노이즈 편집을 이용한 그래픽스 객체 편집

윤종철,이인권,최정주,Yoon Jong-Chul,Lee In-Kwon,Choi Jung-Ju 한국정보과학회 2005 정보과학회논문지 : 시스템 및 이론 Vol.32 No.11

Noise is used to create realistic animations that look like natural phenomena as well as procedural textures and shapes by adding randomness to graphical applications. In this paper, we suggest a method to edit noise values to satisfy the constraints that reflect the user's demands while maintaining the inherent statistical features of the noise function. Noise editing uses optimization to minimize the difference between the statistical characteristics of the ideal and edited versions of a noise source. Using our editing method, detailed control of animation and shape data that include noise is possible. 노이즈 함수는 난수의 추가를 통해 실제 자연현상에 대한 애니메이션을 더욱 더 실감나게 하는 방법으로 쓰여 왔다. 본 연구에서는 노이즈의 통계적 특징은 보존하면서, 사용자가 원하는 제약에 맞는 결과 값을 산출하는 방법을 제시한다. 이상적 형태의 통계 값과, 실제 노이즈 함수의 편향치의 통계 값의 차이를 최소화 하는 최적화 기법을 통해 노이즈의 성질을 유지하면서 손쉽게 제어를 할 수 있는 방법을 제안하고자 한다. 이 방법을 통해 노이즈가 적용된 애니메이션이나 모양에 대한 세부적인 제어가 가능하다.

The Accounting Quality of Firms that Voluntarily Adopted Audit Committee

윤종철 한국로고스경영학회 2020 로고스경영연구 Vol.18 No.2

This study examines the difference in accounting quality between companies that voluntarily introduced the Audit Committee and those that did not. The explanatory variable is the voluntary introduction of the audit committee. As the dependent variable, accounting quality measured by the quality of accruals was used. In the additional analysis, whether or not to correct the business report, which is a direct measurement, was used as a dependent variable. The period of analysis is from 2000 to 2012. Among the companies listed on the stock market, the analysis was conducted on 1010 firm-year data that can identify accounting quality among companies that introduced the Audit Committee. As a result of the analysis, the accounting quality measured by the quality of accruals increases for companies that voluntarily introduce the Audit Committee. This can be interpreted as a high degree of information transparency of companies that voluntarily introduced the Audit Committee. In the additional analysis, it was found that companies that voluntarily introduced the Audit Committee had a negative effect on the revision of the business report. When the Audit Committee was voluntarily introduced, it was interpreted as reducing the correction of the business report by reducing the possibility of errors related to the disclosure of the business report. On the other hand, when interpreting the analysis results, it is necessary to take into account the effect of the asset scale of the sample.

식도암의 방사선 치료

윤종철,손승창,서현숙 인제대학교 1985 仁濟醫學 Vol.6 No.4

저자들은 1983년 10월부터 1985년 5월까지 인제의과대학 서울백병원 치료방사선과에서 근치적 목적으로 치료한 17명의 식도암 환자에 대해서 연구 분석해 보았다. 평균 방사선 조사량은 5,240rad였고 치료한 17명 모두에서 추적조사가 가능하였고 최소 추적 기간은 6 개월이었다. 처음 진단시 원발병소별로 보면 제 1기가 2명, 제 2기가 명, 그리고 제 3기가 7명이었다. 제 1기 환자의 평균 생존 기간은 16.5개월이었고 제 2기는 11개월, 그리고 제 3기에서는 5.5개월이었다. 방사선 치료 후 증상 완화는 94%(16/17)에서 얻을 수 있었으나 방사선 치료 후 3개월 경 부터는 증상이 다시 재발되는 경향을 보였다. 평균 생존 기간에 대해서 살펴보면 TDF(Time Dose Fractionation)가 80 이상일 때 TDF 80 이하보다 더 나은 평균 생존 기간을 보였고 또한 방사선 치료 중이나 치료 후에 체중 감소가 적은 환자에서 더 오랜 평균 생존 기간을 나타내었다. 방사선 치료중 혹은 치료 후의 합병증은 기도식도천공(2명), 기도폐색(1명), 방사선폐염(1명), 그리고 대상포진(3명)이었다. This is a retrospective analysis of 17 patients with carcinoma of esophagus treated with curative radiation therapy at Seoul Paik Hospital between October 1983 and May 1985. The mean primary tumor dose was 5240 rad, There is a minimum 6 months follow up. Stage of primary lesion at diagnosia was stage 1,2 patients: stage 11, 8 patients: stage 111, 7 patients. Mean survival time for stage 1 was 16.5 months: stage 11,7 months; stage 111, 5.5 months. Palliation of symptom was achieved in a majority of patients; 94% of patients had disappearance of symptom but relapse appeared to occur after 3 months of radiotherapy. Superior results for mean survival time was achieved with more than 80 TDF (Time-Dose-Fractionation) and less weight loss during radiation. Complication during or after radiotherapy was tracheoesophageal fistula (2 patients), tracheal obstruction (1 patient), radiation penumonitis (1 patient), and herpes zoster (3 patients).

Impact of Shale Oil Supply Shock on US Crude Oil and Gasoline Prices

윤종철,김준,제상영 한국산업경제학회 2018 산업경제연구 Vol.31 No.4

This paper examines the effect of shale oil production on US energy market. According to an efficient market hypothesis, the increasing crude oil supply due to shale oil production affects gasoline supply and lowers gasoline prices. However, previous studies have explained that shale oil supply shock does not extend to gasoline. Therefore, we estimate the effect of shale oil supply on oil price and gasoline price using VECM. The result of the analysis, in the United States, since the crude oil supply and inventory increase due to increasing shale oil production and crude oil export ban, the effect of shale oil for oil prices has increased. In addition, as shale oil production increased, the effect of gasoline inventory for gasoline prices decreases and the impact of self-shock on gasoline prices increases. In other words, shale oil affects the oil prices but does not affect the gasoline prices.

