• Title/Summary/Keyword: Population movement

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Characteristics of Wintering Habitat use by Black-tailed Gulls (Larus crassirostris) on the West Coast of Korea

  • Tehan Kang;Soon Sik Kim;Daehan Cho;Tae Wan Kim;Woon Kee Paek;Si-Wan Lee
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • v.5 no.2
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    • pp.37-42
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    • 2024
  • This study used a GPS tracker to determine characteristics of wintering habitat use by black-tailed gulls on the west coast of Korea. Results of this study showed a southward movement in December and a northward movement in March. The wintering habitat was confirmed to include the southwest coastal island area (Group 1), the inland coastal area (Group 2), and China (Group 3). The wintering home range was the narrowest in October and the widest in December. Home range of Group 1 was increased from November, showing the maximum in December, decreased in February, and then tended to increase again in March. Group 2 showed the widest home range in November and a narrow range of home range from December. Home range of Group 3 showed a mixed pattern of group 1 and group 2. The flight rate was the lowest in January and the highest in March. Day and night flight rates showed significant differences by month. This study identified wintering characteristics of the West Coast population of black-tailed gulls on the West Coast, including their wintering areas, migration periods, and use patterns. These wintering characteristics of black-tailed gull in the west coast area are thought to be affected by environmental factors (such as food resources and fishing activities) and geographical characteristics of the West Coast where many islands are distributed.

Work-related Musculoskeletal Disorders among Agricultural Workers

  • Lee, Soo-Jin;Park, Hwan-Jin
    • Journal of the Ergonomics Society of Korea
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    • v.30 no.4
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    • pp.525-534
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    • 2011
  • This paper describes the current status of musculoskeletal disorders(MSDs) and its ergonomic risk factors, including the preventive intervention in terms of the working conditions and health promotion among agricultural workers. Korean agricultural workers have been exposed to the poor working condition. They have suffered from a variety of work-related injury and diseases more than the general population or the other occupational group. MSDs are one of the most prevalent problems threatening the agricultural worker's health and quality of life. Low back pain, osteoarthritis of hip and knee joint and carpal tunnel syndrome are well known MSDs that was found easily and frequently among agricultural workers. MSDs are worsened by poor ergonomic working conditions such as heavy weight lifting, repetitive movement and awkward posture which involves squatting with long sitting work on the ground, long working hours and heavy workload which are inherent in the greater part of agricultural works. Even though Korean agricultural workers are very weak population in terms of occupational safety and health, no many studies were conducted in the past and no many social and institutional supports were provided sufficiently. We need more interests and efforts in agricultural fields to improve its working condition and to promote health status of agricultural workers.

The Impact of Moving Pharmaceutical Products from Prescription Only to Over-the-Counter Status on Consumer Exposure to Advertising

  • Yang, Hae-Kyung
    • International Journal of Human Ecology
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    • v.12 no.2
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    • pp.1-12
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    • 2011
  • Many pharmaceutical products are available through prescription (Rx) only status. As a result, access to physicians and insurance coverage play a key role in the use of these products, and therefore may affect the population to whom advertising is targeted at. The movement of pharmaceutical products from prescription (Rx) to Over-the-Counter (OTC), or Rx-to-OTC switch changes the cost of acquiring the drug and therefore may change the incentives manufacturers have at targeting particular population segments. This study examines whether Rx-to-OTC switch changes the frequency and the distribution of who is exposed to pharmaceutical advertising. Using an archive of pharmaceutical advertisements and National Consumer Survey, this study examines how individuals with particular demographic characteristics are exposed to pharmaceutical advertisements before and after drugs are moved from Rx to OTC. The results provide evidence that individual's advertising exposure increases after Rx-to-OTC switch. Moreover, the increase in advertising exposure is greater for the low socioeconomic status (SES) consumers which implies they may get more information about the disease, treatment and product after the Rx-to-OTC switch through advertising. If low SES consumers have more exposure to the advertising after products switched to OTC, then FDA policies regulating this switch should recognize the potential role of advertising providing access to health-related information.

