• Sleep Medicine and Psychophysiology
• /
• v.6 no.2
• /
• pp.143-148
• /
• 1999

Objectives: We studied correlations between neuropsychological tests and perceptual disorder in patients with head trauma and psychiatric patients in order to explore the functional localization of brain in perceptual disorders. Methods: Halstead Reitan Neuropsychological Test Battery, Korean Wechsler Intelligent Scale, and Minnesota Multiphasic Peronality Inventory(MMPI) were administered to one hundred ninteen patients consisting of sixty nine psychiatric patients and fifty patients with brain damage. We tested the correlation between results of neuropsychological tests and peceptual disorder scale PDS) made from nine items related with perceptual disorder in MMPI. T-tests between twenty one higher scorers and seventeen lower scorers of PDS were also performed in the psychiatric group. Results: In brain damage group, significant correlations were found in tests related with function of frontal lobe such as category tests, trail making tests, tactual performance test, and fingertip number writing test, and significant correlations were also noted in the tests related with function of right hemisphere such as tactual performance test, performance, picture completion, picture arrangement and block design. Tests related with subcortical function such as digit symbol test, arithmetic and digit span were signigicantly correlated, too. In psychiatric group, there were significant differences of PDS in the tests related with function of right hemisphere such as picture completion, block design, and right laterality index, and in the tests related with function of left hemisphere such as comprehension, vocabulary, and similarities. Conclusion: Perceptual disorder seems to be related with functions of frontal lobe, right hemisphere, and subcortex in both groups. In a psychiatric group, left hemisphere may be also partially related with perceptual disorder.

• The KIPS Transactions:PartD
• /
• v.11D no.7 s.96
• /
• pp.1483-1490
• /
• 2004

To accomplish a project successfuly, we have to estimate develpment effort accurately. But, development effort is different to software size and operation environment. Usually, we made use of function point for estimating development effort. In this paper. we make use of 789 project data. It is related to development projects in 1990`s. We investigate the variable affecting development effort. Also, we exedcute multiple liner regression analysis for looking linear relation about variables. We find the regression equation for multistage by dividing PDR that influ-enced development effort step by step.

• Sleep Medicine and Psychophysiology
• /
• v.7 no.1
• /
• pp.60-66
• /
• 2000

Objectives: The Psychopathology of schizophrenia was expected to be related with focal dysfunction of brain while schizophrenia is recognized and studied as the brain disease. Authors studied correlation between neuropsychological tests and delusion which is representative symptom of schizophrenia in patients with head trauma and psychiatric patients in order to explore the functional localization of brain in delusional symptom. Methods: Halstead Reitan Neuropsychological Test Battery and Korean Weschler Intelligent Scale and Minnesota Multiphasic Personality Inventory(MMPI) were administered to one hundred ninteen patients consisted of sixty nine psychiatric patients and fifty patients with brain damage. We tested correlation between results of neuropsychological tests and delusional scale made from twenty four items related with delusion in MMPI. T-test between eighteen higher delusion scorers and twenty one lower scorers was examed in psychiatric group. Results: In brain damage group, signigicant correlations were found in the tests related with function of frontal lobe such as category test, trail making AB test, tactual performance test, digit symbol test and fingertip number writing test, and significant correlations were also noted in the tests related with function of left temporal and parietal lobes such as information, comprehension, vocabulary, similarities and speech sound perception test. The tests related with the function of right hemisphere such as tactual performance test location, picture completion and performance, and the tests related with subcortical function such as arithmetic, digit span, attention, digit symbol test, digit symbol and trail making AB test were signigicantly corelated with delusional scale too. In psychiatric group there were significant difference of delusional score in the tests related with function of left hemisphere such as vocabulary, vocable IQ, comprehension and language, and in the tests related with subcortical function such as N 120 voltage, digit symbol and arithmetic. Conclusions: Delusion seems to be related with function of frontal lobe, left hemisphere and subcortex in both groups. Right hemisphere may be also partially related with delusion.

• The Korean Journal of Rehabilitation Nursing
• /
• v.4 no.2
• /
• pp.232-239
• /
• 2001

