• 천문학회지
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• 제33권3호
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• pp.159-163
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• 2000

We have investigated one dimensional steady flow model of a typical magnetic flux tube in the solar transition region constrained to observed Differential Emission Measure (DEM) for the average quiet-Sun deduced by Raymond & Doyle (1981) with a flux tube geometry conforming to Doppler shifts of UV lines measured by Chae, Yun & Poland (1998). Because local heating and filling factor in the transition region are not well known, we considered two extreme cases, one characterized by the filling factor= 1 ('filled-up model') and the other set by local heating=0 ('not-heated model'). We examined how much the heating is required for the flux tube by recomputing a model through adjustment of the filling factor in such a way that 'not-heated model' accounts for the observed DEM.

• 보건교육건강증진학회지
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• 제6권1호
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• pp.91-105
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• 1989

The purpose of this study is to identify the body images of patints with low back pain and their status on adjustment of daily living. The data were collected from 11 general hospitals during Feburary 2, 1987 through May 30,1987. One hundred and ninety five subjects having physical therapy treatment because of low back pain were analyzed. For measurement of body image, 11 pairs of adjectives were used on semantic differential scale, and for measurement of adjustment of daily living, 10 items were used on a likert type scale. Results of the study are summerised as follows. 1. The average patient age were 34yeats and 62% of the patients were men. High school grade completed were 43.1% and Cause of Low Back Pain were respctively;Unknown etiology 31.8%, lifting heavy objects 27.7%, Traffic accident and injury 17.9%. Types of treatment were;medication plus physical therapy 54.9%, physical therapy only 22.6%. Average treatment duration were 24.5 months. 2. There were significant difference in the body image between before low back pain and after low back pain. The body image before low back pain were 59.89(Mean) but after low back pain were 37,24(Mean) and two groups were statistically significant (t=21.3, p<0.00l). 3. there were no significant difference in the body image between the male and female.(t=1.49, p＞0.05) 4. The correlation between body image and adjustment of daily living. in both sexes showed positive correlation coefficient; male(r=0.4648, p<0.00l) female(r=0.4516, p<0.00l) respectively. It means that patients with positive body image can adjust well in daily living. 5. The relation between the body image and general variables revealed sigificant difference with occupation and age.(F=2.12 p<0.05, F=3.48 p<0.05). That is different occupation and different age groups can show different body image. In conculsion with the above results, It is my strong belief that multidisciplinary approach including the concept of body image and patient education about postural care, activities of daily living, lifting mechanics should be applied in treating and dealing with those patients.

• 재활간호학회지
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• 제4권2호
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• pp.198-206
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• 2001

The purpose of this study is to compare sexual concerns and adjustment between men and women with spinal cord injuries. A total of 108 persons (67 men and 41 women), registered to the Spinal Cord Injury Organization or admitted at rehabilitation unit from February 1999 to February 2000, were selected as subjects of the study. Participants answered the questionnaires concerning importance of life events, sexual concern, sexual adjustment, relationship with a sex partner, and depression. The results are as follows : 1) There were no significant differences between men and women in the general characteristics except sexual dysfunction. 2) With respect to eleven different life areas, sex life ranked the fifth among men, whereas it occupied the lowest position for women among the 11 areas. However economic status was the most highly-ranked for both sex. 3) Men took much interest in the "methods and techniques for achieving sexual satisfaction", "Helping a partner cope emotionally with limitations on sexual activity", whereas women were interested in "Helping a partner cope emotionally with limitations on sexual activity" and "Ability to have children". 4) The means of sexual adjustment, relationship with a sex partner, and depression among men were higher than women. But there was no significant difference between two groups. As a result, the study suggests that there are no significant differences in the general characteristics between men and women with spinal cord injuries except sexual dysfunction. Men evaluated the sexual events highly compared to women, and differences were also shown in terms of sexual concerns between men and women. Therefore differential approaches to sexual rehabilitation are required; in both socio-psychological and physical aspects for men and particularly in socio-psychological respect for women.

• 수산경영론집
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• 제40권1호
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• pp.133-152
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• 2009

The purpose of this paper is to model price formation and analyze demand structures for fishes under the restriction of Korean fisheries regulations. This study suggests the model that the price of fish is formed by its quantity, expenditure, and habit persistence. In economic literature, such a fishery market demand is called the inverse demand with dynamic habit persistence. Based upon a static differential price formation model, the paper has generalized it dynamically incorporating habit persistence effects. The empirical results show that all the species have values less than one and (-) sign of price flexibilities, thus being price inflexible. The estimated habit adjustment coefficients are significant at the level of 1%. Especially, TAC species have the smaller values of them than those of other main fish species. The contribution and results are summarized as follows. First, the fishery market demand has a strong dynamic effects from habit persistence. Second, the fishery market demand structure could be analyzed in a way different from the ordinary demand analysis, which is based upon price flexibility, scale flexibility, and cross adjustment flexibility. Third, the limitation of this paper is that it ignores the increasing stock effects by catching restrictions, thus raising consumers' benefit in the future.

