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Articles 121 - 150 of 1540
Full-Text Articles in Entire DC Network
Influence Of Climate Zone Shifts On Forest Ecosystems In Northeastern United States And Maritime Canada, Samuel Roy, Xinyuan Wei, Aaron Weiskittel, Daniel J. Hayes, Peter Nelson, Alexandra R. Contosta
Influence Of Climate Zone Shifts On Forest Ecosystems In Northeastern United States And Maritime Canada, Samuel Roy, Xinyuan Wei, Aaron Weiskittel, Daniel J. Hayes, Peter Nelson, Alexandra R. Contosta
Faculty Publications
Climate zones play a significant role in shaping the forest ecosystems located within them by influencing multiple ecological processes, including growth, disturbances, and species interactions. Therefore, delineation of current and future climate zones is essential to establish a framework for understanding and predicting shifts in forest ecosystems. In this study, we developed and applied an efficient approach to delineate regional climate zones in the northeastern United States and maritime Canada, aiming to characterize potential shifts in climate zones and discuss associated changes in forest ecosystems. The approach comprised five steps: climate data dimensionality reduction, sampling scenario design, cluster generation, climate …
Using Stereo-A Data From April To November 2023 As A Sub-L1 Monitor, Eva Weiler, Christian Möstl, Emma E. Davies, Tanja Amerstorfer, Ute V. Amerstorfer, Hannah T. Rüdisser, Rachel L. Bailey, Astrid Veronig, Timothy Horbury, Noé Lugaz, Justin Le Louëdec, Maike Bauer
Using Stereo-A Data From April To November 2023 As A Sub-L1 Monitor, Eva Weiler, Christian Möstl, Emma E. Davies, Tanja Amerstorfer, Ute V. Amerstorfer, Hannah T. Rüdisser, Rachel L. Bailey, Astrid Veronig, Timothy Horbury, Noé Lugaz, Justin Le Louëdec, Maike Bauer
Faculty Publications
Sub-L1 monitors are currently being researched in mission concepts for small satellites and may be deployed on distant retrograde orbits around the Earth in the future. Depending on the location of the sub-L1 monitor, the lead time for the arrival of coronal mass ejections (CMEs) and for determining their geo-effectiveness could be prolonged. If the sub-L1 monitor was to orbit the Earth at a distance of 0.05 AU, as is proposed for the MIIST mission, for example, Dst predictions could be made up to 5 hours in advance. The close encounter of STEREO-A and Wind from April 2023 to November …
Using Stereo-A Data From April To November 2023 As A Sub-L1 Monitor, Eva Weiler, Christian Möstl, Emma E. Davies, Tanja Amerstorfer, Ute V. Amerstorfer, Hannah T. Rüdisser, Rachel L. Bailey, Astrid Veronig, Timothy Horbury, Noé Lugaz, Justin Le Louëdec, Maike Bauer
Using Stereo-A Data From April To November 2023 As A Sub-L1 Monitor, Eva Weiler, Christian Möstl, Emma E. Davies, Tanja Amerstorfer, Ute V. Amerstorfer, Hannah T. Rüdisser, Rachel L. Bailey, Astrid Veronig, Timothy Horbury, Noé Lugaz, Justin Le Louëdec, Maike Bauer
Faculty Publications
Sub-L1 monitors are currently being researched in mission concepts for small satellites and may be deployed on distant retrograde orbits around the Earth in the future. Depending on the location of the sub-L1 monitor, the lead time for the arrival of coronal mass ejections (CMEs) and for determining their geo-effectiveness could be prolonged. If the sub-L1 monitor was to orbit the Earth at a distance of 0.05 AU, as is proposed for the MIIST mission, for example, Dst predictions could be made up to 5 hours in advance. The close encounter of STEREO-A and Wind from April 2023 to November …
The Space Weather Research On Coronal Mass Ejections Required Before Operational Sub-L1 Monitors, Noé Lugaz, Florian Regnault, Sahanaj Banu, Nada Al-Haddad, Bin Zhuang, Christina Lee, Charles J. Farrugia, Christian Möstl, Reka M. Winslow, Emma Davies, Camilla Scolini, Wenyuan Yu, Antoinette B. Galvin
The Space Weather Research On Coronal Mass Ejections Required Before Operational Sub-L1 Monitors, Noé Lugaz, Florian Regnault, Sahanaj Banu, Nada Al-Haddad, Bin Zhuang, Christina Lee, Charles J. Farrugia, Christian Möstl, Reka M. Winslow, Emma Davies, Camilla Scolini, Wenyuan Yu, Antoinette B. Galvin
Faculty Publications
