• Journal of the Korean Society of School Health
• /
• v.16 no.1
• /
• pp.67-80
• /
• 2003

The purpose of this study was to find out differences between nursing teachers and non-nursing teachers in sex education, to offer the degree of conducting sex education and teachers' perceptions of teaching ability The subjects were 291 middle and high school teachers in Busan from June 25 to July 22, 2002. The results of this study are as follows. 1. According to the survey of 22 items relating to the degree of conducting sex education, the average of nursing teachers(2.87) was higher than that of non-nursing teachers(2.69). This finding showed that there was a significant difference between both groups(p<.05). 2. According to the survey of 22 items relating to teaching abilities, the average of nursing teachers(2.88) was higher than that of non-nursing teachers(2.63). There was also a significant difference between both groups(p<.01). According to the results of the study, I make the following suggestions. 1. Sex education should be adopted as a regular course and conducted as a school health program in regular curriculum. 2. Compared with non-nursing teachers, nursing teachers conducted sex education frequently and efficiently and their perception of sex education was higher. Therefore, the school policy which requires that sex education should be conducted by nursing teachers only is to be established.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2008.10a
• /
• pp.834-836
• /
• 2008

We demonstrated micro-scale conducting polymer patterning based on a selective surface treatment. A substrate with a patterned photoresist was immersed into OTS (Octadecyltrichlosilnae) solution. The protected substrate areas were hydrophilic after removing the PR resist, where a conducting polymer solution was coated selectively by spin-coating method.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.28 no.4A
• /
• pp.256-266
• /
• 2003

In this paper, scattering characteristics of the rectangular waveguide with elliptical conducting post and equivalent impedance of post are analyzed by mode matching method and generalized scattering method. The scattcring characteristics of rectangular waveguide are varied by the height and eccentricity of elliptical conducting post. When the height of post(2.54mm, 4mm) is small, variation in scattering characteristics appears in total simulated frequency. But as the height of post(7.62mm, 9mm) is increased, it is dominant in higher frequency. The simulated result shows good agreement with the HFSS's result. Proposed structure and analysis method are easily applied to the design and manufacture of waveguide component with elliptical conducting post.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.29 no.2 s.233
• /
• pp.189-196
• /
• 2005

The physical model considered here is a horizontal layer of fluid heated below and cold above with a conducting body placed at the center of the layer. The body has dimensionless thermal conductivities to the fluid of 0.1, 1 and 50. Two-dimensional solution for unsteady natural convection is obtained using an accurate and efficient Chebyshev spectral methodology for different Rayleigh numbers. Multi-domain technique is used to handle a square-shaped conducting body. The results for the case of a conducting body are also compared to those of adiabatic and neutral isothermal bodies. When the dimensionless thermal conductivity is 0.1, a pattern of fluid flow and isotherms and the corresponding time-averaged surface Nusselt number are almost the same as the case of an adiabatic body. When the dimensionless thermal conductivity is 50, a pattern of flow and isotherm and the corresponding surface and time-averaged Nusselt number are similar to those of neutral body. The results for the case of dimensionless thermal conductivity of unity are also compared to those of pure natural convection.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.19 no.8
• /
• pp.832-836
• /
• 2008

In this study, the electromagnetic coupling problem through narrow slit in an infinite conducting screen is considered for the case that the TM polarized plane wave is incident upon the slit. This study aims at explaining the mechanism of the maximum power transmission via the resonated slit using the equivalent circuit. It is shown that the transmitted power through the slit for the case of resonance corresponds to the power normally incident upon the conducting plane of the effective width 1/pi wavelengths, irrespective of the slit width. Some similarities between the maximum power transmissions observed in both the proposed structure and narrow slit in thick conducting screen are described from the viewpoint of equivalent circuit. In addition, it is found that, when the slit is resonated, the transmitted power equal to the scattered power.

