• Korean Journal of Psychosomatic Medicine
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• v.11 no.2
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• pp.196-204
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• 2003

Objectives: It is known that sedative hypnotics would make cross tolerance with alcohol and deteriorate quality of sleep in alcoholics. Light therapy is effective non-pharmacological intervention for sleep disturbance in circadian phase disorders, jet-lag, shift-work and age-related sleep disorders. Authors would investigate the effects of morning light therapy on sleep of patients with alcohol dependence during recovery state without withdrawal symptoms. Methods: 13 patients with alcohol dependence who have not any alcohol withdrawal symptom were recruited. Light therapy during 1 hour in the morning had been administered by 2500 Lux light box through serial 3 days. Sleep state of subjects were assessed by sleep log and the subjective satisfaction at sleep was by 100 mm visual analogue scale. Sleepiness, depressive mood, anxiety were evaluated by 100mm visual analogue scale at 8 AM, 2 PM and 8 PM. For assessment of performance ability that would be associated with sleepiness and vigilance, trail making test A, B and digit symbol substitution test were performed by two times on base line and 4th day. Univariate repeated-measures ANOVAs were performed for each measures except performance tests which were analysed by paired t-test. Results: Sleep latency and sleep efficiency were significantly improved with light therapy and satisfaction at sleep was. There was no significant difference in sleepiness at 2 PM with light therapy but sleepiness at 8 AM significantly decreased and at 8 PM increased. The time to complete Trail making test and digit symbol substitution test were significantly shortened at 4th day compared with baseline. Fatigue at 8 AM were not significantly changed with light therapy but at 2 PM and 8 PM significantly decreased. Depressive mood and anxiety were not significantly changed with light therapy. Conclusion: Although this study had some limitations, it showed that light therapy would be effective modality on sleep disturbance of patients with alcohol dependence who have recovered from alcohol withdrawal symptoms. It is proposed that short term light therapy could be used clinically for alcoholics with insomnia. In the future, long term controlled studies using more objective tools for sleep are required to further investigate the effect of light therapy in alcoholics.

• Journal of Korean Academy of Nursing
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• v.45 no.4
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• pp.604-612
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• 2015

Purpose: The purpose of this study was to investigate the levels of physical symptoms, anxiety, depression, and quality of life (QOL) during chemotherapy for colorectal cancer patients in South Korea and to identify factors influencing their QOL. Methods: Data were collected from 144 colorectal cancer patients receiving chemotherapy during 2012 at one general hospital located in Seoul. Physical symptoms were measured by the M. D. Anderson Symptom Inventory-Gastrointestinal Cancer Module, and anxiety and depression were measured by the Hospital Anxiety Depression Scale. QOL was measured by the Functional Assessment of Cancer Therapy-Colorectal. Data were analyzed using descriptive statistics, t-test, one-way ANOVA, $Scheff{\acute{e}}$ post hoc test, Pearson correlation and stepwise multiple regression. Results: Mean age of the participants was 56.6 and most of them were not employed. In terms of cancer stage, 38.2% were in stage 3, followed by stage 4 (34.7%). The most frequent symptom was lack of appetite, followed by sleep disturbance and fatigue. The mean score for anxiety was 5.40 with a prevalence of 23% and that of depression 8.85 with a prevalence of 64.6%. The mean score for quality of life was 81.93 out of 136 and 75.3% of the variance in QOL was explained by depression, symptoms, anxiety, treatment place, and occupational status. Depression was the strongest predictive factor. Conclusion: Oncology professionals need to pay special attention to relieving depression as well as physical symptoms to improve QOL during chemotherapy for colorectal cancer patients.

