• Investigative Magnetic Resonance Imaging
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• v.6 no.2
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• pp.152-157
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• 2002

Purpose : The differential diagnosis between Modic type I degenerative spine and infectious spondylitis sometimes is difficult, because the affected bone marrows in both disease show similar signal intensity on conventional MR imaging. We evaluate the usefulness of diffusion-wighted MR imaging for differential diagnosis between Modic type I degenerative spine and infectious spondylitis. Materials and methods : The spin-echo and diffusion-weighted MR images of eight patients with Modic type I degenerative spines and 14 patients with infectious spondylitis diagnosed by clinical findings or CT-guided biopsies we re analyzed. The diffusion-weighted imaging sequence was based on reversed fast imaging with steady-state precession (PSIF). Signal intensity changes of the vertebral bone marrow on conventional spin-echo and diffusion-weighted MR imaging were compared between degenerative spine and infectious spondylitis. Results : On T1-weighte d images, the affeted bone marrow in both disease showed hypointense signals. On T 2-weighted images, all of type I degenerative spine and 11 of infectious spondylitis showed hyperintensity, and three of infectious spondylitis showed heterogeneo us mixed signal intensity. On diffusion-weighted MR images, all of type I degenerative spine were hypointense with peripheral high signal intensity to normal vertebral body, but infectious spondylitis was hyperintense (n = 11) and hypointense (n=3). Conclusion : Diffusion-weighted MR imaging is useful to differentiate Modic type I degenerative spine from infectious spondylitis. On diffusion-weighted images, the high singal intensity of bone marrow suggests infectious spondylitis, whereas the low signal intensity of bone marrow with peripheral focal high signal intensity suggests type I degenerative spine.

• Journal of the Korean Society of Radiology
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• v.82 no.5
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• pp.1218-1230
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• 2021

Purpose To compare the per-patient diagnostic performance of simulated abbreviated MRI (AMRI) to that of conventional MRI (CMRI) with full-sequence dynamic gadoxetic acid (GA) enhancement for early-stage hepatocellular carcinoma (HCC) screening in high-risk patients. Materials and Methods A total of 201 consecutive patients at high-risk for HCC, who underwent 3T liver MRI, were included in this retrospective study. The AMRI protocol comprised T2-weighted imaging, hepatobiliary phase imaging after GA injection, and diffusion-weighted imaging. For each patient, two AMRI and CMRI image sets were independently reviewed by two radiologists. Inter-reader agreement was assessed using Cohen's kappa value. A composite reference standard was used to determine the diagnostic performance of each image set for each reader. Results A total of 93 HCCs were detected in 79 patients. The inter-reader agreement was almost perfect for both image sets (κ = 0.839, 0.948). In AMRI, the per-patient sensitivity and negative predictive values (NPV) were 94.9% and 96.4%, respectively. In CMRI, the per-patient sensitivity and NPV were 96.2% and 97.5%, respectively. Conclusion AMRI, using only three sequences, had a comparable diagnostic performance to CMRI in screening early-stage HCC. AMRI could be an alternative HCC screening tool for high-risk HCC patients.

• Journal of Intelligence and Information Systems
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• v.14 no.4
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• pp.47-68
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• 2008

The aim of this research is to develop a new business model using mobile RFID in exhibition spaces such as museums and art galleries. Using mobile RFID, the exhibition space is expected to be evolved from a simple media space only for the exhibition to an extended space integrating media, commerce and entertainment. This paper proposes a u-Exhibition business model and its scenario in the u-Exhibition space. We discuss the real-world issues for the implementation and show the ways of investigating working conditions for the business model through revenue simulation and analyzing the expected value of tag installed on the exhibition space by so-called 'tag evaluation model.'

• Journal of the Korea Society for Simulation
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• v.19 no.3
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• pp.7-16
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• 2010

In this paper, we propose an ambient light control method based on the difference of image frames in video. The proposed method is composed of three steps. 1) The first step is to extract a dominant color of a current frame. 2) The second step is to compute the amount of change and the representative color in the changed region using the difference image. 3) The third step is to make a new representative color. The difference image is created from two images transformed into the YUV color space. The summed color difference of each pixel is used for the amount of change. The new representative color is created by synthesizing the current color and the changed color in proportion to the amount of change. We compare the variations of the light effect according to time with and without the proposed method for the same video. The result shows that the new method generates more dynamic light effects.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.6 no.1
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• pp.74-89
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• 1995

