• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.571-579
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• 2019

The purpose of this study was to identify levels of hearing handicap, depression, and self-efficacy, and to determine the effect of hearing handicap on depression and self-efficacy in home-based elderly. Data were collected from August to September 2017. Two hundred and seventy eight elderly living at home in three cities participated in this study. Data were analyzed using the independent t-test, one-way ANOVA, Scheffe's test, Pearson's correlation coefficients, and by multiple regression analysis using SPSS Ver. 20.0 for Windows. Mean levels of hearing handicap, depression, and self-efficacy were 10.91 (${\pm}19.83$), 4.75 (${\pm}3.90$), and 46.87 (${\pm}6.75$) respectively. A statistically significant positive correlation was observed between hearing handicap and depression (r=.228, p<.001), and significant negative correlations were found between hearing handicap and self-efficacy (r=-.284, p<.001) and between depression and self-efficacy (r=-.526, p<.001). Hearing handicap had a negative effect on self-efficacy (${\beta}=-.161$, p=.008) and its explanatory power was 27.2%. The study results suggest that the developments of multidisciplinary interventions and education programs are important to prevent or minimize hearing handicap in the elderly.

• Journal of Digital Convergence
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• v.17 no.5
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• pp.225-233
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• 2019

The purpose of this study was to investigate state-anxiety, dyadic adjustment and pregnancy stress in pregnant women and to identify factors influencing pregnancy stress. Data were collected 158 pregnant women. Data were analyzed using t-test, ANOVA, Scheffe's test, Pearson's correlation coefficient, stepwise regression analysis. There was statistically significant difference in state-anxiety on variable such as age. There were statistically significant difference in dyadic adjustment on variables such as education, religion, income. There was not statistically significant difference in pregnancy stress on variables. Pregnancy stress was positively correlated with state-anxiety. Pregnancy stress was negatively correlated with dyadic adjustment. State-anxiety was negatively correlated with dyadic adjustment. Factor influencing pregnancy stress was state-anxiety, which explained 25.1%. Findings provide useful information for further studies in pregnancy stress of pregnant women. Therefore, to reduce pregnancy stress of pregnant women, it is necessary to standardized nursing intervention program.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.39 no.6
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• pp.609-618
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• 2021

The spread and damage of COVID-19 are putting significant pressure on the world, including Korea. Most countries place restrictions on movement and gathering to minimize contact between citizens and these policies have brought new changes to social patterns. This study generated traffic volume data on the scale of a road network using taxi movement data collected in the early stages of the COVID-19 third pandemic to analyze the impact of COVID-19 on movement patterns. After that, correlation analysis was performed with the data of confirmed cases in Daegu Metropolitan City and Local Moran's I was applied to analyze the effect of spatial characteristics. As a result, in terms of the overall road network, the number of confirmed cases showed a negative correlation with taxi driving and at least -0.615. It was confirmed that citizens' movement anxiety was reflected as the number of confirmed cases increased. The commercial and industrial areas in the center of the city confirmed the cold spot with a negative correlation and low-low local Mona's I. However, the road network around medical institutions such as hospitals and spaces with spatial characteristics such as residential complexes was high-high. In the future, this analysis could be used for preventive measures for policymakers due to COVID-19.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.5B
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• pp.437-444
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• 2010

Soil moisture has been recognized as the essential parameter when understanding the complicated relationship between land surface and atmosphere in water and energy recycling system. It has been generally known that it is related with the temperature, wind, evaporation dependent on soil properties, transpiration due to vegetations and other constituents. There is, however, little research concerned about the relationship between soil moisture and these constitutes, thus it is needed to investigate it in detail. We estimated the soil moisture and then compared with field data using the hydrometerological data such as atmospheric temperature, specific humidity, and wind obtained from the Flux tower in Selmacheon, Korea. In the winter season, subterranean temperature showed highly positive correlation with soil moisture while it was negatively correlated from the spring to the fall. Estimation of seasonal soil moisture was compared with field measurements with the correlation of determination, R=0.82, 0.81, 0.82, and 0.96 for spring, summer, fall, and winter, respectively. Comprehensive relationship from this study can supply useful information about the downscaling of soil moisture with relatively large spatial resolutions, and will help to deepen the understanding of the water and energy recycling on the earth's surface.

