• 산업융합연구
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• 제20권1호
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• pp.63-68
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• 2022

학교와 회사 건물의 복도 천장에는 보통 공용으로 사용할 수 있는 와이파이 엑세스 포인트(WiFi Access Point)가 설치되어 있다. 철문과 같이 신호 감쇠가 큰 재료로 구성된 출입문을 통해 와이파이 신호가 들어오는 건물 구조일 경우 문을 닫으면 인터넷 연결이 자주 끊기거나 실패하게 된다. 본 연구는 이를 해결하기 위해 라즈베리파이(Raspberry Pi)와 보조 배터리를 이용하여 경제적이고 이동 가능한 와이파이 확장기를 구현한다. 시중에 판매되는 와이파이 확장기는 전원 플러그가 위치한 곳에만 설치해야 하는 장소의 제약이 있고 스마트폰 핫스팟 기능에 기반한 와이파이 확장은 일부 고급형 기종에서만 가능하다는 단점이 있다. 그러나 제안 시스템은 출입문 안쪽에서 와이파이 수신 신호가 가장 좋은 위치에서 설치 가능하므로 원신호의 손상 가능성을 최소화하면서 와이파이 범위를 확장할 수 있다. 그 결과 출입문이 닫힌 환경에서 사무실내 전파 음영을 해소하고, 웹브라우징과 720p 해상도의 동영상 스트리밍 시청이 가능함을 실험을 통해 확인한다.

• 인간식물환경학회지
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• 제24권3호
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• pp.301-309
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• 2021

Background and objective: The purpose of this study is to analyze the case of healing experience for lifestyle and environmental diseases through life and activities in the forest from the perspecitive of critical realism, and how the causal power and mechanism of the healing experience relate to forest healing factors and programs. Methods: 93 video data of people who started living in the forest for disease treatment were analyzed using a qualitative content analysis method from the perspective of critical realism. Categories for analysis include general categories (age, duration, occupation, disease name), forest therapy categories (climate therapy, plant therapy, water therapy, diet therapy, kinesiotherapy, psychotherapy), and other categories (ecology, learning and management, life tools), etc., and the unit of analysis is the context unit. Results: 1) The diseases that motivated life in the forest were digestive system diseases, lung diseases, cardiovascular diseases, endocrine system diseases, and various lifestyle-related diseases and environmental diseases in similar proportions. This indicates that forest life does not have specificity to respond to specific diseases, but provides treatment and recovery for all lifestyle and environmental diseases. 2) Among the forest therapies, climate therapy and plant therapy are related to the climatic and residential environment in the forest where 'natural persons' live. And others such as water therapy, diet therapy, kinesiotherapy, psychotherapy indicate the change from the lifestyle that caused the disease to the lifestyle for treatment and recovery. Conclusion: Life and activities in the forest provide an environment for treatment and recovery in which the healing principles such as aromatherapy, nutritional and dietary therapy, kinesiotherapy, and emotional psychotherapy are integrated in the 'real world'.

• International Journal of Computer Science & Network Security
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• 제22권5호
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• pp.154-162
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• 2022

Digital marketing tools are actively used in managing the development of park and recreation complexes to familiarize the population with the objects of natural heritage. This article aims to empirically evaluate digital marketing tools for popularizing the park and recreational complexes. The methodology was based on the concept of ecosystem value of park and recreation complexes as a natural heritage site. These methods included: identifying and selecting websites with information about park and recreation complexes in Slovakia and Ukraine. structural analysis of the main channels of online details about natural parks. Assessing the current state of online identity of the studied sites from the perspective of Internet users. The results indicate that to manage the development of park and recreational complexes developed their driven official websites in the Internet space, on which sections structure the information with the allocation of data on tourism and recreational potential. The article identifies additional digital marketing tools for managing the development of park and recreation complexes, particularly social networks and tourist websites. There is a sufficient amount of information about tourist recreation sites within these natural parks and tourist routes. Among the main problems of the websites: the information on the websites is entirely textual, there is a lack of sufficient data on social networks, despite the created official pages, there is no video content, which was more attracted tourists and visitors, allowing a visual assessment of the tourist potential; there is a problem of many communication channels to present the natural heritage of the countries. The research proves that the website is the primary and most common digital marketing tool for natural heritage, structuring information about tourism potential and recreation.

