사회규범과 크리티컬 매스가 온라인 게임 이용자의 구전의도에 미치는 영향에 관한 연구

배정호(Jungho Bae),김문섭(Moon Seop Kim) 한국콘텐츠학회 2014 한국콘텐츠학회논문지 Vol.14 No.4

본 연구는 온라인 게임의 기존 이용자 유지 및 신규 이용자 유치 방안을 제시하고자 온라인 게임 이용자들의 긍정적 구전에 미치는 요인과 그 구조에 대해 밝히는 것을 목적으로 한다.기존 연구에서는 게임의 속성이나 이용자의 속성이 온라인 게임 이용의도에 미치는 영향에 주로 초점이 맞춰져 있었다.하지만 네트워크 기반으로 이용자 간 커뮤니케이션을 동반하는 온라인 게임의 특성상 개별 소비자의 이용뿐만 아니라 확산을 통한 일정 수준의 소비자 확보가 온라인 게임 시장에서 성공의 핵심 요인이다.즉,게임 이용자가 증가할수록 게임 이용자가 얻게 되는 가치가 증가할 것이라는 네트워크 외부성을 고려해야 한다.따라서 본 연구는 온라인 게임의 사회규범적 특성 및 크리티컬 매스의 특성이 온라인 게임에 대한 태도 및 구전의도에 미치는 영향을 규명하고자 하였다.연구결과 사회규범적 특성과 크리티컬 매스의 특성은 온라인 게임에 대한 태도에 유의한 양(+)의 영향을 미치는 것으로 확인되었다.또한 사회규범적 특성과 태도는 이용자의 구전의도에 유의한 양(+)의 영향력을 직접적으로 미치는 것으로 밝혀졌다.이러한 결과는 이용자 확보를 위해 긍정적 구전 확산을 원하는 온라인 게임 기업들에게 사회규범 및 크리티컬 매스의 활용 방안에 대한 실무적 시사점을 제시한다. The purpose of this research is to find the specific structure with factors that affect online game users’ positive word of mouth(WOM) for online game companies to maintain existing and new users. In previous studies the influence of characteristics of online games and attributes of users on intention to play online games is mainly focused on. However online games are products with communication on network, so that critical mass through diffusion as well as the use of product by individual consumers is important issues. Therefore, it is necessary to consider network externality effect that the more value can be obtained by more game users. The authors verified that the influence of the variables like social mass and critical mass, affecting consumers’ attitude and WOM. According to the research results, social norm and critical mass have significant influence on positive attitude and WOM intention for online games. Another results verified that social norm and users’ attitude affect positive WOM intention directly. These results suggest managerial implication regarding social norm and critical mass to online game companies that desire for WOM to get more online game users.

2차원 나노소재의 국방분야 적용방안

배정호 ( Jungho Bae ) 한국국방기술학회 2024 한국국방기술학회 논문지 Vol.6 No.1

2차원 평면에 결정구조를 갖는 2차원 소재는 2004년 처음 발견된 그래핀(Graphene)을 시작으로 2011년 발견된 맥신(MXene)에 이르기까지 나노기술 분야의 차세대 소재로 주목받고 있다. 2차원 소재 중 광범위하게 연구되고 있는 그래핀, 맥신, 육방정계 질화붕소, 전이금속 칼코게나이드의 특성을 소개하고 각 2차원 소재를 국방 분야에 적용할 수 있는 기술을 소개하여 차세대 무기체계 및 전력지원체계에 적용할 수 있는 방안을 제시하고자 한다. Two-dimensional materials, which have a crystal structure in a two-dimensional plane, are attracting attention as next-generation materials in nanotechnology, from Graphene, first discovered in 2004, to MXene, discovered in 2011. In this study, Among new 2D materials, we introduce the characteristics of Graphene, MXene, hexagonal boron nitride, and transition metal chalcogenide, which are being studied extensively, and introduce technologies that can be used to apply each 2D material to the defense field. We would like to present a method that can be applied to next-generation weapon systems and war-power support systems.

