• Journal of Energy Engineering
• /
• v.27 no.4
• /
• pp.36-49
• /
• 2018

This study analyzed the public preference and acceptance regarding renewable energy projects through Choice Based Conjoint Analysis. The results show that the surveyed respondents consider the leading authority of the projects, as the most important factor when considering participating in renewable energy initiatives. Following this, the mode of participation and profit distribution and the power plant location are also viewed as important, whereas participation through decision making regarding the projects was less important. Also when participating in renewable energy projects, respondents tend to prefer to financially participating through loans or owning shares rather than volunteering support for the business such as sharing information, stating one's views, or providing cooperation and coordination. Therefore, the focus is on distributional justice, such as financial investment and profit distribution, rather than procedural justice, for instance decision making. When analyzing the part-worths utilities for the participation attribute, the respondents most preferred to receiving dividends based on earnings by owning shares with the local government in charge of the entire projects. As a consequence, the results suggest that it is important to have local government get involved and have trust-worthy governing systems in place for the initiation of the public participating-renewable energy projects.

• The Journal of the Korea Contents Association
• /
• v.21 no.12
• /
• pp.34-46
• /
• 2021

In the domestic data exchanging market, unreasonable pricing of purchase data is consistently mentioned as a major obstacle in data trading. This is a problem caused by the inability to properly evaluate the value of data products due to lack of product information and experience in using them. In order to activate trading, the data exchanges need to provide information that allows consumers to comprehensively judge the value of data products in addition to prices. The cost-based, income-based, and market-based methods, which are mainly applied to data valuation, are insufficient as data valuation methods to stimulate trading and distribution because only price information, a result of valuation from a supplier's point of view, can be shared with consumers. This study aims to develop a measurable valuation method that allows data trading stakeholders (exchanges, suppliers, and consumers) to judge and share the value of data products from a common perspective. To this end, we identified the value drivers of data products, which are considered important in overseas data exchanges and related research, and derived an evaluation method that can quantitatively measure each value driver. In addition, evaluation criteria in the form of a rating table were developed using data products for transactions, and a value evaluation index was developed through stratification analysis (AHP) to enable relative value comparison. As a result of applying the evaluation criteria to actual data products, it was found that the evaluation values were differentiated according to the characteristics of individual data products, so it could be used as a relative value comparison tool.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.8 no.1
• /
• pp.85-91
• /
• 2013

Recently, the weight of high-quality multimedia contents is explosively growing out of the network total traffic. This steep increase of media contents to require huge traffic does not contribute to the generation of revenue streams and it leads to the situation of dumb pipe to trouble network providers into the big burden of investment on the network expansion. Accordingly, the transfer to the smart network to enable the effective delivery of large-scale media is imminently challenging issue to the network providers to seek the profitable business. The smart network revolves around the technologies to enhance end-to-end quality and fair usage with network resources and to optimize the traffic for the contents delivery over the concept of Content-Centric Network. In this paper, we propose an architecture and fundamental functions suitable for the smart network and suggest improved test results through the construction of an experimental network.

• Journal of the Economic Geographical Society of Korea
• /
• v.17 no.2
• /
• pp.280-295
• /
• 2014

This paper analyzes the topological structure of housing market networks with an application of minimal spanning tree method into apartment sales markets in the Capital Region over the period 2003.7-2014.3. The characteristics of topological network structure gained from this application to some extent share with those found in equity markets, although there are some differences in their intensities and degrees, involving a hierarchical structure in networks, an existence of communities or modules in networks, a contagious diffusion of log-return rate across nodes over time, an existence of correlation breakdown due to the time-dependent structure of networks and so on. These findings could be partially attributed to the facts that apartments as a quasi-financial asset have been strongly overwhelmed by speculative motives over the period investigated and they can be regarded as a housing commodity with the highest level of liquidity in Korea.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.41 no.2
• /
• pp.101-127
• /
• 2016

Irrational ordering decisions of supply chain members have been gaining growing importance in the area of supply chain management. Irrational ordering behaviors that deviate from the profit maximizing decisions in the newsvendor settings have observed with human experiments in recent research. These behaviors can be modeled with several typical decision bias elements. This bias in ordering decisions affects the performance of supply chain contracts designed based on the assumption that the supply chain members make optimal decisions, making it necessary to design supply chain contracts by considering the irrationality. The purpose of this research is to derive a method to design the revenue sharing contract that considers human irrationality in ordering decisions. This research considers a simple two-echelon supply chain consisting of one supplier and one retailer, where the supplier is assumed to be perfectly rational while the retailer making newsvendor type ordering decisions displays irrational ordering behaviors. Under this environment, this research analytically models the revenue sharing contract to maximize the total supply chain profit or the supplier's own profits while considering the three decision bias patterns of the retailer, which include the pull-to-center effect, the prospect theory, and the increased subjective sensitivity to the revenue sharing ratio. Irrationality parameters are measured through human experiments based on which and through numerical simulations, we showed that significant improvements in the supply chain performance can be achieved.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2010.07a
• /
• pp.152-155
• /
• 2010

