• 한국조경학회지
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• 제17권1호
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• pp.29-42
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• 1989

도시공원의 합리적인 유지관리를 위해서는 계획 및 설계단계에서 관리체계 및 비용의 주의깊은 분석이 요구된다. 공원의 유지관리문제를 계획 및 설계단계에서 고려하여 처리할 수 있는 방법론이 개발되어짐으로써 보다 합리적인 계획 및 설계가 이루어 짐과 동시에 이상적인 유지관리가 행해 질 것으로 예상된다. 본 연구에서는 Columbus시의 도시공원을 Sampling 하여 유지관리비용(maintenance cost)을 분석하고 계획 및 설계단계에서 유지관리비용을 줄일 수 있는 한 시도로써 Simulation Model을 개발해 보았다. 앞으로 컴퓨터 정보교환체계(Interactive computer information system)를 적절히 활용한다면 도시공원계획 및 유지 관리에 보다 큰 발전이 예상된다. 이와같은 연구를 보다 발전시키기 위해 1)상세한 유지관리비용의 분석, 2) 관리비용을 절감시킬수 있는 설계기준(Criteria)의 설정, 3)계획·설계·관리를 연결시킬 수 있는 컴퓨터 정보교환체계(Interactive computer Information system)의 개발등이 더욱 연구되야 할 것으로 생각된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 B
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• pp.974-976
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• 1995

Segmentation of image data is an important problem in computer vision, remote sensing, and image analysis. Most objects in the real world have textured surfaces. Segmentation based on texture information is possible even if there are no apparent intensity edges between the different regions. There are many existing methods for texture segmentation and classification, based on different types of statistics that can be obtained from the gray-level images. In this paper, we use a neural network model --- ART-2 (Adaptive Resonance Theory) for textures in an image, proposed by Carpenter and Grossberg. In our experiments, we use Walsh matrix as feature value for textured image.

• 한국가구학회지
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• 제14권2호
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• pp.53-61
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• 2003

Wharton Esherick (1887-1970) is the pioneer of the Studio Furniture movement which was emerging after the Second World War in the United States. As Esherick began to work on his studio at Paoli, Pennsylvania from 1926, he became enormously influential in the Stuido Furniture movement until his death in 1972. He was connecting the English Arts and Crafts ideal to the post-war craft revival. As the work of William Morris did, in the period of consumerism Esherick's furniture gave a chance to purchase unique furniture to people who wanted a different taste. Not only his furniture is unique and hand-crafted also has sculptural quality which made his followers to see furniture as a different possibilities. His work was influential to the people who followed him after the war such as Arthur Carpenter, Wendell Castle, and Sam Maloof. In the roots of the craft revival, it is hard to underestimate the contribution of Esherick's notion of sculptural furniture.

• 대한수학교육학회지:수학교육학연구
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• 제14권4호
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• pp.421-434
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• 2004

Cognitively Guided Instruction (CGI) is one of the most successful professional development programs for elementary mathematics teachers in US. This article introduces its theoretical background, research-based framework of addition and subtraction work, and how the program has been disseminated. Carpenter and Fennema started CGI aiming to develop a professional development program that focused on research knowledge of children"s thinking. Their goal was. to bring a significant change in teaching by helping teachers understand how children think mathematically. This 3-year NSF funded project grew to be 11-year long, and a number of publications have reported consistent successful learning and teaching by CGI students and teachers compared to counterparts throughout US. CGI′s success by focusing on improving teachers′ knowledge of children′s thinking offers possible opportunities for teacher educators to re-conceptualize teacher education in Korea.

• Journal of Chest Surgery
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• 제33권2호
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• pp.160-166
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• 2000

Background: The purpose of this study is to evaluate and analyze the surgical results in patients undergoing operations for multiple for multiple valvular heart diseases. Material and method: From April 1982 to June 1997 multiple valve replacement was performed in 150 patients mitral and aortic valve replacement were done in 135 patients mitral and tricuspid valve replacements in 10 patients triple replacements in 4 patients and aortic and tricuspid valve replacement in 1 patient. Of the valves implanted 157 were St. Jude 104 Duromedics 20 Carpenter-Edwards 6 Bjork-Shiley 6 Ionescu-Shiley and 2 Medtronics. Result: The hospital mortality rate was 10.7% (16/150) and the late mortality rate was 7.2% (8/134) The mortality rate was high in early operative period but decreased with time. The causes of death were low cardiac output in 9 sudden death in 3 congestive heart failure in 3 bleeding in 2 cerebral thrombosis in 1 leukemia in 1 multiorgan failure in 1 and so on . The actuarial survival rate excluding operative death was 83.1% at 15 years. Conclusion: With a follow-up now extending to 15 years the multiple valve replacement continues to be reliable procedure with relatively low mortality and morbidity.

• Animal Systematics, Evolution and Diversity
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• 제25권3호
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• pp.237-242
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• 2009

The first zoeas of Chinese ditch prawn Palaemon gravieri (Yu, 1930) and carpenter shrimp Palaemon serrifer (Stimpson, 1860) are described and illustrated in detail based on laboratory-hatched material. They are distinguished from those of Palaemon ortmanni (Rathbun, 1902) and Palaemon pacificus (Stimpson, 1860), previously known larvae from Korean waters by the length of the rostrum and endopod of antenna, the shape of the third abdominal somite, and ornamentation of the fifth abdominal somite. Larval characters of the genus Palaemon are revised. A. provisional key to the known first zoeas of Palaemon from Korean waters is given.

