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Articles 901 - 930 of 12374
Full-Text Articles in Entire DC Network
Cover And Forewords, James W. Gallagher
Migration Models· Application In An African Context (An Analytical Review), Ademola T. Salau
Migration Models· Application In An African Context (An Analytical Review), Ademola T. Salau
The Geographical Bulletin
The history of Africa is full of the accounts of movements of people on large scales. Some of the movements had occurred in the form of conquests in war and some had taken place by a slow and largely peaceful shift to new lands. Such movements we are told, have been a feature of Africa in the past and are one of its most important demographic features at present. There is no phase of African history which can be understood without reference to the movements of people both before and during it." However, there are differences in types, magnitudes and …
Volume 13 Complete Issue, James W. Gallagher
Volume 13 Complete Issue, James W. Gallagher
The Geographical Bulletin
Volume 13 Complete Issue
Locational Characteristics Of Mobile Home Parks In Columbus, Ohio, William F. Doolittle
Locational Characteristics Of Mobile Home Parks In Columbus, Ohio, William F. Doolittle
The Geographical Bulletin
The history of Africa is full of the accounts of movements of people on large scales. Some of the movements had occurred in the form of conquests in war and some had taken place by a slow and largely peaceful shift to new lands. Such movements we are told, have been a feature of Africa in the past and are one of its most important demographic features at present. There is no phase of African history which can be understood without reference to the movements of people both before and during it." However, there are differences in types, magnitudes and …
The Impact Of Land Use On Wildlife Habitat, Dean Wilde
The Impact Of Land Use On Wildlife Habitat, Dean Wilde
The Geographical Bulletin
The scope of biogeography includes, among other things, the analysis of the distribution and redistribution of biota as a result of a more or less purposeful and direct modification of the natural environment by man.! One aspect of human modification of natural environments has been the alteration and destruction of wi Idlife habitats. Wildlife is a product of the land.2 Different kinds of wildlife can occupy the land only so long as their required habitat types exist in a particular spatial arrangement. The maximum population of wildlife that any given unit of land can support, therefore depends on the interspersion …
Editor's Comments, James W. Gallagher
Editor's Comments, James W. Gallagher
The Geographical Bulletin
The fare this issue is varied -- one article deals with some aspects of mobile homes; one with wildlife habitat; and, one with migration. And in the entire lot of them there is only one set of maps -- and those were done by a computer. I keep looking for maps in papers which are submitted. On occasion, there is one. Often there are photos or diagrams -- but not frequently enough. Do we really stress today our basic tools in Geography? Does anyone teach a course in how to photograph as well as how to analyze photos? The National …
Conducting Effective Literature Searches And Writing Strong Abstracts, Bert Chapman
Conducting Effective Literature Searches And Writing Strong Abstracts, Bert Chapman
Libraries Faculty and Staff Presentations
This invited presentation for students at Poland's War Studies University communicates ideas on how Ph.D. students at this institution can enhance their research quality. Specific content includes formulating your research question, determining research aims and methodology, reviewing a research question checklist, understanding the meaning of search terms you propose to utilize, devising effective search strategies, consulting multiple varieties of information resources from multiple countries, finding gaps in literature, being able to distinguish between nuances in literature and data, writing succinct abstracts, and enhancing the clarity of your prose.
Displaced Decarbonization: Climate Necropolitics And The Contested Spatialities Of Green Hydrogen In Namibia, Meredith J. Deboom
Displaced Decarbonization: Climate Necropolitics And The Contested Spatialities Of Green Hydrogen In Namibia, Meredith J. Deboom
Faculty Publications
Green hydrogen is often presented as a transformative solution to the dual challenges of decarbonization and economic development. This article applies the framework of climate necropolitics to interrogate the contested spatialities underlying such “win-win” narratives. It does so through an extended case study of Hyphen Hydrogen Energy, a $10 billion green hydrogen project planned for Lüderitz, Namibia. A remote town of 20,000 in a country with a $12 billion annual GDP, Lüderitz initially appears to be an unlikely host site for the “industrial fuel of the future.” To explain this outcome, I first illustrate how discordant socio-spatial projects—including European energy …
Explaining Youth Driver Licensing Determinants Using Xgboost And Shap, Kailai Wang, Jonas De Vos, Michael Smart, Sicheng Wang
Explaining Youth Driver Licensing Determinants Using Xgboost And Shap, Kailai Wang, Jonas De Vos, Michael Smart, Sicheng Wang
Faculty Publications
