• International Journal of Air-Conditioning and Refrigeration
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• v.8 no.2
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• pp.11-22
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• 2000

Holographic interferometric tomography can provide reconstruction of instantaneous three-dimensional gross flow fields. The technique however confronts ill-posed reconstruction problems in practical applications. Experimental data are usually limited in projection and angular scanning when a field is captured instantaneously or under the obstruction of test models and test section enclosures. An algorithm, based on a series expansion method, has been developed to improve the reconstruction under the ill-posed conditions. A three-dimensional natural convection flow around two interacting isothermal cubes is experimentally investigated. The flow can provide a challenging reconstruction problem and lend itself to accurate numerical solution for comparison. The refractive index fields at two horizontal sections of the thermal plume with and without an opaque object are reconstructed at a limited view angle of 80$\circ$. The experimental reconstructions are then compared with those from numerical calculation and thermocouple thermometry. It confirms that the technique is applicable to reconstruction of reasonably complex, three-dimensional flow fields.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.29B no.9
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• pp.37-49
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• 1992

The standard definition of computational vision is a set of inverse problems of recovering surfaces from images. Thus the common characteristics of the most early vision problems are ill-posed. The main idea for solving ill-posed problems is to restrict the class of admissible solutions by introducing suitable a priori knowledge. Standard regurarization methods lead to satisfactory solutions of early vision problems but cannot deal effectively and directly with a few general problems, such as discontinuity and fusion of information from multiple modules. In this paper, we discuss limitations of standard regularization theory and present new stochastic method. We will outline a rigorous approach to overcome part of ill-posedness of image restoration, edge detection, and stereo vision problems, based on Bayes estimation and MRF(Markov random field) model, that effectively deals with the problems. This result makes one hope that this framework could be useful in the solution of other vision problems.

• International Journal of Naval Architecture and Ocean Engineering
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• v.6 no.1
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• pp.175-185
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• 2014

This study presents the prediction of propagated wave profiles using the wave information at a fixed point. The fixed points can be fixed in either space or time. Wave information based on the linear wave theory can be expressed by Fredholm integral equation of the first kinds. The discretized matrix equation is usually an ill-conditioned system. Tikhonov regularization was applied to the ill-conditioned system to overcome instability of the system. The regularization parameter is calculated by using the L-curve method. The numerical results are compared with the experimental results. The analysis of the numerical computation shows that the Tikhonov regularization method is useful.

• Journal of Preventive Medicine and Public Health
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• v.32 no.3
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• pp.400-414
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• 1999

Objectives: This is a descriptive study which was carried out to identify characteristics of the chronic mentally ill and their families in a rural area and the influencing factors on family burden. Methods : Data was collected for seven months beginning April 1, 1998 by questionnaire from chronic mentally ill patients and their families in two towns and seven townships of the rural areas of Kyonggi Province. In additional to the mental diagnosis of the mentally ill patients, family burden was measured by interviewing the other family members using the questionnaire developed by Pai & Kapur (1981). Of those interviewed, 103 patients were selected for final analysis. Results : Of 103 mentally ill patients, 36.1% of the subjects were not under treatment. In particular, of 29 patients with schizophrenia, 48.3% of the subjects had stopped taking medication and 6.9% of the subjects had never been treated. According to the results of a specialized examination by a psychologist, 81% of patients were in need of Hospitalization. Most primary caregivers were parents. Of the 101 primary caregivers in the study, 39.6% were over 65 years old. In case of death of the primary caregiver, 50.5% of these 101 mentally ill patients would not have anyone to care for them. Of the various kinds of family burden, primary caregivers most often reported psychological stress. Overall, the families of dementia and schizophrenia patients complained of the most family burden. Through univariative analysis, the variables of sex, education and current treatment type of the patients, the relationship with the patient and marital status of the primary caregiver and the number of people living together in the household showed significant correlation with the family burden of schizophrenia patients. Univariative analysis also showed that there were a number of variables which were correlated to the family burden in mentally retarded patients. Concerning the need for mental health services, the most common requests were for entitlement to disability benefits and housing programs. Conclusions: Community mental health services in rural areas must be developed, planned and executed in consideration of the local situation. In particular, the development of various family support programs is needed in order to mitigate emotional, mental and economic burdens and carry out a positive role to care for and rehabilitate patients.

• Korean Journal of Social Welfare
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• v.63 no.1
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• pp.5-28
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• 2011

This study, based on the research on the history of life, aimed to recompose and analyze into what life progressive structure the life experience by the mentally ill, after the onslaught of the disease, developed in a bid to understand the risk progress in the mentally ill's life, and to determine what contributed to the current stabilized recovery and adjustment. Five mentally ill persons participated in the study, and Sch$\ddot{u}$tze's narrative interview was used to gather data. The gathered data were analyzed according to Sch$\ddot{u}$tze's process structure of life. The interviewees' life experiences were chronologically organized as understood, and significant stories were recomposed that not only brought about changes but also helped overcome their disabilities in the process of treatment and rehabilitation after the onslaught of the disease. As a result, their experiences were recomposed into the stage of onslaught of the mental illness and confusion, and into the stage of intensive treatment and rehabilitation. The former was categorized into suppression by the disease, repetition and endurance of the painful life, and separation from their family and frustration. The latter was categorized into the rediscovery of self through social role change, others who helped realize the life potential, the expansion of mental health services in the community, obstacle to the integration of communities, re-integration of family relationships, re-analysis of experience of the disease through the examination of the life prior to onslaught of the disease, and expectation for the future. Also, these themes were comparatively examined so as to examine the crisis progress in the mentally ill's life after the onslaught of the disease, as well as the life transfer process through positive rehabilitation. Lastly, on the basis of these results, important areas of mental health services for the mentally ill were discussed.

• Korean Journal of Social Welfare
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• v.68 no.3
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• pp.127-147
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• 2016

The purpose of this study was to examine the impact of 10-year psychosocial rehabilitation services provided by a psychosocial rehabilitation center on the quality of life for the mentally ill. The data were collected from a psychosocial rehabilitation center located in Daegu metropolitan area using a quasi-experimental study design. The experimental group consisted of 23 mentally ill subjects and the comparison group consisted of 23 mentally ill subjects that did not use the mental health services voluntarily. The quality of life were measured at baseline and every year over 10-year period. The collected data were analyzed using Hierarchical Linear Modeling(HLM). The findings of this study were as follows: First, it was found that the psychosocial rehabilitation services were effective increasing experimental group's quality of life outcomes. Second, the analyses indicated that the psychosocial rehabilitation services' effectiveness could be maintained at least 10 years indicating that the services had a long-term positive impact on the mentally ill. Third, it was revealed that the experimental group's quality of life outcomes improved over time showing a curvelinear shape rather than showing a linear pattern. The psychosocial rehabilitation services provided by a psychosocial rehabilitation center were positively affected the quality of life as well as maintained at least 10 years for the mentally ill. Finally, the implications and limitations of these findings were discussed.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.11 no.sup1
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• pp.111-116
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• 2008

Immunonutrition is the provision of specific nutrients that modulate the activity of the immune system. Several nutrients including arginine, glutamine, nucleotides, omega-3 fatty acids, vitamins, minerals, and prebiotics can be provided to enhance immunity in critically ill patients. Supplying immunonutrition to critically-ill children, better prognosis and shortening of the hospital stay are expected from its immuno-modulating effects. Therefore, immune-enhancing enteral and parenteral formulas can be recommended in children with severe illness.

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
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• pp.201-201
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• 2005

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
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• pp.200-200
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• 2005

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
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• pp.231-231
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• 2005