{"title":"Impacts of improved transport on regional market access","authors":"M.E. O'Kelly","doi":"10.1111/gean.12413","DOIUrl":"https://doi.org/10.1111/gean.12413","url":null,"abstract":"This article presents a pedagogic review and explanation of a core idea in location theory. Central to the analysis is the von Thünen model, a cornerstone of agricultural land use theory. The model is adapted to non‐uniform transport surfaces, enabling an exploration of how improved transport corridors, such as roads and canals, alter economic landscapes. The article explores the influence of enhanced transport corridors within agricultural growing regions and provides a conceptual framework for understanding the impacts of improved transport infrastructure. By examining incremental changes of varying effectiveness, we shed light on the multifaceted effects of these corridors. Using a spatial‐price equilibrium model, findings reveal and quantify how these improvements contribute to increased supply, price moderation, and cost reduction. Networks that provide full connectivity with large reductions in transport cost have the greatest effect, as might be expected, but there are subtle spatial zones displaying differential impacts.","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"97 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Testing Hypotheses When You Have More Than a Few*","authors":"Peter A. Rogerson","doi":"10.1111/gean.12412","DOIUrl":"https://doi.org/10.1111/gean.12412","url":null,"abstract":"A common issue faced by spatial analysts is that of multiple testing. When hypotheses are tested at multiple points in time or space, care must often be taken to avoid results containing too many false positives. There are many ways to address this outcome, and these are reviewed in this article. We begin with a review of some of the basic, longstanding approaches to multiple testing. This is followed by a summary of the more recent objective of controlling the false discovery rate and the effects of spatial autocorrelation on it. The number of true null hypotheses is an important quantity, and some approaches to its estimation are reviewed. In the literature on spatial analysis, there have been several newer approaches to multiple testing, and these are also reviewed. These include some recent methods outside of the literature in geography, but they have potential applicability for many of the problems addressed by geographers, especially since they focus upon the discovery of clusters. The article includes an illustration and closes with some ideas for taking further steps in treating multiple hypotheses in the context of methods commonly used in geographical analysis.","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"8 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Beyond Auto‐Models: Self‐Correlated Sui‐Model Respecifications","authors":"Daniel A. Griffith","doi":"10.1111/gean.12411","DOIUrl":"https://doi.org/10.1111/gean.12411","url":null,"abstract":"This year is the 50th anniversary of Besag's classic auto‐models publication, a cornerstone in the development of modern‐day spatial statistics/econometrics. Besag struggled for nearly two decades to make his conceptualization collectively successful across a wide suite of random variables. But only his auto‐normal, and to a lesser degree his auto‐logistic/binomial, were workable. Others, like his auto‐Poisson, were effectively failures, whereas still others, such as potentials like an auto‐Weibull, defied even awkward mathematical incorporations of spatial lag terms. Besag circumvented this impediment by introducing an auto‐normal random effects components (within a Bayesian estimation context), building upon his single total success. This article describes an alternative approach, partly paralleling his reformulation while avoiding inserting spatial lag terms directly into probability density/mass functions, implanting spatial autocorrelation into cumulative distributions functions (CDFs), instead, via a spatially autocorrelated uniform distribution. The already existing probability integral transform and quantile function mathematical statistics theorems enable this mechanism to spatialize any random variable, with these new ones labeled sui‐models.","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"8 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Multiple Gradual Maximal Covering Location Problem","authors":"Ashleigh N. Price, Kevin M. Curtin","doi":"10.1111/gean.12410","DOIUrl":"https://doi.org/10.1111/gean.12410","url":null,"abstract":"This article describes a new spatial optimization model, the Multiple Gradual Maximal Covering Location Problem (MG‐MCLP). This model is useful when coverage from multiple facilities or sensors is necessary to consider a demand to be covered, and when the quality of that coverage varies with the number of located facilities within the service distance, and the distance from the demand itself. The motivating example