• 산업융합연구
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• 제19권6호
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• pp.59-66
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• 2021

전 세계적으로 코로나 19(COVID-19)의 범유행 장기화는 전 산업에 걸쳐 큰 영향을 주었다. 특히 교육분야에서 온라인 수업(비대면)은 학습 준비 부족과 학습자의 수업 불만 등 온라인 수업에 부정적인 인식이 일부 존재했다. 2020년 실태 조사에 따르면 비대면 수업에 비중은 약 56%이고, 수업 형태가 스트리밍 실시간 수업과 영상 콘텐츠 기반 수업이 대부분을 차지했다. 본 연구는 2020~021년 설문 조사(소프트웨어 활용 실습수업 대학생)를 통해 온라인 수업이 해결해야 할 문제점을 실증 분석하고, 세부 프로그램과 개발 방안(구현 결과)에 대하여 설명한다. 본 연구는 코로나 사태 종식 이후 각 교육기관의 온라인 학습 개발의 발전에 이바지하고자 한다.

• 산업융합연구
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• 제20권2호
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• pp.29-36
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• 2022

디지털 사회를 위한 AI와 빅데이터 시대의 컴퓨팅 사고는 컴퓨터가 실행할 수 있는 방식으로 우리가 해결하고자 하는 문제와 솔루션을 표현하는 일련의 문제해결 방법을 의미한다. 컴퓨팅 사고는 컴퓨터 과학의 기본 개념을 도출함으로써 문제를 해결하고 시스템을 설계하고 인간의 행동을 이해하는 것으로, 학생들에게는 어려운 문제와 애매한 퍼즐을 맞추는 접근법이다. 본 논문에서 우리는 컴퓨팅 사고를 댄스 동작과 융합하여 학생들이 문제를 해결할 수 있는 수업 모델을 개발하였다. 개발된 수업 모델을 가지고 ◯◯대학교 1학년 예비교원 93명을 대상으로 1학기 동안 수업한 결과, 수업 참가자들은 비디오 수준의 만족스러운 알고리즘을 만들어 냈다. 또한, 제안된 모델이 수업 참여 학생들의 컴퓨팅 사고 이해에 크게 기여함을 알 수 있었다.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.303-311
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• 2022

The tremendous growth of the Internet of things is unbelievable. Many IoT devices have emerged on the market over the last decade. This has made our everyday life easier inside our homes. The technology used at home has changed significantly over the past several decades, leading to what is known today as the smart home. However, this growth has also brought new challenges to our home security and privacy. With the smart home becoming more mainstream, cybersecurity issues have become a fundamental concern. The smart home is an environment where heterogeneous devices and appliances are interconnected through the Internet of Things (IoT) to provide smart services to residents. These services include home climate control, energy management, video on demand, music on-demand, remote healthcare, remote control, and other similar services in a ubiquitous manner. Smart home devices can be controlled via the Internet using smartphones. However, connecting smart home appliances to wireless networks and the Internet makes individuals vulnerable to malicious attacks. Remote access within the same environment or over the Internet requires an effective access control mechanism. This paper intends to shed light on how smart home devices are working as well as the type of security and privacy threats of the smart home. It also illustrated the types of authentication methods that can be used with smart home devices. In addition, a comparison of Smart home IoT-based security protocols was presented along with a security countermeasure that can be used in a smart home environment. Finally, a few open problems were mentioned as future research directions for researchers.

• 한국컴퓨터정보학회논문지
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• 제27권10호
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• pp.211-222
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• 2022

본 연구는 코로나 이전과 코로나 이후의 강의평가를 비교 분석하여, 코로나 이후 시대에 대학수업에서 고려해야 되는 사항은 무엇인지를 도출하고자 하였다. 이를 위해 서울시 소재 A대학의 4개년도 자료를 이용하였고, 코로나 이전은 2018년~2019년까지, 코로나 이후는 2020년~2021년까지 자료를 이용하였다. 연구결과에 의하면, 교양의 경우에는 "과제"가 코로나 이전과 이후와 상관없이 빈도 및 연결중심성(DC)이 가장 가장 높은 단어로 나타났으나, 전공에서는 "이해"가 가장 중요한 단어로 나타났다. 에코 네트워크의 분석결과, "동영상" 및 "비대면수업"의 경우에는 어렵다고 느끼고 있으며, 교수와 학생간의 "상호작용"이 중요하다고 생각하고 있었다. 결론적으로 코로나 이후의 교양 수업에서는 과제에 대한 비중을 낮추고, 학생과의 상호작용을 높이는 것이 중요하며, 전공의 경우에는 비대면 수업보다는 대면수업으로 운영하고, 동영상도 어렵지 않게 내용을 구성하는 것이 필요하다는 것을 확인하였다.

