Levi John Wolf
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View article: Dissecting the effect of long-term exposure to air pollution on risk of dementia in UK Biobank
Dissecting the effect of long-term exposure to air pollution on risk of dementia in UK Biobank Open
Mounting evidence links air pollution to dementia, the most prevalent cause of cognitive impairment in older people. Here we investigated individual and compound effects of particulate matters (PM 10 , PM 2.5 , PM coarse , PM abs ) and nit…
View article: Not so ‘placeless’ after all. Understanding the spatial implications of the digital economy
Not so ‘placeless’ after all. Understanding the spatial implications of the digital economy Open
Empirical studies on the geography of digital economic activities are currently lacking. This is due to digital economic activities remaining largely undefined in official economic statistics. This paper introduces a novel empirical pipeli…
View article: A diverse community constitutes global coccolithophore calcium carbonate stocks
A diverse community constitutes global coccolithophore calcium carbonate stocks Open
Coccolithophores are key marine plankton contributing to the global ocean carbon cycle through calcium carbonate production. Most studies focus on Gephyrocapsa huxleyi , a globally abundant but lightly calcified species, potentially misrep…
View article: Fast and furious: the productivity effects of the geography of experienced internet speeds
Fast and furious: the productivity effects of the geography of experienced internet speeds Open
The discussion about the productivity gains from digital technologies is almost as old as digital technologies themselves. From early futuristic approaches to the various forms of the productivity paradox, there are still open questions re…
View article: Dissecting the effect of long-term exposure to air pollution on risk of dementia in UK Biobank
Dissecting the effect of long-term exposure to air pollution on risk of dementia in UK Biobank Open
Mounting evidence links air pollution to dementia, the most prevalent cause of cognitive impairment in older people. Here we investigated individual and compound effects of particulate matters (PM 10 , PM 2.5 , PM coarse , PM abs ) and nit…
View article: Fast and furious: the productivity effects of the geography of experienced internet speeds
Fast and furious: the productivity effects of the geography of experienced internet speeds Open
The discussion about the productivity gains from digital technologies is almost as old as digital technologies themselves. From early futuristic approaches to the various forms of the productivity paradox, there are still open questions re…
View article: Introduction to A Research Agenda for Spatial Analysis
Introduction to A Research Agenda for Spatial Analysis Open
This chapter introduces the rationale for the book, sets out what, as editors, we hope to achieve by its publication and outlines how we hope you, as reader, might participate in an ongoing conversation beyond the final page of our "conclu…
View article: Confounded Local Inference: Extending Local Moran Statistics to Handle Confounding
Confounded Local Inference: Extending Local Moran Statistics to Handle Confounding Open
Local statistical analysis has long been of interest to social and environmental scientists who analyze geographic data. Research into local spatial statistics experienced a step-change in the mid-1990s, which provided a large class of loc…
View article: Rethinking ‘causality’ in quantitative human geography
Rethinking ‘causality’ in quantitative human geography Open
Causality is at the core of much contemporary discussion in social sciences, philosophy, and computer science—from the establishment of basic definitions of causality to developing methods for causal inference, this discussion is increasin…
View article: A spatial-demographic analysis of Africa’s emerging urban geography
A spatial-demographic analysis of Africa’s emerging urban geography Open
We examine Africa’s emerging urban geography from a demographic perspective and discuss implications for development policy. We adopt an approach that defines urbanisation purely in spatial-demographic terms in recognition of the decouplin…
View article: Rethinking "causality" in Quantitative Human Geography
Rethinking "causality" in Quantitative Human Geography Open
Causality is at the core of much contemporary discussion in social sciences, philosophy, and computer science—from the establishment of basic definitions of causality to developing methods for causal inference, this discussion is increasin…
View article: Developing capacitated <i>p</i>-median location-allocation model in the spopt library to allow UCL student teacher placements using public transport
Developing capacitated <i>p</i>-median location-allocation model in the spopt library to allow UCL student teacher placements using public transport Open
Location-allocation is a key tool within the GIS and network analysis toolbox. In this paper we discuss the real world application of a location-allocation case study (approx 800 students, 500 schools) from UCL using public transport. The …