• Journal of the Korean Society of Food Science and Nutrition
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• v.25 no.1
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• pp.11-20
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• 1996

본 조사는 경기도 용인에 위치한 명지대학교의 남녀 대학생 202명의 대상으로 일반 환경과 혈철지질, 혈압, 체지방량 측정 검사를 중심으로 이루어졌으며, 조사 분석한 결과를 요약하면 다음과 같다. 1. 조사 대상자의 신체발달 상황을 보면 남자의 평균 신장과 체중 및 비체중치는 173.1cm, 65.9kg, 38.03이였고, 여자는 16.7cm, 52.4kg, 32.6로 한국인 성인의 표준치와 매우 유사한 수치였다. 체지방량 비율은 남자 16.4, 여자 24.0으로 나타 설별에 따른 차이가 뚜렸하였다. 2, 조사 대상자들의 수축기와 이완기의 혈압은 평균 $125\pm123mmHg,$ $77.2\pm11.1mmHg이고,$ 남자와 여자의 수축기 혈압은 각각 $132.3\pm1.9mmHg,$ $118.1\pm1.6mmhg로$ 정상 범위였다.확장기 혈압은 남녀 각각 $80.5\pm11.0mmHgm$ $73.9\pm102.m,Hg였으며$ 역시 정상범위에 포함되었다. 3. 혈청 지질의 검사 결과는 Tc는 남자 175.2mg/dl, 여자 183.6mg/dl로 나타났고 TG는 남자 108.4mg/dl, 여자 72.0mg/dl로 나타나 통RP적으로 유의한 차이가 있었다. (p<0.05). 또한 HDL-C는 남자 59.6mg/dl , 여자 64.3mg/dl 로 성별에 다른 유의적인 차이를 보였고 (p<0.05), LDL-C도 역시 남자 93.9mg/dl, 여자 104.8mg/dl로 나타나 통계적으로 성별에 다른 차이가 뚜렷하였다. (p<0.01). 조사결과 다른 연령층의 성인과는 달리 TG를 제외한 TC, H이-C, L이-C에 있어서 남자가 여자 보다 더 낮은 수치를 보였다. 4. 혈압에 따라 세 그룹으로 분류한 후 혈청 지질과의 관계를 보면, 수축기 혈아이 증가함에 따라 TC, TG, LDL-C은 증가하는 경향을 보였으며, HDL-C은 감소되었으나 통계적으인 유의성은 없었다. 이완기혈압의 겨우 89mmHg 이하 보다 90~94mmHg의 경우에 유의적으로 증가되었으며 (p<0.05) HDL-C은 감소하였으나 유의성은 없었다. 5. 혈정 지질과 비만도의 관계는 남녀 모두 양의 상관관계를 나타냈으나 여자보다 남자에서 뚜fut이 나타났다. 남자의 겨우 TC의 수치가 KI에 따라 110% 미만일 때 $169.7\pm31.5mg/dl,$ 110~120%일 때 $193.8\pm36.8mg/dl,$ 120% 이상 일 때 $202.2\pm29.3mg/dl로$ 비만도에 따른 유의적인 증가를 (p<0.05)보여주었으나 여자의 경우는 유의적인 차이가 없었다. TG의 수치는 남자의 경우 KI가 110%미만인 그룹은 $102.9\pm108.2mg/dl,$ 120% 이상인 그룹은 $112.2\pm40.0mg/dl로$ 비만도가 증가함에 따라 TG가 증가되었으나 유의적인 차이는 없었으며, 여자의 경우 유의적인 차이가 없었다. 남자의 경우 HDL-C은 비만도가 증가함에 따라 유의적으로 감소하는 경향을 보였으나(p<0.05) 여자의 경우는 유의적인 차이가 없었다. 6. 조사 대상자의 체지방량 측정결과 체기방률은 남자의 겨우 16.4% 여자의 겨우 24.0%로 나타나 여자의 체지방률이 남자보다 높았다. 7. 신체계측치, 혈압, 혈청 지질간의 상관관계를 살펴보면 TC, TG는 KI, BMI와 유의적인 양의 상관관계를 보였고 (p<0.01), HCL-C은 비체중, BMI, LBM, TBM와 유의적인 음의 상관관계를 보였으며, (p<0.01), KI, SBP와도 음의 상관관계를 보였다. (p<0.05), LCL-C는 KI와 유의적이인 양의 상관관계를 나타내었으며 (p<0.01) BF%, TBF, BMI와도 양의 상관관계를 나타냈었다. (p<0.05). 또한 LPH, Al는 모두 나이, 비체중, BMI, KI와 유의적인 양의 상관관계를 나타내었다. (p<0.01). 이상을 종합해 보면 본 조사 대상자들은 비만도가 높아질수록 혈청 지질 수준이 놓았으며, 이완기 혈압도 형철 지질과 상관관계를 나타났다. 대학생의 혈청 지질과 체지방에 대한 자료가 부족함을 고려할 때, 본 조사자료가 학생의 혈청지질의 체지방에 대한 기초 자료로서 이용될 것을 기대하며 보다 다각적인 연구가 이루어지기를 바라는 바이다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.39 no.12
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• pp.1199-1206
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• 2015

