WorldCat Identities

Perkins, Edwin Arend 1953-

Overview
Works: 36 works in 113 publications in 2 languages and 1,264 library holdings
Genres: Conference papers and proceedings 
Roles: Author, Creator
Publication Timeline
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Most widely held works by Edwin Arend Perkins
Lectures on probability theory and statistics : Ecole d'Ete de Probabilites de Saint-Flour XXIX - 1999 by Erwin Bolthausen( Book )

28 editions published in 2002 in English and held by 285 WorldCat member libraries worldwide

This new volume of the long-established St. Flour Summer School of Probability includes the notes of the three major lecture courses by Erwin Bolthausen on "Large Deviations and Iterating Random Walks", by Edwin Perkins on "Dawson-Watanabe Superprocesses and Measure-Valued Diffusions", and by Aad van der Vaart on "Semiparametric Statistics."
Historical processes by Donald A Dawson( Book )

15 editions published between 1990 and 1991 in English and Undetermined and held by 239 WorldCat member libraries worldwide

On the martingale problem for interactive measure-valued branching diffusions by Edwin Arend Perkins( Book )

15 editions published between 1993 and 1995 in English and held by 230 WorldCat member libraries worldwide

Voter model perturbations and reaction diffusion equations by J. T Cox( Book )

10 editions published in 2013 in English and French and held by 167 WorldCat member libraries worldwide

"We consider particle systems that are perturbations of the voter model and show that when space and time are rescaled the system converges to a solution of a reaction diffusion equation in dimensions d[greater than or equal to]3. Combining this result with properties of the P.D.E., some methods arising from a low density super-Brownian limit theorem, and a block construction, we give general, and often asymptotically sharp, conditions for the existence of non-trivial stationary distributions, and for extinction of one type. As applications, we describe the phase diagrams of four systems when the parameters are close to the voter model: (i) a stochastic spatial Lotka-Volterra model of Neuhauser and Pacala, (ii) a model of the evolution of cooperation of Ohtsuki, Hauert, Lieberman, and Nowak, (iii) a continuous time version of the non-linear voter model of Molofsky, Durrett, Dushoff, Griffeath, and Levin, (iv) a voter model in which opinion changes are followed by an exponentially distributed latent period during which voters will not change again. The first application confirms a conjecture of Cox and Perkins ("Survival and coexistence in stochastic spatial Lotka-Volterra models", 2007) and the second confirms a conjecture of Ohtsuki et al. ("A simple rule for the evolution of cooperation on graphs and social networks", 2006) in the context of certain infinite graphs. An important feature of our general results is that they do not require the process to be attractive."--Page 4 of cover
Superprocesses at Saint-Flour by Donald A Dawson( Book )

5 editions published in 2012 in English and held by 12 WorldCat member libraries worldwide

A non-standard approach to Brownian local time by Edwin Arend Perkins( )

4 editions published in 1979 in English and held by 8 WorldCat member libraries worldwide

A space-time property of a class of measure-valued branching diffusions by Edwin Arend Perkins( Book )

3 editions published in 1986 in English and held by 5 WorldCat member libraries worldwide

The strong Markov property of the support of super-Brownian motion by Edwin Arend Perkins( Book )

2 editions published in 1993 in English and held by 4 WorldCat member libraries worldwide

New dimensions in U.S. foreign policy by Edward J Perkins( Book )

2 editions published in 1990 in English and held by 4 WorldCat member libraries worldwide

Supplement to The poetical works of Charles Harpur( Book )

1 edition published in 1984 in English and held by 3 WorldCat member libraries worldwide

Lectures on Probability Theory and Statistics : Ecole d'Ete de Probabilites de Saint-Flour XXIX - 1999 by Erwin Bolthausen( )

2 editions published in 2002 in English and held by 3 WorldCat member libraries worldwide

Annotation
Lectures on probability theory and statistics( )

1 edition published in 2002 in English and held by 3 WorldCat member libraries worldwide

Weeds of fence rows and adjacent fields in Carroll County, Ohio by Edwin Arend Perkins( )

1 edition published in 1974 in English and held by 2 WorldCat member libraries worldwide

