• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.28 no.4
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• pp.337-346
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• 1992

Hydroacoustic surveys were conducted in the East China Sea, in the summers of 1990-1991 to investigate the distribution and migration behavior of fish, such as the diel changes in the distributions of fish, the thermoselection behavior of fish, and the fish reactions to a surveying vessel. The hydroacoustic observations were taken with a scientific echo sounder operating at 50kHz and a microcomputer-based echo processor. Fish samples were collected by bottom trawling and temperature was measured with a DBT system. The patterns of fish distributions were compared with the vertical profiles of water temperature. The results obtained can be summarized as follows: 1. The time series of hydroacoustic observations on the downward migration at dawn in the central region of East China Sea showed that the migration rate was 0.24 m/min. In this region, most of the fish collected by bottom trawling during the surveys were squid (Photologio edulis f. budo) and horse mackeral (Trachurus japonicus). 2. The hydroacoustic observations, which together associated with temperature data, indicated that squid and horse mackeral concentrated nocturally in a narrow vertical band of thermocline, particularly in summer when the survey region was strongly stratified. This result suggest that the nocturnal vertical distribution of these species evidently is controlled by temperature. 3. When the survey vessel, that is running at a speed of 11 knots, has suddenly stopped, the fish which concentrated beneath the transducer showed a strong avoidance reaction in the form of rapid downward migration. After a few minutes, the descending reaction disappeared and the fish slowly began the upward migration toward their original swimming positions. Trawl data suggest that the fish, which showed the avoidance reaction, was Liparis tessellatus.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.6 no.3
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• pp.477-492
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• 1999

The disease patterns among the Korean was shifted from acute and infectious diseases to chronic diseases. According to the these disease patterns trends, people have concerned about the health promotion and health behaviors. Pender's(1996) revised health promotion model(HPM) is consist of three categories; Individual characteristics and experiences, Behavior-specific cognitions and affect, behavioral outcome. Of these categories, individual characteristics and experiences, this category of variables is considered to be of biological, psychological and socio-cultural personal factors, especially, individual fatigue. Futhermore. these variables constitute a critical core for nursing intervention, as they are subject to modification through nursing actions. But there is no few the research of the relationship between the fatigue and health promotion. Therefore, the purpose of this study is to investigate the correlation between the fatigue and health promoting life style among a rural college students. Additionally, this descriptive correlational study identified the relation of demographic factors and fatigue, health promoting life style. From June 20 to 26, 1998, a convenience sample of 270 college students completed the questionnaire of the fatigue and health promoting life style profile which were developed by the Yoshitake(1978) and Walker, et al.(1987), respectively. The descriptive correlational statistics, mean, t-test, ANONA, Pearson correlation coefficient were used to analyze the data gathered with SAS pc+ program. The results were as it follows: 1. The average fatigue score of the subjects was $64.93{\pm}12.89$. Fatigue scores by subcategory were physical symptoms($23.5{\pm}4.87$). psychological symptoms($22.11{\pm}4.66$) and neuro-sensory symptoms($19.32{\pm}5.14$). With the respect to the demographic characteristics of the subjects, there were statistically significant differences between the demographic factors and fatigue, especially, sex(t==3.69 p<0.01), major(t=-2.89 p<0.01). the experience of family illness(t=2.76 p<0.01). 2. The average health promoting life style item score of the subjects was $2.33{\pm}0.33$. In the subcategories, the highest degree of performance was self-actualization(2.94), following interpersonal support(2.81). stress management(2.33), exercise(2.20), nutrition(2.10), and the lowest degree was health responsibility(1.73). There were the significant differences on the learning of health education(t=2.00 p<0.01). religion(F=3.01, p<0.05), circle activity(t=2.07, p<0.05), nutrition control(t=5.25, p<0.01) of demographical factors with the health promoting life style. 3. The correlation between the fatigue and health promoting life style made statistically no significance(r=-0.09731, p>0.05). But there was negative significant relationship between health promoting life style and psychological symptom as a fatigue subcategory(r=-0.15721, p<0.05). The self-actualization showed negative significant correlation with all fatigue subcategory. The health responsibility showed significant relationship with total fatigue(r=0.13050. p<0.05). For further research, it suggests to replicate the correlational and causal study between the fatigue and the health promoting life style using the another fatigue scale which is able to measure the subjective and objective fatigue degree. And it needs to develop the nursing intervention program for maintaining and promoting the health behavior as well as for decreasing the college students's fatigue.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.560-568
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• 2016

