• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.5 no.2
• /
• pp.34-38
• /
• 2002

This studies were performed to determine the effects of indoor relative humidity conditions on the growth of Arachniodes aristata and Pyrrosia lingua in native fern and investigate an applicable possibility of indoor plants. The response of Arachniodes aristata and Pyrrosia lingua was evaluated in growth chamber (KG-8407-87) to 3 relative humidity and 3 soils. Relative humidity was applied to 25%, 50%, 90%; soils were prepared based on soil mixture(SM), top field soil(TF), masa soil(MS). Results of experiments are as follows ; 1. Under a low humidity condition, such as 25%, Water contents, chlorophyll content, ornamental value of Arachniodes aristata and Pyrrosia lingua decreased much more a 50-90%. 2. The growth of Arachniodes aristata were best in pots under a soil mixture(SM) but Pyrrosia lingua were field top soil(FT) under 25%. It seemed that Pyrrosia lingua due to tolerance of desiccation more than Arachniodes aristata. Though these studies, coefficient of relative humidity and soil was plays an important role in Arachniodes aristata and Pyrrosia lingua growth in indoor environments.

• Human Ecology Research
• /
• v.57 no.3
• /
• pp.329-340
• /
• 2019

The 'Sliver-Spoon-Discourse' is currently witnessing growing complaints about the polarization and a sense of despair among many young people in Korean society. The 'Sliver-Spoon-Discourse' that compares one's subjective socioeconomic status to a spoon implies a sense of psychological superiority or deprivation. The present study empirically tested the current popular 'Sliver-Spoon-Discourse' based belongingness and explored how subjective socioeconomic status may affect the psychology of young people. This study examined the effects of subjective socioeconomic status on individual relative deprivation and subjective well-being. Data were collected from 307 undergraduate students enrolled at universities located in Seoul with both parents alive. The findings of this study were as follows. First, student respondents reported moderate levels of subjective socioeconomic status, relative deprivation, and subjective well-being. Second, after controlling for respondents' gender, age and family income, the students' subjective socioeconomic status was negatively associated with their level of relative deprivation. Finally, after controlling for respondents' sociodemographic characteristics, the students' subjective socioeconomic status was not significantly related to all the three sub-factors of life satisfaction, positive emotion and negative emotion as well as total subjective well-being. The results indicate that 'Sliver-Spoon-Discourse' based belongingness may instigate relative deprivation of young people without affecting their subjective well-being. The implications of the results are discussed for youth programs and policies.

• Korea Trade Review
• /
• v.44 no.4
• /
• pp.129-151
• /
• 2019

The purpose of this study is to determine the Mediating Effects of Job Engagement between Perception in Compensation and Innovation Behavior in Chinese Enterprise Workers. The empirical study was conducted by a questionnaire survey on 700 workers in companies located in the southern area of China. The statistical analysis results revealed the following. First, the perception in compensation of Chinese workers has significant positive effects on the innovation behaviors. And intrinsic compensation has more relative significant effects than extrinsic compensation. Second, the perception in compensation has significant positive effects on the job engagement. In this case, extrinsic compensation has more relative significant effects than intrinsic compensation does. Third, job engagement of workers has significant positive effects on the innovation behaviors. Fourth, job engagement has mediating effects between perception in compensation and innovation behaviors. In conclusion, for the sustainable growth and competitive advantage of Chinese enterprises, it is important to perceive the needs of extrinsic and intrinsic perception in compensation of workers, and to design suitable compensation policies and programs to promote innovation behaviors and job engagement considering the distribution and procedural justice, and also to reflect the needs and job characteristics of workers.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.16 no.5
• /
• pp.397-407
• /
• 2004

It is well known that some key parameters, such as evaporating temperature, refrigerant mass flow rate, face velocity and inlet air temperature, have significant influence on the evaporator performance. However performance studies related to a humid environment have been very scarce. It is demonstrated that the refrigerant mass flow rate, heat flux, water condensing rate and air outlet temperature of the evaporator significantly increase with air inlet relative humidity. As the air inlet relative humidity increases, the latent and total heat transfer rates increase, but the sensible heat transfer rate decreases. The purpose of this study is to provide experimental data on the effect of air inlet relative humidity on the air and refrigerant side pressure drop characteristics for a slit fin-tube heat exchanger. Experiments were carried out under the conditions of inlet refrigerant saturation temperature of 7 $^{\circ}C$ and mass flux varied from 150 to 250 kg/$m^2$s. The condition of air was dry bulb temperature of 27$^{\circ}C$, air Velocity Varied from 0.38 to 1.6 m/s. Experiments Showed that air Velocity decreased 8.7% on 50% of relative humidity 40% of that at degree of superheat of 5$^{\circ}C$, which resulted that pressure drop of air and refrigerant was decreased 20.8 and 8.3% for 50% of relative humidity as compared to 40%, respectively.

