Search

Shape-morphing capabilities are crucial for enabling multifunctionality in both biological and artificial systems. Various strategies for shape morphing have been proposed for applications in metamaterials and robotics. However, few of these approaches have achieved the ability to seamlessly transform into a multitude of volumetric shapes post-fabrication using a relatively simple actuation and control mechanism. Taking inspiration from thick origami and hierarchies in nature, we present a hierarchical construction method based on polyhedrons to create an extensive library of compact origami metastructures. We show that a single hierarchical origami structure can autonomously adapt to over 103 versatile architectural configurations, achieved with the utilization of fewer than 3 actuation degrees of freedom and employing simple transition kinematics. We uncover the fundamental principles governing theses shape transformation through theoretical models. Furthermore, we also demonstrate the wide-ranging potential applications of these transformable hierarchical structures. These include their uses as untethered and autonomous robotic transformers capable of various gait-shifting and multidirectional locomotion, as well as rapidly self-deployable and self-reconfigurable architecture, exemplifying its scalability up to the meter scale. Lastly, we introduce the concept of multitask reconfigurable and deployable space robots and habitats, showcasing the adaptability and versatility of these metastructures. Enabling complex shape morphing in engineering systems remains a significant challenge. In this work, authors demonstrate that a transformer-like hierarchical origami metastructure can self-reconfigure into over 1000 versatile structures with fewer than 3 actuation degrees of freedom and simple control. [ABSTRACT FROM AUTHOR]

Purpose: This study investigates how access to assistive technologies affects employment and earnings among people with disabilities. Methods: We first document employment and earnings gaps associated with specific impairments and activity limitations using 2017–2021 American Community Survey and 2014 Survey of Income and Program Participation data. We then use accommodations data from the 2012, 2019, and 2021 Current Population Survey (CPS) Disability Supplements to examine employment and earnings growth for people with disabilities related both to any, and to technology-based, accommodations. We also provide short descriptions of three developing assistive technologies that assist people with upper body impairments, visual impairments, and anxiety conditions. Results: Almost all impairments and activity limitations are linked to lower employment and earnings, with especially low employment among people with mobility impairments and particularly low earnings among those with cognitive impairments. About one-tenth of workers with disabilities received any accommodations, and 3–4% received equipment-based accommodations in the 2012–2021 period; these figures increased slightly over the period. The occupations with the highest disability accommodations rates had greater disability employment growth from 2012 to 2021, but disability pay gaps did not decrease more in these occupations. The three developing assistive technologies we describe illustrate the potential to reduce the estimated employment and earnings deficits. Conclusion: Assistive technology accommodations have potential for improving employment outcomes for people with disabilities. [ABSTRACT FROM AUTHOR]

Suicide has been identified as one of the most common causes of death among women within 1 year after the end of pregnancy in several high-income countries. The aim of this study was to provide the first estimate of the maternal suicide ratio and a description of the characteristics of women who died by suicide during pregnancy or within 1 year after giving birth, induced abortion or miscarriage (i.e., maternal suicide) in 10 Italian regions, covering 77% of total national births. Maternal suicides were identified through the linkage between regional death registries and hospital discharge databases. Background population data was collected from the national hospital discharge, abortion and mortality databases. The previous psychiatric history of the women who died by maternal suicide was retrieved from the regionally available data sources. A total of 67 cases of maternal suicide were identified, corresponding to a maternal suicide ratio of 2.30 per 100,000 live births in 2006–2012. The suicide rate was 1.18 per 100,000 after giving birth (n = 2,876,193), 2.77 after an induced abortion (n = 650,549) and 2.90 after a miscarriage (n = 379,583). The majority of the women who died by maternal suicide (34/57) had a previous psychiatric history; 15/18 previously diagnosed mental disorders were not registered along with the index pregnancy obstetric records. Suicide is a relevant cause of maternal death in Italy. The continuity of care between primary, mental health and maternity care were found to be critical. Clinicians should be aware of the issue, as they may play an important role in preventing suicide in their patients. [ABSTRACT FROM AUTHOR]

Exposure in utero has been suggested to influence health later in life. The aim of this study was to investigate, if the use of prenatal food supplements was associated with atopic dermatitis in the offspring. Mothers who gave birth in the hospital G. B. Grassi were invited to participate in the study (n = 395). Information on socio-demographic characteristics, clinical data of the mothers and babies, vegetables and fruit intake, food avoidance, and food supplements use during pregnancy, depression status, and environmental exposure was obtained for all subjects in the hospital at the time of delivery. Data on breastfeeding practice, introduction of weaning foods, day care attendance, and atopic dermatitis were collected in the postnatal follow-ups. Logistic regression was applied to estimate odds ratio (OR) and 95% confidence intervals (CI). Children in which mothers used both iron and folic acid supplementation had a fourfold decreased risk of developing atopic dermatitis [OR = 0.22; 95% confidence interval (CI) 0.06–0.79, p = 0.02], after adjusting for possible confounding factors. Findings suggest an independent and protective effect of prenatal folic acid and iron supplementation for atopic dermatitis in children. [ABSTRACT FROM AUTHOR]

