Distribution of the Fairy Pitta (Pitta nympha) in the South Korea: A focus on protected areas

Gil-Pyo Hong(홍길표),Jae-Hoon Kim(김재훈),Seul-Gi Seo(서슬기),So-Yeon Cho(조소연),Bo-Yeon Hwang(황보연),Jong-Hyun Park(박종현),Seung-Yeon Lee(이승연),Ga-Young Kim(김가영),Wan-Hee Nam(남완희),Ha-Cheol Sung(성하철) 한국조류학회 2021 한국조류학회지 Vol.28 No.2

국내 팔색조(Pitta nympha) 분포 현황을 알아보고자 전국 국립공원 등 보호지역 중심으로 총 19개 지역을 조사하였고, 전문가 네트워크를 통해 자료를 보강하였다. 전국 19개 지역을 조사한 결과 북한산, 지리산 등 내륙지역 7개 국립공원에서는 팔색조가 확인되지 않았고, 경남 거제, 남해, 해남, 장흥 고흥 등 남해안과 인접한 12개 지역에서 팔색조 서식이 확인되었다. 또한 전문가 네트워크를 통해 수집한 팔색조 출현 위치 정보 82건을 분석한 결과, 전국 8개 광역지자체 모두 팔색조 서식이 확인되었고, 내륙지역(26.8%)보다 해안지역(73.2%)에서 더 많이 출현하였다. 연구 결과를 종합해보면, 우리나라의 팔색조는 주로 제주도와 남해안 지역을 중심으로 많이 분포하며, 그 보다 적은 개체수가 내륙 지역에 넓게 분포하고 있는 것으로 나타났다. The present study investigated the current distribution of Fairy Pitta (Pitta nympha) in South Korea. A total of 19 study areas, including protected areas such as national and provincial parks in South Korea were surveyed, and additional data obtained from an expert network. According to the results, Fairy Pitta was absent in seven inland national parks, including Mt. Bukhan and Chiri parks. Fairy Pitta inhabited 12 areas near the southern coast of South Korea, including Geoje, Namhae, Haenam, Jangheung, Goheung, and Gyeongnam Province. The analysis results of 82 datasets obtained from experts with regard to the locations where Fairy Pitta have been spotted showed that the bird inhabits all the eight metropolitan regions in South Korea, and is more frequently spotted in coastal areas (73.2%) than in inland areas (26.8%). The findings demonstrate that Fairy Pitta is mainly distributed in Jeju Island and the southern coast of South Korea, and is distributed in inland areas at relatively lower numbers.

Skinny-128-384와 Romulus-N의 SITM 공격

박종현,김종성,Park, Jonghyun,Kim, Jongsung 한국정보보호학회 2022 정보보호학회논문지 Vol.32 No.5

SITM (See-In-The-Middle)은 부채널 정보를 차분 분석에 활용하는 분석 기법이다. 이 공격은 블록암호 구현시 마스킹 되지 않은 중간 라운드의 전력 파형을 수집하여 공격자의 차분 패턴을 만족하는 평문 쌍을 선별하고 이를 차분 분석에 활용하여 키를 복구한다. NIST 경량 암호 표준화 공모사업의 최종 후보 중 하나인 Romulus는 Tweakable 블록암호 Skinny-128-384+를 기반으로 한다. 본 논문에서는 SITM 공격을 14-라운드 부분 마스킹 구현된 Skinny-128-384에 적용하였다. 이 공격은 기 제안된 결과보다 depth를 한 라운드 증가한 것뿐만 아니라 시간/데이터 복잡도를 2^14.93/2^14.93으로 줄였다. Depth는 전력 파형을 수집하는 블록암호의 라운드 위치를 뜻하며, 이 공격에 대응하기 위해 부분 마스킹 기법 적용 시 필요한 적절한 마스킹 라운드 수를 측정할 수 있다. 더 나아가 공격을 Romulus의 Nonce 기반 AE 모드 Romulus-N으로 확장하였으며, Tweakey의 구조적 특징을 이용하면 Skinny-128-384보다 적은 복잡도로 공격할 수 있음을 보인다. See-In-The-Middle (SITM) is an analysis technique that uses Side-Channel information for differential cryptanalysis. This attack collects unmasked middle-round power traces when implementing block ciphers to select plaintext pairs that satisfy the attacker's differential pattern and utilize them for differential cryptanalysis to recover the key. Romulus, one of the final candidates for the NIST Lightweight Cryptography standardization competition, is based on Tweakable block cipher Skinny-128-384+. In this paper, the SITM attack is applied to Skinny-128-384 implemented with 14-round partial masking. This attack not only increased depth by one round, but also significantly reduced the time/data complexity to 2^14.93/2^14.93. Depth refers to the round position of the block cipher that collects the power trace, and it is possible to measure the appropriate number of masking rounds required when applying the masking technique to counter this attack. Furthermore, we extend the attack to Romulus's Nonce-based AE mode Romulus-N, and Tweakey's structural features show that it can attack with less complexity than Skinny-128-384.

