R W Thomas
Biographic Data
| ID | 3718690 |
|---|---|
| NAME | R W Thomas |
| GIVEN NAMES | R W |
| FAMILY NAME | Thomas |
| SIGNATURE | THOMAS R W |
| AFFILIATIONS | University of Manchester |
| VERIFIED | No |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 45 |
| AUTHOR COUNT | 17 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1975 |
| LATEST PUBLICATION YEAR | 1996 |
| H-INDEX | 3 |
Controlling HIV/Aids in Ireland: The Implications for Health Policy of Some Epidemic Forecasts
This paper is set within the context of growing opiate use, and in it we develop and apply a modelling framework that is designed to forecast HIV prevalences and AIDS incidences that are consistent with various control scenarios related to the medium-term behaviour of the epidemic in Ireland. This task involves, first, fitting a process-based HIV model to AIDS incidence series for both Ireland and the United Kingdom to estimate national variation…
Forecasting Global HIV-Aids Dynamics: Modelling Strategies and Preliminary Simulations
In the light of the considerable biomathematical effort devoted to building models of the incidence of HIV and AIDS in communities, in this paper a multiregion specification is developed that includes a parsimonious cross-infection mechanism where high-risk and low-risk populations are distinguished by their promiscuity rates. The nature of this mixing is compared with some existing modelling formats, and some preliminary simulations are presente…
Quantitative methods: Relaxing the constraints
The last article I wrote in this series was set close to the discussion (Batty et al., 1991) of Wilson’s (1967) citation classic, ’A statistical theory of spatial distribution models’. Upon delving into these commentaries, I was struck by the contrast between their guarded stance and the effusive tones Gould (1972) adopted to sell the entropy model to geographers at
Space-Time Interactions in Multiregion Disease Modelling
In this paper, some methods for representing space and time consistently within a deterministic version of the recurrent epidemic model are examined. First, a general framework for transforming a model for a single community into a multiregion counterpart where the frequency of contact between susceptibles and infectives is some inverse function of distance is described. Different spatial interaction representations of the accessibility of the re…
Quantitative methods: Clines, hot spots and cancer clusters
Quantitative methods: Input-output analysis as macroeconomic geography
An analysis of psychiatric patient attributes in Salford using categorical data models
Carrier models for the simulation of Hodgkin's disease: A review with some extensions
Stochastic Carrier Models for the Simulation of Hodgkin's Disease in a System of Regions
In this paper I build on earlier work, which entailed the construction of a deterministic carrier model to simulate the incidence of Hodgkin's disease. This model is developed into an operational stochastic form, which is tested on the monthly incidence of Hodgkin's disease in Greater Manchester, 1962 to 1976. A further refinement is the transformation of this model into a multiregion model, which makes use of gravity interactions in order to sim…
Developments in Mathematical Programming Models and Their Impact on the Spatial Allocation of Educational Resources
A Single-Region Carrier Model for the Simulation of Hodgkin's Disease Applied to its Incidence in Greater Manchester, 1962-1976
Epidemiologists have found a good deal of anecdotal and statistical evidence to suggest that Hodgkin's disease may be an infectious entity. In this paper a deterministic carrier model is developed in the light of these findings and, in particular, the equilibrium behaviour of the model is explored under various assumptions about the incidence of the disease in Greater Manchester, 1962 - 1976. The object of this analysis is to identify those equil…
Space-time interaction in Hodgkin's disease in Greater Manchester
Knox's test for space-time interaction was applied to 922 cases of Hodgkin's disease which, according to the North Western Regional Cancer Registry, had presented in 1962-76 among the population of the region known before 1974 as the South East Lancashire Conurbation. In the series as a whole, there were statistically significant excesses of pairs of patients separated by time intervals of less than a year and distances of less than 1 km. Analysi…
The Impact of Falling School-Rolls on the Assignment of Primary Schoolchildren to Secondary Schools in Manchester, 1980-1985
The paper examines the effects of falling rolls in Manchester primary schools both on the catchments and on the intake of the secondary schools in the city during the period 1980-1985. Various formulations of the transportation model in linear programming are used to evaluate the scheme by the Manchester Education Authority for linking primary schools to particular secondary schools. A second analysis adopts similar methods to evaluate recent pro…