for this model uses a coupled GIS and optimization framework to determine the optimal locations for acoustic sensors—typically used in police applications for gunshot detection—in Tuscaloosa, AL. The results identify the optimal facility locations for allocating multiple facilities, at different locations, to cover multiple demands and evaluate those optimal locations with distance‐decay. Solving the MG‐MCLP over a range of values allows for comparing the performance of varying numbers of available resources, which could be used by public safety operations to demonstrate the number of resources that would be required to meet policy goals. The results illustrate the flexibility in designing alternative spatial allocation strategies and provide a tractable covering model that is solved with standard linear programming and GIS software, which in turn can improve spatial data analysis across many operational contexts.","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"14 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correction to “A hybrid approach for mass valuation of residential properties through geographic information systems and machine learning integration”","authors":"","doi":"10.1111/gean.12409","DOIUrl":"10.1111/gean.12409","url":null,"abstract":"<p>Mete, M. O., & Yomralioglu, T. (2023) A hybrid approach for mass valuation of residential properties through geographic information systems and machine learning integration. <i>Geographical Analysis</i>, 55(4), 535–559.</p><p>The funding statement for this article was missing. The below funding statement has been added to the article:</p><p>“Funding for the research project was received from Scientific Research Projects Coordination Unit of Istanbul Technical University under grant MDK-2021-43080.”</p><p>We apologize for this error.</p>","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"56 4","pages":"825"},"PeriodicalIF":3.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gean.12409","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Plausible Reasoning and Spatial‐Statistical Theory: A Critique of Recent Writings on “Spatial Confounding”","authors":"Connor Donegan","doi":"10.1111/gean.12408","DOIUrl":"https://doi.org/10.1111/gean.12408","url":null,"abstract":"Statistical research on correlation with spatial data dates at least to Student's (W. S. Gosset's) 1914 paper on “the elimination of spurious correlation due to position in time and space.” Since 1968, much of this work has been organized around the concept of spatial autocorrelation (SA). A growing statistical literature is now organized around the concept of “spatial confounding” (SC) but is estranged from, and often at odds with, the SA literature and its history. The SC literature is producing new, sometimes flawed, statistical techniques such as Restricted Spatial Regression (RSR). This article brings the SC literature into conversation with the SA literature and provides a theoretically grounded review of the history of research on correlation with spatial data, explaining some of its implications for the the SC literature. The article builds upon principles of plausible inference to synthesize a guiding theoretical thread that runs throughout the SA literature. This leads to a concise theoretical critique of RSR and a clarification of the logic behind standard spatial‐statistical models.","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"16 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Feasibility of Using Survey Data and Semi‐variogram Kriging to Obtain Bespoke Indices of Neighborhood Characteristics: A Simulation and a Case Study","authors":"Emily Finne, Odile Sauzet","doi":"10.1111/gean.12401","DOIUrl":"https://doi.org/10.1111/gean.12401","url":null,"abstract":"<jats:italic>Data on neighborhood characteristics are not typically collected in epidemiological studies. They are however useful, for example, in the study of small‐area health inequalities and may be available in social surveys. We propose to use kriging based on semi‐variogram models to predict values at nonobserved locations with the aim of obtaining indicators of neighborhood characteristics of epidemiological study participants. The spatial data available for kriging is usually sparse at small distance and therefore we perform a simulation study to assess the feasibility and usability of the method as well as a case study using data from the RECORD study. Apart from having enough observed data at small distances to the non‐observed locations, a good fitting semi‐variogram, a larger range and the absence of nugget effects for the semi‐variogram models are factors leading to a higher reliability. Recommendations on the required number of observations within the neighborhood range are given.