• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.94-96
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• 2004

인터넷 상의 정보에 접근하기 위해서는 IP나 URL등의 주소체계를 이용하는데, 많은 프로토콜들이 기본적으로 사이트의 접근에 초점이 맞추어져 있으며, 사이트 내 콘텐츠는 그 다음 단계에서 접근된다. URL이 너무 주소개념에 치우쳐 있어, 접근의 지속성(persistency)의 문제가 제기되어, URN의 개념이 나왔으나, 기본적으로 물리적인 수준의 정보통신을 목적으로 하였음으로 최종 이용자입장의 인터페이스는 약하다는 단점이 있다. 콘텐츠의 직접 접근을 위한 URN의 단점 을 극복하고 기존의 국제화도메인 (Internationalized Domain Name)시스템의 일반화된 형태의 콘텐츠도메인 서비스 네트워크 모델에 대해서 설명한다.

• KSCI Review
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• v.8 no.1
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• pp.29-36
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• 2001

EJB application development environment is developing component support Object-Oriented distributed processing, it is component architecture for distributed arrangement. Application developed using EJB is component coupled for business program development easily. EJB is automatically sovled to security. resource Pooling, persistency, concurrency. transaction transparency. This Paper illustrate for EJB extract to EJB sufficient flexibility its development environment, and it was applicated remote university application domain.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.439-441
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• 2000

절차지향 소프트웨어를 객체지향 소프트웨어로의 재공학은 소프트웨어 유지.보수 비용의 절감과 기존의 시스템에 새로운 요구사항을 수용하는 등 많은 장점이 있다. 본 논문은 절차지향 소프트웨어를 재공학하는 과정에서 안전한 지속성(Safe Persistency) 결정문제, 즉 객체의 생성과 생성 주기의 결정 방법을 제안하였다. 본 논문에서는 지속성 결정을 위해 다섯 단계의 모델링 과정을 제시하였으며 모델링 과정을 통해 객체의 정확한 생성과 소멸 시점을 추출하였고 정제 과정을 거침으로써 메시지 전달과 생성/소멸 과정에서 안정성과 일관성을 유지할 수 있도록 하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04a
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• pp.484-486
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• 2000

JMS(Java Message Service)는 분산된 엔터프라이즈 시스템간의 메시지 생성, 전달, 수신 및 읽기를 위한 자바 기반의 표준 API를 제공한다. 이 API의 구조는 메시징 방식에 따라 Topic을 메시지 서버로 하는 Pulish-Subcribe모델과 Queue를 서버로 기자는 Point-To-Point 모델로 구분된다. IDL/SSO는 병행성(Concurrency), 영속성(Persistency), 필터(filter)등의 기능을 제공하는 공유객체 명세언어 시스템이다. 본 논문에서는 이 IDL/SSO를 이용하여 JMS를 구현하는 방법에 대하여 기술한다.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2001.05a
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• pp.121-127
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• 2001

An unified measure of user interface efficiency and aesthetics for cyber museum is proposed. First, general structure of cyber museum is discussed and hierarchical analyses are done for sample sites. Usability tests based on the hierarchical analyses yield statistics of user access frequency and persistency for each page, on which access probability is deduced. Second, visual occupancy, a measure of efficiency of user interface element based on access probability is defined. The hierarchical statistics of visual occupancy can be an index for characterization and classification of cyber museums. Examples are provided.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1517-1520
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• 2003

Java 의 사용 영역이 일반 응용 프로그램 뿐 아니라 가정용 기기에까지 널리 사용되고 있다. 이러한 환경에서 다량의 XML 데이터를 다룰 경우 제한된 메모리를 사용을 보장하면서 객체의 지속성(persistency)를 보장하는 시스템이 필요하다. 이에 본 논문에서는 순수 Java 객체의 지속성을 보장하는 시스템인 XFS 를 구현하였다. XFS 는 쓰레드 환경에서 뛰어난 동시성을 보장하며 임의의 Java 객체의 지속성을 보장하므로 확장성이 뛰어나다. 또한 물리적 모델과 논리적 모델을 분리하여 응용 프로그램을 독립성을 증가시켰다.

