• Journal of Urban Science
• /
• v.9 no.2
• /
• pp.63-68
• /
• 2020

In recent years, the planning of livable communities has emerged as a new paradigm. The concept of livable communities is related to both the spatial balance of working, playing, and living and the promotion of green modes of transportation, such as walking and biking. This study uses a disaggregate travel survey conducted by the Seoul Metropolitan Area in 2006. I applied a multi-level random intercept logit model to estimate the effects of land-use characteristics on the choice of green modes, holding a traveler's socio-demographic characteristics constant. The empirical results show that higher density and more mixed land-use development encourages people to walk and bike even when individuals have the same socio-economic characteristics. This paper demonstrates that land-use planning by itself can play a role in the creation of livable cities and the decline of greenhouse gas production.

• Journal of Korean Neurosurgical Society
• /
• v.39 no.1
• /
• pp.72-74
• /
• 2006

We report a case of fatal aortic tumor embolism presenting as acute paraplegia. A four-year-old girl was referred from a local hospital with sudden paraplegia and a poor medical condition. A neighbor had noticed her fall from a bike, and she could not walk. She had no previous illness. Emergency spine MRI revealed no remarkable findings. During the process of evaluation, her general condition deteriorated progressively. Chest and abdominal CT showed a large mass in the left lung field, and a diagnosis of aortic occlusion was made. An emergency transfemoral embolectomy was attempted. However, the patency of the aorta was not recovered. On pathological examination of tissues taken from the embolectomy, a pleuro-pulmonary blastoma was found. The patient died 22 hours after the onset of her symptoms. We describe a possible mechanism for the tumor embolism. To the best of our knowledge, this is the first case report of aortic occlusion caused by an embolic malignancy, presenting as acute paraplegia.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.8
• /
• pp.595-604
• /
• 2016

This study discusses the sustainable development of the compact city. The problems of urban sprawl have long been recognized. Urban sprawl results from the confluence of several factors: the lure of cheap open land outside the city, advances in transportation, the ready availability of capital to buy property, the increase in the number of real estate developers and the mass production of housing. The term compact city has the opposite connotation to urban sprawl. Compact cities provide a more energy efficient and less polluting environment, because dwellers within them live closer to shops and work and can easily walk, bike or take public transport. In other words, the compact city has the objective of facilitating the integration of the different functions through the intensive development of various facilities, such as residences, commerce, businesses and of improving the efficiency of urban energy usage by decreasing the volume of traffic.