주식회사 카카오의 플랫폼 전략에 대한 연구

장경영,오정석,Jang, Kyoung Young,Oh, Jung Suk 한국벤처창업학회 2013 벤처창업연구 Vol.8 No.4

카카오톡 가입자 수가 1억 명(2013년 7월)을 돌파하며 급속한 성장세를 보이고 있다. 카카오톡이 많은 사람들의 일상생활에서 필수품으로 자리 잡자 카카오톡에 대한 연구도 활발해지고 있다. 하지만 기존 연구에서는 플랫폼으로서의 카카오톡에 대한 분석, 다시 말해 주식회사 카카오의 플랫폼 전략에 대한 분석이 충실하게 이뤄지지 않았다. 본 연구는 플랫폼 전략에 대한 대표적인 연구인 Platform Leadership(Gawer & Cusumano, 2002; 2008)과 Winner-take-all dynamics(Eisenmann et al, 2006), Open Service Innovation(Chesbrough, 2011)의 논의 내용을 이론적 배경으로 삼아, 주식회사 카카오의 플랫폼 전략을 분석했다. 분석 결과 카카오가 경쟁자인 다음커뮤니케이션의 마이피플과 네이버의 라인을 제친 것은 Eisenmann et al(2006)의 승자독식 플랫폼의 조건으로 설명됐다. 이렇게 경쟁자들을 제압한 카카오는 이동통신사들의 유료 문자 메시지에 머물러 있던 모바일 소셜 커뮤니케이션의 수준을 새로운 차원으로 격상시켜야 한다는 '극히 중요한 문제(essential problem)'를 해결함으로써 모바일 인스턴트 메신저라는 새로운 플랫폼을 창출하는 Gawer & Cusumano(2008)의 Coring 전략의 첫 번째 요건을 충족시켰다. 이어서 카카오는 카카오톡 아이템스토어와 모바일 게임 플랫폼(게임하기)을 통해 생태계 구성원들에게 경제적 인센티브를 제공함으로써 Coring 전략의 두 번째 요건(생태계 구성원들을 위한 경제적 인센티브 제공)도 충족시켰다. 카카오는 고객의 아이디어를 적극 받아들여 카카오톡 서비스를 지속적으로 개선해 대고객 플랫폼 리더십을 강화함으로써 Chesbrough(2011)의 Outside in-Open Service Innovation전략을 실행했다. KakaoTalk, a Korean mobile instant messenger service launched by KAKAO Inc., has grown remarkably popular in a short period of time, with its number of subscribers exceeding 100 million as of July 2013. Today, KakaoTalk is an everyday communication tool among most Korean mobile users. Although KAKAO has been the subject of many business and consumer studies, the KakaoTalk platform strategy has not been studied thoroughly. In this study, we analyze its platform strategy through the lens of several widely utilized frameworks such as Platform Leadership (Gawer & Cusumano 2002, 2008), Winner-take-all dynamics (Eisenmann et al. 2006), and Open Service Innovation (Chesbrough 2011). Our results show that Eisenmann et al (2006)'s "Winner-Take-All" platform best explains how KakaoTalk dominated its rivals, Mypeople by Daum Communications and Line by Naver Corporation. In surpassing its rivals, KAKAO delivered a solution to the 'essential problem' that mobile social communication should be upgraded from mobile companies' paid "Short Message Service" (SMS). By doing so, KakaoTalk fulfilled the first requirement of Gawer & Cusumano (2008)'s "Coring" strategy, which explains how a new platform is created. KakaoTalk also satisfied the second requirement of "Coring" by providing economic incentives for KakaoTalk members to interact through its Games and Items store. Actively accepting its customers' ideas and upgrading its services, KAKAO reinforced its platform leadership to its customers and put Chesbrough (2011)'s "Outside In - Open Service" innovation strategy into practice.

투자성향지표로 측정한 한국 가계의 재무적 은퇴준비

장경영(Kyoung-Young Jang),손지연(Ji-yeon Son) 전남대학교 생활과학연구소 2022 生活科學硏究 Vol.32 No.-

The purpose of this study is to identify the relation between the propensity to invest and the retirement preparation of the Korean Households. Specifically, effects of three different investment asset ratios, including investment assets to total assets ratio, capital accumulation ratio(CAR), and investment asset to annual income ratio, were tested. We analyzed 823 individuals from the 2018 wave of Fund Investor Survey collected by the Korea Investors Protection Foundation. The main results of this study are as follows: First, the average value of the investment propensity indicator as the ratio of investment assets to total assets was 4.2%, and the median value was 0.46%, which was remarkably low compared to the guidelines of previous studies presented as 20-25%. Second, when an open-ended question was asked about what percentage of the average monthly cost of living required for retirement, the financial consumers judged their retirement preparation rate to be about 52.9%. Third, as a result of analyzing the factors affecting consumers' subjective judgment on the level of financial preparation for retirement, it was found that age, monthly income, and real estate assets all work in the positive direction. Among the investment propensity indicators, while the ratio of investment assets to total assets and the ratio of investment assets to annual income were significant, the influence of the ratio of investment assets to net assets (CAR) was not statistically significant. The results of this study suggest that when financial counseling and education experts analyze consumer portfolios, it is necessary to look at the investment propensity indicator focusing on the ratio of investment assets to total assets instead of the ratio of investment assets to net assets (CAR). Also, it shows that it is necessary to guide the ratio of investment assets to total assets to about 20%, the baseline suggested by the guidelines of previous studies, for satisfactory preparation for retirement.