Scale Effects and the Information Content of Frequency Arrays Obtained by Quadrat Methods
This paper examines the ways in which information statistics can be used to describe frequency arrays obtained by quadrat analysis of the same point-pattern with different cell sizes. The paper begins by reviewing those aspects of information theory that are pertinent to quadrat analysis, and then a series of results are described which relate the behaviour of the redundancy index to variations in the number of cells used to census the pattern. I…
The Countryside Image: An Investigation of Structure and Meaning
Images of places in the countryside are structured along a number of dimensions corresponding to the attributes perceived in a place. A suitably constructed semantic differential measures the verbal representation of such images. A factor analysis identifies the dimensions, and an oblique solution gives a realistic appraisal of the structure. A second-order factor analysis reveals the nature of the basic structure underlying the images of differi…
An Interpretation of the Journey-to-Work on Merseyside Using Entropy-Maximising Methods
The twin objectives of this study are first, to establish an unbiased statistical framework for interpreting the errors in prediction associated with Wilson's entropy-maximising transportation model and second, to apply the framework to the interpretation of journey-to-work patterns on Merseyside in 1966. The statistical framework centres on various decompositions of the index of information gain, while the empirical work highlights some anomalou…
Some functional characteristics of British City Central Areas: An application of allometric principles
Thomas R. W. (1975) Some functional characteristics of British City Central Areas: an application of allometric principles. Reg. Studies 9, 369–378. The paper examines the relevance of allometric principles to the understanding of relationships between city size and Central Area size. First some allometric models are formulated in terms of the problems being studied and then the appropriateness of these models is tested at two scales of analysis:…
An Interpretation of the Journey-to-Work on Merseyside Using Entropy-Maximising Methods
The twin objectives of this study are first, to establish an unbiased statistical framework for interpreting the errors in prediction associated with Wilson's entropy-maximising transportation model and second, to apply the framework to the interpretation of journey-to-work patterns on Merseyside in 1966. The statistical framework centres on various decompositions of the index of information gain, while the empirical work highlights some anomalou…
The Impact of Falling School-Rolls on the Assignment of Primary Schoolchildren to Secondary Schools in Manchester, 1980-1985
The paper examines the effects of falling rolls in Manchester primary schools both on the catchments and on the intake of the secondary schools in the city during the period 1980-1985. Various formulations of the transportation model in linear programming are used to evaluate the scheme by the Manchester Education Authority for linking primary schools to particular secondary schools. A second analysis adopts similar methods to evaluate recent pro…
Space-time interaction in Hodgkin's disease in Greater Manchester
Knox's test for space-time interaction was applied to 922 cases of Hodgkin's disease which, according to the North Western Regional Cancer Registry, had presented in 1962-76 among the population of the region known before 1974 as the South East Lancashire Conurbation. In the series as a whole, there were statistically significant excesses of pairs of patients separated by time intervals of less than a year and distances of less than 1 km. Analysi…
Controlling HIV/Aids in Ireland: The Implications for Health Policy of Some Epidemic Forecasts
This paper is set within the context of growing opiate use, and in it we develop and apply a modelling framework that is designed to forecast HIV prevalences and AIDS incidences that are consistent with various control scenarios related to the medium-term behaviour of the epidemic in Ireland. This task involves, first, fitting a process-based HIV model to AIDS incidence series for both Ireland and the United Kingdom to estimate national variation…
Forecasting Global HIV-Aids Dynamics: Modelling Strategies and Preliminary Simulations
In the light of the considerable biomathematical effort devoted to building models of the incidence of HIV and AIDS in communities, in this paper a multiregion specification is developed that includes a parsimonious cross-infection mechanism where high-risk and low-risk populations are distinguished by their promiscuity rates. The nature of this mixing is compared with some existing modelling formats, and some preliminary simulations are presente…
