스프라인 곡선을 이용한 내용기반 이미지 검색 시스템을 위한 모양 유사도

안철웅,김대영 啓明專門大學 産業開發硏究所 2002 啓明硏究論叢 Vol.20 No.1

본 논문에서는 모양특징을 사용하여 이미지를 검색하기 위한 유사도 측정에 관하여 논한다. 개체의 모양은 이미지에 있는 개체의 외곽선을 추출함으로서 얻어낼 수 있다. 이미지에 있는 각각의 개체는 수동으로 외곽선을 추출하게된다. 외곽선은 큐빅 스프라인 곡선을 사용하여 근사시키고. 특징벡터는 자동으로 추출한다. 각 개체의 모양 특징은 특징 데이터베이스에 추가되어 이미지 검색시 사용한다. 사용자가 그린 스케치 질의도 큐빅 스프라인 곡선을 사용하여 근사시키고, 특징벡터를 추출한다. 이미지의 검색시 사용자 스케치 질의의 특징백터와 이미지 데이터베이스에 있는 개체의 특징벡터와 비교하여 검색결과를 결정하게 된다. 본 논문에서는 개체의 모양 유사도를 측정할 수 있는 측도를 고안하였고 이것을 실험하였다. 실험결과 본 논문에서 제안하는 모양 유사도 측도가 유효함을 알 수 있었다. In this paper, we present a similarity measure for retrieving images based on object shape features. Shapes are derived by extracting the contour of relevant object represented in the images. For each object in the images, its contour lines are manually extracted and sampled at points, Its 2-D contours are approximated by parametric cubic spline curves and its shape feature vectors are automatically extracted. The object shape features are appended to feature DB and used during the image retrieval process. User sketch query is also approximated by parametric cubic spline curves, its shape features are extracted. During the image retrieval process, the shape features of user sketch query are compared with those of image DB using our similarity measure to determine the set of candidate images to be retrieved. We designed and experimented our shape similarity measure. Experimental result shows that our proposed similarity measure is effective one.

활동기준원가회계의 유용성 제고에 관한 소고

전웅철 진주여자전문대학 1997 論文集 Vol.20 No.-

The disadvantages of traditional costing systems(TCS) used in manufacturing firms have recently attracted considerable attention : TCS provide little information on the sources of competitive advantage. In contrast, activity-based costing(ABC) is a costing technology that provides information for continuous improvement in manufacturing. ABC traces costs to products according to the activities performed on them. The results are that it provides accurate cost information, and then helps managers to make better decisions about product design, pricing, marketing, and mix and encourages continual improvement. In spite of these advantages, ABC may have some limitations influencing on its usefulness. In this study, the limitations imply the view points of ABC assumptions, adoption and implementation, and empirical researches Two assumptions underlying ABC are homogeneity and proportionality. The first assumption, homogeneity, means that the costs in each pool are driven by a single activity or by highly correlated activities, and the second assumption, proportionality. means that all costs in the cost pool should vary proportionally with changes in the activity level. Violating its assumptions, ABC may not produce better cost data than TCS. Accordingly, two of these assumptions must be evaluated using regression analysis, which can be performed readily on a personal computer with statistical software. It is a good idea to carry out this evaluation before using ABC as relevant costing system. Finally, the limitations of the rest may be reduced by cooperating, and communicating among organizational person.

자외선 소독과 소독설비

염철민,조순행,정해웅,윤제용 대한상하수도학회 2002 상하수도학회지 Vol.16 No.2

응급실내에서 발생한 폭력의 실태

최웅지,조남수,조수형,김성중,박광철,박진실 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Background and Objectives: The objective of this study was to obtain circumstances about violence providers and cause of the violence in emergency room. Materials and Methods: Reports were provided to emergency department doctors, nurses and emergency medical technicians working in Chosun University Hospital Emergency Center during the sixty days from 26 May 2003 to 24 July 2003. Report form consisted of the degree of violence, the reason for the violence, dermographic information about violence providers, outbreak time of violence and response of emergency personnels. Results: SixtyUeight case of violence in the emergency department were reported. Almost all of the violence was due to the male gender and high incidence in third and fourth decade. The violence occured mostly in the night shift. 55.9% of violence was done by patient and 41.2% was done by patient's guardians. The leading cause of violence were alcohol drunken and delay of laboratory test and treatment. Verbal abuse and threats were the most concern form of violence, Conclusion: It is necessary to solve the problems faced in the emergency department not only administrative and financial aid but also regular preventive education and further study.

效率的 豫算統制시스템 運用에 관한 小考

全雄哲 진주여자전문대학 1996 論文集 Vol.19 No.-

Budgeting ofen produces strong reactions from employees. Some managers use budgets in such a way that employees perceive the budgets as a means of squeezing the last unit of productivity out of them, or merely as a means of identifying the poor performers. Therefore, budgeting has not always the positive aspects of human behavior. Another important motivational aspect of budgeting is related to managements recognition that supporting for the budget must be maintained at all of the organizational levels. These viewpoints imply that budgeting has organizational and behavioral effect. The purpose of this study is to propose the device relating to efficient budgetary system, and the main contents are followings. ① the implication of motivation related to budgeting ② the organizational and behavioral aspects of budgetary control ③ the presentation of device relating to efficient budgetary system Some researchers have argued that previous accounting studies on budgetary motivation and the generally accepted principles of responsibility accounting are consistent with the expectancy mode1,on the other hand, that relation between motivation and budgetary control is negative(-). It recognizes that these results are derived from different business conditions. Conclusively, the efficient budgetary systems imply that budgets are adapted and developed to be contingent to business conditions.

