• Journal of Korean Neurosurgical Society
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• 제59권5호
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• pp.533-536
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• 2016

Pilocytic astrocytomas (PAs) are World Heath Organization Grade I tumors and are most common in children. PA calcification is not a common finding and has been reported more frequently in the optic nerve, hypothalamic/thalamus and superficially located cerebral tumors. We present a cerebellar PA in a 3-year-old male patient with cystic components and massive calcification areas. The residual tumor grew rapidly after the first operation, and the patient was operated on again. A histopathological examination revealed polar spongioblastoma-like cells. Massive calcification is not a common feature in PAs and can lead to difficulties in radiological and pathological differential diagnoses.

• 한국산업정보학회논문지
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• 제11권5호
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• pp.86-97
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• 2006

오늘날 많은 기업들은 경쟁우위를 확보하기 위한 수단으로 지식경영을 도입하고 있으며, 이에 필요한 지식관리시스템 구축에 많은 투자를 하고 있다. 조직 내에서 지식관리시스템의 효과적인 사용은 조직 구성원들의 지식수준 향상과 업무의 비효율성을 제거시킴으로써 조직의 경쟁력을 증가시킬 수 있다. 본 연구는 조직의 지식관리시스템을 성공적으로 구축하기 위해 파워 프로세스의 관점에서 지식을 제공하는 지식근로자, 특히 기업 경영자의 리더십에 따른 성과분석을 통해 지식관리시스템 구축에 필요한 정보를 제공하고자한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권9호
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• pp.4379-4397
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• 2017

Three different improvements of the Velocity-based model were proposed in a minimal velocity-based pedestrian model. The improvements of the models are based on the different agent forms. The different representations of the agent lead to different results, in this paper, we simulated the pedestrian movements in some typical scenes by using different agent forms, and the agent forms included the circles with different radiuses, the ellipse and the multi-circle stand for one pedestrian. We have proposed a novel model of pedestrian dynamics to optimize the simulation. Our model specifies the pedestrian behavior using a dynamic ellipse, which is parameterized by their velocity and can improve the simulaton accuracy. We found a representation of the pedestrian much closer to the reality. The phenomena of the self-organization can be observable in the improved models.

• 디지털융복합연구
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• 제6권1호
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• pp.35-41
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• 2008

The digital economic environment of next generation, which digital high-technology industry appears to be the economic center of the high degree of industry structure, is expected to be developed as the existing traditional industry is merged with high tech digital one. The developing system of contents policy for digital industry means the policy and vision, and strategic structure which get the mechanism of contents industry structure to work. The promotion organization of digital contents policy is requested to secure the framework of digital contents industry based on cluster, the infra framework of digital infra culture, the infra framework of industry-academic cooperation, and the overall digital contents based on motive policy for the vitality of the youth. The application of digital contents policy may lead to establish the framework of the growth for the every unit of industry with the cluster oriented system.

• 한국경영과학회지
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• 제31권2호
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• pp.1-13
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• 2006

To rapidly respond to uncertainties in the business environment whilst remaining competitive, every organization needs to be able to successfully introduce and manage organizational change. Cognizant of the role of information systems (IS) as an enabler of organizational change, many organizations have paid attention to Enterprise Resource Planning (ERP) systems for successful organizational change primarily because of their change-driving forces across organizations. This study focuses attention on the role of readiness for change in the ERP systems adoption. Readiness for change described as views about the need for organizational change is posited to be an antecedent of two expectancies about the system, performance expectancy and effort expectancy, which lead to actual system use. Based on data gathered from the users of the ERP systems, structural equation analysis using LISREL provides significant support for the proposed relationships.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.1502-1507
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• 2004

In the 21st century, the traffic culture is changing suddenly with the advent of high-speed train era so called the traffic revolution age. The policy management for inducing the creativity becomes important for research institutes since the research institutes play an important role for the lead and distribution of new technologies. Therefore, the approach strategy of this investigation is based on the viewpoint of the organizational culture for better performance of research and development through stimulating inducements of creativity and active action of members. A questionnaire survey was performed on five research institutes including a professional railway research institute (PRRI) and four industrial research institutes for the current research, and a development plan for organizational culture of a PRRI has been presented based on the comparison study between two different types of research institutes.

• 국제초고층학회논문집
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• 제7권2호
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• pp.95-109
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• 2018

Since the concept was first introduced in the 1970s, transit-oriented-development (TOD) has greatly expanded in East Asian cities such as Hong Kong. Rail stations are built together with clusters of residential-commercial towers and government services to form a new style of living - a "rail village." This paper examines the composition, scale, spatial form, organization and operation of several typical rail villages in Hong Kong. The cases range across those planned from the mid-1990s to 2015. Based on the analysis of the rail village composition, the paper derives a development ratio to indicate the density, effectiveness and efficiency of a rail village catchment area. The ratio provides a useful and direct figure for the comparison of different stations, cities and development modes.

• 가정과삶의질연구
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• 제29권6호
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• pp.123-136
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• 2011

Korean workplaces can and should reflect the realities of the 21st century workforce. Leading companies try to plan and implement family-friendly policies for their employees, but most of them in fact do not offer family-friendly policies or offer only a few such policies. Therefore, this study seeks to suggest policies that can lead to better family-friendly cultures at workplaces. A family-friendly company culture allows for a better work-life balance, including flexible schedules and generous family-leave policies. This study suggests a family-friendly committee for work-life balance and a role for the government as a leading organization.

• Journal of Welding and Joining
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• 제34권4호
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• pp.9-16
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• 2016

Metal parts are produced by conventional methods such as casting, forging and cutting, extrusion, etc. However, nowadays, with additive manufacturing (AM), it is possible to directly commercialize by means of stacking of equipment to the 3D drawing and use of high precision tools such as laser source. Thus, drawing of materials is an important aspect in delivering good products. AM deals with production of lighter aircraft parts and few more three-dimensional molds, it wish to manufacture special medical parts and want to steadily expand the new market area. The cost of related equipment and materials are still expensive and difficult to obtain on a mass production. However, the ability to make changes and lead the innovation in the paradigm of traditional manufacturing process is still effective. In this paper, we introduce metal AM and the principles of the related devices, metal powder production process, and their application.

• 산업융합연구
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• 제3권1호
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• pp.79-100
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• 2005

Considering the above points, this study has been conducted to find out the effects brought by perceived organizational justice towards organizational citizenship behavior, with focus on multi-dimension and multi-class nature of trust. With this objective, I researched the following. First, which type gives larger effect to organizational citizenship behavior, the type of distributive justice (that is lower dimension of organizational justice) or that of procedural justice. Second, what effects are given to the 5 types of trust, by distributive justice and procedural justice. Also, what effects are given to organizational citizenship behavior by the 5 types of trust. Third, which type of justice gives larger effect to organizational citizenship behavior when trust is served as a medium. Fourth, which items should be dealt in priority to lead members of organization towards a desirable direction. The research for this purpose was conducted on the basis of comprehensive analysis of variable including. socio-population variable.