119 research outputs found
Estudio de posibles implementaciones en el BMS (Battle Management System)
El presente trabajo realiza un estudio y análisis de las posibles mejoras a implementar dentro del sistema de mando y control BMS, utilizado a bordo de muchos de los vehículos del Ejército de Tierra, y especialmente usado en el Arma de Caballería. El BMS se define como un sistema de información y comunicaciones para el Mando y Control compuesto por una Tablet con un sistema operativo Windows 10 al que se le instala un software específico “BMS”. El sistema permite la acción coordinada de las distintas unidades de combate con sus Puestos de Mando (PC,s) y las distintas unidades de apoyo al combate.La metodología empleada recoge tanto técnicas cualitativas como cuantitativas. Entre las técnicas cualitativas destaca el empleo de encuestas y entrevistas con el objetivo de recabar información y determinar aquellas carencias más significativas que presente el BMS. Finalmente, de la relación de mejoras que se podrían implementar al sistema, se hará uso de técnicas cuantitativas para valorar aquellas propuestas que el GCLAC “Reyes Católicos” II considere más eficientes, novedosas y relevantes para el Ejército de Tierra (ET).Como técnicas cuantitativas se hace uso de un diagrama de Gantt para planificar el proyecto, un análisis de “Stakeholders” para identificar las entidades interesadas en las mejoras propuestas, un estudio de viabilidad que pretende medir el beneficio que aportan las mejoras al ET y la simulación de un caso práctico según la metodología de decisión multicriterio AHP (Analytic Hierarchy Process) como una nueva herramienta de apoyo a la decisión para el Jefe de Unidad (JU).El proyecto establece como objetivos dar solución a problemas como la lentitud a la hora de ejercer el nuevo método de planeamiento recogido en el manual PPO-T (Proceso de Planeamiento de Operaciones a nivel Táctico), la inexistencia de unos formatos de órdenes ya preestablecidos o, la falta de un repositorio de almacenamiento de información referente al planeamiento de las operaciones militares dentro de la red de combate BMS. Un almacenamiento que permitiría compartir archivos entre los usuarios de una misma red mediante sus dispositivos BMS.La solución que se propone sería la implementación de una aplicación dentro del BMS que permita desempeñar el método de planeamiento PPO-T de una manera más eficiente. Una mejora en la que se elaboran los productos de cada una de las fases del planeamiento de una manera intuitiva y esquemática, con formatos de documentación ya preestablecidos. Un avance para el BMS que logra reducir los tiempos de elaboración de los productos de planeamiento.La resolución del problema continúa con la posibilidad de compartir los productos del planeamiento de manera permanente y con toda la unidad. Esta idea aprovecha la red de área local (LAN) denominada Red Radio de Combate (RRC) que se establece para enlazar las distintas plataformas BMS de una misma unidad para generar un repositorio de almacenamiento de archivos virtual en dicha red. La posibilidad de disponer de información sobre la operación que se está desarrollando en todo momento y que la misma sea actualizada según avanzan los acontecimientos supondrá otro salto cualitativo en el BMS.<br /
A consensus process to agree best practice for managing physical wellbeing in people with a prolonged disorder of consciousness.