The purpose of this study was to investigate the level of character, critical thinking disposition, professional self-concept, and adjustment to college life, as well as to identify the factors influencing the adjustment to college life in nursing students. The study was conducted on 166 nursing students in C and J Provinces, between May 25th and June 10th 2016. The data was analyzed using t-test, one-way ANOVA, Pearson's correlation, and multiple regression. The mean score of the adjustment to college life was 3.27 (${\pm}0.56$), character was 4.34 (${\pm}0.59$), critical thinking disposition was 3.48 (${\pm}0.40$), and professional self-concept was 2.76(${\pm}0.32$). There were positive correlations between adjustment to college life and character (r=.512, p<0.001), as well as between critical thinking disposition (r=.508, p<0.001) and professional self-concept (r=.614, p<0.001). The significant factors influencing the adjustment to college life were character, critical thinking disposition, and professional self-concept, which explained 43% of the variance in the adjustment to college life. Based on these findings, programs that develop character, critical thinking disposition, and professional self-concept are necessary for college nursing students in order to promote college adjustment.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.225-233
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• 2018

The purpose of this study was to investigate the level of interpersonal relationship, self differentiation and adjustment to college life as well as to identify the factors influencing the adjustment to college life in nursing students. The study was conducted on 185 nursing students in D and S Province and from November 15th to December 5th 2016. The data was analyzed using t-test, one-way ANOVA, Pearson's correlation and Multiple regression. The mean score of the adjustment to college life was $3.30({\pm}0.49)$ and the interpersonal relationship was $3.73({\pm}0.41)$ and self differentiation was $3.07({\pm}0.32)$. There were positive correlations between adjustment to college life and interpersonal relationship(r=.614, p<.001) and self differentiation((r=.264, p<.001). Significant factors influencing adjustment to college life were interpersonal relationship, self differentiation which explained 39% of adjustment to college life. Based on these findings, programs that develop interpersonal relationship and self differentiation are necessary for college nursing students in order to promote college adjustment.

• Journal of the Korea institute for structural maintenance and inspection
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• v.21 no.4
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• pp.30-38
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• 2017

Recently, research on the development of a composite slab system for shorting the construction period by simplifying the process by omitting the form work and the reinforcement placing is underway. The purpose of this study is to evaluate the long-term behavior of a simplified slab system that replaces the form work and tensile reinforcement using structural deck-plate and replaces the temperature reinforcement using steel fiber reinforced concrete. In the conventional composite deck-plate slab method, w.w.f is generally used for crack control by drying shrinkage. But previous research results by various researchers were pointed out it is not effective to control the shrinkage and temperature cracking. In this study, the long-term cracking and structural behavior of steel fiber reinforced deck plate slab specimen with two continuous spans constructed under typical load conditions were evaluated. Experimental results showed that the number and width of long-term cracks decreased remarkably in the simplified slab specimen, and the deflection was also decreased compared with conventional RC slab specimen. However, in the continuous end of the slab where the negative moment is applied, it is analyzed that reinforced details are necessary to control the crack width in the service load and to recover deflection at load removal.

