• Radiation Oncology Journal
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• v.12 no.2
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• pp.243-252
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• 1994

The use of high dose rate remote afterloading system for the treatment of intraluminal lesions necessitates the need for a more accurate of dose distributions around the high intensity brachytherapy sources, doses are often prescribed to a distance of few centimeters from the linear source, and in this range the dose distribution is very difficult to assess. Accurated and optimized dose calculation with stable numerical algorithms by PC level computer was required to treatment intraluminal lesions by high dose rate brachytherapy system. The exposure rate from sources was calculated with Sievert integral and dose rate in tissue was calculated with Meisberger equation, An algorithm for generating a treatment plan with optimized dose distribution was developed for high dose rate intraluminal radiotherapy. The treatment volume becomes the locus of the constrained target surface points that is the specified radial distance from the source dwelling positions. The treatment target volume may be alternately outlined on an x-ray film of the implant dummy sources. The routine used a linear programming formulism to compute which dwell time at each position to irradiate the constrained dose rate at the target surface points while minimizing the total volume integrated dose to the patient. The exposure rate and the dose distribution to be confirmed the result of calculation with algorithm were measured with film dosimetry, TLD and small size ion chambers.

• Women's Health Nursing
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• v.8 no.4
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• pp.529-537
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• 2002

The purpose of this study was to investigate the prevalence, relative factor and the effects that overactive bladder or urinary incontinence have on women's lives. Data was gathered through an internet survey. The subjects included 3,372 women ranging from 20 years old to 49 years of age. The questionnaire included general characteristics (age, parity, family history, and history of UTI), overactive bladder symptoms (urgency, frequency, nocturia, urgent incontinence), urinary incontinence, discomfort in ADL and sexual activity. The data was analyzed by the SPSS/PC+ program using frequency, $x^2$ test, and multivariate logistic regression. The results were as follows; 1. The prevalence was 12.7 % in overactive bladder and 21.0% in urinary incontinence. 2. 19.2% of the subject have urge incontinence, 5% of them have coped with the use of a pad. 3. The significant factors to overactive bladder were age($x^2$=6.6, p<0.05), history of urinary tract infection ($x^2$=50.8, p<0.01) and family history ($x^2$=26.1, p<0.01). The significant factors to urinary incontinence were age ($x^2$=6.2, p<0.05), occupation ($x^2$=11.0, p<0.05), history of urinary tract infection($x^2$=20.2, p<0.01), parity ($x^2$=8.6, p<0.01), and family history ($x^2$=4.9, p<0.05). 4. Overactive bladder impacts on individual daily life was 5.0 times, urinary incontinence was 2.9 times higher than in non-symptoms. Also, overactive bladder impacts on their sexual activity disturbance was 4.3 times, urinary incontinence has 3.9 times higher than in non-symptoms. In conclusion, overactive bladder symptoms and urinary incontinence were health problems that disturbed women's lives. Also the most problem among overactive bladder may be urgency in Korean. Intervention based on these results needs to be provided for these women.

• Macromolecular Research
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• v.17 no.12
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• pp.963-968
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• 2009

