The Role of Family Resilience and Pandemic Burnout on Mental Health: A Two-Wave Study in China

Family resilience refers to the processes through which a family adapts to and bounces back from adversities. Pandemic burnout refers to feeling emotionally exhausted, cynical, and lack of accomplishment during the pandemic and/or toward various preventive polices and measures. This two-wave, region-wide, longitudinal study included 796 adult participants residing in mainland China. Participants completed online surveys at two time points during the COVID-19 pandemic. Time 1 (T1) survey was conducted when the number of new infected cases in China stabilized, while Time 2 (T2) was conducted 5 months later when there was a sudden surge of new infected cases. Results of a hierarchical regression analysis revealed that the interaction and main effects of pandemic burnout and family resilience at T2 showed significant incremental prediction of depression and anxiety at T2, after controlling for demographic as well as individual and family resilience at T1. These results supported the hypotheses that current family resilience functions as a protective factor, whereas pandemic burnout functions as a risk factor of mental health during successive waves of pandemic outbreaks. In particular, family resilience at T2 mitigated the negative impact of high pandemic burnout on anxiety and depression at T2.

"It Is My Choice to Control Myself!": Testing the Mediating Roles of Expectancy and Value in the Association Between Perceived Choice and Self-Control Success

Past research suggested that when individuals feel that it is their free choice to perform a task, they are more likely to succeed. However, little has been known about the effect of perceived choice of self-control and the psychological processes underlying the benefits of this perception in everyday contexts. To fill this gap, a 7-day experience sampling study (115 college students and 1,725 reported episodes of self-control) was conducted to test whether confidence in sustaining the current self-control activity (expectancy) and perceived value of current self-control (value) could mediate the link between perceived choice and success in the current self-control activity. The results of multilevel analysis suggested that the perceived choice can boost self-control success by increasing expectancy and value of self-control. These findings add mechanistic understanding of the effect of perceived choice on self-control success.

Family Resilience Scale Short Form (FRS16): Validation in the US and Chinese Samples

Family resilience, which refers to the processes through which a family adapts to and thrives from adversities, has growing importance in recent years. In response to the need for further research on family resilience, the present research aims to abbreviate and validate Sixbey's Family Resilience Assessment Scale (FRAS) into a 16-item version Family Resilience Scale Short Form in the US (FRS16) and Chinese (FRS16_C) samples. The samples included 1,236 (Study 1) and 1,135 (Study 2) participants from the US and China, respectively. Results of confirmatory factor analysis (CFA) supported the proposed three-factor structure of FRS16: Family Communication and Connectedness, Positive Framing, and External Support across two samples. Overall, the reliability and validity of full and subscales of FRS16 and FRS16_C were satisfactory. Multi-group CFA revealed that both configural and metric invariance are supported, suggesting that participants in the US and Chinese samples assign comparable meaning to the latent factors of FRS16. Results suggested that FRS16 and FRS16_C are valid instruments for family resilience in the US and Chinese samples.

Coping with my own way: Mediating roles of emotional expression and social support seeking in the associations between individual differences and posttraumatic growth

This study examined the associations between individual differences and posttraumatic growth, and coping strategies as mediators among 454 trauma-exposed American college students. Results showed that relational-interdependent self-construal, optimism, emotional expression, and social support seeking were associated with higher posttraumatic growth. Moreover, social support seeking and emotional expression partially mediated between relational-interdependent self-construal and posttraumatic growth, such that relational-interdependent self-construal was associated with posttraumatic growth through increased support seeking and emotional expression. However, the association between optimism and posttraumatic growth was partially mediated only by increased emotional expression, but not social support seeking. Findings imply that individual differences may facilitate posttraumatic growth through different coping mechanisms.

Nature Does Not Always Give You a Helping Hand: Comparing the Prosocial Effects of Nature at Different Resource and Security Levels

Humans become more prosocial after nature exposure. We proposed that the prosocial effect pertains to resource (e.g., food, water) and security (e.g., shelter, concealment) features in natural environments. Four studies tested the idea that prosociality changes with variations in environmental resource and security. Study 1 reported that urban greenspace, a resource feature to urban dwellers, predicted more volunteering in low-crime cities, but less so in high-crime cities. Studies 2 and 3 compared prosociality after exposure to natural sceneries in a Resource (high/low) × Security (high/low) design. Participants were more prosocial in the high-resource-high-security and low-resource-low-security conditions. Study 4 compared the four natural environments with two control conditions (urban, shape). It reported that not all natural environments led to higher prosociality, nor did any of them undermine prosociality. The findings supported heterogeneity in nature's prosocial effect. Implications are discussed in relation to urban greening and the evolutionary basis of nature's effect.

