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Full-Text Articles in Geography

Dynamic Nearest Neighbor Queries In Euclidean Space, Sarana Nutanong, Mohammed Eunus Ali, Egemen Tanin, Kyriakos Mouratidis May 2017

Dynamic Nearest Neighbor Queries In Euclidean Space, Sarana Nutanong, Mohammed Eunus Ali, Egemen Tanin, Kyriakos Mouratidis

Research Collection School Of Computing and Information Systems

Given a query point q and a set D of data points, a nearest neighbor (NN) query returns the data point p in D that minimizes the distance DIST(q,p), where the distance function DIST(,) is the L2norm. One important variant of this query type is kNN query, which returns k data points with the minimum distances. When taking the temporal dimension into account, the k NN query result may change over a period of time due to changes in locations of the query point and/or data points.


No-Place, New Places: Death And Its Rituals In Urban Asia, Lily Kong Jan 2017

No-Place, New Places: Death And Its Rituals In Urban Asia, Lily Kong

Research Collection School of Social Sciences

In many Asian cities, particularly those that confront increasing land scarcity, the conversion from burial to cremation has been encouraged by state agencies in the last several decades. From Hong Kong to Seoul to Singapore, planning agencies have sought to reduce the use of space for the dead, in order to release land for the use of the living. More secular guiding principles regarding efficient land use in these cities had originally come up against the symbolic values invested in burial spaces, resulting in conflicts between different value systems. In more recent years, however, the shift to cremation and columbaria …


Is Only One Gps Point Position Sufficient To Locate You To The Road Network Accurately?, Hao Wu, Weiwei Sun, Baihua Zheng Sep 2016

Is Only One Gps Point Position Sufficient To Locate You To The Road Network Accurately?, Hao Wu, Weiwei Sun, Baihua Zheng

Research Collection School Of Computing and Information Systems

Locating only one GPS position to a road segment accurately is crucial to many location-based services such as mobile taxi-hailing service, geo-tagging, POI check-in, etc. This problem is challenging because of errors including the GPS errors and the digital map errors (misalignment and the same representation of bidirectional roads) and a lack of context information. To the best of our knowledge, no existing work studies this problem directly and the work to reduce GPS signal errors by considering hardware aspect is the most relevant. Consequently, this work is the first attempt to solve the problem of locating one GPS position …


Measuring Vulnerable Population’S Healthy And Unhealthy Food Access In Austin, Texas, Junfeng Jiao Sep 2016

Measuring Vulnerable Population’S Healthy And Unhealthy Food Access In Austin, Texas, Junfeng Jiao

Research Collection College of Integrative Studies

Food deserts—areas with a significant low-income population experiencing low accessibility to healthy food sources—have been well studied in terms of their connection to obesity and its related health outcomes. Measuring food accessibility is the key component in food desert research. However, previous studies often measured food accessibility based on large geographic units (e.g. census tract, zip code) with few transportation modes (e.g. driving or taking public transit) and limited vulnerable population measures. This paper aims to demonstrate a new method to measure food access for different vulnerable population groups at a smaller geographic scale with different transportation modes. In detail, …


Is Only One Gps Position Sufficient To Locate You To The Road Network Accurately?, Hao Wu, Weiwei Sun, Baihua Zheng Sep 2016

Is Only One Gps Position Sufficient To Locate You To The Road Network Accurately?, Hao Wu, Weiwei Sun, Baihua Zheng

Research Collection School Of Computing and Information Systems

Locating only one GPS position to a road segment accurately is crucial to many location-based services such as mobile taxihailing service, geo-tagging, POI check-in, etc. This problem is challenging because of errors including the GPS errors and the digital map errors (misalignment and the same representation of bidirectional roads) and a lack of context information. To the best of our knowledge, no existing work studies this problem directly and the work to reduce GPS signal errors by considering hardware aspect is the most relevant. Consequently, this work is the first attempt to solve the problem of locating one GPS position …


Public Participatory Gis And The Geography Of Inclusion, Steven M. Radil, Junfeng Jiao Apr 2016

Public Participatory Gis And The Geography Of Inclusion, Steven M. Radil, Junfeng Jiao

