• 지역사회간호학회지
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• 제7권1호
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• pp.18-28
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• 1996

This study was carried out to explore the direction of job involvement of public health nurses and explore the way for improving services of public health center in Korea. The subjects were consisted of 164 nurses who were working at public health centers in Chonbuk. The data were collected by self-reporting questionnaire from Jan. 15 to Jan. 27, 1996. The instrument used in this study was Likert-type scale which Job Involvement Scale developed by Kanungo. The questionnaires of organizational and job characteristic were made through reviewing literatures. The data were analyzed by frequency, percentage, t-test, one-way ANOVA, Scheffe test, and Pearson's correlation coefficient with SPSSPC+ program. Major findings were as follows : 1. Mean scores for job involvement were 3.0879 on a 5 point scale. 2. In the personal variables, professional experience(t=-2.18, p=.031), position(t=2.34, p=.021), and age(F=-1.94, p=.038) were statistically significant in job involvement. 3. The variables to job characteristic were statistically significant in job involvement: job challenge (r=.4785, p=.000), role ambiguity (r=-.3141, p=.000), task significance (r=.2714, p=.000), and role conflict(r=-.2166, p=.003). 4. The variables to organizational characteristic were statistically significant in job involvement : formalization(r=.3184, p=.000) and human centered organizational characteristic (r=.2450, p=.001).

• 대한수학회보
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• 제33권3호
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• pp.487-496
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• 1996

Let f(z) be an entire function. Then the order $\rho(f)$ of f is defined by $$ \rho(f) = \overline{lim}_r\to\infty \frac{log r}{log^+ T(r,f)} = \overline{lim}_r\to\infty \frac{log r}{log^+ log^+ M(r,f)}, $$ where T(r,f) is the Nevanlinna characteristic of f (see [4]), $M(r,f) = max_{$\mid$z$\mid$=r} $\mid$f(z)$\mid$$ and $log^+ t = max(log t, 0)$.

• 한국컴퓨터그래픽스학회논문지
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• 제7권3호
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• pp.1-7
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• 2001

본 논문에서는 canal 곡면의 투시 윤곽곡선 (perspective silhouette)에 대한 매개변수화 (parametrization) 방법과 윤곽곡선을 이루는 모든 연결된 구성요소 (connected component)를 발견하는 효율적이고 안정성 있는 알고리즘을 제시한다. Canal 곡면은 반경이 변화하면서 이동하는 구 (moving sphere)의 외곽곡면 (envelope surface)이며, 구의 중심점의 궤적을 나타내는 곡선 C(t)와 구의 반경 함수 r(t)에 의해 정의된다. 이동 구는 canal 곡면과 원에서 교차한다. Canal 곡면을 원의 집합으로 분할함으로써, 각각의 원 위에서 주어진 관측점에 대한 투시적 윤곽곡선을 구성하는 점을 계산하여 매개변수화하는 방법을 제시한다. 고정된 중심점 $C(t_*)$와 반경 $r(t_*)$를 갖는 이동 구는 canal 곡면과 하나의 원 $K(t_*)$에서 교차한다. 또한 이동 구를 관측점에서 볼 때의 윤곽곡선도 다른 하나의 원 $Q(t_*)$을 구성한다. 두 원 $K(t_*)$와 $Q(t_*)$가 한 점에서 접하게 되는 t의 값을 구함으로써 canal 곡면에 대한 윤곽곡선을 이루는 모든 연결된 구성요소를 발견하는 효율적인 방법을 제시한다.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2003년도 추계학술대회
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• pp.100-105
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• 2003

With the recent development of machining technology, high speed machining process is widely used for-the mold and difficult-to -cut-materials machining since it allows achieving high productivity and surface quality. However, during the high speed machining process, high cutting speed and feed rate can cause abrupt tool life decrease due to rapid rising of the cutting tool temperature. Such situation may cause increase of machining cost. Thus, in this study, developed optimization algorithm is applied to determine optimal machining variables for multiple high speed machining. The R-T characteristic curve for machining economics problems with a linear-lorarithmic tool life model is determined by applying sensitivity analysis. finally, a series of high speed machining experiments are performed to determine the desired optimal machining variables, and the results are analyzed.

