• 무역학회지
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• 제47권6호
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• pp.21-37
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• 2022

This study sought to look at why Facebook and Twitter, which have dominated the social media market, are moving away from other services. To this end, we sought to identify the causes of churn in terms of firm-level strategic direction and resource allocation, which have not been actively presented to the studies. For this purpose, this study divides the social media firm's strategies into horizontal expansion strategy and vertical integration strategy based on the existing reports and researches, and how each of the representative firms' strategies affects users' switching behavior. As a result, there was a significant difference in the strategic direction of the social media firm, when a horizontal expansion strategy is taken, user's switching intention is higher than when a vertical integration strategy is taken. In addition, the switching intention according to the level of dependence showed that the lower the dependence on social media, the higher the intention to switch to other media. The findings are expected to provide highly realistic and concrete strategic alternatives for a variety of economic actors, such as individuals and companies who want to do business using social media.

• 보건행정학회지
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• 제16권4호
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• pp.68-85
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• 2006

With the competitive environment accelerating in healthcare industry, the hospital network system is considered as one of the strategies for clinical and managerial efficiency. This study was intended to offer a theoretical view on the hospital network system and to analyze the current network status of hospitals in Korea. Specifically, network types were classified based on the criteria modified from previous studies, and were used to describe and compare the scope and intensity of associated activities. The questionnaire survey was conducted with 237 hospitals during the period of December 27 2005 to January 25 2006. Above 90% of tertiary and secondary care hospitals were under the network system, while only 20% of primary care clinics were affiliated. In general, the scope and intensity of network activities was limited. Vertical and/or clinical integration was more common than horizontal and/or managerial integration. Three most frequent types of hospital network systems were clinical-vertical integration (Type A), clinical/managerial-vertical integration(Type B), and clinical/managerial-horizontal /vertical integration (Type C). Such network types differentiated significantly different features of affiliated hospitals and network systems. The affiliation duration to the network system was the only significant factor influencing on the network type. The strategic approach to the network system was emphasized for hospitals to increase the potential advantage of hospital network systems.

• 한국콘텐츠학회논문지
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• 제18권9호
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• pp.594-605
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• 2018

본 연구는 실용음악전공 대학생의 긍정심리자본, 감성지능, 문화성향이 갈등관리방식에 어떠한 영향을 미치는가를 밝혀내는데 목적을 두고 있다. 실용음악전공 대학생 283명을 대상으로 설문조사가 이루어졌으며 상관관계분석과 다변인 회귀분석으로 연구문제를 검증하였다. 분석결과를 요약해 보면 다음과 같다. 첫째, 긍정심리자본이 많은 대학생일수록 갈등상황에서 통합방식과 타협방식을 구사하는 것으로 나타났다. 특히 자기효능감은 통합방식과 타협방식, 낙관성은 회피방식과 복종방식, 희망은 지배방식에 가장 큰 영향력을 미치는 것으로 밝혀졌다. 둘째, 감성지능이 높은 대학생일수록 갈등상황에서 통합방식, 타협방식을 구사하는 반면 회피방식과 복종방식은 적게 사용하는 것으로 나타났다. 특히 타인 감성이해는 통합방식, 복종방식, 타협방식, 자기감성이해는 회피방식, 감성조절은 지배방식에 가장 큰 영향을 미치는 것으로 밝혀졌다. 셋째, 수평적/수직적 집단주의와 수평적 개인주의 성향을 가진 대학생일수록 갈등상황에서 통합과 타협방식을 많이 사용하는 것으로 나타났다. 특히 수평적 개인주의 문화성향은 통합방식과 타협방식, 수평적 집단주의 문화성향은 복종방식, 수직적 개인주의 문화성향은 지배방식, 수직적 집단주의 문화성향은 회피방식에 가장 큰 영향력을 발휘하는 것으로 밝혀졌다.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제52권1호
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• pp.55-59
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• 2003

With the progress of optical communication technology recently, the development of micro actuator using MEMS technology has been made for optical switching. The actuation types are various; electrostatic, electromagnetic, and electrostatic +electromagnetic etc. Among them, the electrostatic type is the most popular because of the relative ease of fabrication, integration and shielding as well as low power consumption. However, it needs a high voltage to generate a larger driving force. To overcome this problem, we proposed a new type of electrostatic actuator with an extra vertical electrode in addition to the horizontal one. The vertical electrode also lays a role of making the stable angular rotation as a stopper. From the theoretical analysis and experiment, we find the actuation voltage can be reduced up to 50 % of that of the conventional one.