Research Collection College of Integrative Studies

Public participatory geographic information systems (PPGIS) have been advanced as a means to include those who have been traditionally excluded from numerous place-specific governance activities, including planning and policymaking and as a way to resolve some of the long-standing tensions between critical traditions in human geography and the ever-expanding field of GIS. Despite the rapid adoption of participatory GIS by academics, government officials, and planning professionals, there are few guidelines of best practices for PPGIS researchers and practitioners to draw on and little effort has been made to understand how and in what ways PPGIS efforts are (or perhaps are …


Towards Integrated Historical Climate Research: The Example Of Atmospheric Circulation Reconstructions Over The Earth, R. Allan, G. Endfield, V. Damodaran, G. Adamson, M. Hannaford, F. Carroll, N. Macdonald, N. Groom, J. Jones, Fiona Williamson, E. Hendy, P. Holper, J. Pablo, L. Hughes, L. Arroyo-Mora, R. Bickers, A.-M. Bliuc Mar 2016

Towards Integrated Historical Climate Research: The Example Of Atmospheric Circulation Reconstructions Over The Earth, R. Allan, G. Endfield, V. Damodaran, G. Adamson, M. Hannaford, F. Carroll, N. Macdonald, N. Groom, J. Jones, Fiona Williamson, E. Hendy, P. Holper, J. Pablo, L. Hughes, L. Arroyo-Mora, R. Bickers, A.-M. Bliuc

Research Collection College of Integrative Studies

Climate change has become a key environmental narrative of the 21st century. However, emphasis on the science of climate change has overshadowed studies focusing on human interpretations of climate history, of adaptation and resilience, and of explorations of the institutions and cultural coping strategies that may have helped people adapt to climate changes in the past. Moreover, although the idea of climate change has been subject to considerable scrutiny by the physical sciences, recent climate scholarship has highlighted the need for a re-examination of the cultural and spatial dimensions of climate, with contributions from the interpretive humanities and social sciences. …


Audience Segmentation For Campaign Design: Addressing Climate Change In Singapore, Benjamin H. Detenber, Sonny Rosenthal, Youqing Liao, Shirley S. Ho Jan 2016

Audience Segmentation For Campaign Design: Addressing Climate Change In Singapore, Benjamin H. Detenber, Sonny Rosenthal, Youqing Liao, Shirley S. Ho

Research Collection College of Integrative Studies

A nationally representative telephone survey (n = 1,006) was conducted to understand how different groups of Singaporeans regard the issue of climate change and their inclination toward action in dealing with it. We measured attitudes, knowledge, and perceptions of the problem of climate change and the role of various stakeholders in addressing it. The data were subjected to a latent class analysis to produce three distinctive segments of the population: the concerned, the disengaged, and the passive. These segments stand in contrast to those discovered in the United States, Australia, Germany, and India and suggest different strategies for public engagement …


Public Engagement, Historians And Higher Education: A Retrospective Uk Case Study, Fiona Williamson Sep 2015

Public Engagement, Historians And Higher Education: A Retrospective Uk Case Study, Fiona Williamson

Research Collection College of Integrative Studies

Focussing on the practice of public engagement and the teaching of history in higher education, this article will argue that public engagement is a welcome platform for sustaining humanities education through the economic stagnation and educational changes that have impacted Europe in the early 21st century. However, effective public engagement is becoming an increasingly important practice that universities are implementing all over the globe. Based on a case study of a course module run at a UK university for final-year undergraduates, this article proposes a practical framework for humanities departments to embed public engagement into departmental teaching programmes. It will …


Hospital To Home: Interoperability In The Health Ecosystem, Francis Puno Apr 2015

Hospital To Home: Interoperability In The Health Ecosystem, Francis Puno

Asian Management Insights

Mobile health solutions have created a revolution in the global healthcare ecosystem.