온라인 게임 내 지위와 자아 일치성이 온라인 게임의 지속적 이용 의도에 미치는 영향에 관한 연구

배정호(Bae, Jungho),김문섭(Kim, Moon Seop) 국제e-비즈니스학회 2013 e-비즈니스 연구 Vol.14 No.4

영유아와 어머니 스마트기기 사용정도가 영유아의 문제행동에 미치는 영향

배정호(Jungho Bae),범은애(Eunae Burm) 인문사회과학기술융합학회 2018 예술인문사회융합멀티미디어논문지 Vol.8 No.5

The purpose of this study is to investigate the relationship between the level of smart devices usage by children and mothers and the problem behaviors of children and provide basic data for prevention of children behavior by excessive use of smart devices. To this end, we analyzed the relationship between the use time of weekdays and weekends of smart devices and problem behaviors of children and mother who is the main caregiver. Logistic regression analysis was performed by dividing upper, middle, and lower groups according to smart devices usage time. First, the use of smart devices for children was higher on weekends than on weekdays, and the use of mothers smarts was higher on weekdays than on weekends. Second, it was found that the children in the group with high usage time of smart devices experienced attention and other behavior problems. Third, as a result of analyzing the relationship between children smart device usage time and problem behavior with children s gender, household income level, and age as correction variables, it was found that problem behaviors also occurred to children in the group with normal use time of smart devices. Based on these results, it can be shown that the use of smart devices on weekdays and weekends can be a factor that can induce problem behaviors of children. We discussed the dependence and problem behaviors of children on smart devices in early childhood according to their mothers habits and attitudes to use smart devices and the way they provide smart devices for their children. 본 연구의 목적은 영유아와 어머니의 스마트기기 이용 수준과 영유아의 문제행동과의 연관성을 알아보고 스마트기기의 과도한 사용으로 인한 영유아문제행동 위험성 예방을 위한한 기초자료를 마련의 일환이다. 이를 위해 영유아와 주 양육자인 어머니의 주중 및 주말 스마트기기 이용시간과 CBCL-TRF 평가척도로 문제행동과의 관계를 분석하였다. 스마트기기 사용 시간에 따라 상, 중, 하위 그룹을 나누고 로지스틱 회귀분석을 실시하였다. 그 결과 첫째, 영유아 스마트기기 사용은 주중 보다 주말이 높았으며, 어머니 스마트 사용은 주말보다 주중이 높게 나타났다. 둘째, 스마트기기 이용시간이 많은 집단의 유아들의 경우 주의력 및 기타 행동 문제가 발생한 것으로 밝혀졌다. 셋째, 영유아의 성별, 가정의 소득수준, 연령을 보정변수로 영유아 스마트 기기 이용시간과 문제행동의 관계를 분석한 결과 스마트기기 이용시간이 보통인 집단의 유아들에게 기타행동문제의 위험성이 있는 것으로 나타났다. 이러한 결과에 기초하여 주중 및 주말 영유아 스마트기기 이용은 영유아의 문제행동을 유발할 수 있는 요인이 될 수 있으나 단순히 사용시간만으로는 문제행동 위험성을 설명할 수 없었다. 어머니의 스마트기기 사용습관과 태도, 자녀에게 스마트기기를 제공하는 양상에 따라 영유아기 자녀의 스마트기기 과의존 및 문제행동이 설명될 수 있음을 논의하였다.

커리큘럼 러닝을 이용한 항공기 강화학습

배정호(JungHo Bae),강윤성(YunSeong Kang),윤석민(SukMin Yoon),김용덕(YongDuk Kim),김성호(SungHo Kim) 한국정보과학회 2020 한국정보과학회 학술발표논문집 Vol.2020 No.12

기업의 사회공헌활동이 기업가치에 미치는 영향

배정호(Bae Jungho),김병도(Kim Byung-Do),김준호(Kim Jun Ho) 한국인사조직학회 2008 인사조직연구 Vol.16 No.2

