J. N. Srivastava and experimental design

J. N. Srivastava was a tremendously productive statistical researcher for five decades. He made significant contributions in many areas of statistics, including multivariate analysis and sampling theory. A constant throughout his career was the attention he gave to problems in discrete experimental design, where many of his best known publications are found. This paper focuses on his design work, tracing its progression, recounting his key contributions and ideas, and assessing its continuing impact. A synopsis of his design-related editorial and organizational roles is also included

Selected Papers in Combinatorics - a Volume Dedicated to R.G. Stanton

Professor Stanton has had a very illustrious career. His contributions to mathematics are varied and numerous. He has not only contributed to the mathematical literature as a prominent researcher but has fostered mathematics through his teaching and guidance of young people, his organizational skills and his publishing expertise. The following briefly addresses some of the areas where Ralph Stanton has made major contributions

When the Tide is High: Estimating the Welfare Impact of Coastal Erosion Management

A choice experiment was undertaken at Buffalo beach, Whitianga, in order to investigate beach visitors’ preferences for various coastal erosion management options. Constructing rock seawalls is a common response to coastal erosion but seawalls can negatively affect visual amenity, biodiversity and recreational values. The choice experiment results from this study show that the average visitor would be willing to pay $20 per year to remove an existing rock wall at either end of Buffalo beach. Visitors place high value on useable sandy beaches and reserve areas behind the beach. A latent class analysis reveals there are distinct sub-groups with varying preferences for beach characteristics. This paper presents a model with separate classes for residents and visitors and the compensating variation estimates to calculate the overall welfare effect for three coastal management scenarios.Environmental Economics and Policy,

Throughput-driven floorplanning with wire pipelining

The size of future high-performance SoC is such that the time-of-flight of wires connecting distant pins in the layout can be much higher than the clock period. In order to keep the frequency as high as possible, the wires may be pipelined. However, the insertion of flip-flops may alter the throughput of the system due to the presence of loops in the logic netlist. In this paper, we address the problem of floorplanning a large design where long interconnects are pipelined by inserting the throughput in the cost function of a tool based on simulated annealing. The results obtained on a series of benchmarks are then validated using a simple router that breaks long interconnects by suitably placing flip-flops along the wires