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206
An estimating function approach to inference for inhomogeneous Neyman-Scott processes
- Biometrics
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Persuasive cued click-points: Design, implementation, and evaluation of a knowledge-based authentication mechanism
, 2011
"... This paper presents an integrated evaluation of the Persuasive Cued Click-Points graphical password scheme, including usability and security evaluations, and implementation considerations. An important usability goal for knowledge-based authentication systems is to support users in selecting passwor ..."
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Cited by 30 (2 self)
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This paper presents an integrated evaluation of the Persuasive Cued Click-Points graphical password scheme, including usability and security evaluations, and implementation considerations. An important usability goal for knowledge-based authentication systems is to support users in selecting passwords of higher security, in the sense of being from an expanded effective security space. We use persuasion to influence user choice in click-based graphical passwords, encouraging users to select more random, and hence more difficult to guess, click-points.
Modelling spatial point patterns in R
- Case Studies in Spatial Point Pattern Modelling. Lecture Notes in Statistics 185, 23–74
, 2006
"... Summary. We describe practical techniques for fitting stochastic models to spatial point pattern data in the statistical package R. The techniques have been implemented in our package spatstat in R. They are demonstrated on two example datasets. 1 ..."
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Cited by 28 (2 self)
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Summary. We describe practical techniques for fitting stochastic models to spatial point pattern data in the statistical package R. The techniques have been implemented in our package spatstat in R. They are demonstrated on two example datasets. 1
Modern statistics for spatial point processes
, 2006
"... We summarize and discuss the current state of spatial point process theory and directions for future research, making an analogy with generalized linear models and random effect models, and illustrating the theory with various examples of applications. In particular, we consider Poisson, Gibbs, and ..."
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Cited by 27 (3 self)
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We summarize and discuss the current state of spatial point process theory and directions for future research, making an analogy with generalized linear models and random effect models, and illustrating the theory with various examples of applications. In particular, we consider Poisson, Gibbs, and Cox process models, diagnostic tools and model checking, Markov chain Monte Carlo algorithms, computational methods for likelihood-based inference, and quick non-likelihood approaches to inference.
Book reviews
- Statistics of the British Economy, by F. M. M
"... Overdiagnosis and overtreatment of breast cancer Progression of ductal carcinoma in situ: the pathological perspective ..."
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Cited by 20 (1 self)
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Overdiagnosis and overtreatment of breast cancer Progression of ductal carcinoma in situ: the pathological perspective
Population distribution, settlement patterns and accessibility across Africa in 2010. PLoS
- One
, 2012
"... The spatial distribution of populations and settlements across a country and their interconnectivity and accessibility from urban areas are important for delivering healthcare, distributing resources and economic development. However, existing spatially explicit population data across Africa are gen ..."
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Cited by 14 (0 self)
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The spatial distribution of populations and settlements across a country and their interconnectivity and accessibility from urban areas are important for delivering healthcare, distributing resources and economic development. However, existing spatially explicit population data across Africa are generally based on outdated, low resolution input demographic data, and provide insufficient detail to quantify rural settlement patterns and, thus, accurately measure population concentration and accessibility. Here we outline approaches to developing a new high resolution population distribution dataset for Africa and analyse rural accessibility to population centers. Contemporary population count data were combined with detailed satellite-derived settlement extents to map population distributions across Africa at a finer spatial resolution than ever before. Substantial heterogeneity in settlement patterns, population concentration and spatial accessibility to major population centres is exhibited across the continent. In Africa, 90 % of the population is concentrated in less than 21 % of the land surface and the average per-person travel time to settlements of more than 50,000 inhabitants is around 3.5 hours, with Central and East Africa displaying the longest average travel times. The analyses highlight large inequities in access, the
Spatial quantitative analysis of fluorescently labeled nuclear structures: problems, methods, pitfalls. Chromosome Res
, 2008
"... `These authors contributed equally. Key words: confocal microscopy, image quantification, nucleus, preprocessing The vast majority of microscopic data in biology of the cell nucleus is currently collected using fluorescence microscopy, and most of these data are subsequently subjected to quantitativ ..."
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Cited by 10 (1 self)
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`These authors contributed equally. Key words: confocal microscopy, image quantification, nucleus, preprocessing The vast majority of microscopic data in biology of the cell nucleus is currently collected using fluorescence microscopy, and most of these data are subsequently subjected to quantitative analysis. The analysis process unites a number of steps, from image acquisition to statistics, and at each of these steps decisions must be made that may crucially affect the conclusions of the whole study. This often presents a really serious problem because the researcher is typically a biologist, while the decisions to be taken require expertise in the fields of physics, computer image analysis, and statistics. The researcher has to choose between multiple options for data collec-tion, numerous programs for preprocessing and processing of images, and a number of statistical approaches. Written for biologists, this article discusses some of the typical problems and errors that should be avoided. The article was prepared by a team uniting expertise in biology, microscopy, image analysis, and statistics. It con-siders the options a researcher has at the stages of data acquisition (choice of the microscope and acquisition settings), preprocessing (filtering, intensity normalization, deconvolution), image processing (radial distribution, clustering, co-localization, shape and orientation of objects), and statistical analysis.
A toolbox for fitting complex spatial point process models using integrated Laplace transformation (INLA)
, 2010
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Impact of primary user activity patterns on spatial spectrum reuse opportunities
- in Proc. of European Wireless Conference (EW’10
"... Abstract—Activity patterns of primary users have significant influence on the opportunities for secondary use of spectrum. In this paper we explore this impact in terms of spatial spectrum reuse opportunities. More specifically, we model the primary user activity as a Semi-Markov ON/OFF process with ..."
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Abstract—Activity patterns of primary users have significant influence on the opportunities for secondary use of spectrum. In this paper we explore this impact in terms of spatial spectrum reuse opportunities. More specifically, we model the primary user activity as a Semi-Markov ON/OFF process with varying distributions of holding times of ON and OFF states. We have used realistic holding time distributions obtained from extensive measurement campaigns. These activity patterns are combined with a collection of primary user transmitter locations, based on a real deployed cellular network. Based on these, we study the impact of activity model parameters on opportunities of spatial spectrum reuse. The results indicate that for the scenarios studied here the overall duty cycle defined by the activity pattern plays the key role also in determining spatial spectrum opportunities. We also discuss applications of the obtained results, including development of lightweight models for occurrences of spectrum opportunities over both time and space. I.
Ecological importance of large-diameter trees in a temperate mixed-conifer forest. Plos One
, 2012
"... Part of the Forest Management Commons This Article is brought to you for free and open access by the Forest Management at ScholarWorks. It has been accepted for inclusion in Forest Management Faculty Publications by an authorized administrator of ScholarWorks. For more information, please contact ..."
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Cited by 7 (0 self)
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Part of the Forest Management Commons This Article is brought to you for free and open access by the Forest Management at ScholarWorks. It has been accepted for inclusion in Forest Management Faculty Publications by an authorized administrator of ScholarWorks. For more information, please contact
