• Journal of Information Technology Applications and Management
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• 제28권3호
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• pp.109-125
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• 2021

For the government of president Moon's AI SW HRD policy, he proclaimed AI democracy that anyone can utilize artificial intelligence technology to spread AI education for the people of the country. Through cognitive map analysis, this study presents expected policy outcomes due to the input of policy factors to overcome crisis factors and utilize opportunity factors. According to the cognitive guidance analysis, first, the opportunity factor is recognized as accelerating the digital transformation to Covid 19 if AI SW HRD is well nurtured. Second, the crisis factor refers to the rapid paradigm shift caused by the intelligence information society, resulting in job losses in the manufacturing sector and deepening imbalance in manpower supply and demand, especially in the artificial intelligence sector. Third, the comprehensive cognitive map shows a circular process for creating an AI SW ecosystem in response to threats caused by untact caused by Corona and a circular process for securing AI talent in response to threats caused by deepening imbalance in manpower supply and demand in the AI sector. Fourth, in order to accelerate the digital circulation that has been accelerated by Corona, we found a circular process to succeed in the Korean version of digital new deal by strengthening national and corporate competitiveness through AI-utilized capacity and industrial and regional AI education. Finally, the AI utilization empowerment strengthening rotation process is the most dominant of the four mechanisms, and we also found a relatively controllable feedback loop to obtain policy outputs.

• 한국경영과학회지
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• 제3권1호
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• pp.69-73
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• 1978

This paper deals with the problem of determining the optimal inventory-transportation policy of the idealistically simple inventory-transportation system with the following assumptions: (1) The system consists of a single central warehouse and a single local warehouse, (2) The planning horizon is finite, (3) Demand rate is fixed costant, and so forth. Developed is the algorithm by which to identify the optimal inventory policy which minimizes the total cost incurred to the system over the given finite planning horizon. A sample numerical example is presented along with a discussion of the possible applications of the approach used n the algorithm.

• 보건행정학회지
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• 제24권1호
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• pp.13-23
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• 2014

Background: A need arises to efficiently control health expenditure for medical aid due to a sharp increase in medical aid expenditure. This study experimently analyzes the impact of physician behavior on medical use for medical aid beneficiaries using supplier induced demand (SID) theory. Methods: This study looks into analyze SID effect using expenditure factor analysis of medical aid for the years between 2003 and 2010 in comparison with health insurance. Moreover, this study analyzes the existence and scale of SID using econometrics modeling with panel data on 16 cities and provinces's health expenditure data for medical aid from 2003 1/4 to 2010 4/4. Results: This study finds that the growth rate of visit days per capita and treatment amount per visit days for medical aid is higher than health insurance. Furthermore, the result of econometrics modeling analysis shows the existence of SID in general hospital, hospital, clinic, oriental clinic. Conclusion: In order to efficiently control expenditure for medical aid, it is required to reinforce macro polices such as the introduction of 'target management' and micro policies such as the strengthen of management on medical institutes in the perspective of suppliers as well as regulations of demanders.

• Journal of Information Technology Applications and Management
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• 제21권4_spc호
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• pp.431-447
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• 2014

Demand of spectrum resource is tremendously increasing and this trend will continue as more IT services such as cloud computing, smart devices, Internet of Things are provided through wireless network. Recent development of spectrum sharing technology has drawn attention to spectrum policy makers as a promising way to overcome the expected spectrum shortage problem. However, technology-based solution to spectrum shortage problem may not be sustainable since the solution affect only one aspect of spectrum sharing ecosystem. To understand the whole picture of spectrum shortage problem, policies to vitalize spectrum sharing ecosystem were proposed based on the analysis of System Dynamics causal map in the previous study. This study compares and analyzes the effect of those proposed vitalization policies by using System Dynamics simulation. Among seven alternative policies, combined application of demand acceleration policy and technology development policy was found to be more effective for better utilization of spectrum. The effect of demand acceleration policy was offset when other policies are applied together except supply acceleration policy which shows better spectrum sharing.

• 대한교통학회지
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• 제35권1호
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• pp.50-62
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• 2017

자동차 기술의 발전과 보급의 증가로 자가용 승용차 이용이 대폭 증가함에 따라 교통혼잡비용의 상승 및 도로의 손상 등 수많은 도시교통문제들이 야기되고 있다. 도시교통문제를 해결하기 위한 다양한 노력들이 시도되고 있음에도 불구하고 여전히 증가하고 있는 승용차의 높은 수단분담률을 감소시키기 위해서는 강제적이며 규제적인 교통수요 억제정책보다 운전자 스스로가 합리적인 승용차 이용을 가능하게 하는 자발적인 교통수요관리정책 참여유도 기법이 절실한 시점이다. 과거에 비해 어느 정도 도시교통인프라가 정비된 현 시점에서 커뮤니케이션을 기반으로 개인의 의식변화를 통해 행동변화를 도모함으로서 합리적인 승용차이용을 유도하는 교통행동관리기법(MM)의 도입이 현 시점에서는 필요하다고 판단된다. 따라서 본 연구에서는 MM의 성공적인 도입을 위해 부산광역시 시민들을 대상으로 종전의 교통수요관리(TDM)에 대한 의식조사를 실시하여 교통행동변화에 영향을 미치는 요인에 대해 분석하고, 특히 교통행동관리를 위해 자발적으로 시민들이 승용차 이용저감에 참여하는 방안을 모색하고자 한다.

