External support for collaborative problem solving in a simulated provider/patient medication scheduling task.

Taking medication requires developing plans to accomplish the activity. This planning challenges older adults because of age-related cognitive limits and inadequate collaboration with health providers. The authors investigated whether an external aid (medtable) supports collaborative planning in the context of a simulated patient/provider task in which pairs of older adults worked together to create medication schedules. Experiment 1 compared pairs who used the medtable, blank paper (unstructured aid), or no aid to create schedules varying in complexity of medication constraints (number of medications and medication co-occurrence restrictions) and patient constraints (available times during the day to take medication). Both aids increased problem-solving accuracy and efficiency (time per unit accuracy) compared to the no-aid condition, primarily for more complex schedules. However, benefits were similar for the two aids. In Experiment 2, a redesigned medtable increased problem-solving accuracy and efficiency compared to blank paper. Both aids presumably supported problem solving by providing a jointly visible workspace for developing schedules. The medtable may be more effective because it externalizes constraints (relationships between medication and patient information), so that participants can more easily organize information. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Discovering the moments of movement in filial therapy: A single case qualitative study.

This study examines the process of change in filial therapy, a type of play therapy, which engages parents as therapeutic agents in working with troubled children. Outcome studies have supported the efficacy of this approach in building parent-child relationships, reducing parenting stress, and reducing child behavior problems. The purpose of this qualitative study is to examine the process in order to understand how these changes occur. The researchers compare the viewpoints of the therapist, the parents, and an independent observer, noting the points in therapy which are deemed facilitative or inhibitive of change. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reframing the ‘gap market’: lessons and implications from Cape Town’s gap market housing initiative

In South Africa, households which earn too much to qualify for South Africa’s impressive capital subsidy programme and too little to access mortgage finance are referred to as the gap market. As the gap continues to grow, address is of increasing policy priority, a focus of local and national efforts. However, this paper argues that the gap market has been misunderstood and inappropriately framed in South African housing policy discourse. The case study of the City of Cape Town’s ‘Sale of Serviced Erven for GAP Market Purposes’ demonstrates the assumption that the gap market is a functional housing submarket which can be targeted uniformly. This paper argues that the gap market is instead a derivative of South Africa’s housing policy history and premised on the problematic ‘ownership imperative’. While the gap market is a useful conceptual tool to be understood within its historic trajectory, it should be discarded from policy design processes and replaced with more useful categories driven by analysis of the households and dynamics which comprise the market. This argument is relevant for all countries which seek to address gaps in their housing markets.     

Tough package, strong taste: The influence of packaging design on taste impressions and product evaluations

This study examines the influence of packaging design on taste impressions. Building forth on research addressing transfer effects of symbolic associations from one sense to another, in this study it was studied if, and to what extent, potency-related associations portrayed by shape curvature and color saturation of yoghurt packages transfer to subsequent taste experiences. Furthermore, the influence of participants’ sensitivity to design was taken into account. Data were collected during a field study in the entrance hall of a large supermarket. Results indicate that associations portrayed by shape curvature in particular transfer to taste experiences, but that these effects are most pronounced for participants with a sensitivity to design. In addition, the findings presented indicate that shape curvature and color saturation may impact more general product evaluations and price expectations as well.     

A structured approach to control of Salmonella Dublin in 10 Danish dairy herds based on risk scoring and test-and-manage procedures

The aim of this study was to describe a structured approach to effectively reduce Salmonella Dublin prevalence in infected dairy herds based on a step-wise procedure. Furthermore, the aim was to describe tools for management and monitoring, and to report on development in prevalence among young stock and adult cattle in 10 case herds that were followed for more than three years.The five steps in the structured approach were: 1) risk scoring to determine transmission routes within the herd and into the herd; 2) determining a plan of action; 3) performing management changes to close important routes of infection; 4) interpretation of repeated testing of individual animals to detect high-risk animals for special hygienic management or culling; and 5) diagnostic testing of different age groups and bulk tank milk to evaluate progress of control over time.Serology, true prevalence estimates and changes in herd classification in the Danish surveillance programme for Salmonella Dublin were used to assess the progress in the herds during and after the control period. Effective control of Salmonella Dublin was achieved in all participating herds through management that focused on closing infection routes mainly in the calving areas and the young calf areas of the herds. It took on average three years to control the infection in the case herds. Bulk tank milk recordings from the four following years indicated that most of the herds might have eradicated the infection.     

