scholarly journals Compensation Techniques Aimed at Mitigating Vibrations in Optical Ground-Based Telescopes: A Systematic Review

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3613
Author(s):  
Guillermo Palacios-Navarro ◽  
Fernando Arranz Martínez ◽  
Raúl Martín Ferrer ◽  
Pedro Ramos Lorente

The objective of this study was to evaluate the performance of the different systems and techniques aimed at suppressing vibrations on optical ground-based telescopes. We identified the studies by searching three electronic databases (Science Direct, IEEE library and Web of Science) from the year 2000 to December 2020. The studies were eligible if they proposed systems focused on mitigating the effects of vibrations in optical telescopes and brought performance data. A total of nine studies met our eligibility criteria. Current evidence confirms the feasibility of adaptative optics (AO) systems based on closed-loop control to mitigate vibrations, although variations and additions should be made depending on their nature and characteristics in order to improve the performance of the proposed techniques. This systematic review was conducted to provide a state-of-the-art of the methods and techniques that have been developed over the past two decades. The review also points out some issues that demand future research.

2019 ◽  
Vol 28 (8) ◽  
pp. 672-686 ◽  
Author(s):  
Helen Higham ◽  
Paul R Greig ◽  
John Rutherford ◽  
Laura Vincent ◽  
Duncan Young ◽  
...  

BackgroundOver the past three decades multiple tools have been developed for the assessment of non-technical skills (NTS) in healthcare. This study was designed primarily to analyse how they have been designed and tested but also to consider guidance on how to select them.ObjectivesTo analyse the context of use, method of development, evidence of validity (including reliability) and usability of tools for the observer-based assessment of NTS in healthcare.DesignSystematic review.Data sourcesSearch of electronic resources, including PubMed, Embase, CINAHL, ERIC, PsycNet, Scopus, Google Scholar and Web of Science. Additional records identified through searching grey literature (OpenGrey, ProQuest, AHRQ, King’s Fund, Health Foundation).Study selectionStudies of observer-based tools for NTS assessment in healthcare professionals (or undergraduates) were included if they: were available in English; published between January 1990 and March 2018; assessed two or more NTS; were designed for simulated or real clinical settings and had provided evidence of validity plus or minus usability. 11,101 articles were identified. After limits were applied, 576 were retrieved for evaluation and 118 articles included in this review.ResultsOne hundred and eighteen studies describing 76 tools for assessment of NTS in healthcare met the eligibility criteria. There was substantial variation in the method of design of the tools and the extent of validity, and usability testing. There was considerable overlap in the skills assessed, and the contexts of use of the tools.ConclusionThis study suggests a need for rationalisation and standardisation of the way we assess NTS in healthcare and greater consistency in how tools are developed and deployed.


Author(s):  
D. Rowe ◽  
A. Rudkin

Lifestyle planning (LP) for people with learning disabilities is largely supported by qualitative rather than quantitative research. LP is a time-consuming and potentially resource-intensive area of practice which is becoming more prevalent in the UK. We present the first systematic review of the qualitative evidence base for the use of LP in people with learning disabilities. Such evidence concerns the special characteristics of LP and its outcomes in descriptive rather than quantitative terms. Qualitative research is usually aimed at enhancing validity by grounding theory in data collected. Twenty-one studies passed eligibility criteria for inclusion in this review, but only ten provided any outcome data, the others being concerned with process only. A replicable search strategy was employed and the resulting original data sources were critically reviewed with respect to major concepts and categories in the areas of: planning process, choices and preferences, ethics and outcomes. Explicitly person-centred approaches such as essential lifestyle planning are contrasted with more service-led methods such as individual programme planning. There are major methodological limitations in much of the available literature and suggestions for future research to clarify matters are made. The current evidence base suggests that no form of LP has significantly better outcomes than any other form and that it is not clear if LP in general enhances outcomes. Ongoing use of person centred planning in particular is informed by ethical considerations and is evolving in its structure and function.


