• The Journal of the Korea Contents Association
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• v.14 no.12
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• pp.854-862
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• 2014

Attention deficit hyperactivity disorder (ADHD) students' intellctual defects, learning problems, and poor academic achievements seem to be due to significantly lower intelligence compared to the normal students, but rather the characteristic of inability to pay attention at a given time can be seen as the more attributing reason. In this study, a comparison between the ADHD students and the normal students will be performed using a fMRI analysis in order to differentiate the brain function between the two groups during a working memory task performance and to assess the difference in the activated regions of the brain. Clinical survey examinations and fMRI measurements were performed for a group of 26 elementary students from the Incheon area. The stimulus of fMRI was a working memory. Cartography statistically analyzed parameters and the Statistical Package of Social Sciences using single-sample t-test, two-sample t-test, were analyzed by multiple regression analysis, the statistical significance level was p<0.05 in, respectively. The disproportionate developments could be seen in the ADHD students group such as the frontal cortex, parietal cortex, thalamus, and caudate nucleus, among others. In addition, as some students felt the increase in the difficulty of working memory task performance, the orbitofrontal cortex and the hippocampus were activated, which seems to be the result of an effort for looking for an answer. More types of ADHD students needs to be secured as research subjects, and more stimulations for fMRI experiments should be considered as it would be useful in the overall evaluation of brain function.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.28 no.3
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• pp.217-240
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• 2017

The purpose of this study was to investigate the semantic network analysis to understand image contents and to examine the degree to which words, word clusters contributed to the formation of semantic map within image contents. For this research, from 1993 until 2016 the field of the image contents were collected for a total of 2,624 cases papers. The word appeared in Title analyzed the social network by using the R program of Big Data. The results were as follows: First, The field of image contents is based on researches related to 'image', 'media' and 'contents'. Second, there is a three-step flow ('education' -> 'media' -> 'contents') of research in the field of image contents. Third, researches related to 'broadcasting', 'digital', 'technology', and 'production' were continuously carried out. Finally, There were new research subjects for each regime.

• The KIPS Transactions:PartB
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• v.16B no.3
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• pp.195-202
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• 2009

In this paper, we propose the regions segmentation method of the white matter and the gray matter for brain MR image by using the ant colony optimization algorithm. Ant Colony Optimization (ACO) is a new meta heuristics algorithm to solve hard combinatorial optimization problem. This algorithm finds the expected pixel for image as the real ant finds the food from nest to food source. Then ants deposit pheromone on the pixels, and the pheromone will affect the motion of next ants. At each iteration step, ants will change their positions in the image according to the transition rule. Finally, we can obtain the segmentation results through analyzing the pheromone distribution in the image. We compared the proposed method with other threshold methods, viz. the Otsu' method, the genetic algorithm, the fuzzy method, and the original ant colony optimization algorithm. From comparison results, the proposed method is more exact than other threshold methods for the segmentation of specific region structures in MR brain image.

• Journal of the Korean Society of Radiology
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• v.17 no.1
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• pp.99-106
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• 2023

This study measured the signal intensity (SI) of the hippocampus in relation to memory via fMRI analysis of 3 types of radiology symbols, 3 types of nuclear medicine symbols, and 3 types of oncology symbols among the most commonly employed medical symbols in hospitals. The following are the conclusions of the study. result of analyzing the SI values for symbol 1, symbol 2, and symbol 3 of the radiology, nuclear medicine, and oncology departments, symbol 3 had the highest SI value (1.72 ± 0.56) in radiology, symbol 2 had the highest SI value (1.69 ± 0.64) in nuclear medicine, and symbol 2 had the highest SI value (1.64 ± 0.63) in oncology. The overall mean of radiology, nuclear medicine, and oncology symbols was 1.62 ± 0.60 for nuclear medicine, 1.61 ± 0.59 for oncology, and 1.49 ± 0.49 for radiology. According to the overall SI measurement results, symbol 3 in radiology, symbol 2 in nuclear medicine, and symbol 2 in oncology were confirmed to have high SI values. If symbols with high SI values are used in a hospital, it is believed to be beneficial for navigating in any hospital.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.631-633
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• 2002

본 논문은 U5P 프로세서 기반의 스마트 카메라에 사용되는 효율적이고 소형화된 영상 저리 플랫폼의 설계에 대해 설명한다 제한된 소량의 기억장치를 갖는 내장형 시스템의 제약조건을 만족시키기 위해서 제안된 플랫폼은 블록 처리의 개념을 사용하여 입력 영상을 처리한다. 먼저 입력 영상이 적당한 수의 데이터 블록으로 나누어진다. 그리고 나서 영상 불록들은 일련의 블록 기반 함수들에 의해서 처리된다. 처리된 블록들은 다시 하나의 결과 영상으로 모아진다. 블록 처리는 요구되는 메모리 크기를 줄여줄 뿐만 아니라 multithreading과 병렬 처리를 통한 더 빠른 수행을 가능하도록 해준다. 플랫폼을 구성하는 대부분의 함수들은 이러만 블록 처리의 장점을 살려서 일련의 영상 블록들을 처리한다. 소개되는 플랫폼은 특화된 하드웨어를 사용하지 않고 사용자의 요구에 맞는 또다른 영상 처리와 압축 기법을 추가하는 것이 가능하게 해준다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.241-244
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• 2002

