Diffusion Kinetics in Radiation Chemistry. II. One-Radical-One-Solute Model; Calculations

The general diffusion‐kinetic equations are applied to a one‐radical‐one‐solute model of the radiolysis of dilute aqueous solutions. The validity of the prescribed diffusion approximation is examined. Results of calculations of the effect on the molecular and radical yields of the following parameters are given: solute concentration, solute depletion, shape of initial radical distribution, radical density, diffusion coefficients, and rate constants. Conditions under which a straight track of equal and equidistant spherical spurs can be replaced by either isolated spherical spurs or an axially homogeneous cylindrical track are examined

Diffusion kinetics in radiation chemistry. I. Generalized formulation and criticism of diffusion model

A generalized formulation of the diffusion-kinetic model of track effects in radiation chemistry is presented and criticized. It permits consideration of complex mechanisms, arbitrary initial distributions and radical correlation effects. Methods for the numerical integration of the associated differential equations on high-speed electronic digital computers are given and their accuracy is examined. Several applications are suggested

A differential correction algorithm for exponential curve fitting / CAC No. 92

Includes bibliographies

Research in network data management resource sharing : multi-copy resiliency techniques.

Includes bibliographic references (p. 48).This paper describes strategy which allows resources to be shared in a resilient manner while minimizing user delay. The strategy described supports two-host resiliency. That is, at least two of the cooperating hosts must simultaneously malfunction while in the process of cooperation, and the malfunction must be of a very restricted form in order for undetectable or unrecoverable failure to occur. Extension to n-host resiliency is also discussed

Networking research in front ending and intelligent terminals : H6000 software specifications

"CCTC-WAD document no. 7501.""Prepared for the Command and Control Technical Center, WWMCCS ADP Directorate, Defense Communications Agency, Washington, D. C."Bibliography: leaf 26

Fast Near-Lossless or Lossless Compression of Large 3D Neuro-Anatomical Images

3D neuro-anatomical images and other volumetric data sets are important in many scientific and biomedical fields. Since such sets may be extremely large, a scalable compression method is critical to store, process and transmit them. To achieve a high compression rate, most of the existing volume compression methods are lossy, which is usually unacceptable in biomedical applications. Our near-lossless or lossless compression algorithm uses a Hilbert traversal to produce a data stream from the original image. This data stream enjoys relatively slow image context change, which helps the subsequent DPCM prediction to reduce the source entropy. An extremely fast linear DPCM is used; the prediction error is further encoded using Huffman code. In order to provide efficient data access, the source image is divided into blocks and indexed by an octree data structure. The Huffman coding overhead is effectively reduced using a novel binning algorithm. Our compression method is designed for performance-critical digital brain atlas applications, which often require very fast data access without prior decompression and for which a modest compression rate is acceptable

Optimization problems in distributed data management / CAC No. 197

"CCTC-WAD document no. 6504.""This paper is to be published in the proceedings of the third International Conference on Computer Communication, Toronto, Aug. 1976."On cover: Research in network data management and resource sharing.Bibliography: p. 20