Storm Preparedness: A Case Study Of Delaware County, Indiana, Junfeng Jiao, Timothy R. Phelps, Yuan Li Jan 2015

Storm Preparedness: A Case Study Of Delaware County, Indiana, Junfeng Jiao, Timothy R. Phelps, Yuan Li

Research Collection College of Integrative Studies

Communities throughout the world have to prepare to handle severe weather. The United States sees an especially high number of tornadoes and severe thunderstorms east of the Rocky Mountains. The State of Indiana often ranks among the highest number of tornadoes per square mile, requiring counties to be prepared for storms and severe weather. This research uses ArcGIS to analyze the effectiveness of Delaware County, Indiana, in severe weather warning. Looking at the distribution of emergency equipment, this research showed that Delaware County is well suited to handle emergency storm situations, with only Yorktown being insufficient in the distribution of …


A People’S Atlas Of Muncie: Citizen Representations Of Urban Space, Junfeng Jiao, Steven M. Radil, Jenna Harbin, Yuan Li Jan 2015

A People’S Atlas Of Muncie: Citizen Representations Of Urban Space, Junfeng Jiao, Steven M. Radil, Jenna Harbin, Yuan Li

Research Collection College of Integrative Studies

Geographic Information Systems (GIS) are an essential tool for analyzing and representing spatial information. The integration of GIS with qualitative research techniques can create new ways to represent data with multiple meanings incorporated, and drive change in communities and social actions. This project used mental mapping as a tool to collect data and insight from community members around Muncie, Indiana, and to introduce students to a different way of collecting data. By using these methods, students were able to get a better understanding of valuable research tools while collecting necessary data for the Muncie neighborhoods base future plans.


Review: Humanist Geography: An Individual's Search For Meaning By Yi‐Fu Tuan, Justin K. H. Tse Sep 2014

Review: Humanist Geography: An Individual's Search For Meaning By Yi‐Fu Tuan, Justin K. H. Tse

Research Collection School of Social Sciences

Yi‐Fu Tuan's latest book is a defence of individualism aimed at a wide lay readership, “a book on education that could benefit children everywhere” (p. ix). It is also a fascinating illustration of the relevance of geographies of religion to ongoing interests in humanistic geography. Indeed, one of Tuan's central arguments is that “religious thinking both undergoes and completes humanist thinking” and is therefore not “a relic that humanism has to outgrow,” for that would be a “regrettable” narrowing of the “scope of inquiry” in humanistic geography that “offends the spirit of humanism” (p. 5). It is this latter interest …


The Use Of Geospatial Clustering In Analysing Health Risk Profile, Sue-Mae Yeo, Tin Seong Kam, Kai Xin Thia, Dan Wu Sep 2014

The Use Of Geospatial Clustering In Analysing Health Risk Profile, Sue-Mae Yeo, Tin Seong Kam, Kai Xin Thia, Dan Wu

Research Collection School Of Computing and Information Systems

Background & Hypothesis: The first law of geography states that “everything is related to everything else, but near things are more related than distant things”. This study aims to demonstrate how local indicator of spatial association (LISA) statistics are used to group patients with similar chronic diseases into natural clusters of hotspots found within northern Singapore by incorporating the proximity of their home locations explicitly. Methods: Anonymised chronic patient data collected from Khoo Teck Puat Hospital in 2013 were used for analyses. The data was mapped based on patients' residential addresses. A layer of hexagonal grid objects, each with a …


Review: The Color Of Success: Asian Americans And The Origins Of The Model Minority Myth By Ellen Wu, Justin Kh Tse Mar 2014

Review: The Color Of Success: Asian Americans And The Origins Of The Model Minority Myth By Ellen Wu, Justin Kh Tse

Research Collection School of Social Sciences

Weaving rich institutional histories of groups that have purported to speak for all Asian Americans, like the Japanese American Citizens League and the Chinese Consolidated Benevolent Association, Ellen Wu’s The Color of Success meticulously describes how their claims to represent their ethnic communities were vigorously contested by Japanese and Chinese Americans themselves from the 1930s to the 1960s. Wu sets these representational challenges against the larger backdrop of the rise of an American liberal political framework and its assimilationist agenda for racial minorities in the United States in the 1930s, which was produced by the geopolitical challenges of totalitarian fascism …


Introduction: Religion And Place: Landscape, Politics, And Piety, Elizabeth Olson, Peter Hopkins, Lily Kong Nov 2013