국내 유무선통신 부문의 재무분석과 시사점

박종현,Park, J.H. 한국전자통신연구원 2010 전자통신동향분석 Vol.25 No.4

2000년대 이후 국내 통신시장이 인수합병을 통해 주요 사업자로 재편되면서 유무선과 차세대 신규 서비스를 중심으로 통신사업자간 경쟁이 치열하게 전개되고 있다. 통신사업자간 경쟁은 개별 서비스간 경쟁을 넘어 에코시스템의 경쟁으로 부상하고 있으며 이에 따라 요금경쟁, 결합서비스 제공경쟁, 신규 서비스 설비경쟁을 통한 고객지향적인 비즈니스 전략이 기업의 핵심전략으로 부각되고 있다. 이러한 시장에서의 경쟁은 사업자의 재무상황에 영향을 미치고 있다. 특히 국내 통신시장이 대부분 성숙기에 진입, 재무적 측면에서 매출이 정체되는 상황에서 마케팅 비용이 급증하는 현상이 나타나고 있다. 이에 본 고에서는 국내 주요 유무선 통신사업자의 재무추이를 분석하고 우리나라 통신시장의 지속적인 성장을 위한 시사점을 제시하였다.

관광지 교육을 위한 교육용 챗봇 큐레이터

박종현,김임여름,류기환,Park, Jong-hyun,Kim, Im-yeoreum,Ryu, Gi-Hwan 국제문화기술진흥원 2022 The Journal of the Convergence on Culture Technolo Vol.8 No.6

A chatbot is a responsive chatting program that can communicate with people through text or voice. 'Siri' and 'Bixby' installed in smartphones are also representative artificial intelligences that use the chatbot system. With the rapid development of chatbots, users in various fields have also begun to pay attention to the food service industry. As machine learning technology developed, it became possible to use more flexible conversations, and it soon expanded to the realm of education. Userㄴs interact through conversations with chatbots, and active interactions stimulate users' desires and at the same time have a positive effect on learning motivation. Recommendation system programs using chatbots not only recommend products according to users' preferences, but also provide various additional information. This study planned a program that combined the chatbot system and tourism service. The chatbot curator will develop into a form of inducing interest and curiosity to users through learning, and then facilitating the desire for tourism. The purpose of this study is to lay the foundation for a chatbot curator based on previous studies.

관광지 교육을 위한 교육용 챗봇 큐레이터

박종현,김임여름,류기환,Park, Jong-hyun,Kim, Im-yeoreum,Ryu, Gi-Hwan 국제문화기술진흥원 2022 The Journal of the Convergence on Culture Technolo Vol.8 No.6

A chatbot is a responsive chatting program that can communicate with people through text or voice. 'Siri' and 'Bixby' installed in smartphones are also representative artificial intelligences that use the chatbot system. With the rapid development of chatbots, users in various fields have also begun to pay attention to the food service industry. As machine learning technology developed, it became possible to use more flexible conversations, and it soon expanded to the realm of education. Userㄴs interact through conversations with chatbots, and active interactions stimulate users' desires and at the same time have a positive effect on learning motivation. Recommendation system programs using chatbots not only recommend products according to users' preferences, but also provide various additional information. This study planned a program that combined the chatbot system and tourism service. The chatbot curator will develop into a form of inducing interest and curiosity to users through learning, and then facilitating the desire for tourism. The purpose of this study is to lay the foundation for a chatbot curator based on previous studies.

