• 실천공학교육논문지
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• 제16권4호
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• pp.577-585
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• 2024

This study analyzed the relationship between GPS-based physical activity patterns and mental health using Kaggle Student Life data. Data were collected over a 10-week period from 48 students at Dartmouth College through Android smartphones and included GPS, dark, and phone lock data, and measures such as the Patient Health Questionnaire-9 (PHQ-9), Loneliness Scale, the Positive and Negative Affect Schedule (PANAS), and Perceived Stress Scale. Using latitude and longitude data obtained from GPS measurements, various physical activity indicators were calculated, including the total distance traveled, average distance traveled, average distance traveled in the morning, average distance traveled in the afternoon, average distance traveled in the evening, and average distance traveled in the middle of the night. Pearson's correlation analysis was performed to explore the relationship between GPS-based physical activity patterns and mental health. The study results indicated a significant negative correlation between the average distance traveled in the afternoon and PHQ-9 scores. Results indicated that the higher the afternoon activity, the lower the depressive symptoms. There was a positive correlation be-tween the PANAS-Pos score and the average distance traveled in the evening, indicating that positive emotions tended to increase as evening activities increased. This finding suggests a relationship between physical activity at specific times and mental health.

• 농업생명과학연구
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• 제44권1호
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• pp.33-42
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• 2010

본 연구는 일당증체량, 90kg 도달일령, 등지방두께, 등심단면적 및 정육율에 영향을 미치는 품종, 성, 농장 규모 및 환경요인의 효과를 추정하였다. 2004년부터 2008년까지 농장 검정된 Landrace종 5,902 두 Yorkshire종 18,022두 및 Duroc종 6,601두 등의 3개 품종 총 30,525두의 자료를 이용하였다. 검정종료일령에 대한 보정을 위하여 모델에 공분산 항목을 포함하여 분석하였다. 일당증체량, 90kg 도달일령 및 정육율은 중간규모의 농장에서 유의적으로 우수하게 나타났다. 반면 등지방두께와 등심단면적은 소규모의 농장에서 유의적으로 우수하게 나타났다. 결론적으로 본 연구에서는 품종, 성, 검정종료년도, 검정종료계절 및 농장 규모간의 유의적 차이를 나타내었고, 추후 농장규모에 관한 더 많은 연구가 이루어져야 할 것으로 사료되어지며, 이러한 연구가 양돈 산업의 발전에 이바지 할 수 있을 것이다.

• 한국산학기술학회논문지
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• 제19권11호
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• pp.614-625
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• 2018

본 연구는 간호학생의 적응유연성 수준을 파악하고 적응유연성에 영향을 미치는 요인을 규명하고 간호학생의 적응유연성을 향상시키는 프로그램을 개발하는데 필요한 기초자료를 마련하고자 시행한 서술적 조사연구이다. 자료 수집은 D광역시 일개 대학의 간호학과 학생 중 자발적 참여에 서면 동의한 155명을 대상으로 2018년 4월 15일부터 5월 30일까지 자가보고형 설문조사를 통해 이루어졌다. 변수의 측정을 위해 적응유연성, 생활스트레스, 자기효능감, 사회적 지지, 긍정정서, 스트레스 대처전략 측정도구를 사용하였으며 수집된 자료분석을 통해 대상자의 일반적 특성 및 그에 따른 적응유연성 차이, 각 변수의 수준 및 변수 간의 상관관계를 파악하였으며 다중회귀분석을 통해 적응유연성에 영향을 미치는 요인을 분석하였다. 대상자의 적응유연성은 평균 3.54점으로 측정되었으며 학업성적과 전공에 대한 만족도에 따라 유의한 차이가 있었다. 적응유연성은 생활스트레스, 자기효능감, 사회적 지지, 긍정정서, 적극적 스트레스 대처전략, 소극적 스트레스 대처전략과 유의한 상관관계가 있었다. 적응유연성에 영향을 주는 요인으로는 자기효능감(${\beta}=.39$, p<.001), 적극적 스트레스 대처전략(${\beta}=.26$, p<.001), 사회적 지지(${\beta}=.16$, p<.001) 순으로 나타났으며 이들 요인들의 적응유연성에 대한 전체 설명력은 51.0%였다. 간호학생이 학업 및 취업과 관련된 스트레스 상황에서 효과적으로 대처하고 회복하여 적응할 수 있도록 적응유연성을 증진시킬 필요가 있다. 특히, 본 연구결과를 토대로 자기효능감, 적극적 스트레스 대처전략, 사회적 지지와 같이 간호학생의 적응유연성에 중요하게 영향을 미치는 보호요인들을 촉진하여 간호학생의 적응유연성을 증진시킬 수 있는 프로그램의 개발과 효과검증이 이루어져야 할 것이다.