This study explores the factors influencing driver's license acquisition among young individuals and examines its broader implications for mobility, safety, and sustainability. Leveraging nationally representative survey data on Millennials and Generation Z, we apply eXtreme Gradient Boosting (XGBoost) and SHapley Additive Explanations (SHAP) to identify key socioeconomic determinants of teenage driver's license attainment. Our findings reveal consistent predictors across both generations, including the percentage of licensed family members, household income per capita, educational attainment, and public transit ridership. We identify meaningful dose-response relationships, such as the increasing influence of licensed household members beyond a 0.75 threshold and the …
Cover And Forewords, James W. Gallagher
Editor's Comments, James W. Gallagher
Editor's Comments, James W. Gallagher
The Geographical Bulletin
Volume 17 is a ont! article effort. Professor Kenneth Holmes has been studying the activities of Sir Francis Drake for some time now. Several things are apparent. First, the literature on Drake is confusing and somewhat contradictory, particularly with respect to the voyages in the north east Pacific Ocean. Second, although Holmes Is an historian, his work generally falls in the area of exploration and most certainly his "proofs" are tied directly to the work of geographers. Third, the article demonstrates research activities in diverse kinds of publications - tasks not unlike those Geographers must pursue. It is hoped you …
Volume 17 Complete Issue, James W. Gallagher
Volume 17 Complete Issue, James W. Gallagher
The Geographical Bulletin
Volume 17 Complete Issue
Francis Drake's Course In The North Pacific, 1579, Kenneth L. Holmes
Francis Drake's Course In The North Pacific, 1579, Kenneth L. Holmes
The Geographical Bulletin
The year 1979 is to be a magical one. We will be reUving the excitement of the passage of a tiny ship called both the Pelican and the Golden Hind (also speJled Golden Hinde) and her dashing commander, Captain Francis Drake, and his crew as they visited the Pacific Coast of North America exactly tour hundred years ago this summer. We are celebrating a cuadricentennial. For over twenty years now it has been the privitege of the writer as a serious historical scholar to seek to iron out the details of the Drake voyage in our part of the globe. …
Cover And Forewords, James W. Gallagher
Volume 16 Complete Issue, James W. Gallagher
Volume 16 Complete Issue, James W. Gallagher
The Geographical Bulletin
Volume 16 Complete Issue
The Influence Of High And Low Pressure Systems On Hurricane Movement As Seen Over North America, Lawrence R. Handley
The Influence Of High And Low Pressure Systems On Hurricane Movement As Seen Over North America, Lawrence R. Handley
The Geographical Bulletin
illustrate one of the many atmospheric controls that influence the trajectories, speed, and intensity of hurricanes. The article developed as an exercise aimed at viewing the impact of welldeveloped high pressure cells on well-developed low pressure systems. The hurricane is used as the model of the well-developed low pressure system, because it is compact, mobile, and well-defined. Thus, the relationships between low pressure and high pressure systems can best be documented, isolated, and studied using hurricanes as the model. It is important that the reader understand that past research has identified many controls affecting the movements and velocities of hurricanes, …
Fiftieth Anniversary Banquet, Thomas Frank Barton
Fiftieth Anniversary Banquet, Thomas Frank Barton
The Geographical Bulletin
Goodness, what a great number of hats this honored guest has worn and continues to wear. To name only a few: Doctor, Professor, Head of a Department, University President, Human Individual, Field Trip Director, Innovator, Counselor and others. Counselor. All may not agree on what is his greatest role in life, but perhaps it is that of counselor. What would be the profession of many of us tonight if there had been no R. G. Buzzard. What might I be in and where might I be if he "A. G." had not befriended me before and after graduating in June …
How Gamma Theta Upsilon Chanced To Originate., Robert Guy Buzzard
How Gamma Theta Upsilon Chanced To Originate., Robert Guy Buzzard
The Geographical Bulletin
When I was a student at The University of Chicago, (I am S.B., 1916; S.M., 1917), and again after service in World War I, Geography and GEOLOGY were housed in Rosenwald Hall, and students of those fields rubbed elbows with each other. Students in GEOLOGY were enjoying the fellowship of a national professional fraternity in "their field". Geography students had no similar association, nor was there the least bit of concern on the part of students or faculty in Geography because of lack of this privilege. In 1924-25 I was a senior fellow in the Graduate School of Geography at …
1928-1978 Fifty Years Of Service To Geography, James Snaden
1928-1978 Fifty Years Of Service To Geography, James Snaden
The Geographical Bulletin
Dr. Robert G. Buzzard conceived the idea of a professional fraternity in the field of geography while he was a student at the University of Chicago just prior to World War I. He dropped the matter when he was unable to find a group of students who could be interested in forming such an organization. During 1924-25, when Dr. Buzzard was a graduate student at Clark University, a local organization which came to be known as the Clark Geographical Society, made up of persons with a graduate degree from Clark, sparked the interest of many geographers. He found only lukewarm …
