An estimate of the noise shielding on the fuselage resulting from installing a short duct around an advanced propeller

A simple barrier shielding model was used to estimate the amount of noise shielding on the fuselage that could result from installing a short duct around a wing-mounted advanced propeller. With the propeller located one-third of the duct length from the inlet, estimates for the maximum blade passing tone attenuation varied from 7 dB for a duct 0.25 propeller diameter long to 16.75 dB for a duct 1 diameter long. Attenuations for the higher harmonics would be even larger because of their shorter wavelengths relative to the duct length. These estimates show that the fuselage noise reduction potential of a ducted compared with an unducted propeller is significant. Even more reduction might occur if acoustic attenuation material were installed in the duct

Lean healthcare assets challenge FM performance measurement conventions

Purpose; To show how Lean Asset thinking can be applied to health care facilities using different measures to compare the estates contribution to the business of health care providers. The challenge to conventional wisdom matches that posed by Lean Production to Mass Manufacturing. Methodology; Data Envelope Analysis examines the income generated and patient occupied area as outputs from the Gross Area of a Trust’s estate. Findings; The approach yield strategic comparisons that conventional FM measures of cost per m2 hide. The annual cost of an excess estate is conservatively estimated at £600,000,000(in England alone) Research limitations/implications; Further research to understand the causes of the excess is needed and is in hand. Meanwhile the research illustrates the power of an alternative way of assessing facilities performance. Practical implications Have already been demonstrated in two trusts who have used such an analysis to define strategic estates targets, Originality. The author’s are not aware of the Lean Asset perspective previously being applied to healthcare facilities. The research shows the underlying fallacy of relying on cost per m2 as the primary measure of asset performance.</p

Lluvia ácida

Este trabajo trata de destacar la importancia de la educación ambiental en la minimización y mitigación de los efectos negativos de la lluvia ácida sobre los ecosistemas. Se describe en forma sintética los distintos equilibrios físico – químicos que originan esta contaminación a partir de las actividades antropogénicas.This work tries to emphasize the environmental education importance on the minimization and mitigation of the acid rain negative effects on the ecosystems. A synthesis of the different physico – chemical equilibria that originate this contamination starting from the human – related activities, is described.Fil: Quintar, S.Fil: González, P.Fil: Almeida, César Américo.Fil: Oliva González, S.Fil: Mallea, M

Development of a new scale to measure ambiguity tolerance in veterinary students

The ability to cope with ambiguity and feelings of uncertainty is an essential element of professional practice. Research with physicians has identified that intolerance of ambiguity or uncertainty is linked to stress and some authors have hypothesised that there could be an association between intolerance of ambiguity and burnout (e.g. Cooke et al 2013). We describe the adaptation of the TAMSAD (Tolerance of Ambiguity in Medical Students and Doctors) scale for use with veterinary students. Exploratory factor analysis supports a unidimensional structure for the Ambiguity tolerance construct. Although internal reliability of the 29 item TAMSAD scale is reasonable (α = 0.50), an alternative 27 item scale (drawn from the original 41 items used to develop TAMSAD) shows higher internal reliability for veterinary students (α = 0.67). We conclude that there is good evidence to support the validity of this latter TAVS (Tolerance of Ambiguity in Veterinary students) scale to study ambiguity tolerance in veterinary students

Dissecting Earnings Recognition Timeliness

We dissect the portion of stock price change of the fiscal year that is recognized in reported accounting earnings of the year. We call this portion earnings recognition timeliness (ERT). The emphasis in our dissection is on empirical identification of two fundamental precepts of financial accounting: (1) the matching principle, which is manifested in the recognition of expenses in the same period as the related benefits (i.e., sales revenue) accrue; and (2) recognition of expenses in the current period due to changes in expectations regarding earnings of future periods (we refer to these expenses as the expectations element of expenses). Although the expectations element has implicitly been at the core of much of the recent empirical literature on asymmetry in the earnings/return relation, it has not been explicitly identified. This recent literature is based on the premise that bad news about the future leads to more recognition of expenses in the current period (such as write‐downs) whereas good news about the future tends to have a much lesser effect on expenses of the current period; asymmetry in the expenses /return relation is captured implicitly via the observation of asymmetry in the earnings /return relation (i.e., asymmetry in ERT). Since the ERT reflects the relation between sales revenue and returns, matched expenses and returns, as well as the relation between the expectations element of expenses and returns, a focus on the expectations element may lead to sharper inferences. Our straightforward empirical procedure permits a focus on this element.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/100262/1/joar12018.pd

Report of Results of the Process Involving Former Workers of Hermosa Manufacturing who Benefited from the Emergency Fund of the Fair Labor Association

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide.  Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.FLA_FESPAD_Hermosa.pdf: 11 downloads, before Oct. 1, 2020

Exploring Browsing Behavior of Product Information in an M-commerce Application: a Transaction Log Analysis

This research aims to describe the information browsing and merchandise purchasing behaviors of the users in an M-commerce application. Data used in this research comes from the transaction logs of 290 heavy users in March 2015. We established the mapping between the request parameters in the log and the user information behavior to future analyze the pattern of user behavior. People are most concerned about the details of items, and actively share their favorite items and shops to others. The times of view is power-law distribution. We also find that the items which are viewed 9 times and are included in the submitted order are most likely to be bought. There is a positive correlation between the purchase of items and the numbers of browsing and sharing behaviors