• Journal of the Economic Geographical Society of Korea
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• v.6 no.2
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• pp.471-486
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• 2003

Gentrification, the revitalization of inner city areas, encompasses both the changes in social and demographic composition and the alterations in the physical and economic nature of built environment. This urban phenomenon has received the bulk of attention since the 1970s, and simultaneously provided one prominent stage for the theoretical or ideological debates in the field of urban geography. Given this context, this paper deals with the consumption-based and production-based approaches to gentrification, both of which are involved in such debates. Specifically, this paper critically reviews and evaluates David Ley's and Neil Smith's explanations representing the two approaches, respectively. On the basis of the two urban geographers' seminal works published in the 1980s, this paper discusses the limitations of each explanation as a partial explanation.

• The Korean Journal of Rehabilitation Nursing
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• v.4 no.1
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• pp.20-30
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• 2001

Stroke is known as a detrimental disease that leaves serious sequelae. The stroke patients suffer from limitations of physical and social activities. The patients try to adapt themselves to the limitations in order to achieve rehabilitation. This study was performed to clarify the lived experience of rehabilitation from the stroke patients. In collecting data for this study, in-depth personal interviews were made by a researcher from February to April in 2001 at rehabilitation clinics and physical therapy centers locate in Iksan city. The methodological approach was van Manen's hermeneutic phenomenological methodology in order to understand the meaning and nature of stroke patients' experiences in rehabilitating their physical limitations. Collected data were analyzed with phenomenological way of study that was develope by van Manen. The 8 patients who agreed to participate in this research were inter viewed by researcher under the private and comfortable environment. Personal interviews were done three or five times per each patients and each interview took 70 to 90 minutes. The statements were analyzed and finally revealed three essential themes : Theme 1 - Desperateness to achieve freedom again Theme 2 - Seizing hope of recovering Theme 3 - Seeking support from family members, relatives and friends Based on these themes, stroke patients' rehabilitation experience are described as following. The stroke patients have strong desire to achieve freedom again in order to escape from social isolation. The stroke patients want to go back to the state of their previous health state. The stroke patients strongly try to do anything for their recovering and also to have positive thinking. In the other hand, they feel pity for themselves through desperation, fear, sorrow, and self-pity. The stroke patients have dissatisfaction about neighbors' rumor and attitude toward themselves. The stroke patients have experiences to rely on neighbors' support seeking a warm word of consolation. This research showed us that van Manen's hermeneutic phenomenological methodology leads us to understand stroke patients' rehabilitation process more comprehensibly. Based on this research, it is suggested that further studies provide a foundation for the development of a rehabilitation theory for Korean stroke patients.

• Journal of the Korean Geographical Society
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• v.42 no.2 s.119
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• pp.280-294
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• 2007

This paper aims to examine the ways in which the Singaporean government has promoted the "global city" imaging strategy as a means for marketing Singapore. Since the 1990s, Singapore has pursued a place-marketing strategy that aims at imaging itself as a "creative", "culturally vibrant" and "cosmopolitan" global city by utilizing various cultural, tourist and spatial policy measures. It argues that the Singaporean government has promoted this particular imaging strategy under a broader economic resoucturing program, aiming at transforming the Singapore's economy into a "knowledge-driven" one, under which the attraction of international knowledge workers is seen as crucial for the competitiveness and innovation. This paper also discusses the limitations of this strategy, focusing on growing tensions between the global and the local in the Singaporean society and the ways in which the authoritarian and top-down nature of governance have restricted the genuine development of the "culturally vibrant" environment in Singapore.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.218-219
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• 2011

This paper focuses on dispatching strategy for AGVs(Automated Guided Vehicle). The goal of AGV dispatching problem is allocating jobs to AGVs to minimizing QC delay and AGV total travel distance. Due to the highly dynamic nature of container terminal environment, the effect of dispatching is hard to predict thus it leads to frequent modification of dispatching results. Given this situation, single rule-based approach is widely used due to its simplicity and small computational cost. However, single rule-based approach has a limitation that cannot guarantee a satisfactory performance for the various performance measures. In this paper, dispatching strategy based on multicriteria heuristics is proposed. Proposed strategy consists of multiple decision criteria. A muti-objective evolutionary algorithm is applied to optimize weights of those criteria. The result of simulation experiment shows that the proposed approach outperforms single rule-based dispatching approaches.

• Journal of Internet of Things and Convergence
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• v.6 no.2
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• pp.31-36
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• 2020

The remarkable change in the automobile industry, which is a traditional industrial field, is now evolving into a form of moving toward autonomous functions rather than humans due to various convenience functions and automatic driving or autonomous driving technologies if the person was central when driving the car. This situation is expanding to various industries such as the aviation industry and the drone market, as well as the robot market. The drone market in the aviation industry is being used in various fields due to the unmanned nature of drone operation. Among them, military drones are secret and due to the specificity of technology, details are not disclosed, but as a collection of advanced technologies, they have played a key role in drone development. In this study, the current status of China and the European Union, including the United States, which are major competitors in the drone field, was investigated, and the technologies of major countries were compared and analyzed through the characteristics and operational specifications of the drones currently in operation.