BACKGROUND: Current practice for physical wellbeing of people in a Prolonged Disorder of Consciousness (PDOC) is variable. A scoping literature review identified no agreed standard of care for physical management of those in a PDOC. This study addressed this deficit using a consensus process applied using nominal group technique. AIM: The aims of this project were to promote best practice for physical management in PDOC, by identifying consensus for: 1) a pathway of care; and 2) current best practice recommendations. DESIGN: A consensus process using nominal group technique. SETTING: Representation from national, purposively selected, rehabilitation services assessing and managing people in a PDOC in the UK. POPULATION: The population to whom the consensus process relates are people in a PDOC, requiring physical management. METHODS: An initial meeting with selected clinical experts from national centres was conducted to set terms of reference. A consensus meeting using nominal group technique (N.=33) then followed. Experts were initially asked to review systematic review findings reproduced as statements. Following systematic refinement, they were then asked to vote on the importance and relevance of statements. RESULTS: Following the nominal group process, 25 initial recommendations were refined to 19, which expressed the principles of physical management for people with a Prolonged Disorder of Consciousness. Statements are grouped into "acute-care" (6-recommendations), "postacute care" (10-recommendations) and "long-term care" (3-recommendations). Across the participants, agreement with the final recommendation statements ranged from 100-61% (N.=33-20), 15 of the statements were supported by 85% or more experts (N.=29). In addition, a clinical pathway of care, incorporating the recommendation principles was produced (agreement from 28 experts, 83%). CONCLUSIONS: The recommendations provide a basis for standardising current practice. They provide a standard against which care, and effectiveness can be evaluated. An accessible guideline document is planned for publication to enable implementation into practice, supported by online resources. CLINICAL REHABILITATION IMPACT: Recommendations have been produced under the headings of "acute care," "postacute care" and "long-term care." In addition, a pathway for provision of care interventions has been identified for the physical management of people in a prolonged disorder of consciousness
Models and Observations of Sunspot Penumbrae
The mysteries of sunspot penumbrae have been under an intense scrutiny for
the past 10 years. During this time, some models have been proposed and
refuted, while the surviving ones had to be modified, adapted and evolved to
explain the ever-increasing array of observational constraints. In this
contribution I will review two of the present models, emphasizing their
contributions to this field, but also pinpointing some of their inadequacies to
explain a number of recent observations at very high spatial resolution. To
help explaining these new observations I propose some modifications to each of
them. These modifications bring those two seemingly opposite models closer
together into a general picture that agrees well with recent 3D
magneto-hydrodynamic simulations.Comment: 9 pages, 1 color figure. Review talk to appear in the proceedings of
the International Workshop of 2008 Solar Total Eclipse: Solar Magnetism,
Corona and Space Weather--Chinese Space Solar Telescope Scienc
Patterns of psychological responses among the public during the early phase of COVID-19: A cross-regional analysis
This study aimed to compare the mediation of psychological flexibility, prosociality and coping in the impacts of illness perceptions toward COVID-19 on mental health among seven regions. Convenience sampled online survey was conducted between April and June 2020 from 9130 citizens in 21 countries. Illness perceptions toward COVID-19, psychological flexibility, prosociality, coping and mental health, socio-demographics, lockdown-related variables and COVID-19 status were assessed. Results showed that psychological flexibility was the only significant mediator in the relationship between illness perceptions toward COVID-19 and mental health across all regions (all ps = 0.001–0.021). Seeking social support was the significant mediator across subgroups (all ps range = <0.001–0.005) except from the Hong Kong sample (p = 0.06) and the North and South American sample (p = 0.53). No mediation was found for problem-solving (except from the Northern European sample, p = 0.009). Prosociality was the significant mediator in the Hong Kong sample (p =0.016) and the Eastern European sample (p = 0.008). These findings indicate that fostering psychological flexibility may help to mitigate the adverse mental impacts of COVID-19 across regions. Roles of seeking social support, problem-solving and prosociality vary across regions. © 2021 by the authors. Licensee MDPI, Basel, Switzerland
Mental Health Status of Healthcare Workers During the COVID-19 Outbreak An International Study