In-situ measurements from the Sun-Earth Lagrangian L1 point typically provide a 20-minute to 1-hour advanced warning of incoming interplanetary (IP) shocks, magnetic clouds before impact at the nose of Earth's magnetopause. Sub-L1 monitors may provide measurements sunward of the L1 point to improve the lead times for such transients to several hours, and various mission architecture have been proposed for more than 25 years. Because CMEs and shocks do not propagate exactly radially, the location of such a monitor with respect to the Sun-Earth line is a key parameter to take into account when designing such missions. Here, we highlight …
Assessing Forage Research And Education Needs Of Organic Dairy Farms In The United States, Eric Hatungimana, Heather M. Darby, Kathy J. Soder, Sara E. Ziegler, Andre F. Brito, Lisa Kissing Kucek, Heathcliffe Riday, E Charles Brummer
Assessing Forage Research And Education Needs Of Organic Dairy Farms In The United States, Eric Hatungimana, Heather M. Darby, Kathy J. Soder, Sara E. Ziegler, Andre F. Brito, Lisa Kissing Kucek, Heathcliffe Riday, E Charles Brummer
Faculty Publications
The viability of organic dairy operations in the United States (US) relies on forage production. The objectives of this study were to (1) assess producer and farm information regarding current forage production practices and producer knowledge gaps and (2) identify forage research and educational needs of organic dairy producers across the US. A survey was distributed to 643 organic dairy producers across the US, with 165 respondents (26% response rate). A focus group consisting of extension professionals, university researchers and staff, consultants, dairy industry representatives and organic dairy producers was also consulted for forage research needs. Results showed that approximately …
Assessing Forage Research And Education Needs Of Organic Dairy Farms In The United States, Eric Hatungimana, Heather M. Darby, Kathy J. Soder, Sara E. Ziegler, Andre F. Brito, Lisa Kissing Kucek, Heathcliffe Riday, E Charles Brummer
Assessing Forage Research And Education Needs Of Organic Dairy Farms In The United States, Eric Hatungimana, Heather M. Darby, Kathy J. Soder, Sara E. Ziegler, Andre F. Brito, Lisa Kissing Kucek, Heathcliffe Riday, E Charles Brummer
Faculty Publications
The viability of organic dairy operations in the United States (US) relies on forage production. The objectives of this study were to (1) assess producer and farm information regarding current forage production practices and producer knowledge gaps and (2) identify forage research and educational needs of organic dairy producers across the US. A survey was distributed to 643 organic dairy producers across the US, with 165 respondents (26% response rate). A focus group consisting of extension professionals, university researchers and staff, consultants, dairy industry representatives and organic dairy producers was also consulted for forage research needs. Results showed that approximately …
Looking North: Classroom Engagements Into The Relevance And Context Of A Rapidly Changing Arctic, Elaine Alvey
Looking North: Classroom Engagements Into The Relevance And Context Of A Rapidly Changing Arctic, Elaine Alvey
Faculty and Staff
We need to save the Arctic not because of the polar bears, and not because it is the most beautiful place in the world, but because our very survival depends upon it.—Lewis Gordon Pugh, as quoted in Mead (Citation2022) The Arctic is emerging as an increasingly relevant and rapidly changing region of the world. A changing climate has brought increased attention to the dynamic and strategic nature of the North, but the Arctic has always been a homeland to a variety of distinct cultures and a unique ecosystem. Arctic imaginaries of an untouched and wild North continue to flourish in …
Michael Farmer. An Atlas Of The Tibetan Plateau. Volume 50 In Brill’S Tibetan Studies Library Series, Constance Wilkinson
Michael Farmer. An Atlas Of The Tibetan Plateau. Volume 50 In Brill’S Tibetan Studies Library Series, Constance Wilkinson
Comparative Civilizations Review
An Atlas of the Tibetan Plateau is a masterful melding of science and art created by British architect and cartographer Michael Farmer. Based on extensive contemporary data painstakingly woven from satellite imagery, the intrepid and apparently indefatigable Farmer has, over decades, produced a unique and indispensable reference work.
