674 research outputs found

    Children with Special Needs and the Effect on the Family

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    The purpose of this study was to examine the family unit after the addition of a child with special needs. Additional stressors, positive and negative emotions were also explored in this study. The results of this study suggested that all families have different experiences with their child but they may feel similar emotions, feelings, and face the same characteristics depending on their child\u27s diagnosis

    Children with Special Needs and the Effect on the Family

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    The purpose of this study was to examine the family unit after the addition of a child with special needs. Additional stressors, positive and negative emotions were also explored in this study. The results of this study suggested that all families have different experiences with their child but they may feel similar emotions, feelings, and face the same characteristics depending on their child\u27s diagnosis

    User to Exoskeleton Sensing

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    Identification of Distinct Characteristics of Antibiofilm Peptides and Prospection of Diverse Sources for Efficacious Sequences

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    A majority of microbial infections are associated with biofilms. Targeting biofilms is considered an effective strategy to limit microbial virulence while minimizing the development of antibiotic resistance. Toward this need, antibiofilm peptides are an attractive arsenal since they are bestowed with properties orthogonal to small molecule drugs. In this work, we developed machine learning models to identify the distinguishing characteristics of known antibiofilm peptides, and to mine peptide databases from diverse habitats to classify new peptides with potential antibiofilm activities. Additionally, we used the reported minimum inhibitory/eradication concentration (MBIC/MBEC) of the antibiofilm peptides to create a regression model on top of the classification model to predict the effectiveness of new antibiofilm peptides. We used a positive dataset containing 242 antibiofilm peptides, and a negative dataset which, unlike previous datasets, contains peptides that are likely to promote biofilm formation. Our model achieved a classification accuracy greater than 98% and harmonic mean of precision-recall (F1) and Matthews correlation coefficient (MCC) scores greater than 0.90; the regression model achieved an MCC score greater than 0.81. We utilized our classification-regression pipeline to evaluate 135,015 peptides from diverse sources for potential antibiofilm activity, and we identified 185 candidates that are likely to be effective against preformed biofilms at micromolar concentrations. Structural analysis of the top 37 hits revealed a larger distribution of helices and coils than sheets, and common functional motifs. Sequence alignment of these hits with known antibiofilm peptides revealed that, while some of the hits showed relatively high sequence similarity with known peptides, some others did not indicate the presence of antibiofilm activity in novel sources or sequences. Further, some of the hits had previously recognized therapeutic properties or host defense traits suggestive of drug repurposing applications. Taken together, this work demonstrates a new in silico approach to predicting antibiofilm efficacy, and identifies promising new candidates for biofilm eradication

    Variable Friction Device for Structural Control based on Duo-Servo Vehicle Brake: Modeling and Experimental Validation

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    Supplemental damping can be used as a cost-effective method to reduce structural vibrations. In particular, passive systems are now widely accepted and have numerous applications in the field. However, they are typically tuned to specific excitations and their performances are bandwidth-limited. A solution is to use semi-active devices, which have shown to be capable of substantially enhanced mitigation performance. The authors have recently proposed a new type of semi-active device, which consists of a variable friction mechanism based on a vehicle duo-servo drum brake, a mechanically robust and reliable technology. The theoretical performance of the proposed device has been previously demonstrated via numerical simulations. In this paper, we further the understanding of the device, termed Modified Friction Device (MFD) by fabricating a small scale prototype and characterizing its dynamic behavior. While the dynamics of friction is well understood for automotive braking technology, we investigate for the first time the dynamic behavior of this friction mechanism at low displacements and velocities, in both forward and backward directions, under various hydraulic pressures. A modified 3-stage dynamic model is introduced. A LuGre friction model is used to characterize the friction zone (Stage 1), and two pure stiffness regions to characterize the dynamics of the MFD once the rotation is reversed and the braking shoes are sticking to the drum (Stage 2) and the rapid build up of forces once the shoes are held by the anchor pin (Stage 3). The proposed model is identified experimentally by subjecting the prototype to harmonic excitations. It is found that the proposed model can be used to characterize the dynamics of the MFD, and that the largest fitting error arises at low velocity under low pressure input. The model is then verified by subjecting the MFD to two different earthquake excitations under different pressure inputs. The model is capable of tracking the deviceŚłs response, despite a lower fitting performance under low pressure and small force output, as it was found in the harmonic tests due to the possible nonlinearity in Stage 2 of the model

    Best practice in maternity and mental health services? A service user's perspective

