• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.4
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• pp.519-526
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• 2002

In this paper, a microstrip patch array antenna for a Doppler radar at 10.525GHz is desinged and fabricated. To be used for mobile radar system, the antenna is fabricated on a single layer laminate to resist a fire impact and is covered with the Teflon foam. To obtain the desired characteristics, the array antenna is designed 4$\times$8 array using a corporate 3-dB amplitude taper. Also, using square patch elements, the antenna can be converted to a circular polarized antenna later. The designed and fabricated array antenna has the reflection coefficient$({S_11})$ -53.498dB, the horizontal beam width of $10^{\circ}$, the vertical beam width of $18.8^{\circ}$, the gain of 21dBi, the bandwidth of 220MHz for VSWR<1.5 and a side lobe level of less than -17.5dB.

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.307.2-308
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• 2002

Acharan sulfate. a new glycosaminoglycan(GAG) isolated from the giant African snail Achatina fulica. was shown to have antitumor activity in vivo. To elucidate the mechanisms for the antitumor activity. we examined its impact on professional antigen presenting cells such as macrophages and dendritic cells (DCs). Acharan sulfate stimulated cytokine production (TNF-a and IL -1b). nitric oxide release. and morphological changes in a dose dependent manner on a macrophage cell Line Raw 264.7 cells. The differentiation-inducing activity of acharan sulfate was examined on immature DCs. Immature DCs were generated from mouse bone marrow (BM) cells by culturing with GM-CSF and IL-4, and then stimulated with acharan sulfate. The resultant DCs were then examined for funcional and phenotypic properties. It was found that acharan sulfate could induce functional maturation of immature DCs as determined by increased allogenic mixed lymphocyte reaction (MLR) and IL-12 production. Phenotypic. analysis for the expression of class II MHC molecules and major co-stimulatory molecules such as B7-1, B7-2 and CD40 also confirmed that acharan sulfate could induce maturation of immature DCs. These results suggest that that the antitumor activity of acharan sulfate is at least in part due to activation adn induction of differentiation of professinal antigen presenting cells. (omitted)

• Journal of Korean Society of Steel Construction
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• v.15 no.4 s.65
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• pp.379-388
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• 2003

The response of single story buildings and other case studies were investigated to observe trends and develop a better understanding of the impact of some design parameters on the seismic response of Concentrically Braced Frames (CBF). While many parameters are known to influence the behavior of braced frames, the focus of this study was mostly on quantifying energy dissipation in compression and its effectiveness on seismic performance. Based on dynamic analyses of single story braced frame and case studies, a bracing member designed with bigger R and larger KL/r was found to result in lower normalized cumulative energy ratio in both cases.

• Journal of Korean Academy of Nursing Administration
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• v.8 no.2
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• pp.295-308
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• 2002

Purpose: The purpose of this quasi-experimental research is to develop the CP for primary THR patients and verify its effectiveness. Method: The CP is designed for both patients and medical employees to meet the 14-day-long hospitalization with an expert and clinical validity test, and the standardized orders are also created. 21 eligible subjects for the control group(with common care plan) and 27 subjects for the experimental group(with CP service) were assigned. Data were collected from questionnaires to evaluate patients' satisfaction level of nursing care and CP, investigation of physical complications, inspection of LOS(length of hospital stay) and hospital charges from April 2000 to February 2001 at K-hospital in Daegu. The collected data were analyzed by using the SAS program. Results: After implementation of CP, there was a statistically significant reduction in mean length of stay. The hospital charges have no considerable difference between two groups. Frequency of physical complications is reduced considerably. The experimental group scored much higher than the control group on the satisfaction level toward nursing care. And in the analysis of CP satisfaction questionnaires, many subjects have high satisfaction in items of 'I see the treatment process and hospital life', 'I feel that I am participating in my treatment process with health care staff'. The analysis of variances which cause a prolonged LOS supports that it's necessary to strengthen an evaluation of pre-operative outpatients' condition and link the home nursing care system in discharge for more shortening of LOS. Conclusion: The above results show that CP can have a positive impact on satisfaction level of inpatients with primary THR and the hospital.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.18
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• pp.8321-8325
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• 2016