• Childhood Kidney Diseases
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• 제25권2호
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• pp.84-91
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• 2021

Purpose: We aimed to study the association of plasma neutrophil gelatinase-associated lipocalin (pNGAL) and leukocyte differential count in children with febrile urinary tract infection (UTI). Methods: Medical records of 154 children aged 1 month to 13 years with febrile UTI who were hospitalized were retrospectively reviewed. Associations between pNGAL levels and blood leukocyte differential count at admission and after 48 hours of treatment were investigated in children with or without acute pyelonephritis (APN). Results: The APN group (n=82) showed higher pNGAL levels, neutrophil count, monocyte count, and neutrophil-to-lymphocyte ratio (NLR), compared to the non-APN group (n=72) (all P<0.05). After adjustment for age and sex, pNGAL showed positive correlations with neutrophil count and NLR in both groups (all P<0.05). Additionally, it was correlated with the monocyte-to-lymphocyte ratio (MLR) only in the APN group (P<0.05). Before and after treatment, pNGAL was positively correlated with neutrophil count, NLR, and MLR in patients with APN while it was related with neutrophil count and NLR in those without APN (all P<0.05). Areas under the receiver operating curve of pNGAL, neutrophil count, NLR, and MLR for predicting APN were 0.804, 0.760, 0.730, and 0.636, respectively (all P<0.05). Only pNGAL was independently associated with the presence of APN in a multivariable logistic regression analysis (P<0.05). Conclusion: In children with febrile UTIs, pNGAL might be associated with leukocyte differential count and the presence of APN.

• 한국측량학회지
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• 제16권2호
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• pp.235-242
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• 1998

본 연구는 GPS 보조에 의한 항공삼각측량 및 자동차량항법장치 등과 같은 고정밀 측량에서 주요 오차 원인이 되고 있는 다중경로 오차를 검출하고 이를 요구 정확도로 축소시키는데 그 목적이 있다. 수신점의 다중 수신기를 고정한 후 동적 수신기가 연속적으로 이동할 때, 망조정시 smoothed코드 측정과 순수 코드 측정을 실행하여 동적수신기에 대한 단차분법 코드파 위치 해석에서 3차원 RMS 오차가 약 30% 축소됨을 알 수 있었다. 이러한 망조정들은 다중 수신점에서 실행되었지만, 위치결정은 항상 동적 수신기와 하나의 기준 수신점 사이의 단차분법에 의해 실행된다는 것에 근거한 것이고, 서로 매우 근접한 수신기로부터 이중차를 이용하여 대기 오차를 포함한 모든 상관성 오차를 상당히 축소할 수 있을 뿐만 아니라 다른 처리 기법들과 조합하여 사용할 있으리라 생각된다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.465-469
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• 2006

In recent years there has been considerable interest in the construction of super high-rise buildings. From the prior art, various procedures and devices for surveys during and after the phase of erection of a high-rise building are known. High-rise buildings are subject to strong external tilt effects caused, for instance, by wind pressures, unilateral thermal effects by exposure to sunlight, and unilateral loads. Such effects are a particular challenge in the phase of construction of a high-rise building, in as much as the high-rise building under construction is also subject to tilt effects, and will at least temporarily lose its - as a rule exactly vertical - alignment. Yet construction should progress in such a way that the building is aligned as planned, and particularly so in the vertical, when returning into an un-tilted basic state.It is essential that a straight element be constructed that theoretically, even when moving around its design centre point due to varying loads, would have an exactly vertical alignment when all biasing conditions are neutralised. Because of differential raft settlement, differential concrete shortening, and construction tolerances, this ideal situation will rarely be achieved. This paper describes a procedure developed by the authors using GPS observations combined with a network of precision inclination sensor to provide reliable coordinated points at the top of the worldwide highest-rise building under construction in Dubai.

• 아동학회지
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• 제29권5호
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• pp.65-78
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• 2008

This study examined whether parental psychological control influences adolescents' depressive feelings through personality features of dependency and self-criticism. Participants were 315 high school students (M=16 years) who completed questionnaires tapping two types of parental psychological control and student personality and depressive symptoms. Both girls and boys perceived equal levels of maternal and paternal separation-anxious psychological control. Boys perceived higher achievement- oriented psychological control of fathers than mothers; girls perceived equal levels of maternal and paternal achievement-oriented control. Structural relations between types of psychological control, personality features, and depressive symptoms were equivalent for both mothers and fathers and for both boys and girls. Results confirmed that separation-anxious and achievement-oriented control have negative effects on adolescents' adjustment through differential pathways; dependency and self-criticism, respectively.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.167.2-167
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• 2001

This paper presents guidance and control laws which guarantee a minimum fuel consumption and have obustness against various disturbances during a terminal-landing phase on the lunar surface. The nonlinear robust tracking control system is designed to track the reference profiles, which are expressed by exponential functions. An adjustment law in the tracking controller is given in the form of the differential equations with respect to the controller´s variable gains. Computer simulations are performed to examine the tracking accuracy, the robustness in a thrust failure mode, and the vertical soft landing at a pre-assigned point on the lunar surface. The results of numerical simulation show the effectiveness of the present control law.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1988년도 한국자동제어학술회의논문집(국내학술편); 한국전력공사연수원, 서울; 21-22 Oct. 1988
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• pp.466-470
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• 1988

A tunable reduced-order distillation model is proposed for real-time applications. To develop the model, a binary distillation column with MaCabe-Thiele assumptions was considered first and then the governing equations for the column were reduced to a simplified vector differential equations using the collocation method combined with cubic spline interpolation function. The final reduced-order model has four tuning parameters, relative volatilities and liquid holdups for rectifying and stripping sections, respectively. To assess the applicability of the developed model,the real-time adjustment of the model was tried by recursively updating the tuning parameters using the BKF algorithm. As a result, it was found that the reduced-model follows the simulated distillation process very closely as the parameters are improved.