  최근 기업의 사회적 책임은 글로벌 기업의 핵심 경영 주제로 부각되고 있다. 일부 국내 기업들도 기업의 사회적 책임을 실천하기 위해 금전적 기부, 사회봉사활동, 장애인 고용 등 사회공헌활동에 참여하기 시작했다. 그러나 국내 기업들은 사회적 공헌활동의 필요성에 대해 원론적으로 공감하면서 사회공헌활동에 대한 투자에는 아직 소극적인 것 같다. 그 이유는 사회공헌활동의 재무적 성과를 정확히 측정한 경험이 없고 대부분 기업은 사회공헌활동을 투자로 인식하기 보다는 비용으로 인식하는 경향이 지배적이기 때문이다.<BR>  본 연구의 목적은 기업의 사회공헌활동 및 관련 투자 효과를 정량적으로 측정하는 데 있다. 사건연구 방법론을 통해 2001년 1월 1일부터 2006년 11월 31일까지 사회공헌활동이 언론에 공개된 100개 국내 기업에 대해 분석한 결과에 따르면, 사회공헌활동 및 관련 투자는 사건당일과 사건 직전일의 비정상 수익률 합의 평균이 1.04%로 나타났다. 이는 시가총액 기준으로 약 1000억 원에 해당하며, 통계적으로 유의한 양(+)의 값임을 보여주었다. 또한 사회공헌활동이 기업가치를 상승 시키는 세부적인 요인을 검증한 결과, 자산규모가 작을수록 사회공헌활동 투자의 효율성이 오히려 큰 것으로 나타났다.   Recently, CSR (Corporate Social Responsibility) is becoming a key management issue among leading global companies. A few Korean firms are beginning to recognize the importance of CSR and participate in corporate social activities such as donation, community services, the employment of the disabled, and so on. However, a majority of Korean firms are still not very active in investing in corporate social activities, even though they acknowledge its theoretical necessity.<BR>  The purpose of this study is to measure the economic value of corporate social performance and investment using the event study methodology. There have been various methods to evaluate corporate social investment in previous research. Each method has its advantages and disadvantages. Some indices in the balance sheets have more frequently been used. However, overcoming the problems in previous valuation methods, this study has employed event study method.<BR>  The event study method assumes that the firm’s stock price is immediately changed if any information considered to affect the corporate future cash flow is announced to the public. That is, it is possible to value the event on corporate action or environment by measuring the abnormal change of the stock price at the time of the information announcement. The key advantage of the event study is the possibility of reducing the bias between the time of corporate investment in the middle of the year and the time of making the balance sheets out in the end of the year. In other words, we can control the other extraneous variables affecting the value of corporate investment since we measure the instantaneous change of the stock price due to the event. Furthermore, stock price is known to be the most objective measure to evaluate the economic value of the company since it is determined by a lot of smart investors in the market who takes all kinds of possible future cash flows into present value.<BR>  The events that this study is interested in are the news announcement to public on corporate social investment from January 1, 2001 and November 13, 2006 identified by key word search on several websites. The events on corporate investment include monetary donation, welfare service, social justice and the environment protection. To measure the abnormal return of the stock price exactly, we excluded the events on companies which were not enlisted or enlisted for less than a year (e.g., the period required to estimate normal return) in the stock market. We also excluded the events on companies which made corporate investment two or more time in the measuring period (10 days), to measure the exact value of the corporate investment. Finally, we excluded the events if other information (e.g., events other than corporate investment) could affect the change of stock price in the measuring period. Total remaining number of data was 100.<BR>  The date when the event is announced is set to be the day 0 and the day before announcement date to be the day -1. We measure the abnormal returns on the days before the announcement date since some people often know the event before it is known to the public via news media. Our results show that the abnormal returns on the day 0 and -1 are statistically significant at the significance level of p = 0.05. Through social investments, the companies gain, on average, 1.04% of their market values or an average gain in market capitalization of $110 million. We conclude that corporate social investments have positive economic value.<BR>  In addition, we studied whether the abnormal returns are different across company sizes, industry types, the types of social investments, and the time of the investment to find specific causes of the abnormal return. Only the size of the company was statistically and negatively significant at the significance level of p = 0.05. As the size of the firm is getting smaller, its return on

커리큘럼을 이용한 투서클 기반 항공기 헤드온 공중 교전 강화학습 기법 연구

황인수,배정호,Insu Hwang,Jungho Bae 한국군사과학기술학회 2023 한국군사과학기술학회지 Vol.26 No.4

Recently, AI pilots using reinforcement learning are developing to a level that is more flexible than rule-based methods and can replace human pilots. In this paper, a curriculum was used to help head-on combat with reinforcement learning. It is not easy to learn head-on with a reinforcement learning method without a curriculum, but in this paper, through the two circle-based head-on air combat learning technique, ownship gradually increase the difficulty and become good at head-on combat. On the two-circle, the ATA angle between the ownship and target gradually increased and the AA angle gradually decreased while learning was conducted. By performing reinforcement learning with and w/o curriculum, it was engaged with the rule-based model. And as the win ratio of the curriculum based model increased to close to 100 %, it was confirmed that the performance was superior.

