Zeta potential in intact natural sandstones at elevated temperatures

Supporting data are included in PDF and CSV files; any additional data may be obtained from the corresponding author (e-mail: [email protected]). TOTAL is thanked for partial support of Jackson's Chair in Geological Fluid Mechanics and for supporting the activities of the TOTAL Laboratory for Reservoir Physics at Imperial College London where these experiments were conducted. The Editor thanks Andre Revil and Paul Glover for their assistance in evaluating this paper.Peer reviewedPublisher PD

Supporting novel home network management interfaces with Openflow and NOX

The Homework project has examined redesign of existing home network infrastructures to better support the needs and requirements of actual home users. Integrating results from several ethnographic studies, we have designed and built a home networking platform providing detailed per-flow measurement and management capabilities supporting several novel management interfaces. This demo specifically shows these new visualization and control interfaces, and describes the broader benefits of taking an integrated view of the networking infrastructure, realised through our router's augmented measurement and control APIs. Aspects of this work have been published: the Homework Database in Internet Management (IM) 2011 and implications of the ethnographic results are to appear at the SIGCOMM W-MUST workshop 2011. Separate, more detailed expositions of the interface elements and system performance and implications are currently under submission at other venues. A partial code release is already available and we anticipate fuller public beta release by Q4 2011

What enhances the formation of social bonds & facilitates better engagement & retention in an addiction service?

The study explored whether there are key skills that staff use to relate to service users which help with the formation of social bonds, which in turn leads to increased levels of service user engagement and retention. Data for the study was collected through a literature review, ethnographic observation, interviews and focus groups with staff and service users. The findings showed that staff are successful at engaging and retaining service users and it is their ability to form strong social bonds which is the key to its success. This is achieved through the philosophy of the project which is made up of three central tenets: a non-punitive approach, person-centred care and trauma informed care. The person-centred care approach facilitates the formation of a partnership between staff and service users in which they work together to achieve personalised recovery goals unique to each individual service user. The non-punitive approach stipulates that service users are not punished or judged for having a relapse, which results in the reduction of shame and the promotion of honesty. This non-punitive stance is experienced by service users as facilitative to their recovery, with some participants reporting that this approach was less evident in other models of addiction treatment. Trauma Informed Care allows service users to seek appropriate treatment for any possible underlying issues they may have, allowing them to fully engage in the service. The three interrelated strands of the philosophy produce an approach to the treatment of substance misuse that is considered to be unique and different to many mainstream addiction models and provides a platform for the formation of social bonds. There are some trade-offs as a result of adopting such a philosophy. It was discovered that staff place a large emphasis on trauma informed care; it is commendable that staff have committed to an approach which endeavours to identify people who have been exposed to trauma and are impacted by symptoms of Post-Traumatic Stress Disorder, as well as their recognition of the value of referral to appropriate treatment services. Given that there are a number of other confounding factors which may also be decisive, it is recommended that staff consider a balanced approach which remains open to other factors besides trauma such as the community reinforcement approach, motivational interviewing and the person centred approach. Secondly, the desire to unconditionally support service users while supportive and empowering has the possible drawback of fostering dependency and impeding autonomy. It is recommended that the balance between high levels of support and promoting independence continues to be a central element of the service approach to active discharge planning. Finally, the research identified a need to upskill in areas such as mental health and couple counselling to further support service users who may have dual diagnosis or who are experiencing relationship problems due to substance misuse

Obligations in the Shade: The Application of Fiduciary Directors’ Duties to Shadow Directors

This paper argues that shadow directors, as defined in English law, ought to owe the full range of directors’ duties, both fiduciary and non-fiduciary, enacted in the Companies Act 2006 (CA 2006), ss 171-177, to the relevant company under their influence. Following the enactment of the recent Small Business, Enterprise and Employment Act (SBEEA) 2015, these general duties are likely to apply to shadow directors, although there is still a case to be made as to why shadow directors should owe fiduciary duties to the relevant company. It is argued here that such a relationship is fiduciary in nature, but the current approach deployed in the English courts, based upon the application of Finn’s originally formulated ‘undertaking’ test alone, is inadequate. Given these inadequacies, it is proposed that the Canadian ‘power and discretion’ test be deployed alongside the ‘undertaking’ test, in order to provide a far more comprehensive justification for the application of fiduciary obligations to shadow directors. This position is supported by establishing a theoretical basis for the ‘power and discretion’ test, via Paul Miller’s ‘fiduciary powers theory’, as well as considering the application of such a test to shadow directors

Inexact Solves in Interpolatory Model Reduction

We investigate the use of inexact solves for interpolatory model reduction and consider associated perturbation effects on the underlying model reduction problem. We give bounds on system perturbations induced by inexact solves and relate this to termination criteria for iterative solution methods. We show that when a Petrov-Galerkin framework is employed for the inexact solves, the associated reduced order model is an exact interpolatory model for a nearby full-order system; thus demonstrating backward stability. We also give evidence that for \h2-optimal interpolation points, interpolatory model reduction is robust with respect to perturbations due to inexact solves. Finally, we demonstrate the effecitveness of direct use of inexact solves in optimal ${\mathcal H}_2$ approximation. The result is an effective model reduction strategy that is applicable in realistically large-scale settings.Comment: 42 pages, 5 figure

Supporting novel home network management interfaces with Openflow and NOX

The Homework project has examined redesign of existing home network infrastructures to better support the needs and requirements of actual home users. Integrating results from several ethnographic studies, we have designed and built a home networking platform providing detailed per-flow measurement and management capabilities supporting several novel management interfaces. This demo specifically shows these new visualization and control interfaces, and describes the broader benefits of taking an integrated view of the networking infrastructure, realised through our router's augmented measurement and control APIs. Aspects of this work have been published: the Homework Database in Internet Management (IM) 2011 and implications of the ethnographic results are to appear at the SIGCOMM W-MUST workshop 2011. Separate, more detailed expositions of the interface elements and system performance and implications are currently under submission at other venues. A partial code release is already available and we anticipate fuller public beta release by Q4 2011

Solvent content of protein crystals from diffraction intensities by Independent Component Analysis

An analysis of the protein content of several crystal forms of proteins has been performed. We apply a new numerical technique, the Independent Component Analysis (ICA), to determine the volume fraction of the asymmetric unit occupied by the protein. This technique requires only the crystallographic data of structure factors as input.Comment: 9 pages, 2 figures, 1 tabl