Extended plasticity in commercial-purity zinc sheet

Some microstructures are presented, following on from CoA Memo. No. 137. Annealed c.p. zinc deforms predictably, while the as rolled metal retains the equiaxed grain-size produced by room-temperature rolling. Some evidence of grain growth is apparent in the material strained at 0.2 in/min

Some aspects of electro-chemical grid-marking

Introduction The value of fine grids, electromarked (1) on to metal sheets before pressing, so that the type and magnitude of the strain developed in the critical region of the pressing can be assessed, is undisputed. Keeler (2), Meyer and Newby (3), and Goodwin (4), have all discussed practical applications of this technique and Palmer (5) has reviewed the field and introduced the concept of a relative safety factor (MSF). However it may be useful to see what this 'mark' consists of, how the marking affects the subsequent metal performance, what the limitations of the process are and other peripherical issues. It is these aspects of the process which is the concern of this paper

Solutions of the boundary Yang-Baxter equation for ADE models

We present the general diagonal and, in some cases, non-diagonal solutions of the boundary Yang-Baxter equation for a number of related interaction-round-a-face models, including the standard and dilute A_L, D_L and E_{6,7,8} models.Comment: 32 pages. Sections 7.2 and 9.2 revise

Scalable Breadth-First Search on a GPU Cluster

On a GPU cluster, the ratio of high computing power to communication bandwidth makes scaling breadth-first search (BFS) on a scale-free graph extremely challenging. By separating high and low out-degree vertices, we present an implementation with scalable computation and a model for scalable communication for BFS and direction-optimized BFS. Our communication model uses global reduction for high-degree vertices, and point-to-point transmission for low-degree vertices. Leveraging the characteristics of degree separation, we reduce the graph size to one third of the conventional edge list representation. With several other optimizations, we observe linear weak scaling as we increase the number of GPUs, and achieve 259.8 GTEPS on a scale-33 Graph500 RMAT graph with 124 GPUs on the latest CORAL early access system.Comment: 12 pages, 13 figures. To appear at IPDPS 201

Death by SEPA: Substantive Denials Under Washington\u27s State Environmental Policy Act

This Comment seeks to answer the question raised by West Main II and Cougar Mountain of what procedural processes and substantive policies may be used in SEPA-based denials. After examining the nature of substantive SEPA authority and the relationship between substantive SEPA and Washington\u27s vested rights doctrine, the Comment will discuss West Main II and Cougar Mountain and will argue that the two cases are consistent. It will then provide an informative assessment of the current limits of substantive SEPA authority. The Comment concludes by suggesting the following legislative or judicial changes in SEPA law: earlier vesting of SEPA policies, greater incorporation of environmental concerns into regulatory codes, and restrictions on the content of agency SEPA policies. These changes would create more certainty for property owners, but at the same time, would retain sufficient flexibility for local governments using SEPA to control the environmental impacts of land use decisions

An assessment of the critical strains which can be sustained by a mar-ageing steel under bi-axial tension

Mar-ageing steels are being specified more and more in advanced engineering applications, and, frequently, the components are manufactured from sheet material. Consequently, the evaluation of the sheet forming properties of this material is of paramount importance; this investigation forms part of this general program. The aim here is two-fold, firstly, to determine the maximum strain which can be sustained under bi-axial stress, and secondly, to suggest any way in which this value can be increased

Death by SEPA: Substantive Denials Under Washington\u27s State Environmental Policy Act

This Comment seeks to answer the question raised by West Main II and Cougar Mountain of what procedural processes and substantive policies may be used in SEPA-based denials. After examining the nature of substantive SEPA authority and the relationship between substantive SEPA and Washington\u27s vested rights doctrine, the Comment will discuss West Main II and Cougar Mountain and will argue that the two cases are consistent. It will then provide an informative assessment of the current limits of substantive SEPA authority. The Comment concludes by suggesting the following legislative or judicial changes in SEPA law: earlier vesting of SEPA policies, greater incorporation of environmental concerns into regulatory codes, and restrictions on the content of agency SEPA policies. These changes would create more certainty for property owners, but at the same time, would retain sufficient flexibility for local governments using SEPA to control the environmental impacts of land use decisions