Gendered Perceptions And Socio-Economic And Spatial Determinants Of Fear Of Crime: An Empirical Analysis In Szczecin, Poland, Natalia Sypion, Arkadiusz Kołodziej, Michael Leitner, Marek Dutkowski
Gendered Perceptions And Socio-Economic And Spatial Determinants Of Fear Of Crime: An Empirical Analysis In Szczecin, Poland, Natalia Sypion, Arkadiusz Kołodziej, Michael Leitner, Marek Dutkowski
Faculty Publications
The study of the fear of crime phenomenon provides a socially and politically important research question. Many studies show that gender differentiates the fear of crime, which is why we examine this phenomenon in a spatial perspective. The female versus male perspective of feelings of safety in residential areas were significantly different. The research was carried out using the CAWI technique in the city of Szczecin, in Poland (n=346). The research also examined which factors influenced the fear of crime the most: darkness, socio-economic characteristics, type of violations, number of registered crimes, or the assessment of police work. The research …
Modeling Archaic Land Use And Mobility In North-Central Belize, Marieka Brouwer Burg, Eleanor Harrison-Buck
Modeling Archaic Land Use And Mobility In North-Central Belize, Marieka Brouwer Burg, Eleanor Harrison-Buck
Faculty Publications
The Archaic period has not been as widely studied in Mesoamerica as it has been in other parts of the Americas. This problem stems from intractable issues such as low archaeological visibility and high post-depositional disturbance. And, while existing Archaic data from northern Belize indicates that foraging groups practiced diverse adaptations, little theoretical effort has been dedicated toward developing frames of reference for understanding the coupled human-landscape interactions ongoing during this period. Here, we outline a multi-method approach for situating hunter-gatherer-fisher-emergent horticultural land use behaviors, including comparative ethnographic data, extant archaeological information, and geospatial modeling. We set out a series …
Modeling Archaic Land Use And Mobility In North-Central Belize, Marieka Brouwer Burg, Eleanor Harrison-Buck
Modeling Archaic Land Use And Mobility In North-Central Belize, Marieka Brouwer Burg, Eleanor Harrison-Buck
Faculty Publications
The Archaic period has not been as widely studied in Mesoamerica as it has been in other parts of the Americas. This problem stems from intractable issues such as low archaeological visibility and high post-depositional disturbance. And, while existing Archaic data from northern Belize indicates that foraging groups practiced diverse adaptations, little theoretical effort has been dedicated toward developing frames of reference for understanding the coupled human-landscape interactions ongoing during this period. Here, we outline a multi-method approach for situating hunter-gatherer-fisher-emergent horticultural land use behaviors, including comparative ethnographic data, extant archaeological information, and geospatial modeling. We set out a series …
Formulating Utopian Pasts: Time As A Coping Method For Lgbtq+ Floridians, Elise M. Kuechle
Formulating Utopian Pasts: Time As A Coping Method For Lgbtq+ Floridians, Elise M. Kuechle
USF Tampa Graduate Theses and Dissertations
Florida has emerged in recent years as a breeding ground for a new generation of anti-LGBTQ+ legislation. The state has introduced 10 anti-LGBTQ+ laws so far in 2023, touching on issues such as bathroom access, healthcare, and education. This paper analyzes the experiences of queer and transgender people living in Florida to ask: How do LGBTQ+ people in Florida cope phenomenologically with rising anti-LGBTQ+ discrimination? Drawing on data from 22 interviews with LGBTQ+ people situated in and around Florida in 2023, this paper captures a distinct political moment for the people that I spoke with, as anti-LGBTQ+ sentiments continue to …
What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter
What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter
Faculty Publications
Volume is an important attribute used in many forest management decisions. Data from 83 fixed-area plots located in central New Brunswick, Canada, are used to examine how different measures of stand-level diameter and height influence volume prediction using a stand-level variant of Honer's (1967) volume equation. When density was included in the models (Volume=f(Diameter,Height,Density)) choice of diameter measure was more important than choice of height measure. When density was not included (Volume=f(Diameter,Height)), the opposite was true. For models with density included, moment-based estimators of stand diameter and height performed better than all other measures. For models without density, largest tree …
What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter
What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter
Faculty Publications
Volume is an important attribute used in many forest management decisions. Data from 83 fixed-area plots located in central New Brunswick, Canada, are used to examine how different measures of stand-level diameter and height influence volume prediction using a stand-level variant of Honer's (1967) volume equation. When density was included in the models (Volume=f(Diameter,Height,Density)) choice of diameter measure was more important than choice of height measure. When density was not included (Volume=f(Diameter,Height)), the opposite was true. For models with density included, moment-based estimators of stand diameter and height performed better than all other measures. For models without density, largest tree …
Exploring The Direct Impacts Of Geography On Sport Organizations Through Athletic Association Movement, Dylan Williams, Brian Soebbing, Chad Seifried
Exploring The Direct Impacts Of Geography On Sport Organizations Through Athletic Association Movement, Dylan Williams, Brian Soebbing, Chad Seifried
Journal of Issues in Intercollegiate Athletics
No abstract provided.
