Nik Lomax
Dados Biográficos
| ID | 298694 |
|---|---|
| NOME | Nik Lomax |
| PRENOMES | Nik |
| SOBRENOME | Lomax |
| ASSINATURA | LOMAX N |
| AFILIAÇÕES | University of Leeds |
| ORCID | 0000-0001-9504-7570 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 27 |
| TOTAL DE CITAÇÕES | 67 |
| TOTAL COMO AUTOR | 27 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2013 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 5 |
Calibrating a Global Trade Agent-Based Model with an HPC–ABC–SMC Framework
This study presents a High-Performance Computing and Approximate Bayesian Computation-Sequential Monte Carlo (HPC-ABC-SMC) framework for calibrating complex agent-based models.Applied to a global food trade model, the framework calibrates trade partner and trade volume objectives separately, using precomputed result mapping and task-level parallelisation to achieve up to a 42.1-fold computational efficiency improvement over traditional methods.Un…
Do Welfare Regimes Matter? A Comparative Analysis of Area‐Level Inequalities in Life Expectancy in Germany and the United Kingdom, 2003–2021
While area‐level inequalities in life expectancy are well documented within individual countries, cross‐national comparisons remain rare. We estimated and compared the magnitude of area‐level life expectancy inequalities across districts in the UK and Germany, representing two distinct welfare regimes. We used mortality data from national statistical offices to estimate life expectancy for all districts between 2003 and 2021. Based on employment …
Advancing Spatial Health Inequalities Research
Inequalities in population health outcomes, often captured between or within areas, remain a widespread feature of societies around the world. Many of these inequalities are deeply rooted in structural mechanisms, stemming from long‐standing disparities in the distribution of and access to key resources impacting health. Despite extensive research and policy efforts to reduce these spatial health inequalities, many have proven persistent—and some…
A multilevel analysis of pupils’ travel distance to primary school
Understanding children’s travel distance to school is essential for promoting educational equity and well-being. In China, the hukou (household registration) system, which regulates access to education and other public services by place of official registration, shapes the distribution of educational resources. Yet little research has examined school travel distance in this context or the individual and contextual sources of its variation. This s…
Is Germany experiencing urban or suburban growth? Contrasting long-standing and novel urban gradient classifications
An Inclusive Economy Classification of British Local Authority Districts and Assessment of Its Association With Life Expectancy and Lifespan Variation
Using primarily open‐source data, we curated 13 indicators to consistently capture the concept of the inclusive economy across Local Authority Districts in Great Britain. We used unsupervised k ‐means clustering to identify clusters of similar Local Authority Districts with respect to their economic inclusivity. We identified four distinct clusters of Local Authority Districts, those which are: (1) more economically inclusive; (2) less economical…
Using e-petition data to quantify public concerns during the Covid-19 pandemic
The COVID-19 pandemic has had a profound impact on society and many governments and politicians were required to make quick decisions to protect public health. In reaching these decisions they needed to weigh advice from experts in many fields and then “sell” these decisions. However little was known at the time about the desires and aspirations of their electorates. Here we identify one such source of public opinion, signatures to various COVID-…
Evaluating the influence of taxation and social security policies on psychological distress
An Open‐Source Model for Projecting Small Area Demographic and Land‐Use Change
The size, composition, and spatial distribution of both people and households have a substantial impact on the demand for and development and delivery of infrastructure required to support the population. Infrastructure encompasses a wide range of domains including energy, transport, and water, each of which has its own set of spatial catchments at differing scales. Demographic projections are required to assess potential future demand; however, …
Internal migration
The census of population, conducted by three statistical offices in the United Kingdom, provides a unique resource for measuring and understanding internal migration patterns and propensities. It is the only source that asks an entire population, once every ten years, about their migration behaviour and as such provides a valuable resource for assessing the impact that migration has on the size and composition of local populations. The data are a…
A foresight whole systems obesity classification for the English UK biobank cohort
This paper presents the first study of UK Biobank participants to adopt this obesity system approach to characterising participants. It provides an innovative new approach to better understand the complex drivers of obesity which has the potential to produce meaningful tools for policy makers to better target interventions across the whole system to reduce overweight and obesity
A worlds-eye view of the United Kingdom through parliamentary e-petitions