Space-Time Interactions in Multiregion Disease Modelling
In this paper, some methods for representing space and time consistently within a deterministic version of the recurrent epidemic model are examined. First, a general framework for transforming a model for a single community into a multiregion counterpart where the frequency of contact between susceptibles and infectives is some inverse function of distance is described. Different spatial interaction representations of the accessibility of the re…
Quantitative methods: Clines, hot spots and cancer clusters
An analysis of psychiatric patient attributes in Salford using categorical data models
Stochastic Carrier Models for the Simulation of Hodgkin's Disease in a System of Regions
In this paper I build on earlier work, which entailed the construction of a deterministic carrier model to simulate the incidence of Hodgkin's disease. This model is developed into an operational stochastic form, which is tested on the monthly incidence of Hodgkin's disease in Greater Manchester, 1962 to 1976. A further refinement is the transformation of this model into a multiregion model, which makes use of gravity interactions in order to sim…
A Single-Region Carrier Model for the Simulation of Hodgkin's Disease Applied to its Incidence in Greater Manchester, 1962-1976
Epidemiologists have found a good deal of anecdotal and statistical evidence to suggest that Hodgkin's disease may be an infectious entity. In this paper a deterministic carrier model is developed in the light of these findings and, in particular, the equilibrium behaviour of the model is explored under various assumptions about the incidence of the disease in Greater Manchester, 1962 - 1976. The object of this analysis is to identify those equil…
The Countryside Image: An Investigation of Structure and Meaning
Images of places in the countryside are structured along a number of dimensions corresponding to the attributes perceived in a place. A suitably constructed semantic differential measures the verbal representation of such images. A factor analysis identifies the dimensions, and an oblique solution gives a realistic appraisal of the structure. A second-order factor analysis reveals the nature of the basic structure underlying the images of differi…
Quantitative methods: Relaxing the constraints
The last article I wrote in this series was set close to the discussion (Batty et al., 1991) of Wilson’s (1967) citation classic, ’A statistical theory of spatial distribution models’. Upon delving into these commentaries, I was struck by the contrast between their guarded stance and the effusive tones Gould (1972) adopted to sell the entropy model to geographers at
Quantitative methods: Input-output analysis as macroeconomic geography
Developments in Mathematical Programming Models and Their Impact on the Spatial Allocation of Educational Resources
Some functional characteristics of British City Central Areas: An application of allometric principles
Thomas R. W. (1975) Some functional characteristics of British City Central Areas: an application of allometric principles. Reg. Studies 9, 369–378. The paper examines the relevance of allometric principles to the understanding of relationships between city size and Central Area size. First some allometric models are formulated in terms of the problems being studied and then the appropriateness of these models is tested at two scales of analysis:…
The Countryside Image: An Investigation of Structure and Meaning
Images of places in the countryside are structured along a number of dimensions corresponding to the attributes perceived in a place. A suitably constructed semantic differential measures the verbal representation of such images. A factor analysis identifies the dimensions, and an oblique solution gives a realistic appraisal of the structure. A second-order factor analysis reveals the nature of the basic structure underlying the images of differi…
An Interpretation of the Journey-to-Work on Merseyside Using Entropy-Maximising Methods
The twin objectives of this study are first, to establish an unbiased statistical framework for interpreting the errors in prediction associated with Wilson's entropy-maximising transportation model and second, to apply the framework to the interpretation of journey-to-work patterns on Merseyside in 1966. The statistical framework centres on various decompositions of the index of information gain, while the empirical work highlights some anomalou…
Scale Effects and the Information Content of Frequency Arrays Obtained by Quadrat Methods
This paper examines the ways in which information statistics can be used to describe frequency arrays obtained by quadrat analysis of the same point-pattern with different cell sizes. The paper begins by reviewing those aspects of information theory that are pertinent to quadrat analysis, and then a series of results are described which relate the behaviour of the redundancy index to variations in the number of cells used to census the pattern. I…
