Loss tolerance in one-way quantum computation via counterfactual error correction

We introduce a scheme for fault tolerantly dealing with losses (or other "leakage" errors) in cluster state computation that can tolerate up to 50% qubit loss. This is achieved passively using an adaptive strategy of measurement - no coherent measurements or coherent correction is required. Since the scheme relies on inferring information about what would have been the outcome of a measurement had one been able to carry it out, we call this "counterfactual" error correction.Comment: Published version - much revised and with a new title. Here we now focus solely on the general aspects of the protocol - a much expanded and improved discussion of its application in linear optical quantum computation can now be found in quant-ph/070204

The coset D-branes of SU(n)

Using a nested coset construction a collection of D-branes that appear to generate all the K-theory charges of string theory on SU(n) are constructed and their charges are determined.Comment: 12 page

Singing the blues : a literature review of the effects of music on postnatal depression

Postnatal depression, also known as postpartum depression, is not a new condition, but has been well documented for decades, as have the treatments. The most common treatments for postnatal depression include pharmacological, psychological, psychosocial, relaxation and other holistic methods and may be used individually or in various combinations. Recently, the western world has come to acknowledge and use more traditional or complementary and alternative styles of therapy. These specifically include massage, meditation and yoga, and music therapy. Music has become more popular as more research defines its power over the body, both physically and mentally. It is anticipated with the right information any woman, no matter her location, could use this powerful tool to alleviate the symptoms of postnatal depression. This would also save further distress of separation from family and other support networks as well as reduce financial burdens when seeking care. A literature review was conducted to determine if this relatively new intervention in western society has been used and to determine what the outcomes have been. Currently, no research has been conducted which relates to the use of music as an intervention for women with postnatal depression, particularly those in rural areas

To lead or be led

Ongoing challenges for nurses working in the primary care/community setting include professional development external policy which esteems productivity greater than the quality of care and changes in the economy which have shaped the community at large

The critical discourse analysis paradox : a brief research reflection

Critical Discourse Analysis (CDA) is a means of criticising or critiquing the social order of power, inequality and hegemony in language. Within a doctoral study CDA was used to determine if social power, dominance, and inequality are enacted and reproduced through the text and talk of key participants. A reflection of the researcher experiences is provided as the results were analysed and prepared for publication. The discussion highlights there are other also discourses of power and hegemony which may impact researchers and authors themselves as they report and discuss discourse which marginalises those individuals and groups for whom the research is being conducted. As researchers and academics attempt to articulate and discuss discourse which marginalise and stigmatise, they need to acknowledge and recognise the discourse, which impacts their own ability to advocate for change, adjustment and empowerment