• The Journal of Korean Institute for Practical Engineering Education
• /
• v.4 no.1
• /
• pp.7-12
• /
• 2012

There are two ways in general for evaluating the accomplishments used by the universities, one is relative evaluation, the other is absolute evaluation. Recently, Korean universities have had the problem with score inflation due to absolute evaluation. The advantage of relative evaluation compared with absolute evaluation is for us to distinguish one's academic accomplishments from others. However, relative evaluation would lead to over-competition. Through this paper, I tired to analyze how cooperative learning influences the academic accomplishments under relative evaluation. Cooperative learning in the relative evaluation of student accomplishments conducted were divided into three groups. And analyzed a result and following presented about the research which in necessary.

• Proceedings of the Korean Geotechical Society Conference
• /
• 2006.03a
• /
• pp.1358-1366
• /
• 2006

In order to study the effects of shell contents on the liquefaction resistance of the shelly sand, NGI cyclic simple shear tests were performed for the shelly sands with shell contents of 0%, 5%, 10%, 20% and 30% under the effective vertical stress of 50kPa, 100kPa and 150kPa for 40% and 55% of relative density, respectively. Cyclic simple shear test results showed that for the low effective vertical stress, liquefaction resistance increased rapidly with the increase of shell contents in both 40% and 55% relative density. On the other hand, for the high effective vertical stress, the liquefaction resistance increased slightly in 40% relative density whereas the resistance was almost same in 55% relative density. Liquefaction resistance decreased with increasing effective vertical stress for both 40% and 55% relative density. In the same effective vertical stress and shell contents, liquefaction resistance increased with the increase of relative density of sands.

• Journal of Ocean Engineering and Technology
• /
• v.19 no.2 s.63
• /
• pp.53-59
• /
• 2005

The effect of pH on the corrosion characteristics in the dissimilar friction welded zone of IN713LC-SCM440 in the loaded torsional stress was studied. The corrosion experiment was performed for 120 hours on the specimens with five steps of pH. The surface corrosion pattern of the SCM440 area showed global corrosion and narrow pitting, which was caused by galvanic corrosion between friction welded IN713LC and SCM440, but corrosion did not proceeded from the IN713LC area. The average relative electrode potential gradually tends to decrease with the elapse of the immersion time in the acidity area. The average corrosion current also gradually tend to decrease The corrosion rate showed a larger value when the average relative electrode potential was higher and the average relative current was lower. The corrosion rate showed a larger value when the average relative electrode potential was higher in the acidity area, and it showed large when the average relative electrode potential was lower in the alkalinity area.

• CRM연구
• /
• v.3 no.1
• /
• pp.29-47
• /
• 2010

This study is intended to examine the effect of characteristics of museum visitors and visit type on perceived relative status, aesthetic responses, and perceived visit benefits, which in turn affect visitor satisfaction and personal and social participatory behaviors. Research was held for four weeks. A total of 308 questionnaires were collected out of 315 distributed. However, additional 15 were excluded due to inadequate responses. The findings of the study are as follows: While museum visitor characteristics yielded significant effects on the perceived relative status and perceived visit benefit, it did not have significant effects on aesthetic responses. Additionally, while visit types showed considerable impact on perceived relative status, it did not yield significant effect on aesthetic responses or the perceived visit benefit. Perceived relative status of a museum had positive effects on aesthetic responses, but not on the perceived visit benefit. Furthermore, while perceived relative status did not have significant effect on visitor satisfaction, it did have evident effects on the aesthetic response and the perceived visit benefit. Lastly, greater visitor satisfaction was confirmed to contribute to greater participatory behavior in various prospective programs and events offered by museums. Hence, it would be imperative for museums to gear their attention to encourage internal participatory behaviors such as visitor education, donation and charity events, which would consequently transcend to viewing museums more as a public space shared by the general public.

• Journal of Plant Biology
• /
• v.18 no.2
• /
• pp.45-52
• /
• 1975

Effects of air pollutants on vegetation were reviewed and discussed with special reference to sulfur dioxide. Main contents were on the sources, meteorological factors, injury symptoms, relative sensitivity, growth/yield, indicator/diagnosis, combined effects, injury mechanism and effects on plant metabolism, injury diminishing measures, and future research needs.

• Journal of Technology Innovation
• /
• v.24 no.2
• /
• pp.177-205
• /
• 2016

Growing competition is forcing firms to unceasingly achieve innovation for survival. In a response to increased competition, firms invest in R&D. In this vein, this study focuses on the relation between competition and R&D investments of firms. To this end, we decompose competition into actual and potential competition first and then empirically examine effects of each competition on firms' R&D investments. Further, this study also focuses on moderating roles of firms' performance relative to their aspiration level on these relations. By using Compustat data, we found that actual competition hinders firms' R&D investments, but potential competition enhances R&D investments. In addition, the effects of actual and potential competition were moderated by firms' performance relative to their aspiration level. Specifically, negative performance strengthens the negative effect of actual competition on R&D investments, but attenuates the positive effect of potential competition. Moreover, positive performance moderates the effects of each competition in the same direction, but its moderating effects are stronger than negative performance. As such, this research seeks to identify the relations between actual and potential competition and R&D investments of firms and the moderating role of performance relative to aspiration level.