• 대기
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• 제31권5호
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• pp.593-606
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• 2021

The Korea Meteorological Administration/National Institute of Meteorological Sciences (KMA/NIMS) has monitored atmospheric CO₂ at Anmyeondo (AMY) World Meteorological Organization (WMO) Global Atmosphere Watch Programme (GAW) regional station since 1999, and expanded its observations at Jeju Gosan Suwolbong station (JGS) in the South and at Ulleungdo-Dokdo stations in the East (ULD and DOK) since 2012. Due to a recent WMO CO₂ scale update and a new filter (NIMS) to select baseline levels at each station, the 22 years of CO₂ data are recalculated. After correction for the new CO₂ scale, we confirmed that those corrected records are reasonable within the compatibility goal (±0.1 ppm of CO₂) between KMA/NIMS and National Oceanic and Atmosphereic Administration (NOAA) flask-air measurements with the new scale. With the new NIMS filter, CO₂ baseline levels are now more representative of the large-scale background compared to previous values, which contained large CO₂ enhancements. Atmospheric CO₂ observed in South Korea is 4 to 8 ppm greater than the global average while the amplitude of seasonal variation is similar (10~13 ppm) to the amplitude averaged over a comparable latitude zone (30°N-60°N). Variations in CO₂ growth rate are also similar, increasing and decreasing similar to global values, as it reflects the net balance between terrestrial respiration and photosynthesis. In 2020, atmospheric CO₂ continued increasing despite the COVID-19 pandemic. Even though fossil emission was reduced (around -7% globally), we still emitted large amounts of anthropogenic CO₂. Overall, since CO₂ has large natural variations and its source was derived from not only fossil fuel but also biomass burning, the small fossil emission reduction could not affect the atmospheric level directly.

• 대한토목학회논문집
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• 제32권6C호
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• pp.267-274
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• 2012

오염물질의 거동은 간극 배열과 연결망에 의해 결정되지만 흙에서 오염물질의 이동을 계산하는 전통적인 접근은 거시 스케일에서 적용된다. 나비에-스토크스 방정식을 풀기 위해 소요되는 컴퓨팅 비용 때문에 간극 스케일에서 이동과 결과를 관찰하기 쉽지 않다. 본 논문에서는 단일상 다성분 유체유동에서 국부적인 유속과 밀도를 효과적으로 평가할 수 있는 격자 볼츠만 방법에 대해 설명한다. 오염물질의 시공간적 거동은 유체 유동의 이송에 의해 명시적으로 결정된다. 두 가지 형태의 이상화된 간극은 유체의 경로를 제공한다. 또한 오염물질 이동, 유속장, 오염물질의 평균 농도는 정상상태의 유동에서 계산된다. 굴곡비와 같은 간극 형상은 오염물질 거동의 영향을 준다. 이는 흙이나 암반의 불연속면에서 동일한 간극률를 가져도 간극의 배열과 형상의 중요함을 강조한다.

• Wind and Structures
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• 제13권1호
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• pp.21-36
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• 2010

A new full scale testing apparatus generically named the Wall of Wind (WoW) has been built by the researchers at the International Hurricane Research Center (IHRC) at Florida International University (FIU). WoW is capable of testing single story building models subjected up to category 3 hurricane wind speeds. Depending on the relative model and WoW wind field sizes, testing may entail blockage issues. In addition, the proximity of the test building to the wind simulator may also affect the aerodynamic data. This study focuses on the Computational Fluid Dynamics (CFD) assessment of the effects on the quality of the aerodynamic data of (i) blockage due to model buildings of various sizes and (ii) wind simulator proximity for various distances between the wind simulator and the test building. The test buildings were assumed to have simple parallelepiped shapes. The computer simulations were performed under both finite WoW wind-field conditions and in an extended Atmospheric Boundary Layer (ABL) wind flow. Mean pressure coefficients for the roof and the windward and leeward walls served as measures of the blockage and wind simulator proximity effects. The study uses the commercial software FLUENT with Reynolds Averaged Navier Stokes equations and a Renormalization Group (RNG) k-${\varepsilon}$ turbulence model. The results indicated that for larger size test specimens (i.e. for cases where the height of test specimen is larger than one third of the wind field height) blockage correction may become necessary. The test specimen should also be placed at a distance greater than twice the height of the test specimen from the fans to reduce proximity effect.

