Powder metallurgical materials and processes for soft magnetic applications

For many designers of electrical machines, the term “soft magnetic materials” automatically means laminated electrical sheet. This is unfortunate, since for many applications, particularly at low frequencies, laminated sheet is rarely the best material choice. Soft magnetic powder materials are available to satisfy the needs of virtually any application imaginable, from plain iron, giving good induction for DC applications, to ultra-high permeability nickel irons. The use of these materials brings with it all the attendant advantages of powder metallurgical (PM) production: low cost, tight tolerances, complicated forms, and minimal material waste. For high frequency applications, a range of soft magnetic composite materials or SMCs are available which can provide magnetic performance comparable to or surpassing that of laminated sheets, while at the same time allowing much greater freedom to the designer due to their isotropic nature, which permits the implementation of complicated 3D flux paths. This paper presents a review of the available powder-based soft magnetic materials, together with typical applications and a consideration of some of the factors which must be taken into account when producing powder-based components for magnetic applications

Web usability survey and script

This document supplies the survey and script used in the usability tests for the article "Side by side: What a comparative usability study told us about a web site redesign", which will appear in the Journal of Web Librarianship. The script and survey will not appear in the article itself.unpublishednot peer reviewe

APPROACH B: FINDING NEW USES FOR FARM PRODUCTS

Marketing,

How Endogenous Is Money? Evidence from a New Microeconomic Estimate

This paper uses microeconomic data on firms’ money demand and investment in physical capital for the period 1983-2006 to estimate the extent to which variation in the U.S. money supply is an endogenous response to variation in firms’ demand for liquidity. We estimate a simple model in which each firm’s desired money balances in any period depend on that firm’s current transactions, current investment, and its planned future investment, as well as aggregate variables such as interest rates and common policy forecasts. Calculations based on our estimates suggest that only a very small fraction of the variability in the aggregate stock of money represents an endogenous response to autonomous changes in firms’ investment plans.Money demand, money supply, endogenous money, monetary neutrality

Can you see the beauty? Nonviolent communication as counter narrative in the lives of former prisoners

Little is known about individuals who studied nonviolence communication and mindfulness through the Freedom Project. This study looks at the lived experiences of three men, as well as members of the Freedom Project "community circle." A series of literary portraits was created using ethnographic data obtained through observations and in depth interviews. These portraits reveal the relationship between personal narrative and public discourse, as well as the ways that power and knowledge are produced and operate in and through both discourse of violence and discourse of nonviolence, and the discursive practices associated with dominant and resistant discourses. This research documents the process by which nonviolent communication and mindfulness became practices of freedom and facilitated a new ethic of self

‘I am a chthonic poet’: Fay Zwicky and the writing under the writing

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