• Structural Engineering and Mechanics
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• v.63 no.6
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• pp.809-824
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• 2017

The accurate evaluation of wind characteristics and wind-induced structural responses during a typhoon is of significant importance for bridge design and safety assessment. This paper presents an expectation maximization (EM) algorithm-based angular-linear approach for probabilistic modeling of field-measured wind characteristics. The proposed method has been applied to model the wind speed and direction data during typhoons recorded by the structural health monitoring (SHM) system instrumented on the arch Jiubao Bridge located in Hangzhou, China. In the summer of 2015, three typhoons, i.e., Typhoon Chan-hom, Typhoon Soudelor and Typhoon Goni, made landfall in the east of China and then struck the Jiubao Bridge. By analyzing the wind monitoring data such as the wind speed and direction measured by three anemometers during typhoons, the wind characteristics during typhoons are derived, including the average wind speed and direction, turbulence intensity, gust factor, turbulence integral scale, and power spectral density (PSD). An EM algorithm-based angular-linear modeling approach is proposed for modeling the joint distribution of the wind speed and direction. For the marginal distribution of the wind speed, the finite mixture of two-parameter Weibull distribution is employed, and the finite mixture of von Mises distribution is used to represent the wind direction. The parameters of each distribution model are estimated by use of the EM algorithm, and the optimal model is determined by the values of $R^2$ statistic and the Akaike's information criterion (AIC). The results indicate that the stochastic properties of the wind field around the bridge site during typhoons are effectively characterized by the proposed EM algorithm-based angular-linear modeling approach. The formulated joint distribution of the wind speed and direction can serve as a solid foundation for the purpose of accurately evaluating the typhoon-induced fatigue damage of long-span bridges.

• Korean Journal of Adult Nursing
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• v.13 no.3
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• pp.420-430
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• 2001

This study was designed to verify the effect of aromatherapy on menstrual cramps and dysmenorrhea by a quasi experiment (nonequivalent control group pretest-posttest design), from March to October, 2000. The subjects of this experiment consisted of 45 college women with menstrual cramps and dysmenorrhea. They were randomized by 25 for the experimental group and 20 for the control group. Their mean age was 20.6 years, mean menstrual period 28.7 days, mean menstrual cramps(VAS) 7.25, mean dysmenorrhea (Dysmenorrhea Scale) was 27.34. As treatment, aromatherapy was to give effleurrage of the abdomen with lavender, clary sage and rose as aroma oil, almond oil as carrier oil. For the control group, abdominal massage was given with only almond oil. Data collection included menstrual cramps, dysmenorrhea, the change of symptoms(low abdominal pain, lumbago, headache, nausea, fatigue, edema). Menstrual cramps, dysmenorrhea and general, menstrual characteristics of subjects were measured the first day of the pre menstrual period before treatment (pre-test), menstrual cramps, dysmenorrhea, the change of symptoms were measured the first and second day of post menstrual period after treatment (posttest). Data were analyzed by t-test, $\chi^2$- test, repeated measures ANOVA, Cronbach's ${\alpha}$ with SAS Program. The results of this study was as follows; 1. Menstrual cramps was significantly lower in the experimental group(p = .001). 2. Dysmenorrhea was significantly lower in the experimental group(p = .027). 3. Less women in the experimental group complained about the six symptoms than women in the control group after treatment on the first day of the menstrual period(p < 0.05, p < 0.01) In conclusion, these findings indicate that aromatherapy with lavender, clary sage, and rose could be effective to decrease menstrual cramps, and dysmenorrhea. So, aromatherapy could be applied to women suffering with menstrual cramps, dysmenorrhea periodically as an nursing intervention.

• Journal of Korean Academy of Nursing
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• v.26 no.4
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• pp.903-916
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• 1996

