Mixed Signals in Pulsar Timing Arrays - Discerning Red Spin Noise from Gravitational Waves

The detection of gravitational waves (GWs) with ground-based interferometers like the Laser Interferometer Gravitational Wave Observatory (LIGO) revolutionized our view of the Universe. Pulsar timing arrays (PTAs) like observed by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) will provide the community with an avenue for exploring the GW spectrum beyond what is capable with ground-based interferometers. Unlike LIGO, pulsars do not exist in an ideal environment where clever engineering can mitigate sources of noise. With that being said, many of the dominant sources of noise in PTAs have been well modeled within NANOGrav. The impact of red spin noise (RSN), which may result from rotational instabilities in the neutron star itself, is particularly problematic because its effect on a PTA\u27s timing residuals could resemble the effects of a gravitational wave background (GWB). In this work, we simulate a PTA where each pulsar suffers from varying amplitudes of RSN and also has an underlying GWB. We recover the parameters describing the RSN to better characterize how a GWB of varying amplitudes biases our recovery efforts. We find regions of parameter space where the GWB and the RSN heavily bias each other. In these regions, RSN could masquerade as a GWB, or vice versa. However, we also find regions of parameter space that do not result in a biased recovery, even in the case of a large GWB amplitude. Finally, we define the problematic regions of parameter space and draw conclusions about recovery efforts in today\u27s operational PTAs

La memoria colectiva de la Guerra Civil Española a través del papel infantil en el cine: Un estudio de caso

This essay aims to explore the formation of the collective memory of the Spanish Civil War through cinematographic representation. The importance held in the reconstruction of the memory of the war reaches beyond its psychological benefit as a therapy to cope with past events. Nonetheless, the cinematographic medium serves as a propaganda tool to assimilate political messages into society.El objetivo de este ensayo es examinar la formación de la memoria colectiva de la Guerra Civil Española a través de su representación cinematográfica. La importancia de la construcción de la memoria de la guerra sobrepasa la contribución psicológica que existe dentro de ella por ser un medio terapéutico para enfrentarse al propio hecho en sí. Sin embargo, el medio cinematográfico sirve coma una herramienta propagandista para asimilar mensajes políticos en la sociedad

A Disease Register for ME/CFS: Report of a Pilot Study.

BACKGROUND: The ME/CFS Disease Register is one of six subprojects within the National ME/CFS Observatory, a research programme funded by the Big Lottery Fund and sponsored by Action for ME. A pilot study in East Anglia, East Yorkshire, and London aimed to address the problem of identifying representative groups of subjects for research, in order to be able to draw conclusions applicable to the whole ME/CFS population.While not aiming for comprehensive population coverage, this pilot register sought to recruit participants with ME/CFS in an unbiased way from a large population base. Those recruited are constituting a cohort for long-term follow-up to shed light on prognosis, and a sampling frame for other studies. FINDINGS: Patients with unidentified chronic fatigue were identified in GP databases using a READ-code based algorithm, and conformity to certain case definitions for ME/CFS determined. 29 practices, covering a population aged 18 to 64 of 143,153, participated.510 patients with unexplained chronic fatigue were identified. 265 of these conformed to one or more case definitions. 216 were invited to join the register; 160 agreed. 96.9% of participants conformed to the CDC 1994 (Fukuda) definition; the Canadian definition defined more precisely a subset of these. The addition of an epidemiological case definition increased case ascertainment by approximately 4%. A small-scale study in a specialist referral service in East Anglia was also undertaken.There was little difference in pattern of conformity to case definitions, age or sex among disease register participants compared with subjects in a parallel epidemiological study who declined to participate.One-year follow-up of 50 subjects showed little change in pain or fatigue scores. There were some changes in conformity to case definitions. CONCLUSIONS: Objective evaluation indicated that the aim of recruiting participants with ME/CFS to a Disease Register had been fulfilled, and confirmed the feasibility of our approach to case identification, data processing, transmission, storage, and analysis. Future developments should include expansion of the ME/CFS Register and its linkage to a tissue sample bank and post mortem tissue archive, to facilitate support for further research studies

Acquired right ventricular outflow tract obstruction

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33562/1/0000063.pd

The functional status and well being of people with myalgic encephalomyelitis/chronic fatigue syndrome and their carers

RIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are.Abstract Background Diagnosis of myalgic encephalomyelitis/chronic fatigue syndrome or ME/CFS is largely based on clinical history, and exclusion of identifiable causes of chronic fatigue. Characterization of cases and the impact of interventions have been limited due to clinical heterogeneity and a lack of reliable biomarkers for diagnosis and outcome measures. People with ME/CFS (PWME) often report high levels of disability, which are difficult to measure objectively. The well being of family members and those who care for PWME are also likely to be affected. This study aimed to investigate the functional status and well being of PWME and their lay carers, and to compare them with people with other chronic conditions. Methods We used a cross sectional design to study 170 people aged between 18 and 64 years with well characterized ME/CFS, and 44 carers, using SF-36 v2™. Mean physical and mental domains scores (scales and component summaries) were calculated and compared internally and externally with reference standards for the general population and for population groups with 10 chronic diseases. Results SF-36 scores in PWME were significantly reduced, especially within the physical domain (mean norm-based Physical Component Summary (PCS) score = 26.8), but also within the mental domain (mean norm-based score for Mental Component Summary (MCS) = 34.1). The lowest and highest scale scores were for "Role-Physical" (mean = 25.4) and "Mental Health" (mean = 36.7) respectively. All scores were in general lower than those for the general population and diseased-specific norms for other diseases. Carers of those with ME/CFS tended to have low scores in relation to population norms, particularly within the mental domain (mean = 45.4). Conclusions ME/CFS is disabling and has a greater impact on functional status and well being than other chronic diseases such as cancer. The emotional burden of ME/CFS is felt by lay carers as well as by people with ME/CFS. We suggest the use of generic instruments such as SF-36, in combination of other objective outcome measurements, to describe patients and assess treatments.Published versio