• Proceedings of the KIEE Conference
• /
• 1995.11a
• /
• pp.423-426
• /
• 1995

Langmuir-Blodgett technique offers a convenient and elegant way to organic conducting systems for ultra thin films. In conducting systems based on LB films, TCNQ derivatives have been extensively studied as electron acceptor molecules in a large number of organic conducting systems.[1] A very interesting UV-visible spectra of octadecylviologen-$(TCNQ^-)_2$ was obtained from a methylenechloride and acetonitrile mixture, and from Langmuir-Blodgett films. The ESR characteristics of octadecylviologen-$(TCNQ^-)_2$ were studied to understand conducting mechanism and structure of LB films. The ESR spectra infer that the N-dococylquinolinium-TCNQ LB films has anisotropic property. But octadecylviologen-$(TCNQ^-)_2$ does not show angular dependence. As the temperature increases from 350K to 450K, the ESR signal of LB films becomes sharp. Scanning calorimetry(DSC) of octadecylviologen-$(TCNQ^-)_2$ provides the endothermic reaction temperature of the films, 340K, which corresponds to the temperature, 365K, of the new ESR signal.

• Applied Chemistry for Engineering
• /
• v.10 no.2
• /
• pp.287-292
• /
• 1999

The conducting composites were prepared by solution blending of polyaniline (PANI) as a conducting polymer and polycarbonate (PC) as a matrix in chloroform. Also the composites film was prepared by solution casting method. The PANI was protonated with alkylbenzenesulfonic acids, such as camphorsulfonic acid (CSA) or dodecylbenzenesulfonic acid (DBSA). The electrical conductivity of composites prepared by solution casting was enhanced compared with that of compression molding. The electrical conductivity, tensile strength and morphology were observed as a function of the amount of protonating agent as well as PANI complex content. In general, as the PANI complex content was increased, the electrical conductivity increased. In the case of the composite film containing 25 wt % of PANI complex doped with DBSA, the electrical conductivity exhibited 3.18 S/cm.

• Applied Chemistry for Engineering
• /
• v.10 no.2
• /
• pp.281-286
• /
• 1999

The conducting composites were prepared by blending polypyrrole (PPy) as a conducting polymer and nylon6,6 as a matrix. In chemical polymerization of PPy, the oxidizing agent was $FeCl_3$ and dopant was alkylbenzenesulfonic acid, such as camphorsulfonic acid (CSA) or dodecylbenzene sulfonic acid (DBSA). The electrical conductivity and mechanical properties were measured for the amount of dopant and PPy complex, and these morphology observed. When it was doped with DBSA having long alkyl chain and added the PPy complex of 25 wt %, the electrical conductivity was increased up to 0.64 S/cm.

• Journal of the Korean Home Economics Association
• /
• v.45 no.9
• /
• pp.99-111
• /
• 2007

The purpose of this study was to find the effects of reverse mortgage including lands for rural elderly households. The data were drawn from 2005 Farm Household Economy Survey. And 1,165 households, which householder age were 65 to 75 and owned lands, were selected. The major findings as follows; First, in the case of conducting mortgage using only lands in rural area, the average substitute rate of current consumption was found to be over 100%(LTV=100%). This result implied that the conducting mortgage with land could be very effective for enhancing economic well-being of rural elderly households. Second, in the case of conducting mortgage using only shelters in rural area, the average substitute rate of current consumption was found to be only 25.7% (LTV=100%). This result implied that the conducting mortgage with only shelters could be no use for enhancing economic well-being of rural elderly households. Third, with FTA, it is time to rebuild agribusiness from small farm with family business to scale of farm business. It is expected the mortgage system with lands may very effective for not only enhancing economic well-being of rural elderly households, but for better farm business.

• Journal of Electrochemical Science and Technology
• /
• v.1 no.1
• /
• pp.25-30
• /
• 2010

This study demonstrated the synthesis of high-surface-area metal-free carbonaceous electrodes (CE) from anodic aluminum oxide (AAO) templates, and their application as supercapacitors. Multi-walled Carbon nanotubes (MWCNTs) were interwoven into a porous network sheet that was attached to one side of AAO template through a vacuum filtration of the homogeneously dispersed MWCNT toluene solution. Subsequently, the conducting polymer was electrochemically grown into the porous MWCNT network and nanochannels of AAO, leading to the formation of a carbonaceous metal-free film electrode with a high surface area in the given geometrical surface area. Typical conducting polymers such as polypyrrole (PPY) and poly(3,4-ethylenedioxythiophene) (PEDOT) were examined as model systems, and the resulting electrodes were investigated as supercapacitors (SCs). These SCs exhibited stable, high capacitances, with values as high as 554 F/g, 1.08 F/$cm^2$ for PPY and 237 F/g, 0.98 F/$cm^2$ for PEDOT, that were normalized by both the mass and geometric area.