Spatial And Temporal Discrepancy Of Road Noise Level In Unaizah City, Haifa Ali Al-Khushipan Dr.
Spatial And Temporal Discrepancy Of Road Noise Level In Unaizah City, Haifa Ali Al-Khushipan Dr.
Journal of Arabic Sciences and Humanities
The paper is entitled “Spatial and temporal discrepancy of road noise level in Unaizah City”. It is concerned with measuring road noise levels in Unaizah, to detect the spatial and temporal variation of its types, relying on DSLM-LA:2851264, GPS, and QGIS to download road data from Open Street Map and represent on maps, in addition to methods for detecting spatial and temporal variation in the study data. It concludes that noise rates on the roads increased, especially during (5 - 7 p.m.), in addition to the spatial and temporal variation in noise rates.King Abdulaziz Road recorded the highest levels of …
Comparing The Effectiveness Of Static And Dynamic Audiovisual In An Additional Geography Lesson In One Pathway College In Jakarta, Erni Adelina, Peny Meliaty Hutabarat
Comparing The Effectiveness Of Static And Dynamic Audiovisual In An Additional Geography Lesson In One Pathway College In Jakarta, Erni Adelina, Peny Meliaty Hutabarat
Jurnal Vokasi Indonesia
Students are now used to using audiovisual platforms to learn as they once were forced to adapt to this type of learning due to face-to-face lessons were impossible at that time because of the pandemic. Audiovisual learning resources came out sporadically to accommodate the needs of study at home or anywhere possible. The static audiovisual (enhanced podcast) and dynamic audiovisual (video) are two types of virtual platforms educators continuously harness to support their lesson teachings even though the face-to-face meetings have been allowed gradually. However, there are not many studies conducted to analyze whether one type is more effective in …
Ucf Pegasus Plan - 1st Grade - Maps & Globes, Anna C. Howell, Alejandra Vega-Casillas, Gianna M. Astriab, Georgia De Los Santos, Lindsay Schultz
Ucf Pegasus Plan - 1st Grade - Maps & Globes, Anna C. Howell, Alejandra Vega-Casillas, Gianna M. Astriab, Georgia De Los Santos, Lindsay Schultz
Pegasus Plans: Social Studies Unit Plans for Florida Teachers
During this unit, students will explore, analyze, and construct maps. The students learn about what a globe is and how they are similar to and different from traditional maps. The daily lessons delve into the elements of maps, including cardinal directions, map symbols, and map keys, in addition to the seven continents and what makes each of these land masses unique. Through developmentally appropriate songs, games, and books, students will be highly engaged throughout this geography unit.
Effects Of Short-Term Rentals On Neighborhoods: Crime, Economic Development, And City Ordinances In Rochester, Minnesota, Ethan Smith
All Graduate Theses, Dissertations, and Other Capstone Projects
The concept of online-based peer-to-peer (P2P) short-term rental (STR) lodging, such as Airbnb and Vrbo, is still a relatively recent phenomenon that has experienced rapid growth in the past decade. Due to the rapid growth of STRs, many areas of this phenomenon have been left relatively unexplored, such as the relationship between STRs and neighborhood crime. The association between neighborhood crime and STRs is attributed to the negative spotlight in the news, causing STRs to develop a negative connotation due to their perceived impacts on neighborhoods. Due to that connotation, it is believed that STRs contribute to neighborhood crime because …
Evaluating The Effects Of Topographic Position On Soil Carbon Content In Prairie Pothole Agricultural Landscapes, Grace Uchytil
Evaluating The Effects Of Topographic Position On Soil Carbon Content In Prairie Pothole Agricultural Landscapes, Grace Uchytil
All Graduate Theses, Dissertations, and Other Capstone Projects
Prairie potholes are depressional wetland features found throughout the northern Great Plains region of the United States and Canada. These wetlands have high potential to store large quantities of carbon, but many have been altered for conventional agricultural practices. Recently, conservation practices (e.g., no-till and cover crops) and federal conservation programs (e.g., Conservation Reserve Program (CRP)) are contributing to these landscapes returning to their more natural state. The restoration of prairie pothole soils has the potential to increase their carbon storage abilities, which would help decrease CO2 in the atmosphere and aid in mitigating climate change. The purpose of this …