Community Action Research in Disability (CARD): An Inclusive Research Programme in Uganda

The ideology of Emancipatory Disability Research (EDR) reflected in the phrase ‘Nothing about us without us’, was first put forward in the 1990s. Although it aimed to place research control in the hands of the ‘researched’, i.e., people with disability, this rarely happens even today, 25 years later. The Community Action Research on Disability (CARD) programme in Uganda embraced and modified the EDR approach, recognising the need for including people with disability in the research process from concept to outcome, and nurturing participation and collaboration between all the stakeholders in achieving action-based research. The research teams always included people with disability and staff from Disabled People’s Organisations (DPOs) as well as academics and service providers. It endeavoured to generate and carry out research around issues that mattered to people with disability and their families. Leadership roles were assigned by team members. The objectives of the CARD programme were: (1) to fund teams to carry out action-based research on disability in Uganda; (2) to develop research and administrative capacity to manage the initiative within the academic registrar’s office at Kyambogo University; (3) to incorporate new knowledge generated from the studies into the ongoing local community-based rehabilitation and special education courses; and, (4) to ensure wide dissemination of research findings to all stakeholder groups. CARD ran for 5 years, commissioning 21 action research studies in the field of disability and community-based services. This paper describes the process, presents the 12 completed studies, examines the extent to which the objectives were achieved and evaluates the experiences of the participating research teams, particularly in relation to the inclusion of its members with disability. It concludes with recommendations for future initiatives designed to promote validity, good value and inclusive approaches in disability research

Community Action Research in Disability (CARD): An Inclusive Research Programme in Uganda

The ideology of Emancipatory Disability Research (EDR) reflected in the phrase ‘Nothing about us without us’, was first put forward in the 1990s. Although it aimed to place research control in the hands of the ‘researched’, i.e., people with disability, this rarely happens even today, 25 years later. The Community Action Research on Disability (CARD) programme in Uganda embraced and modified the EDR approach, recognising the need for including people with disability in the research process from concept to outcome, and nurturing participation and collaboration between all the stakeholders in achieving action-based research. The research teams always included people with disability and staff from Disabled People’s Organisations (DPOs) as well as academics and service providers. It endeavoured to generate and carry out research around issues that mattered to people with disability and their families. Leadership roles were assigned by team members. The objectives of the CARD programme were: (1) to fund teams to carry out action-based research on disability in Uganda; (2) to develop research and administrative capacity to manage the initiative within the academic registrar’s office at Kyambogo University; (3) to incorporate new knowledge generated from the studies into the ongoing local community-based rehabilitation and special education courses; and, (4) to ensure wide dissemination of research findings to all stakeholder groups. CARD ran for 5 years, commissioning 21 action research studies in the field of disability and community-based services. This paper describes the process, presents the 12 completed studies, examines the extent to which the objectives were achieved and evaluates the experiences of the participating research teams, particularly in relation to the inclusion of its members with disability. It concludes with recommendations for future initiatives designed to promote validity, good value and inclusive approaches in disability research

Social support needs for equity in health and social care: a thematic analysis of experiences of people with chronic fatigue syndrome/myalgic encephalomyelitis

BACKGROUND: Needs-based resource allocation is fundamental to equitable care provision, which can meet the often-complex, fluctuating needs of people with Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME). This has posed challenges both for those providing and those seeking support providers, in building shared understanding of the condition and of actions to address it. This qualitative study reports on needs for equity in health and social care expressed by adults living with CFS/ME. METHODS: The participants were 35 adults with CFS/ME in England, purposively selected to provide variation in clinical presentations, social backgrounds and illness experiences. Accounts of experienced needs and needs-related encounters with health and social services were obtained through a focus group (n = 6) and semi-structured interviews (n = 35). These were transcribed and needs related topics identified through data-led thematic analysis. FINDINGS: Participants emphasised needs for personalised, timely and sustained support to alleviate CFS/ME impacts and regain life control, in three thematic areas: (1) Illness symptoms, functional limitations and illness management; (2) practical support and social care; (3) financial support. Access of people with CFS/ME to support from health and social services was seen to be constrained by barriers stemming from social, cultural, organisational and professional norms and practices, further heightened for disadvantaged groups including some ethnic minorities. These reduced opportunities for their illness to be explained or associated functional limitations and social disadvantages to be addressed through social support. Participants sought more understanding of bio-psycho-social aspects of CFS/ME, of felt needs of people with CFS/ME and of human rights and disability rights, for providing person-centred, equitable care. CONCLUSIONS: Changes in attitudes of health practitioners, policy makers and general public and more flexibly organised health and social care provision are needed to address equity issues in support needs expressed by people with CFS/ME, to be underpinned by research-based knowledge and communication, for public and professional education. Policy development should include shared decision-making and coordinated action across organizations working for people with CFS/ME, human rights and disadvantaged groups. Experiences of people with CFS/ME can usefully inform an understanding of equity in their health and social care