• 대한환경공학회지
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• 제30권12호
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• pp.1225-1230
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• 2008

이 논문에서는 팔당호에 행해진 수질관리 정책의 효과를 분석하기 위하여 계절 맨-켄달 경향분석법(Seasonal Mann-Kendall Trend Analysis)을 사용한 새로운 접근법으로 팔당호로 유입되는 주요 지류중 하나인 경안천의 수질을 정책 전과 후로 나누어 비교 분석하였다. 1992년부터 2005년까지 월별로 측정된 BOD, COD, 총인 및 총질소의 자료들을 이용하여 1998년 한강특별대책 시행 전과 후의 켄달 기울기(Kendall slope)를 비교하였고, 그 결과 한강특별대책이 경안천 하류의 수질 개선에는 효과가 있었으나 상류의 수질 개선에는 큰 효과를 거두지 못하였음을 밝혀냈다. 이러한 결과는 이전에 행해진 경안천 수질 관련 연구들의 결과와 잘 일치하는 것으로 보아, 이 연구에서 사용된 수질의 장기 경향 분석을 통한 정책의 효과를 판단하는 접근법은 앞으로 유용하게 사용되어 질 수 있으리라 판단된다.

• Journal of Information Technology Applications and Management
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• 제24권2호
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• pp.81-96
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• 2017

Forecasting long-term mobile service demand is inevitable to establish an effective frequency management policy despite the lack of reliability of forecast results. The statistical forecasting method has limitations in analyzing how the forecasting result changes when the scenario for various drivers such as consumer usage pattern or market structure for mobile communication service is changed. In this study, we propose a dynamic model of the mobile communication service market using system dynamics technique and forecast the future demand for long-term mobile communication subscriber based on the dynamic model, and also experiment on the change pattern of subscriber demand under various scenarios.

• Industrial Engineering and Management Systems
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• 제4권2호
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• pp.145-157
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• 2005

There are a lot of raw materials, work-in-processes and finished goods in manufacturing industry. Here, the less stock of materials and work-in-processes manufacturing industry has, the worse the rate of the production is. Inversely, the more manufacturing industry has, the more expensive the cost to support them is. Thus, it is important for us to balance them efficiently. In general, inventory problems are to decide appropriate times to produce goods and to determine appropriate quantities of goods. Therefore, inventory problems require as more useful information as possible. For example, there are demand, lead time, ordering point and so on. In this paper, we deal with an optimal ordering policy on both way substitutable two-commodity inventory control system. That is, there is a problem of how to allocate the produced two kinds of goods in a factory to m areas so as to minimize the total expected inventory cost. The demand of each area is probabilistic, and we adopt the exponential distribution as a probability density function of demand. Moreover, we provide numerical examples of the problem.

• 한국경제지리학회지
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• 제14권3호
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• pp.286-306
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• 2011

본 연구는 2008년 국가경쟁력강화위원회의 발표를 필두로 현 정부가 추진하고 있는 수도권정책의 변화의 방향과 그 영향을 고찰하기 위하여 수도권정책의 변화에 민감하게 반응하는 기업의 공간수요 변화를 분석하였다. 연구내용은 수도권 정책이 기업의 입지에 미치는 영향을 살펴보고 현 정부의 수도권 규제완화 정책에 따른 기업들의 입지행태 변화 및 공간수요의 변화방향을 분석한다. 연구방법은 실증분석과 설문분석을 활용하였다. 실증분석은 1980년대 이후 통계자료를 활용하여 제조업체의 공간수요 변화추이를 분석하였다. 설문분석은 외생적 충격인 수도권 정책 변화가 기업체의 의사결정에 미치는 영향을 고찰하여 향후 기업들의 제조업용지 수요방향을 도출하였다. 연구결과 기업체들은 그동안 수도권정책으로 인하여 기업입지 결정이나 공장규모결정에 영향을 많이 받았으며 가장 큰 규제정책은 수도권정비계획법상의 권역규제와 공장총량제인 것으로 조사된다. 현 정부의 수도권규제완화로 인하여 제조업용지 수요증가가 예상된다. 특히 수도권과 충청권을 중심으로 제조업용지 수요가 증가될 것이며 강원도는 수요감소가 전망된다. 이는 수도권지역이 우리나라 중에서 가장 교통 물류 조건과 시장조건이 양호한 지역이므로 이 지역에 대한 기업선호도가 높은 까닭이다. 그러나 독자적인 경제권을 형성하고 있는 동남권이나 대경권의 경우 수도권 정책변화로 인한 영향력이 적다. 수도권지역 경우도 전체 지역에서 수요가 증가하는 것이 아니라 성장관리권역에서의 수요증가가 예상된다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2007년도 추계학술대회 및 정기총회
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• pp.190-194
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• 2007

In most countries, mobile subscribers are already experiencing 3G-like services. At the moment of launching 3G services, lots of studies showed estimates of the number of subscribers for 3G services, using long-term demand curves, econometric methods or survey methodologies. Those studies mainly focused on the potential number of subscribers and the point of rapid growth rather than precise estimates for the services. Even though we've already experienced parts of 3G services, full length of 3G services are expecting in near future. Therefore, now we need to have more accurate estimates for 3G services. While we thought that 3G services were moved from 2G, in real place 3G services are being evolved from 2G services. In the process of evolving, regulators' policy affects service demand and diffusion significantly. For the more accurate estimates, we need to consider policy issues which influence service diffusion practically in real place. This study aims to present a model which shows better estimates for 3G services with consideration on policy issues, such as numbering issues, price regulation, and competition policy. The consideration can provide more accurate estimates for 3G services with service providers. The methodology could help academicians In forecasting of similar telecommunications services as well.