Post-Glacial Landscape Evolution Of The Lower St. Croix River Valley: The Enigma Of Glacial Lake Grantsburg, The Osceola Bench, And The St. Croix Dells, Hunter Delikowski
Post-Glacial Landscape Evolution Of The Lower St. Croix River Valley: The Enigma Of Glacial Lake Grantsburg, The Osceola Bench, And The St. Croix Dells, Hunter Delikowski
All Graduate Theses, Dissertations, and Other Capstone Projects
The St. Croix River valley (SCRV) is the product of dyssynchronous glacial advance and retreat of several glacial lobes during regional deglaciation of the Late Pleistocene-Early Holocene transition. Additionally, the SCRV has been dramatically shaped by multiple proglacial lake drainage episodes. Therefore, the SCRV is an important case study to understanding the impacts of proglacial lake spillover processes. However, the magnitude, frequency, timing, duration, and geomorphic impacts of these floods remain enigmatic. We focus on a specific reach of the SCRV, which we name the Lower SCRV for the purpose of this study. The lower SCRV contains several anomalous landforms …
Making Freedom A Place: Geographies Of Social Movement Activism And Repression In Oakland, California, Sophie Mcclain
Making Freedom A Place: Geographies Of Social Movement Activism And Repression In Oakland, California, Sophie Mcclain
Pitzer Senior Theses
This senior thesis explores the ways in which people in Oakland, California make place and spaces through their activism and subsequently how these places and spaces are policed by the state. Building off of the works of Ruth Wilson Gilmore, Robin D.G. Kelley, David Harvey, and Henri Lefebvre, McClain examines the ways in which activists create abolition geographies while engaging in their right to the city through social movement activism with a particular focus on the Black Panther Party and Occupy Wall Street Movement in Oakland. Through these examples, McClain shows how abolition geographies often exist in a dialectical relationship …
The Monadnock Volume 63, 2024, Clark University Geographical Society
The Monadnock Volume 63, 2024, Clark University Geographical Society
The Monadnock (Clark Geographical Society)
Volume 63 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).
Asynchronous Movement Patterns Between Breeding And Stopover Locations In A Long-Distance Migratory Songbird, Theodore Zenzal, Andrea Contina, Hannah Vander Zanden, Leanne Kuwahara, Daniel Allen, Kristen Covino
Asynchronous Movement Patterns Between Breeding And Stopover Locations In A Long-Distance Migratory Songbird, Theodore Zenzal, Andrea Contina, Hannah Vander Zanden, Leanne Kuwahara, Daniel Allen, Kristen Covino
Faculty Publications
The species-specific migratory patterns and strategies of many songbirds remain unknown or understudied, as research in animal ecology is biased toward the breeding period, with the fewest studies on the migratory period across taxa. Identifying large-scale spatiotemporal migratory patterns is challenging, as individuals within a species may vary in their migratory behavior and strategies. The Yellow Warbler (Setophaga petechia) is a Nearctic-Neotropical migrant that is relatively well studied during the breeding season, but its species-wide migratory patterns remain understudied. Our aim in studying Yellow Warbler movement ecology was to characterize temporal migration patterns during fall migration. We sought to determine …
Investigating Drought Response And Paleoclimate Potential Of A New Network Of White Oak Chronologies In Western Kentucky, Usa, Audrey J. Heichelbech, Maegen L. Rochner, Megan Gibson
Investigating Drought Response And Paleoclimate Potential Of A New Network Of White Oak Chronologies In Western Kentucky, Usa, Audrey J. Heichelbech, Maegen L. Rochner, Megan Gibson
Undergraduate Research Events
In Kentucky, historic and paleo-climate data are limited, and current understanding of long-term climate change in the state relies on instrumental data spanning only 1895-present. Proxy data are necessary to extend the temporal and spatial span of climate information. One potential proxy source for Kentucky is tree ring data, but currently, only four such datasets are publicly available on the International Tree Ring Data Bank (ITRDB). Archaeological and archival timber sources may help to fill in this gap. In the 1940s, Florence Hawley-Ellis, the first woman dendrochronologist, collected samples of white oak (Quercus alba L.) from four counties in western …
Human Mobility And The Infectious Disease Transmission: A Systematic Review, M. Naser Lessani, Zhenlong Li, Fengrui Jing, Shan Qiao Ph.D., Jiajia Zhang Ph.D., Bankole Olatosi Ph.D., Xiaoming Li Ph.D.
