• Journal of the Korean Statistical Society
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• 제28권4호
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• pp.523-533
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• 1999

We consider the M/G/1 queueing model with D-policy. The server is turned off at the end of each busy period and is activated again only when the sum of the service times of all waiting customers exceeds a fixed value D. We obtain the distribution of unfinished work and show that the unfinished work decomposes into two random variables, one of which is the unfinished work of ordinary M/G/1 queue. We also derive the distribution of queue waiting time.

• 산업경영시스템학회지
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• 제19권37호
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• pp.111-115
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• 1996

This study is to decide each level ordering policy for deterministic demand in multilevel distribution system. The ordering policy is used the combinations of EOQ and LTC. The combinations of EOQ and LTC are 4 cases. Case 1 : Regional Warehouse∼EOQ, Central Warehouse∼EOQ. Case 2 : Regional Warehouse∼EOQ, Central Warehouse∼LTC. Case 3 : Regional Warehouse∼LTC, Central Warehouse∼EOQ. Case4 : Regional Warehouse∼LTC, Central Warehouse∼LTC. The criterion is to minimize total cost per year.

• 유통과학연구
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• 제9권2호
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• pp.25-30
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• 2011

Transport is animportant sector of government regulation. Every country has its own transport policy, but European countries are evolving a common transport policy, which has a long history. The establishment of a consistent common policy in the EU's transport sector is still underway. The key motivations of this policy are 1) to establish and implement a common transport policy, 2) to clarify the concept of sustainability in the transport sector, and 3) to integrate transport services into a common infrastructure. One of the policy's objectives is the progressive movement towards sustainable development in the transport section. The EU'stransport policy has recognised that intermodality is a very important competitive tool. The EU's policy thrustin intermodal transport can be catergorised into infrastructure, technology, and standards and rules. However, obstacles to success can be detected. Cases like that of TEN-T and Marco Polo illustrate European intermodal policies in practice. As regards sustainability in the transport sector, intermodality can be an alternative solution to the increasing imbalance between transport modes and congestion arising from increased road use. Sustainability has been emphasised by the EU, which aims to establish intermodality in its future alternative transport systems while fostering sustainable development in the transport sector. Therefore, intermodality can be defined as a general trend in the current transport market, drawing interest from public institutions and transport-related market players. The EU has thus made an effort to facilitate intermodality in its territory, materialised through various policy options. Therefore, looking into the EU's intermodal transport policies is worthwhile, as doing so can provide useful lessons for all concerned parties.

• 디지털융복합연구
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• 제11권11호
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• pp.155-161
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• 2013

본 연구는 스마트교육정책의 태동 배경을 밝히고, 스마트교육정책이 가지고 있는 정책적 특징을 분석하여 정책과제와 정책 방향을 제시하고자 하였다. 먼저 스마트교육정책은 배분 정책의 유형에 따른 특성을 가지고 있다. 둘째, 스마트교육정책은 다른 정책에 비해 정책의 유형적인 정도(tangibility)가 매우 큰 편이며, 정책 효과(impact)에 대한 검증이 필요한 단계라고 할 수 있다. 셋째 스마트교육정책은 그동안 우리나라에서 1996년부터 추진되어온 교육정보화 종합 발전 방안의 역사적, 맥락적 동질성을 계승한 정책으로 향후 정책 추진에 있어서도 이에 기반한 추진전략이 필요하다. 넷째, 스마트교육정책은급변하는 정책 환경에 발맞추어 정책 추진에 있어서도 큰 폭의 유연성을 확보하여야 할 것이다. 따라서 과학적 정책 설계와 전략적 투자가 이루어져야 하고, 정책 오류 사례 등을 관리하여 향후 정책 설계에 활용할 필요가 있다.

• 디지털융복합연구
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• 제11권5호
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• pp.83-94
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• 2013

이러닝이 기존의 면대면 교육을 대체하는 중요한 기회의 시대에 있으며, 이러닝이 교육적으로 성공적인 효과를 창출하기 위해서는 이러닝 산업의 건전한 유통구조가 필수적임에도 불구하고 우리의 현실은 그렇지 아니하다. 본 연구는 이러닝 시장의 건전한 유통구조 확립을 위한 현황 분석과 제도적 합리화 방안을 마련하는 것을 목적으로 하고 있다. 따라서 이러닝 유통의 개념 및 범위를 정하고, 이러닝 유통의 유형과 단계, 유통주체 등을 정의하였다. 또한 국내외 이러닝 시장에 대한 영역별, 거래별 비즈니스 모델과 유통구조 모델의 연구와, 이러한 모델을 기준으로 사업자들이 어떤 구조로 거래가 이루어지는지에 대하여 설문조사를 통해 이러닝 유통구조 모델링을 하였다. 이러한 유통구조 모델링 과정에서 설문조사의 결과분석을 통해 유통구조에서 나타난 현황과 문제점 분석을 하였고 이에 대한 정책적인 합리화 방안을 제시하였다.

