• Food Industry
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• s.137
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• pp.49-65
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• 1996

• Korea Information Processing Society Review
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• v.21 no.6
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• pp.44-53
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• 2014

• The Korean Journal of Financial Management
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• v.9 no.1
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• pp.223-262
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• 1992

This paper develops a theory of the demand for insurance. The present model incorporates insurance demand time value of insurance premium, and demand for listless and risky assets simultaneously within the expected utility framework. For a special case of CARA, an insurance decision can be made separately from other portfolio decisions. However, in general, the interactions of both decisions cannot be ignored even when insurable and speculative risks are stochastically independent. In particular, the role of risky investment in hedging insurable risk is demonstrated and it is shown that this role cannot be duplicated by an insurance contract. When the investment decision is made simultaneously with the insurance decision, some of the classic theory on insurance should be modified. As an example, the authors characterize the sufficient conditions, under which the Bernoulli criteria (without and with premium loadings) hold or are violated in terms of the net gain of risky investment, the net cost of insurance, and the stochastic relationship between insurable and speculative risks. The authors interpret the results using the Rothschild and Stiglitz's (1970) notion of 'increase in riskiness'.

• Journal of Korean Society of Transportation
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• v.30 no.2
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• pp.7-20
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• 2012

The objective of this paper is to construct pseudo-panel data set and estimate price and income elasticities of car travel demand, using 1995-2007 household income and expenditure survey data, in order to provide quantitative information for analyzing related policy effects in the transport sector. We categorized household survey data into 14 cohorts based on the birth year of the household head. As the result, a total of 133 pseudo-panel data sets was created for estimating price and income elasticities of car travel demand. Especially, price and income elasticities of car travel demand were separately estimated both short-term and long-term. We analyzed the panel model considering fixed effect within cohorts, using explanatory variables such as previous year's fuel consumption, real household income after tax, education level of the household head, the number of children under five, and the share of household type averaged by cohorts. As results, the short-term and long-term price elasticities of car travel demand were calculated as 0.2974-0.4280 and 0.4087-0.6275, respectively. Similarly, the short-term and long-term income elasticities were calculated as 0.3364-0.6281 and 0.7098, respectively.

• Review of Culture and Economy
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• v.21 no.3
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• pp.59-88
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• 2018

This study examines demand of the Korean TV VOD using monthly aggregate data and time series analysis models. In particular, the impact of box office attendance, number of IPTV subscribers, income and price of substitutes on TV VOD market is analyzed. Data on TV VOD download during the period 2013 January to 2018 June are used for the empirical analysis. TV VOD demand shows lower level of seasonality than box office attendance and the share of monthly top1 movie in TV VOD platform is also lower than that of box office attendance. The relationship between a movie's holdback and box office performance does not seem consistent. The empirical result of ARDL model reveals that in the short-run box office attendance, number of IPTV subscribers and price of substitutes have significant impact on TV VOD demand. The result on the long-term relation shows that income is the only determinant of TV VOD demand. The impact of box office attendance on TV VOD is not shown to be robust both for the short-term and long-term.

• Journal of Navigation and Port Research
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• v.47 no.3
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• pp.155-166
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• 2023

Trend analysis and time series analysis were conducted to predict the demand of manpower under the smartization of shipping and port logistics with transportation survey data of Statistic Korea during the period from 2000 to 2020 and Statistical Yearbook data of Korean Seafarers from 2004 to 2021. A linear regression model was adopted since the validity of the model was evaluated as the highest in forecasting manpower demand in the shipping and port logistics industry. As a result of forecasting the demand of manpower in autonomous ship, remote ship management, smart shipping business, smart port, smart warehouse, and port logistics service from 2021 to 2035, the demand for smart shipping and port logistics personnel was predicted to increase to 8,953 in 2023, 20,688 in 2030, and 26,557 in 2035. This study aimed to increase the predictability of manpower demand through objective estimation analysis, which has been rarely conducted in the smart shipping and port logistics industry. Finally, the result of this research may help establish future strategies for human resource development for professionals in smart shipping and port logistics by utilizing the demand forecasting model described in this paper.

• 주택과사람들
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• s.201
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• pp.76-79
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• 2007

영국 런던 부동산 시장의 가파른 오름세가 지속되고 있다. 2006년 초 일부 전문가들이 금리 인상 등으로 가격 오름세가 꺾일 거라는 전망을 내놓았지만 계속 되는 수요 증가로 가격이 급등세를 보인 것. 런던의 부동산 시장을 돌아보고, 특히 런던에서도 가장 수요가 많은 웨스트엔드 지역의 경쟁력은 무엇인지 분석했다.

• ETRI Journal
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• v.11 no.4
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• pp.37-49
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• 1989

본고에서는 우리나라 전화요금 전략수립에 일조하고자 전화통화의 수요탄력성을 시내통화와 시외통화로 나누어 추정하였다. 먼저 탄력성의 개념과 추정에 관하여 살펴보았으며, 아울러 제외국의 통화수요탄력성을 조사 분석하였다. 추정결과는 제외국에서의 일반적인 경향과 일치하며, 우러나라에서도 전화서비스가 필수품으로 정착되었음을 입증해 주고 있다.

• Electric Engineers Magazine
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• v.173 no.1
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• pp.42-46
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• 1997

향후 최대전력 부족예상으로 수요관리 대상기기 확대보급이 불가피할 것으로 예상되므로 주요 대상기기 중심으로 수요관리 프로그램의 본격적인 시행에 앞서 그동안 외국의 자료나 메이커들의 공급사양에만 의존한 채 예측되어 오던 수요관리 효과를 현장실측을 통해 보다 정밀하게 분석한다.

• Journal of the Korean Data and Information Science Society
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• v.12 no.2
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• pp.103-111
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• 2001

Now a day, overseas tour which is due to economic development grows very much. In this situation, a forecast of overseas tour is required to establish tourism policy for tourism marketing. In this paper, we compare regression model and gravity model for a forecast of overseas tour. Using gravity model, this study also suggests an attraction which is suitable to our situation, and suggested attraction is compared and analyzed with another.