• 대한물리의학회지
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• 제15권4호
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• pp.155-161
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• 2020

PURPOSE: This study investigated the effect of a head-mounted display (HMD) based virtual reality (VR) cognitive rehabilitation program on the cognitive ability and activities of daily living in patients with mild cognitive impairment. METHODS: This study enrolled 5 mild cognitive impairment patients at the G welfare center in Gwangju metropolitan city. Patients were examined using the MMSEDS (Mini mental state examination-dementia screening). The VR cognitive rehabilitation program was applied twice a week for four weeks. The functional independence measure (FIM) and Loewenstein occupational therapy cognitive assessment-geriatric population (LOTCA-G) were compared before and after applying the VR cognitive rehabilitation program. RESULTS: Subsequent of application of the VR cognitive rehabilitation program, significant increase was observed in the LOTCA-G score. The FIM score was also perceived to increase, after the intervention, but was not statistically significant. CONCLUSION: Application of the VR cognitive rehabilitation program as a therapy is effective in improving the visual perception, and upper extremity executive ability, especially orientation, thinking organization, attention, and concentration.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.2
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• pp.33-37
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• 2006

Since 1993, the civil aviation community through RTCA (Radio Technical Commission for Aeronautics) and the ICAO (International Civil Air Navigation Organization) have been working on the definition of GNSS augmentation systems that will provide improved levels of accuracy and integrity. These augmentation systems have been classified into three distinct groups: Aircraft Based Augmentation Systems (ABAS), Space Based Augmentation Systems (SBAS) and Ground Based Augmentation Systems (GBAS). The last one is an implemented system to support Air Navigation in CAT-I approaching operation. It consists of three primary subsystems: the GNSS Satellite subsystem that produces the ranging signals and navigation messages; the GBAS ground subsystem, which uses two or more GNSS receivers. It collects pseudo ranges for all GNSS satellites in view and computes and broadcasts differential corrections and integrity-related information; the Aircraft subsystem. Within the area of coverage of the ground station, aircraft subsystems may use the broadcast corrections to compute their own measurements in line with the differential principle. After selection of the desired FAS for the landing runway, the differentially corrected position is used to generate navigation guidance signals. Those are lateral and vertical deviations as well as distance to the threshold crossing point of the selected FAS and integrity flags. The Department of Applied Science in Naples has create for its study a virtual GBAS Ground station. Starting from three GPS double frequency receivers, we collect data of 24h measures session and in post processing we generate the GC (GBAS Correction). For this goal we use the software Pegasus V4.1 developed from EUROCONTROL. Generating the GC we have the possibility to study and monitor GBAS performance and integrity starting from a virtual functional architecture. The latter allows us to collect data without the necessity to found us authorization for the access to restricted area in airport where there is one GBAS installation.

• Genomics & Informatics
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• 제19권1호
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• pp.6.1-6.10
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• 2021

Vascular endothelial growth factor (VEGF) is expressed at elevated levels by most cancer cells, which can stimulate vascular endothelial cell growth, survival, proliferation as well as trigger angiogenesis modulated by VEGF and VEGFR (a tyrosine kinase receptor) signaling. The angiogenic effects of the VEGF family are thought to be primarily mediated through the interaction of VEGF with VEGFR-2. Targeting this signaling molecule and its receptor is a novel approach for blocking angiogenesis. In recent years virtual high throughput screening has emerged as a widely accepted powerful technique in the identification of novel and diverse leads. The high resolution X-ray structure of VEGF has paved the way to introduce new small molecular inhibitors by structure-based virtual screening. In this study using different alkaloid molecules as potential novel inhibitors of VEGF, we proposed three alkaloid candidates for inhibiting VEGF and VEGFR mediated angiogenesis. As these three alkaloid compounds exhibited high scoring functions, which also highlights their high binding ability, it is evident that these alkaloids can be taken to further drug development pipelines for use as novel lead compounds to design new and effective drugs against cancer.