Filariasis in axillary lymph node

A case of adult filarial worms detected in an axillary lymph node of an asymptomatic patient. A 64 year-old Indian female underwent a mammogram and was incidentally found to have punctate microcalcifications in the upper outer quadrant of the left breast with left axillary lymphadenopathy. She has underlying hypertension and diabetes mellitus on oral medications. She has no family history of breast malignancy. Fine needle aspiration of the left axillary lymph node was suggestive of reactive lympha-denitis. Histopathological examination of excisional biopsy of left breast lump showed fibrocystic disease; no evidence of malignancy was detected whereas excisional biopsy of left axillary lymph node showed reactive lymphoid hyperplasia, featuring variably sized lymphoid follicles with intact mantle zone. No expansion of marginal zone was noted. Occasional pigment-laden macrophages were seen. One of the lymph node showed presence of calcified serpinginous tubular bodies, in keeping with non viable parasite organisms with intact outlines of the structures. There were no eosinophilic infiltrates. The possibility of filarial infestation was suspected. Histopathological sample was sent for further identification and confirmed the presence of adult filarial worm.

The effects of environmental resource and security on aggressive behavior

Exposure to different environments has been reported to change aggressive behavior, but previous research did not consider the underlying elements that caused such an effect. Based on previous work on environmental perception, we examined the role of environmental resource and security in altering aggression level. In three experiments, participants were exposed to environments that varied in resource (High vs. Low) and security (High vs. Low) levels, after which aggression was measured. The environments were presented through visual priming (Experiments 1-2) and a first-person gameplay (Experiment 3). We observed a consistent resource-security interaction effect on aggression, operationalized as the level of noise blast (Experiment 1) and number of unpleasant pictures (Experiments 2-3) delivered to strangers by the participants. High resource levels associated with higher aggression in insecure conditions, but lower aggression in secure conditions. The findings suggest that the adaptive value of aggression varies under different environmental constraints. Implications are discussed in terms of the effects of adverse environments on aggression, and the nature's effects on social behavior. Aggr. Behav. 43:304-314, 2017. © 2016 Wiley Periodicals, Inc.

Blind equalization of a noisy channel by linear neural network

In this paper, a new neural approach is introduced for the problem of blind equalization in digital communications. Necessary and sufficient conditions for blind equalization are proposed, which can be implemented by a two-layer linear neural network. In the hidden layer, the received signals are whitened, while the network outputs provide directly an estimation of the source symbols. We consider a stochastic approximate learning algorithm for each layer according to the property of the correlation matrices of the transmitted symbols. The proposed class of networks yield good results in simulation examples for the blind equalization of a three-ray multipath channel.

Shape recovery from shading by a new neural-based reflectance model

In this paper, we present a neural-based reflectance model of which the physical parameters of the reflectivity under different lighting conditions are interpreted by the network weights. The idea of our method is to optimize a proper reflectance model by an effective learning algorithm and to recover the object surface by a simple shape from shading recursive algorithm with this resulting model. Experimental results, including synthetic and real images, were performed to demonstrate the performance of the proposed method for practical applications.

Learning parametric specular reflectance model by radial basis function network

For the shape from shading problem, it is known that most real images usually contain specular components and are affected by unknown reflectivity. In this paper, these limitations are addressed and a new neural-based specular reflectance model is proposed. The idea of this method is to optimize a proper specular model by learning the parameters of a radial basis function network and to recover the object shape by the variational approach with this resulting model. The obtained results are very encouraging and the performance is demonstrated by using the synthetic and real images in the case of different specular effects and noisy environments.

Photocatalytic degradation of di(2-ethylhexyl)phthalate adsorbed by chitin A

Di(2-ethylhexyl)phthalate (DEHP) is a ubiquitous environmental contaminant due to its extensive use as a plasticiser and its persistence. Currently, there is no cost-effective treatment method for its removal from industrial wastewater. In a previous study, DEHP was effectively adsorbed from aqueous solution by biosorption onto chitinous materials. Biosorption can pre-concentrate DEHP from the aqueous phase for further treatment. As biosorption cannot degrade DEHP, in this study the degradation (and detoxification) of DEHP adsorbed onto chitinous material by photocatalytic oxidation (PCO) is attempted. PCO relies on hydroxyl radical (.OH), which is a strong oxidising agent, for the oxidative degradation of pollutants. It is a non-selective process which can degrade DEHP adsorbed onto chitinous material. The first part of this study is the optimisation of the degradation of adsorbed DEHP by PCO. Adsorption was carried out in the physicochemical conditions optimised in the previous study, with 500 mg/L chitin A and 40 mg/L DEHP at initial pH 2, 22+/-2 degrees C and 150 rpm agitation for 5 min. After optimisation of PCO, a 61% removal efficiency of 10 mg/L of DEHP was achieved within 45 min under 0.65 mW/cm2 of UV-A with 100 mg/L TiO2, and 10 mM of H2O2 at initial pH 12. The optimisation study showed that UV-A and TiO(2) are essential for the degradation of DEHP by PCO. The degradation intermediates/products were identified by GC-MS analysis. GC-MS results showed that the di(2-ethylhexyl) side chain was first degraded, producing phthalates with shorter side chains. Further reaction produced phathalic anhydride and aliphatic compounds such as alkanol and ester. The toxicities of parental and degradation intermediates in the solution phase and on chitinous materials were followed by the Microtox test. Results indicated that toxicity can be removed after 4 h treatment by PCO. Thus the decontamination of DEHP by integrating biosorption and PCO is feasible.