Purpose: Although previous studies have demonstrated the efficacy of rehabilitation programs for brain tumor (BT) patients and the positive impact on quality of life of functional gain, there are few studies focusing on specific rehabilitation management of brain tumor patients.Methods: With the aim to evaluate the pattern of rehabilitation care and health services utilization in patients with brain tumor, we retrospectively analyzed administrative data on a large cohort of brain tumor patients diagnosed during the period 2008-2009 in the Lazio Region. Pattern of rehabilitation care was analyzed during a follow-up of 12 months after diagnosis. Data for this study were gathered and linked from two sources: (1) hospital discharge records stored into the Lazio Regional Health System database and (2) rehabilitation pathways database including inpatient and outpatient interventions files.Results: We identified 789 patients with an ICD-9-CM code of 191.** in the Regional Health System databases in the study period. Among 719 patients included in this study, 92 (12.8 %) were treated with inpatient rehabilitation program, 22 (3.1 %) received an outpatient personalized program with intensive rehabilitation plan, and 85 (11.8 %) received outpatients rehabilitation interventions.Conclusions: Our retrospective analysis on the rehabilitation service utilization in a large cohort of BT patients shows that a limited number of patients received rehabilitation interventions during the first year after diagnosis. Nevertheless, the rehabilitation needs in BT patients are largely unmet and the lack of defined physical and cognitive rehabilitation strategies may negatively affect the functional independence and the short- and long-term quality of life. [ABSTRACT FROM AUTHOR]

Unlabelled: A study was conducted with 542 women, who gave birth in the hospital G.B. Grassi in Rome, to investigate risk factors for exclusive breastfeeding. Clinical data was collected from clinical records at delivery. Information on psycho-socio-demographic characteristics was obtained by standardized questionnaires at delivery. Data on breastfeeding practice and the use of pacifier were collected at delivery and for 24 weeks' postpartum. The outcome of the study was exclusive breastfeeding for at least 4 months (yes/no). In the multivariate analysis, planned caesarean (OR 2.40, 95 % CI 1.06-5.43) and women with two or more psychological distress conditions (past episodes of depression, insomnia, perceive birth as a traumatic event) versus none were at a greater odds of stopping exclusive breastfeeding before 4 months (OR 3.42, 95 % CI 1.15-10.2). The use of pacifiers within the first 2 weeks postpartum (OR 2.38, 95 % CI 1.35-4.20) but not after 2 weeks (OR 0.86, 95 % CI 0.43-1.72) versus no use was also associated with an increased odds. A protective effect was found for antenatal classes (OR 0.57, 95 % CI 0.35-0.95).Conclusion: This study suggests that the type of delivery, antenatal classes, psychological distress conditions and the use of pacifiers in the first 2 weeks of a baby's life are independent factors associated with exclusive breastfeeding. [ABSTRACT FROM AUTHOR]

Fuzzy clustering enables the simultaneous membership of objects in two or more clusters. This is particularly pertinent where time series are concerned, because very often patterns of time series change over time. Thus, a time series might belong to different clusters over different periods of time, in which case, crisp clustering is unable to capture this multi-cluster membership. In this paper, we adopt a Fuzzy C-Medoids approach to clustering time series based on autoregressive estimates of models fitted to the time series. We illustrate very good performance of this approach in a range of simulation studies. By means of two applications, we also show the usefulness of this clustering approach in the air pollution monitoring, by considering air pollution time series, i.e., CO time series, CO time series and NO time series monitored on world and urban scales. In particular, we show that, by considering in the clustering process, the autoregressive representation of these air pollution time series, we are able to detect possible information redundancy in the monitoring networks and then, decreasing the number of monitoring stations, to reduce the monitoring costs and then to increase the monitoring efficiency of the networks. [ABSTRACT FROM AUTHOR]

Abstract The purpose of this study was to compare two different methods to describe C-section variability among hospital units: case-mix adjusted ORs and case-mix adjusted rates. [ABSTRACT FROM AUTHOR]

It has been proposed that transcription introduces a bias into the random process of mutation. Although this hypothesis is supported by experimental data for mutations arising during active bacterial growth, the role of transcription in mutagenesis in non-dividing bacteria is entirely hypothetical. In the present study, we tested the hypothesis of a possible role of transcription in a non-dividing E . coli K12 strain. In this strain (BD010), a mutated trpB allele ( trpB9578), placed under stringent transcriptional control, was tested for the appearance of prototrophic revertants on synthetic medium lacking tryptophan. The number of phenotypic revertants which appeared in the absence of trp transcription was compared to that observed when the mutated gene was continuously transcribed. Our results showed that transcription of trpB is not mutagenic under conditions of tryptophan starvation, and that the frequency of TrpB + reversion is solely a function of the duration of starvation. [ABSTRACT FROM AUTHOR]

Objective: To determine which factors contribute to the decision to admit individuals to psychiatric wards in general hospitals.Method: Data on 1,379 individuals undergoing psychiatric evaluation in eight emergency rooms in a region of central Italy were collected. A logistic regression analysis was used to evaluate the likelihood of psychiatric admission considering the independent effects of demographic, social, and clinical factors and of the history of psychiatric treatment.Results: The adjusted odds ratio for psychiatric admission significantly increased with the following variables: severity of symptoms; presence of paranoid states and schizophrenic psychoses, affective psychoses and acute psychotic conditions (with neurotic disorders used as reference); a history of outpatient treatment; the presence of a staff member of a community mental health facility upon presentation at the emergency room; and the availability of beds in the psychiatric ward.Conclusion: The independent effect played by the presence of a staff member of a community mental health facility is of particular interest, suggesting the existence of a collaborative relationship between inpatient and outpatient services. [ABSTRACT FROM AUTHOR]