Foundation Trusts: A Retrospective Review

There is limited research evidence on foundation trusts (FTs) and much of the available material is in the form of commentary or the regular reports from Monitor. Comparative research is made difficult through lack of a counter-factual and robust methods are required to overcome bias. Summary points from the literature and from some initial analysis of Monitor reports that we have undertaken for this review are given below. Future policy and research issues are highlighted in the main report.

CTENOLEPISMA LONGICAUDATA (ZYGENTOMA: LEPISMATIDAE) NEW TO BRITAIN

The silverfish Ctenolepisma longicaudata Escherich 1905 is reported for the first time in Britain, from Whitley Wood, Reading, Berkshire (VC22). This addition increases the number of British species of the order Zygentoma from two to three, all in the family Lepismatidae

Rheological chaos and elastic turbulence in a generalised Maxwell model for viscoelastic fluid flow

This work presents a new extension to a generalised nonlinear Maxwell model for the theoty of viscoelastic material flow. Nonlinear terms within this constitutive model are used to replicate many experimental phenomena such as shear-thickening/thinning, shear banding and dynamic stress responses found in complex materials such as polymers, Micelles, colloidal dispersions and even granular media. Numerical simulations of the stress tensor under spatially homogeneous plane Couette flow reveal a range of solutions from steady state to chaotic, chosen in part by the strength of nonlinear terms. Bifurcation and stability analysis reveal the onset of chaotic flow and are used to study the various transitions to chaos. A detailed phase space diagram is produced to categorise different dynamical regimes by determining the Lyapunov exponent under variation of two main model parameters. The route to chaos is identified primarily as a Hopf bifurcation.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Canadian Chicken Industry: Consumer Preferences, Industry Structure and Producer Benefits from Investment in Research and Advertising

The Canadian chicken industry has operated under supply management since the mid-1970s. Canadian consumer preferences for chicken have grown dramatically since then possibly in response to concerns about health and the levels of fat and cholesterol in red meats. However Canadian consumers are also looking for convenience with their food purchases. Canadians are buying their chicken in frozen further processed forms, fresh by cut without skin and bone and in a variety of other different ways reflecting their unique willingness to pay for various attributes. There is also an increasing trend for retailers and processors to brand the fresh chicken product sold through grocery stores (for example, Maple Leaf Prime). The preferences Canadian consumer have for various chicken products, the prices they are comfortable paying and the strategies followed by processors/retailers can directly affect the outcomes of industry wide strategies such as investment in generic advertising and research or the impact of international market changes such as border closures. This research is an initial attempt to quantify Canadian consumer preferences – for fresh product by type – for product by level of processing – for chicken product by cut - for fresh chicken by brand - to examine the impact of substitutability on a variety of market shocks. The various different disaggregations of Canadian chicken consumption are used in a number of simulation models to illustrate how important preferences are to producer returns when there are market shocks. If Canadians found all chicken products available in the grocery store to be perfectly substitutable then previous policy analysis assuming chicken is one homogeneous product would be sufficient for industry policy analysis purposes. If Canadians view all the different chicken products as imperfectly substitutable and given that various chicken products are produced in relatively fixed proportions (white and dark meat, for example) further understanding of how consumers make their purchase decisions could enhance the industries ability to predict outcomes. For example, border closing to Canadian exports ( as a result of an Avian influenza outbreak, for example) would result in a significant increase in the dark meat products available for sale through Canadian grocery stores. The results presented in this research could provide a clue as to how much dark meat prices might decline while white meat prices might remain unaffected. The results reported suggest that at the consumer level, chicken fresh and frozen products are not perceived to be perfect substitutes, within a narrow category such as fresh chicken breasts, they are not perceived as even close substitutes, within the fresh category branded products such as those developed by Lilydale and Maple Leaf are not perceived as perfect substitutes. As well, an initial look at the demand for individual chicken products by household suggests that there is far from a common buying pattern across Canadian households, even within a single province. The results also suggest that health and convenience attributes are driving Canadian consumer preferences. Simulation results highlight the fact that pricing strategies followed by major processors/retailers within Canada can influence the returns to generic advertising and research. Further research could provide additional robust estimates of the chicken product substitutability existing in the Canadian market and an increased understanding of the market characteristics currently operating. The results presented here suggest that further work in this area is important for the chicken industry to pursue.consumer behaviour, chicken consumption, differentiated products, Consumer/Household Economics, Demand and Price Analysis, Food Consumption/Nutrition/Food Safety, Marketing, D12, Q11, Q18,

‘If I feel like this, how does the child feel?’ Child protection workers, supervision, management and organisational responses to parental violence