• 대한감각통합치료학회지
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• 제21권2호
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• pp.12-23
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• 2023

목적 : 감각통합치료와 가정프로그램의 중재병행이 다운증후군 아동의 시각적 주의력에 미치는 효과를 알아보고자 하였다. 연구방법 : 본 연구는 다운증후군 아동 1명의 대상으로 개별실험연구를 진행하였으며, 감각통합치료 중재는 주 1회씩 16주간, 가정프로그램은 주 4회씩 16주간 시행하였다. 대상 아동에게 중재 후 시각적 주의력의 변화를 측정하였다. 결과 : 중재 후 물체 주시, 물체 수평적 추시, 물체 수직적 추시 시간은 기초선 기간에 비해 평균값이 상승하였다. 중재 기간에 관찰된 물체 주시, 물체 수평적 추시, 물체 수직적 추시가 기초선 기간의 ±2 표준편차보다 높게 나타났다. 결론 : 본 연구를 통해 감각통합치료와 가정프로그램의 중재병행이 다운증후군 아동에게 시각적 주의력과 시지각 향상된 것을 확인하였으며, 효과적인 중재 방법을 제시하였다는 점에 의의가 있다.

• 만화애니메이션 연구
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• 통권21호
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• pp.71-84
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• 2010

현재 국내 영화 산업의 배급 구조는 멀티플렉스 체인으로 시장 대부분을 구성하고 있다. 이로 인해 대부분의 중소 영세 상영관들은 시장에서 퇴출되고 있으며, 멀티플렉스 체인은 수직결합 구조의 독점화로 시장 형성을 하고 있다. 춘천에서는 1개월간의 멀티플렉스 상영관의 상영 중단은 수직결합 구조의 문제를 발생시켰고, 이 문제현상으로 인해 많은 영향을 발생시켰다. 특히 문화적 욕구에 대한 영향이 나타났으며, 불법 콘텐츠로의 접근 문제를 야기하였다. 이 연구에서는 국내 수직결합 구조의 멀티플렉스 극장이 시장을 점유해 나가는 과정과 함께 병행되었던 중소 영세 상영관의 몰락이 진행되는 과정을 살펴보고, 이로 인해 수직결합 구조의 상영관이 수평결합 구조의 상영관을 시장에서 퇴출시키는 과정이 완성된 춘천 지역에서, 2008년 9월 27일부터 2008년 10월 30일까지 춘천CGV가 상영 중단되는 현상을 통해 발생되었던 영향을 설문을 통해 파악하여 수직결합 구조가 문제가 생기면 발생하는 영향을 알아보았다. 영화 산업의 주요 소비자인 20대 계층은, 멀티플렉스 휴관으로 인하여 개봉 영화에 대해 접근성이 약화되면, 불법 콘텐츠로의 접근 충동을 느끼는 영향을 받고 있다. 개봉 시기에 관람을 놓친 영화에 대해서는 상영관 방문보다는 불법 콘텐츠나 기록매체로 출시되는 영화를 선호하고 있다. 또한, 영화가 개봉되는 시기에 관람을 해야 하는 시기 적절성에 대한 영향을 받고 있었다. 즉, 개봉 영화에 대한 불법적 접근 방식, 기록매체를 활용한 상시 접근성, 개봉에 대한 시기 적절성이 관람 행태에 영향을 미치고 있다.