Liquid crystal (LC; E7 and/or ML-0249)-embedded, poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-co-HFP)-based, polymer electrolytes were prepared for use in dye-sensitized solar cells (DSSCs). The electrolytes contained 1-methyl-3-propylimidazolium iodide (PMII), tetrabutylammonium iodide (TBAI), and iodine ($I_2$), which participate in the $I_3^-/I^-$ redox couple. The incorporation of photochemically stable PVdF-co-HFP in the DSSCs created a stable polymer electrolyte that resisted leakage and volatilization. DSSCs, with liquid crystal(LC)-embedded PVdF-co-HFP-based polymer electrolytes between the amphiphilic ruthenium dye N719 absorbed to the nanocrystalline $TiO_2$ photoanode and the Pt counter electrode, were fabricated. These DSSCs displayed enhanced redox couple reduction and reduced charge recombination in comparison to that fabricated from the conventional PVdF-co-HFP-based polymer electrolyte. The behavior of the polymer electrolyte was improved by the addition of optimized amounts of plasticizers, such as ethylene carbonate (EC) and propylene carbonate (PC). The significantly increased short-circuit current density ($J_{sc}$, $14.60\;mA/cm^2$) and open-circuit voltage ($V_{oc}$, 0.68 V) of these DSSCs led to a high power conversion efficiency (PCE) of 6.42% and a fill factor of 0.65 under a standard light intensity of $100\;mW/cm^2$ irradiation of AM 1.5 sunlight. A DSSC fabricated by using E7-embedded PVdF-co-HFP-based polymer electrolyte exhibited a maximum incident photon-to-current conversion efficiency (IPCE) of 50%.

• The Journal of Korean Society for School & Community Health Education
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• v.9 no.2
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• pp.65-80
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• 2008

Objectives: To identify the relationship between the internet addition of elementary school students, and their health behavior and VDT syndrome, and thereby to detect the impact of internet addiction on the health behavior of elementary school students, to get the basic information necessary to develop a prevention program for internet addiction and to plan for VDT syndrome prevention program. Methods: We conducted this study during the period from jun 27, 2007 through July 8, 2007. The subjects of this study were 416 children whose grades were in 4th through 6th grades of elementary schools located in the city A in Kyung Pook Providence. Data were obtained from self-rating questionnaires. The questionnaires were composed of Korean Internet Addiction Self-examination on Internet Use Patterns (K-scale), Health Behavior Profile, VDT Syndrome, and general characteristics. We used t-test, AVOVA with Ducan method for Post-hoc comparison in means comparison between groups, $X^2$-test for frequency analysis and Pearson's correlation coefficient. We used SPSS/PC(12.0 ver) program and the LISREL 8.53 Win program for covariance structural analysis. Results: Major results were as follows. 1. The internet addiction propensity distribution based on the distribution of scores were investigated according to the self diagnosis scale on internet addiction. 6.5% of them were high risk user group, 14.4% were potential risk users and 79.1% of them were common user groups. 2. Internet addictions by sex, internet use duration, frequency (days/week), time(hours/day), purpose, position, brightness of internet, attitude of parents and frequency of conversation of family members were statistically significant(p<0.01). 3. There was a statistically significant difference in VDT syndrome according to internet addiction groups(p<0.001) besides ocular symptoms, dry mouth and GI troubles. 4. The health behavior score was the lowest in high risk user group(p<0.001). There were significant differences between internet addiction groups in personal hygiene and habits of daily living(p<.002), the prevention of accidents(p<.002), the practice concerned with the prevention of infectious disease(p=.002), and mental health(p<.001). 5. There was also a significant negative correlation between internal addiction and health profile(r=-0.365, p<0.01) and a significant positive correlation between internal addiction and VDT syndrome(r=0.331, p<0.01). 6. As the result of structural model analysis, internet use time(/day), days of internet use(/1week), conversation frequency among family members, degree of brightness of internet use had significant direct effects on internet addiction. Conclusions: The results will help the development of an effective intervention program for the prevention and treatment of internal addiction by clarifying the effect of the internal addiction upon elementary school students' VDT syndrome and health behavior.

