• Journal of Korean Society of Rural Planning
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• v.9 no.3 s.20
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• pp.41-46
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• 2003

The study was focused on setting priority for future core technologies in rural development and resources using AHP. The technologies were derived by Delphi method. Evaluation criteria for the priority setting were decided as 'technology', 'market oriented', and 'public concerns' by council. The future core technologies were divided as four groups by importance and R&D level. Technologies in upper two groups were considered in the study. Group I had high importance and high R&D level. Group II had high importance and lower R&D level. Questionnaires were given to 9 specialists in agricultural resources. As the results, 'public concerns' was decided as a most important evaluation criterion. The most important technologies are "technology developing for animal feces and urine treatment, and restoration it to farm land" in group I, and "technology developing for agricultural by-products as energy source" in group II.

• Journal of Biosystems Engineering
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• v.29 no.2
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• pp.187-194
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• 2004

The study focused on setting priority among the future core technologies that were derived by Delphi in agricultural management ＆ information using analytic hierarchy process(AHP). Items for setting priority were decided as ‘technology’, ‘market’, and ‘public concerns’by council. The future core technologies were divided into four parts by importance and R＆D level. Technologies which consisted of upper two parts having higher importance were considered in the study. Questionnaires were given to 9 specialists in biosystems engineering. As the results, ‘market’ was decided as a most important item. The most important technologies were ‘Developing technology and system of post harvest processing for higher quality rice’ in group I, and ‘Developing sensor technology to evaluate quality and safety for agricultural products’ in group II.

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2006.09b
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• pp.1130-1131
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• 2006

We found that the """interface reaction between Ni-based alloy bond, diamond, and steel core is very critical in bond strength of diamond tool. None element from metal bond diffuses into the steel core but the Fe element of steel core was easily diffused into the bond. This diffusion depth of Fe has a great effect on the bonding strength. The Cr in steel core accelerated the Fe diffusion and improved the bond strength, on the other hand, carbon decreased the strength. Ni-based alloy bond including Cr was chemically bonded with diamond by forming Cr carbide. However, the Cr and Fe in STS304 were largely interdiffused, the strength was very low. The Cr passivity layer formed at surface of STS304 made worse strength at commissure in brazing process.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.3
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• pp.144-152
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• 2016

This paper reports a descriptive correlation to explore the relationships among core competencies, nursing professionalism, and employment strategies of nursing students. Data collection was conducted from November 1 to November 28, 2014. A structural questionnaire were completed by 107 nursing students of 4th year in B city and G city. The data was analyzed using the SPSS 22.0 program. The mean value of the study was as follows: core competencies, 3.57; nursing professionalism, 4.22; and employment strategies, 3.69. A positive relationship was observed between the core competencies and nursing professionalism (r=.401, p<.001), core competencies and employment strategies (r=.559, p<.001), and nursing professionalism and employment strategies (r=.465, p<.001). The factors affecting the employment strategies of the study participants were core competencies (${\beta}=.43$, p<.001), nursing professionalism (${\beta}=.28$, p=.001), school score (${\beta}=-.19$, p=.011), which explained approximately 42% (F=24.82, p<.001). Overall, this study indicates that the core competencies and nursing professionalism, employment strategies of Nursing students have a significant positive relationship. Therefore, it is necessary to improve the curriculum, program development and repeat research for improving the core competencies, nursing professionalism, and employment strategies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.6
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• pp.677-682
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• 2018

The relationship-type research and development (R&D) portfolio is a method for selecting core technologies based on their unique purposes and characteristics when the criteria for selecting them are independent. This study presents a relationship-type R&D portfolio method as a way to derive core technologies, and describes the methodology by dividing it into three steps: 1) analyze the relationships between selection criteria and analytical indicators, 2) form a portfolio matrix that best matches each selection criteria, and 3) derive the core technologies. In this study, the relationships between four selection criteria for selecting core technologies and the analytical indicators for identifying the technology level, economics, and the technology itself, are written in a table with HoQ. Based on the relationship table, analytical indicators to be considered were derived to satisfy each selection criterion, and the derived analytical indicators and the selected technologies were constructed with two axes in the portfolio matrix. The satisfied portfolio, P0, that satisfies all four criteria, and the portfolio, P1~P4, that satisfies selection criteria based on the unique characteristics of the four criteria, were constructed, and core technologies derived. The selected core technologies can be utilized in selecting a core area against the future security environment through a process like key word analysis based on the specifications.

