Pamela D. Winterberg, Yanxia Wang, Keng-Mean Lin, John R. Hartono, Glenn T. Nagami, Xin J. Zhou, John M. Shelton, James A. Richardson, and Christopher Y. Lu Department of Pediatrics, Nephrology Division, University of Texas Southwestern Medical Center, Dallas, Texas; Department of Internal Medicine, Nephrology Division, University of Texas Southwestern Medical Center, Dallas, Texas; Department ...

In this thesis, we study the problems of K-means clustering and context quantization. The main task of K-means clustering is to partition the training patterns into k distinct groups or clusters that minimize the mean-square-error (MSE) objective function. But the main difficulty of conventional K-means clustering is that its classification performance is highly susceptible to the initialized s...

We investigate the feasibility of loosely-coupled distributed datacentre architectures colocated with and powered by renewable energy sources and interconnected using high-bandwidth low-latency data links. The design of these architectures advocates (i) variable machine availability: the number of machines accessible at a particular site at any given time is proportional to the amount of renewa...

The satisfiability of random CNF formulae with precisely k variables per clause ("k-SAT") is a popular testbed for the performance of search algorithms. Formulae have M clauses from N variables, randomly negated, keeping the ratio a = M / N fixed . For k = 2, this model has been proven to have a sharp threshold at a = 1 between formulae which are almost aways satisfiable and formulae which are ...

We examine the e¤ect of US branch banking deregulations on the entry size of new …rms using micro-data from the US Census Bureau. We …nd that the average entry size for startups did not change following the deregulations. However, among …rms that survived at least four years, a greater proportion of …rms entered either at their maximum size or closer to the maximum size in the …rst year. The ma...

We propose a multiagent based interpolation system for traffic conditions that includes estimation and learning agents. These agents are allocated to all the road links. The Normalized Velocity (NV) is used in this system. Estimation agents renew the NV for each road link, and learning agents renew the weight values for estimation. The weight values can be calculated by multivariate analysis. E...

[1] A low-dimensional, plasma physics-based, nonlinear dynamical model of the coupled magnetosphere-ionosphere system, called Real-Time Solar Wind Magnetosphere-Ionosphere System (WINDMI), is used to predict AL and Dst values approximately 1 h before geomagnetic substorm and storm event. Subsequently, every 10 min ground-based measurements compiled by World Data Center, Kyoto, are compared with...

Polling I/O mechanisms on the Unix platform such as select() and poll() cause high processing overhead when they are used in a heavily-loaded network server with many concurrent open sockets. Large waste of processing power incurs not only service degradation but also various troubles such as high electronic power consumption and worsened MTBF of server hosts. It is thus a serious issue especia...

The biobleaching efficiency of xylanase and laccase enzymes was studied on kraft pulps from wood and nonwood based raw materials employed in the Indian paper industry. Treatment of these pulps with xylanase enzyme could result in improved properties, showing 2.0% ISO gain in pulp brightness and/or reducing the demand of chlorine-based bleach chemicals by up to 15% with simultaneous reduction of...