</jats:italic>","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"11 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Uncovering Representation Bias in Large-scale Cellular Phone-based Data: A Case Study in North Carolina","authors":"Hanna V. Jardel, Paul L. Delamater","doi":"10.1111/gean.12399","DOIUrl":"10.1111/gean.12399","url":null,"abstract":"<p>Large cellular phone-based mobility datasets are an important new data source for research on human movement. We investigate and illustrate bias in representation in a large mobility data set at the census block group, tract, and county levels. We paired American Community Survey (ACS) 2019 data with SafeGraph (SG) cell phone mobility data to elucidate potential bias in SG data by examining ACS estimated population against the number of devices in the SG data, stratifying by key sociodemographic variables such as income, percent Black population, percent of population over 55 years, percent of population 18–65 years, percent of people living in crowded living conditions, and urbanization level. We evaluated whether the bias varied over time by examining a 10-month period. This bias changes with key demographic characteristics and changes over time. Specifically, we see underrepresentation in areas that have the highest percentage of Black population at all aggregation levels. We also see underrepresentation at all levels in areas with the highest percentage of working age residents as well as areas with the lowest median incomes. Researchers should be cautious when using mobility datasets because of bias differential on key sociodemographic factors and collection time.</p>","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"56 4","pages":"723-745"},"PeriodicalIF":3.3,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ane Rahbek Vierø, Anastassia Vybornova, Michael Szell
{"title":"How Good Is Open Bicycle Network Data? A Countrywide Case Study of Denmark","authors":"Ane Rahbek Vierø, Anastassia Vybornova, Michael Szell","doi":"10.1111/gean.12400","DOIUrl":"https://doi.org/10.1111/gean.12400","url":null,"abstract":"Cycling is a key ingredient for a sustainability shift of Denmark's transportation system. To increase cycling rates, better bicycle infrastructure networks are required. Planning such networks requires high‐quality infrastructure data, yet the quality of bicycle infrastructure data is understudied. Here, we compare the two largest open data sets on dedicated bicycle infrastructure in Denmark, OpenStreetMap (OSM) and GeoDanmark, in a countrywide data quality assessment, asking whether the data are good enough for network‐based analysis of cycling conditions. We find that neither of the data sets is of sufficient quality, and that data conflation is necessary to obtain a more complete data set. Our analysis of the spatial variation of data quality suggests that rural areas are more prone to incomplete data. We demonstrate that the prevalent method of using infrastructure density as a proxy for data completeness is not suitable for bicycle infrastructure data, and that matching of corresponding features is thus necessary to assess data completeness. Based on our data quality assessment, we recommend strategic mapping efforts toward data completeness, consistent standards to support comparability between different data sources, and increased focus on data topology to ensure high‐quality bicycle network data.","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ouidad Benhlima, Fouad Riane, Jakob Puchinger, Hicham Bahi
{"title":"Development of a Variable Multimodal Balanced Floating Catchment Area Approach for Spatial Accessibility Assessment","authors":"Ouidad Benhlima, Fouad Riane, Jakob Puchinger, Hicham Bahi","doi":"10.1111/gean.12398","DOIUrl":"10.1111/gean.12398","url":null,"abstract":"<p>Rapid urbanization and expansion, stemming from demographic growth and migration from rural areas to urban centers, have heavily strained cities in recent years. These circumstances have created an ever-growing need for equipment and essential services. On the other hand, previous research has shown that accessibility measurement is a powerful technique for assessing urban compactness. This assessment arises from the willingness of urban planners to develop transport services and land use across various cities globally. This paper addresses the computational problem of spatial accessibility, focusing on the influence of private cars versus public transport. We introduced a metric that enhances the Balanced Floating Catchment Area (BFCA) index. Our metric not only considers multiple transportation modes in the calculation of spatial accessibility but also takes into account variable catchment sizes. We applied our metric in a case study examining spatial accessibility to public hospitals in Casablanca. The results provide a geographic breakdown of each transportation mode, and the accessibility of different scenarios has been compared.</p>","PeriodicalId":12533,"journal":{"name":"Geographical Analysis","volume":"56 4","pages":"678-699"},"PeriodicalIF":3.3,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140590784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}