• 융합정보논문지
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• 제9권4호
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• pp.100-108
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• 2019

연구의 목적은 대학생의 스마트폰 의존도가 진로태도성숙에 미치는 영향과 그 경로에서 대인관계 문제의 매개효과를 분석하는데 있다. 이를 위해 서울과 수도권에 소재한 4개 대학의 학생들을 대상으로 설문을 진행하여 총 221부로 실증적인 검증을 위해 구조방정식을 실행하였다. 그 결과 첫째, 대학생의 일상생활 장애와 가상세계 지향이 높으면 대인관계 문제에 정적인 영향을 주는 것으로 나타났다. 둘째, 대학생의 일상생활 장애와 가상세계 지향이 높으면 진로태도성숙에 부적인 영향을 미치는 것으로 나타났다. 셋째, 대학생의 대인관계 문제는 진로태도성숙에 부적인 영향을 미치며, 스마트폰 의존도와 진로태도성숙 관계에서 모두 완전매개하고 있음을 파악하였다. 따라서 본 연구결과는 대학생의 진로태도성숙을 증진시키는 다양한 프로그램의 개발과 적용에 기초자료로 사용될 수 있음을 시사하였다.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.219-228
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• 2021

The adoption of new technology in any organization will represent change, and such change needs user acceptance for its successful implementation. Saudi Arabian health centers are no exception; therefore, the current study will investigate the adoption of new technology, namely that of virtual reality (VR), within health centers in Saudi Arabia and specifically in Riyadh City. This study explores the current state of VR technology adoption, factors that influence such adoption, and the extent of this technology's efficiency when it is used for vaccinating children. The data were collected from two samples: workers in vaccination clinics who responded to a survey and a group of children who participated in the VR technology experiment. The current study proposed a model based on the unified theory of acceptance and use of technology 2 (UTAUT2), with the addition of two variables: personal innovativeness and satisfaction. The results indicated that the respondents' perceptions regarding the health centers' infrastructure in terms of adopting VR were moderate. Among the factors affecting VR adoption, satisfaction, personal innovativeness, and behavioral intention were identified as vastly influential factors. From the eight hypotheses, six were found to be supported, with their factors significantly influencing behavioral intention with regard to VR technology adoption. Besides, the experiment concerning the use of VR technology on children verified the technique's high efficiency in terms of providing pain management and fear removal. These findings support the continuity of VR technology use, expand its future application fields, and integrate this study into the literature on technology acceptance models for VR adoption, as limited studies have covered this topic; consequently, this will benefit future research in this field.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.25-34
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• 2022

Today, further education of adults in the UK is one of the developing areas of continuing education. The Open University with distance learning, in the process of which innovative forms and methods based on computer and telecommunication technologies are used, is particularly successful in the organization of additional education of the adult population. The advantages of distance learning, multimedia - the latest information technologies, which provide the combination of graphic images, video, sound with the help of modern computer tools, are noted. The basic principles and forms underlying the technologies and forms of work with the elderly are defined. The international experience of implementing "Universities of the Third Age" is summarized. The most widespread approach in adult education in Great Britain is informational. The use of computer technologies motivates a new paradigm in educational methods and strategies, which requires new approaches, forms of learning, and innovative ways of delivering educational materials to adult learners. Information technologies have gained great popularity in such activities as distance learning, online learning, assistance in the education management system, development of programs and virtual textbooks in various subjects, online search for information for the educational process, computer testing of students' knowledge, creation of electronic libraries, formation of a single scientific electronic environment, publication of virtual magazines and newspapers on pedagogical topics, teleconferences, expansion of international cooperation in the field of Internet education. The information technology of synchronous distance learning "online" has gained considerable popularity in the educational process today. A promising direction is the use of multimedia technologies in educational activities to create a design of a virtual computer environment by decoding audiovisual information.

