• 한국도로학회:학술대회논문집
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• 한국도로학회 2009년도 추계학술대회 논문집
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• pp.297-302
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• 2009

• 한국시뮬레이션학회논문지
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• 제25권4호
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• pp.13-20
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• 2016

마이크로시뮬레이션 모델은 거시적 수준의 인구, 사회, 경제 변화를 각 개인과 가구 단위의 미시적 수준의 사건들로부터 기술하고자 하는 것을 목적으로 하며, 최근 OECD 국가들을 중심으로 정책 시뮬레이션 도구로서 많은 관심을 받고 있다. 마이크로시뮬레이션 모델의 활용도를 높이기 위해서는 해당 국가의 인구 구조를 잘 반영하는 인구 데이터가 필요한데, 우리는 반복비례갱신 (iterative proportional updating) 방법을 이용하여 한국 가상 인구를 생성하였다. 생성된 가상 인구 데이터의 검증을 위하여 인구센서스 집계 결과와의 오차를 계산하였으며, 가구와 인구 모두에 대해서 실제 집계 결과와 작은 오차를 보이는 것을 확인하였다.

• 교통기술과정책
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• 제6권2호
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• pp.114-123
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• 2009

• 교통기술과정책
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• 제1권1호
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• pp.123-126
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• 2004

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.155-163
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• 2021

The study aims to investigate the effect on Philippine occupational choice of House Bill No.7787, also known as the National Wage Law, which was filled by the Philippine Congress that mandates the implementation of an across the board minimum daily wage of Php750.00 to all workers in the Philippines. This study had used the Computable General Equilibrium-Top-Down Behavioral Microsimulation approach to determine the effect of National Wage Law on occupational choice. The results of the study revealed that the implementation of said National Wage Law would affect the distribution of labor force across occupational classification such as wage workers, entrepreneurial farming activities workers, and entrepreneurial non-farming activities workers. This has resulted from a higher utility that will be derived from the wage working sector once the National Wage Law will be implemented. Further, among regions in the Philippines, the Calabarzon, National Capital Region, and Central Luzon had recorded the highest number of workers who prefer the wage income sector. The findings of the study also suggest that the Philippine agricultural sector will be greatly affected by the National Wage Law due to the preference of workers to shift from the entrepreneurial farming sector to belong to the wage sector.

• The Journal of Asian Finance, Economics and Business
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• 제8권1호
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• pp.543-550
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• 2021

The purpose of the study is to investigate the simulated effects of the Philippine tax reform, which is called Tax Reform for Acceleration and Inclusion Law, on household income and occupational choice. The study utilized the Family Income Expenditure Survey and tax collection as input to Computable General Equilibrium-Top Down Behavioral Microsimulation approach to determine the effect of Philippine tax reform on household income and occupational choice. The results of the study show that the household income in the Philippines will increase due to the implementation of the Philippine tax reform. Also, the study had found that tax reform results drive the household to shift from being farming entrepreneur to salaried workers since the utility derived from being workers is much higher compared to the utility derived from being entrepreneur. The findings of this research suggest that the Philippine Tax Reform for Acceleration and Inclusion Law is beneficial to the household since their income would increase, which will further result to an increase in their capability to buy goods and services. However, the tax reform would also lead to imbalance between the distribution of numbers of workers across sectors such as entrepreneurial farming, entrepreneurial non-farming, and wage sector.