2020 ◽  
Author(s):  
Ciro Rodriguez-Leon ◽  
Claudia Villalonga ◽  
Manuel Munoz-Torres ◽  
Jonatan R Ruiz ◽  
Oresti Banos

BACKGROUND Diabetes mellitus is a metabolic disorder suffered by hundreds of millions of people worldwide and causing several million deaths every year. Such a dramatic scenario puts quite some pressure on administrations, care services and the scientific community to seek novel solutions that may help controlling and dealing effectively with this condition and its consequences. OBJECTIVE This study is aimed at reviewing the literature on the use of modern mobile and wearable technology for monitoring parameters that condition the development and/or evolution of diabetes mellitus. METHODS A systematic review of articles published between January 2010 and July 2020 was performed following PRISMA guidelines. Manuscripts indexed in Web of Science and SCOPUS databases were included if they involved the measurement of diabetes-related parameters, such as blood glucose level, performed physical activity or feet condition, via wearable or mobile devices. RESULTS The search yielded 1587 articles. Altogether, 26 publications met the eligibility criteria and were included in the review. Studies used predominantly wearable devices for monitoring diabetes-related parameters. The accelerometer was by far the most used sensor, followed by the glucose monitor and the heart rate monitor. Most studies applied some kind of processing to the collected data mainly consisting of statistical analysis or machine learning for activity recognition, finding associations among health outcomes, and diagnosing conditions related to diabetes. Privacy or security issues were seldom addressed, and if so, at a rather insufficient level. CONCLUSIONS The use of mobile and wearable devices for the monitoring of diabetes-related parameters shows early promise. Its development can benefit diabetes patients, healthcare professionals and researchers. To evolve this area future research must pay special attention to privacy and security issues, the use of new emerging sensor technologies, and the combination of mobile and clinical data for a holistic and seamless understanding of the patient's health state.


2020 ◽  
Vol 9 (4) ◽  
pp. 967 ◽  
Author(s):  
Minah Park ◽  
Alex R. Cook ◽  
Jue Tao Lim ◽  
Yinxiaohe Sun ◽  
Borame L. Dickens

As the novel coronavirus (SARS-CoV-2) continues to spread rapidly across the globe, we aimed to identify and summarize the existing evidence on epidemiological characteristics of SARS-CoV-2 and the effectiveness of control measures to inform policymakers and leaders in formulating management guidelines, and to provide directions for future research. We conducted a systematic review of the published literature and preprints on the coronavirus disease (COVID-19) outbreak following predefined eligibility criteria. Of 317 research articles generated from our initial search on PubMed and preprint archives on 21 February 2020, 41 met our inclusion criteria and were included in the review. Current evidence suggests that it takes about 3-7 days for the epidemic to double in size. Of 21 estimates for the basic reproduction number ranging from 1.9 to 6.5, 13 were between 2.0 and 3.0. The incubation period was estimated to be 4-6 days, whereas the serial interval was estimated to be 4-8 days. Though the true case fatality risk is yet unknown, current model-based estimates ranged from 0.3% to 1.4% for outside China. There is an urgent need for rigorous research focusing on the mitigation efforts to minimize the impact on society.


Author(s):  
Álvaro Sicilia ◽  
Adrian Paterna ◽  
Manuel Alcaraz-Ibáñez ◽  
Mark D. Griffiths

AbstractBackground and aims: The aim of the present systematic review was to identify psychometric tools developed to assess problematic exercise in order to identify and compare their theoretical conceptualisations on which they are based. Methods: A systematic literature search was conducted in the electronic databases Web of Science, Scielo, PsychINFO, PsycTEST and SCOPUS from their inception to January 2020. Results: Seventeen assessment instruments met the eligibility criteria to be included in the present review. The instruments were classified according to their conceptualisation into five groups: (i) problematic exercise as an end of an exercise continuum, (ii) problematic exercise as a means of regulating body size and weight, (iii) problematic exercise as dependence, (iv) problematic exercise as a behavioural addiction and (v) no clear conceptualisation. Discussion: The results suggest that the conceptualisations of the assessment instruments have resulted in a strong dichotomy in relation to the primary or secondary character of the problematic exercise that might be limiting the capacity of the instruments to adequately capture the multidimensionality of this construct. Conclusions: Given the interest in understanding the complexity surrounding the problematic exercise, future research should develop more comprehensive definitions of this construct. This would allow a greater conceptual consensus to be reached that would allow progress to be made in the study of the problematic exercise.