Gaining an understanding of the concerns and aspirations of a country’s diaspora can help domestic politicians to better connect with this community and gain their support in elections. The United Kingdom’s diaspora is large and spread among many countries, and currently has the right to vote in UK general elections only for a limited time. However, there are proposals to abolish these time limits and this will make this community of increasing i…
On the Use of ‘Glyphmaps’ for Analysing the Scale and Temporal Spread of Covid-19 Reported Cases
Recent analysis of area-level COVID-19 cases data attempts to grapple with a challenge familiar to geovisualization: how to capture the development of the virus, whilst supporting analysis across geographic areas? We present several glyphmap designs for addressing this challenge applied to local authority data in England whereby charts displaying multiple aspects related to the pandemic are given a geographic arrangement. These graphics are visua…
Characterisation of Temporal Patterns in Step Count Behaviour from Smartphone App Data
The increasing ubiquity of smartphone data, with greater spatial and temporal coverage than achieved by traditional study designs, have the potential to provide insight into habitual physical activity patterns. This study implements and evaluates the utility of both K-means clustering and agglomerative hierarchical clustering methods in identifying weekly and yearlong physical activity behaviour trends. Characterising the demographics and choice …
Defining distance thresholds for migration research
There exists a large body of research focused on migration distance, where migration is either the outcome of interest or used as an input variable to model something else. However, there is little consistency in the distance thresholds used: these are often arbitrary, based on administrative boundaries or constrained by definitions available in the dataset. This causes problems with comparison across studies, and in some cases where migration di…
A dynamic microsimulation model for epidemics
Socio-demographic determinants of physical activity and app usage from smartphone data
The increasing ubiquity of smartphones provides a potential new data source to capture physical activity behaviours. Though not designed as a research tool, these secondary data have the potential to capture a large population over a more extensive spatial area and with longer temporality than current methods afford. This paper uses one such secondary data source from a commercial app designed to incentivise activity. We explore the new insights …
Linguistic and semantic factors in government e-petitions
Many legislators around the word are offering the use of web based e-petitioning platforms to allow their electorate to influence government policy and action. A popular e-petition can gain much coverage, both in traditional media and social media. The task then becomes how to understand what features may make an e-petition popular and hence, potentially influential. One area of investigation is the linguistic and topical content of the supportin…
Rent/price ratio for English housing sub‐markets using matched sales and rental data
The ratio between the rental and sales values of residential properties are a much studied statistic in the field of real estate economics. When these values do not keep pace with each other, and in particular when the ratio is low, some commentators take this as an indication that there may be a housing bubble building. The ratios are also of interest to potential property investors. These ratios are commonly computed on aggregate statistics der…
The impacts of international migration on the UK's ethnic populations
The United Kingdom faces demographic uncertainty, as negotiations for leaving the European Union (Brexit) proceed. Brexit has implications for international migration into and out of the UK, dependent on future immigration policy and on how attractive the UK will be as a labour market. At the same time, the UK population is experiencing ethnic diversification, consequent on past immigration. To explore the UK's future ethnic diversity, we run fou…
Ravenstein Revisited
In 1876, 1885 and 1889, Ernst Ravenstein, an Anglo-German geographer, published papers on internal and international migration in Britain, Europe and North America. He generalized his findings as 'laws of migration', which have informed subsequent migration research. This paper aims to compare Ravenstein's approach to investigating migration with how researchers have studied the phenomenon more recently. Ravenstein used lifetime migrant tables fo…
Variations in migration motives over distance
It is often assumed that long-distance migration is dominated by employment or educationally led motives and that local-scale mobility is linked to family and housing adjustments. Unfortunately, few empirical studies examining the relationship between moti
Ethnic internal migration
Internal migration is one of the main drivers of local population change and therefore an important factor to consider in the provision of services across key domains such as housing, health and education. In recent years, the population of England and Wales has become increasingly ethnically diverse, with groups varying in age structure and time spent in the UK (whether at the group or individual level). However, relatively little is known about…
Is adolescent body mass index and waist circumference associated with the food environments surrounding schools and homes? A longitudinal analysis
Our study found little consistent evidence of an association between features of the food environment and adolescent weight status. It suggests that policy efforts focusing on the food environment may have a limited effect at tackling the high prevalence of obesity if not supported by additional strategies