• Asia pacific journal of information systems
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• 제11권4호
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• pp.27-41
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• 2001

CRM is at the core of any customer-focused business strategy and includes the people, processes, and technology questions associated with marketing, sales, and service. In today's hyper-competitive world, organizations looking to implement successful CRM strategies need to focus on a common view of the customer using integrated information systems and contact center implementations that allow the customer to communicate via any desired communication channel. A CRM solution contains a number of sophisticated tools that enable to extract detailed information about customers. This information can be used to gain a better understanding of customers. From this we can determine trends, and so refine business toward customers' needs and target new products to particular customer groups. This paper presents an approach for forming the product-customer groups using neural networks for customer relationship management. The Carpenter-Grossberg's neural network, which has been used for manufacturing cell formation in group technology, is modified and applied for product-customer group formation. As a result of numerical experiments, it is also useful for more complex problems in which customers have different preferences for each product.

• 한국해안·해양공학회논문집
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• 제21권6호
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• pp.470-479
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• 2009

파에 의한 국부세굴은 하상재료의 지질학적 특성과 해저 하상의 유동은 물론, 수리학적 조건에 의해서도 영향을 받게되는 매우 복잡한 종합적 과정으로 생각할 수 있다. 지금까지의 대부분의 연구는 세굴심을 중점 대상으로 하였으나 전체 국부 세굴량 산정에 있어서 세굴 폭과의 관련성은 상대적으로 미미하게 다루어져왔다. 많은 국부세굴 영향인자 중에서도 파의 크기 혹은 해저 바닥에서의 유속은 국부세굴의 직접적인 원인으로서 작용하며, 이를 포함하는 Ursell 수나 KC 수 등의 무차원 매개변수는 세굴 영역과의 상관성 분석을 통해 세굴심이나 세굴폭을 예측할 수 있는 수단이 될 수 있다. 본 논문에서는 이러한 무차원 매개변수와 세굴 폭과의 관계를 규명하기 위해, 관경, 파고, 주기를 변화시키며 실험을 수행 및 분석하였다. 그 결과, Re 수나 주기 매개변수 등은 국부세굴 폭과 큰 분산을 보인 반면에 shields 수와 KC 수, Ursell 수는 좋은 상관성을 나타내었다. 특히 shields 수는 세굴심에 큰 영향을 주지 못하는 반면 세굴 폭과는 밀접한 관계를 보이고 있다.

• Architectural research
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• 제16권2호
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• pp.45-56
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• 2014

The objective of this article, positively recognizing existing researches, is to revisit some aspects regarding the Vāstupuruṣamaṇḍala with a square grid work which is a fundamental planning guideline to control the construction of a Hindu temple and a mathematical doctrine to lead ritual programs. Hence, this paper suggests some reservations as to certain details such as temple constructions. In order to lay hold on its meaning, this paper touches upon the specific matters about the Vāstupuruṣamaṇḍala in the building construction of Hindu temples, which set out to shed light on four concerns; first, it explores the formation process of the Vāstupuruṣamaṇḍala in concert with the evolution of Hindu temples over time; second, it considers differences and similarities in comparison with other texts intimately articulated with the construction of temples, and then understands the relationship between their local languages and applications to the Vāstupuruṣamaṇḍala; third, it examines the symbolic and sanctified process of the temple's construction on the Vāstupuruṣamaṇḍala grids with two- or three-dimensional computer graphics (by means of the Auto Cad and Rhino tools), invisibly situating the divinities within it and illuminating the roles of ornamentation in the structural terms of temples; fourth, it presents that there are another rules on the building construction based upon architect-priest's craftsmanship skilled as a stonemason or a carpenter in the manual processes of the temples' construction for proper measurements and truncations of stone and wood closely linked together structural stability of completed temples. In conclusion, proceeding from what has been said above, this thesis shows that the Vāstupuruṣamaṇḍala grid includes both practical and spiritual meanings to construct a Hindu temple.

• 한국전산유체공학회지
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• 제17권1호
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• pp.44-53
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• 2012

Immersed boundary method(IBM) is a numerical scheme proposed to simulate flow field around complex objectives using simple Cartesian grid system. In the previous studies, the IBM has mostly been implemented to fractional step method based Navier-Stokes solvers. In this study, we implement the IBM to an incompressible Navier-Stokes solver which uses SIMPLE algorithm. The weight coefficients of the bi-linear and quadratic interpolation equations were formulated by using only geometric information of boundary to reconstruct velocities near IB. Flow around 2D circular cylinder at Re=40 and 100 was solved by using these formulations. It was found that the pressure buildup was not observed even when the bi-linear interpolation was adopted. The use of quadratic interpolation made the predicted aerodynamic forces in good agreement with those of previous studies. For an analysis of moving boundary, we smulated an oscillating circular cylinder with Re=100 and KC(Keulegan-Carpenter) number of 5. The predicted flow fields were compared with experimental data and they also showed good agreements.