• 지식경영연구
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• 제23권2호
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• pp.1-13
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• 2022

메타버스라는 사이버 초현실 세상이 다가오고 있다. 팬데믹으로 인해 원격근무와 원격학습 또는 사회적 격리를 경험한 이들에게는 행동의 제약과 한계를 뛰어넘어 상상의 세상으로 안내하며, 새로운 사회적 관계를 만들어 가도록 도와주는 메타버스는 사이버 세계의 오아시스와 같은 세상이다. 다양한 플랫폼들을 중심으로 메타버스 생태계가 진화하고 있는 가운데 실무 및 학계에서 다양한 논의가 오가고 있지만 아직까지는 이러한 변화를 이끌어갈 다양한 학술적 논의가 부족한 실정이다. 이에 본 논평에서는 현재 논의 중인 메타버스의 개념과 현황에 대해서 정리하고 메타버스가 성장하고, 사회에 의미있는 가치를 창출하기 위해 필요한 핵심 연구 주제와 분야별 세부 연구 방향에 대해서 제안하고자 한다. 이를 통해 학계에서 다양한 관점의 메타버스 연구가 시의적절하게 수행되고 관련 연구들을 통해 건강하고 바람직한 메타버스 생태계가 조성되고 진화해 가기를 바란다.

• 한국언론정보학보
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• 제62권
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• pp.223-243
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• 2013

언론 조직이 표방하는 가치는 때로 충돌한다. 사주는 언론의 사회적 책임과 연관된 가치를 실현하는 보편적인 저널리스트로서의 역할을 기자들에게 주문하면서도, 결정적인 순간에는 조직의 존립이나 이익과 연관된 가치를 따르라고 요청한다. 이러한 현상은 사주나 언론 조직이 실질적으로 중시하는 가치가 따로 있기 때문에 발생하는 일이다. 이 논문은 조선일보를 사례로 삼아, 언론 조직이 진정으로 강조하는 가치가 무엇이며 그러한 가치가 지향하는 조직문화가 무엇인지 살펴볼 것이다. 이러한 목적을 위해 조선일보 안에서 수행되는 기념식이나 의례 같은 각종 퍼포먼스를 분석한다. 조직문화의 토대가 되는 가치는 퍼포먼스에 내포되어 있기 때문이다. 연구 결과에 따르면, 조선일보의 사주가 기자들에게 강조하는 핵심 가치는 '인화'이다. 인화의 가치가 강조되는 한, 보편적인 저널리스트로서의 책무보다는 조선일보라는 기업의 이익에 충실한 조직 구성원으로서의 역할을 다하는 것이 기자들에게 더 중요한 덕목으로 간주된다. 인화의 가치를 강조하는 조선일보의 조직문화를 언론계 전체로 일반화할 순 없겠지만, 우리는 이와 같은 연구를 통해 조직 중심적인 가치를 우선시하는 조직문화가 기자들의 저널리즘 행위에 대해 어떤 함의를 가질 수 있을지에 대해서도 생각해 볼 수 있다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2475-2480
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• 2003

A control system design based on coupled nonlinear oscillators (CNOs) for a self-organized swarm system is presented. In this scheme, agents self-organize to flock and arrange group formations through attractive and repulsive forces among themselves using CNOs. Virtual agents are also used to create richer group formation patterns. The objective of the swarm control in this paper is to follow a moving target with a final group formation in the shortest possible time despite some obstacles. The simulation results have shown that the proposed scheme can effectively construct a self-organized multi-agent swarm system capable of group formation and group immigration despite the emergence of obstacles.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 학술대회지
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• pp.703-706
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• 2004

Grid computing represents the fundamental computing shift from a localized resource computing model to a fully-distributed virtual organization with shared resources. Accounting is one of the main obstacles to widespread adoption of the grid. Accounting has until recently, been a sparsely-addressed problem, particularly in practice. In this paper, we design and implement the accounting information gathering system. Implemented system is based on OGSA, following GSAX framework of RUS-WG in GGF. And the schema of gathered and serviced accounting information is following Usage Record Fields of UR-WG in GGF. Also, the accounting information integrating and monitoring tool for system management in the grid environment are implemented.