Estimating the outcome of UKs referendum on EU membership using e-petition data and machine learning algorithms
The United Kingdom’s 2016 referendum on membership of the European Union is perhaps one of the most important recent electoral events in the UK. This political sentiment has confounded pollsters, media commentators and academics alike, and has challenged elected Members of the Westminster Parliament. Unfortunately, for many areas of the UK this referendum outcome is not known for Westminster Parliamentary Constituencies, rather it is known for th…
Variations in migration motives over distance
It is often assumed that long-distance migration is dominated by employment or educationally led motives and that local-scale mobility is linked to family and housing adjustments. Unfortunately, few empirical studies examining the relationship between moti
The impacts of international migration on the UK's ethnic populations
The United Kingdom faces demographic uncertainty, as negotiations for leaving the European Union (Brexit) proceed. Brexit has implications for international migration into and out of the UK, dependent on future immigration policy and on how attractive the UK will be as a labour market. At the same time, the UK population is experiencing ethnic diversification, consequent on past immigration. To explore the UK's future ethnic diversity, we run fou…
Ethnic internal migration
Internal migration is one of the main drivers of local population change and therefore an important factor to consider in the provision of services across key domains such as housing, health and education. In recent years, the population of England and Wales has become increasingly ethnically diverse, with groups varying in age structure and time spent in the UK (whether at the group or individual level). However, relatively little is known about…
Defining distance thresholds for migration research
There exists a large body of research focused on migration distance, where migration is either the outcome of interest or used as an input variable to model something else. However, there is little consistency in the distance thresholds used: these are often arbitrary, based on administrative boundaries or constrained by definitions available in the dataset. This causes problems with comparison across studies, and in some cases where migration di…
Subnational migration in the United Kingdom
There is no single framework in place in the United Kingdom for collating and harmonizing the data on migration taking place between the subnational administrative units that constitute the home nations, together with the flows of international migration between these areas and the ‘rest of the world’. This paper proposes the construction of complete matrices of subnational migration statistics on an annual basis which can then be used to monitor…
A dynamic microsimulation model for epidemics
Linguistic and semantic factors in government e-petitions
Many legislators around the word are offering the use of web based e-petitioning platforms to allow their electorate to influence government policy and action. A popular e-petition can gain much coverage, both in traditional media and social media. The task then becomes how to understand what features may make an e-petition popular and hence, potentially influential. One area of investigation is the linguistic and topical content of the supportin…
Ravenstein Revisited
In 1876, 1885 and 1889, Ernst Ravenstein, an Anglo-German geographer, published papers on internal and international migration in Britain, Europe and North America. He generalized his findings as 'laws of migration', which have informed subsequent migration research. This paper aims to compare Ravenstein's approach to investigating migration with how researchers have studied the phenomenon more recently. Ravenstein used lifetime migrant tables fo…
Evaluating the influence of taxation and social security policies on psychological distress
Equitable or elitist? The social impact of the 2014 Tour de France Grand Départ
The Tour de France Grand Départ came to the UK in July 2014. It was heralded as a great success, drawing in an estimated 3.5 million visitors and generating over £128 million for the local economy, but there has been little research on assessing the geodemographics of who attended this event – did it reach out to all sections of society as hoped, or was it contained to the ‘typical’ cycling spectator? Using previously unpublished data, this resea…
A worlds-eye view of the United Kingdom through parliamentary e-petitions
Gaining an understanding of the concerns and aspirations of a country’s diaspora can help domestic politicians to better connect with this community and gain their support in elections. The United Kingdom’s diaspora is large and spread among many countries, and currently has the right to vote in UK general elections only for a limited time. However, there are proposals to abolish these time limits and this will make this community of increasing i…
Subnational migration in the United Kingdom
There is no single framework in place in the United Kingdom for collating and harmonizing the data on migration taking place between the subnational administrative units that constitute the home nations, together with the flows of international migration between these areas and the ‘rest of the world’. This paper proposes the construction of complete matrices of subnational migration statistics on an annual basis which can then be used to monitor…
