• The Korean Journal of Applied Statistics
• /
• v.36 no.4
• /
• pp.309-322
• /
• 2023

The Hawkes process is a point process with self-exciting characteristics. It has been mainly used to describe seismic phenomena in which aftershocks occur due to the main earthquake. Recently, it has been used to explain various phenomena with self-exciting properties, such as the spread of infectious diseases and the spread of news on SNS. The Hawkes process can be flexibly modified according to the characteristics of events by using various types of excitation functions. Since it is difficult to implement a maximum likelihood estimator numerically, estimation methods have been improved until recently. In this paper, the conditional intensity function and excitation function are explained to describe the Hawkes process. Then, existing examples of Hawkes processes used in seismic, epidemiological, criminal, and financial fields are described and estimation methods are introduced. I analyze earthquakes that occurred in gyeongsang-do, Korea from November 2017 to December 2022, using R package ETAS.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.17 no.5
• /
• pp.783-790
• /
• 2022

The development of SNS and video platforms provided an opportunity to explode the activation of content production and consumption. However, in the legacy system, due to the host-based location-oriented data transmission, there are inherent limitations in efficient operation and management. As an alternative to this, a Contents Centric Network (CCN) was studied. In this paper, when intermediate nodes located between the information provider and the information requester between the real-time streaming services in the CCN environment move or restrict their use, failure through monitoring of wireless reception strength to solve problems like disconnection of transmission quality at the information consumer. We propose a stable intermediate node management mechanism through active response before occurrence.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2022.05a
• /
• pp.239-242
• /
• 2022

본 연구는 고해상도 카메라를 통해 얻은 이미지에서 지문과 홍채와 같은 생체인식 정보가 쉽게 노출되고, 생체인식 정보가 담긴 이미지가 SNS 를 통해 유출되어 악용될 가능성을 고려해 이를 방지하는 기술을 제시한다. 이 기술은 컴퓨터 비전을 기반으로 한 프로그래밍 라이브러리인 OpenCV를 사용하여 이미지에서 지문과 홍채 영역에 Blur 처리를 하는 알고리즘을 활용한 생체인식 정보의 노출 방지 시스템을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.05a
• /
• pp.308-309
• /
• 2023

최근 반려동물을 키우는 가구가 점차 증가하고 있다. 본 논문에서는 반려동물 중 수가 가장 많은 반려견을 키우는데 가장 중요한 활동인 산책을 보조하는 어플리케이션을 제인하였다. 본 어플리케이션은 사용자의 위치에 기반해 반려견과의 산책 경로를 추천해준다. 산책은 일반산책, 추천 경로 산책으로 나누어져 있으며 주변에 있는 반려견 관련 장소의 정보도 제공한다. 또한 2km 내에 지나간 반려견의 정보도 알 수 있다. 그리고 리포트 기능을 통해 산책 데이터를 기반으로 지역 내 산책/거리 순위와 총 거리, 시간, 가장 많이 만난 반려견을 알 수 있다. 같은 지역에 등록된 유저들과 SNS 기능을 통해 정보를 주고받을 수 있다. 본 어플리케이션을 통하여 사용자들과 반려견들은 효율적이고 다양한 산책을 경험할 수 있을 것으로 기대된다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.733-734
• /
• 2023

버츄얼 유튜버로서 자신의 동작을 3D 가상 캐릭터로 나타내고, SNS 에서 춤을 공유하는 경우가 많아졌다. 본 논문에서는 2D 영상에서 MediaPipe BlazePose 모델로 추정된 사람 포즈를 3D 인체 모델인 SMPL 에 피팅하여 사용자 정의 3D 모델을 생성하는 방법을 제안한다. 이를 통해 자신의 춤 영상으로 3D 모델을 생성하여 공유하거나, 기존의 춤 동영상으로 3D 모델을 생성하여 댄스 게임에 사용할 수 있다. 이처럼 본 기술은 예술 및 엔터테인먼트 분야에서 다양하게 활용될 수 있다.