Nanoadhesion between rough surfaces

A model is developed to describe the adhesion between deformable fractal surfaces over the mesoscopic realm that covers the familiar range of interest in nanotechnology from atomic dimensions to microns. This model helps us gain a quantitative understanding of the variation of adhesion with surface energy, with microstructure of rough surfaces, and with bulk deformability. The present analysis goes beyond the Gaussian distribution of asperity heights by investigating the influence of the microstructure of self-affine fractal surfaces. Our calculation reveals that orders of magnitude increase in adhesion are possible as the roughness exponent decreases.

Fluctuations in dispersion rheology

On the basis of the mesoscopic fluctuations of excess density, an experimentally verified model is developed to describe the effective shear viscosity and modulus of complex dispersions as a function of concentration, frequency, and temperature. A stochastic differential equation is used in the derivation of the zero-shear viscosity that shows large viscosity enhancement over a broad range of concentrations. The scaling behavior of shear thinning is determined from an anomalous diffusion equation. We obtain the shear-thinning exponent 1>beta>1 / 2, which depends on the tenuous fractal structure of the complex systems. The divergence of the shear viscosity in the vicinity of a critical temperature is derived as a dynamic critical phenomenon due to thermal fluctuations, and the critical exponent relates directly to the shear-thinning exponent.

Unusual foreign body causing quadriparesis: case report

OBJECTIVE AND IMPORTANCE

An unusual foreign body traversing the spinal canal at the foramen magnum level is described. Interesting radiological findings and a review of nonmissile penetrating injuries are presented. This case demonstrates the importance of a thorough physical examination and the use of neurodiagnostic imaging in an inebriated, uncooperative patient with neurological dysfunction.

CLINICAL PRESENTATION

The patient presented with quadriparesis confounded by cocaine intoxication. A physical examination revealed only a small punctate lesion in the posterior occipital region.

INTERVENTION

After detection of the foreign body, the patient underwent immediate surgical exploration and removal of the object. The dura was repaired primarily, and the patient was maintained on intravenous antibiotics for 7 days.

CONCLUSION

With physical therapy, the patient was walking with assistance at 2 weeks postsurgery. Upper extremity strength, especially intrinsic hand movement, was most severely affected. At 10 months' follow-up, the patient's only deficits were mild intrinsic hand weakness and incoordination with fine finger movements. Immediate surgical exploration is indicated for patients with retained fragments and progressive neurological dysfunction.

The surgical treatment of metastatic spinal tumors within the intradural extramedullary compartment

The authors retrospectively reviewed the surgical outcomes in 10 cases of symptomatic intradural extramedullary spinal metastases of nonneurogenic origin because the collective experience in treating this rare manifestation of systemic cancer is limited. Pain and weakness were the presenting complaints in 70% of the patients and sensory changes were found in all cases. Cytological tests on one specimen of cerebrospinal fluid (CSF) from each of seven patients showed malignant cells in two cases. Gadolinium contrast-enhanced biplanar magnetic resonance (MR) imaging was effective in localizing the lesion and showed evidence of leptomeningeal carcinomatosis in two cases; myelography showed leptomeningeal carcinomatosis in one case and erroneously identified the lesion as intramedullary in the other. Eight of 10 cases had antecedent intracranial metastatic foci with the interval from presentation of the intracranial lesion to appearance of the spinal disease ranging from 3 to 51 months. The majority of the spinal lesions occurred in the thoracolumbar area. The most frequent histological type was adenocarcinoma and the most frequent source was the lung. In all cases laminectomies, intradural exploration, and biopsy or subtotal excision aided by microscopy and ultrasonography were performed. Results of surgical decompression were poor with only 30% of the patients showing improvement, at a 20% risk of perioperative mortality and a 60% risk of morbidity. Plans for surgical intervention in patients with intradural extramedullary metastases from a distant noneurogenic source should be weighed against the high association with intracranial lesions, overall poor prognosis, and modest symptomatic results of decompression. Comprehensive evaluation including multiple specimens of CSF for cytology and contrast-enhanced MR imaging should be undertaken to exclude patients with diffuse leptomeningeal involvement, who should be treated by means other than surgery.