Microwave-electrochemical formation of colloidal zinc oxide at fluorine doped tin oxide electrodes

Colloidal ZnO is obtained during microwave-enhanced electrochemical deposition experiments from an aqueous solution containing 0.1 M Zn(NO₃)₂ and 0.02 M H₂O₂ via repetitive negative going potential cycles from 0.3 to −0.8 V vs. SCE. The effects of temperature and temperature gradients on ZnO electro-formation at fluorine doped tin oxide (FTO) electrodes are investigated with both a conventional thermostated bath system (isothermal) and an in situ microwave electrochemistry system (non-isothermal). Mainly electrodeposition of ZnO is observed in uniformly heated stagnant solution and predominantly the electro-formation of ZnO colloid is observed in the presence of microwave-induced temperature gradients in a flowing solution. For the ZnO colloid prepared via microwave activation, SAXS data suggests an average particle radius of ca. 18 nm. The increase of ZnO nanoparticle concentration during repetitive potential scans is followed by photoluminescence spectroscopy. A possible mechanism for ZnO colloid formation during electrochemical reduction of H₂O₂ is suggested.     

Mapping in Hackney Wick and Fish Island: Observation is Proposition

Hackney Wick and Fish Island, adjacent to the London 2012 Queen Elizabeth Olympic Park, has developed a special character over time, accommodating 700 artists' and other creatives' studios in old warehouses. The under-designed ‘scarce’ quality of the public realm contrasts with the highly designed spaces of the Olympic Park. Liza Fior describes how muf has developed an urban strategy that could help assimilate the two sites and cater for the greater expected densities in housing, while retaining the under-determined character of the existing area.     

Modified carbon nanoparticle-chitosan film electrodes: Physisorption versus chemisorption

Surface functionalised carbon nanoparticles of ca. 8 nm diameter co-assemble with chitosan into stable thin film electrodes at glassy carbon surfaces. Robust electrodes for application in sensing or electrocatalysis are obtained in a simple solvent evaporation process. The ratio of chitosan binder backbone to carbon nanoparticle conductor determines the properties of the resulting films. Chitosan (a poly-d-glucosamine) has a dual effect (i) as the binder for the mesoporous carbon composite structure and (ii) as binding site for redox active probes. Physisorption due to the positively charged ammonium group (pK_A ≈ 6.5) occurs, for example, with anionic indigo carmine (a reversible 2e⁻-2H⁺ reduction system in aqueous media). Chemisorption at the amine functionalities is demonstrated with 2-bromo-methyl-anthraquinone in acetonitrile (resulting in a reversible 2e⁻-2H⁺ anthraquinone reduction system in aqueous media). Redox processes within the carbon nanoparticle-chitosan films are studied and at sufficiently high scan rates diffusion of protons (buffer concentration depended) is shown to be rate limiting. The chemisorption process provides a much more stable interfacial redox system with a characteristic and stable pH response over a pH 2-12 range. Chemisorption and physisorption can be employed simultaneously in a complementary binding process.     

HB tag modules for PCR-based gene tagging and tandem affinity purification in Saccharomyces cerevisiae

We have recently developed the HB tag as a useful tool for tandem-affinity purification under native as well as fully denaturing conditions. The HB tag and its derivatives consist of a hexahistidine tag and a bacterially-derived in vivo biotinylation signal peptide, which support sequential purification by Ni2+ -chelate chromatography and binding to immobilized streptavidin. To facilitate tagging of budding yeast proteins with HB tags, we have created a series of plasmids with various selectable markers. These plasmids allow single-step PCR-based tagging and expression under control of the endogenous promoters or the inducible GAL1 promoter. HB tagging of several budding yeast ORFs demonstrated efficient biotinylation of the HB tag in vivo by endogenous yeast biotin ligases. No adverse effects of the HB tag on protein function were observed. The HB tagging plasmids presented here are related to previously reported epitope-tagging plasmids, allowing PCR-based tagging with the same locus-specific primer sets that are used for other widely used epitope-tagging strategies. The Sequences for the described plasmids were submitted to GenBank under Accession Numbers DQ407918-pFA6a-HBH-kanMX6 DQ407927-pFA6a-RGS18H-kanMX6 DQ407919-pFA6a-HBH-hphMX4 DQ407928-pFA6a-RGS18H-hphMX4 DQ407920-pFA6a-HBH-TRP1 DQ407929-pFA6a-RGS18H-TRP1 DQ407921-pFA6a-HTB-kanMX6 DQ407930-pFA6a-kanMX6-PGAL1-HBH DQ407922-pFA6a-HTB-hphMX4 DQ407931-pFA6a-TRP1-PGAL1-HBH DQ407923-pFA6a-HTB-TRP1 DQ407924-pFA6a-BIO-kanMX6 DQ407925-pFA6a-BIO-hphMX4 DQ407926-pFA6a-BIO-TRP1.