The purpose of this study was to discover practical health problems which hemodialysis clients experienced so as to present basic data for development of a health assessment tool. The research subjects were 70 clients receiving hemodialysis in Seoul and Inchon from Mar. 1996 to Sep. 1996. Data were collected by researcher's informal indepth interview and nurses' open ended question. Content analysis was applied to collect similar contents and common experiences in order to derivate concepts and categories for better understanding of hemodialysis clients' experiences. As a result, 9 categories derivated to identify the health problems of clients receiving hemodialysis were as follows : 1) They experienced 'the decreased digestive function' which contained the changed appetite, nausea, vomiting, constipation and diarrhea. 2) They experienced 'the decreased respiratory and circulatory function' which contained dyspnea, changed blood pressure, tingling sensation and the fear of aggrevated vascular condition. 3) They experienced 'the aggrevated oral condition' which contained dry mouth and destruction of teeth and their soft tissue. 4) They experienced 'the decreased sensory function' which contained visual disturbances, sensation difficulty, and hearing loss. 5) They experienced 'the aggrevated skin condition' which contained dark brown skin color, dry skin (and hyperpigmentatic freckle, seborrheric keratosis, scale), itching sense, and alopethia. 6) They experienced 'the decreased urinary reproductive function' which contained anuria or oliguria, dysmenorrhea, sterility and decreased libido. 7) They experienced 'the restricted activity' which contained decreased activity, muscle cramp and stiffness of joint. 8) They experienced 'the changed mental status' which contained memory disturbance, decreased cognition, disorientation, neurosis and psychosis. 9) They experienced 'the aggrevated general condition' which contained kyphosis, weight loss, fatigue, sleep disturbance, bleeding tendency, inflammation, generalized edema and foul oder of uremia.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.13 no.3
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• pp.447-456
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• 2006

Purpose: This study was done to examine symptom experiences and related factors in angina patients. Method: The participants were 92 patients admitted to C university hospital between October and December 2004. The tools used were a questionnaire on symptom experience related to angina developed by Gensini(Coronary Angiographic Gensini Score). Global Assessment of Recent Stress Scale and a tool measuring performance of health behavior. Results: The mean score for symptom experience was relatively low (M=27.65, SD=18.44) as was the score for coronary severity (Gensini score) was 16.30 point (SD=18.04). The mean score for perceived stress was moderate (M=30.16, SD=12.26). Compliance was relatively good in these patients with angina (M=61.55, SD=7.60). Analysis of the correlation of symptom experience showed a statistically significant positive relationship with perceived stress (r=.410, p=.000). There was significant negative relationship (r=-.251, p=.016) between symptom experience and compliance. In the regression analysis, symptom experience was found to be significantly influenced by stress ($R^2$=.168, p=.000), age ($R^2$=.057, p=.002), and economic status ($R^2$=.061, p=.007). These variables explained 26.2% of the variance in symptom experience. Conclusion: The results of this study provide evidence that symptoms of angina can present not only as chest pain itself but also with fatigue, shortness of breath, and sleep disturbance as the most common symptoms.

• International Journal of Highway Engineering
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• v.8 no.1 s.27
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• pp.139-152
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• 2006

Many experimental and numerical approaches have been developed to evaluate paving materials and to predict pavement response and distress. Micromechanical simulation modeling is a technology that can reduce the number of physical tests required in material formulation and design and that can provide more details, e.g., the internal stress and strain state, and energy evolution and dissipation in simulated specimens with realistic microstructural features. A clustered distinct element modeling (DEM) approach was implemented In the two-dimensional particle flow software package (PFC-2D) to study the complex behavior observed in asphalt mixture fracturing. The relationship between continuous and discontinuous material properties was defined based on the potential energy approach. The theoretical relationship was validated with the uniform axial compression and cantilever beam model using two-dimensional plane strain and plane stress models. A bilinear cohesive displacement-softening model was implemented as an intrinsic interface and applied for both homogeneous and heterogeneous fracture modeling in order to simulate behavior in the fracture process zone and to simulate crack propagation. A disk-shaped compact tension test (DC(T)) with heterogeneous microstructure was simulated and compared with the experimental fracture test results to study Mode I fracture. The realistic arbitrary crack propagation including crack deflection, microcracking, crack face sliding, crack branching, and crack tip blunting could be represented in the fracture models. This micromechanical modeling approach represents the early developmental stages towards a 'virtual asphalt laboratory,' where simulations of laboratory tests and eventually field response and distress predictions can be made to enhance our understanding of pavement distress mechanisms, such its thermal fracture, reflective cracking, and fatigue crack growth.