Distribution Characteristics of Natural Radioactive Materials in Spring water of Seoul

윤종철,이지영,조혜윤,김예슬,이목영 환경독성보건학회 2019 한국독성학회 심포지움 및 학술발표회 Vol.2019 No.10

비재무적 성과측정치의 톱니현상에 관한 연구

윤종철,김순화 한국세무회계학회 2022 세무회계연구 Vol.- No.72

[Purpose]This study empirically examined whether ratcheting exists in non-financial performance measures that affect the goal setting. In addition, this study examined the effect of monitoring incentives on ratcheting of non-financial performance measures on the performance evaluation cycle. [Methodology]This study performed a regression analysis using actual business performance evaluation data from 2014 to 2017 of branch offices of public institutions. The non-financial performance measure used in the study was customer satisfaction. [Findings]First, in the performance evaluation, it was found that even in the case of non-financial performance measures, ratcheting that affects goal setting exists. In addition, it was found that the degree of increase in the next target when the target was exceeded in the current period was smaller than the degree of decrease in the target when the target was less than the target in the current year. This was interpreted as a ratcheting effect in performance evaluation using non-financial performance measures. Second, in the non-financial performance measurement, it was found that the location of the branch in the city and the high proportion of the branch’s revenue had a negative effect on the setting of the next target as a monitoring incentive. This was interpreted as a decrease in ratcheting in the next goal setting when the evaluator’s monitoring is strong. [Implications]This study is significant as a study in that it empirically analyzes the effects of ratcheting and monitoring on the next goal setting in the performance management system using non-financial performance measures. In addition, it can be practically used in that it provided a basis for preparing control measures according to the characteristics of performance evaluation indicators by identifying the behavioral incentives of evaluators in performance evaluation using non-financial performance measures.

개인휴대 단말기의 임피던스 , 이득 , 복사패턴에 관한 연구 ( A Study on the Impedance , Gain , and Radiation Patterns for a Hand-Held Transceiver )

윤종철,최재훈 대한전자공학회 1997 대한전자공학회 학술대회 Vol.1997 No.11

증산도(甑山道) 신자들의 정체성 형성과정에 대한 연구

윤종철 西江大學校 宗敎硏究所 2002 韓國宗敎硏究 Vol.4 No.-

순간 주파수의 통계적 응용 가능성

윤종철,제상영 한국산업경제학회 2015 한국산업경제학회 정기학술발표대회 논문집 Vol.2015 No.12

충북지역 수출산업과 노동시장의 장단기적 관계 분석

윤종철,제상영 한국자료분석학회 2016 Journal of the Korean Data Analysis Society Vol.18 No.4

고용 및 실업의 문제는 개인의 주된 생계수단인 근로소득에 직접 영향을 줄 뿐만 아니라 지속적인 경제성장과도 밀접한 관련이 있으므로 실업률의 관리를 통한 노동시장의 안정은 경제정책의 주요 목표 중 하나였다. 그러나 최근 급증하는 실망실업자, 구직단념자, 청년실업자로 인해 실업률만으로는 노동시장을 파악할 수 없다는 비판이 지속되어 왔다. 이에 따라 정부는 2017년까지 고용률 70% 달성을 정책 목표로 여성·청년 등 비경제활동인구의 고용제고와 일자리 창출 등을 세부과제로 선정하여 고용률 제고를 위한 노력을 경주하고 있다. 이러한 정부 정책에 호응하여 각 지자체에서는 자체적인 고용정책을 수립하여 집행하고 있다. 그러나 국가단위의 정책은 지역간 이질적인 노동시장과 불완전한 노동이동을 고려하기 어렵기 때문에 정책의 성공적인 집행을 위해서는 지역고유의 노동시장의 특성을 분석할 필요가 있다. 충북지역의 경우 관측기간 동안 제조업의 비중이 다른 지역보다 10%p 정도 높으며, 제조업 중에서도 수출 주력산업인 전자부품, 컴퓨터, 화학, 의약품과 같은 산업의 비중 역시 다른 지역보다 10%p 높다. 본 논문에서는 이러한 지역적 특징을 기초로 비관측 요소 모형과 경험적 모드 분해법을 이용하여 단기적 경기변동과 장기적 구조변화를 추출한 뒤 이를 분석하여 정책적 시사점을 제공하고자 한다. Problems of employment and unemployment are closely related with sustained economic growth not only directly affect the earned income of individuals. So, stable management in the labor market with the unemployment rate was one of the main objectives of economic policy. However, due to the recent surge in disappointing unemployment, youth unemployment has continued to criticize the labor market alone can not determine the unemployment rate. As a result, the government is racing to try to achieve the 70% employment rate. Selected as a policy objective, such as youth and women employment and job creation, improvement of the economically active population by 2017, including detailed tasks. In response to this government policy, each municipality may establish and enforce their employment policy. However, the national policy, it is hard to consider the incomplete inter-regional labor mobility and heterogeneous labor market. For successful execution of the policy, it is necessary to analyze specific characteristics of the labor market areas. In the case of Chungbuk Province during the observation period, the share of manufacturing approximately 10% p higher than in other regions. The main export industry of electronic components, computer, chemical, and pharmaceutical industries, the proportion of 10% p among manufacturers also higher than in other regions. In this paper, after the extraction of the long-term structural change and short-term economic fluctuations using unobserved component model and the empirical mode decomposition based on these local features to analyze it and to provide policy implications.