이 논문의 목적은 재활기능을 측정하는 FIM 도구(영문)를 한국어로 번역하고 한국 한국문화에 적합한지를 문화적 타당도를 검증하기 위함이다. 이를 위해 FIM 도구를 소개하고 타당도 검증을 위해 Flaherty et al.(1988) 등이 소개한 횡문화적 일치성 검증을 위한 5가지 단계 중 2가지 단계 즉 전문가 집단의 내용타당도 검증과 역번역 절차를 사용하였다. 연구 결과 FIM 도구는 사회 심리적 도구가 아닌 재활환자의 기능을 측정하기 위해 사용된 도구여서 여기에 사용된 용어나 문장들은 비교적 간결하고 번역에 혼동을 초래할 수 있는 형용사나 은유법은 거의 사용되지 않아서 의미는 일치한 수준으로 나타났다. 그러나 47쪽에 해당되는 방대한 도구를 번역함에 있어 연구자가 5문장을 해석하지 않은 것이 나타나 재해석을 하였고, 의미를 더 정확하게 전하게 하기 위해 '사고 없음'의 문장을 '옷이나 침요에 실금하여 적시는 사고가 없음'으로 풀어서 설명하였고, '배뇨 사고 없음' 혹은 '배변 사고 없음'으로 번역하였다. 생활양식의 차이로 인해 크게 2가지 차이가 나타나 한국에서 이 도구를 사용하고자 할 때는 신뢰도 검증은 물론 다소의 변형이 불가피 한 것으로 나타났다. 2가지의 생활양식의 차이는 식습관의 차이와 온돌과 침대 문화의 차이였다. 첫째, 한국에서는 식사시에 포크 대신 젓가락을 사용한다. 그러나 손을 잘 사용하지 못하는 장애인의 경우 젓가락 대신 포크를 사용하게 되므로 이 때 포크 사용은 보조기로 고려되어서 측정 점수는 7점이 아닌 6점으로 측정되어야 할 것을 제안한다. 둘째, 한국 사람들은 온돌문화를 갖고 있어 전통 양식의 가옥에 거주하는 장애인의 경우 개조된 가옥에서는 휠체어를 사용 할 수 있지만 그렇지 않은 경우 휠체어 없이 앉아서 침대나 욕실 및 변기로 이동이 가능하다. 이런 경우 앉아서 이동할 수있는 환자들의 기능 정도를 정밀하게 검토하여 측정 가능한 점수로 환원해서 사용할 것을 제안한다.

• Sleep Medicine and Psychophysiology
• /
• v.11 no.1
• /
• pp.44-49
• /
• 2004

Objectives: The purpose of this study was to investigate whether longitudinal changes in positive and negative symptoms affect cognitive functioning in chronic schizophrenia. Methods: Sixty-eight patients diagnosed with DSM-IV schizophrenia were examined on two occasions over 6 months for symptoms and cognitive changes. Symptoms were measured by PANSS. Cognitive functions were examined for sustained attention, executive function, concentration and attention, and verbal memory and learning using Degraded Stimulus Continuous Performance Test, Wisconsin Card Sorting Test, Digit Span, and Rey Auditory Verbal Learning Test, respectively. Twenty control subjects were assessed to compare the cognitive scores of remitted schizophrenic patients. Results: Patients showed significant improvement in symptoms and all cognitive tests after 6 months treatments. Significant improvements in positive and negative symptoms did not predict improvements in any aspect of cognitive functioning measured. Normal controls performed significantly better than remitted schizophrenic patients on all cognitive tests. The results show no relationship between change in symptoms and change in cognition in chronic schizophrenia. Conclusion: We suggest that symptomatic and cognitive impairment may be a distinct construct. These findings highlight the importance of treating cognitive impairment in addition to the clinical symptoms of schizophrenia.

• Journal of Korea Entertainment Industry Association
• /
• v.13 no.1
• /
• pp.199-206
• /
• 2019

This study aims to identify whether the action-observation training impacts on the improvement of stroke patient's cognitive functioning. When it comes to the research methods, Korean version of Mini-Mental State Examination (MMSE-K) and Literacy Independent Cognitive Assessment (LICA) conducted to assess samples between 23 April and 18 May 2018. Samples are seven patients who are hospitalized in Kyung-In region. In the meantime, seven tasks such as the range of joint motion (ROM) dance, arrangement of pullover clothes, lacing-ups of a pair, folding up a facecloth and socks, the origami and tying a necktie implemented as the action-observation programme. In order to analyse collected data, descriptive statistics analysis, paired t-test and the Wilcoxon signed-rank test were carried out via SPSS version 20 (a statistics programme). The change in value from MMSE-K showed its statistical significant as 3.29 (±1.38, p<.001) as well as value from LICA in recollective powers was 12.16 (±6.73), therefore, the statistic is said to be statistically significant. In conclusion, action-observation training most influenced recollective powers amongst stroke patient's cognitive functioning areas. Even though development of cognitive functioning discovered in other areas, its values were possibly statistically insignificant. Hence, future research ought to demonstrate which areas action-observation training is effective according to brain lesion site.

• Pediatric Gastroenterology, Hepatology & Nutrition
• /
• v.10 no.1
• /
• pp.44-50
• /
• 2007