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    The birth of a baby is a much-anticipated event. However, for some women diagnosed with mental health needs their pregnancy and potential parenting are seen as problematic. Even if the child is much wanted and the pregnancy is planned, this news can be greeted with uncertainty and concern by the medical and maternity services. They need to plan how they will “manage” the mother’s behavior and protect the child from her potentially risky behavior. Most literature focuses on the negative impact that mental illness has on the development of the baby and the young child.1,2 It emphasizes the risk factors that specific mental illness diagnoses might have and the mother’s potential for abuse of her offspring.3,4 However, qualitative literature, which has been undertaken with mothers with a diagnosis, introduces a different perspective. Indeed fear of removal of the child,5 a perception of the intrusiveness of services5,6 and the stigma of mental ill health dominate their contact with mental health and child development services.7,8 In this article, I use a synthesis of first person narrative and research to explore the experience of being a both a pregnant woman and new mother who has a diagnosis of schizophrenia and my relationship with both mental health and maternity services. I describe the best practice care I received from the mental health services and the reactive, diagnosis led service that was set in motion by the maternity services. I intertwine the 2 elements of research and experience to explore how service provision can be more effective when it is built on a model that promotes shared decision-making and a sense of trust with shared responsibility. I seek to challenge the process led nature of care that leads professionals to become unquestioning actors in a game of risk management and discuss how practitioners can work with people as individuals. In this discussion, I highlight the importance of the strengths led approach, which is underpinned by a belief in clients’ capabilities and strengths, not their deficits

    COVID’s Lasting Impact on Georgia Libraries

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    Special Article Call: This spring marks three years since the onset of the COVID-19 pandemic. Looking back, what have been the pandemic\u27s lasting impacts on your work or your library? What have you or your library learned or how have you changed

    Laboratory evidence of disseminated intravascular coagulation is associated with a fatal outcome in children with cerebral malaria despite an absence of clinically evident thrombosis or bleeding

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    Background A procoagulant state is implicated in cerebral malaria (CM ) pathogenesis, but whether disseminated intravascular coagulation (DIC ) is present or associated with a fatal outcome is unclear. Objectives To determine the frequency of overt DIC , according to ISTH criteria, in children with fatal and non‐fatal CM . Methods/patients Malawian children were recruited into a prospective cohort study in the following diagnostic groups: retinopathy‐positive CM (n = 140), retinopathy‐negative CM (n = 36), non‐malarial coma (n = 14), uncomplicated malaria (UM ), (n = 91), mild non‐malarial febrile illness (n = 85), and healthy controls (n = 36). Assays in the ISTH DIC criteria were performed, and three fibrin‐related markers, i.e. protein C, antithrombin, and soluble thrombomodulin, were measured. Results and conclusions Data enabling assignment of the presence or absence of ‘overt DIC ’ were available for 98 of 140 children with retinopathy‐positive CM . Overt DIC was present in 19 (19%), and was associated with a fatal outcome (odds ratio [OR] 3.068; 95% confidence interval [CI] 1.085–8.609; P = 0.035]. The levels of the three fibrin‐related markers and soluble thrombomodulin were higher in CM patients than in UM patients (all P < 0.001). The mean fibrin degradation product level was higher in fatal CM patients (71.3 ÎŒg mL−1 [95% CI 49.0–93.6]) than in non‐fatal CM patients (48.0 ÎŒg mL−1 [95% CI 37.7–58.2]; P = 0.032), but, in multivariate logistic regression, thrombomodulin was the only coagulation‐related marker that was independently associated with a fatal outcome (OR 1.084 for each ng mL−1 increase [95% CI 1.017–1.156]; P = 0.014). Despite these laboratory derangements, no child in the study had clinically evident bleeding or thrombosis. An overt DIC score and high thrombomodulin levels are associated with a fatal outcome in CM , but infrequently indicate a consumptive coagulopathy

    Behavioural and Cognitive Associations of Short Stature at 5 Years

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    Objectives To determine the extent to which childhood short stature is associated with cognitive, behavioural and chronic health problems, and whether these problems could be attributed to recognized adverse biological, psychosocial or psychological factors. Methodology At their first antenatal session, 8556 women were enrolled in a prospective study of pregnancy. When their children were 4 and 6 years of age, mothers completed a detailed questionnaire concerning their child's health and behaviour. A Peabody Picture Vocabulary Test-Revised (PPVT-R) was completed by the child at 5 years of age. Z scores were used to categorize height measurements in 3986 children. The relationship of these height categories with the child's health, and behavioural and cognitive problems was then examined. Results No association was found between height and symptoms of chronic disease or behaviour problems in boys or girls. On the unadjusted analysis, mean PPVT-R scores were significantly lower in boys with heights < 3 percentile and 3-10 percentile compared with study children between 10 to 90 percentile (P < 0.01). Scores were similarly significantly lower in girls with heights < 3 percentile and 3-10 percentile (P = 0.01). Even after adjusting for psychosocial and biological confounders, short stature remained a significant predictor for lower PPVT-R scores in both boys and girls, although height only accounted for 1.1% of the variance in scores in boys and 0.5% of the variance in PPVT-R scores in girls. Psychosocial factors had a greater role than height in determining PPVT-R scores at 5 years of age. Conclusions These findings suggest a significant, though small, association between height and PPVT-R scores at 5 years of age, independent of psychosocial disadvantage and known biological risk factors
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