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38731. Built-Up Area Change Analysis in Hanoi Using Support Vector Machine Classification of Landsat Multi-Temporal Image Stacks

Author:
Jefferson Fox, Duong Nong, Miguel Castrence, Tomoaki Miura, James Spencer, and Qi Chen
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
Vietnam is experiencing one of the greatest urban transitions over the last two decades after the embankment of "Doi Moi" policy in 1986. The urban transition is vividly manifested in social, economic and physical aspects. While the urbanization can boost the industrialization and modernization goals of the country, it can cause adverse impact on natural environment as well as society and economy. To support a sound urban development plan, it is important that data and analysis on urban built-up areas are accurate and timely available. In this study, the Support Vector Machine Classification Algorithm (SVM) was applied to the multi-temporal image stacks of Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM) from 1993 to 2010 to quantify the changes of built-up areas over three time periods, 1993-2001, 2001-2006, and 2006-2010 and across twelve buffer zones. Our SVM classification algorithm has produced a highly accurate map of land use/land cover change with the overall accuracy of 95%. The study showed that most of the urban expansion occurred in the periods 2001-2006 and 2006–2010. The analysis was strengthened by the analysis of population census and other socio-economic figures. Through out this study, an implicit correlation between the urban growth, the trend of spatial expansion and other relevant geographic and socio-economic factors can be proposed. Result of this study would allow urban planners and decision makers to timely evaluate and adjust accordingly the urban growth and be aware of the sustainable usage of the invaluable natural lands and other environmental, social and economical problems.
Topic:
Economics
Political Geography:
Vietnam

38732. Quantify Spatiotemporal Patterns of Urban Growth in Hanoi Using Time Series Spatial Metrics and Urbanization Gradient Approach

Author:
Jefferson Fox, Duong Nong, Tomoaki Miura, James Spencer, Qi Chen, and Christopher Lepczyk
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
The year of 2010 was the first time in human civilization that the urban population had reached 3.5 billion people or crossed the 50% mark and continued to grow with no sign of slowing down especially for developing countries in Africa and asia (UN,2011). In 1800, only few percent of the world population lived in urban areas, but quickly increased to 14% in 1900 and then 30% in 1950 (platt,1994). Clearly, urban areas have become one of our primary habitats; therefore, urban sustainability is becoming more important than ever.
Political Geography:
Africa and Asia

38733. Economic Analysis of Duck Production Household Farm Level in the Context of Highly Pathogenic Avian Influenza Subtype H5N1 in the Red River Delta, Vietnam

Author:
Chinh C. Tran and John F. Yanagida
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
Occurrence of the Highly Pathogenic Avian Influenza subtype H5N1 usually results in the complete loss of the producer's entire flock due to high mortality rate and stamping out conducted to contain the virus. This study explores the expected economic impacts of HPAI H5N1 on smallholder duck producers in the Red River Delta of Vietnam. A conceptual model is developed to describe how a producer responds at each week of duck production to maximize profit and evaluate expected profits/losses of the producer in light of HPAI H5N1. The results suggests that in the case of no disease occurrence, the optimal time to sell ducks is at week 10 of the production cycle when ducks reach the age of 8 weeks. Maximum profit gained is US$805 for a producer with an average flock size of 794 ducks. However, the producer would suffer serious losses once the disease occurs. The expected investment loss is far higher than the maximum profit received at each production cycle and is estimated to be 3 times higher.
Topic:
Economics, Health, Infectious Diseases, and Food
Political Geography:
Vietnam

38734. Policy Implications for Prevention of Highly Pathogenic Avian Influenza Subtype H5N1 in Conjunction with Risk Factors in the Red River Delta, Vietnam