Purpose: The role of plain, abdominal radiography in childhood constipation has not been fully evaluated. The aim of this study was to determine the accuracy and reliability of scoring systems assessing a fecal load on plain, abdominal radiographs in children with functional constipation. Methods: Plain, abdominal radiographs from 38 constipated children and 39 control children were examined by four independent inspectors, pediatric residents. Four inspectors independently scored the radiographs according to three different scoring systems Barr, Blethyn, and Leech. No clinical information about the patients was available to the inspectors. Each abdominal radiograph was evaluated on two separate occasions, one week apart. Kappa coefficients were calculated as indicators of inter-and intra-inspector variability, coefficients <0.20, 0.21~0.40, 0.40~0.60, 0.61~0.80 and 0.81~1.00 were considered to indicate poor, fair, moderate, good, and very good agreement, respectively. Results: The Leech score showed the highest reproducibility: the inter-inspector agreement was uniformly very good on two separate occasions (${\kappa}$ values of 0.88, 0.91, 0.92, 0.86 in the first time and 0.81, 0.88, 0.89, 0.84 in the second time). Agreement using the Barr score was good (${\kappa}$ values of 0.66, 0.67, 0.69, 0.66 in the first time and 0.68, 0.65, 0.71, 0.68 in the second time). However, agreement for the Blethyn score was the lowest of the three scoring systems. The Leech scoring system had the highest sensitivity and specificity compared to the Barr scoring system for the diagnosis of functional constipation by plain, abdominal radiographs. Conclusion: The Leech score appeared to be a more accurate and reliable method because of its high sensitivity and specificity for evaluating the fecal load on plain, abdominal radiographs in children with functional constipation. Therefore, the Leech scoring system was found to be the most useful for assessment for the degree of constipation on plain, abdominal radiographs in children.

• Proceedings of the Korean Information Science Society Conference
• /
• 2011.06c
• /
• pp.191-194
• /
• 2011

문서를 이루는 단어들의 빈도수가 지수법칙(power law)를 따른다는 지프의 법칩(Zipf's law)이 있다. 이러한 단어분포를 고려하여 문서의 토픽을 찾아내는 기계학습법이 디리쉴레 프로세스(Dirichlet process) 이다. 이를 발전시켜서 데이터의 잠재 요인(latent factor)들을 베이즈 확률모델에 기반한 샘플링 바탕으로 찾는 방법이 인디언 뷔페 과정(Indian buffet process) 이다. 우리는 25가지의 특징(feature)들에 대한 점수(rating)들이 볼드(blood oxygen dependent level) 신호와 함께 주어지는 PBAIC 2007 데이터에 주성분 분석법(principal component analysis)를 적용했다. PBAIC 2007 데이터는 비디오 게임을 수행하며 기능적뇌영상(functional magnetic resonance imaging, fMRI) 촬영을 하여 얻어진 공개데이터이다. 우리의 연구에서는 주성분 분석법을 이용하여 10개의 독립 성분(independent component)들을 찾았다. 그리고 1.75초 마다 촬영된 BOLD 신호와 10개의 고유벡터(eigenvector)들간의 내적을 취하여 가중치(weight)를 구하였다. 성분들의 가중치를 낮은 순서로 정렬함으로써 각 시간마다 주도적으로 영향을 미치는 성분들을 알아낼 수 있었다.

• Korean Journal of Psychosomatic Medicine
• /
• v.11 no.1
• /
• pp.36-43
• /
• 2003

Objectives: The purpose of this study was to evaluate the difference of cognitve function among patients with posttraumatic stress disorder according to severity of symptoms. Methods: The subjects were 90 psychiatric inpatients and outpatients with posttraumatic stress disorer(by DSM-IV criteria) after traffic accident. The severity of symptoms was assessed by MMPI subscales; depression, psychasthenia, schizophrenia. The impairment of cognitive function was assessed by Korean Wechsler Intelligence Scale(K-WAIS). Based on scores of the MMPI subscales, the patients were divided into high group(above 70 percentile) and low group(below 30 percentile). We estimated the difference of the K-WAIS score and subtest score in the low group and high group of the MMPI subscales by indedpendent t-test. Results: The scores of high group is significantly higher in the subtests of information, vocabulary, similarity, picture completion, and picture arrangement than the low group for psychasthenia subscale of MMPI. And the score of high group is significantly higher in full scale I.Q., verbal I.Q., performance I.Q., verbal subscales except digit span and simiarity, and performance subscales than low group for schiozphrenia subscale of MMPI. Conclusion: It was found cognitive function was more impaired in the group of PTSD with severe symptom compared to the group of PTSD with mild symptoms. We suggest that psychiatrist should consider various cognitive approaches as well as pharmacotherapy in the management of PTSD.

• Journal of Labour Economics
• /
• v.43 no.3
• /
• pp.33-61
• /
• 2020

The purpose of this study is to analyze the disparity in on-the-job training between regular and non-regular workers and to compare the wage effects of on-the-job training. Using the Korean micro data from the Programme for the International Assessment of Adult Competencies(PIAAC) published by OECD, Propensity Score Method(PSM) is applied to overcome the endogeneity problem. The average treatment effect(ATT) on the training participation is analyzed, using non-regular workers as treatment group and regular workers as comparison group. Odds ratios of non-regular employees' training participation compared to regular employees shows 0.67 times after constructing matching sample and this means that non-regular workers are facing a disadvantageous training opportunity compared to regular workers. In order to estimate the wage effect of on-the-job training, the average treatment effect(ATT) of on-the-job training on average wages for regular workers and non-regular workers is estimated respectively. I find insignificant wage effect from on-the-job training among regular workers and significant positive effect on non-regular worker's wage from on-the-job training.