Background: The COVID-19 pandemic is a massive health crisis that has exerted enormous physical and psychological pressure. Mental healthcare for healthcare workers (HCWs) should receive serious consideration. This study served to determine the mental-health outcomes of 1,556 HCWs from 45 countries who participated in the COVID-19 IMPACT project, and to examine the predictors of the outcomes during the first pandemic wave. Methods: Outcomes assessed were self-reported perceived stress, depression symptom, and sleep changes. The predictors examined included sociodemographic factors and perceived social support. Results: The results demonstrated that half of the HCWs had moderate levels of perceived stress and symptoms of depression. Half of the HCWs (n = 800, 51.4%) had similar sleeping patterns since the pandemic started, and one in four slept more or slept less. HCWs reported less perceived stress and depression symptoms and higher levels of perceived social support than the general population who participated in the same project. Predictors associated with higher perceived stress and symptoms of depression among HCWs included female sex, not having children, living with parents, lower educational level, and lower social support. Discussion: The need for establishing ways to mitigate mental-health risks and adjusting psychological interventions and support for HCWs seems to be significant as the pandemic continues
Mental health and adherence to covid-19 protective behaviors among cancer patients during the covid-19 pandemic: An international, multinational cross-sectional study
A population-based cross-sectional study was conducted during the first COVID-19 wave, to examine the impact of COVID-19 on mental health using an anonymous online survey, enrolling 9565 individuals in 78 countries. The current sub-study examined the impact of the pandemic and the associated lockdown measures on the mental health, and protective behaviors of cancer patients in comparison to non-cancer participants. Furthermore, 264 participants from 30 different countries reported being cancer patients. The median age was 51.5 years, 79.9% were female, and 28% had breast cancer. Cancer participants reported higher self-efficacy to follow recommended national guidelines regarding COVID-19 protective behaviors compared to non-cancer participants (p < 0.01). They were less stressed (p < 0.01), more psychologically flexible (p < 0.01), and had higher levels of positive affect compared to non-cancer participants. Amongst cancer participants, the majority (80.3%) reported COVID-19, not their cancer, as their priority during the first wave of the pandemic and females reported higher levels of stress compared to males. In conclusion, cancer participants appeared to have handled the unpredictable nature of the first wave of the pandemic efficiently, with a positive attitude towards an unknown and otherwise frightening situation. Larger, cancer population specific and longitudinal studies are warranted to ensure adequate medical and psychological care for cancer patients. © 2021 by the authors. Licensee MDPI, Basel, Switzerland
Mental health and adherence to covid-19 protective behaviors among cancer patients during the covid-19 pandemic: An international, multinational cross-sectional study
A population-based cross-sectional study was conducted during the first COVID-19 wave, to examine the impact of COVID-19 on mental health using an anonymous online survey, enrolling 9565 individuals in 78 countries. The current sub-study examined the impact of the pandemic and the associated lockdown measures on the mental health, and protective behaviors of cancer patients in comparison to non-cancer participants. Furthermore, 264 participants from 30 different countries reported being cancer patients. The median age was 51.5 years, 79.9% were female, and 28% had breast cancer. Cancer participants reported higher self-efficacy to follow recommended national guidelines regarding COVID-19 protective behaviors compared to non-cancer participants (p < 0.01). They were less stressed (p < 0.01), more psychologically flexible (p < 0.01), and had higher levels of positive affect compared to non-cancer participants. Amongst cancer participants, the majority (80.3%) reported COVID-19, not their cancer, as their priority during the first wave of the pandemic and females reported higher levels of stress compared to males. In conclusion, cancer participants appeared to have handled the unpredictable nature of the first wave of the pandemic efficiently, with a positive attitude towards an unknown and otherwise frightening situation. Larger, cancer population specific and longitudinal studies are warranted to ensure adequate medical and psychological care for cancer patients
Modeling the Subsurface Structure of Sunspots
While sunspots are easily observed at the solar surface, determining their
subsurface structure is not trivial. There are two main hypotheses for the
subsurface structure of sunspots: the monolithic model and the cluster model.
Local helioseismology is the only means by which we can investigate
subphotospheric structure. However, as current linear inversion techniques do
not yet allow helioseismology to probe the internal structure with sufficient
confidence to distinguish between the monolith and cluster models, the
development of physically realistic sunspot models are a priority for
helioseismologists. This is because they are not only important indicators of
the variety of physical effects that may influence helioseismic inferences in
active regions, but they also enable detailed assessments of the validity of
helioseismic interpretations through numerical forward modeling. In this paper,
we provide a critical review of the existing sunspot models and an overview of
numerical methods employed to model wave propagation through model sunspots. We
then carry out an helioseismic analysis of the sunspot in Active Region 9787
and address the serious inconsistencies uncovered by
\citeauthor{gizonetal2009}~(\citeyear{gizonetal2009,gizonetal2009a}). We find
that this sunspot is most probably associated with a shallow, positive
wave-speed perturbation (unlike the traditional two-layer model) and that
travel-time measurements are consistent with a horizontal outflow in the
surrounding moat.Comment: 73 pages, 19 figures, accepted by Solar Physic
Height and timing of growth spurt during puberty in young people living with vertically acquired HIV in Europe and Thailand.