Introduction: Religion And Place: Landscape, Politics, And Piety, Elizabeth Olson, Peter Hopkins, Lily Kong

Research Collection School of Social Sciences

In 2010, a 14-year-old boy was brutally murdered in a suburb outside of Rio de Janeiro when a group of skinheads observed him at a party and suspected that he might be gay (McLoughlin 2011). This scale of horrific homophobia is not uncommon in Brazil, where rates of violence against gays, lesbians, and transgendered people are reported to be amongst the highest in the world. A study conducted with the support of Grupo Gay da Bahia offers the conservative estimate of 260 gays killed in the country in 2010, indicating that rates doubled in only 5 years. The statistic sits …


Balancing Spirituality And Secularism, Globalism And Nationalism: The Geographies Of Identity, Integration And Citizenship In Schools, Lily Kong Oct 2013

Balancing Spirituality And Secularism, Globalism And Nationalism: The Geographies Of Identity, Integration And Citizenship In Schools, Lily Kong

Research Collection School of Social Sciences

Geographies of education have drawn more research attention in the last decade. The varied motivations for geographical attention to education have led to divergent approaches. First, a macro, political economy or "outward looking" approach has examined educational provision and what it tells us about wider social, economic and political processes. Second, a micro, social-cultural or "inward looking" approach has emphasised social difference within school spaces, and the links between home and educational spaces. This latter approach has also acknowledged the importance of the voices of children and young people in understanding educational experiences. In this paper, l take stock of …


Riga: A Rich Internet Geospatial Analytics Application For Area-Based Data, Tin Seong Kam Sep 2013

Riga: A Rich Internet Geospatial Analytics Application For Area-Based Data, Tin Seong Kam

Research Collection School Of Computing and Information Systems

In this information age, more and more public statistical data such as population census, household living, local economy and business establishment are distributed over the internet within the framework of spatial data infrastructure. By and large, these data are organized geographically such as region, province as well as district. Usually, they are published in the form of digital maps over the internet as simple points, lines and polygons markers limited or no analytical function available to transform these data into useful information. To meet the analytical needs of casual public data users, we contribute RIGA, a rich internet geospatial analytics …


The Myths Of G-Tech For Business Decision Making, Tin Seong Kam Sep 2013

The Myths Of G-Tech For Business Decision Making, Tin Seong Kam

Research Collection School Of Computing and Information Systems

More than 80% of organisation data are location related - the locations where transactions are done, where retailers are found, and of customers who buy their products. Since the early 2005, there has been an increasing interest among the business community to use geospatial technology to enhance decision making process at both strategic and operational levels. Millions of dollars and man-hours have been invested into driving their geo-technology development and implementation. The use of geospatial technology in business, however, tends to confine to simple mapping. Many of these failures are the victims of misperception. Some of the perpetrators are practitioners. …


Homo Religiosus? Religion And Immigrant Subjectivities, David Ley, Justin Kh Tse Sep 2013

Homo Religiosus? Religion And Immigrant Subjectivities, David Ley, Justin Kh Tse

Research Collection School of Social Sciences

Once ignored in national and international public policy, religion has made a comeback as policymakers have noticed the significance of the resurgence of religion, especially due to migration flows. While laudatory of these developments, this chapter specifies the need for a theological reading of the migrant religious practitioner as homo religiosus. First, we describe the social geographies of immigrant religion in an international context, drawing attention to the vibrancy of religious devotion, especially Christianity from the global south, among migrant groups. Second, we re-conceptualise religious belief through the theoretical work of John Milbank and Charles Taylor as they recuperate a …


Transnational Youth Transitions: Becoming Adults Between Vancouver And Hong Kong, Justin Kh Tse, Johanna L. Waters Feb 2013

Transnational Youth Transitions: Becoming Adults Between Vancouver And Hong Kong, Justin Kh Tse, Johanna L. Waters

Research Collection School of Social Sciences

In the context of the academic interest shown in the enduring transnation-alism of contemporary migrants and in the modes of transitions to adulthood in different global settings, in this article we examine the transnational lives of adolescents moving between Vancouver (Canada) and Hong Kong. While there is a lot of literature on the parents’ political and economic calculations, there is very little on how adolescents in these situations articulate their geographical sensibilities. We draw on three periods of fieldwork undertaken in 2002, 2008 and 2010 during which we employed a transnational methodology to interview young people in Vancouver and Hong …