New Public Health and National Public Health System (신 공중보건과 국가공중보건체계)

  • Bae, Sang Soo
    • Journal of agricultural medicine and community health
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    • v.37 no.4
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    • pp.195-214
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    • 2012
  • The New Public Health(NPH) is a comprehensive approach to protecting and promoting the health status of each individual member and society as a whole. NHP is not so much a philosophy to broaden the understanding of public health as it is an action plan to address current public health system. This paper's objectives include increasing public and professional awareness of the significant changes in the national public health systems of developed countries and contributing to more effective delivery of public health services in Korea. This paper reviews articles and documents concerning NPH and the public health system, and outlines of the achievements in developed countries since NPH movement began. These include the change in the definition and function of public health, expansion of public health networks, strengthening of public health policy, reorientation of public health delivery systems, promotion of workforce capacity, and the implementation of evidence-based management. To overcome the challenges facing the public health system of Korea, we must prioritize the value of population-based approach, expand the notion of a public health system to encompass all sectors that can influence health, promote a "Health in All Policies" approach, focus on an evidence-based health policy and program, develop core competencies for public health workers, and establish performance standards for public health organizations based on the core functions of public health.

Trends and Issues in Social Geography in the 2000s in S. Korea: (2) Empirical Researches (2000년대 한국 사회지리학의 경향과 논제들 -(2) 경험적 연구들-)

  • Choi, Byung-Doo
    • Journal of the Korean Geographical Society
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    • v.47 no.5
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    • pp.735-754
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    • 2012
  • Korean society in the 2000 has experienced new many social and spatial issues such as the process of neoliberalism and changes in urban and spatial policies, the development of information and communication technology and reconfiguration of informational social space, radically increasing foreign immigrants and transformation to multicultural society, global warming and environmental injustice, and these new issues have promoted development of social geography in Korea. In addition to a review on them, this paper provides a review on empirical researches on traditional issues which have been dealt with in social geography in the 2000 in Korea. Even though there have been numerous sub-issues, they can be divided into two categories: one is urban and communal social geography including urban housing and residential segregation, urban social problems such as poverty, crime, education, health care, social welfare, urban and rural community building, identity, sense of place, and social movement; the other is social geography of population and migration, including population movement, aged society and social welfare for elderly people, and foreign immigrants and formation of multicultural social space. As some difficult conditions such as path-dependent process of neoliberalism, transformation toward informational, aged, and multicultural society would continue, so social geography in Korea to tackle with these external conditions should deepen its theoretical insights and widen its research issues.

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Genetic Differentiation of Overwintering Populations of Oriental Fruit Moth, Grapholita molesta, and Their Movement (월동세대 복숭아순나방(Grapholita molesta)의 지역적 분화 및 이동)

  • Park, Jung-A;Son, Ye-Rim;Bae, Sung-Woo;Kim, Yong-Gyun
    • Korean journal of applied entomology
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    • v.47 no.3
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    • pp.201-208
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    • 2008
  • Spring phonology of the oriental fruit moth, Grapholita molesta, was monitored using sex pheromone traps in apple cultivating areas. Their occurrence was earlier in southern areas and their population sizes were significantly different among orchards even in a local cultivating zone. The overwintering populations appeared to move between local orchards, based on the fact that monitoring data obtained at the sites between orchards were similar to those of nearby orchards. However, within orchards, these adult movements appeared to decrease and showed skewed occurrences at the side of upwind direction or close to neighboring orchards. At initial occurrence peak(April 20-25), the ovenvintering populations of the different localities were collected and analyzed in their genetic distances. PCR-RAPD analysis indicated that there were significant genetic differences among the overwintering populations of G. molesta. This genetic differentiation of overwinterin populations may be due to genetic bottleneck following differential selection pressures against the subpopulations of G. molesta during winter on the basis of the RAPD analysis that each early spring population was significantly different to its previous fall population in the same locality.

Significance and Limitations of Chinese Rural Villages Reconstruction - Focusing on the Critical Study on'Farmers' Upstairs(農民上樓)' Phenomenon - (중국 농촌마을 재편의 의의와 한계 - '농민상루(農民上樓)' 현상에 대한 비판적 고찰을 중심으로 -)

  • Park, Kyong-Cheol
    • Journal of Agricultural Extension & Community Development
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    • v.22 no.2
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    • pp.191-203
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    • 2015
  • The purposes of this study are to explain the background and significance of the 'Farmers' upstairs'(農民上樓) phenomenon which has been currently promoted as part of the "New Socialist Countryside Construction" in contemporary China, and its positive and negative aspects, and analyze the limitations of 'Farmers' upstairs'phenomenon. 'Farmers' upstairs'means the building of concentrated farmhouses by means of reconstruction of scattered farmhouses here and there, simultaneously by installing cultural, social welfare, and environmental facilities where rural farmer also could enjoy the convenience of urban living. It brings, however, the positive effects such as the improvement of living conditions of rural farmers, the simultaneously expanding of urban construction land and agricultural land, and the new influx of population from urban areas, whiles the negative effectives such as the forced demolition of farmhouses by governments or real estate developers with very lower compensation costs for the demolition of farmhouses, the gap from the standard of living, and above all, the inconvenience caused by the living in a multi-stories building in the rural villages. As a result, it is pointed out that the ongoing 'Farmers' upstairs', promoted as a kind of rural movement beyond a phenomenon, has similarities with the Rural Cooperative Movement(農村合作化運動) of Mao Zedong era(1953-61), namely the People's Commune Movement(人民公社運動) finally failed.

