• 한국정보통신학회논문지
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• 제22권7호
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• pp.970-977
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• 2018

2017년 우리 게임 시장의 특징 중 하나가 중국산 모바일 게임의 국내 흥행 성공이다. 국내 퍼블리셔와의 협업 강화 및 중화권 색채 덜어내기는 외형적인 면에서의 비즈니스 성공 요인이라 하겠으나 한국 모바일 게이머들이 중국산 게임을 예전보다 쉽게 받아들이는 데에는 상당한 다른 이유도 있다고 생각된다. 본 논문은 따라서 2017년에 중국 모바일 게임을 플레이 한 국내 사용자들의 평소 장르적 취향과 중국 게임 사전 인지 여부, 또 어떤 면에서 국내 게임보다 더 선호되었는지 등을 설문을 통해 밝히고자 하였다. 설문은 주로 청년 사용자들이 몰리는 여러 모바일 게임 사이트를 대상으로 하였으며 총 201명이 응답하였다. 응답자들은 79%가 남성이고 대부분이 20대 이하였으며 분석 결과 장르 별 성차가 있었는데 남성은 미소녀 함선 게임을 주로 하지만 여성은 수집형 게임을 더 좋아하는 것으로 나타났으며, 성별을 불문하고 한국 게이머들이 중국 모바일 게임의 오토메적 혹은 에로 카와이적 선정성이 강화된 일러스트와 한국 게임과는 다른 과금정책 및 운영정책에 높은 점수를 주었다.

• East Asian Economic Review
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• 제16권3호
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• pp.249-272
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• 2012

This paper examines how a Korean automobile firm price-discriminates between the Korean and the U.S. markets. We argue that a Korean automobile firm's pricing behavior depends on the differences in price elasticity over the segmented markets between the countries. Our findings are that differences in price elasticity may help explain why a medium-class car's price is higher in Korea than that in the U.S. while a small-sized car's price is higher in the U.S. than in Korea, which implies that a Korean automobile firm $3^{rd}$ degree price-discriminates on the same or similar products between Korea and the U.S. This type of $3^{rd}$ degree price discrimination differs from a typical home-bias effect (charging higher prices to domestic consumers) because a small-sized car which is produced domestically sells at higher price abroad. This finding can be added as a source that violates the law of one price.

• 한국수소및신에너지학회논문집
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• 제33권4호
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• pp.267-283
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• 2022

In these day, the environmental issues of climate change have been continuously highlighted and there is an active discussion on the transition from fossil fuel-based energy to eco-friendly energy use. This study considered psychological attitudes as a major influencing factors for successful implementation of a hydrogen society totally based on the use of hydrogen energy, which is regarded as an alternative energy for future. Accordingly, familiarity, risk perception, and acceptability of psychological factors were investigated. In addition, this study identified whether there are differences in psychological factors according to the general characteristics of gender, age, occupation, and housing type. The results showed that awareness of hydrogen cars and fuels is below the average level, and we also have obtained the implication that social knowledge sharing should precede the implementation of hydrogen policy. Although we found that the degree of urban acceptance of hydrogen energy was high, it was also confirmed that the charging infrastructure was generally perceived as having a high risk. Our findings implicate that it is necessary to figure out policy strategies for suitable locating charging infrastructure in order to promote the use of hydrogen energy more.

• 한국도서관정보학회지
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• 제12권
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• pp.35-59
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• 1985

User fees have been employed by libraries as far back as the mid-1800s in both United States and England. By the late 1800s and early : 1900s, the charging of user fees for some library products and services had become a reality in many public and academic libraries. Yet the practice has created controversy when computer-aided reference service began to charge especially in the publicly funded libraries. There are two extream arguments on library reference service fees : one is for and the other is against. most fee o n.0, pponents base their stand on morality. They argue that charging fees for any service is wrong because it violates the user's right of access to information and regard it as an act of decrease human life chances as well as an act of censor. But those who favour fees argue that it is necessary to separate the rhetoric from the reality and to distinguish what libraries are from what they do. The study revealed that library has two options. One is strict free of charge and the other is charging for selected library services. Whatever options the library may take, library had to decide an overall reference service policy. The level and scope of service, audience, necessary fund (who and how) and many other physical and metaphysical things must be considered. However, the first option will necessary be to limit services while there is no loss of traditional philosophical service element. Yet, if to provide a wide range of choices and to create conditions more hospitable to competition from the private information sector and for better evolutional selection, the second option(fee-based service) gives more benefit to the users while there is a loss of fundamental service philosophy.