Equitable or elitist? The social impact of the 2014 Tour de France Grand Départ
The Tour de France Grand Départ came to the UK in July 2014. It was heralded as a great success, drawing in an estimated 3.5 million visitors and generating over £128 million for the local economy, but there has been little research on assessing the geodemographics of who attended this event – did it reach out to all sections of society as hoped, or was it contained to the ‘typical’ cycling spectator? Using previously unpublished data, this resea…
Is adolescent body mass index and waist circumference associated with the food environments surrounding schools and homes? A longitudinal analysis
Our study found little consistent evidence of an association between features of the food environment and adolescent weight status. It suggests that policy efforts focusing on the food environment may have a limited effect at tackling the high prevalence of obesity if not supported by additional strategies
Estimating the outcome of UKs referendum on EU membership using e-petition data and machine learning algorithms
The United Kingdom’s 2016 referendum on membership of the European Union is perhaps one of the most important recent electoral events in the UK. This political sentiment has confounded pollsters, media commentators and academics alike, and has challenged elected Members of the Westminster Parliament. Unfortunately, for many areas of the UK this referendum outcome is not known for Westminster Parliamentary Constituencies, rather it is known for th…
Variations in migration motives over distance
It is often assumed that long-distance migration is dominated by employment or educationally led motives and that local-scale mobility is linked to family and housing adjustments. Unfortunately, few empirical studies examining the relationship between moti
Ethnic internal migration
Internal migration is one of the main drivers of local population change and therefore an important factor to consider in the provision of services across key domains such as housing, health and education. In recent years, the population of England and Wales has become increasingly ethnically diverse, with groups varying in age structure and time spent in the UK (whether at the group or individual level). However, relatively little is known about…
Linguistic and semantic factors in government e-petitions
Many legislators around the word are offering the use of web based e-petitioning platforms to allow their electorate to influence government policy and action. A popular e-petition can gain much coverage, both in traditional media and social media. The task then becomes how to understand what features may make an e-petition popular and hence, potentially influential. One area of investigation is the linguistic and topical content of the supportin…
Rent/price ratio for English housing sub‐markets using matched sales and rental data
The ratio between the rental and sales values of residential properties are a much studied statistic in the field of real estate economics. When these values do not keep pace with each other, and in particular when the ratio is low, some commentators take this as an indication that there may be a housing bubble building. The ratios are also of interest to potential property investors. These ratios are commonly computed on aggregate statistics der…
The impacts of international migration on the UK's ethnic populations
The United Kingdom faces demographic uncertainty, as negotiations for leaving the European Union (Brexit) proceed. Brexit has implications for international migration into and out of the UK, dependent on future immigration policy and on how attractive the UK will be as a labour market. At the same time, the UK population is experiencing ethnic diversification, consequent on past immigration. To explore the UK's future ethnic diversity, we run fou…
Ravenstein Revisited
In 1876, 1885 and 1889, Ernst Ravenstein, an Anglo-German geographer, published papers on internal and international migration in Britain, Europe and North America. He generalized his findings as 'laws of migration', which have informed subsequent migration research. This paper aims to compare Ravenstein's approach to investigating migration with how researchers have studied the phenomenon more recently. Ravenstein used lifetime migrant tables fo…
On the Use of ‘Glyphmaps’ for Analysing the Scale and Temporal Spread of Covid-19 Reported Cases
Recent analysis of area-level COVID-19 cases data attempts to grapple with a challenge familiar to geovisualization: how to capture the development of the virus, whilst supporting analysis across geographic areas? We present several glyphmap designs for addressing this challenge applied to local authority data in England whereby charts displaying multiple aspects related to the pandemic are given a geographic arrangement. These graphics are visua…
Characterisation of Temporal Patterns in Step Count Behaviour from Smartphone App Data
The increasing ubiquity of smartphone data, with greater spatial and temporal coverage than achieved by traditional study designs, have the potential to provide insight into habitual physical activity patterns. This study implements and evaluates the utility of both K-means clustering and agglomerative hierarchical clustering methods in identifying weekly and yearlong physical activity behaviour trends. Characterising the demographics and choice …
Defining distance thresholds for migration research