Author:
Jefferson Fox, Chinh C. Tran, John F. Yanagida, and Sumeet Saksena
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
The challenge is to develop the vaccination program that is more successful in containing and preventing the Highly Pathogenic Avian Influenza subtype H5N1 from recurrence in the Red River Delta, Vietnam and reducing vaccination costs. This study addresses the tradeoff between the current policy which implements an annual two-round vaccination for the entire geographical area of the Delta and an alternative policy which involves more frequent vaccination in higher probability areas for the disease occurrence within the Delta. The ex-ante analysis framework is used to identify the location of higher probability areas for the alternative policy and evaluate the accuracy of the analysis. The efficacy and cost analysis of vaccination programs are then implemented for the tradeoff between the current and the alternative policies. The ex-ante analysis suggests that the focus areas for the alternative vaccination program include 1137 communes, corresponding to 50.6% of total communes in the Delta and mostly located in the coastal areas to the east and south of Hanoi. The efficacy and cost analyses suggests that the alternative policy would be more successful in reducing the rate of disease occurrence and the costs of vaccination as compared to the current policy.
Political Geography:
Vietnam and United Nations

38735. Perceived Risk of Avian Influenza in Poultry Varies with Urbanization in Vietnam

Author:
Jefferson Fox, Melissa L. Finucane, Sumeet Saksena, Nghiem Tuyen, James H. Spencer, Nguyen Lam, Trinh Dinh Thau, Tran Duc Vien, and Nancy D. Lewis
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
Highly pathogenic avian influenza (HPAI) is an important public health concern because of its potential to cause widespread morbidity and mortality in humans and poultry and associated devastating economic losses. In this study we examined how perceptions of and response to the risk of HPAI in poultry vary across communes/wards in the north of Vietnam at different levels of urbanization (rural, transitional, urban). We conducted a quantitative household survey with 1073 respondents. Results suggested that the perceived risk of HPAI in poultry was highest in transitional and rural settings. Respondents in these settings were more likely than respondents in urban settings to agree that the process of change (in urbanization, agricultural practices, or natural habitat) increased the likelihood of an outbreak of HPAI in poultry. Compared with others, respondents in transitional areas reported that they do less planning and perceive vaccines to be more effective, while respondents in rural areas reported less perceived ability to separate infected poultry from others. We also found that the inability to respond is not necessarily because of an inability to perceive change but because, rapid and extensive change poses different challenges for poultry management as communes move from rural to transitional to urban settings. Our results suggest that public and animal health campaigns could be tailored in a way that recognizes the needs of poultry raisers in different settings.
Topic:
Health, Infectious Diseases, and Urbanization
Political Geography:
Asia and Vietnam

38736. Role of Urbanization, Land-Use Diversity, and Livestock Intensification in Zoonotic Emerging Infectious Diseases

Author:
Jefferson Fox, Duong Nong, Miguel Castrence, James Spencer, Sumeet Saksena, Nguyen Lam, Tran Duc Vien, Michael Epprecht, Chinh Tran, Melissa Finucane, and Bruce Wilco
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
Emerging infectious diseases (EIDs) continue to significantly threaten human and animal health. While there has been some progress in identifying underlying proximal driving forces and causal mechanisms of disease emergence, the role of distal factors is most poorly understood. This article focuses on analyzing the statistical association between highly pathogenic avian influenza (HPAI) H5N1 and urbanization, land-use diversity and poultry intensification. A special form of the urban transition—peri-urbanization—was hypothesized as being associated with 'hot-spots' of disease emergence. Novel metrics were used to characterize these distal risk factors. Our models, which combined these newly proposed risk factors with previously known natural and human risk factors, had a far higher predictive performance compared to published models for the first two epidemiological waves in Viet Nam. We found that when relevant risk factors are taken into account, urbanization is generally not a significant independent risk factor. However, urbanization spatially combines other risk factors leading to peri-urban places being the most likely 'hot-spots'. The work highlights that peri-urban areas have highest levels of chicken density, duck and geese flock size diversity, fraction of land under rice, fraction of land under aquaculture compared to rural and urban areas. Land-use diversity, which has previously never been studied in the context of HPAI H5N1, was found to be a significant risk factor. Places where intensive and extensive forms of poultry production are collocated were found to be at greater risk
Topic:
Health, Infectious Diseases, and Urbanization
Political Geography:
United States and Asia

