• Archives of Plastic Surgery
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• v.47 no.3
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• pp.242-249
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• 2020

Background The Exoscope is a novel high-definition digital camera system. There is limited evidence signifying the use of exoscopic devices in microsurgery. This trial objectively assesses the effects of the use of the Exoscope as an alternative to the standard operating microscope (OM) on the performance of experts in a simulated microvascular anastomosis. Methods Modus V Exoscope and OM were used by expert microsurgeons to perform standardized tasks. Hand-motion analyzer measured the total pathlength (TP), total movements (TM), total time (TT), and quality of end-product anastomosis. A clinical margin of TT was performed to prove non-inferiority. An expert performed consecutive microvascular anastomoses to provide the exoscopic learning curve until reached plateau in TT. Results Ten micro sutures and 10 anastomoses were performed. Analysis demonstrated statistically significant differences in performing micro sutures for TP, TM, and TT. There was statistical significance in TM and TT, however, marginal non-significant difference in TP regarding microvascular anastomoses performance. The intimal suture line analysis demonstrated no statistically significant differences. Non-inferiority results based on clinical inferiority margin (Δ) of TT=10 minutes demonstrated an absolute difference of 0.07 minutes between OM and Exoscope cohorts. A 51%, 58%, and 46% improvement or reduction was achieved in TT, TM, TP, respectively, during the exoscopic microvascular anastomosis learning curve. Conclusions This study demonstrated that experts' Exoscope anastomoses appear non-inferior to the OM anastomoses. Exoscopic microvascular anastomosis was more time consuming but end-product (patency) in not clinically inferior. Experts' "warm-up" learning curve is steep but swift and may prove to reach clinical equality.

• Journal of Appropriate Technology
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• v.6 no.2
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• pp.211-218
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• 2020

Since World Health Organization (WHO) declared Pandemic about COVID-19 at 11 March, 2020, 214 countries now have more than 5.8 million confirmed cases and 360 thousand deaths (29 March 2020). The pandemic of COVID-19 caused lockdown in numerous countries and cities. Strict social distancing also affects most of fields such as health, education, politics, religion, and economy. South Korea actively uses various digital technologies to fight against COVID-19, which is introduced internationally as a successful example. This article introduces the development background and functionalities of COVID-19 Epidemic Investigation Support System (EISS) as well as Smart City Datahub, the core technology that enables the rapid development and application of EISS. Moreover, based on this example, the role and importance of horizontal common platform, such as Datahub, are discussed in the view of future city.

• Journal of Korea Society of Industrial Information Systems
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• v.28 no.1
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• pp.83-94
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• 2023

The study examines the current status of introducing technological innovation in the Uzbekistan logistics industry and proposes opportunities and challenging factors for the logistics industry following the introduction of technological innovation in the future. The analysis results revealed that the information technology used in the Uzbekistan logistics industry following technologies: RFID, barcode, Cool Guardian, tracking system, transport satellite monitoring, digital TIR, and GPS monitoring. In addition, Uzbekistan has recently been increasing investment in advanced information and communication technology not only at the corporate level but also at the governmental level in anticipation of becoming a hub for logistics. Based on these analysis results, the Uzbekistan logistics industry's proposed opportunities and challenging factors can be used as basic information for government policymakers, transportation and logistics companies, and various partners. It can also be used by logistic companies that seek to take advantage of Uzbekistan's strategic location to create a logistics hub in Central Asia.

• Journal of Convergence for Information Technology
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• v.12 no.2
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• pp.184-191
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• 2022

This study aims to provide basic information necessary to find an efficient management plan for patients using auto insurance. The analysis was conducted on the five-year auto insurance medical expenses review data registered in the health care bigdata Hub from 2016 to 2020. As a result of the analysis, the number one composition ratio of auto insurance inpatient treatment expenses was treatment and surgery fees for Certified tertiary hospitals, hospitalization fees for general hospitals, hospitals and clinics, and treatment and surgery fees for oriental medical institutions and dental hospitals. outpatient treatment expenses was doctor's fee for medical institution, treatment and surgery fees for oriental medical institutions and dental hospitals. The ratio of medication, anesthesia, and special equipment significantly affected the cost of inpatient. And the ratio of physical therapy significantly affected the cost of outpatient.

• Journal of the Korean Operations Research and Management Science Society
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• v.22 no.3
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• pp.23-36
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• 1997

In the design of telecommunication network, the network configuration using hubbing topology is useful for designing and managing the network efficiently : i. e. all of central offices (COs) are grouped into clusters. Each cluster has one hub consisting of large-scale transmission facilities like digital cross-connect systems and ATMs. In clustering process, the community of interest and geographical factor should be considered. However, there exists a tradeoff between two factors. One is to minimize total link costs for geographical factor and the other is to maximize the total intra-cluster traffics for community of interest. Hence, this can be solved by multiobjective linear programming techniques. In this paper, the problem under considerations is formulated as two p-median subproblems taking into considerations total costs and total intra-traffics, respectively. Then we propose the algorithm to solve the problem based on the concept of cost-traffic tradeoff. The algorithm enables to identify efficient cost-traffic tradeoff pairs. An illustration is also presented.

