16개 광역시,도별 서비스업 노동 생산성 수렴 및 생산성 결정 요인 분석

정영근 ( Young Keun Jeong ),박추환 ( Chu Hwan Park ) 한국생산성학회 2011 生産性論集 Vol.25 No.4

In this paper, we test the absolute and conditional convergence hypothesis by using the data of 16 metropolitan city and provinces since 2000 for confirming convergence of the regional income disparities. The results show that the absolute convergence hypothesis can be applied but the conditional convergence hypothesis cannot be applied with regional income disparities between the capital and non-capital regions. This is because regional disparities of the capital in steady state are different by applying conditional convergence. Because of the productivity divergence in service industries, regional income disparities have widened. Hence the government has to revise the balanced regional development policy to develop regional service industries rather than manufacturing industries for balanced regional development.

A Study on Convergence and Connection for the Analysis of Mathematical Learning Conditions-Focused on Mathematics Problem Solving Results of the Students

J. J. Seo,T. Kim 장전수학회 2011 Proceedings of the Jangjeon mathematical society Vol.14 No.1

In this paper, a new method of analyzing individual mathematical learning conditions has been searched based on problem solving results of students. First, if a student is able to solve infinite number of problems, the student was assumed as being able to solve finite number of problems. And the result of solving infinite number of problems and the result of solving 'minimum number of problems' have been formed to become equal. In order to make these two results equal, the number of <plane> have been set up considering number of problem solving methods dealt with in school mathematics while the method of analyzing the learning condition by students has been formed using ‘convergence’ and ‘connection’. Next, in order to visually clarify the learning condition of students expressed on the <plane>, it has been formed to be ex-pressed on the 'sphere'. The analysis method formed based on problem solving results of students is able to identify the student's learning condition of the past and the learning condition of the present in general along with the advantage of being able to identify the lacking mathematical contents or concept by each individual student in relation to the study contents to be learned in the future.

Convergence of a continuation method under majorant conditions

Shwet Nisha,P. K. Parida,Chandni Kumari 강원경기수학회 2019 한국수학논문집 Vol.27 No.4

The paper is devoted to study local convergence of a continuation method under the assumption of majorant conditions. The method is used to approximate a zero of an operator in Banach space and is of third order. It is seen that the famous Kantorovich-type and Smale-type conditions are special cases of our majorant conditions. This infers that our result is a generalized one in comparison to results based on Kantorovich-type and Smale-type conditions. Finally a number of numerical examples have been computed to show applicability of the convergence analysis.

THE CONVERGENCE BALL OF INEXACT NEWTON-LIKE METHOD IN BANACH SPACE UNDER WEAK LIPSHITZ CONDITION

Ioannis K. Argyros,Santhosh George 충청수학회 2015 충청수학회지 Vol.28 No.1

We present a local convergence analysis for inexact Newton-like method in a Banach space under weaker Lipschitz condition. The convergence ball is enlarged and the estimates on the error distances are more precise under the same computational cost as in earlier studies such as [6, 7, 11, 18]. Some special cases are considered and applications for solving nonlinear systems using the Newton-arithmetic mean method are improved with the new convergence technique.

THE CONVERGENCE BALL OF INEXACT NEWTON-LIKE METHOD IN BANACH SPACE UNDER WEAK LIPSHITZ CONDITION

Argyros, Ioannis K.,George, Santhosh Chungcheong Mathematical Society 2015 충청수학회지 Vol.28 No.1

We present a local convergence analysis for inexact Newton-like method in a Banach space under weaker Lipschitz condition. The convergence ball is enlarged and the estimates on the error distances are more precise under the same computational cost as in earlier studies such as [6, 7, 11, 18]. Some special cases are considered and applications for solving nonlinear systems using the Newton-arithmetic mean method are improved with the new convergence technique.

이산 선형 시스템에 대한 반복 학습 제어의 수렴성에 대한 연구

정구민(Gu-Min Jeong),안현식(Hyun-Sik Ahn) 대한전기학회 2006 정보 및 제어 심포지엄 논문집 Vol.2006 No.1

This note investigates the convergence condition of ADILC (iterative learning control with advanced output data) for nonminimum phase systems. ADILC has simple learning structure including both minimum phase and nonminimum phase systems. However, for nonminimum phase systems, the overall time horizon must be considered in input update law. This makes the dimension of convergence condition matrix large. In this paper, a new sufficient condition is proposed to satisfy the convergence condition. Also, it has been shown that this sufficient condition can be satisfied although it is not full impulse response.