2020 ◽  
Author(s):  
Kurt D Shulver ◽  
Nicholas A Badcock

We report the results of a systematic review and meta-analysis investigating the relationship between perceptual anchoring and dyslexia. Our goal was to assess the direction and degree of effect between perceptual anchoring and reading ability in typical and atypical (dyslexic) readers. We performed a literature search of experiments explicitly assessing perceptual anchoring and reading ability using PsycInfo (Ovid, 1860 to 2020), MEDLINE (Ovid, 1860 to 2019), EMBASE (Ovid, 1883 to 2019), and PubMed for all available years up to June (2020). Our eligibility criteria consisted of English-language articles and, at minimum, one experimental group identified as dyslexic - either by reading assessment at the time, or by previous diagnosis. We assessed for risk of bias using an adapted version of the Newcastle-Ottawa scale. Six studies were included in this review, but only five (n = 280 participants) were included in the meta-analysis (we were unable to access the necessary data for one study).The overall effect was negative, large and statistically significant; g = -0.87, 95% CI [-1.47, 0.27]: a negative effect size indicating less perceptual anchoring in dyslexic versus non-dyslexic groups. Visual assessment of funnel plot and Egger’s test suggest minimal bias but with significant heterogeneity; Q (4) = 9.70, PI (prediction interval) [-2.32, -0.58]. The primary limitation of the current review is the small number of included studies. We discuss methodological limitations, such as limited power, and how future research may redress these concerns. The variability of effect sizes appears consistent with the inherent variability within subtypes of dyslexia. This level of dispersion seems indicative of the how we define cut-off thresholds between typical reading and dyslexia populations, but also the methodological tools we use to investigate individual performance.


BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ottovon Bismark Dakurah ◽  
Cynthia Raissa Tchuem Tamandjou ◽  
Moleen Zunza ◽  
Wolfgang Preiser ◽  
Tongai Gibson Maponga

Abstract Background Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related deaths in Africa. In Africa, the major causes of HCC include chronic infection with hepatitis B virus (HBV) and/or hepatitis C virus (HCV). Knowledge of the changes in the incidence of viral hepatitis-associated HCC over time and the factors responsible for such changes is key in informing policies for the prevention of viral hepatitis-associated HCC in Africa. Aim The study aimed to systematically summarize the changes in the prevalence of viral hepatitis among HCC patients and the overall effect of the prevalence of viral hepatitis on the incidence of HCC over the past four decades in Africa (1980–2019). Methods A literature search was conducted in MEDLINE (PubMed), Google Scholar, Science Direct, Scopus, Web of Science, and African wide web for articles published on viral hepatitis-associated HCC in Africa from 1980 to 2019. The abstracts of the articles were screened for eligibility and those meeting the inclusion criteria were retrieved and reviewed. Results A total of 272 studies were included in the analysis. Viral hepatitis-related HCC incidence changed by 1.17% (95% confidence interval (CI): 0.63–1.71, p < 0.001), 0.82% (95% CI: 0.45–1.18, p < 0.001), and 3.34% (95% CI: 2.44–4.25, p < 0.001) for every 1% change in the prevalence of HBV, HCV, and hepatitis D virus (HDV) respectively, per decade. The incidence of HBV-related HCC decreased by − 0.50% (95% CI: − 0.74 – − 0.25, p < 0.001) over the last 40 years, while HCV-related HCC increased. Conclusion Overall, the incidence of viral hepatitis-associated HCC has not declined, mainly due to no decline in the prevalence of HCV, HDV, and the high number of chronic hepatitis B carriers on the African continent. There is an urgent need for the allocation of resources for the implementation of treatment and preventive programs for HBV, HCV, HDV, and HCC in Africa. This systematic review is registered with PROSPERO®, number CRD42020169723.