• Korean Parent-Child Health Journal
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• v.3 no.2
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• pp.25-40
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• 2000

The purpose of this study is to identify the sleep/activity patterns of neonates and to provide a baseline data in developing an effective maternal-child nursing intervention strategies. The subjects of this study were 57 normal newborn babies from birth to 4 weeks of age, who visited the Postpartum Care Center and two General Hospitals and One Local clinic in Taejon. The data were collected from October 28th, 1999 to April 28th, 2000. The instrument used in this study was NCASA developed by Barnard and validated by the Academic Society of Parent-Child Health. The data were analyzed with the SPSS PC+ 7.5 for window program using means, standard deviation, one-way ANOVA. The results of this study were as follows: 1. The mean amount of daytime sleep was 7.45 hours, nighttime sleep was 4.27 hours, and the total daily sleep was 11.72 hours. The mean amount of longest sleep period was 4.32 hours. The mean regularity of daytime sleep was 35.55%, the nighttime sleep was 44.82%, and the total daily sleep was 39.02%. The mean frequency of nighttime awakenings was 2.44 times. 2. The mean amount of daytime awake periods was 8.54 hours, the nighttime awake periods was 3.72 hours, and the daily total awake periods was 12.27 hours. The mean amount of the longest awake period was 3.98 hours. 3. The mean frequency of daytime feeding was 5.18 times, the nighttime feeding was 2.50 times, and the total daily feeding was 7.49. The mean of regularity of total daily feeding was 61.34%. 4. According to an analysis of sleep patterns based on newborn's age, there were some statistically significant differences noted in the following factors ; amount of nighttime sleep (F=7.65, p=.002), longest sleep period(F=5.84, P=.006). 5. According to an analysis of activity patterns based on newborn's age, there were some statistically significant differences noted in the following factors ; amount of nighttime activity (F=7.64, P=.002), longest activity period (F=4.34, P=.020), frequency of nighttime feeding(F=3.89, p=.029), frequency of total daily feeding(F=3.76, P=.033), and regularity of daily feeding(F=4.66, P=.016). In conclusion, the newborn baby slept more during the daytime than nighttime and more active during the daytime. And there were some irregular sleep/activity pattern noted during 1 to 2 weeks of newborn baby. The results of this study will contribute to maternal-child health nursing practice and nursing research, and provide an information to parents about what to expect their newborn baby.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.4 no.1
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• pp.73-85
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• 1997

The purpose of this study was to find out the prevalence of the urinary incontinence and it's relating factors in women. The target population is 327 community dwelling women in the age of 30-70 years old at 6 cities in Korea. The data were collected from August, 1996 to December. 1996 with interview using structured questionaire composing of items of general characteristics, obstetric characteristics, disease characteristics, situation of experiencing urinary incontinence, discomfort due to urinary incontinence, and depression. The data were analysed with $SPSS/PC^+$ program, T-test, $x^2$ test, and ANOVA test. The results obtained from this study were as follows : 1) The prevalence of urinary incontinence in women is 37.7%(130/327). 2) The mean duration of experiencing the urinary incontinence was 75.9 months and the 60% of the respondents experienced a few frequency of urinary incontinence and the most common amount of urinary incontinence(91.5%) was somewhat small expressed as 'wetting their clothes'. 3) The common factors related to the urinary incontinence were coughing, sneezing, laughing aloudly, and the activities of need for hurry. 4) The most common situations of discomforts associated with urinary incontinence were having long journey, exercise, playing, and social meeting. 5) The incidence of urinary incontinence was significantly higher in woman who had more children, older age of last delivery, more vaginal delivaries, and less c-section. 6) The incidence of urinary incontinence was not affected with the disease characteristics of the respondents, however it was higher when the women had the physical problems of constipation, abdominal laparatomy and episode of urinary catheterization than who had not. 7) The most common symptom of urinary incontinence was the frequent urine(43.1%), and the next was the urgent urine(12.3), delayed urine(9.2%). 8) 90.7% of the epsodic urinary incontinence were not treated at al, however, they wanted to try the herb medicine(41.5%), Kegel exercise(27.7%), and biofeedback(10.0%). 9) The level of Depression in the group of urinary incontinence was higher than that of non incontinence group significantly. In conclusion, as urinary incontinence in women proved severe health problem, health care providers need to develop and provide nursing intervention of urinary incontinence such as pelvic muscle exercise with bio-feedback and psychological care.