投資中心點의 投資收益率 調整方案에 관한 小考

全雄哲 진주여자전문대학 1993 論文集 Vol.16 No.-

The standards of performance evaluation in investment center are thought as return on investment(ROI) and residual income(RI). However ROI is preferred to RI, for some reasons, in practice, it still has some problems as follows. 1) The most serious undesirable effect of using ROI is that it can discourage managers of division with high rates of return from making new investments. 2) Under most ROI measures, new investments that will eventually yield satis-factory returns earn a law return at the outset. This occurs because new assets are initially included in the investment base at cost (gross book value). 3) Although the concept of return on investment is widely understood, the return on investment as calculated by the divisional measurement system is not. Accordingly, this study introduces a structure of calculation in order to mitigate dysfunctional effect in the goal congruence (the most serious undesirable effect of using ROI) The structure of calculation as follows. · budgetary ROI × budgetary investment=budgetary income-A · budgetary ROI × actual investment=computed income-B · actual ROI × actual investment=actual income-C Here, "A-B" is investment variance, "B-C" is ROI valiance, and "A- C" is total variance. In accordance with the calculation structure above, the dysfunctional avoidance of investment may be controlled by recomputing ROI for performance evaluation. If "A-B becomes "+" by avoiding investment only, then ROI for performance evaluation is adjusted "-" Conversely, If "A-B" becomes "-"by investing more than budget, then the ROI is adjusted "+". Hower this adjustment method may be applied to control the dysfunctional effect in the goal congruence, it is the limitation of this study that the other problems of using ROI still exist.

분석전자현미경을 이용한 Invar 합금의 저온 상변화 연구

양철웅 成均館大學校 科學技術硏究所 1998 論文集 Vol.49 No.2

The low-temperature phase transformations occurring in the invar alloys can be understood by investigating microstructure and microchemistry of the meteoritic metal which is basically an Fe-Ni alloy. At the invar composition (Fe-36Ni), meteoritic metal contains a cloudy zone structure composed of an island region (high Ni ordered FeNi with low Ni precipitates) and a surrounding honeycomb region (low Ni single phase martensite). The low-temperature Fe-Ni phase diagram has been assessed experimentally by investigating Fe-Ni regions of meteorites using high resolution analytical electron microscopy techniques. The microstructural development of the cloudy zone can be understood by application of the Fe-Ni phase diagram. At low temperatures below 400℃, metastable phase transformations such as spinodal decomposition, ordering reaction, precipitation and martensitic transformation occur and form metastable phases in the parent γ -fcc phase.

구륜 이동 로봇의 위치추정을 위한 퍼지-유전자 제어기

한철웅,김종수,류평,오금곤,박세승 조선대학교 전자정보통신연구소 2000 電子情報通信硏究所論文誌 Vol.3 No.1

지능제어 기법중 하나인 퍼지-유전자 알고리즘은 매개변수 불확실성을 갖는 시스템을 제어하기 위한 새로운 제어 기법으로 사용되어지고 있다. 유전자 알고리즘에서, 돌연변이율은 국부적 최소화에 수렴하는 것을 방지하기 위하여 크게 설정하여야만 하지만, 전역 수렴 속도가 감소하는 문제점을 가지고 있다. 이러한 문제점을 개선하기 위하여 퍼지 논리와 유전자 알고리즘을 사용하여 제어기를 설계한다. 본 논문에서는 구륜이동 로봇의 목적궤적을 추적할 수 있는 제어기 설계를 제안한다. 제안된 제어기의 유용성은 모의실험을 통하여 보인다. Genetic algorithms, one of intelligent control methods, is used as new control approach to control the system including the parameter uncertainties In the genetic algorithm, the mutation rate must be set to high to prevent the convergence to local minimum, but it has the problem that the global convergence speed is decreased To enhance this problem, we design the controller by using the fuzzy logic and the genetic algorithm In this paper, we propose the controller design to track to the desired trajectory of the wheeled-mobile robot The validity of the proposed controller is showed through the simulation.

物價變動하에서의 會計責任에 대한 考察

全雄哲 진주여자전문대학 1994 論文集 Vol.17 No.-

Under a historical cost based system of accounting,inflation leads to two basic problems. First,many of the historical numbers appearing on financial statements are not economically relevant because prices have changed since they were incurred. This is, of course, the problems of representational faithfulness as an element of the primary quality of reliability. Second, since the numbers on financial statements represent a monetary amounts expended at different points of time and, in turn, embodying different amounts of purchasing power, they are simply not additive. Because of these two problems, several aspects of the revance quality are badly impaired under historical costing and, in turn, uses of financial reporting for accounting responsibility are similarly inhibited owing to its shortcomings. Accordingly, the purpose of this study is to examine proplems of accounting responsibility owing to changing prices and, to present improvements for its. Therefore, this study recognizes accounting responsibility relying on the institutional functions of accounting and executive problems of accounting functions by changing prices then improvements for those are presented. The presentations of concrete devices is difficult because of disagreement for terms, concepts, and practice of inflation accounting model. Accordingly, the results of this study presents the direction of improvement as follows 1) General price level-inflation accounting easy to restate and objective must be applied from the viewpoint of the institutional accounting and accounting environment. 2) The revisions and creations of the accounting standards, rules and the laws related must be provided for the useful accounting institution.

웹기반ERP구축 전략 및 솔루션에 관한 연구

한철웅,박세승 조선대학교 전자정보통신연구소 2000 電子情報通信硏究所論文誌 Vol.3 No.1

In this paper we study on the high-technology product sales method of the internet shopping mall and the combined control strategy of the key industry ERP which have price competition And we propose the web-based ERP system which is accrued by new earning model creation contacted with other new internet technology and a variety of information system to develop information system standardization activity of the dot.coms and small-sized enterprises, and information technology