Background: The incidence of hydatidiform mole (HM) differs among regions but has declined significantly over time. In Thailand, the initiation of universal health coverage in 2002 has resulted in a change of medical services countrywide. However, impacts of these policies on gestational trophoblastic disease (GTD) cases in Thailand have not been reported. This study aimed to find the incidence of hydatidiform mole (HM) in King Chulalongkorn Memorial Hospital (KCMH) from 1994-2013, comparing before and after the implementation of the universal coverage health policy. Materials and Methods: All cases of GTD in KCMH from 1994-2013 were reviewed from medical records. The incidence of HM, patient characteristics, treatment and remission rates were compared over two study decades between 1994-2003 and 2004-2013. Results: Hydatidiform mole cases decreased from 204 cases in the first decade to 111 cases in the seond decade. Overall incidence of HM was 1.70 per 1,000 deliveries. The incidence of HM in the first and second decades were 1.70 and 1.71 per 1,000 deliveries, respectively (p=0.65, 95%CI 1.54-1.88). Referred cases of nonmolar gestational trophoblastic neoplasia (GTN) increased from 12 (4.4%) to 23 (14.4%, p<0.01). Vaginal bleeding was the most common presenting symptom which decreased from 89.4% to 79.6% (p=0.02). Asymptomatic HM patients increased from 4.8% to 10.2% (p=0.07). Rate of postmolar GTN was 26%. Conclusions: The number of HM cases in this study decreased over 2 decades but incidence was unchanged. Referral rates of malignant cases were more common after universal health coverage policy initiation. Classic clinical presentation was decreased significantly in the last decade.

• Journal of Korea Port Economic Association
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• v.24 no.1
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• pp.1-10
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• 2008

This paper analyses the dynamic causal relationship between vessel export and economic growth using annual data over the period from 1977 to 2006. Tests for ADF unit-roots, the dynamic vector using Johansen's multiple cointegration procedure, dynamic vector error correction model and impulse response function are presented. The findings of the Granger test suggest that vessel export Granger-causes economic growth in the short-run and economic growth Granger-causes exports in the short and long-run. The empirical results of impulse-response analysis show that the vessel export to a shock in real GDP responds positively and the real GDP responds positively to the shocks in vessel export. Also, the results indicate that the impact of vessel export shock on the real GDP is short-lived.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.21
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• pp.9471-9473
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• 2014

Background: Since 2002, from October till December of each year, the Lebanese Ministry of Public Health conducts a mammogram based breast cancer screening campaign in the whole country for women over 40 years of age. These mammograms are performed free of charge in governmental hospitals or for reduced fees in private hospitals. The aim of this study is to analyze the direct impact of this campaign on cancer detection and subsequent treatment. Materials and Methods: Radiologic records of women screened with a mammogram during the campaign period from October till December 2012 at Saint Joseph Hospital, Baouchrieh, Beirut, were reviewed. Results of mammograms were reported using the ACR score. Women with ACR score ${\geq}4$ were tracked and investigated. Results: 900 screening mammograms were performed; median age was 55.2 years (range:31-81 years). Some 826 (91.8%) had an ACR score of ${\leq}2$; 66 (7.3%) an ACR =3 and only 8 (0.89%) an ACR=4. Thus, less than 1% (8/900) of all screened women were considered at high risk and needed a close follow-up. Among these 8 women, 4 underwent surgery for an early breast cancer, one had synchronous metastatic breast cancer and two were lost to follow-up. Conclusions: To coclude, Among 900-screened women for BC, less than 1 % (8 out of 900) were at high risk of hiding a BC (ACR=4), half of them benefited from early therapy (4 women out of 900) and one was a false positive. Larger studies on national level should be accomplished to have a complete data on breast cancer screening in Lebanon. The results of these studies can affect the Lebanese health policy regarding BC.