• 여성건강간호학회지
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• 제26권1호
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• pp.49-60
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• 2020

Purpose: Infertile women experience various physical, psychological, and relational problems that affect their infertility-related quality of life (QoL). This study investigated infertile women's infertility-related QoL with the goal of identifying how it is influenced by fatigue, depression, and marital intimacy. Methods: A sample of 140 infertile women was surveyed in a cross-sectional study. Data were collected from February to April 2018 using self-report structured questionnaires at three infertility clinics located in Jeonju, Korea. Data were analyzed using the independent t-test, analysis of variance, Pearson correlation coefficients, and stepwise multiple regression analysis in SPSS for Windows version 25.0. The subjects agreed to complete a face-to-face interview, including administration of the Fatigue Severity Scale, Depression Anxiety Stress Scale-21, Marital Intimacy Scale, and the Fertility Quality of Life tool. Results: The mean age of the participants was 35.6±4.3 years. Infertility-related QoL was negatively correlated with fatigue (r=-.42, p<.001) and depression (r=-.56, p<.001), and positively correlated with marital intimacy (r=.30, p<.001). Multiple regression analysis showed that depression (β=-0.44, p<.001), fatigue (β=-0.27, p<.001), and husband's attitude (β=-0.19, p=.007) had significant effects on the QoL of infertile women, accounting for 40.5% of the variance in infertility-related QoL. Conclusion: The study provides insights into how infertile women's infertility-related QoL was influenced by depression, fatigue, and their husbands' attitudes regarding infertility treatment. To improve infertile women's infertility-related QoL, healthcare providers should consider developing strategies to decrease depression and fatigue in infertile women and to address their husbands' attitudes.

• 대한본초학회지
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• 제30권5호
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• pp.1-6
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• 2015

Objectives : Vertigo is a sensation of spinning while stationary. It is commonly associated with nausea or vomiting, unsteadiness (postural instability), falls. It can affect a person's thoughts and life style. Recurrent episodes in those with vertigo are common and frequently impair the quality of life. The purpose of this study was to report the clinical effects of herbal medicine on vertigo.Methods : We employed oriental medical treatments; herbal-medication (Banhabaekchulcheonma-tang gamibang), acupuncture and moxibustion. At the same time, the blood cupping therapy in the neck area was applied. We treated the patients two or three times a week with oriental therapy methods. They took medicine three times a day after a meal. During taking medicine, we let the patients avoid fatty food, flour based food, and alcohol. We determined the course of treatment with visual analogue scale (VAS). We let them respond to a VAS item between 0 and 10 point continuously. The symptoms that we evaluated were vertigo, headache, chest discomfort, nausea and vomiting.Results : After taking treatment - acupuncture and moxibustion during some period and taking herbal-medicine, the VAS scale was gradually getting decreased. Generally the symptom of vomitting and nausea was eased at first, and then the symptom of chest discomfort, headache, vertigo was relieved.Conclusions : Banhabaekchulcheonma-tang gamibang was effective in the treatment of vertigo and its related symptoms, headache, chest discomfort, nausea and vomiting.

• 동의생리병리학회지
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• 제27권1호
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• pp.130-135
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• 2013

We investigated the lung function change and quality of life in smokers after taking herbal medicine. The patients were divided into two groups(smoking and non-smoking). We measured lung function change by VRI and quality of life by BDI and Fatigue Scale Score before and after herbal medicine intake. And we examined changes of nicotine dependence, total smoking amount, tobacco flavor in smoking group. The VRI energy bar could not represent the change of the lung function in smoking group and non-smoking group. And there was no change of lung function by VRI in two group patients before and after herb medication. But after taking herb medicine, the patients who have abnormal sound in VRI were improved. The herbal medicine does not affect to the amount of smoking, tobacco flavor, nicotine dependence in Smoking patients. Smoking group were higher than non-smokers in BDI score and Fatigue Scale score. Smoking group were more improved than the non-smokers in BDI and Fatigue Scale Score after taking herbal medicine.

• 대한물리의학회지
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• 제11권2호
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• pp.1-11
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• 2016

PURPOSE: This study was conducted to assess the effects of local vibration on ankle plantarflexion spasticity and clonus in patients with spinal cord injury. METHODS: The subjects were 14 inpatients with complete or incomplete spinal cord injury (SCI) whose scores were higher than 1 on the Modified Ashworth Scale (MAS) and Spinal Cord Assessment Tool for Spastic Reflexes (SCATS) scale of paraplegia. A randomized single-blind cross-over design was used. Vibration treatment involved a single application of vibration for 10 min in the sitting position, and placebo treatment involved the patient remaining in the sitting position for 10 min. One day after treatment, vibration and placebo treatments were crossed over. Spasticity was measured by using the MAS, and resistance force, by using a hand-held dynamometer; clonus was gauged by using the SCATS scale and clonus burst duration. Additionally, the burst maximal frequency and voluntary ankle dorsiflexion angle of the triceps surae were measured. RESULTS: The application of vibration treatment in the sitting position significantly reduced the MAS scores and resistance force, but significantly increased the dorsiflexion angle of the ankle joint (p<0.05). Furthermore, the vibration treatment diminished the clonus burst duration and SCATS score significantly (p<0.05). Although it reduced the burst maximal frequency of the lateral gastrocnemius and medial soleus, this was significant only for the lateral gastrocnemius. The placebo treatment did not significantly affect any of the test parameters. CONCLUSION: Vibration treatment in the sitting position was effective in cases of spasticity and clonus caused by SCI.