• 산경연구논집
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• 제14권4호
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• pp.11-21
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• 2023

Purpose: The purpose of this study is to explore how to apply marketing and foster public policy for better establishment of the sharing economy in a society. In particular, this study investigates the following: i) how citizens understand definition and scope of the sharing economy; ii) how citizens actually use and perceive sustainability of the sharing accommodation? iii) how factors such as policy preparation for marketing to the public, policy preparation for regulations, and perceived sustainable growth affect overall attitude to accommodation sharing?; iv) how does overall attitude affect satisfaction and intention to use? Research design, data and methodology: This study conducted an online survey with the assistance of a well-known research firm and applied secondary data. This study applied t-test, factor, ANOVA, and regression analysis for analysis. Results: The results found that policy preparation for marketing to the public, policy preparation for regulation, and perceived sustainable growth of the accommodation sharing significantly affect overall attitude toward accommodation sharing. Conclusions: The results provide managerial and policy implications. The sharing economy will be established in a society with better understanding of the meanings and scopes by citizens. Better policies should be prepared and promoted to the public to increase awareness for sustainable growth of accommodation sharing.

• 유통과학연구
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• 제14권11호
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• pp.29-36
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• 2016

Purpose - Intense debate is occurring over support for farmers in Korea, specifically on the justification, policy design, and equality issues of the farm support programs. Given this debate, a new type of farm program in the US, a market flexible revenue program(the Average Crop Revenue Election, ACRE), is examined. ACRE stands in contrast to traditional programs that tie payments to price and have parameters that are fixed or change only infrequently. Research design, data, and methodology - Based on the ACRE program formulas, the potential payments are estimated by crop year, program crop and geographical area using the FSA acreage and payment rate data. Results - If all US farm program acres were in ACRE over the 2009-2013 crop years, payments would have totaled $7.95 billion or 1.2 percent of average market receipts for US crops. Enacting ACRE as a revenue program instead of a similarly-structured price-only program increased payments by $1.75 billion or 28 percent. Conclusions - Potential payments by ACRE largely reflected the distribution of the value of production across the program crops eligible for ACRE as well as across state geographical areas. If program parameters can be made acceptable and if data availability issues can be addressed, market flexible revenue programs offer a farm policy option that can address many of the concerns that have arisen over farm policy in Korea.

• 유통과학연구
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• 제12권7호
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• pp.77-88
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• 2014

Purpose - Based on the existing retail policy literature, this study aims to compare Korea with foreign countries, to propose better ideas for the Korean retail market. Research design, data, and methodology - It is necessary to analyze the existing retail regulations after categorizing them into several groups, depending on why governments have regulated retailers and the background for the retail policy. Results - Given that Korean retail regulations have focused on protecting conventional markets, comparing the retail policy objectives of South Korea and foreign countries is difficult. Conclusions - It is necessary examine how to protect independent stores, irrespective of store locations across the country. Rather than limiting the distance between traditional markets and the projected locations suggested by large retailers, various factors such as store size limit, opening and closing times, below-cost selling, land use planning, and competition tests are needed to protect small stores. Further, centralized authority for store operations should be delegated to local governments, to tackle the aggressive expansion of retail giants. To protect independent stores, political background is among the most important factors.

• Journal of the Korean Data and Information Science Society
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• 제24권4호
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• pp.941-948
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• 2013

We introduce the $P^M_{{\lambda},{\tau}}$ service policy, as a generalized two-stage service policy of the $P^M_{\lambda}$ policy of Bae et al. (2002) for an M/G/1 queueing system. By using the level crossing theory and solving the corresponding integral equations, we obtain the explicit expression for the stationary distribution of the workload in the system.

• 한국신뢰성학회지:신뢰성응용연구
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• 제6권2호
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• pp.151-161
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• 2006

This article is concerned with cost analysis model in periodic maintenance policy. The repair policy is differently applied according as unit importance during an item being used and unit restoration during an item being failed. So in this paper the repair policy with minimal repair is considered as follow : as the occurrence of failure between minimal repair and periodic interval time, unit is replaced by a spare unit until the periodic maintenance time arrived. Then total expected cost per unit time is calculated according to scale parameter of failure distribution in a view of customer's. The total expected costs are included repair and usage cost : operating, fixed, minimal repair, periodic maintenance and spare unit cost. Numerical example is shown in which failure time of item has Erlang distribution.