본 논문은 Post-PC 에 사용되는 DSP 프로세서 기반 디지털 카메라의 효율적이고 소형화된 영상 처리 플랫폼 설계에 대해 설명한다. 제한된 소량의 기억장치를 갖는 내장형 시스템의 제약조건을 만족시키기 위해서 제안된 플랫폼은 블록 처리의 개념을 사용하여 입력 영상을 처리한다. 먼저 입력 영상이 적당한 수의 데이터 블록으로 나누어진다. 그리고 나서 영상 블록들은 일련의 블록 기반 함수들에 의해서 처리된다. 처리된 블록들은 다시 하나의 결과 영상으로 모아진다. 블록 처리는 요구되는 메모리 크기를 줄여줄 뿐만 아니라 multithreading 과 병렬 처리를 통한 더 빠른 수행을 가능하도록 해준다. 플랫폼을 구성하는 대부분의 함수들은 이러한 블록 처리의 장점을 살려서 일련의 영상 블록들을 처리한다. 소개되는 플랫폼은 특화된 하드웨어를 사용하지 않고 사용자의 요구에 맞는 또다른 영상 처리와 압축 기법을 추가하는 것이 가능하게 해준다.

• Journal of Convergence for Information Technology
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• v.12 no.4
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• pp.278-285
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• 2022

This study presence in VR advertising into three types presence. Further, through an experiment, the study empirically verifies the kind of recalled information depending on the flow which forms users' attitudes towards the content. The experiment was conducted with a factor design between 3X2 subjects. Hyundai Motor's Ioniq VR video was conducted, and a questionnaire of 143 subjects was used for the study. The results revealed that positive attitudes were formed towards the advertisement used in the experiment when the level of emotional presence was the highest. In addition, higher flow levels established positive attitudes towards the advertisement. and Cognitive presence's effects on memory, ARM such as product-attribute information was found to increase when the flow level is high; however, GRM such as overall product evaluation was found to increase when the flow level is low.

• The Journal of the Convergence on Culture Technology
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• v.1 no.2
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• pp.1-19
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• 2015

The history of modernization of Korea is divided into two folds of the colonial era in the 20's and the economic development era in the 60's. Most of the spaces built in the process of modernization were public spaces developed by the drive of the government. These spaces of modernization are functionality-oriented public places of production and at the same time, and they are the spaces of national power to symbolize the identity of national authorities. Along with changes in the society, modern spaces were reduced down to monument buildings without functionality and this requires new definition to renew the identity of modern spaces. Small stations, power plants, mines, warehouses, abandoned factories, and etc... the study has paid attention to the process of changing thought, one of the main characteristics of modernization, the relations of modern concepts projected in the spaces, framework of modern society, and placeness in the process of framework building and relations of people in the spaces with video records on the process of rebuilding new identity of modern spaces and memories of the spaces. The relations of modern spaces and memory were explored in < Seoul Station > while the relations between modern spaces and records and place identity were explored in < Onyang Folk Museum > and < Okpo Shipyard > respectively. In the relations between space identity and memory in each space, the ironic relations of power in modern spaces (placeness) and personal narrative (memories) were explored with oral narrative and video footage.

• Progress in Medical Physics
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• v.26 no.2
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• pp.72-78
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• 2015

Organic solvents are known toxic effects like vertigo, behavioral obstacle, distracting, and peripheral neuropathy in neuron areas. However, there have been few studies how neurotoxic solvents-exposed workers are affected by the cognitive load of preceding working memory tasks. Therefore, we used fMRI as to measure the neural correlates of working memory impairment in occupational workers who had from chronic exposure to organic solvent. Twenty-nine solvent-exposed workers were included in this study. Each participant concluded the verbal N-back tasks (1- and 2-back) during the fMRI acquisition. Within-group analyses showed fronto-parietal networks were active in each condition. Direct comparisons between 1- and 2-back showed higher activation during the 2-back than 1-back. We found that increased activation of these regions at lower task demand is associated with increased cost of implementing.

• The Journal of the Korea Contents Association
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• v.10 no.2
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• pp.155-164
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• 2010

This dissertation is considered a historic generation that Chinese film $6^{th}$ director remembers through their life. Also it is figured out historic anguish and hurt how it was remembered and appeared in film. They have made actual films through their efforts which are different from the conventional generation. In addition, between memory and oblivion the time's signification in the history is showed how what way can be represented. It was presented the time's anguish through memory's metaphor in Chinese film $6^{th}$ works. Also, it was shown the existence's reality from dream was losing as memory was hiding between desire and despair. Additionally, the self of daily was expressed to unconcernedly accept reality, and its against the unchangeable world's eye and memory. The $6^{th}'s$ films' desire was expressed passive appearance to accept reality with losing dream in these three things; cannot be reality in the process to figure out own natural character, and appearance to keep traditional character, finally gradually changing reality. When $6^{th}$ directors analysis the history as memory, social repression follows family's repression, family's repression brings personal repression, and then repression changes to desire, finally the life as a reaction could be maintained. In conclusion, personal desire was covered for fantasy, and the overcoming figure was represented. Moreover, Chinese face that $6^{th}$ directors have memorized was presented through these sentiments.