Miracle-dz/UniFAR-FTUs huggingface dataset:
Improving the Accuracy of Spiking Neural Networks for Radar Gesture Recognition Through Preprocessing

Event-based neural networks are currently being explored as efficient solutions for performing AI tasks at the extreme edge. To fully exploit their potential, event-based neural networks coupled to adequate preprocessing must be investigated. Within this context, we demonstrate a 4-b-weight spiking neural network (SNN) for radar gesture recognition, achieving a state-of-the-art 93% accuracy within only four processing time steps while using only one convolutional layer and two fully connected layers. This solution consumes very little energy and area if implemented in event-based hardware, which makes it suited for embedded extreme-edge applications. In addition, we demonstrate the importance of signal preprocessing for achieving this high recognition accuracy in SNNs compared to deep neural networks (DNNs) with the same network topology and training strategy. We show that efficient preprocessing prior to the neural network is drastically more important for SNNs compared to DNNs. We also demonstrate, for the first time, that the preprocessing parameters can affect SNNs and DNNs in antagonistic ways, prohibiting the generalization of conclusions drawn from DNN design to SNNs. We demonstrate our findings by comparing the gesture recognition accuracy achieved with our SNN to a DNN with the same architecture and similar training. Unlike previously proposed neural networks for radar processing, this work enables ultralow-power radar-based gesture recognition for extreme-edge devices.
Accuracy and applicability of non-invasive evaluation of aortic wave intensity using only pressure waveforms in humans

Background. Wave intensity (WI) analysis is a well-established method for quantifying the energy carried in arterial waves, providing valuable clinical information about cardiovascular function. The primary drawback of this method is the need for concurrent measurements of both pressure and flow waveforms. Objective. We have for the first time investigated the accuracy of a novel methodology for estimating wave intensity employing only single pressure waveform measurements; we studied both carotid- and radial-based estimations in a large heterogeneous cohort. Approach. Tonometry was performed alongside Doppler ultrasound to acquire measurements of both carotid and radial pressure waveforms as well as aortic flow waveforms in 2640 healthy and diseased participants (1439 female) in the Framingham Heart Study. Patterns consisting of two forward waves (Wf1, Wf2) and one backward wave (Wb1) along with reflection metrics were compared with those obtained from exact WI analysis. Main Results. Carotid-based estimates correlated well for forward peak amplitudes (Wf1, r = 0.85, p < 0.05; Wf2, r = 0.72, p < 0.05) and peak time (Wf1, r = 0.94, p < 0.05; Wf2, r = 0.98, p < 0.05), and radial-based estimates correlated fairly to poorly for amplitudes (Wf1, r = 0.62, p < 0.05; Wf2, r = 0.42, p < 0.05) and peak time (Wf1, r = 0.04, p = 0.10; Wf2, r = 0.75, p < 0.05). In all cases, estimated Wb1 measures were not correlated. Reflection metrics were well correlated for healthy patients ( r = 0.67, p < 0.05), moderately correlated for valvular disease ( r = 0.59, p < 0.05) and fairly correlated for CVD ( r = 0.46, p < 0.05) and heart failure ( r = 0.49, p < 0.05). Significance. These findings indicate that pressure-only WI produces accurate results only when forward contributions are of primary interest and only for carotid pressure waveforms. The pressure-only WI estimations of this work provide an important opportunity to further the goal of uncovering clinical insights through wave analysis affordably and non-invasively.
Characteristics associated with the discrepancy between subjective and objective executive functioning in depression