Selective mutism is a childhood condition defined by persisten failure to speak in specific social situation when speaking is expected, dispite preserved ability to comprehend spoken language and speak. Present study is to investigate clinical characteristics, treatment method and outcome of 23 children who were diagnosed as selective mutism by DSM-IV criteria at the child psychiatry ouptatient department of SNUH. The results were as follows : 1) The Sex ratio was 1: 4.8, female dominant Mear age of onset was 33 years old and mean age of first referral was 7.7 years old. 2) 22% of subjects had perinatal problem such as low birth weight, preterm birth, 26% of the subjects have history of delayed language development. There are subjects who had been separated with mam caretaker before 3 years old(26%) and who experienced physical or psychological trauma before 3 years old(26%). A few subjects had enurests(30%) and encoprests(4%). 3) Many subjects(65%) had symbiotic relationship with their mother. These families consist of dominant, verbally aggressive mother and passive father. Parents of 39% of all subjects were judged to have definite psychopathology(social phobic, depression, hysterical trait or alcohol problem) 26% of all subject, were reported physically abused. 4) The personality trait of the subjects were frequently described as follows(in order of frequency) ; Shy(100%), anxious(83%), stubborn(83%)m rigid and tense posture(78%), immature(65%) overdependent(65%), irritable(52%), manipulative(39%), depressive(39%). 5) The mean performance IQ of 16 subjects by KEDI-WISC was 88.3 Among them, the subjects with IQ below 69 were seven and those with IQ above 70 were nine. When comparing these two group(Mental retardation group vs Normal IQ group), we could find some difference in language development, personality trait, family dynamics and treatment outcome. 6) Among several treatment methods for selective mutism, play therapy was the most frequently used method(65%). Other commonly used treatment methods were pharmacotherapy(21%), behavioral therapy(8%), combined therapy(play therapy+pharmacotherapy+family therapy+behavioral therapy)(12%), 7) Regarding the outcome of treatment 8.6% was evaluated as Excellent, 30.4% as Good, 52% as Fair, 8.7% as Poor at the tinic of treatment. At follow up interview 21.7% was evaluated Excellent, 13% as Good, 21.7% as Fair, 34.8% as Poor. 8) We classified all subjects by Havden's 4 subtype. Symbiotic mutism was most common(65%) and other subtypes are Speech phobic mutism(8.6), Reactive mutism(13%) and Passive-aggressive mutism(30%).

• Journal of The Korean Association For Science Education
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• v.35 no.3
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• pp.509-521
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• 2015

Argumentation is a social and collaborative dialogic process. A large number of researchers have focused on analyzing the structure of students' argumentation occurring in the scientific inquiry context, using the Toulmin's model of argument. Since SSI dialogic argumentation often presents distinctive features (e.g. interdisciplinary, controversial, value-laden, etc.), Toulmin's model would not fit into the context. Therefore, we attempted to develop an analytical framework for SSI dialogic argumentation by addressing the concepts of 'discourse clusters' and 'discourse schemes.' Discourse clusters indicated a series of utterances created for a similar dialogical purpose in the SSI contexts. Discourse schemes denoted meaningful discourse units that well represented the features of SSI reasoning. In this study, we presented six types of discourse clusters and 19 discourse schemes. We applied the framework to the data of students' group discourse on SSIs (e.g. euthanasia, nuclear energy, etc.) in order to verify its validity and applicability. The results indicate that the framework well explained the overall flow, dynamics, and features of students' discourse on SSI.

• (The)Study of the Eastern Classic
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• no.55
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• pp.59-84
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• 2014