Analysis of Wildlife Moving Route with Landscape Characteristics (경관의 특성에 따른 동물의 이동경로에 관한 연구)

  • Lee, Dong-Kun;Park, Chan;Song, Won-Kyong
    • Journal of Environmental Impact Assessment
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    • v.17 no.2
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    • pp.133-141
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    • 2008
  • The loss, alteration, and fragmentation of habitat have led to a reduction of biodiversity. The growing awareness of the negative effects of habitat fragmentation on natural systems has resulted in conservation strategy that is concerned with not only population and habitat level but also ecosystem and landscape level. Especially, ecological network to link core areas or major habitat patches is one of the most important issues. Recently, landscape connectivity is increasingly used in decision making for fragmented landscape management in order to conserve the biodiversity in the regional scale. The objective of this study was to find potential forest as a ecological corridor in Go-yang city, Gyung-gi province using cost-distance modelling method that can measure connectivity based on animal movement. 'Least cost-distance' modelling based on functional connectivity can be useful to establish ecological network and biodiversity conservation plan. This method calculates the distance modified with the cost to move between habitat patches based on detailed geographical information on the landscape as well as behavioural aspects of the animal movement. The least cost-distance models are based on two biologically assumptions: (1) dispersers have complete knowledge of their surroundings, and (2) they do select the least cost route from this information. As a result of this study, we can find wildlife moving route for biodiversity conservation. The result is very useful for long-term aspect of biodiversity conservation plan in regional scale, because this is reflection of geographical information and behavioural aspects of the animal movement.

Analysis of Passenger Movement Patterns Using Subway OD Data (도시철도 출·도착데이터를 이용한 승객이동 패턴 분석)

  • Baik, Euiyoung;Cho, Jae Hee;Kim, Dong-Geon
    • Journal of the Korea Convergence Society
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    • v.10 no.12
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    • pp.315-325
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    • 2019
  • The purpose of this study is to design and construct a data mart that anyone can easily analyze subway OD movement patterns. Subway OD data of the year 2017 was downloaded from the Seoul Open Data Plaza and used as the source data. A multidimensional model was designed, and Gaussian mixed cluster analysis and visualization analysis using Tableau were performed. Interestingly, movement between suburban and Seoul accounts for 23% of the total traffic. The passengers of Suwon Station move to the suburbs much more than Seoul, while Pangyo Station mostly moves to Seoul. As a result of Gaussian mixed cluster, eight clusters of OD segments were found, and the characteristics of each cluster were characterized by segment distance and passenger size.

The Changes of Urban System Reflected in Daily Movement: 2005-2012 (일일 인구이동으로 본 국토공간의 도시체계 변화: 2005년과 2012년)

  • Son, Seungho
    • Journal of the Korean Geographical Society
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    • v.50 no.2
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    • pp.203-216
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    • 2015
  • This paper examined the changes of urban system through the network and the flow pattern reflected in daily movement in Korea. Because daily movement reflects trip pattern, urban system formed by inter-city linkages can be recognized in terms of living sphere. While population movements between cities have the number of linkage systems of city network and the number of traffic regions composed of the origin and destination has increased respectively. Nevertheless, spatial extent of Capital region and Busan region has been expanded. In Gangwon-do in which Seoul-oriented high-speed transportation network has developed, separation of living sphere between Yeongdong area and the Soyanggang cultural region formed around Chuncheon was intensified. Living sphere that includes Daejeon and the surrounding cities has been expanded to the southern Gyeonggi-do. The existing living sphere formed in Jeollanam-do was fragmented into the east and west around Mokpo and Suncheon due to the weakened centrality of Gwangju. Living spheres formed by spatial interaction were consistent with regional administrative boundary. Considering the increased interaction between Seoul and its surrounding cities, the development of global city-region centered on Seoul is expected.

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