Human Mobility And The Infectious Disease Transmission: A Systematic Review, M. Naser Lessani, Zhenlong Li, Fengrui Jing, Shan Qiao Ph.D., Jiajia Zhang Ph.D., Bankole Olatosi Ph.D., Xiaoming Li Ph.D.
Faculty Publications
Recent decades have witnessed several infectious disease outbreaks, including the coronavirus disease (COVID-19) pandemic, which had catastrophic impacts on societies around the globe. At the same time, the twenty-first century has experienced an unprecedented era of technological development and demographic changes: exploding population growth, increased airline flights, and increased rural-to-urban migration, with an estimated 281 million international migrants worldwide in 2020, despite COVID-19 movement restrictions. In this review, we synthesized 195 research articles that examined the association between human movement and infectious disease outbreaks to understand the extent to which human mobility has increased the risk of infectious disease outbreaks. …
Asynchronous Movement Patterns Between Breeding And Stopover Locations In A Long-Distance Migratory Songbird, Theodore Zenzal, Andrea Contina, Hannah Vander Zanden, Leanne Kuwahara, Daniel Allen, Kristen Covino
Asynchronous Movement Patterns Between Breeding And Stopover Locations In A Long-Distance Migratory Songbird, Theodore Zenzal, Andrea Contina, Hannah Vander Zanden, Leanne Kuwahara, Daniel Allen, Kristen Covino
Faculty Publications
The species-specific migratory patterns and strategies of many songbirds remain unknown or understudied, as research in animal ecology is biased toward the breeding period, with the fewest studies on the migratory period across taxa. Identifying large-scale spatiotemporal migratory patterns is challenging, as individuals within a species may vary in their migratory behavior and strategies. The Yellow Warbler (Setophaga petechia) is a Nearctic-Neotropical migrant that is relatively well studied during the breeding season, but its species-wide migratory patterns remain understudied. Our aim in studying Yellow Warbler movement ecology was to characterize temporal migration patterns during fall migration. We sought to determine …
Terror And Time: Analyzing Homegrown Terrorism In The United States, Kyser Daniels-Baessler
Terror And Time: Analyzing Homegrown Terrorism In The United States, Kyser Daniels-Baessler
Theses and Dissertations
The events of September 11th, 2001, prompted a global reckoning with the threat of international terrorism, leading to intensified awareness and policy responses worldwide. However, amidst this heightened global focus, the United States has faced a concerning rise in politically motivated violence on its soil. Against this backdrop, this thesis delves into the phenomenon of homegrown terrorism within the United States from 2000 to 2020. By employing advanced geospatial techniques, this study seeks to pinpoint areas nationwide with elevated rates of homegrown terrorist incidents. Moreover, it endeavors to uncover potential temporal correlations between these acts of violence and significant events, …
Traditional Investment Research And Social Networks: Evidence From Facebook Connections, Travis Dyer, Gerrit Köchling, Peter Limbach
Traditional Investment Research And Social Networks: Evidence From Facebook Connections, Travis Dyer, Gerrit Köchling, Peter Limbach
Faculty Publications
We show that investors acquire more public information about firms to which they are more socially proximate. On average, a standard deviation increase in the Social Connectedness Index (Bailey et al., 2018) between a firm’s headquarter county and a searcher county is associated with 30% more EDGAR filing downloads from the searcher county. The effect of social proximity on traditional investment research is distinct from the effect of geographic proximity. We find similar results studying headquarter relocations, investor-level data, and EDGAR downloads from European regions, for which physical distance should be irrelevant. Social proximity matters more during times of high …
Urban Streetscape Changes In Portland, Oregon: A Longitudinal Virtual Audit, Tomoya Hanibuchi, David Banis, Hunter Shobe, Tomoki Nakaya, Shohei Nagata
Urban Streetscape Changes In Portland, Oregon: A Longitudinal Virtual Audit, Tomoya Hanibuchi, David Banis, Hunter Shobe, Tomoki Nakaya, Shohei Nagata
Geography Faculty Publications and Presentations
Streetscape imagery has considerable potential for observing urban change. The literature lacks sufficient longitudinal studies, however, on urban change considering human perception and activities. We conducted a longitudinal virtual audit to observe the change in urban liveliness, human activities, and built environment by examining streetscape imagery taken in the late 2000s and the late 2010s in Portland, Oregon. Eleven untrained crowd workers were recruited to provide liveliness ratings of 24,242 streetscape images for both periods. Tabulation, mapping, and multilevel regression analyses were conducted to observe the distribution, changes in liveliness, and the factors affecting these changes. The results confirmed that …