• Journal of Korean Medicine Rehabilitation
• /
• v.32 no.1
• /
• pp.133-144
• /
• 2022

The objective was to propose effectiveness of conservative treatments including Korean medical treatments for symptomatic Schmorl's nodes (SNs). We conducted retrospective study that analyzed the medical records of two patients with the symptomatic SNs. They were treated by conservative treatments including Korean medical treatments for 3 weeks. We evaluated numeric rating scale (NRS), Oswestry disability index (ODI) and EuroQol-5 dimension (EQ-5D) index. After treatment, NRS, ODI were decreased and EQ-5D index was increased. We performed literature search to analyze the mechanisms of its treatment and evaluate clinical trials. There were three major mechanisms: (1) Improving constructive stability of vertebrae, (2) alleviating pain, and (3) controlling autoimmunity. When comparing operative treatment (OT) trials and conservative treatment (CT) trials, we couldn't find conclusive basis that support which one is more effective. As OT trials reported some severe adverse events, CT trials reported mild adverse events. The conservative treatments that we used encompasses those mechanisms and is relatively safe. To obtain exact evidence of effectiveness, further studies are needed.

• Culinary science and hospitality research
• /
• v.19 no.2
• /
• pp.176-189
• /
• 2013

This study has been conducted on 213 students in 4-year universities located in the regions of Daejeon and Chungnam in order to investigate a method to develop a smart device based culinary education application and the results and development method were as follows. First, the most often used smart device was a smart phone, which is used for over 5 hours a day and mainly used for SNS. Second, they utilized a smart device for language and major study during their spare time, wanted educational contents most and thought them useful for learning. Third, most of the students were positively aware of the necessity and learning effects of culinary education applications, and the response rate to utilize the application once a week was highest. Also, they hoped various recipes and simple cuisine and craftsman cooking. Therefore, the functions of SNS mostly often used by students should be added to promote interaction between teachers and students. And more contents should be made for students to use easily in moving or in their spare time. Furthermore, various videos of teaching and theoretical information should be included. And the applications focused on recipes and simple and craftsman cooking should be developed and uploaded on a school homepage and on popular portal sites so that students can easily utilize them.

• Journal of Digital Convergence
• /
• v.17 no.2
• /
• pp.463-473
• /
• 2019

This study aimed to investigate the relationship between soccer games of Korea vs. Japan and emotions of anti-Japan and anti-Korea, empirically. For that, this study selected 2,400 comments from Naver and 5CH where people could write their SNS comments on EAFF E-1 football championship 2017. The study results got by frequency analysis and one-way ANOVA were as follows. First, Korean showed amity with own team and hostility to the opponents, and stronger hostility toward Japan. Japanese showed hostility to own team, and it was especially strong when vs. Korea. Second, Korean showed stronger hostility toward Japan than others. Japanese showed stronger hostility to own team when vs Korea. From those results, this study could conclude that soccer games of Korea vs. Japan could be a field to express those emotions rather than effect on the emotions of anti-Korea and anti-Japan. By the empirical method of this study on the emotions of anti-Japan and anti-Korea unlike advance studies, this could receive favorable evaluation.

• Journal of Digital Convergence
• /
• v.18 no.5
• /
• pp.55-63
• /
• 2020

Recently, there is a strong interest in SW basic education for non-major students in universities, but SW non-majors are having a hard time learning. This paper proposes a class operation method that utilizes customized contents reflecting the interests of non-majors, rather than using existing learning contents for SW majors. The proposed method is to improve the education effects by increasing the learning motivation of SW non-majors. The paper shows a case study of A university, which has operated non-major SW basic education for more than five years. The case study analyzed the change of class satisfaction of students of pre- and post- learning group that reformed major-friendly contents about the same curriculum. As a result, the students of social sciences are interested in learning contents using public data that can examine the social and cultural phenomena of the country, and humanities students are interested in text contents such as novels, history books, and SNS articles. In addition to the understanding of the lectures, the class satisfaction was also greatly improved, and it showed that the major-friendly contents is useful for SW basic education of non-majors.

• The Journal of the Korea Contents Association
• /
• v.20 no.9
• /
• pp.541-548
• /
• 2020

Interest in emotions continues to rise around the world, including Korea, and in recent years, new styles such as new-tro, a new term referring to 'gaem-seong' of the social networking service generation, have emerged. Considering the strong influence of emotion on time and the environment, it is necessary to recognize the public's emotion about the current new style. Thus, in this study, 12 emotional vocabulary words were selected from the nine products applied with the new-tro style: want, cute, happy, pleasure, unique, cool, stylish, pretty, fun, like, joy, and special. According to the analysis of the survey, men's emotions were higher in order of "funny-cute-happy," and women's emotions were higher in order of 40s, 30s, 50s and 20s. Emotional vocabulary extracted from this study can be used to evaluate the sensitivity of objects to which the new-tro style is applied and will be utilized as specific emotional evaluation data through the analysis methods presented.