This research is an attempt to newly interpret his academic evaluation and understand Seo Kye Bak Se-Dang's Sa Byeun Rok The Doctrine of the Mean. In academic world, his academic Characteristic was considered as anti-Neo-confucianism, out of Jung Ju Hak, out of Seong Ri Hak, and Sil Hak. His understanding of The Doctrine of the Mean was pretty critical, because he had unique academic characteristic to interpret Chinese classics rather than anti-Neo-confucianism, out of Jung Ju Hak, out of Seong Ri Hak, and Sil Hak. Especially, he took practical study with six Chinese classics as the central figure and it was a creative thing with philosophical method. He tried to find out original meaning which was essential thought of Confucianism, and pointed out disharmony for consistency about meaning of The Doctrine of the Mean when Jung Ja and Ju Ja interpreted The Doctrine of the Mean. It appeared as an effort of trying agreement between name and its duty, and role and function in things and act. In addition, he thought The Doctrine of the Mean as trying to follow nature, and it was the way of people to practice in bright side of mind. It is different from Ju Ja's thought which explains principle about people and things, and it has strong reality which is foundation of practice and allows dynamic energy of human life. Therefore, practice style of The Doctrine of the Mean develops filial duty as center of mass and appears manifestation of human's independence through how people pracice it. To sum up, he traced The Doctrine of the Mean as reality, practice, and physical science rather than ideal, theoretical, and metaphysical philosophy. It developed the spirit of study as understanding world as the center of human, thinking over the way of people, and studying the essence of Confucianism with practice of thought.

• Korean journal of communication and information
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• v.79
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• pp.104-139
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• 2016

This study investigated how Korean media covered Japan's position on her past history issues proposed by Abe' Shinzo's cabinet. The researchers adopted Entman's analytical tools for frame analysis and the concept of "frame changing" proposed by Chi and McCombs. The analysis rendered several propositions. First of all, the Korean media's coverage on Japan's past history issues focused heavily on the current conflict among two nations rather than constructing a futuristic viewpoint based on a thorough discussion on the historical background of the topic. In addition, it emphasized that the conflict should be resolved by political negotiations between the two governments. Secondly, the news coverages depicted "comfort women" issues as the prime element of the conflict, describing Abe's cabinet as the major inducer of the conflict. Ideological and political divisions among Korean media did not significantly influence on how they frame Japan's past history issues. In general, Korean media took the stance of ethnocentric "patriotic journalism," advocating Korean government's position and covering the emotional reactions from Korean public instead of providing through and through objective news coverage on Japan's past history issues.

• Journal of Hospice and Palliative Care
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• v.21 no.2
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• pp.41-50
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• 2018

Spirituality is an essential part of human beings. Spiritual care, designed to meet the spiritual needs of terminally ill patients and their families, is one of the most important aspects of hospice and palliative care (HPC). This study reviewed and analyzed literature utilizing the most commonly used Korean and international healthcare databases to identify care models that adequately address the spiritual needs of terminally ill patients and their families in practice. The results of this study show that spirituality is an intrinsic part of humans, meaning that people are holistic beings. The literature has provided ten evidence-based theories that can be used as models in HPC. Three of the models focus on how the spiritual care outcomes of viewing spiritual health, quality of life, and coping, are important outcomes. The remaining seven models focus on implementation of spiritual care. The "whole-person care model" addresses the multidisciplinary collaboration within HPC. The "existential functioning model" emphasizes the existential needs of human beings. The "open pluralism view" considers the cultural diversity and other types of diversity of care recipients. The "spiritual-relational view" and "framework of systemic organization" models focus on the relationship between hospital palliative care teams and terminally ill patients. The "principal components model" and "actioning spirituality and spiritual care in education and training model" explain the overall dynamics of the spiritual care process. Based on these models, continuous clinical research efforts are needed to establish an optimal spiritual care model for HPC.

• Journal of Hospice and Palliative Care
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• v.12 no.3
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• pp.115-121
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• 2009

Despite a recent increased nation's attention given to improving end-life care, we professionals need to be more critical and reflective on our realities surrounding hospice palliative care. The aim of this paper is to suggest that palliative care models can be used for patients/families in the last phase of life and examine whether they are appropriate for caring them in congruence with philosophy of hospice. The hospice experience model (HEM) of Eagan & Labyak and the developmental model of Byock are introduced and examined for their congruence with philosophy of hospice in applying to clinical practice. The HEM as a patient/family value-directed end of life care model emphasizes three principles; unique experience of patient/family, interactions/relationships among multiple dimensions of personhood and between family, and personal growth and development in the face of suffering through a life-completion. The developmental model stipulates dying as the last stage of living, a stage of life cycle in which patients/family may have growth through life-completion in multidimensional relationships of personhood. The model includes the developmental landmarks and tasks for life-completion as the framework to guide a means of professionals' to recognize their opportunity to grow. The landmarks and tasks include worldly and social affair, individual relationships, intrapersonal, and transcendent dimension. The models could work as appropriate palliative care models for patients/families in the last stage of living. The professionals need to be encouraged to apply the models to end of life care setting.