Editor's Comments, James W. Gallagher
Editor's Comments, James W. Gallagher
The Geographical Bulletin
This is the first issue of The Geographical Bulletin since our 50th "Birthday party." The celebration was held at the Hyatt Regency Hotel in New Orleans as one part of a large program of the annual meeting of the Association of American Geographers. Dr. Alice Rechlin, President of Gamma Theta Upsilon presided at the function. Dr. Melvin Marcus, President of the A.A.G. spoke to us briefly and expressed his genuine good feelings about GTU and the AAG. (Gamma Theta Upsilon has picked up the financial support of the Visiting Scientist Program for the A.A.G. This is the beginning of another …
Cover And Forewords, James W. Gallagher
Volume 15 Complete Issue, James W. Gallagher
Volume 15 Complete Issue, James W. Gallagher
The Geographical Bulletin
Volume 15 Complete Issue
Climatic Preference, Jeffrey T. Lutz
Climatic Preference, Jeffrey T. Lutz
The Geographical Bulletin
Researchers within the discipline of geography seek to achieve an enhanced comprehension of man's perception of the world. Therefore, environmental perception is a subject of great consequence to geographers. Understanding of the sources of environmental variance perception in is essential to an understanding of variation in man's environmental behaviors. 1 The mental image is one of the major determinants of spatial behavior; and spatial images area an individual's cognitive representation of the spatial environment, and are a summary of what he considers meaningful about the environment.' Climate is a strategic factor affecting man's responses to the complex environment, and climate …
The Diffusion Of Transportation Effects In An Urban Network, David Burik
The Diffusion Of Transportation Effects In An Urban Network, David Burik
The Geographical Bulletin
Large urban centers are served by transport networks which consist of a great number of links and nodes. Predicting what the effects of the construction of a proposed link, the abandonment of superfluous elements, or the improvement of existing links will be on the traffic flows over the entire system is currently a timeconsuming and expensive undertaking. It is nevertheless, a necessary step investment appraisal. It is for proper often the case that the amount of available capital will only allow for the completion of a relatively small scale projects. The cost of a full traffic study to assess the …
The Study Of A Service Area, Mary Wegner
The Study Of A Service Area, Mary Wegner
The Geographical Bulletin
Valparaiso, with a population of 20,900 as of 1970, is a city which serves the inhabitants of Porter County in northwest Indiana. The exact variety and combination of its services are not duplicated anywhere else in the world. In addition to the expected municipal functions for a city of its size (e.g. street repair, police and fire protection, mail and newspaper deliveries, shopping, and recreation facilities), Valparaiso also performs functions that other towns in the immediate vicinity do not provide. Examples of such functions include serving as the county seat of Porter County; housing the only Lutheran university in the …
A Geographic Analysis Of Crime Rate In Southwestern Michigan: 1967·1973, James F. Lee
A Geographic Analysis Of Crime Rate In Southwestern Michigan: 1967·1973, James F. Lee
The Geographical Bulletin
In the last five years the study of the spatial dynamics of crime has become an important subfield of the geographic discipline. Numerous, well known studies have appeared, written by geographers and non-geographers alike, dealing with the geography of crime in general or with specific areal units.' While this abundance of research has been fruitful, it has, nonetheless, been haphazard. An attempt to remedy this situation was recently put forward by Phillips, who has identified several well defined research frontiers open to geographers of crime.2 Suggested by Phillips are four areas in which geographers should concentrate their crime research efforts: …
Editor's Comments, James W. Gallagher
Editor's Comments, James W. Gallagher
The Geographical Bulletin
This office does not receive much mail even though there has always been an open Invitation to our readers to comment on the quality of the effort. In general, the comment which does come is favorable. However, the letter on the opposite page arrived recently. All I know is that It was mailed in Silver Springs, Maryland on Dec. 20, 1977 and after reading it I wished the writer a "Merry Christmas." Now, wasn't that gracious? At least it is time to make a few things clear again. Some time ago the Executive Board of Gamma Theta Upsilon agreed that …
Cover And Forewords, James W. Gallagher
Volume 14 Complete Issue, James W. Gallagher
Volume 14 Complete Issue, James W. Gallagher
The Geographical Bulletin
Volume 14 Complete Issue
Perception Of Extremes In The Physical Environment, Jeffrey T. Lutz
Perception Of Extremes In The Physical Environment, Jeffrey T. Lutz
The Geographical Bulletin
In recent years there has been a notable increase in research related to man and his physical environment. literature reflects an heightened interest in man's perception of his environment. Lowenthal has written numerous articles dealing with environmental perception and behavior In different geographic settings.' He feels that much more information Is needed concerning the way people perceive the physical world.