • pp.107-116
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    • 1998
  • This paper deals with functions of the form $f(z)=a_1z-{\sum}{\limits}_{n=2}^{\infty}a_nz^n(a_1>0,\;a_n{\geqslant}0)$ with $(1-{\mu})f(z_0)/z_0+{\mu}f'(z_0)=1(-1. We introduce the class $\varphi({\mu},{\eta},{\gamma},{\delta},A,B;\;z_0)$ with generalized fractional derivatives. Also we have obtained coefficient inequalities, distortion theorem and radious problem of functions belonging to the calss $\varphi({\mu},{\eta},{\gamma},{\delta},A,B;\;z_0)$.

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THE ROENTGENOCEPHALOMETRIC STANDRDS OF THE KOREANS ACCORDING TO THE HIGLEY'S ANALYSIS (Higley씨 분석법에 의한 한국인 Roentgenographic Cephalometry의 기준치에 관하여)

  • Yu, Yeong-Se
    • The Journal of the Korean dental association
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    • v.8 no.11
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    • pp.629-644
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    • 1970
  • Higley씨 법에 의한 한국인의 Roentgenographic Cephalometry의 기준치를 조사하기 위하여 남자 150명,여자140명 합계 290명을 대상으로 하여 이를 분석계측하였다. 대상자의 대부분은 정상적인 교합자중에서 선택되었으며 악골과 안면이 잘 조화되고 있었다. 연구성적은 표의 형식으로 요약되었고 5,7,10,15,20,23세등의 연령군에 대하여 17항목의 선상계측과 20항목의 각도계측을 시행하였으며 당 계측치의 Mean, Standard deviation,Minimum,Maximum등을 산출하였다. 본 연구를 통하여 Cranial depth는 배인이 한국인에 비하여 큰 차이를 보이며(Line-NZ,FT)원부에 있어서는 한국인이 백인에 비하여 후퇴되었음을 알았다.(Angle-MNS),이것이 한국인과 백인의 안모의 판이점이라고 사료된다.

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Evaluation of the Criteria for the Control of Arousal Level and Effect of Warning Signal (각성도 제어를 위한 평가기준의 설정 및 경고음의 효과분석)

  • 김연호
    • Journal of Biomedical Engineering Research
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    • v.18 no.1
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    • pp.79-86
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    • 1997
  • This paper describes the development of portable arousal measurement and analysis system. Skin impedance change which responds to the change of arousal level was detected by the three elctrode constant current method and separated into two components(SIR, SIL). Relationship between Nz, IRI and arousal level was studied and criteria of arousal level control was decided by the sleep study. Measured data with and without warning signal were compared and analyzed.

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Comparison and The Evaluation of Criteria for Arousal Level Control (SIC에 의한 각성도 제어를 위한 평가기준의 설정 및 비교)

  • Ko, H.W.;Kim, Y.H.
    • Proceedings of the KOSOMBE Conference
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    • v.1996 no.11
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    • pp.372-376
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    • 1996
  • This paper describes the criterias to evaluate arousal states of subject and these are applied to contort arousal level. Correction factor was introdued to compensate under or over evaluated Nz due to the different initial basal skin impedance. These criteria and correction factor were worked well to increase the arousal level.

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Portable arousal measurement and analysis system (휴대형 각성도 측정 및 분석 시스템)

  • Ko, H.W.;Kim, Y.H.;Kim, C.J.;Lee, G.K.
    • Proceedings of the KOSOMBE Conference
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    • v.1996 no.05
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    • pp.60-64
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    • 1996
  • This paper describes the development of portable arousal measurement and analysis system. Skin impedance change which responds the change of arousal level was detected by the three electrode constant current method and separated into two components (SIR, SIL). Relationship between Nz, IRI and arousal level was studied and Criteria of arousal level control was decided by the sleep study.