확정기여(DC)형 퇴직연금 투자 시뮬레이션 경험이 DC형 가입자의 적립금 관리태도에 미치는 영향

장경영(Kyoung young Jang),최현자(Hyuncha Choe) 한국FP학회 2020 Financial Planning Review Vol.13 No.4

본 연구는 저금리 기조의 지속으로 확정기여(DC)형 퇴직연금 가입자가 증가하고 있는 상황에서 근로자들이 자신의 노후를 위한 적립금을 좀 더 적극적으로 관리할 수 있도록 적립금 관리에 필요한 태도를 함양할 수 있는 방안을 제시하기 위해 투자 시뮬레이션 경험이 적립금 관리태도에 미치는 영향을 살펴보고자 하였다. 이를 위해 DC형 퇴직연금에 가입하고 있는 30~50대의 상용직 임금근로자 468명을 대상으로 설문조사를 실시하였으며, 연구결과는 다음과 같다. 첫째, DC형 퇴직연금 가입자의 가입현황 및 적립금 관리행동을 분석한 결과, 가입자 중 상당수가 본인이 스스로 책임져야 하는 퇴직연금의 핵심 내용조차 알지 못하는 것으로 나타났다. 투자상품을 1년에 한 번도 변경하지 않는다는 응답이 74.4%에 달해 가입자 4명 중 3명은 적립금을 관리하지 않고 사실상 방치하는 실정이었다. 둘째, 탐색적 요인분석을 통해 적립금 관리태도의 네 가지 구성요인과 측정 문항을 정리하고 이를 활용해 DC형 가입자들의 적립금 관리태도 수준을 파악한 결과, 적립금 관리태도 종합 점수(만점 50점)가 평균 36.16점(표준편차 5.22점)으로 나타났다. 100점 만점 점수로 환산한 구성요인별 점수는 적립금 관리방법 이해의 필요성 인식 점수가 79.04점으로 가장 높았고 적립금 관리에 대한 감정 점수가 56.08점으로 가장 낮았다. 셋째, 투자 시뮬레이션이 DC형 퇴직연금 가입자의 적립금 관리태도 구성요인 중 적립금 관리방법 이해의 필요성 인식에 통계적으로 유의미한 영향을 미친다는 사실을 확인하였는데 이는 투자 시뮬레이션이 적립금 관리태도를 함양하는 효과적인 도구가 될 수 있음을 시사한다. This study tried to examine the effects of investment simulation experience on Defined Contribution (DC) retirement pension subscribers’ management attitude of reserves in order to present a plan which cultivates the attitude necessary for reserve fund management so that workers can more actively manage reserves for their retirement. A survey was conducted on 468 regular wage workers in their 30s to 50s who are enrolled in the DC retirement pension. The analysis results and conclusions are as follows. First, as a result of analyzing the subscription status and management behavior of DC retirement pension subscribers, it was found that many of the subscribers did not even know the core contents of the retirement pension that they are responsible for themselves. As 74.4% of the respondents said they did not change their investment products once a year, three out of every four subscribers did not manage their reserves and virtually neglected them. Second, through exploratory factor analysis, the four components and measurement questions of the reserve management attitude were summarized, and as a result of grasping the level of reserve management attitude of DC subscribers, the average of the overall reserve management attitude score was 36.16 points out of a possible 100. As for the score for each component, the recognition score for the need to understand how to manage reserves was the highest with 79.04 points, and the emotion score for the management of reserves was the lowest with 56.08 points. Third, it has been confirmed that investment simulation has a statistically significant effect on the recognition of the need to understand how to manage reserves among the components of the reserve management attitude of DC retirement pension subscribers, indicating that investment simulation can be an effective tool for cultivating the reserve management attitude.

스테레오비전을 이용한 전차선 높이 및 편위 정밀 측정

김선기(Sun-Gi Kim),김현철(HyunChul Kim),백열민(Yeul-Min Baek),박종국(Jong-Guk Park),심재원(Jae-Won Sim),장경영(Kyoung-Young Jang),김회율(Whoi-Yul Kim) Korean Society for Precision Engineering 2006 한국정밀공학회지 Vol.23 No.10

수중 표적의 방위각 탐지를 위한 신호처리기 설계

홍춘표,장경영 대구대학교 과학기술연구소 1997 科學技術硏究 Vol.4 No.2

This paper presents a set of design techniques for detecting the bearing of underwater target. Basically the signal processor measures the time delay between two signals that come from the underwater sensors. The bearing is functions of the velocity of underwater sound, the distance between two sensors, and the time delay between sowed. The signal processor designed in this research uses the Polarity Coincidence Correlation (PCC) techniques to measure the time delay between sensors. In such case, to simplify the processor's hardware complexity, the correlation coefficient are obtained only using the phase information instead of phase and amplitude informations. In this paper, we propose a new technique for computing the correlation coefficient, in which the idea is the shifted data storing in memory. This technique is proved to be very efficient and fast, and can easily be extended to the large system. The field test results show that the processor designed in this research can be applicable to small system.