The mechanical properties of anisotropic polymers

The work in this period can conveniently be split into two parts which are reported separately. Part I is concerned with experimental work on the stress-strain properties of anisotropic polythene. This work was initiated as a first step in the collection of data on anisotropic polymers. The results provide a very useful, general idea of the properties of a polymer, together with their variation with anisotropy. The experience gained during this work has also been of use when considering apparatus design details for creep measurements. Part II is concerned with the design of an apparatus for creep studies. The design considerations are discussed in Section 1; an outline of several design proposals being given in Section 2. The design project was started in the latter part of the period under review and therefore no comprehensive tests have yet been performed

Privacy In The Smart Grid: An Information Flow Analysis

Project Final Report prepared for CIEE and California Energy Commissio

Environmental Standards, Management Systems and the Illusion of Progress

This paper aims to specify the conceptual and operational limits of codified environmental management systems (EMSs). Taking technical standardization as a departure-point, it is argued that key shortcomings regarding the contribution of EMSs towards environmental performance improvement (and thus ecological sustainability) can be identified: First, there are limitations to the self-regulatory framework adopted by organizations. Second, there are problems inherent within the development of EMS from prior management systems approaches, mostly based on a narrow and limited definition of quality. Third, there are errors of implementation and associated certification which compound a lack of progress in environmental improvement and progress towards sustainability. The implications of these limitations are presented and it is demonstrated that they are compounded by an appearance of progress, when in reality, little is changing. The authors point out that this failure of system based self-regulation argues for a move to performance based regime, driven if necessary by regulation

Barriers and Incentives to the Adoption of ISO 14001 by Firms in the United States

This paper summarizes four novel advanced antenna concepts explored in the framework of the WINNER+ project. The concepts are related to multiuser MIMO communication in cellular networks, focusing on the acquisition and application of channel state information (CSI) at the transmitter in time-division-duplex (TDD) mode. The concepts include new ideas for CSI modeling and sounding for the purposes of multiuser precoding, and methods for pilot signal design with the aim to support the estimation of different CSI quantities. Furthermore, a new relaying strategy for terminal-to-terminal communication is described. All the ideas are feasible for adoption into practical upcoming communication systems such as LTE-Advanced, and most of the proposed concepts have only a minor impact on standards. Our study indicates that the CSI at its best is not only about estimating the channel responses between different antenna pairs. What counts is the nature of the intended communication link as well as the form in which CSI is applied.QC 20111102</p

An Impacting Descent Probe for Europa and the other Galilean Moons of Jupiter

We present a study of an impacting descent probe that increases the science return of spacecraft orbiting or passing an atmosphere-less planetary body of the solar system, such as the Galilean moons of Jupiter. The descent probe is a carry-on small spacecraft (< 100 kg), to be deployed by the mother spacecraft, that brings itself onto a collisional trajectory with the targeted planetary body in a simple manner. A possible science payload includes instruments for surface imaging, characterisation of the neutral exosphere, and magnetic field and plasma measurement near the target body down to very low-altitudes (~1 km), during the probe's fast (~km/s) descent to the surface until impact. The science goals and the concept of operation are discussed with particular reference to Europa, including options for flying through water plumes and after-impact retrieval of very-low altitude science data. All in all, it is demonstrated how the descent probe has the potential to provide a high science return to a mission at a low extra level of complexity, engineering effort, and risk. This study builds upon earlier studies for a Callisto Descent Probe (CDP) for the former Europa-Jupiter System Mission (EJSM) of ESA and NASA, and extends them with a detailed assessment of a descent probe designed to be an additional science payload for the NASA Europa Mission.Comment: 34 pages, 11 figure

Information standards to support application and enterprise interoperability for the smart grid

Copyright @ 2012 IEEE.Current changes in the European electricity industry are driven by regulatory directives to reduce greenhouse gas emissions, at the same time as replacing aged infrastructure and maintaining energy security. There is a wide acceptance of the requirement for smarter grids to support such changes and accommodate variable injections from renewable energy sources. However the design templates are still emerging to manage the level of information required to meet challenges such as balancing, planning and market dynamics under this new paradigm. While secure and scalable cloud computing architectures may contribute to supporting the informatics challenges of the smart grid, this paper focuses on the essential need for business alignment with standardised information models such as the IEC Common Information Model (CIM), to leverage data value and control system interoperability. In this paper we present details of use cases being considered by National Grid, the GB transmission system operator for information interoperability in pan-network system management and planning.This study is financially supported by the National Grid, UK

Alternative line delivery strategies support a forklift free transition in a high product variety environment

Forklift transport fails when it comes to efficiency. As a result, more and more attention is going to alternative transport systems that automate or further structure the material flow; such as line deliveries by train and conveyor technology. Only substituting the transport system itself is not cost-effective. The resulting improvements are rather low compared to the high investment cost. Therefore, in this paper alternative material flow and line delivery strategies are taken into consideration. Within a high product variety environment a combination of materials kitting and line stocking is proposed. This approach has some important benefits on top of the pure forklift free transition. A basic model is constructed to calculate the kitting area and transport system requirements. A truck assembly company is used as case study. A feasibility study is carried out, to give a rough indication of the cost-effectiveness of the model