IP기반 미디어 서비스는 대규모 사용자를 확보할 수 있고, 사용자 규모에 따른 수익을 올릴 수 있기 때문에 방송사에서는 중요 서비스의 하나로 인식하고 있다. 사용자의 지속적이고 빠르게 변화하는 새로운 서비스에 대한 요구사항들을 만족시키기 위해서 방송사는 보유하고 있는 관련 시스템들을 항시 새로운 서비스에 유연하게 대처할 수 있도록 해야 한다. 본 논문에서는 IP기반 미디어 서비스에 유연하게 대응할 수 있는 체계화된 방송콘텐츠 서비스 개방형 아키텍처 (OASIS: Open Architecture for Systematic IP-based Services)를 제안한다. 'OASIS'는 제작 시스템에서 자동으로 콘텐츠(예. 에센스와 메타데이터)를 수집하고 다양한 서비스에 맞게 수집된 콘텐츠를 제공할 수 있는 체계적이고 유연한 아키텍처이다. 더불어 OASIS는 방송콘텐츠 저작권 확보 여부를 확인할 수 있도록 하였기 때문에 최근 중요시되고 있는 저작권이 확보된 콘텐츠를 서비스할 수 있다. 제안하는 아키텍처는 시스템들 간에 콘텐츠를 교환할 때 표준화된 메타데이터와 ID를 사용하여 교환하게 함으로써 서비스 할 콘텐츠를 자동으로 시스템화하여 수집할 수 있다. KBS는 2년간의 작업을 거쳐 방송콘텐츠를 공유하는 데 필요한 메타데이터와 ID의 표준화 작업을 수행하였으며, 이를 기반으로 체계적으로 자동화된 수집 체계를 고안하였다. 다양한 서비스에 유연하게 콘텐츠를 제공하기 위한 측면으로는 openAPI(Application Programming Interface)를 활용하여, 서비스의 요구에 맞는 콘텐츠 내용을 제공할 수 있도록 하였다. 마지막으로 라이선스 관리 측면으로는 방송 콘텐츠 제작 시 수집할 수 있는 계약 정보 및 서비스 유통 가능 범위를 체계화함으로써, 제작 시에 저작권 정보를 수집하고, 해당 콘텐츠와 연동하여 서비스 가능 여부를 확인할 수 있도록 하였다. 제안한 아키텍처를 활용하여 다양한 서비스의 요구에 대응할 수 있는 콘텐츠 서비스 시스템을 구축할 수 있다.

• The Journal of the Korea Contents Association
• /
• v.14 no.6
• /
• pp.73-83
• /
• 2014

This paper is to analyse how Industree Crafts, social enterprise in the field of crafts, could generate profit and create a sustainable growth for the last 30 years out of dependence on government grants in India. Success factors was drawn from the findings as follows. First, bringing stakeholder value: it preferred social mission as a goal for generating the value of stakeholders respectively and shared value mutually. Second, building distinctive internal business processes: it adapted unique business model and 4P strategy into its internal organization system and introduced the way of management to support the independence of self-help groups aimed at creating greater added value. Third, promoting learning and innovation culture: it challenged with the help of new design strategies continuously, was unafraid of change, and promoted learning culture to turn trial and error into the organization learning. Finally fourth, securing right finances and resources: it obtained proper finances and resources such as trying joint-sale, attracting investment from a private company, and acquiring enough skilled artisans at every scaling up.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.31 no.12B
• /
• pp.1017-1027
• /
• 2006

Recently, Internet service providers are offering triple play service which combines voice and video services with the existing high speed Internet service under the common network infrastructure of IP protocol, so that they can create more benefit from operating a single network architecture. In line with this movement in the convergence of network and services, in this work we propose a bandwidth dimensioning method for the subscriber network of the IP network at flow level. To that purpose, let us propose a series of bandwidth dimensioning methods: bandwidth for best effort service only, bandwidth dimensioning for premium services, and bandwidth dimensioning schemes for the premium Internet services as well as the best effort service which comprise the TPS. Our link dimensioning method is based on the flow level that incorporates the flow blocking probability as a measure of grade of services(GoS), and investigates the characteristics of the proposed methods via extensive numerical experiments. After that, let us carry out a simulation experiment concerning the delay and loss performance of the packet scheduling for the premium services (QoS) using the bandwidth designed by our proposed method, via which the packet level quality of service (QoS) for the proposed link dimensioning method can be observed.

• Journal of Labour Economics
• /
• v.28 no.1
• /
• pp.1-28
• /
• 2005

First, The flow into and out of unemployment has been increasing considerably too since the late 1997. Moreover, about half of job changes involve career changes associated with industrial and occupational changes which workers work for. Workers who switch industries and occupations significantly suffer greater wage losses than observed similar workers who find new jobs in their pre-turnover industry or occupation. These findings imply that labor mobility is more likely to cause losses in accumulated skill of workers. Second, this study compared the wage return to past training when a worker remains with an employer with the wage return to past training when a worker moves to a new employer. Surprisingly, training provided by previous employers has significantly positive wage effect. These findings that the skill acquired by employer- provided training is transferable across some firms. Third, this study finds that the likelihood of sectoral mobility decreases with training received in the current industry. It gives an evidence of the industry- specific training. Based on these findings, this paper suggest the way of dividing the costs of benefits of training among employers within their sector to prevent under-investment in training.

• The Journal of Small Business Innovation
• /
• v.20 no.3
• /
• pp.49-68
• /
• 2017

Platform finance is emerging as an alternative finance for SMEs by suggesting a new funding source based on a new technology named FinTech. The essence of this business is the adapting ICT challenges to the financial industry that can adequately reflect risk assessment using Big Data and effectively meet individual risk-return preference. Thus, this is evolving as an alternative to existing finance in the form of P2P loans for Micro Enterprises and supply-chain finance for SMEs that need more working capital. Platform finance in Korea, however, is still at an infant stage and requires policy support. This can be summarized as follows: "Participation of institutional investors and the public sector," meaning that public investors provide seed money for the private investors to crowd in for platform finance. "Negative system in financial regulations," with current regulations to be deferred for new projects, such as Sandbox in the UK. In addition, "Environment for generous use of data," allowing discretionary data sharing for new products," and "Spreading alternative investments," fostering platform finance products as alternative investments in the low interest-rate era.