• Korean Journal of Optics and Photonics
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• v.12 no.3
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• pp.240-249
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• 2001

A high speed ultra-compact lens with a diffractive optical element (DOE) is designed, which can be applied to mobile communication devices such as IMT2000, PDA, notebook computer, etc. The designed hybrid lens has sufficiently high performance of less than f/2.2, compact size of 3.3 mm (1st surf. to image), and wide field angle of more than 30 deg. compared with the specifications of a single lens. By proper choice of the aspheric and DOE surface which has very large negative dispersion, we can correct chromatic and high order aberrations through the optimization technique. From Seidel third order aberration theory and Sweatt modeling, the initial data and surface configurations, that is, the combination condition of the DOE and the aspherical surface are obtained. However, due to the consideration of diffraction efficiency of a DOE, we can choose only four cases as the optimization input, and present the best solution after evaluating and comparing those four cases. On the other hand, we also report dramatic improvement in optical performance by inserting another refractive lens (so-called, field flattener), that keeps the refractive power of an original DOE lens and makes the petzval sum zero in the original DOE lens system. ystem.

• The Korean Journal of Emergency Medical Services
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• v.15 no.2
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• pp.85-99
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• 2011

Purpose: The purpose of this study is to examine the EMT student's attitude to the disabled and provide the basic materials of educational program to make them have right awareness and attitude of the disabled. Methods: The subjects of this study were 348 of 339 emergency medical students at three departments of emergency medical in G metropolitan city who gave consent to take part in the research and the data were collected for 10 days from Mar. 2 to 11, 2011. It used DFS (Disability Factor Scale) developed by Siller (1967) and revised and complemented by Lee Jong Nam (1997) after validity and reliability test. Data collected were analyzed with technical statistics, t-test and ANOVA using SPSS/ PC 12.0 Results: The results of this study are summarized as follows. 1. On the question that there are the disabled around the subjects, 74.7% of the respondents answered 'none', and on the question of having concerns on the disabled problems, 61.5% of the respondents answered 'they have no concerns on them'. In addition, on the question of effective methods for improving a negative awareness of the disabled, many of subjects responded the governmental support must be a priority. 2. The subjects' attitude to the disabled scored average 3.13 and they have positive attitude to the disabled. In six sub-areas of attitude to the disabled, tension in contact with the disabled scored 2.90, inferred emotional disorder 2.79, unconditional repulsion 2.78, refusal to friendly relation 2.74, limitation of other functions undamaged 2.66 and distorted identification 2.65. 3. Variable showing a significant difference in the results of analysis according to general characteristics of subjects was age and those who are over '21' showed more positive attitude to the disabled than those who are below '20'. 4. In the results of analysis according to the subjects' disability related characteristics, those who have the disabled in their friends or family and have concerns on the disabled problems have a positive attitude to the disabled. Promotion and education through mass communication for changing the awareness of the disabled into a positive attitude will be most effective. Conclusion: Consequently, positive attitude of EMT student's to the disabled can be fostered by continuous contact with the disabled and their participation in voluntary services in the dimension of individual or school will be important and also the various practical methods such as enlightenment movement and supply of right information through mass communication should be sought.

• Journal of Korean Public Health Nursing
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• v.12 no.2
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• pp.185-200
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• 1998

