Spectral Analysis of a Four Mode Cluster State

We theoretically evaluate the squeezed joint operators produced in a single optical parametric oscillator which generates quadripartite entangled outputs, as demonstrated experimentally by Pysher et al. \cite{pysher}[Phys. Rev. Lett. 107, 030505 (2011)]. Using a linearized fluctuation analysis we calculate the squeezing of the joint quadrature operators below threshold for a range of local oscillator phases and frequencies. These results add to the existing theoretical understanding of this potentially important system.Comment: 4 pages, 6 figure

Social work education, training and standards in the Asia-Pacific region

This article discusses the joint project between the International Association of Schools of Social Work (IASSW) and the International Federation of Social Workers (IFSW) to establish guidelines for the training and standard setting that elucidates what social work represents on a global level. While it is impossible to address all the issues that might be significant in such a large scope, attention is given to the challenges establishing global standards might encounter in a region as diverse as the Asia-Pacific

Facing Shadows: working with young people to coproduce a short film about depression

Background: IMPACT (Improving Mood with Psychoanalytic and Cognitive Therapies) is a multi-centre randomised controlled trial of three therapeutic interventions for the treatment of depression in young people. IMPACT- My Experience (IMPACT-ME), a qualitative research study, followed up a sub-sample of families involved in IMPACT to explore young people's experiences of therapy and depression. Members of the IMPACT-ME steering group, who brought their own experiences of depression and engaging with mental health services, were keen to find ways to provide information about depression and help-seeking beyond traditional academic audiences, specifically to other young people experiencing depression and wondering where to turn: their chosen medium was film. Here we describe and reflect on the four-day coproduction workshops in which researchers, young people and film-makers coproduced 'Facing Shadows', a short animation about depression and therapy (https://www.youtube.com/watch?v=LdmRPKUhNEY). Main body: We outline the process, focusing on the four-day creative, collaborative workshop in which young people shared their experiences, decided on the tone, tenor and message of the film, identified their primary audience and produced the bulk of the audio and visual material. The adults acted as facilitators: developing a creative, collaborative learning environment in which trusting relationships could flourish, as well as offering guidance, instruction, advice and support. To date the film has been viewed around 12,000 times on YouTube. The young people learned new skills, felt listened to and enjoyed the process. They produced a film which sends a hopeful message to other young people, '… that they are not alone'. Conclusion: We reflect on the creative participatory workshop approach which transformed the project from dissemination to an insightful learning experience for young people and researchers alike

Variation in seed set amongst populations of a rodent pollinated geophyte, Colchicum coloratum

AbstractAgricultural activities around the rural village of Nieuwoudtville in the Succulent Karoo region of South Africa has lead to the confinement of many plant and animal species to fragmented patches of relatively untransformed habitat. The geophyte Colchicum coloratum subsp. coloratum (Colchicaceae) was studied in five patches of variable size in and around Nieuwoudtville. This species is dependent on rodent visitation for seed production. The influence of variation in population size and plant size on seed set was investigated, as well as whether there is pollen limitation in this species. A pollen-supplementation experiment indicates that there is pollen limitation in C. coloratum, and that much of the natural seed set could be the result of pollinator-mediated selfing. The five populations appeared to have different rodent abundances, however, neither population size nor the abundance of rodents in the area have an effect on seed set. This suggests that the mutualism between C. colchicum and its rodent pollinators is robust, and that habitat fragmentation in Nieuwoudtville has not yet affected the seed production of this geophyte