The Gating Mechanism of Mechanosensitive Channels in Droplet Interface Bilayers( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

ABSTRACT: MscL, a large-conductance mechanosensitive channel, is a ubiquitous osmolyte release valve that aids bacteria in surviving abrupt hypo-osmotic shocks. The large scale of its tension-driven opening transition makes it a strong candidate to serve as a transducer in novel stimuli-responsive biomolecular materials. In the previous work, a low-threshold gain-of-function V23T mutant of MscL produced a reliable activation behavior in a droplet interface bilayer (DIB) with applied axial droplet compression. Near the maximal compression, the aqueous droplets deform and the resulting increase in surface area leads to an increase in tension in the water-lipid-oil interface. This increase in tension is the product of the relative change in the droplet surface area and the elastic modulus of the DPhPC lipid monolayer (∼120 mN/m). This paper, presents a study of the physical processes that cause MscL gating in the DIB. Analysis of video during compression and relaxation of the droplets is utilized to estimate the change in the surface area of the droplet and the variation on monolayer surface tension. The monolayer surface tension is proportional to the area change of the droplet normalized to the original surface area. The results demonstrate that the area change in the droplet is negligible at frequencies above 1 Hz, but is approximately 2% at frequencies in the range of 100 mHz. In addition, at low frequencies (∼0.2 Hz) bilayer thinning occurs at maximum compression, proving an increase in bilayer tension. However, this study also shows that gating at frequencies higher than 0.2 Hz could be achieved through the application of high duty cycle oscillation (∼75%). The relative change in monolayer area increases significantly at higher duty cycle oscillations where the compression stroke is much faster than the relaxation stroke
Computational modeling of bacteriophage self-assembly during formation of hierarchical structures( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

ABSTRACT: Designing new materials with well-defined structures and desired functions is a challenge in materials science, especially with nanomaterials. Nature, however, solves design of these materials through a self-assembling, hierarchically ordered process. We have investigated the mechanisms by which the high- aspect ratio and unique surface chemistry of M13 bacteriophage can give rise to increasingly complex, hierarchically ordered, bundled phage structures with a wide range of material applications. A molecular dynamic simulation of the 3-D structure of a 20-nm section of wild type (WT) and mutant phage types were developed based on WT phage crystal structure and ab initio calculations. Simulations of these phage were then used to examine repulsive and attractive forces of the particles in solution. Examination of contact interactions between two WT phage indicated the phage were maximally attracted to each other in a head to tail orientation. A mutant phage (4E) with a higher negative surface charge relative to WT phage also preferentially ordered head to tail in solution. In contrast, a mutant phage (CLP8) with a net positive surface charge had minimal repulsion in a 90° orientation. Understanding the self-assembly process through molecular dynamic simulations and decomposition of fundamental forces driving inter- and intra-strand interactions has provided a qualitative assessment of mechanisms that lead to hierarchical phage bundle structures. Results from simulation agree with experimentally observed patterns from self-assembly. We anticipate using this system to further investigate development of hierarchical structures not only from biological molecules but also from synthetic materials
MgO Nanomaterials Improve Fibroblast Adhesion and Proliferation( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

ABSTRACT: Magnesium (Mg) plays an important role in the body mediating cell-extracellular matrix (ECM) interactions, bone apatite structure and density, and nucleic acid chemistries. While Mg has been investigated as a biomaterial for bone applications, it has not been studied for applications within soft tissues. This study investigated, for the first time, the response of fibroblasts to magnesium oxide (MgO) nanoparticles for soft tissue engineering applications. Primary human dermal fibroblasts were cultured both on tissue culture polystyrene in media supplemented with MgO nanoparticles as well as on poly-L-lactic acid (PLLA)-MgO nanoparticle composites. As this study was conducted concurrently with a study aimed at bone tissue engineering, hydroxyapatite (HA) nanomaterials were used for comparison. Results showed for the first time that fibroblasts adhered onto MgO-containing composites roughly three times better than HA-PLLA samples and roughly 4.5 times better than plain PLLA samples. Fibroblasts also proliferated to statistically higher densities when cultured in medium supplemented with MgO nanoparticles compared to un-supplemented medium and medium supplemented with HA nanoparticles. These preliminary results together suggest that MgO nanoparticles should be further investigated as materials to improve the regeneration of soft tissues as well as bone
Brownian slow points: the critical case by B Davis( Book )