There exists a large body of research focused on migration distance, where migration is either the outcome of interest or used as an input variable to model something else. However, there is little consistency in the distance thresholds used: these are often arbitrary, based on administrative boundaries or constrained by definitions available in the dataset. This causes problems with comparison across studies, and in some cases where migration di…
A dynamic microsimulation model for epidemics
Socio-demographic determinants of physical activity and app usage from smartphone data
The increasing ubiquity of smartphones provides a potential new data source to capture physical activity behaviours. Though not designed as a research tool, these secondary data have the potential to capture a large population over a more extensive spatial area and with longer temporality than current methods afford. This paper uses one such secondary data source from a commercial app designed to incentivise activity. We explore the new insights …
An Open‐Source Model for Projecting Small Area Demographic and Land‐Use Change
The size, composition, and spatial distribution of both people and households have a substantial impact on the demand for and development and delivery of infrastructure required to support the population. Infrastructure encompasses a wide range of domains including energy, transport, and water, each of which has its own set of spatial catchments at differing scales. Demographic projections are required to assess potential future demand; however, …
Internal migration
The census of population, conducted by three statistical offices in the United Kingdom, provides a unique resource for measuring and understanding internal migration patterns and propensities. It is the only source that asks an entire population, once every ten years, about their migration behaviour and as such provides a valuable resource for assessing the impact that migration has on the size and composition of local populations. The data are a…
A foresight whole systems obesity classification for the English UK biobank cohort
This paper presents the first study of UK Biobank participants to adopt this obesity system approach to characterising participants. It provides an innovative new approach to better understand the complex drivers of obesity which has the potential to produce meaningful tools for policy makers to better target interventions across the whole system to reduce overweight and obesity
A worlds-eye view of the United Kingdom through parliamentary e-petitions
Gaining an understanding of the concerns and aspirations of a country’s diaspora can help domestic politicians to better connect with this community and gain their support in elections. The United Kingdom’s diaspora is large and spread among many countries, and currently has the right to vote in UK general elections only for a limited time. However, there are proposals to abolish these time limits and this will make this community of increasing i…
Using e-petition data to quantify public concerns during the Covid-19 pandemic
The COVID-19 pandemic has had a profound impact on society and many governments and politicians were required to make quick decisions to protect public health. In reaching these decisions they needed to weigh advice from experts in many fields and then “sell” these decisions. However little was known at the time about the desires and aspirations of their electorates. Here we identify one such source of public opinion, signatures to various COVID-…
Evaluating the influence of taxation and social security policies on psychological distress
Is Germany experiencing urban or suburban growth? Contrasting long-standing and novel urban gradient classifications
An Inclusive Economy Classification of British Local Authority Districts and Assessment of Its Association With Life Expectancy and Lifespan Variation
Using primarily open‐source data, we curated 13 indicators to consistently capture the concept of the inclusive economy across Local Authority Districts in Great Britain. We used unsupervised k ‐means clustering to identify clusters of similar Local Authority Districts with respect to their economic inclusivity. We identified four distinct clusters of Local Authority Districts, those which are: (1) more economically inclusive; (2) less economical…
Calibrating a Global Trade Agent-Based Model with an HPC–ABC–SMC Framework
This study presents a High-Performance Computing and Approximate Bayesian Computation-Sequential Monte Carlo (HPC-ABC-SMC) framework for calibrating complex agent-based models.Applied to a global food trade model, the framework calibrates trade partner and trade volume objectives separately, using precomputed result mapping and task-level parallelisation to achieve up to a 42.1-fold computational efficiency improvement over traditional methods.Un…
Do Welfare Regimes Matter? A Comparative Analysis of Area‐Level Inequalities in Life Expectancy in Germany and the United Kingdom, 2003–2021
While area‐level inequalities in life expectancy are well documented within individual countries, cross‐national comparisons remain rare. We estimated and compared the magnitude of area‐level life expectancy inequalities across districts in the UK and Germany, representing two distinct welfare regimes. We used mortality data from national statistical offices to estimate life expectancy for all districts between 2003 and 2021. Based on employment …
Geography (12 obras) · Economics (11 obras) · Population (11 obras) · Computer Science (10 obras) · Sociology (10 obras) · Demography (9 obras) · Political science (8 obras) · Demography (7 obras) · Urban Transport and Accessibility (7 obras) · Demographic economics (6 obras)