• Research in Community and Public Health Nursing
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• v.20 no.4
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• pp.465-473
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• 2009

Purpose: The purpose of the study was to investigate the relationships between worker's health belief in health promotion programs and their demographic, health, and health behavior characteristics. Methods: This study used survey data from 262 small- and large-scale workplaces. The study included 1149 male and female workers who completed the questionnaires. Results: The health belief score increased significantly with age and length of service. Male, married, shift-work, and white-collar workers showed a significantly higher health belief score than female, single, non-shift-work, and blue-collar ones. Workers with disease history, hypertension, or obesity had a significantly higher health belief score. Regular exercise was significantly correlated with the health belief score. When all the variables were included in the model, the health belief score was significantly higher in workers who were married, had a longer length of service, worked in the sales department, were diagnosed with hypertension, exercised regularly, and felt fatigue. Conclusion: The results showed that workplace intervention programs meet more the needs of workers who have a higher health belief score. In addition, given that healthier life style was related to a higher health belief score, further research is required to find how to change health behavior in workers.

• The Journal of Korean Medicine
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• v.26 no.2 s.62
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• pp.25-31
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• 2005

Objectives: This study was designed to assess traditional Korean medical therapy for urticaria and establish a clinical assessment guideline. Methods: Duration of symptoms, personal and family history of allergic diseases, serum IgE level, suspected causes and Provocation factors were investigated in 56 patients. Frequency of wheals, duration of wheals, number of wheals, itch severity and antihistamine counts on a 6-point (0-5) scale were assessed in 34 patients. The change of total scores and each criterion between baseline and follow up were analyzed using paired t-test (p<0.05). Results: 1. Acute urticaria within 6 weeks was $26.8\%$ and chronic urticaria over 6 weeks was $73.2\%$. The mean duration of symptoms was $19.2\pm38.8$ months. 2. $57.1\%$ of patients had a personal history of allergic diseases and $50\%$had a family history. $29.1\%$ had over 200 IU/mL serum IgE level. 3. The suspected causes were none $(39.3\%)$, foods $(32.1\%)$, drugs $(12.5\%)$, contact $(5.4\%)$ and maternity$(5.4\%)$. 4. The suspected provocation factors were foods $(41.1\%)$, none $(26.8\%)$, fatigue $(12.5\%)$, heat and sweating $(12.5\%)$, pressure $(10,7\%)$ and stress $(7.1\%)$. 5. The total scores between baseline and follow up of 34 patients were lowered from $15.38^{\circ}\;{\ae}3.75\;to\;8.82^{\circ}\;{\ae}5.21$, which was significant statistically (p=0.000). 6. Itch severity, frequency of wheals and number of wheals were the most significantly lowered of all criteria. Conclusions: Traditional Korean medical therapy was proven to be effective for urticaria, while itch severity, frequency of wheals and number of wheals should be assessed clinically with greater priority.

• Journal of Oriental Neuropsychiatry
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• v.27 no.4
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• pp.215-221
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• 2016

Objectives: The purpose of this study was to examine the relationship between pathological patterns and hyperventilation syndrome, using pathological pattern and Nijmegen questionnaires. Methods: 33 healthy adults were asked to complete the Cold-Heat-, Phlegm-, Yin deficiency, and Lao Juan (勞倦)-pattern questionnaires, the Chalder fatigue scale, and the Nijmegen questionnaire at Kyung Hee University Hospital. We performed Pearson correlation analyses between the pathological pattern questionnaires and the Nijmegen questionnaire. The questionnaires were composed of several factors. Therefore, each factor and Nijmegen questionnaire score were also analyzed. Results: All of the pattern questionnaire scores had a positive correlation with the Nijmegen questionnaire score. The phlegm pattern, in particular, and the LaoJuan (勞倦) questionnaire scores had high correlation coefficients. The coefficient for the phlegm pattern was 0.856 and the coefficient for the LaoJuan (勞倦) pattern questionnaire was 0.855. Conclusions: The results mean that the pathological pattern questionnaires could be one of the reference materials to evaluate hyperventilation syndrome. Furthermore, improvement of pathological patterns may be helpful for treating hyperventilation syndrome, together with conventional therapies including breathing training.