In this study, the exhaust gas of a diesel engine operating on biodiesel(BD) fuel(a mixture of diesel and soybean oil) was investigated for different fuel mixing ratios in the range of BD3 to BD100. The experiments were conducted using injection pressures of 400, 600, 800, 1000, and 1200 bar. The Pearson correlation coefficient and Spearman rank-order correlation coefficient were used to quantify the NOx and Soot emissions based on the fuel mixing ratio and injection pressure. Consequently, the Pearson correlation coefficient obtained for NOx and Soot emissions according to the mixing ratio and injection pressure was -0.811 and the corresponding Spearman rank-order correlation coefficient was -0.884, which indicated that the correlation of the NOx and Soot emissions was linear. Thus, the NOx and Soot have a trade-off relationship. Moreover, at each injection pressure, the Pearson correlation coefficient was a negative number, which indicated an inversely proportional relationship between NOx and Soot.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.378-385
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• 2011

The purpose of this study was to investigate the relationship of job-stress, job-family conflict, and mental health according to lifestyles of married office worker. Data were collected by structured questionnaires form 185 married office worker by convenient sampling methods from May to August 2011. In our research outcomes, it found that job-stress was positively related to job-family conflict in the self-belief type, family-centralized type, heeding duty type and creative type. Job-family conflict was negatively related to mental health in the heeding duty type. And job-stress was positively related to metal health in the creative type and individual success pursuing type. These findings show that it is necessary to develop therapeutic psychosocial nursing intervention and to locate social-support-resources for reducing high job-stress, solving job-family conflict, and improving mental health in the married office worker.

• Journal of Digital Convergence
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• v.16 no.2
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• pp.235-242
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• 2018

The purpose of this study is to provide basic data for human resource management and efficient hospital management of organization by checking the effect of psychological contract of nurses on voice behavior. It is a descriptive research study that survey nurses who consented responded to the research questions. As a result, nurse practitioners showed a low level of perceptions of organizational commitment, psychological contracts, transactional contract and relational contract. There was a positive correlation between transactional contract and constructive voice(p<.05), and there was a negative correlation between relational contract and destructive voice(p<.05). Therefore, it is necessary to establish a system in which internal and external compensation can be made according to changes in roles of nurses in order to carry out new polices and organizational changes. It is also necessary to improve the organizational culture so that nurses can actively participate in policy and organizational change.

• Economic and Environmental Geology
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• v.41 no.1
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• pp.115-131
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• 2008

The aim of this study is to analyze relationships between topography/geology which affects physically groundwater regime and groundwater yield properties in Pohang City using Geographic Information System (GIS). For the purpose, topographic factors such as ground elevation, ground elevation difference, ground slope, and ground regional slope, and hydrogeologic unit, and groundwater yield properties factors such as transmissivity, specific capacity, and well yield, were constructed to spatial data base. Then the relationships between topography, geology and groundwater yield properties were analyzed quantitatively using GIS overlay technique. As the results, ground-water yield of unconsolidated sediments and porous volcanic rocks is the highest among the hydrogeologic units of study area, and clastic sedimentary rock is the lowest. There are positive relationship between the elevation and elevation difference and the groundwater yield properties and negative relationship between the topographic slope and the groundwater yield properties.

• Journal of Environmental Policy
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• v.5 no.3
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• pp.1-24
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• 2006

As the social responsibility of corporations becomes more important, recently, many corporations have made constant efforts to preserve natural environment. Environmental investments had been traditionally thought as cost factors and sources of negative effects on a firm's financial performances. In this study, we explore the relation of financial and environmental performances of Korean corporations. We use default probability as well as ROE as indicators of financial performances. We find that there is positive correlation between ROE and environmental performance, and negative correlation between default probability and environmental performance. This implies that Korean corporations should recognize environmental investment as means of improving corporate value.