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HANKEL DETERMINANTS FOR STARLIKE FUNCTIONS WITH RESPECT TO SYMMETRICAL POINTS

  • Nak Eun Cho;Young Jae Sim;Derek K. Thomas
    • Bulletin of the Korean Mathematical Society
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    • v.60 no.2
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    • pp.389-404
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    • 2023
  • We prove sharp bounds for Hankel determinants for starlike functions f with respect to symmetrical points, i.e., f given by $f(z)=z+{\sum{_{n=2}^{\infty}}}\,{\alpha}_nz^n$ for z ∈ 𝔻 satisfying $$Re{\frac{zf^{\prime}(z)}{f(z)-f(-z)}}>0,\;z{\in}{\mathbb{D}}$$. We also give sharp upper and lower bounds when the coefficients of f are real.

Improvement of Bit Error Rate through the Optimization of 320 Gbps WDM System with Non Zero-Dispersion Shifted Fiber (비영 분산 천이 광섬유를 갖는 320 Gbps WDM 시스템에서 최적화를 통한 비트 에러율 개선)

  • Lee, Seong-Real;Yim, Hwang-Bin
    • Journal of Advanced Navigation Technology
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    • v.10 no.2
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    • pp.103-113
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    • 2006
  • The numerical methods of finding the optimal position of optical phase conjugator (OPC) and the optimal fiber dispersions are proposed, which are able to effectively compensate overall channels in $8{\times}40$ Gbps WDM system with non zero-dispersion shifted fiber (NZ-DSF) as an optical fiber. And BER characteristics in the system with two induced optimal parameters are compared with those in the system with the currently used mid-span spectral inversion (MSSI) in order to confirm the availability of the proposed methods. It is confirmed that two optimal parameters depend on each other, but less related with the searching procedure. The methods proposed in this research will be expected to alternate with the method of making a symmetrical distribution of power and local dispersion in real optical link which is a serious problem but the condition in the case of applying the OPC into multi-channels WDM system.

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Association of infant feeding practices in the general population with infant growth and stool characteristics

  • Han, Young-Shin;Chang, Eun-Young;Kim, Ji-Hyun;Ahn, Kang-Mo;Kim, Hye-Young;Hwang, Eun-Mi;Lowry, Dianne;Prosser, Colin;Lee, Sang-Il
    • Nutrition Research and Practice
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    • v.5 no.4
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    • pp.308-312
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    • 2011
  • This was a prospective cohort study of 976 infants from birth to 12 months of age. Infants were fed breast milk, goat infant formula, cow infant formula, or a combination of formula and breast milk during the first 4 months of age. Data on type of milk feeding and infant growth (weight and height) were collected at birth and at 4, 8, and 12 months during routine clinical assessment. The number and consistency of bowel motions per day were recorded based on observational data supplied by the mothers. Infants fed breast milk or goat or cow infant formula during the first 4 months displayed similar growth outcomes. More of the infants fed cow infant formula had fewer and more well-formed bowel motions compared with breast-fed infants. The stool characteristics of infants fed goat formula resembled those of infants fed breast milk.

Optimization of Culture Conditions for the Production of Diphtheria Toxin (디프테리아 toxin 생산을 위한 발효조건 최적화)

  • Cho, Min;Ryu, Yeon-Woo
    • KSBB Journal
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    • v.14 no.2
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    • pp.241-247
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    • 1999
  • Experimental studies were carried out to optimize the culture conditions of Corynebacterium diphtheriae for the production of diphtheria toxin. A new media which does not contain any meat digest products was selected. The main ingredient of new medium was enzymatic digests of casein known as NZ-Case. In fermenter experiments, the toxin production was increased with the increase of cell growth. The optimum initial pH of media, air flow rate and agitation speed were 7.0, 0.22, vvm and 400 rpm, respectively. The contents of iron and calcium-phosphate precipitate were important for maximal cell growth and toxin production. The optimum concentration of iron was 0.3 mg/L and calcium-phosphate precipitate could serve in gradual supply of iron to maintain the optimal culture condition which is required for enhanced yield of toxin production. In potency test, the potency of toxoid from fermentor culture was higher than that from static culture. When diphtheria toxin is produced by fermentor culture, it is possible to produce higher levels of toxin and better toxoid quality in terms of safety, yield, productivity and immunity.

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