• 한국정밀공학회지
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• 제14권7호
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• pp.99-107
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• 1997

An algorithm is developed to find optimal machining parameters for multiple machining environments. The cutting rate-tool life (R-T) characteristic curve presents the general loci of optima and is useful for the flexible machining operations planning. The R-T characteristic curve for the machining economics prob- lems with linear-logarithmic tool lofe model may be determined by applying sensitivity analysis to log-dual problems. Three cases of the change of machining environments are considered. An end milling example is constructed to illustrate the algorithm.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 전기.전자공학 학술대회 논문집(I)
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• pp.542-545
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• 1987

THE ELECTRICAL CHARACTERISTICS Of RAPID THERMAL OXIDES AND NITRIDED OXIDES HAVE BEEN INVESTIGATED. R.T.OXIDE FILMS HAVE BEEN PREPARED BY ONLY R.T. OXIDATION OR R.T.OXIDATION AND SUBSEQUENT R.T.ANNEAL. NITRIDED OXIDE FILMS HAVE BEEN PREPARED BY R.T.OXIDATION AND SUBSEQUENT R.T.NITRIDATION.AND CONVENTIONAL OXIDES ALSO HAVE BEEN PREPARED TO COMPARE WITH R.T.P OXIDES. R.T.ANNEALED OXIDES SHOW EXCELLENT BREAKDOWN FIELD. LEAKAGE CURRENT AND TDDB CHARACTERISTICS. ALSO, CAPACITANCE Of R.T NITRIDED OXIDES ARE SUPERIOR BY 10% TO CONVENTIONAL OXIDES, BUT TDDB CHARACTERISTIC ARE POORER THAN OXIDE FILMS.

• Journal of applied mathematics & informatics
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• 제40권3_4호
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• pp.507-513
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• 2022

In this paper, we investigate some results on complex delay-differential equations of the classical Malmquist theorem. A classic illustrations of their results states us that if a complex delay equation w(t + 1) + w(t - 1) = R(t, w) with R(t, w) rational in both arguments admits (concede) a transcendental meromorphic solution of finite order, then deg_wR(t, w) ≤ 2. Development and upgrade of such results are presented in this paper. In addition, Borel exceptional zeros and poles seem to appear in special situations.

• 충청수학회지
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• 제27권4호
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• pp.603-614
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• 2014

We introduce the concepts of ($\mathcal{T}^{{\mu}{\gamma}}$, $\mathcal{U}^{{\mu}{\gamma}}$)-double (r, s) (u, v)-semiclosures and ($\mathcal{T}^{{\mu}{\gamma}}$, $\mathcal{U}^{{\mu}{\gamma}}$)-double (r, s)(u, v)-semiinteriors. Using the notions, we investigate some of characteristic properties of double pairwise (r, s)(u, v)-semicontinuous, double pairwise (r, s)(u, v)-semiopen and double pairwise (r, s)(u, v)-semiclosed mappings.

• 충청수학회지
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• 제30권1호
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• pp.1-13
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• 2017

We introduce the concepts of (${\mathcal{T}}^{{\mu}{\gamma}},{\mathcal{U}}^{{\mu}{\gamma}}$)-double (r, s)(u, v)-preclosures and (${\mathcal{T}}^{{\mu}{\gamma}},{\mathcal{U}}^{{\mu}{\gamma}}$)-double (r, s)(u, v)-preinteriors. Using the notions, we investigate some of characteristic properties of double pairwise (r, s)(u, v)-precontinuous mappings.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제9권2호
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• pp.105-109
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• 2009

In this paper, we introduce the concepts of fuzzy pairwise (r, s)-irresolute, fuzzy pairwise (r, s)-presemiopen and fuzzy pairwise (r, s)-presemiclosed mappings in smooth bitopological spaces and then we investigate some of their characteristic properties.