• Food Science of Animal Resources
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• v.27 no.1
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• pp.67-72
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• 2007

We investigated the effects feeding illite on growth performance and meat quality characteristics in finishing pigs. Forty-eight pigs ($Landrace{\times}Yorkshire{\times}Duroc$; $68.3{\pm}1.6 kg$ average initial body weight) were used in a 50 day experiment. Pigs were randomly placed into one of four experimented diet groups (0, 0.2, 0.5 and 1% illite) and were slaughtered at approximately 110 kg live weight. Although there were no significantly differences in daily weight gain, feed intake and feed conversion between controls and groups fed illite, those values were increased as increasing of illite concentration in feed. Carcass weight, carcass ratio and backfat thickness were not affected by dietary illite supplementation. However, the percentage of A grade carcasses were significantly increased by dietary supplement of 1.0% illite. There were no significantly differences in moisture, crude protein and crude ash between controls and groups fed illite, but the crude fat of 1.0% illite supplemented groups was significantly lower than other groups (p<0.05). All muscles from control and treatment groups had normal pH 5.55-5.68. However, lightness ($L^*$) values of pork decreased as increasing illite supplement. Whereas red-ness ($a^*$) and yellowness ($b^*$) values were not significantly changed. In fatty acid composition, palmitoleic acid and linoleic acid were significantly higher in 1.0% illite dietary group, saturated fatty acid was decreased and unsaturated fatty acid was increased by 0.5-1.0% illite supplementation.

• Food Science of Animal Resources
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• v.27 no.1
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• pp.73-79
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• 2007

We investigated the effects of dietary supplements such as probiotics, illite, active carbon and hardwood vinegar on growth performance and meat quality characteristics in finishing pigs. One hundred fifty pigs ($Landrace{\times}Yorkshire{\times}Duroc$; $32.3{\pm}1.3 kg$ average initial body weight) were used for a 100 day experiment. Pigs were randomly placed into one of five experimented diet groups (control, 0.2% probiotics, 1.0% illite, 1.0% active carbon, and 1.0% hardwood vinegar) and were slaughtered at approximately 110 kg live weight. The addition of 1.0% active carbon and hardwood vinegar caused a decrease in free water while, WHC (water holding capacity) was higher compared with controls. Drip loss in hog flesh was decreased by feeding probiotics, illite, active carbon and hardwood vinegar. Cooking loss was decreased when hogs were fed hardwood vinegar. Lightness ($L^*$) and redness ($a^*$) were no difference between the all treatment groups, yellowness ($b^*$) was higher when feeding active carbon and hardwood vinegar by 1.0%. When hogs were fed hardwood vinegar, drip loss was decreased, and meat color was higher in sensory evaluation of fresh meat. In cooked hog meat, meat color and juiciness were higher in hogs fed hardwood vinegar. These results showed that supplementing hog diets with 1.0% hardwood vinegar may noticeably improve the meat quality of finishing hogs.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2005.04a
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• pp.441-445
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• 2005

태화강 주변지역 지하수의 계절적 수질 변화를 보고자 현장측정 항목(수온, pH, 알칼리도, 전기전도도), 일반 항목(증발잔류물, 총경도, 과망간산칼륨소비량), 음이온물질$(F^-,\;Cl^-,\;{NO_3}^-,\;{SO_4}^{2-})$, 양이온물질$(Ca^{2+},\;Mg^{2+},\;K^+,\;Na^+)$등으로 구분하여 분석하였으며, 총 70개 지점을 대상으로 2004년 5월, 10월 2회에 걸쳐 실시하였다. 지역별 수질특성을 살펴보면 남구지역은 $Ca-Mg-HCO_3,\;Ca-Mg-HCO_3-Cl,\;Ca-Mg-Na-Cl-HCO_3,\;Na-Cl-HCO_3$의 4가지 유형이 전체 시료의 74%를 차지하였으며, $Ca-Mg-HCO_3$형이 가장 우세하게 나타났고, 중구지역 지하수에서는 $Ca-Mg-HCO_3-Cl,\;Ca-Mg-Na-HCO_3-Cl,\;Ca-Mg-HCO_3$의 3가지 유형이 전체 시료의 60%를 차지하는 것으로 나타났으며, 이중에서 $Ca-Mg-HCO_3-Cl$형이 가장 우세하게 나타났다. 두 지역의 수질 변화를 살펴보면. 전기전도도는 남구는 $731.5{\mu}s/m^3$에서 $529.8{\mu}s/m^3$, 중구는 $752.6{\mu}s/m^3$에서 $621.6{\mu}s/m^3$로 201.7, $131.0{\mu}s/m^3$만큼 작아져 두 지역 모두 같은 양상을 보였으나, Hardness 및 TDS의 경우 남구지역은 5월보다 10월에 평균, 최대값이 모두 낮게 나타났다. 또한 $Cl^-$의 경우 지역적, 계절적으로 큰 차이를 보이고 있으며 남구는 5월 68.2mg/l, 10월에는 61.7mg/l로 다소 감소하였으나 중구의 경우 5월 75.5mg/l, 10월 122.1mg/l로 다소 증가한 것으로 나타났다. 양이온 분포 비율 및 농도는 비슷하게 나타났으며, 계절적으로 5월보다 10월에 모두 높게 나타났다. 두 지역 모두 양이온물질 중 나트륨의 분포비율 및 농도가 5월보다 10월에 다소 높게 나타났다. 연구 지역 지하수의 계절적 수질변화를 살펴보면 두 지역간의 지하수질 및 분포특성에 있어 다소 차이를 보이고 있으며, 특히 중구 지역에서 5월보다 10월에 나트륨과 염소이온의 증가가 다소 나타나는 것으로 관찰되었다. 또한 연구지역 중 특이지점($Cl^-$:1,000mg/l이상)은 남구는 5월에 2개에서 10월에는 3개 지점으로 증가하였으며, 중구는 5월, 10월 모두 4개 지점으로 나타났다.