38737. From Catching Up to Forging Ahead? China's Prospects in Semiconductors

Author:
Dieter Ernst
Publication Date:
10-2014
Content Type:
Working Paper
Institution:
East-West Center
Abstract:
China's new strategy to upgrade its semiconductor industry (outlined in the "Guidelines to Promote National Integrated Circuit Industry Development," June 24, 2014), seeks to move from catching-up to forging ahead in semiconductors, by strengthening simultaneously China's integrated circuit (IC) design industry and domestic IC foundry services.
Topic:
Economics, Globalization, Industrial Policy, Markets, and Science and Technology
Political Geography:
China and Asia

38738. Bringing Back the Palestinian Refugee Question

Publication Date:
10-2014
Content Type:
Working Paper
Institution:
International Crisis Group
Abstract:
The Palestinian refugee question, like the refugees themselves, has been politically marginalised and demoted on the diplomatic agenda. Yet, whenever the diplomatic process comes out of its current hiatus, the Palestinian leadership will be able to negotiate and sell a deal only if it wins the support or at least acquiescence of refugees – because if it does not, it will not bring along the rest of the Palestinian population. Refugees currently feel alienated from the Palestinian Authority (PA), which they regard with suspicion; doubt the intentions of Palestinian negotiators, whom they do not believe represent their interests; and, as one of the more impoverished Palestinian groups, resent the class structure that the PA and its economic policies have produced. As a result of their isolation, refugees in the West Bank and Gaza are making demands for services and representation that are reinforcing emerging divisions within Palestinian society and politics. There arguably are ways to address refugee needs, both diplomatic and practical, that are not mutually exclusive with core Israeli interests. This report examines what could be done on the Palestinian side to mitigate the risk that the Palestinian refugee question derails a future negotiation.
Topic:
Conflict Resolution, Refugee Issues, and Peacekeeping
Political Geography:
Middle East, Israel, and Arabia

38739. Myanmar: The Politics of Rakhine State

Publication Date:
10-2014
Content Type:
Working Paper
Institution:
International Crisis Group
Abstract:
The situation in Rakhine State contains a toxic mixture of historical centre-periphery tensions, serious intercommunal and inter-religious conflict with minority Muslim communities, and extreme poverty and under-development. This led to major violence in 2012 and further sporadic outbreaks since then. The political temperature is high, and likely to increase as Myanmar moves closer to national elections at the end of 2015. It represents a significant threat to the overall success of the transition, and has severely damaged the reputation of the government when it most needs international support and investment. Any policy approach must start from the recognition that there will be no easy fixes or quick solutions. The problems faced by Rakhine State are rooted in decades of armed violence, authoritarian rule and state-society conflict. This crisis has affected the whole of the state and all communities within it. It requires a sustained and multi-pronged response, as well as critical humanitarian and protection interventions in the interim.
Topic:
Conflict Resolution, Conflict Prevention, Political Violence, Post Colonialism, Religion, and Sectarianism
Political Geography:
Asia and Myanmar

38740. Mali : dernière chance à Alger

Publication Date:
10-2014
Content Type:
Policy Brief
Institution:
International Crisis Group
Abstract:
Alors que le Nord du Mali connait un inquiétant regain de violence, les négociations de paix à Alger constituent une chance unique de sortie de crise. Mais après deux mois de discussions, la paix semble encore loin. Le gouvernement malien et les groupes armés engagés dans les négociations peinent à trouver un terrain d'entente. Des groupes influents et radicaux qui manquent à la table des négociations sont tentés de faire dérailler le processus par la violence. La résolution du conflit passe par l'articulation complexe d'intérêts divergents qui touchent à la sécurité du Sahara, à la nature de l'Etat malien et aux équilibres locaux entre des communautés divisées. Face aux affrontements armés, la tentation est grande d'aller vite et de signer un accord à minima garantissant la sécurité à court terme. La précipitation est mauvaise conseillère. Il faut se donner les moyens et le temps de construire les fondements d'une paix durable.
Topic:
Political Violence, Diplomacy, Treaties and Agreements, and Peacekeeping
Political Geography:
Africa