Abstract Major depressive disorder (MDD) is associated with both self-reported (subjective) cognitive complaints and deficits in neurocognitive (objective) measures, but the correspondence between subjective and objective measures of cognition is low. This cross-sectional study aimed to (1) assess the association between subjective and objective measures of executive functions (EFs), and (2) explore factors associated with the discrepancy between subjective and objective EFs in MDD. Sixty-two participants with current or previous mild to moderate MDD and subjective EF complaints completed a clinical trial baseline assessment. An objective EF composite score was drawn from six neurocognitive measures, while the Behavior Rating Inventory of Executive Function-Adult version was applied as a measure of subjective EF. The association between the subjective and objective composites was evaluated using Spearman’s rank order correlation. A discrepancy score was calculated to quantify the difference between subjective and objective EF. Factors associated with the discrepancy score were analyzed using regression analysis (p < .05). Participants reported extensive EF difficulties, but most performed in the normal range on objective EF measures. A weak correlation was detected between the subjective and objective measures (r s = .015). More rumination (β = −.364) and higher IQ (β = −.420) were associated with reporting more subjective complaints than was evident from objective measures of EF (i.e., underestimation). Subjective and objective EF measures are weakly overlapping in MDD. Findings underscore recommendations to include both subjective and objective measures when assessing EFs in depression. In addition, findings suggest that targeting ruminative processes could help correct underestimation.
Dopamine regulates adult neurogenesis in the ventricular‐subventricular zone via dopamine D3 angiotensin type 2 receptor interactions

Adult neurogenesis is a dynamic and highly regulated process, and different studies suggest that dopamine modulates ventricular‐subventricular zone (V‐SVZ) neurogenesis. However, the specific role of dopamine and the mechanisms/factors underlying its effects on physiological and pathological conditions such as Parkinson's disease (PD) are not fully understood. Recent studies have described counter‐regulatory interactions between renin‐angiotensin system (RAS) and dopamine in peripheral tissues and in the nigrostriatal system. We have previously demonstrated that angiotensin receptors regulate proliferation and generation of neuroblasts in the rodent V‐SVZ. However, possible interactions between dopamine receptors and RAS in the V‐SVZ and their role in alterations of neurogenesis in animal models of PD have not been investigated. In V‐SVZ cultures, activation of dopamine receptors induced changes in the expression of angiotensin receptors. Moreover, dopamine, via D2‐like receptors and particularly D3 receptors, increased generation of neurospheres derived from the V‐SVZ and this effect was mediated by angiotensin type‐2 (AT2) receptors. In rats, we observed a marked reduction in proliferation and generation of neuroblasts in the V‐SVZ of dopamine‐depleted animals, and inhibition of AT1 receptors or activation of AT2 receptors restored proliferation and generation of neuroblasts to control levels. Moreover, intrastriatal mesencephalic grafts partially restored proliferation and generation of neuroblasts observed in the V‐SVZ of dopamine‐depleted rats. Our data revealed that dopamine and angiotensin receptor interactions play a major role in the regulation of V‐SVZ and suggest potential beneficial effects of RAS modulators on the regulation of adult V‐SVZ neurogenesis.
Improving the optical performance of the nanostructured starch-calcium carbonate hybrid pigments

This work presents a method to produce hybrid pigments from unmodified starch and precipitated calcium carbonate (PCC) to be used as a papermaking additive. The hybrid pigments are composed of a layer of 20-200 nm PCC crystallites on top of a starch granule which has been partially dissolved. The preparation procedure consists of starch activation, co-precipitation i.e. encapsulation of starch granules with PCC followed by heating to hydrate and dissolve the starch. In this article, the effects of starch origin, activation temperature and content as well as the precipitation variables are examined to optimize the properties of the hybrid pigments when applied in paper. The proper activation of the granules was a key variable for successful encapsulation and determined the retention of starch in the pigment structure after cooking. Different crystal structures could be precipitated on top of the granules and the hybrid pigment size could be decreased by changing from corn to rice starch. The starch content, origin of starch and precipitation conditions were found to be crucial for the paper properties.
Accumulation of the Major Components from Polygoni Multiflori Radix in Liver and Kidney after Its Long-Term Oral Administrations in Rats