Landscape Configuration And Urban Heat Island Effects: Assessing The Relationship Between Landscape Characteristics And Land Surface Temperature In Phoenix, Arizona, John Patrick Connors, Christopher S. Galletti, Winston T. L. Chow Feb 2013

Landscape Configuration And Urban Heat Island Effects: Assessing The Relationship Between Landscape Characteristics And Land Surface Temperature In Phoenix, Arizona, John Patrick Connors, Christopher S. Galletti, Winston T. L. Chow

Research Collection School of Social Sciences

The structure of urban environments is known to alter local climate, in part due to changes in land cover. A growing subset of research focuses specifically on the UHI in terms of land surface temperature by using data from remote sensing platforms. Past research has established a clear relationship between land surface temperature and the proportional area of land covers, but less research has specifically examined the effects of the spatial patterns of these covers. This research considers the rapidly growing City of Phoenix, Arizona in the United States. To better understand how landscape structure affects local climate, we explored …


Grounded Theologies: ‘Religion’ And The ‘Secular’ In Human Geography, Justin K. H. Tse Feb 2013

Grounded Theologies: ‘Religion’ And The ‘Secular’ In Human Geography, Justin K. H. Tse

Research Collection School of Social Sciences

This paper replies to Kong’s (2010) lament that geographers of religion have not sufficiently intervened in religious studies. It advocates ‘grounded theologies’ as a rubric by which to investigate contemporary geographies of religion in a secular age. Arguing that secularization can itself be conceived as a theological process, the paper critiques a religious/secular dichotomy and argues that individualized spiritualities presently prevalent are indicative of Taylor’s (2007) nova effect of proliferating grounded theologies. Case studies are drawn from social and cultural geographies of religious intersectionalities and from critical geopolitics.


Visualization For Anomaly Detection And Data Management By Leveraging Network, Sensor And Gis Techniques, Zhaoxia Wang, Chee Seng Chong, Rick S. M. Goh, Wanqing Zhou, Dan Peng, Hoong Chor Chin Dec 2012

Visualization For Anomaly Detection And Data Management By Leveraging Network, Sensor And Gis Techniques, Zhaoxia Wang, Chee Seng Chong, Rick S. M. Goh, Wanqing Zhou, Dan Peng, Hoong Chor Chin

Research Collection School Of Computing and Information Systems

This paper studies the importance of visualization for discerning and interpreting patterns of data and its application for solving real problems, such as anomaly detection and data management. There are various ways to realize visualization to cater to the needs of numerous real life applications. Depending on needs, a combination of some of these ways may be required for presenting an effective visualization. The authors present visualization schemes for anomaly detection/condition monitoring and data management by leveraging network techniques and combining them with modern techniques such as sensor, database, mobile communication, GPS and GIS techniques. Two case studies are presented …


How To Identify Food Deserts: Measuring Physical And Economic Access To Supermarkets In King County, Washington, Junfeng Jiao, Anne V. Moudon, Jared Ulmer, Philip M. Hurvitz, Adam Drewnowski Oct 2012

How To Identify Food Deserts: Measuring Physical And Economic Access To Supermarkets In King County, Washington, Junfeng Jiao, Anne V. Moudon, Jared Ulmer, Philip M. Hurvitz, Adam Drewnowski

Research Collection College of Integrative Studies

Objectives. We explored new ways to identify food deserts. Methods. We estimated physical and economic access to supermarkets for 5 low-income groups in Seattle–King County, Washington. We used geographic information system data to measure physical access: service areas around each supermarket were delineated by ability to walk, bicycle, ride transit, or drive within 10 minutes. We assessed economic access by stratifying supermarkets into low, medium, and high cost. Combining income and access criteria generated multiple ways to estimate food deserts. Results. The 5 low-income group definitions yielded total vulnerable populations ranging from 4% to 33% of the county’s population. Almost …


The Geographies Of Religious Conversion, Orlando Woods Aug 2012

The Geographies Of Religious Conversion, Orlando Woods

Research Collection School of Social Sciences

The paper reviews the corpus of research that attempts to explain the process of religious conversion, and explores the ways in which geographers can add new perspectives to the discourse. It argues that religious conversion is a phenomenon that goes beyond the reorientation of individual belief, and is instead a process of change that involves the (re)definition of self and other. Five conceptual frames are proposed - (1) conversion of space; (2) spaces of conversion; (3) spaces of negotiation; (4) the (im)mobile convert; and (5) the (dis)embodied convert - which are used to help define the geographies of religious conversion.