It has been contributed to public health that the hospital has multiplied in the aspect of number and has been a large size with development of modern medical science, meanwhile the problem of hospital infection is coming out seriously. Respiratory hospital infection among hospital infections develops, very commonly from patients having taken the operation of intubation or tracheostomy, which results from a big factor that the infection developed from medical appliances used for respiration aids, contamination of solution and infection of medical staff. This study is separated into four steps-the time to use normal saline and distillation water for storaging catheter which are the cause of the infection of solution to store distillation water and catheter, not to say the catheter used when the patient who should get tracheostomy operation takes suction. The purpose of this study is to offer the basic data which are needed to check contamination degree as time goes by and nurse intervention and grope for a new nursing intervention. The target of this study is hospitalized 1D an intensive care unit having 700 sickbeds which is located in IKSAN city and it targeted patients before 7 days passed after an operaion of a tracheostormy. Materials collected were analyzed by SPSS PC+ figures program. The result of this study were as follows ; 1. The gradual contamination levels of the normal saline used In suction are showing that colony increase in proportion to the length of time. 2. while colony increases in normal saline with the lapse of time. distillation water mixed with 5cc of potadine did not show any sign of the formation of colony from its preparation until it was used for 8 hours. 3. Such variables as the period of intubation insertion. the length of hospitalization in I.C.U. the age and the level of contamination of normal saline have no inter-relationship. Therefore. as the length of normal saline used In suction. the contamination level increases with the excelleration of the contamination speed. 4. Regarding the number of suction and the contamination level of the normal saline. We can observe correlation contamination level in the 3 step of suction(mean value:13.4) and the saline which was used for one hours(r=0.702. P=0.00l). four hours(r=0.694. P=0.00l). eight hours(r=0.488. P=0.029). Further we can observe contamination in the 4 step of suction (mean value: 17 .8) well as saline used for eight hours; [for one hours (r=0.64l. P=0.002). four hours (r=0.670. P=0.00l). eight hours (r=0.57 4. P=0.008)]. Thesedays clinics use normal saline by changing it. three times a day. however. the timing of saline change and the current suction methoed should be changed given the one hour used normal saline contamination number 79.850. Regarding the number of suction and the contamination lend of the normal saline.

• Journal of Korean Public Health Nursing
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• v.12 no.2
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• pp.122-135
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• 1998

This study was carried out to understand the nursing needs of postpartum women during the postpartum period. The goal of study was to obtain data needed to develop maternal education programs and to improve the nursing quality for postpartum women. A cross-sectional survey design was employed in this study. The subjects were 101 postpartum women who had delivery at 2 general hospitals in Chung-Buk. Korea. Data were collected from Sep. 29 to Nov. 28. 1997 by means of a structured questionnaire. The instrument used for this study was the one which was consisted of revised Maternal Concerns Questionnaire (MCQ) developed by Bull (1979). The data were analyzed through the SPSS/PC+ program by use of frequency, t-test and ANOVA. The results of the study were as follows; 1) The mean score of concerns about 'self' was 2.98 for primipara and 2.80 for multipara but was not statistically significant difference. Among the items of concerns 'for self', 'Being good mothers' was the highest (primipara 3.93. multipara 3.75). 2) The mean score of concerns about 'baby' was 3.64 for primipara and 3.53 for multipara but was not statistically significant difference. Among the items of concerns 'for baby', 'Normal growth and development' was the highest (primipara 3.91. multipara 3.90). 3) The mean score of concerns about 'husband' was 3.33 for primipara and 3.06 for multipara and was statistically significant difference (t=2.11. p=0.03). Among the items of concerns 'for husband', 'Husband being a good father' was the highest (primipara 3.87, multipara 3.77). 4) The mean score of concerns about 'family' was 2.65 for primipara and 2.80 for multipara but was not statistically significant. Among the items of concerns 'for family', 'Change in the family's lifestyle' was the highest(primipara 3.01, multipara 2.93, t=-1.99, p=0.04). 5) The mean score of concerns about 'community' was 2.48 for primipara and 2.42 for multipara but was not statistically significant. Among the items of concerns 'for community'. 'Getting to health care facilities' was the highest (primipara 2.48, multipara 2.42). 6) On considering the relationship between the postpartum women's nursing needs and their general characteristics, 'regularly antenatal care' was statistically significant (t=2.29. p=0.02). In conclusion, recognition of maternal concerns can be used by nurses to identify nursing diagnoses and to develop care plans that reflect the patient's priorities.