멀티에이전트 강화학습에서 견고한 지식 전이를 위한 확률적 초기 상태 랜덤화 기법 연구

김도현,배정호,Dohyun Kim,Jungho Bae 한국군사과학기술학회 2024 한국군사과학기술학회지 Vol.27 No.4

Reinforcement learning, which are also studied in the field of defense, face the problem of sample efficiency, which requires a large amount of data to train. Transfer learning has been introduced to address this problem, but its effectiveness is sometimes marginal because the model does not effectively leverage prior knowledge. In this study, we propose a stochastic initial state randomization(SISR) method to enable robust knowledge transfer that promote generalized and sufficient knowledge transfer. We developed a simulation environment involving a cooperative robot transportation task. Experimental results show that successful tasks are achieved when SISR is applied, while tasks fail when SISR is not applied. We also analyzed how the amount of state information collected by the agents changes with the application of SISR.

A Study on the Multi-level RRAM behavior of TaOx and TiOx devices

Arman Kadyrov,Jungho Bae(배정호),Youngsu Choi(최용수),Batyrbek Alimkhanuli,Gihwan Hyun(현기환),Hyeyoon Ryu(유혜윤),Kyesan Lee(이계산),Seunghyun Lee(이승현) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2

Artificial Intelligence (AI) has achieved a lot of breakthroughs in recent years. The areas include but are not limited to face and speech recognition, machine translation, classification, etc. To carry out the AI tasks, Deep Neural Networks (DNNs) are trained in software using significant amounts of datasets. To improve the efficiency of these networks novel processing methods in the category of analog memory and computations in non-von Neumann architectures have been under development. Among the modern concepts for accelerating a neural network, few emerging technologies attract special attention, namely phase-change memory (PCM) and resistive-switching random access memory (RRAM). PCM and RRAM facilitate the ability to store multiple states in a single cell, which is necessary for the precise measurements during the update of synaptic weights with analog behavior. This study is aiming to compare the behaviors of two different RRAM structures. One of them is using titanium oxide as an active layer and the second one is using tantalum oxide. As a result of the comparative advantages of the tantalum oxide have been highlighted.

우측 이하선에 발생한 Warthin 종양: 증례보고

민성창,윤규호,박관수,정정권,배정호,조규홍,한지훈,오영일,신재명,백지선,Min, Sungchang,Yoon, Kyuho,Park, Kwansoo,Cheong, Jeongkwon,Bae, Jungho,Jo, Kyuhong,Han, Jihoon,Oh, Youngil,Shin, Jaemyung,Baik, Jeeseon 대한악안면성형재건외과학회 2012 Maxillofacial Plastic Reconstructive Surgery Vol.34 No.6

Warthintumor (WT), also known as adenolymphoma or papillary cystadenoma lymphomatosum, was described in 1895 for the first time. It is a common benign tumor of the parotid glands and the second most common neoplasm of the salivary gland, accounting for 5% to 14% of all parotid neoplasm. A 63-year-old man visited our clinic with the complaint of swelling on the right parotid gland. Physical examination showed a 3 cm, firm, well-circumscribed, painless mass on the right mandibular angle. Computed tomography imaging showed a $3.5{\times}2.0{\times}1.6$ cm well-defined cystic mass. WT is histologically characterized by bilayered, oncocystic cell, lymphoid stroma, and cystic space. With these typical cytomorphologic characteristics, the fine-needle aspiration cytology was performed as diagnostic tool before the surgery. The lymphocytes and oncocystic cell were not observed. The lesion was completely excised under general anesthesia. We diagnosed the case as WT, from the surgically excised specimen. We report on the case with a review of the literatures.