Vulnerability To Extreme Heat In Metropolitan Phoenix: Spatial, Temporal, And Demographic Dimensions, Winston T. L. Chow, Wen-Ching Chuang, Patricia Gober Feb 2012

Vulnerability To Extreme Heat In Metropolitan Phoenix: Spatial, Temporal, And Demographic Dimensions, Winston T. L. Chow, Wen-Ching Chuang, Patricia Gober

Research Collection School of Social Sciences

This study assessed the spatial distribution of vulnerability to extreme heat in 1990 and 2000 within metropolitan Phoenix based on an index of seven equally weighted measures of physical exposure and adaptive capacity. These measures were derived from spatially interpolated climate, normalized differential vegetation index, and U.S. Census data. From resulting vulnerability maps, we also analyzed population groups living in areas of high heat vulnerability. Results revealed that landscapes of heat vulnerability changed substantially in response to variations in physical and socioeconomic factors, with significant alterations to spatial distribution of vulnerability especially between eastern and western sectors of Phoenix. These …


Singapore’S Chinatown: Nation Building And Heritage Tourism In A Multiracial City, Brenda S. A. Yeoh, Lily Kong Jan 2012

Singapore’S Chinatown: Nation Building And Heritage Tourism In A Multiracial City, Brenda S. A. Yeoh, Lily Kong

Research Collection School of Social Sciences

This paper focuses on the pivotal role played by the state in refashioning the Chinatown landscape as part of both nation-building and heritage tourism projects, and the ensuing cultural politics. After a brief history of the creation of Singapore’s Chinatown, the paper discusses, first, Chinatown’s place in Singapore’s post-independence nation-building project and, second, the reconfiguration of the Chinatown landscape as a tourism asset. The final section reflects on the changing politics of place as Chinatown gains legitimacy in state discourses on heritage, tourism and multiculturalism, as well as in the popular imagination as an ethnic precinct par excellence.


Quasi‐Hidden Markov Model And Its Applications In Cluster Analysis Of Earthquake Catalogs, Zhengxiao Wu Dec 2011

Quasi‐Hidden Markov Model And Its Applications In Cluster Analysis Of Earthquake Catalogs, Zhengxiao Wu

Research Collection School of Economics

We identify a broad class of models, quasi-hidden Markov models (QHMMs), which include hidden Markov models (HMMs) as special cases. Applying the QHMM framework, this paper studies how an earthquake cluster propagates statistically. Two QHMMs are used to describe two different propagating patterns. The “mother-and-kids” model regards the first shock in an earthquake cluster as “mother” and the aftershocks as “kids,” which occur in a neighborhood centered by the mother. In the “domino” model, however, the next aftershock strikes in a neighborhood centered by the most recent previous earthquake in the cluster, and therefore aftershocks act like dominoes. As the …


From Precarious Labor To Precarious Economy? Planning For Precarity In Singapore's Creative Economy, Lily Kong Jun 2011

From Precarious Labor To Precarious Economy? Planning For Precarity In Singapore's Creative Economy, Lily Kong

Research Collection School of Social Sciences

The important place of the oftentimes "hidden" independent worker, or freelancer, has been acknowledged in developed countries where the creative economy has grown. These creative workers do not belong to the traditional employment set-up organized around firms. Instead, they move from portfolio to portfolio, assignment to assignment, interspersing corporation-based jobs with periods of self employment. Their work offers freedom, independence and creative space, but has also been characterized as precarious, because the securities of old working patterns no longer hold. While governments in many countries and cities have become attracted to the potential of the creative economy, those that have …