Environmental noise control during its transmission phase to protect buildings. Design model for acoustic barriers based on arrays of isolated scatterers

A new generation of acoustic barriers is being introduced into the noise control market. These barriers, based on arrays of isolated scatterers, present interesting properties to be used in cities to reduce the transmitted transport noise affecting buildings. Among them, both aesthetic and continuity factors of the urban landscape may be mentioned. This new kind of barrier is technologically advanced and acoustically competitive with respect to the current ones formed by continuous rigid materials. To design these barriers whilst taking into account their inherent acoustic complexity, we present an overlapping numerical model here that enables us to split the real three-dimensional problem into two twodimensional ones, allowing both the reduction of the computational cost and the separate analysis of each one of the noise control mechanisms involved. We analyse different cases, checking the numerical simulations with accurate experimental results.This work is supported by MEC (Spanish Government) under grant No. MTM2012-36740-C02-02.Castiñeira Ibáñez, S.; Rubio Michavila, C.; Sánchez Pérez, JV. (2015). Environmental noise control during its transmission phase to protect buildings. Design model for acoustic barriers based on arrays of isolated scatterers. Building and Environment. 93:179-185. https://doi.org/10.1016/j.buildenv.2015.07.002S1791859

Accessing hospital packaged foods and beverages : the importance of a seated posture when eating

Background: Hospitalised and community dwelling older people (65 years and over), have difficulties opening food and beverage items such as cheese portions and tetra packs served in public hospitals. Previously, the role of hand strength on successful pack opening has been explored in a seated position. However, as many people in hospital eat in bed, this laboratory study examined the differences between participants opening a selection of products both in a hospital bed and a chair. Methods: This study used a qualitative method (satisfaction) and quantitative methods (grip and pinch strength, dexterity, time and attempts) in two conditions (bed; chair) with a sample of well older community dwelling adults (n=34). Packs tested included foil sealed thickened pudding, foil sealed thickened water, tetra pack, dessert, custard, jam, cereal, honey sachet and cheese portions. Results: Honey sachets, cheese portions, foil sealed thickened pudding and tetra packs were the most difficult packs to open, with 15% of cheese portions unable to be opened in either the bed or chair posture. While grip strength was consistent for each posture, pinch grips and dexterity were adversely affected by the bed posture. Lying in a hospital bed required greater pinch strength and dexterity to open packs. Conclusions: Eating in a seated position while in hospital has been shown to improve intake. This study demonstrates that eating in a seated posture is also advantageous for opening food and beverage packs used in NSW hospital food service and supports the notion that patients should sit to eat in hospital

Interoperability optimisation for shared equity housing model development and FTB homeownership in the UK

Purpose – This paper assessed financial interoperability implications associated with First Time Buyers (FTB) in housing development and the role of the Community Land Trust Shared Equity Housing Model (CLT SEHM). Design/Methodology/Approach – The Interoperability optimisation process adopted by this study involved triangulated findings from literature, semi-structured interviews and questionnaire surveys. The text analysis of interview responses was actualised with Nvivo 9.0. This process informed the validation of themes through a questionnaire survey (purposive sampling), of which findings were subsequently analysed with statistical methods including binary logistic regression to validate interoperability rational and implications. Findings – The study identified positive financial interoperability outcomes for a successful synergy between the CLT SEHM and FTBs. From the analysis, there were sustainable results for average income multiple and property transfer/resale value for the CLT SEHM compared to conventional models. However, for the most at risk FTB groups, recommendations included increased concessions for CLT SEHM developments to incentivise bespoke rent purchase hybrid schemes. Originality/value – This research provided a good starting point for achieving improved level of efficiency necessary for the introduction of emerging/renewed alternative housing models into mainstream operational capabilities in housing and local development policies. Keywords – UK Housing Development, First Time Buyers (FTB), Interoperability, Community Land Trust, Shared Equity Housing Model, Binary Logistic Regression mode