• Journal of Wetlands Research
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• v.19 no.3
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• pp.271-278
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• 2017

Low impact development (LID) technology has been recently applied for the treatment of nonpoint source pollutants. Rain garden is one of the widely used LIDs since it utilizes various mechanisms such as biological and physico-chemical treatment to reduce pollutants. However, problem such as clogging has been one of the issues encountered by the rain garden that do not undergo constant maintenance. Therefore, this research was conducted to develop and determine the component arrangement of a rain garden system for a more efficient volume and pollutant reduction. Two hybrid rain garden systems having different characteristics were developed and evaluated to determine the optimum design and arrangement of the system. The results showed that the components arranged in a series manner showed a volume reduction of 93% and a pollutant reduction efficiency of approximately 99%, 93% and 95% was observed for particulates, nutrients and heavy metals, respectively. While when the system is connected in a combined series-parallel, the volume and average pollutant reduction efficiency for the TSS, nutrients and heavy metals are 65%, 94%, 80% and 85%, respectively. Moreover, the component arrangement in the order of sedimentation tank, infiltration tank and plant bed exhibited a high pollutant reduction efficiency compared when the infiltration tank and plant bed were interchanged. The findings of this research will help in the further development and optimization of rain garden systems.

• Economic and Environmental Geology
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• v.35 no.2
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• pp.121-136
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• 2002

The $CO_2$-rich springs in the Kyungpook Province has been found at 16 locations. Most of the $CO_2$-rich springs outflow along either fault zones or the geologic boundary between Mesozoic granites and their adjacent rocks. The $CO_2$-rich water samples show a high $CO_2$ concentration ( $P_{CO2}0.46 to 5.21 atm), weak acidic pHs, wide electrical conductivity values ranging from 422 to 2,280 $\mu\textrm{S}$/cm, and high re content. They are classified into the ca-HC $O_3$ type in chemical composition.$\delta$$^{18}$ O and $\delta$$^2$H data indicate that $CO_2$-rich water is meteoric origin. The $\delta$$^{13}$ C values (-1.5$\textperthousand$ to -6.1$\textperthousand$ PDB) suggest that dissolved $H_2$C $O_3$$^{0}$ C $O_3$- are mainly derived from a deep-seated $CO_2$ and carbonate minerals. The thermodynamic equilibrium state between $CO_2$-rich water and major minerals, and hydrochemical characteristics indicate that major source minerals determining the chemical composition of $CO_2$-rich water are carbonate minerals, plagioclase, K-feldspar and Fe-oxides. Under high $CO_2$ pressure and the weak acidic condition, most of the $CO_2$-rich water samples are thermodynamically in the dissolution state with respect to albite and carbonate minerals.