This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Social Work Practice, on 14 September 2015, available online at:http://dx.doi.org/10.1080/02650533.2015.1073145 © 2015 GAPS.This study analysed workers’ experiences of supervision following interactions with hostile and intimidating parents. This analysis examined management and organisational responses to worker stress, and assessed the adequacy of support that workers received. An online survey was designed to collect data on workers’ experiences and free text responses were qualitatively analysed for references to the supervision they received in response to working with parents. 590 participants responded to the survey. 402 were qualified social workers, and 423 worked in child protection. Participants had experienced a range of violent behaviour from parents. The overwhelming theme in responses was the lack of support and supervision workers received, often in stressful and frightening circumstances. Approximately one quarter of participants only used organisational procedures, guidelines or protocols on dealing with hostile parents. Workers reported that mismanaged parental hostility affected their practice and the quality of protection that children received. The violence experienced had a significant negative impact on their personal and professional lives. Organisational responses in the form of supervision and education were often inadequate and resulted in children receiving reduced quality of protection. Recommendations for policy and practice change are discussed, with the aim of caring for workers and the children they protectPeer reviewedFinal Accepted Versio

Thermodynamic and mesoscopic modeling of tumbling nematics, of shear-thickening fluids and of stick-slip-like flow behavior

Shear thickening, i.e. the increase of the viscosity with increasing shear rate as it occurs in dense colloidal dispersions and polymeric fluids is an intriguing phenomenon with a considerable potential for technical applications. The theoretical description of this phenomenon is patterned after the thermodynamic and mesoscopic modeling of the orientational dynamics and the flow behavior of liquid crystals in the isotropic and nematic phases, where the theoretical basis is well-established. Even there the solutions of the relevant equations recently yielded surprises: not only stable flow alignment and a periodic behavior (tumbling) are found as response to an imposed stationary shear flow but also irregular and chaotic dynamics occurs for certain parameter ranges. To treat shear-thickening fluids, a non-linear Maxwell model equation for the symmetric traceless part of the stress tensor has been proposed in analogy to the equations obeyed by the alignment tensor of nematics. The fluid-solid transition is formally analogous to the isotropic-nematic transition. In addition to shear-thickening and shear-thinning fluids, substances with yield stress can be modeled. Furthermore, periodic stick-slip-like motions and also chaotic behavior are found. In the latter cases, the instantaneous entropy production is not always positive. Yet it is comforting that its long-time average is in accord with the second law

Flow Properties Inferred from Generalized Maxwell Models

The generalized Maxwell model is formulated as a nonlinear relaxation equation for the symmetric traceless stress tensor. The relaxation term of the equation involves the derivative of a potential function with respect to the stress tensor. Two special cases for this potential referred to as “isotropic” and “anisotropic” are considered. In the first case, the potential solely depends on the second scalar invariant, viz. the norm of the tensor. In the second case, also a dependence on the third scalar invariant, essentially the determinant, is taken into account in analogy to the Landau-de Gennes potential of nematic liquid crystals. Rheological consequences of the model are presented for a plane Couette flow with an imposed shear rate. The non-Newtonian viscosity and the normal stress differences are analyzed for stationary solutions. The dependence on the model parameters is discussed in detail. In particular, the occurrence of a shear-thickening behaviour is studied. The possibility to describe substances with yield stress and the existence of non-stationary, stick-slip-like solutions are pointed out. The extension of the model to magneto-rheological fluids is indicated.DFG, SPP 1104, Kolloidale magnetische Flüssigkeiten: Grundlagen, Entwicklung und Anwendung neuartiger FerrofluideDFG, SFB 448, Mesoskopisch strukturierte Verbundsystem

Converged vs. Dedicated IPSec Encryption Testing in Gigabit Ethernet Networks

In January, 2005, Safenet, Inc. contacted the networking group to investigate the possibility of using our students for the purpose of comparing the performance of dedicated encryption device to an integrated encrypting device. The tests would also include a performance comparison between Data Link Layer (Layer 2) devices and Network Layer (Layer 3) devices. It was decided that the tests would consist of throughput, frame loss, and network latency. Two network topologies were used for the experiments: gigabit Ethernet and SONET OC-48. The equipment to be tested was Safenet’s High Assurance 4000 Gateway (HA4000) for the gigabit Ethernet topology and the SafeNet SSE Encryptor for the SONET topology. The Cisco Catalyst 6509 equipped with the Cisco VPN Accelerator was used for both topologies. An IXIA400T was used to generate the traffic for the performance tests. The procedure was straight forward. Baselines for each of the criteria (throughput, frame loss, and latency) by connecting the Cisco 6509’s back to back for each of the topologies to be tested. Once the baselines were established, the performance tests were performed for each of the encryption technologies and data was collected for each of the criteria