• 한국디지털정책학회:학술대회논문집
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• 2005.11a
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• pp.209-220
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• 2005

지식경영은 기업의 지속적 경쟁력을 제공하는 중요한 경영기법으로 인식되고 있다. 그러나 많은 기업에서 know-how 지식이나 know-where 지식을 축적하여 놓고 관련 평가체계를 잘 정립하면 향후 사용될 것이라는 전제하에 지식관리를 하고 있는 실정이다. 이러한 관점에서 본 논문은 지식관리를 조직업무형태에 따른 체인, 허브, 웹 유형으로 구분, 관리함이 효과적일 것이라는 가설을 기존 논문을 근거로 도출하였다. 이 중에서 가장 관리하기가 어렵다고 판단된 웹 혹은 네트워크 유형의 지식관리를 체계적으로 하기 위해서는 네트워크의 구조 자체에 대한 분석이 클러스터링 계수와 네트워크를 확장하는 역할을 담당할 수 있는 구성원에 대하여 이루어져야함을 e-Business 모델을 이용하여 제시하였다. 이러한 네트워크의 선행분석은 기존의 지식관리방법론을 보다 적극적인 관점에서 계획 및 통제할 수 있는 수단을 제공할 수 있을 것으로 판단된다.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.133-138
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• 2016

As UAE has witnessed tremendous growth and diversification in its economy, logistics in particular has had great success as one of the first logistics clusters and hub to develop global business competitiveness but a few data and practical study related with logistics business competitiveness have existed due to lack of the openness in the region. In this sense, the purpose of this study was to carry out competitive analysis between UAE and not only major Middle East countries and but also Global countries using Porter's Diamond model. As a result of analysis with Middle East Countries such as Saudi Arabia, Qatar, UAE gained the highest score in factor conditions followed by logistics conditions, supported industries and demand conditions. UAE also is required to reduce cost and time of logistics process and get higher ease of international shipment, logistics competency and logistics timeliness. The logistics data set released from international and reputable bodies like WEF, OECD and IMD will assist to analyses logistics competitiveness among hub countries in future studies.

• Journal of Digital Convergence
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• v.14 no.10
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• pp.415-421
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• 2016

There has been an enormous increase not only in the international economic exchanges but also in the cultural exchanges. However, studies to settle the cultural differences have been studied a lot with in economic and business partial but research of eliminating cultural differences for travelers has not been studied. Therefore, in this study, we tried to develop the service design to eliminate the cultural differences. To set the spatial range, we choose airport which can be the hub and the door of the travelers at the same time. Moreover, we tried to understand the meaning of communication and sharing to resolve differences in culture through literature studies. Further, we analyzed the airport application and examples of Wi-Fi linked services, so can be applied to the proposal. Travelers share the cultural differences by themselves; through the Wi-Fi service in the airport, and the existing airport application. We expect to be able to resolve the cultural differences between nations and develop not only their prosperity but also the national image by this service.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.28 no.2
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• pp.219-243
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• 2017

This study aims to provide alternative strategies for promoting active engagement of users in participatory archives. It focuses on users and their active participation in digital archives beyond providing simple participation opportunities. In doing so, the study reviewed relevant literature that analyzes interpretation and development of participatory digital archives. Moreover, it examined several cases of participatory digital archives as to how they apply for user participation, policy, and service. As a general property, main participants, duration, and technology were examined. Technology was further subdivided into open source software, availability of Open API, availability of mobile web, and offline archives. Participation method was divided into active participation, hub participation, and passive participation according to degree of user participation, and the participation functions provided by each archive were compared and analyzed. In policy area, terms of use, personal information processing policy, copyright policy, collection policy, major collections, scope of collections, classification methods, and descriptive elements of each archive were discussed. Services were divided into content, search, and communication area. Based on such analysis, this study proposed ways for promoting active engagement of users in participatory digital archives in terms of participation, policy, content service, and communication service.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.35 no.4
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• pp.231-240
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• 2017

This paper aims to study a method to estimate precise carbon absorption by quantification of forest information that uses accurate LiDAR data, hyperspectral image. To estimate precise carbon absorption value by using spatial data, a problem was found out of carbon absorption value estimation method with statistical method, which is already existed method, and then offered optimized carbon absorption estimation method with spatial information by analyzing with methods of compare digital aerial photogrammetry and LiDAR data. It turned out possible Precise classification and quantification in case of using LiDAR and hyperspectral image. Various classification of tree species was possible with use of LiDAR and hyperspectral image. Classification of hyperspectral image was matched in general with field survey and Mahalanobis distance classification method. Precise forest resources could be extracted using high density LiDAR data. Compared with existing method, 19.7% in forest area, 19.2% in total carbon absorption, 0.9% in absorption per unit area of difference created, and improvement was found out to be estimated precisely in international code.