OBJECTIVE: The aim of this study was to describe growth during puberty in young people with vertically acquired HIV. DESIGN: Pooled data from 12 paediatric HIV cohorts in Europe and Thailand. METHODS: One thousand and ninety-four children initiating a nonnucleoside reverse transcriptase inhibitor or boosted protease inhibitor based regimen aged 1-10 years were included. Super Imposition by Translation And Rotation (SITAR) models described growth from age 8 years using three parameters (average height, timing and shape of the growth spurt), dependent on age and height-for-age z-score (HAZ) (WHO references) at antiretroviral therapy (ART) initiation. Multivariate regression explored characteristics associated with these three parameters. RESULTS: At ART initiation, median age and HAZ was 6.4 [interquartile range (IQR): 2.8, 9.0] years and -1.2 (IQR: -2.3 to -0.2), respectively. Median follow-up was 9.1 (IQR: 6.9, 11.4) years. In girls, older age and lower HAZ at ART initiation were independently associated with a growth spurt which occurred 0.41 (95% confidence interval 0.20-0.62) years later in children starting ART age 6 to 10 years compared with 1 to 2 years and 1.50 (1.21-1.78) years later in those starting with HAZ less than -3 compared with HAZ at least -1. Later growth spurts in girls resulted in continued height growth into later adolescence. In boys starting ART with HAZ less than -1, growth spurts were later in children starting ART in the oldest age group, but for HAZ at least -1, there was no association with age. Girls and boys who initiated ART with HAZ at least -1 maintained a similar height to the WHO reference mean. CONCLUSION: Stunting at ART initiation was associated with later growth spurts in girls. Children with HAZ at least -1 at ART initiation grew in height at the level expected in HIV negative children of a comparable age
DAS-28-based EULAR response and HAQ improvement in rheumatoid arthritis patients switching between TNF antagonists
<p>Abstract</p> <p>Introduction</p> <p>No definitive data are available regarding the value of switching to an alternative TNF antagonist in rheumatoid arthritis patients who fail to respond to the first one. The aim of this study was to evaluate treatment response in a clinical setting based on HAQ improvement and EULAR response criteria in RA patients who were switched to a second or a third TNF antagonist due to failure with the first one.</p> <p>Methods</p> <p>This was an observational, prospective study of a cohort of 417 RA patients treated with TNF antagonists in three university hospitals in Spain between January 1999 and December 2005. A database was created at the participating centres, with well-defined operational instructions. The main outcome variables were analyzed using parametric or non-parametric tests depending on the level of measurement and distribution of each variable.</p> <p>Results</p> <p>Mean (± SD) DAS-28 on starting the first, second and third TNF antagonist was 5.9 (± 2.0), 5.1 (± 1.5) and 6.1 (± 1.1). At the end of follow-up, it decreased to 3.3 (± 1.6; Δ = -2.6; p > 0.0001), 4.2 (± 1.5; Δ = -1.1; p = 0.0001) and 5.4 (± 1.7; Δ = -0.7; p = 0.06). For the first TNF antagonist, DAS-28-based EULAR response level was good in 42% and moderate in 33% of patients. The second TNF antagonist yielded a good response in 20% and no response in 53% of patients, while the third one yielded a good response in 28% and no response in 72%. Mean baseline HAQ on starting the first, second and third TNF antagonist was 1.61, 1.52 and 1.87, respectively. At the end of follow-up, it decreased to 1.12 (Δ = -0.49; p < 0.0001), 1.31 (Δ = -0.21, p = 0.004) and 1.75 (Δ = -0.12; p = 0.1), respectively. Sixty four percent of patients had a clinically important improvement in HAQ (defined as ≥ -0.22) with the first TNF antagonist and 46% with the second.</p> <p>Conclusion</p> <p>A clinically significant effect size was seen in less than half of RA patients cycling to a second TNF antagonist.</p
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