블록암호 PRESENT에 대한 향상된 SITM 공격

박종현,김한기,김종성,Park, Jonghyun,Kim, Hangi,Kim, Jongsung 한국정보보호학회 2022 정보보호학회논문지 Vol.32 No.2

The SITM (See-In-The-Middle) attack proposed in CHES 2020 is a type of analysis technique that combines differential cryptanalysis and side-channel analysis, and can be applied even in a harsh environment with a low SNR (Signal-to-Noise Ratio). This attack targets partial 1^st or higher order masked block cipher, and uses unmasked middle round weakness. PRESENT is a lightweight blockcipher proposed in CHES 2007, designed to be implemented efficiently in a low-power environment. In this paper, we propose SITM attacks on 14-round masked implementation of PRESENT while the previous attacks were applicable to 4-round masked implementation of PRESENT. This indicates that PRESENT has to be implemented with more than 16-round masking to be resistant to our attacks.

하악 4전치 상실 시 임플란트 수복

박종현,Park, Jong hyun 대한심미치과학회 2022 Journal of the Korean Academy of Esthetic Dentistr Vol.31 No.2

The mandibular 4 anterior incisor restoration has small teeth and a small space, so the choice of abutment is always a concern. The mandibular 4 anterior incisor extraction is caused by periodontal disease, interdental embrasure greatly open is advantageous of oral hygiene management. Try to make it small diameter with custom abutment, it is limited to the space for the screw. Rather than setting the post site of one body implant to a horizontal cross-section, it is advantageous to set it to a longitudinal cross-section, for interdental embrasure formation. When using an internal bone level implant, rather than using a two-piece abutment, using a one-piece abutment can more effectively secure space for interdental embrasure.

요양병원 간호사의 전문직 자아개념과 직무만족

박종현,김세영,Park, Jong Hyun,Kim, Se Young 한국직업건강간호학회 2022 한국직업건강간호학회지 Vol.31 No.4

Purpose: The purpose of this study is to identify the relationship between professional self-concept and job satisfaction of nurses working in long-term care hospitals and to consider strategies to improve these factors. Methods: Data were collected using structured questionnaires given to 135 nurses working at six long-term care hospitals in C City. The data were analyzed with SPSS 23.0 by descriptive statistics, Cronbach's α, t-test, one-way ANOVA, a Scheffé test, and with Pearson's correlation coefficient. Results: The average score for professional self-concept was 2.78 points (out of 4 points), and the average score for job satisfaction was 3.11 points (out of 5 points). Significant differences were found for professional self-concept according to age, marriage status, total work experience, number of patients per nurse, and position, while job satisfaction showed significant differences depending on age and the number of patients in the ward. Professional self-concept and job satisfaction showed a significant positive correlation (r=.46, p<.001). Conclusion: In long-term care hospitals, it is necessary to provide education programs about nursing practice, communication, and leadership to enhance the professional self-concept of nurses. With regard to job satisfaction for nurses, it is imperative to improve the work environment of long-term care hospitals.

생활밀착형 ICT 융합 서비스 추진 동향 및 발전 방향

박종현,Park, J.H. 한국전자통신연구원 2012 전자통신동향분석 Vol.27 No.4

ICT와 다른 기술의 융합이 가속화되면서 주력 산업을 비롯하여 제조업과 서비스 산업에서 IT를 활용한 가시적 성과가 창출되고 있는 추세이다. ICT 융합은 기술발전, 국가 정책 수요증대, 일반 국민의 니즈 확산을 기반으로 안전, 건강, 교육, 복지, 환경 등 인간생활과 밀착된 분야로 외연이 확대되고 있다. 이에 본고에서는 생활밀착형 ICT 융합 서비스의 국내외 추진 동향을 살펴보고 공간 환경별 다양한 서비스 유형과 종류를 도출하며 향후 서비스 활성화를 위한 R&D 방향을 제언하고자 한다.

위치기반서비스(LBS)의 산업구조 분석 및 시장개발전략 방향

박종현,김문구,백종현,Park, Jong-Hyeon,Kim, Mun-Gu,Baek, Jong-Hyeon 한국통신학회 2003 정보와 통신 Vol.20 No.4