1 edition published in 1983 in English and held by 1 WorldCat member library worldwide

M13 Bacteriophage Biolaminates for Nanomaterials with Improved Stiffness( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

ABSTRACT: In nature, biomolecules guide the formation of hierarchically-ordered, lightweight, inorganic-organic composites such as corals, shells, teeth and bones. M13 bacteriophage has been used to mimic bio-inspired material development due to its rigid, nanoscale rod-like morphology. Liquid-crystalline monolayers of genetically engineered phage have been used to template crystallization of thin layers of inorganic and metallic materials. We have created thin films composed of engineered M13 phage capable of binding inorganic components. We employed both a dip-cast and a drop-cast film fabrication method on both smooth and rough gold, silica and glass casting surfaces to create thin films and 3D structures of various degrees of hierarchical order. We have found the engineered M13 phage and the inorganic mineral significantly affected both film morphology and the mechanical properties of the film. Similarly, film fabrication parameters such as solution chemistry, temperature, and pulling speed affected film properties. Using a calcium phosphate biomineralized 4E phage, film thickness increased linearly with the number of layers/dips in the phage solution. The stiffness of these composites (Young's modulus) were >80 GPa for mineralized, multilayer films. These materials are an order of magnitude stiffer than the biological equivalent collagen. Stiffness, however, does not appear to increase in a multilayer film beyond a saturation point. Ultimately, we have developed a platform for phage-based bio-composites for developing high performance materials
Lectures on probability theory and statistics : Ecole d'Eté de Probabilités de Saint-Flour XXV - 1995 by Michel Emery( )

2 editions published between 2002 and 2004 in English and held by 0 WorldCat member libraries worldwide

This new volume of the long-established St. Flour Summer School of Probability includes the notes of the three major lecture courses by Erwin Bolthausen on "Large Deviations and Iterating Random Walks", by Edwin Perkins on "Dawson-Watanabe Superprocesses and Measure-Valued Diffusions", and by Aad van der Vaart on "Semiparametric Statistics."
Importing Plant Stock for Wetland Restoration and Creation: Maintaining Genetic Diversity and Integrity by Bill Streever( )

1 edition published in 2000 in English and held by 0 WorldCat member libraries worldwide

This technical note provides background information and general guidelines for maintaining genetic diversity and integrity in wetland restoration and creation projects that use imported plant stock
 
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Lectures on probability theory and statistics : Ecole d'Ete de Probabilites de Saint-Flour XXIX - 1999Lectures on Probability Theory and Statistics : Ecole d'Ete de Probabilites de Saint-Flour XXIX - 1999Lectures on probability theory and statisticsLectures on probability theory and statistics : Ecole d'Eté de Probabilités de Saint-Flour XXV - 1995
Alternative Names
Arend-Perkins, E. 1953-

Arend-Perkins, Edwin 1953-

Ed Perkins canadisk matematiker

Ed Perkins kanadensisk matematiker

Ed Perkins kanadisk matematikar

Ed Perkins kanadisk matematiker

Ed Perkins mathematician

Edwin A. Perkins kanadischer Mathematiker

Edwin Arend Perkins Canadees wiskundige

Edwin Perkins

Perkins, E.

Perkins, E. 1953-

Perkins, E. (Edwin), 1953-

Perkins, Ed 1953-

Perkins, Edwin.

Perkins, Edwin 1953-

Perkins, Edwin A.

Perkins, Edwin A. 1953-

Perkins, Edwin Arend 1953-

Languages
English (96)

French (2)

Covers
Lectures on Probability Theory and Statistics : Ecole d'Ete de Probabilites de Saint-Flour XXIX - 1999Lectures on probability theory and statisticsLectures on probability theory and statistics : Ecole d'Eté de Probabilités de Saint-Flour XXV - 1995