2021 ◽  
Vol 14 ◽  
Author(s):  
Joel Owen ◽  
Louise Crouch-Read ◽  
Matthew Smith ◽  
Paul Fisher

Abstract For more than a decade, Improving Access to Psychological Therapies (IAPT) has been training a new workforce of psychological therapists. Despite evidence of stress and burnout both in trainee mental health professionals, and qualified IAPT clinicians, little is known about these topics in IAPT trainees. Consequently, this systematic review sought to establish the current state of the literature regarding stress and burnout in IAPT trainees. Electronic databases were searched to identify all published and available unpublished work relating to the topic. On the basis of pre-established eligibility criteria, eight studies (including six unpublished doctoral theses) were identified and assessed for quality. This review identifies that research into the experience of IAPT trainees is under-developed. Existing evidence tentatively suggests that IAPT trainees may experience levels of stress and burnout that are higher than their qualified peers and among the higher end of healthcare professionals more generally. The experience of fulfilling dual roles as mental health professionals and university students concurrently appears to be a significant source of stress for IAPT trainees. More research regarding the levels and sources of stress and burnout in IAPT trainees is urgently needed to confirm and extend these findings. Recommendations for future research in the area are given. Key learning aims (1) To establish the current state of the literature regarding stress and burnout in IAPT trainees. (2) To raise practitioner, service and education-provider awareness regarding the levels and perceived sources of stress and burnout in IAPT trainees. (3) To make recommendations regarding future research on the topic.


2019 ◽  
Vol 11 (13) ◽  
pp. 3716 ◽  
Author(s):  
Yingling Shi ◽  
Xinping Liu

Since the 21st century, the concept of green building has been gradually popularized and implemented in more countries, which has become a popular direction in the area of sustainability in the building industry. Over the past few decades, many scholars and experts have done extensive research on green building. The purpose of this paper is to systematically analyze and visualize the status quo of green building. Therefore, based on Web of Science (WoS), this paper analyzed the existing knowledge system of green building using CiteSpace, identified keywords related to green building and their frequency of occurrence using the function of keyword co-occurrence analysis, recognized five clusters using the function of cluster analysis, and explored the knowledge evolution pattern of green building using citation bursts analysis in order to reveal how research related to green building has evolved over time. On the basis of aforementioned keywords, clusters, and citation bursts analysis, this paper has built a knowledge graph for green building. This paper can help readers to better understand the status quo and development trend of green building and to easier recognize the shortcomings in the development of green building, so as to provide a promising direction for future research.


2018 ◽  
Vol 10 ◽  
pp. 117957351881354 ◽  
Author(s):  
Thais Massetti ◽  
Talita Dias da Silva ◽  
Tânia Brusque Crocetta ◽  
Regiani Guarnieri ◽  
Bruna Leal de Freitas ◽  
...  

Background: Virtual reality (VR) experiences (through games and virtual environments) are increasingly being used in physical, cognitive, and psychological interventions. However, the impact of VR as an approach to rehabilitation is not fully understood, and its advantages over traditional rehabilitation techniques are yet to be established. Method: We present a systematic review which was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). During February and March of 2018, we conducted searches on PubMed (Medline), Virtual Health Library Search Portal databases (BVS), Web of Science (WOS), and Embase for all VR-related publications in the past 4 years (2015, 2016, 2017, and 2018). The keywords used in the search were “neurorehabilitation” AND “Virtual Reality” AND “devices.” Results: We summarize the literature which highlights that a range of effective VR approaches are available. Studies identified were conducted with poststroke patients, patients with cerebral palsy, spinal cord injuries, and other pathologies. Healthy populations have been used in the development and testing of VR approaches meant to be used in the future by people with neurological disorders. A range of benefits were associated with VR interventions, including improvement in motor functions, greater community participation, and improved psychological and cognitive function. Conclusions: The results from this review provide support for the use of VR as part of a neurorehabilitation program in maximizing recovery.


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