The Impact of Falling School-Rolls on the Assignment of Primary Schoolchildren to Secondary Schools in Manchester, 1980-1985
The paper examines the effects of falling rolls in Manchester primary schools both on the catchments and on the intake of the secondary schools in the city during the period 1980-1985. Various formulations of the transportation model in linear programming are used to evaluate the scheme by the Manchester Education Authority for linking primary schools to particular secondary schools. A second analysis adopts similar methods to evaluate recent pro…
Space-time interaction in Hodgkin's disease in Greater Manchester
Knox's test for space-time interaction was applied to 922 cases of Hodgkin's disease which, according to the North Western Regional Cancer Registry, had presented in 1962-76 among the population of the region known before 1974 as the South East Lancashire Conurbation. In the series as a whole, there were statistically significant excesses of pairs of patients separated by time intervals of less than a year and distances of less than 1 km. Analysi…
A Single-Region Carrier Model for the Simulation of Hodgkin's Disease Applied to its Incidence in Greater Manchester, 1962-1976
Epidemiologists have found a good deal of anecdotal and statistical evidence to suggest that Hodgkin's disease may be an infectious entity. In this paper a deterministic carrier model is developed in the light of these findings and, in particular, the equilibrium behaviour of the model is explored under various assumptions about the incidence of the disease in Greater Manchester, 1962 - 1976. The object of this analysis is to identify those equil…
Developments in Mathematical Programming Models and Their Impact on the Spatial Allocation of Educational Resources
Carrier models for the simulation of Hodgkin's disease: A review with some extensions
Stochastic Carrier Models for the Simulation of Hodgkin's Disease in a System of Regions
In this paper I build on earlier work, which entailed the construction of a deterministic carrier model to simulate the incidence of Hodgkin's disease. This model is developed into an operational stochastic form, which is tested on the monthly incidence of Hodgkin's disease in Greater Manchester, 1962 to 1976. A further refinement is the transformation of this model into a multiregion model, which makes use of gravity interactions in order to sim…
Quantitative methods: Input-output analysis as macroeconomic geography
An analysis of psychiatric patient attributes in Salford using categorical data models
Quantitative methods: Clines, hot spots and cancer clusters
Space-Time Interactions in Multiregion Disease Modelling
In this paper, some methods for representing space and time consistently within a deterministic version of the recurrent epidemic model are examined. First, a general framework for transforming a model for a single community into a multiregion counterpart where the frequency of contact between susceptibles and infectives is some inverse function of distance is described. Different spatial interaction representations of the accessibility of the re…
Quantitative methods: Relaxing the constraints
The last article I wrote in this series was set close to the discussion (Batty et al., 1991) of Wilson’s (1967) citation classic, ’A statistical theory of spatial distribution models’. Upon delving into these commentaries, I was struck by the contrast between their guarded stance and the effusive tones Gould (1972) adopted to sell the entropy model to geographers at
Forecasting Global HIV-Aids Dynamics: Modelling Strategies and Preliminary Simulations
In the light of the considerable biomathematical effort devoted to building models of the incidence of HIV and AIDS in communities, in this paper a multiregion specification is developed that includes a parsimonious cross-infection mechanism where high-risk and low-risk populations are distinguished by their promiscuity rates. The nature of this mixing is compared with some existing modelling formats, and some preliminary simulations are presente…
Controlling HIV/Aids in Ireland: The Implications for Health Policy of Some Epidemic Forecasts
This paper is set within the context of growing opiate use, and in it we develop and apply a modelling framework that is designed to forecast HIV prevalences and AIDS incidences that are consistent with various control scenarios related to the medium-term behaviour of the epidemic in Ireland. This task involves, first, fitting a process-based HIV model to AIDS incidence series for both Ireland and the United Kingdom to estimate national variation…
Mathematics (10 works) · Computer Science (9 works) · Statistics (8 works) · Medicine (7 works) · Geography (6 works) · Demography (5 works) · Econometrics (5 works) · Psychology (5 works) · Economics (4 works) · Environmental health (4 works)