• Korean Institute of Interior Design Journal
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• v.26 no.6
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• pp.163-171
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• 2017

Brick is not only aesthetically beautiful and emotional material, but also eco-friendly and good building commodity for human health. Nonetheless, the use of brick has declined, due to the difficulty of building high-rise buildings and the limitation of the free form implementation. However, modern society is increasingly interested in environmentally friendly finishing materials for solving environmental problems. From this point of view, the brick architecture is being reexamined as a material to improve the living environment and to provide comfort without destroying nature. In addition, the development of digital technology enables the implementation of various types of masonry method and curved forms. Parametric design is one of the ways to realize the curved forms and various architectural expressions for brick architecture. In this background, the purpose of this study is to develop algorithms that can easily generate curved brick walls through parametric design, enable various pattern designs, and respond to real-time feedback. The details of the study are as follows. First of all, we examine organic architecture, the trend of brick architecture, and the concept of parametric design. Secondly, In order to generate curved surface with complex curvature, major planning factors affecting form generation are examined. Finally, we develop a parametric design method that consists of generating a curved surface for brick arrangement, implementing a parametric algorithm, and generating a curved form using bricks. Consequentially, we propose an algorithm that can maximize the use of ready-made bricks without using cut bricks to design curved walls and present efficient and economical design alternatives.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.558-561
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• 2018

Human errors have known as a majority of maritime navigational accidents such as collision and grounding. A large number of relevant research applied indirect research methods such as survey and interview. The research methods are limited to collect objective data regarding human errors due to its nature. Therefore, the purpose of this study is to improve the limitation of human error measurement of navigators by applying wearable sensors. Infrared sensors by using a 3-D printer to accommodate the special environment of a ship were developed for the study. As results, a significant reliance on the Integrated Navigation System including Electronic Chart Display and Information System (ECDIS) and Radar. The results are expected to motivate further research to investigate human errors of ship navigators to reduce the maritime navigational accidents.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.4B
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• pp.227-235
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• 2012

Holes that generated by the unpredictable and harsh nature application environment or uneven energy consumption are an inevitable phenomenon in wireless sensor networks. Most of the existing schemes for this hole problem tend to use a static detour path to bypass a hole. The static detour path may lead to uneven energy consumption of the nodes on the boundary of the hole, thus it may enlarge the region of holes. At the same time, traffic would concentrate on the nodes on the boundary of the hole and tend to be depleted quickly. To solve this problem, we introduce energy-efficient grid-based geographic routing and hole-detouring scheme by taking advantage of grid anchor point in wireless sensor network with holes. The location of hole detour anchor node is dynamically shifted in grid cell. just generating dynamic hole detour paths to reduce total energy consumption. Simulation results are provided to validate the claims.

• Convergence Security Journal
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• v.8 no.4
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• pp.105-113
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• 2008

Mobile computing environment is known to be quite difficult to provide user with a stable Quality of Service (QoS) due to vehicle mobility nature. In order to protect the inherent characteristics of wireless network such as low bandwidth and high transmission delay along with the vehicle's mobility, many works are conducted to apply caching and prefetching methods. This paper presents a novel prefetching technique which is based on owner's profile. It is the scheme with the vehicle velocity, the visit frequency and resident time of specific region for vehicle owner's past given period, and the user profile which has owner's personal inclination about a certain place. The proposed scheme shown relatively superior performance in terms of the utilization ratio of prefetched information and the failure ratio of information retrieval than the previous methods.

• The Korean Journal of Community Living Science
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• v.16 no.1
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• pp.73-88
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• 2005

As the proportion of the elderly population in rural Korea has increased rapidly, the quality of life of the rural elderly has become a major public and policy concern. In this regards, most of the researches on rural elderly have focused mainly on the 'risk factors or problems' of rural areas, ignoring the 'positive or protective aspects' of rural community on the quality of life of elderly. This study attempts to explore the possible positive influence of rural community on the quality of life of elderly and to examine the linkage among ecological characteristics of the communities, social interaction and quality of life of rural elderly. To achieve this goal, a community case study was conducted in four Korean rural villages. The data were collected using participant observation method and in-depth interviews (person-to-person, group interviews). All the interviews were tape-recorded and transcribed verbatim for the analysis. The data was analyzed using the reflective qualitative analytic technique. The major findings of this study are as follows : All of the four villages have strong community ties and provide contexts which make it possible for older people to share their everyday life with neighbors and to actively participate as a community member. Although the four villages were geographically not far from each other, the pattern of social interaction and the nature of everyday-life of the elderly were nevertheless different depending on the ecological environment of each community, the relationship history among the community members, and the shared experience of historical events in recent Korean history. Elderly men have smaller networks and have less frequent contact with community members than elderly women. The political and practical implications of this study are discussed.