Abstract Although Polygoni Multiflori Radix (PMR) has been widely used as a tonic and an anti-aging remedy for centuries, the extensively reported hepatotoxicity and potential kidney toxicity hindered its safe use in clinical practice. To better understand its toxicokinetics, the current study was proposed, aiming to evaluate the biodistributions of the major PMR components including 2,3,5,4′-tetrahydroxystilbene-2-O-β-D-glucopyranoside (TSG), emodin, emodin-8-O-β-D-glucopyranoside (EMG) and physcion as well as their corresponding glucuronides following bolus and multiple oral administrations of PMR to rats. Male Sprague-Dawley rats received a bolus dose or 21 days of oral administrations of PMR concentrated granules at 4.12 g/kg (equivalent to 20.6 g/kg raw material). Fifteen minutes after bolus dose or the last dose on day 21, rats were sacrificed and the blood, liver, and kidney were collected for the concentration determination of both parent form and glucuronides of TSG, emodin, EMG, and physcion by HPLC-MS/MS. Among all the tested analytes, TSG, EMG, EMG glucuronides in liver and TSG, EMG, as well as all the glucuronides of these analytes in the kidney demonstrated the most significant accumulation after multiple doses. Moreover, the levels of the parent analytes were all significantly higher in liver and kidney in comparison to their plasma levels. Strong tissue binding of all four analytes and accumulation of TSG, EMG, and EMG glucuronides in the liver and TSG, EMG, as well as the glucuronides of all four analytes in the kidney after multiple dosing of PMR were considered to be associated with its toxicity.
Relationship Between Timing of Anterior Cruciate Ligament Reconstruction and Chondral Injuries: A Systematic Review and Meta-analysis

Background: After anterior cruciate ligament (ACL) injury, the optimal timing of ACL reconstruction and the influence of this timing on chondral damage remain unclear. Purpose: To assess the effect of timing of ACL reconstruction on the presence of chondral injuries via a systematic review and meta-analysis. Study Design: Systematic review and meta-analysis; Level of evidence, 4. Methods: Two reviewers independently performed systematic literature searches of 5 online databases using the Cochrane methodology for systematic reviews. Eligibility criteria were any comparative study of patients aged >16 years that assessed the relationship between timing of primary ACL reconstruction surgery and rates of chondral injuries. Meta-analysis was conducted using a random-effects model. Results: After screening, 14 studies (n = 3559 patients) out of 2363 titles met the inclusion criteria: 3 randomized controlled trials (n = 272), 3 prospective cohort studies (n = 398), and 8 retrospective cohort studies (n = 2889). In analysis of the studies, chondral injury rates were compared between ACL reconstructions performed before and after 3 time points: 3, 6, and 12 months after injury (eg, ≤3 vs >3 months). The rates of chondral injury increased with each time point. The increase was mostly due to low-grade injuries at 3 months (estimated odds ratio, 1.914; 95% CI, 1.242-2.949; P = .003), with the increase in high-grade injuries becoming predominant after 12 months (estimated odds ratio, 3.057; 95% CI, 1.460-6.40; P = .003). Conclusion: Our findings suggest that delaying ACL reconstruction surgery results in a higher rate of chondral injuries and the severity of these lesions worsens with time. These findings are comparable with those of our previously published study, which demonstrated a higher risk of meniscal tears associated with delayed ACL surgery. When ACL reconstruction is indicated, surgery ≤3 months after injury is associated with a lower risk of intra-articular damage. Registration: CRD42016032846 (PROSPERO).
Understanding the financial burden of incomplete abortion: An analysis of the out-of-pocket expenditure on postabortion care in eight public-sector health care facilities in Dakar, Senegal

ABSTRACT Timely access to treatment is essential for women when they experience abortion complications. Out-of-pocket (OOP) expenditure is a known barrier to health care access. In 2018, we assessed the financial burden of accessing postabortion care (PAC) borne by women in Dakar, Senegal, where studies estimate that half of poor women with complications obtain PAC. We interviewed 729 women following discharge from PAC. Women reported expenditures on transportation, admission, treatment, family planning, hospitalisation, complementary tests, prescriptions, other medicines and materials. We compare women’s OOP on PAC by expenditure category, type of treatment and facility type, and use multiple generalised linear regression analysis to explain variation in overall OOP and forecast it under alternate scenarios. The average OOP was USD $93.84. At health centres it was $65.47 and at hospitals it was $120.47. The average cost of PAC using dilation and curettage was $112.37, manual vacuum aspiration was $99.84, and misoprostol $61.80. Overall OOP on PAC amounts, on average, to 15% of the average monthly salary for women living in Dakar. Strategies that emphasise timely access to misoprostol for treating complications in primary care settings will address the contribution of OOP costs to Senegal’s appreciable unmet need for PAC among the poor.
How do age and social environment affect the dynamics of death hazard and survival in patients with breast or gynecological cancer in France?