• The Journal of Korean Academic Society of Nursing Education
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• v.24 no.3
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• pp.279-289
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• 2018

Purpose: The study is to confirm the influence of self-efficacy, critical thinking disposition, self-leadership, and communication competency on the core competencies of the preceptor. Methods: Data were collected from August 27 to September 7, 2017 using structured questionnaires for 127 preceptors at a general hospital located in Korea. SPSS/Win 23.0 was used to analyze the frequency, percentage, mean, standard deviation, independent t-test, one-way ANOVA, Pearson's correlation coefficients, and stepwise multiple regression. Results: The mean score of the core competencies of the preceptors was $3.94{\pm}0.35$ (range 1-5); self-efficacy was $3.88{\pm}0.49$; critical thinking disposition was $3.54{\pm}0.36$; self-leadership was $3.66{\pm}0.39$; communication competency was $3.71{\pm}0.35$. There were no statistically significant differences between the core competencies of the preceptor and general characteristics. The core competencies of the preceptors were significantly correlated with self-efficacy (r=.61, p<.001), critical thinking disposition (r=.69, p<.001), self-leadership (r=.59, p<.001), and communication competency (r=.58, p<.001). The core competencies of the preceptors were affected by critical thinking disposition (${\beta}=.54$, p<.001), followed by communication competency (${\beta}=.24$, p<.001). The explanatory power by the factors was 51% (F=63.66, p<.001). Conclusion: The results suggest that critical thinking disposition and communication competency are important predictors of the core competencies of the preceptors.

• Journal of the Korea Society of Computer and Information
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• v.29 no.2
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• pp.145-152
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• 2024

This study was conducted to investigate the effects of self-efficacy, major satisfaction, and clinical practice stress on the confidence in performing core nursing skills of nursing students. Data were collected through a structured questionnaire for 142 3,4th graders of K University's nursing department in Gyeongsangbukdo and analyzed using the SPSS/WIN 22.0 program. As a result of the study, the confidence in performing core nursing skills according to general characteristics showed a significant difference in grade(F=-2.08, p<0.05). Confidence in performing core nursing skills showed a significant positive correlation with self-efficacy(r=.50, p<.001) and major satisfaction(r=.62, p<.001), and factors influencing confidence in performing core nursing care were found to have 41.7% explanatory power with major satisfaction(β=.49, p=.002) and self-feeicacy(β=.24, p<.001). Based on the results of this study, it seems necessary to establish an educational strategy to improve the confidence in performing core nursing skills and to improve self-efficacy and major satisfaction.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• v.4B no.2
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• pp.54-58
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• 2004

This paper presents the iron core design method of a high temperature superconducting (HTS) transformer considering voltages per turn (V/T). In this research, solenoid type HTS coils were selected for low voltage (LV) winding and double pancake coils for high voltage (HV) winding, just as in conventional large power transformers. V/T is one of the most fundamental elements used in designing transformers, as it decides the core cross sectional area and the number of primary and secondary winding turns. By controlling the V/T, the core dimension and core loss can be changed diversely. The leakage flux is another serious consideration in core design. The magnetic field perpendicular to the HTS wire causes its critical current to fall rapidly as the magnitude of the field increases slowly. Therefore in the design of iron core as well as superconducting windings, contemplation of leakage flux should be preceded. In this paper, the relationship between the V/T and core loss was observed and also, through computational calculations, the leakage magnetic fields perpendicular to the windings were found and their critical current decrement effects were considered in relation to the core design. The ％ impedance was calculated by way of the numerical method. Finally, various models were suggested.

• Transactions of the Korean Society of Mechanical Engineers
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• v.12 no.2
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• pp.349-358
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• 1988

Natural convection velocity and temperature profiles are obtained approximately in the core at boundary layer flow regime for varying Prandtl number in a low aspect ratio rectangular Enclosure. Analysis is based on the formally obtained core flow equations using the multiple scales method. Results show good agreement with the existing works for $P_{r}$ ~ 1. No comparison, however, is possible yet for $P_{r}$ >> 1 and $P_{r}$ < 1 due to the lack of available date. It is shown here that boundary layer flow regimes are governed by two parameters, A $R_{a}$$^{1}$4/ and A( $P_{r}$ $R_{a}$)$^{1}$4 for $P_{R}$.geq. 1 and $P_{r}$ < 1 respectively.ely.ively.ely.y.

• Proceedings of the Korean Geotechical Society Conference
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• 2010.03a
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• pp.871-876
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• 2010

When surface Concrete Face Rock fill Dam constructs than existent center core type rock fill dam, it is much prevalent form in domestic these day by quality control of that is profitable and weather condition etc. of coreZone. C.F.R.D is less research about seismic survey(Refractional Seismic Prospectin, Resistivity Prospecting) of levee body than fill dam. Thus as C.F.R.D seismic survey is less, safety of that consist is short most development flue is high reason. That is not checking target of minuteness safety diagnosis and so on by short operation period. Wish to analyze inquiry incidental and difference with center core type dam and acquire C.F.R.D preservation administration upper necessary inquiry condition forward hereafter.