일사에 직접 노출된 남측 벽의 열관류율 평가 시 일사의 영향과 열관류율 산정을 위한 수렴성의 분석

변지연,박소민,심지수,송두삼 대한설비공학회 2023 설비공학 논문집 Vol.35 No.3

The thermal transmittance of the building envelope greatly affects the heating and cooling load and is measured in accordance with ISO 9869-1. This method estimates the in situ U-value by measuring heat flux through the test wall and the temperature difference between the internal and external environments. Thermal transmittance can be calculated from data measured over five days under stable environmental conditions. However, if the environmental conditions are unstable, the minimum test period may be longer than 10 days to obtain reliable results. Therefore, in this method, the temperature difference between the inside and outside of the wall should be 10℃ or more, and the influence of solar radiation should be minimized. For a south-facing wall, the heat flux fluctuation is so large that it takes twice as long to be a convergence condition proposed by ISO 9869-1. This study aimed to analyze heat flow characteristics through a south-facing wall directly exposed to solar radiation and its convergence condition for thermal transmittance calculation. 본 연구에서는 열류계법(HFM)을 이용한 건물 외피의 열관류율 현장측정에서 일사의 영향이 열류, 실내외 공기온도차이, 결과적인 열관류율의 수렴성에 미치는 영향을 분석하였다. 본 논문의 결론은 다음과 같다. (1) ISO 9869-1의 측정 데이터 평균화법(average method)과 열류계법을 이용한 북측과 남측 벽의 열관류율 수렴조건을 검토한 결과, 북측 벽은 측정 개시 후 5일 만에 열관류율 수렴 조건에 도달하여 정상 상태의 열관류율을 산출할 수 있었으나 남측 벽은 측정 개시 후 10일이 소요되어서야 열관류율의 수렴 조건에 도달하였다. (2) 그 원인을 분석한 결과, 열관류율 측정 요소인 실내외 공기온도 차이는 북측 벽과 남측 벽에서 큰 차이가 나타나지 않은 반면, 남측 벽의 낮 시간의 많은 일사량의 영향으로 하루 중 남측 벽을 통한 열류가 크게 변동하는 결과를 초래하였다. 아울러 일사의 영향으로 인한 벽 표면의 온도 상승으로 남측 벽의 경우 주/야간의 열류 방향이 변동하는 결과를 보였다. (3) 남측 벽의 일사의 영향으로 인한 열류량의 불안정성이 남측 벽의 열관류율 산정을 위한 수렴조건을 만족시키는데 북측 벽에 비해 약 2배의 시간이 소요되는 결과를 초래하였다. (4) 추후 연구로는 이러한 불안정한 열류 양상을 띠는 남측 벽의 열관류율 측정 기간을 단축하기 위한 데이터 필터링 방법에 대해 검토 및 분석하고자 한다.

〈속보논문〉 이산 선형 비최소위상 시스템을 위한 반복 학습 제어의 수렴조건에 대한 연구

裵成漢(Sung-Han Bae),安鉉埴(Hyun-Sik Ahn),鄭求珉(Gu-Min Jeong) 대한전기학회 2008 전기학회논문지 Vol.57 No.1

This paper investigates the convergence condition of ADILC (iterative learning control with advanced output data) for nonminimum phase systems. ADILC has simple learning structure including both minimum phase and nonminimum phase systems. However, for nonminimum phase systems, the overall time horizon must be considered in input update law. This makes the dimension of convergence condition matrix large. In this paper, a new sufficient condition is proposed to satisfy the convergence condition. Also, it has been shown that this sufficient condition can be satisfied although it is not full impulse response.

A study on the Convergence Condition of Chaotic Dynamic Neural Networks

Sang-Hee Kim,Hua O. Wang 한국지능시스템학회 2007 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.7 No.4

This paper analyzes on the chaos characteristics of the chaotic neural networks and presents the convergence condition. Although the transient chaos of neural network sould be beneficial to overcome the local minimum problem and speed up the learning, the permanent chaotic response gives adverse effect on optimization problems and makes neural network unstable in general. This paper investigates the dynamic characteristics of the chaotic neural networks with the chaotic dynamic neuron, and presents the convergence condition for stabilizing the chaotic neural networks.

충청지역과 조건부 수렴가설

김병우 충북연구원 2009 지역정책연구 Vol.20 No.2

As evident from the results of cross-region growth equation model estimation, since the 2000 ChungNam and ChungBuk regions have grown relatively rapidly due to accumulation of physical and knowledge capital. But, the high growth effect fo DaeJeon region from high R&D intensity was offset by high rate of population growth(natural growth) Estimation results implies 1) there is “conditional convergence” in Korean rigional economy, 2) endogeneous growth model considering R&D intensity well explains the differences of growth rate between prefectures of South Korea. -