View article: Occupational segregation in the digital economy? A Natural Language Processing approach using UK Web Data
Occupational segregation in the digital economy? A Natural Language Processing approach using UK Web Data Open
This paper investigates whether and how occupational segregation affects the digital economy. Despite the continuous growth of entrepreneurial activity in the digital, little is known about the demographic characteristics of people activel…
View article: High-resolution rural poverty mapping in Pakistan with ensemble deep learning
High-resolution rural poverty mapping in Pakistan with ensemble deep learning Open
High resolution poverty mapping supports evidence-based policy and research, yet about half of all countries lack the survey data needed to generate useful poverty maps. To overcome this challenge, new non-traditional data sources and deep…
View article: Measuring a country’s digital industrial structure: commercial websites and weakly supervised classification to the rescue
Measuring a country’s digital industrial structure: commercial websites and weakly supervised classification to the rescue Open
In this paper we propose the use of commercial websites and a contextualized weak supervision framework as an alternative to industrial taxonomies to identify and classify digital industrial activity. Despite the crucial importance of indu…
View article: Data for poverty mapping in Pakistan with ensemble deep learning
Data for poverty mapping in Pakistan with ensemble deep learning Open
This contains data and scripts used in the paper entitled "High resolution mapping of rural poverty in Pakistan with ensemble deep learning". The "README.me" file provides additional information about the scripts and underlying data.
View article: Confounded Local Inference: Extending Local Moran Statistics to Handle Confounding
Confounded Local Inference: Extending Local Moran Statistics to Handle Confounding Open
Local geographic statistical analysis has long been of interest to scientists. In many cases, local statistics have been developed to identify spatial outliers --- areas that are markedly dissimilar from their surroundings --- or spatial c…
View article: What makes a place urban?
What makes a place urban? Open
We argue that “urbanity” is a function of population concentration. Empirically, this means urbanity can be measured along a spectrum, with increased population concentration in a place denoting increased urbanity. Phenomenologically, larg…
View article: Market access and dietary diversity: A spatially explicit multi-level analysis in Southern and Western Kenya
Market access and dietary diversity: A spatially explicit multi-level analysis in Southern and Western Kenya Open
The risk of malnutrition, particularly micronutrient deficiency, is high in large parts of Sub-Saharan Africa for smallholder farmers. Access to diverse and nutritious food is a key component of food security, and a major development objec…
View article: spopt: a python package for solving spatialoptimization problems in PySAL
spopt: a python package for solving spatialoptimization problems in PySAL Open
Spatial optimization is a major spatial analytical tool in management and planning, the significance of which cannot be overstated. Spatial optimization models play an important role in designing and managing effective and efficient servic…
View article: A scoping review on the multiplicity of scale in spatial analysis
A scoping review on the multiplicity of scale in spatial analysis Open
Scale is a central concept in the geographical sciences and is an intrinsic property of many spatial systems. It also serves as an essential thread in the fabric of many other physical and social sciences, which has contributed to the use …
View article: The Right to Rule by Thumb: A Comment on Epistemology in "A Route Map for Successful Applications of Geographically-Weighted Regression"
The Right to Rule by Thumb: A Comment on Epistemology in "A Route Map for Successful Applications of Geographically-Weighted Regression" Open
Comber et al. (2022) provides an important contribution to the future of quantitative geography and geographic analysis. The contribution is chiefly in their development of a "GWR Route Map," a diagram showing the sequence of analytical st…
View article: Much ado about null things: A small replication crisis
Much ado about null things: A small replication crisis Open
Replication is a big concern in contemporary science. At its core, replicable research can be repeated in different contexts, possibly using different tools, to obtain similar results. In geography, a recent replication study found a huge …
View article: A Scoping Review on the Multiplicity of Scale in Spatial Analysis
A Scoping Review on the Multiplicity of Scale in Spatial Analysis Open
Scale is a central concept in the geographical sciences and is an intrinsic property of many spatial systems. It also serves as an essential thread in the fabric of many other physical and social sciences, which has contributed to the use …