• 대한전자공학회논문지TC
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• 제40권10호
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• pp.138-149
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• 2003

인터넷이 최선형 망에서 품질형 비즈니스 망으로 진화해가면서 정확한 트래픽 측정 데이터를 기반으로 한 과금이 인터넷 서비스 제공자에게는 매우 중요한 이슈로 떠오르고 있다. 과금 협상은 서비스 제공자와 고객간뿐만 아니라 서비스 제공자간에도 필요하지만 현재로는 가장 간단한 정액제를 대부분 사용하고 있다. 상호 관련 기관간에 동의할 수 있는 적절한 과금 정책을 찾기가 쉽지 않기도 하지만 의미 있는 종량제 기반의 과금 시스템을 개발하기에는 많은 기술적인 어려움이 있다. IP 헤더 정보에만 의존한 사용량 기반 측정은 피어 투 피어 응용과 네트워크 게임과 같은 인터넷 응용의 개발 및 활용으로 인한 동적인 특성으로 인해 더 이상 충분하지 않게 되었다. 이 응용들은 포트번호를 동적으로 변경하며 심지어는 여러 응용이 하나의 포트번호를 공유하기도 한다. 따라서 보다 정확하게 트래픽 사용량을 분류하고 측정할 수 있는 방법이 필요하다. 본 논문에서는 고성능, 뛰어난 적응성 및 확장성을 가지면서 정밀하게 사용량을 측정하고 분석할 수 있는 컨텐츠 기반 응용 트래픽 측정 및 분석 시스템의 구조, 알고리즘 및 구현방법을 제안한다.

• 한국정보통신학회논문지
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• 제24권1호
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• pp.71-76
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• 2020

배틀 로얄 장르는 다수의 플레이어가 참여하는 전투 모드에서 최후의 1인 혹은 1 유닛이 살아남는 것을 목표로 하는 게임 장르이다. 최근 이 장르의 1인칭 슈팅 게임이 크게 유행했는데 2017년부터 2018년 상반기의 세계적 선두주자는 한국 PUBG의 Player Unknown's Battleground였다. 하지만 2018년 들어 같은 장르의 3인칭 게임인 포트나이트의 추격을 받고 있는데 한국과 중국을 제외한 국제 시장에서 PUBG가 고전 중이다. 본 논문은 이 두 게임의 내부 전투 구조, 무기 체계, 생존 장치 등의 게임 장치를 서로 비교하고, 두 게임을 모두 사용해 보고 현재 포트나이트를 사용하고 있는 플레이어들을 중심으로 어떤 점이 배틀그라운드의 약점이며 무엇이 후발 주자인 포트나이트를 선호하게 했는지를 알아보고자 하였다. 그 결과 전투와 관련된 게임성은 여전히 배틀그라운드가 높았으나 생존 요소와 과금 제도의 창의성과 사용자 친화성에서 배틀그라운드가 보완해야 할 사항들이 있음이 입증되었으며 이것이 2018년에 일어난 두 게임의 흥행 곡선의 차이를 설명하는 요소로 작용한다고 주장한다.

• 한국수소및신에너지학회논문집
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• 제33권4호
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• pp.284-292
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• 2022

Hydrogen is promising a candidate for energy supporting the carbon neutrality policy for greenhouse gas reduction, which is being promoted in several countries, including Korea. Although challenging efforts-such as lowering the costs of green hydrogen production and fuel cells-remain, hydrogen fuel cell electric vehicles (FCEVs) are expected to play a significant role in the energy transition from fossil fuels to renewable energy. In line with this objective, the hydrogen FCEV working group in the International Organization for Standardization (ISO) compiled and revised international standards related to hydrogen refueling stations as of 2019. A well-established hydrogen quality management system based on the standard documents will increase the reliability of hydrogen charging stations and accelerate the use of FCEVs. In this study, among the published ISO standards and other references, the main requirements for managing charging stations and developing related techniques were summarized and explained. To respond preemptively to the growing FCEV market, a continuous hydrogen quality monitoring method suitable for use at hydrogen charging stations was proposed.