• Korean Journal of Occupational Health Nursing
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• v.11 no.1
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• pp.44-51
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• 2002

Purpose: Surgical Site Infection(SSI) is the third most common cause of nosocomial infection, so that it results in serious socioeconomic impact such as extra hospitalization, mortality and health care cost. The aim of this study was to analyses the SSI that based on the degree of wound contamination and patient risk index after general surgery and to generate a reference data for the effective management and reducing SSI. Method: From July, 1999 to June, 2000, 1080 cases which presented with surgical site infection after general surgery at S hospital in chunchon city were included in this study. The data were collected by review of the medical records retrospectively. The collected data, in accordance with the test purpose, is analyzed by SPSS/PC+ program, using real numbers, percentage, $X^2$ test, Pearson's correlation and stepwise logistic regression. Result: The overall wound infection rate was 4.7%(51 cases out of 1,080). The infection rate of clean wounds was 1.4%. Surgical site infection rate for patient risk index scores of 0, 1, 2 and 3 was 1.9%, 8.0%, 13.1% and 20.0%, respectively and increased significantly according to patient risk index(p=.000). Sixteen of the fifty one(31.4%) surgical site infections were found during an outpatient visit after discharge. Multivariate analysis, identified two independent variables : duration of postoperation stay(p=.000), age(p=.037). The most frequent isolated organisms were Pseudomonas aeruginosa(21%) and Staphylococcus aureus(21%). Also Staphylococcus aureus were all MRSA(Methicillin Resistant S. aureus). Conclusion: In this study, SSI was analysed according to the degree of wound contamination and patient risk index after general surgery. The data that obtained from this study is expected that it would be available for surveillance and control of SSI.

• The Journal of Korean Academic Society of Nursing Education
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• v.9 no.2
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• pp.222-233
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• 2003

The purpose of this study was to identify the relationship between existential spiritual well-being, hope and self-empowerment in middle aged women. The subjects were 190 women who lived in Taegu, Korea and ranged in age from 35 to 59. The data was collected during the period from October 2nd to October 18th, 2002. The instruments were the revised existential spiritual well-being scale developed by Paloutzian and Ellison (1982), hope scale developed hope scale developed Nowotny(1989) and empowerment scale by Spreitzer(1995). The data was analyzed using descriptive statistics, pearson correlation coefficients and stepwise multiple regression. The results of this study were as follows : 1. Mean score of existential spiritual well-being was 4.18. Mean score of hope was 2.80. Mean score of empowerment was 3.73. 2. The score of existential spiritual well-being showed significantly positive correlation with the score of hope(r=.508, P=.000), self-empowerment(r=.458, P=.000). 3. There were significant differences in existential spiritual well-being according to age, presence of religion, leisure time activity. 4. There were significant differences in hope according to leisure time activity. 5. The most powerful predictor of existential spiritual well-being was hope and the variance explained was 25.8%. A combination of competence, leisure time activity, meaning, impact for 37.2% of the variance in existential spiritual well-being of middle aged women. Further studies need to be done to identify the effect of competence through the repeated studies and to develop a hope promoting program which can cause positive effects on a existential spiritual well-being.

• Publications of The Korean Astronomical Society
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• v.26 no.3
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• pp.103-114
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• 2011

We have carried out a follow-up study on the students who have participated or are going to participate in either the International Astronomy Olympiad (IAO), the Asia Pacific Astronomy Olympiad (APAO) or the International Olympiad on Astronomy and Astrophysics (IOAA) from 2002 to 2011. The survey questionnaires returned from ten high school students including five who are to participate in 2011 as well as fourteen college students have been analyzed in various aspects of their backgrounds and personal characteristics. In family life, their parents tend to have high educational background along with high expectations for their children. In regard to the academic environment, most students express a general satisfaction in school life, including their relationship with teachers and classmates. In personal characteristics, they describe themselves as inquisitive, perseverant, competitive, creative, self-motivated and goal-oriented, in addition to many other traits. Most students have a strong interest in astronomy which usually begins in middle schools through exposure to astronomy books. On top of it, the astronomy olympiad has provided them with an opportunity to strengthen their self-esteem, problem-solving ability and conviction about scientific careers. Accordingly, the experience in astronomy olympiad has led a considerable number of students to continuously studying in astronomy related fields or otherwise in other science and engineering areas. In conclusion, the astronomy olympiad plays such an important role that it can make a significant contribution to astronomy as well as science in general by having positive impact on the potential career path of its participants.