• 수산해양기술연구
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• 제58권3호
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• pp.262-271
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• 2022

The purpose of this study is to investigate the status of admission and employment in fisheries high schools (FHS) and to consider ways to revitalize FHS through substantialization. The recruitment rate of new students in FHS decreased from 97.4% in 2016 to 83.2% in 2020. The aging training ship that FHS needs to improve most urgently is being jointly used by FHS across the country, and the construction of a joint training ship managed by the Korea Institute of Maritime and Fisheries Technology is being promoted. The average employment rate for FHS by year was 40.2-59.4%, and the fisheries-related employment rate was low at 31.0-38.9%. On the other hand, the acquisition rate of certificate of competence was 37.5-52.0%, and the rate of employment on board of those who obtained the certificate of competence was 42.9-59.8%. In order to secure new students and improve the recruitment rate, we operate experiential classrooms that reflect the characteristics of training ships and departments and conduct public relations activities using sns, publicity video ucc, YouTube, etc. It will be necessary to expand opportunities for fisheries-related vocational experience through active career exploration and elective courses in the FHS credit system. Finally, it is judged that fisheries related government agencies, industries and local governments need to improve their awareness of FHS and plan to support fisheries manpower nurturing in order to attempt the vitalization of FHS.

• 스마트미디어저널
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• 제12권7호
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• pp.18-26
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• 2023

본 연구에서는 YOLOX와 OC-SORT를 기반으로 한 소 행동 인식시스템을 제시하였다. YOLOX는 실시간으로 목표를 감지하고 소의 위치와 행동 정보를 제공한다. OC-SORT 모듈은 비디오에서 소를 추적하고 고유 ID를 할당하는 역할을 한다. 양적 분석 모듈은 소의 행동과 위치 정보를 분석한다. 실험 결과, 우리의 시스템은 목표 감지와 추적에서 높은 정확도와 정밀도를 보여주었다. YOLOX의 평균 정확도(AP)는 82.2%, 평균 재현율(AR)는 85.5%, 매개변수 양은 54.15M, 계산량은 194.16GFLOP이었다. OC-SORT는 복잡한 환경과 가림막 상황에서도 높은 정밀도의 실시간 목표 추적을 유지할 수 있었다. 소의 운동 변화와 승가행동의 빈도를 분석함으로써, 제안 시스템은 소의 발정 행동을 더 정확하게 판별하는데 도움을 줄 수 있다.

• 대한치위생과학회지
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• 제5권2호
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• pp.35-44
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• 2022

Background: This study was aimed at investigating the perception of social network service (SNS) users regarding dental office visits and determining the proportion of dental SNS users among general SNS users. Methods: We surveyed 177 adults using SNSs. Dental SNS characteristics were classified into information provision, interaction, recency, reliability, and interest, and the recognition level of each area was surveyed on a 5-point scale. The total number of items was 17, including three information provision, three interaction, four recency, four reliability, and three interest items. Results: Among the five domains, the recognition level was the highest for reliability (3.51 points) and the lowest for interest (2.94 points). Among the 17 items, the recognition level was the highest for "Educational information provided by dental SNS is valuable" at 3.60 points, "Dental SNS educational video is useful for information sharing and dental knowledge improvement" at 3.53 points, and "The perceived educational information of dental SNS is reliable" at 3.51 points. Participants in their 20s and 30s had higher scores for being up-to-date (3.33 and 2.88 points, respectively) and reliability (3.59 and 3.09 points, respectively) than those in their 40s or older. The recognition level of all areas of dental SNS characteristics was significantly higher for experienced dental SNS users than for nonexperienced ones. Conclusions: The results of this study suggested that dental institutions should consider ways to utilize SNS for patient management and education and that dental SNS-related contents should contain educational and reliable information to help SNS users manage their oral health.