Anderson localization of elementary excitations in a one dimensional Bose-Einstein condensate

We study the elementary excitations of a transversely confined Bose-Einstein condensate in presence of a weak axial random potential. We determine the localization length (i) in the hydrodynamical low energy regime, for a domain of linear densities ranging from the Tonks-Girardeau to the transverse Thomas-Fermi regime, in the case of a white noise potential and (ii) for all the range of energies, in the ``one-dimensional mean field regime'', in the case where the randomness is induced by a series of randomly placed point-like impurities. We discuss our results in view of recent experiments in elongated BEC systems.Comment: 11 pages, 6 figures. Final printed versio

A DC to 40GHz Low Cost Surface Mountable RF-VIA TM Package

The ultimate goal for low cost packages for millimeterwave MMIC is to realize a miniature, light weight surface mount type package. This paper describes the design technologies of newly developed package, where we optimized via design by multilayer ceramic structure. As a result, insertion loss is about –0.5dB at 40 GHz (measurement include mounting board + one feedthrough) has been realized

The Effects of Inlet Flow Modification on Cavitating Inducer Performance

This paper explores the effect of inlet flow modification on the cavitating and noncavitating performance of two cavitating inducers, one of simple helical design and the other a model of the low-pressure LOX pump in the Space Shuttle Main Engine. The modifications were generated by sections of honeycomb, both uniform and nonuniform. Significant improvement in the performance over a wide range of flow coefficients resulted from the use of either honeycomb section. Measurements of the axial and swirl velocity profiles of the flows entering the inducers were made in order to try to understand the nature of the inlet flow and the manner in which it is modified by the honeycomb sections

Improving health and well-being through community health champions: a thematic evaluation of a programme in Yorkshire and Humber.

AIMS: The contribution that lay people can make to the public health agenda is being increasingly recognised in research and policy literature. This paper examines the role of lay workers (referred to as 'community health champions') involved in community projects delivered by Altogether Better across Yorkshire and Humber. The aim of the paper is to describe key features of the community health champion approach and to examine the evidence that this type of intervention can have an impact on health. METHODS: A qualitative approach was taken to the evaluation, with two strands to gathering evidence: interviews conducted with different stakeholder groups including project leads, key partners from community and statutory sectors and community workers, plus two participatory workshops to gather the views of community health champions. Seven projects (from a possible 12) were identified to be involved in the evaluation. Those projects that allowed the evaluation team to explore fully the champion role (training, infrastructure, etc.) and how that works in practice as a mechanism for empowerment were selected. In total, 29 semi-structured interviews were conducted with project staff and partners, and 30 champions, varying in terms of age, gender, ethnicity and disability, took part in the workshops. RESULTS: Becoming a community health champion has health benefits such as increased self-esteem and confidence and improved well-being. For some champions, this was the start of a journey to other opportunities such as education or paid employment. There were many examples of the influence of champions extending to the wider community of family, friends and neighbours, including helping to support people to take part in community life. Champions recognised the value of connecting people through social networks, group activities, and linking people into services and the impact that that had on health and well-being. Project staff and partners also recognised that champions were promoting social cohesiveness and helping to integrate people into their community. CONCLUSIONS: The recent public health White Paper suggested that the Altogether Better programme is improving individual and community health as well as increasing social capital, voluntary activity and wider civic participation. This evaluation supports this statement and suggests that the community health champion role can be a catalyst for change for both individuals and communities

A Simple Theory of Defensive Patenting

This paper examines innovating firms’ incentives to engage in defensive patenting. It first establishes a “truce equilibrium” in patent enforcement: when litigation is costly, the equal strength of two symmetric parties’ patent portfolios deters any patent disputes along the equilibrium path. This equilibrium behavior generates two benefits of defensive patenting, namely, to prevent licensing outlays and to protect downstream investments. In addition, firms can use patents to coordinate non-contractible investment decisions. Depending on the joint interests, they can either reach a license in order to guarantee high investment incentives, or agree not to grant a license so that investments are deterred by the litigation threat. On the other hand, the strategic patenting concern may generate a bandwagon of patent accumulation, where firms rush to the patent office to get a patent, but the subsequent investment performance is the same as when there is no patent at all. The paper also argues that defensive patenting may weaken the effectiveness of patents as an appropriation scheme. This offers an explanation that the “pro-patent” policy shift in the United States since the 1980s may actually have undermined the incentive power of the patent system

Soil Particle Density Protocol

The purpose of this resource is to measure the soil particle density of each horizon in a soil profile. Students weigh a sample of dry, sieved soil from a horizon, mix it with distilled water and then boil the mixture to remove any air. The mixture cools for a day and then students add water until the volume of the mixture is 100 mL. Students measure the temperature and mass of the final mixture and use the Soil Particle Density Data Sheet to calculate the soil particle density. Three samples should be measured for each horizon. Educational levels: Middle school, High school

Nurseries and emotional well-being. Evaluating an emotionally containing model of professional development

Despite official endorsement of attachment principles in nursery work, these are often not translated into nursery practice. One possible reason for this is that staff training does not sufficiently address the personal implications and anxieties that children's attachments may entail for practitioners. Working from a psychoanalytic perspective on organisational functioning and group learning, this paper describes action research with a group of nursery heads who participated in a professional development programme designed specifically to explore emotional experience in professional work. The positive evaluations of the programme by heads and their staff are described including examples of experiential learning and of increased staff awareness about, and responsiveness to, the emotional experience of children. However, the research also concluded that sustained effectiveness of the model is likely to be dependent on an ongoing culture of attention to the emotional experience of nursery staff within nursery umbrella organisations

ATM Locator

In this paper, we focus on an automated teller machineintegrated with ATM locator device. When particular ATM is not working it helps you to find the closest ATMs that can provide surcharge free cash withdrawals for your Money Pass network card. It also finds the direction to nearby ATMs using built in GPS (global positioning system). The GPS will give you the accurate location of your nearby ATMs. Since no ATM had this option if we implement this it will benefit the card holders and customer satisfaction level will be increased