• International Journal of Contents
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• 제15권2호
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• pp.1-12
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• 2019

Despite their various similarities, Seoul's' Gangnam and Seocho districts showed different patterns in the adoption of the RFID household-based waste charging system. Gangnam, one of the 25 wealthiest districts in Seoul, first adopted the RFID system in 2012, but decided abandon it a year later due to inconvenience, sanitation, budget limitations, and management related issues. Unlike Gangnam, Seocho, a largely similar district to Gangnam, started to implement the RFID system in 2015 and successfully adopted this innovation. In this paper, we explain the adoption behaviors of these two districts using a Technology Hype Curve Model with 5 stages. Unlike traditional technology adoption theory, the Hype Curve Model concentrates on the big chasm between early majorities and late majorities, which is a core reason for discontinuity in innovation diffusion. Based on our case study result, the early majority easily gave up adoption due to immature technological and institutional infrastructure. However, Seocho district, who waited until the deficiencies had been sufficiently fixed since late majorities, succeeded at incremental diffusion. Since its invention by Gartner cooperation, the Hype Curve Model has not received enough attention in academia. This paper demonstrates its explanatory power for innovation diffusion. Similarly, this paper focuses on the importance of institutional framework in the diffusion of innovation. Lastly, we compare the behavior of two local governments in supporting and diffusing RFID systems to draw relevant policy implications for innovation diffusion.

• Asia pacific journal of information systems
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• 제27권2호
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• pp.99-125
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• 2017

In this study, we propose an operations model to automate a home energy management system (HEMS) that utilizes an energy storage system (ESS) in consideration of consumer utility. Most previous studies focused on the system for the profits obtained from trading charged energy using large-scale ESS. By contrast, the present study focuses on constructing a home-level energy management system that considers consumer's utility over energy consumption. Depending on personal preference, some residential consumers may prefer consuming additional energy to earn increased profits through price arbitrage and vice versa. However, the current system could not yet reflect on this aspect. Thus, we develop an operations model for HEMS that could automatically control energy consumption while considering the level of consumer's preference and the economic benefits of using an ESS. The results of simulations using a dataset of the Korean market show that an operations policy of charging and discharging can be changed depending on consumer's utility. The impact of this policy is not ignorable. Moreover, the technical specifications of ESS, such as self-discharge rate and round-trip efficiency, can affect the operations policy and automation of HEMS.

• 보건행정학회지
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• 제20권2호
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• pp.104-127
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• 2010

To vitalize the link program of Korean long-term care insurance system to community-based services for non-eligible people, we analysed the claim data from the Korean National Health Insurance Corporation (NHIC), and conducted a questionnaire survey to charging employees of elderly service department at local governments. The subjects were all 81,377 people, 57,454 of them were arranged to community-based services. The link program was more necessary among the missed subjects rather than the arranged people due to the need for physical or psychological assistance. By the result of the survey to the local government employees, 59.5% of subjects responded their proportion of link service was over 10% and under 20%, and 54.3% of them responded their job boundary are not clear. Major type of linking was notification the subject list to local government, 91.4%; proportion of periodical notification on the status of their service link were 57.1%, only 7.1% were followed to manage after the link. Difficult factors at the link process were pointed out the overload by other side work, deficiency of resources, rigidity of priority of link, and so on. Considering these results, to vitalize the community-based services to the non-eligible people, it may be essential the active participation of the subjects, construction of parts working in coordination among the institutions including NHIC, local governments, and service providers; development of various services for maintenance or promotion of the non-eligible peoples' health and functional status; and active participation of institutions from the third sector, and so on.