• Structural Engineering and Mechanics
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• 제70권2호
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• pp.169-178
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• 2019

The replacement of damaged components is an important task for long-span bridges. Conventional strategy for component replacement is to close the bridge to traffic, so that the influence of the surrounding environment is reduced to a minimum extent. However, complete traffic interruption would bring substantial economic losses and negative social influence nowadays. This paper investigates traffic control technologies without interruption for component replacement of long-span bridges. A numerical procedure of traffic control technologies is proposed incorporating traffic microsimulation and site-specific data, which is then implemented through a case study of cable replacement of a long-span cable-stayed bridge. Results indicate traffic load effects on the bridge are lower than the design values under current low daily traffic volume, and therefore cable replacement could be conducted without traffic control. However, considering a possible medium or high level of daily traffic volume, traffic load effects of girder bending moment and cable force nearest to the replaced cable become larger than the design level. This indicates a potential risk of failure, and traffic control should be implemented. Parametric studies show that speed control does not decrease but increase the load effects, and flow control using lane closure is not effectual. However, weight control and gap control are very effective to mitigate traffic load effects, and it is recommended to employ a weight control with gross vehicle weight no more than 65 t or/and a gap control with minimum vehicle gap no less than 40 m for the cable replacement of the case bridge.

• 보건행정학회지
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• 제26권3호
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• pp.185-194
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• 2016

Background: The purpose of this study is to forecast changes in the prevalence of chronic diseases and health expenditure by age group. Methods: Based on the Future Elderly Model, this study projects the size of Korean population, the prevalence of chronic diseases, and health expenditure over the 2014-2040 period using two waves (2012, 2013) of the Korea Health Panel and National Health Insurance Service database. Results: First, the prevalence of chronic diseases increases by 2040. The population with hypertension increases 2.04 times; the diabetes increases 2.43 times; and the cancer increases 3.38 times. Second, health expenditure on chronic diseases increases as well. Health expenditure on hypertension increases 4.33 times (1,098,753 million won in 2014 to 4,760,811 million won in 2040); diabetes increases 5.34 times (792,444 million won in 2014 to 4,232,714 million won in 2040); and cancer increases 6.09 times (4,396,223 million won in 2014 to 26,776,724 million won in 2040). Third, men and women who belong to the early middle-aged group (44-55 years old) as of 2014, have the highest increase rate in health spending. Conclusion: Most Korean literature on health expenditure estimation employs a macro-simulation approach and does not fully take into account personal characteristics and behaviors. Thus, this study aims to benefit medical administrators and policy makers to frame effective and targeted health policies by analyzing personal-level data with a microsimulation model and providing health expenditure projections by age group.

• 전기학회논문지
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• 제60권1호
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• pp.93-99
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• 2011

A PRT vehicle's control method is presented in this paper. In the asynchronous vehicle control system, vehicles follow their leading vehicles. Leading vehicles are defined differently among the different types of track. The main topic of this paper is to present a method to define the leading vehicle among different types of track and the calculation algorithm of the safety length the following vehicle must maintain. Simulation program is developed using the algorithm and the results of the test run are presented. An asynchronous PRT vehicle control algorithm was presented by Szillat in the paper "A low level PRT Microsimulation, Dissertation, University of Bristol, 2001". But it is different from the algorithm in this paper. In the algorithm proposed by Markus, vehicles in the merging track are controlled synchronously, and its safety distance between the leading and the following car is evaluated after the establishment of the complicated future time-location table instead of simple equations proposed in this paper.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2015년도 제52차 하계학술대회논문집 23권2호
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• pp.179-180
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• 2015

에이전트 기반 마이크로 시뮬레이션에서 많이 사용하는 단순 전이확률(transition probability) 행렬이나 추정된 전이확률함수는 단순화하는 과정에서 정보 손실이 발생하고 복잡한 모델에서 사용할 수 없고 전이확률이 시간에 따라 변화하면 시간 변화를 따르는 별도의 추정이 필요로 한다. 본 연구는 이런 기존 방법의 한계를 해결하기 위하여, 다차원 전이확률표들을 이용해서 이벤트 발생을 결정함으로써 정보 손실을 줄이고 단순 행렬이나 함수로 표현하기 어려운 경우에도 이벤트 발생을 재현하고, 시간 독립적인 전이확률표를 이용해서 이벤트 발생을 결정함으로써 시간 변화를 별도로 추정하지 않고 이벤트 발생을 예측할 수 있는 방법을 제안하는데 있다.