Quantum Subsystems: Exploring the Complementarity of Quantum Privacy and Error Correction

This paper addresses and expands on the contents of the recent Letter [Phys. Rev. Lett. 111, 030502 (2013)] discussing private quantum subsystems. Here we prove several previously presented results, including a condition for a given random unitary channel to not have a private subspace (although this does not mean that private communication cannot occur, as was previously demonstrated via private subsystems) and algebraic conditions that characterize when a general quantum subsystem or subspace code is private for a quantum channel. These conditions can be regarded as the private analogue of the Knill-Laflamme conditions for quantum error correction, and we explore how the conditions simplify in some special cases. The bridge between quantum cryptography and quantum error correction provided by complementary quantum channels motivates the study of a new, more general definition of quantum error correcting code, and we initiate this study here. We also consider the concept of complementarity for the general notion of private quantum subsystem

Support workers as agents for health behaviour change: An Australian study of the perceptions of clients with complex needs, support workers and care coordinators

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.An expanding aging population has placed increased demands on health care resources in many countries. Enhancing community aged care support workers’ role to support greater client self-management and reablement is therefore timely. This article presents perceptions of the impact of an Australian practice change initiative designed to enhance knowledge, skills, and confidence of support workers to support behavior change in clients with complex health care needs. A comprehensive training program was delivered in 2013. Methods included thematic analysis of interviews with clients, focus groups with support workers and coordinators, and collection of case studies of client/support worker behavior change interactions. Client, support worker, and coordinator responses were highly positive, reporting improvement in the quality of interactions with clients, client health outcomes, care coordination, communication, and teamwork. Mental health literacy remained the biggest knowledge gap. This research showed that support workers are ideally placed to be more actively involved in motivating clients to achieve behavior change goals

The association between previous running related injuries and isometric muscle strength among recreational and novice runners.

Running can cause considerable health and economic burdens, with a reported injury incidence of between 18.2 to 92.4%. Strength is a factor that has widely been linked to injury, however its associations with injury among this population require further investigation. To date, studies have mainly compared the muscular strength of currently injured and uninjured runners. This study endeavours to investigate differences in isometric muscle strength among healthy runners with and without previous RRIs in the past 2 years

The association between previous running related injuries and isometric muscle strength among recreational and novice runners.

Running has many health benefits, but injuries associated with running can result in considerable health and economic burdens. This is particularly important given the reported injury incidence of between 18.2 to 92.4% Previous injury is the primary risk factor related to running injuries. As injured athletes often display deficits in neuromuscular strength, and these weaknesses may be evident at the time of return to sport it is thought that persistent residual weakness following injury may predispose an athlete to subsequent injury. To date, studies have mainly compared the neuromuscular strength of currently injured and uninjured runners. More information is needed to explore potential differences in strength among healthy runners with a history of injury, which may allow clinicians to address weaknesses and ultimately better direct treatment

Running related Injuries of Irish runners

The popularity of recreational running continues to grow nationally. Previous international research has demonstrated a very high risk of running related injuries (RRIs) in recreational runners. These injuries pose a barrier to continued training, as well as to the physical and mental health benefits associated with running. Currently, there is a paucity of epidemiological information on Irish recreational runners. Therefore, the aim of this study is to gain an understanding of the prevalence, location, type and severity of RRI’s in recreational runners in Ireland

Der inferenzbasierte Ansatz bei Zwangsstörungen

Obwohl die kognitive Verhaltenstherapie, häufig in der Form der Exposition und Reaktionsverhinderung, das in der Behandlung der Zwangsstörung am weitesten verbreitete Behandlungsverfahren darstellt, profitieren Betroffene mit bestimmten Subtypen der Zwangserkrankung (z.B. überwertigen Ideen oder ich-syntonen Zwangsgedanken) davon nur unzureichend oder gar nicht. Aufgrund der begrenzten Erfolge von auf verhaltenstherapeutischen oder kognitiv-verhaltenstherapeutischen Modellen basierenden Verfahren hat sich die Forschung vermehrt ausschließlich kognitiven Theorien und Behandlungsmodellen zugewandt. Der inferenzbasierte Ansatz zur Behandlung der Zwangsstörung geht davon aus, dass zwangstypische Kognitionen und Bewertungen von vorausgehenden Zweifeln und Inferenzen herrühren. Dieser Ansatz konzentriert sich auf die fehlerhaften Denkprozesse, die dem zwanghaften Zweifeln zugrunde liegen, welches Zwangsverhalten auslöst. Die vorliegende Arbeit fasst den gegenwärtigen Stand des inferenzbasierten Modells und die es stützenden empirischen Befunde zusammen

Alcohol intoxication progressively impairs drivers' capacity to detect important environmental stimuli

Rationale Alcohol intoxication impairs driving skills, leading to an increased frequency of accidents and crash fatalities. Inebriation may specifically impair environmental vigilance, reducing the driver's capacity for attention to stimuli that are relevant to successful navigation. Objectives We examined the separate and interactive effects of breath alcohol concentration (BrAC) and simulated driving scenario on the capacity to correctly identify visual stimuli embedded in the environment. Methods Ten healthy young adult drivers (6 males; 4 females) each performed 4 driving scenarios at each of 3 steady breath alcohol concentration levels (0, 60 and 100 mg/dl). Scenarios were based on speed or distance keeping while navigating a rural 2-lane road in daytime or nighttime conditions. Drivers pressed a button on the steering wheel corresponding to the direction of an arrow (up or down) which appeared briefly on road signs embedded in the environment, either overhead or on the roadside. Results Increasing level of BrAC and subjective scenario difficulty manifested significant, separate, but not interactive influences in association with the number of arrows correctly identified. Significant impairments could be detected at a level of BrAC below the current American limit for legal operation of a motor vehicle. Conclusions Environmental vigilance is subject to impairment by either/both alcohol intoxication and driving conditions

A sensing platform for physiological and contextual feedback to tennis athletes

In this paper we describe our work on creating a multi-modal sensing platform for providing feedback to tennis coaches and players. The platform includes a fixed installation around a tennis court consisting of a video camera network and a localisation system as well as wearable sensing technology deployed to individual athletes. We describe the various components of this platform and explain how we can capture synchronised multi-modal sensor data streams for games or training sessions. We then describe the content-based retrieval system we are building to facilitate the development of novel coaching tools. We provide some examples of the queries that the system can support, where these queries are chosen to be suitably expressive so as to reflect a coach's complex information needs regarding tennis-related performance factors