Several studies have investigated the association between net survival (NS) and social inequalities in people with cancer, highlighting a varying influence of deprivation depending on the type of cancer studied. However, few of these studies have accounted for the effect of social inequalities over the follow‐up period, and/or according to the age of the patients. Thus, using recent and more relevant statistical models, we investigated the effect of social environment on NS in women with breast or gynecological cancer in France. The data were derived from population‐based cancer registries, and women diagnosed with breast or gynecological cancer between 2006 and 2009 were included. We used the European deprivation index (EDI), an aggregated index, to define the social environment of the women included. Multidimensional penalized splines were used to model excess mortality hazard. We observed a significant effect of the EDI on NS in women with breast cancer throughout the follow‐up period, and especially at 1.5 years of follow‐up in women with cervical cancer. Regarding corpus uteri and ovarian cancer patients, the effect of deprivation on NS was less pronounced. These results highlight the impact of social environment on NS in women with breast or gynecological cancer in France thanks to a relevant statistical approach, and identify the follow‐up periods during which the social environment may have a particular influence. These findings could help investigate targeted actions for each cancer type, particularly in the most deprived areas, at the time of diagnosis and during follow‐up.
Mechanisms through which executive dysfunction influences suicidal ideation in combat-exposed Iraq and Afghanistan veterans

Abstract Objective: Executive dysfunction has previously been associated with suicidality, but it remains unclear how deficits in executive functioning contribute to increased suicidal thoughts and behaviors. Although it has been proposed that poorer executive functioning leads to difficulty generating and implementing appropriate coping strategies to regulate distress and inhibit suicidal thoughts and behaviors, studies have not systematically examined these relationships. Therefore, the present study examined various hypotheses to elucidate the mechanisms through which executive dysfunction influences suicidal ideation (SI) in combat-exposed Iraq/Afghanistan veterans. Method: Veterans who endorsed SI were compared to those who denied SI on demographic and diagnostic variables and measures of neuropsychological functioning, psychological symptoms, coping styles, and combat experiences. Serial mediation models were tested to examine mechanistic relationships among executive functioning, psychological distress, coping, and SI. Results: Those who endorsed SI had worse executive functioning, greater psychological distress, and greater avoidant coping relative to those who denied SI. Serial mediation model testing indicated a significant indirect path, such that executive dysfunction increased psychological distress, which in turn increased avoidant coping, leading to SI. Conclusions: Findings support and extend previous hypotheses regarding how executive functioning contributes to increased risk of suicidality via increased distress and avoidant coping. Intervention efforts focused on reducing suicidality may benefit from techniques that enhance executive functioning (e.g. computerized training, cognitive rehabilitation) and in turn reduce distress prior to targeting coping strategies.
Stressful life events and transitions in problematic alcohol use involvement among US adults

Abstract Objective We investigated the impact of stressful life events (SLEs) for males and females on transitions in problematic alcohol involvement, both progression and recovery, over a 3-year interval. Method Participants of both Wave 1 (2001–2002) and Wave 2 (2004–2005) of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) were stratified by sex (14,233 males and 19,550 females). Latent transition analysis estimated the impact of experiencing ≥3 SLE in the year preceding the Wave 1 interview on the probability of transitioning between three empirically-derived stages of alcohol involvement (patterns of alcohol use disorder [AUD] symptoms), across waves. Propensity score methods adjusted for confounding. Results For males, three or more SLEs were associated with progression from the moderate to the severe problem stage (odds ratio [OR] = 2.23, 95% confidence interval [CI] = 1.17, 4.26). Among those in the severe problem stage, SLEs negatively impacted recovery regardless of sex. Employment/Financial SLEs were associated with a higher odds of transition from the moderate to the no problem stage (OR = 1.60, 95% CI = 1.03, 2.46) and lower odds of transitions from the severe to the moderate problem stage (OR = 0.40, 95% CI = 0.16, 0.99) among males, and from the severe to the no problem stage (OR = 0.26, 95% CI = 0.07, 0.88) among females. Conclusion Stressful life events appear to affect transitions in alcohol involvement over time among those who already have alcohol problems, rather than impacting a transition among those without AUD problems.
A novel bivalent chromatin associates with rapid induction of camalexin biosynthesis genes in response to a pathogen signal in Arabidopsis