• Journal of Positioning, Navigation, and Timing
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• 제8권2호
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• pp.87-94
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• 2019

The Global Navigation Satellite System (GNSS) Real-Time Kinematic (RTK) positioning has been widely used in geodesy, surveying, and navigation fields. RTK can benefit enormously from the integration of multi-GNSS. In this study, we develop a GPS/BeiDou Navigation Satellite System (BDS) RTK integration algorithm for long baselines ranging from 128 km to 335 km in South Korea. The positioning performance with GPS/BDS RTK, GPS-only RTK, and BDS-only RTK is compared in terms of the positioning accuracy. An improvement of positioning accuracy over long baselines can be found with GPS/BDS RTK compared with that of GPS-only RTK and that of BDS-only RTK. The positioning accuracy of GPS/BDS RTK is better than 2 cm in the horizontal direction and better than 5 cm in the vertical direction. A lower Relative Dilution of Precision (RDOP) value with GPS/BDS integration can obtain a better positional precision for long baseline RTK positioning.

• 대한조선학회지
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• 제8권2호
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• pp.1-12
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• 1971

This paper describes, firstly, on analytical method of computing the eigenvalues of vertical vibration of ships, taking into account for the distribution of hull weight including added mass and the effect of shear deflection and rotary inertia. The frequency equation is solved by Galerkins method into form of numerical integration. Applying the above described equation, model experiment of vertical vibration was carried out in order to varify the validity of the analytical method of vertical vibration. The model, which was made of acrylite plate, was ship-shaped wall-sided vessel with bulkheads, deck openings, and fore and after peak tank at both ends. The results of experiments carried out both in air and on water showed that the observed natural frequencies and the observed patterns of natural modes of vibration were in good agreement with analytically calculated values for 2,3, and 4-node vibration.

• 한국실내디자인학회논문집
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• 제22권4호
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• pp.23-32
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• 2013

This study represents something in common and differences of organic characteristics between early modern architecture and contemporary architecture analysing F. L. Wright's Robie House and Toyo Ito's Sendai Mediatheque. A natural organic body cannot be separated from the natural environment, and each part of an architecture has each own property and forms a whole at the same time. That is a basic concept of organic architecture, and a framework for analysis is set up based on it. The followings are similarities and differences of organic concept and interpretation between Wright's Robie House and Ito's Sendai Mediatheque First, Wright' Robie house unites with the natural surrounding, using a physically close connection to the ground. In contract, Ito's Mediatheque shows characteristics of noncentural and fluidic space that are metaphorically reflecting tangible and intangible of factors in modern city, where there is an ambiguous physical boundary between architecture and urban environment. Next, floors, walls and ceilings of Wright's housing as for basic building blocks are physically separated and at the same time form formative unity from the point of view of a physical and structural organic body. And continuous flow of faces of separated walls form an organism united with the nature from a physical aspect. On the contrary to this, there is an no-boudary and floating organic architecture of integrated structure from ambiguous setting of relation between architecture and urban space in Ito's architecture. Especially, Mediatheque shows semantic integration of floating urban environmental factors through horizontal and vertical integration of horizontal slabs, vertical pipes, and skins. Last, horizontal and vertical factors of Wright' Housing is appreciated as an basic experienced structure in terms of spacial perception and fluidic inner spaces in Wright's housing is completed with a series of spatial experiences in a visual sense. On the other hand, no-boundary and floating space of Ito's architecture accept user's physical and virtual body. Especially, there is an integration transcending beyond time and space, accepting an imaginary body and events with the course of time at Ito's Mediatheque.

• 국제초고층학회논문집
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• 제10권1호
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• pp.55-62
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• 2021

The paper reports the result of a 2-year long research conducted by CTBUH on the design possibilities enabled by the Ropeless and Multidirectional elevator systems, investigating how such a significant innovation (or better to say revolution) in the vertical transportation could affect tall buildings first and cities then. The purpose of the study is to prefigure the adoption of ropeless and multidirectional cabins for tall buildings mobility, with the aim to overcome the evolutionary bottleneck of the high-rise building type due to the exclusively vertical direction of transport, which limited, over the years, the design possibilities in terms of height, shape and relations with the surrounding environment. CTBUH research team, together with professionals in the field and supporting academic advisors, developed a series of design considerations on plan organizations, dispatching alternatives and on the integration of horizontal direction in the circulation, with the aim of anticipating potential and criticality arising from the application of ropeless and multidirectional systems.