• Journal of KIISE:Computing Practices and Letters
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• v.6 no.5
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• pp.468-476
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• 2000

Binding the object-oriented programming language C++ with a database management system provides a persistency to C++ programming objects so that objects can persist after program termina~,on. In such a binding system, we can manage a persistent object same as that we use a transient object and also use database management facilities such as transaction management and concurrency control. This paper presents a method providing the persistency to C++ programming objects in the binding system. We propose an improved interface based on C++ binding of ODMG-97 and present the design and implementation technique of it. The proposed interface provides a seamless interface for creating objects of the persistent capable class. We can create a persistent object without its class name as we do not give a class name when creating a transient object. Also, we guarantee the type compatibilty between the obiect created in database and the obiect created in main memory.

• Korean Journal of Environmental Agriculture
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• v.21 no.4
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• pp.286-290
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• 2002

This work has been conducted to investigate the behavior of pesticides in ginseng(Panax ginseng C. A. Meyer) cultivation environment, with a fungicide procymidone as a model pesticide. Procymidone adsorption on ginseng cultivating soil was studied and persistency of procymidone in soil was monitored in indoor incubation experiments at 25$^{\circ}C$ and 10$^{\circ}C$. The soil adsorption coefficients($K_{oc}$) of procymidone were in the range of 513$\sim$743 suggesting the mobility of procymidone in soil is relatively low. Procymidone showed higher persistency in soil under indoor incubation condition than outdoor field condition. The half lives estimated from the first order reaction kinetics were 248 days and 330 days at 25$^{\circ}C$ and 10$^{\circ}C$, respectively.

• Journal of Acupuncture Research
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• v.31 no.4
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• pp.133-141
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• 2014

Objectives : The purpose of this study is reporting to compare the preference of combustible moxibustion and electronic moxibustion. Methods : 31 patients were treated by combustible moxibustion in the morning and electronic moxibustion in the afternoon for 1 day. After they were treated by each moxibustions treatment, filled out questionnaire. We repeated the above process for 3 days. And we analyzed questionnaire statistically. Results : Heat sensitivity of electronic moxibustion has statistical significance. Sex and age have no statistical significances. Heat sensitivity and persistency of combustible moxibustion, heat persistency of electronic moxibustion also have no statistical significances. Satisfaction and smoke of moxibustion have correlation to moxibustion preference. Conclusions : Heat sensitivity of electronic moxibustion, satisfaction and smoke of moxibustion have correlation to moxibustion preference.

• Asian-Australasian Journal of Animal Sciences
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• v.19 no.7
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• pp.915-921
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• 2006

Various random regression models with different order of Legendre polynomials for permanent environmental and genetic effects were constructed to predict future milk yield of Holstein cows in Korea. A total of 257,908 test-day (TD) milk yield records from a total of 28,135 cows belonging to 1,090 herds were considered for estimating (co)variance of the random covariate coefficients using an expectation-maximization REML algorithm in an animal mixed model. The variances did not change much between the models, having different order of Legendre polynomial, but a decreasing trend was observed with increase in the order of Legendre polynomial in the model. The R-squared value of the model increased and the residual variance reduced with the increase in order of Legendre polynomial in the model. Therefore, a model with $5^{th}$ order of Legendre polynomial was considered for predicting future milk yield. For predicting the future milk yield of cows, 132,771 TD records from 28,135 cows were randomly selected from the above data by way of preceding partial TD record, and then future milk yields were estimated using incomplete records from each cow randomly retained. Results suggested that we could predict the next four months milk yield with an error deviation of 4 kg. The correlation of more than 70% between predicted and observed values was estimated for the next four months milk yield. Even using only 3 TD records of some cows, the average milk yield of Korean Holstein cows would be predicted with high accuracy if compared with observed milk yield. Persistency of each cow was estimated which might be useful for selecting the cows with higher persistency. The results of the present study suggested the use of a $5^{th}$ order Legendre polynomial to predict the future milk yield of each cow.