Temporal dynamics of gene expression underpin responses to internal and environmental stimuli. In eukaryotes, regulation of gene induction includes changing chromatin states at target genes and recruiting the transcriptional machinery that includes transcription factors. As one of the most potent defense compounds in Arabidopsis thaliana, camalexin can be rapidly induced by bacterial and fungal infections. Though several transcription factors controlling camalexin biosynthesis genes have been characterized, how the rapid activation of genes in this pathway upon a pathogen signal is enabled remains unknown. By combining publicly available epigenomic data with in vivo chromatin modification mapping, we found that camalexin biosynthesis genes are marked with two epigenetic modifications with opposite effects on gene expression, trimethylation of lysine 27 of histone 3 (H3K27me3) (repression) and acetylation of lysine 18 of histone 3 (H3K18ac) (activation), to form a previously uncharacterized type of bivalent chromatin. Mutants with reduced H3K27me3 or H3K18ac suggested that both modifications were required to determine the timing of gene expression and metabolite accumulation at an early stage of the stress response. Our study indicates that the H3K27me3-H3K18ac bivalent chromatin, which we name as kairostat, plays an important role in controlling the timely induction of gene expression upon stress stimuli in plants.
Risk Factors Associated with Aggravation of Cervical Spine Lesions in Patients with Rheumatoid Arthritis

This retrospective cohort study investigated risk factors for severe aggravation of preexisting cervical lesions in 87 patients with rheumatoid arthritis. Preexisting SAS lesions and no history of biologic treatment were identified as risk factors for severe aggravation. Study Design. A retrospective cohort study. Objective. To examine factors related to severe aggravation of preexisting cervical lesions in patients with rheumatoid arthritis (RA) under current pharmacologic treatments with biologics. Summary of Background Data. Advanced RA cervical lesions carry a risk of irreversible damage to the spinal cord; however, risk factors for aggravation are unclear after the use of biologics became more popular. Methods. Of 166 patients with preexisting cervical lesions at baseline, 87 who had cervical X-ray images taken at baseline and at the final visit (with an interval of more than 1 yr) were evaluated retrospectively. Aggravated instabilities determined at the final visit, were defined as follows: atlantoaxial subluxation (AAS) = atlantodental interval ≧ 10 mm; vertebral subluxation (VS) = a Ranawat value < 10 mm; and subaxial subluxation (SAS) = an anterior vertebral slip ≧ 4 mm or a multilevel slip ≧ 2 mm. Patients were divided into two groups based on the radiographic results: severe aggravation and non-severe aggravation. Explanatory variables were gender, age of RA onset, duration of disease, average observation period, Disease Activity Score 28 based on C-reactive protein (DAS28-CRP) at baseline, drug treatment history, presence of mutilating deformities in the hands, presence of RA-related joint surgery, and the prevalence of each cervical lesion at baseline. Results. The severe group comprised 14 patients (16.1%). There was no significant difference between the two groups with respect to demographic data. Multivariate logistic regression analysis revealed that preexisting SAS lesions (odds ratio: 7.59, 95% confidence interval: 1.16–49.6) and no history of biologic treatment (odds ratio, 0.10; 95% confidence interval, 0.17–0.58) were associated with aggravation. Conclusion. Preexisting SAS lesions were associated with aggravation. Meanwhile, biologics may be effective at preventing aggravation. Level of Evidence: 3