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As older adults get older, their bodies deteriorate. A large proportion of the elderly population experiences decreased attention and memory failure. Through the intervention of music, the memory of the elderly can be improved to some extent, which is of great help to their physical and mental health. In this paper, a visual music therapy rehabilitation system was designed in which the cloud processing module performs physiological signal normalization, feature extraction of heart rate variability patterns, neural network‐based emotional state classification, and data storage for adaptive visual music intervention. When the system detected a change in old people's emotions, the subsystem judged the current model of people's expressions and transmitted the results to the server subsystem, which normalized the data and afterward sent it to the visualization subsystem. The visualization subsystem loaded the corresponding music file based on the server's data and generated a dynamic video to relieve the old people's mental health condition. In this paper, a systematic review was conducted of the three aspects of physical and mental debilitation and social debilitation in the elderly population. Experimental results showed that after 10 weeks of treatment, 34.7% of the elderly were in the pre‐debilitation state and 22% were in a robust state in the visual music therapy rehabilitation system group. This observation period represents a defined intervention stage used to examine the short‐ to medium‐term emotional response of elderly participants during continuous visual music therapy interaction. In this paper, the effects of performing music therapy on the debilitated elderly were observed, which contributes to the development of intelligent medical information systems for emotion‐aware rehabilitation in elderly populations. As older adults get older, their bodies deteriorate. A large proportion of the elderly population experiences decreased attention and memory failure. Through the intervention of music, the memory of the elderly can be improved to some extent, which is of great help to their physical and mental health. In this paper, a visual music therapy rehabilitation system was designed, and the cloud conqueror was mainly responsible for the preprocessing of data, the identification and modeling of negative emotions, and the storage of data. When the system detected a change in old people's emotions, the subsystem judged the current model of people's expressions and transmitted the results to the server subsystem, which normalized the data and afterward sent it to the visualization subsystem. The visualization subsystem loaded the corresponding music file based on the server's data and generated a dynamic video to relieve the mental health condition of the elderly. In this paper, a systematic review was conducted of the three aspects of physical and mental debilitation and social debilitation in the elderly population. Experimental results showed that after 10 weeks of treatment, 34.7% of the elderly were in the pre‐debilitation state and 22% were in a robust state in the visual music therapy rehabilitation system group. In this paper, the effects of performing music therapy on the debilitated elderly were observed, which were beneficial to the comprehensive development of wise information technology of med.

This paper investigated the influences of shrinkage reducing agent and expansive admixture on autogenous and drying shrinkage of ultrahigh performance concrete (UHPC) containing antifoaming admixture. The shrinkage reducing agent was used at dosage of 0.5%, 1%, and 2% and the expansive admixture was used at dosage of 2% to 4% by mass of cementitious material. The results show that the air content of UHPC increases with the higher addition of shrinkage reducing agent and expansive admixtures. However, the fluidity, compressive strength, and shrinkage of UHPC exhibit a declining tendency. The usage of expansive agent at dosage of 4% significantly reduces the shrinkage of UHPC. The 7-day autogenous shrinkage was decreased by 16.0% and 28-day drying shrinkage was decreased by 29.5%, respectively. Shrinkage reducing agent at dosage of 2% reduced the 7-day autogenous shrinkage by 44.3% and 28-day drying shrinkage by 50.2%. Compared with expansive admixture, shrinkage reducing agent exhibits more efficient shrinkage reduction effect on UHPC.

Climate warming is accelerating the degradation of permafrost, particularly in mid- to low-latitude regions, resulting in the widespread formation of thermokarst landscapes, including retrogressive thaw slumps (RTSs). These landforms, which are predominantly formed by the thawing of ice-rich permafrost, have been shown to impact topography, hydrology, and ecosystem dynamics. However, spatiotemporal changes in RTS distribution and development in mid- to low-latitude permafrost regions are not well understood. This study investigates RTS spatiotemporal dynamics in the Heshenling area of the western Qilian Mountains using multi-temporal PlanetScope and Google Earth imagery, along with Sentinel-1 InSAR data acquired from 2014 to 2023. The results reveal 20 RTSs, averaging 3.7 ha in area, primarily distributed on slopes of 7–23° and at elevations of 3455–3651 m a.s.l. The deformation rates of RTSs ranged from −54 to 27 mm/year. Three developmental stages—active, stable, and mature—were identified through analysis of surface deformation and geometric variations. Active RTSs exhibited accelerated headscarp retreat and debris tongue expansion, with some slumps expanding by up to 35%. This study highlights high temperatures and rainfall as potential factors contributing to the accelerated development of RTS in arid alpine environments, and suggests that RTS activity is likely to accelerate with continued climate change.

We demonstrate a bidirectional fiber laser with an artificial saturable absorber of a step-index multimode fiber sandwiched by single-mode fibers. Two asynchronous noise-like pulse sequences with a repetition frequency difference of 3.16 kHz are obtained. The average power of the bidirectional asynchronous noise-like pulses is greater than 36 mW, and the pulse energy is greater than 3 nJ. The laser we demonstrate has potential applications in micromachining, supercontinuum spectrum generation, and signal processing.

The degradation of concrete caused by sulfate attack poses a significant challenge to its durability. Using nanomaterials to enhance the mechanical and durability properties of concrete is a promising solution. A study of the durability of nano-alumina (NA)-modified concrete by sulfate erosion was carried out. The results showed that the compressive strength, quality, and permeability of concrete to chloride ions decreased during its long-term erosion by a sodium sulfate solution. The NA-modified concrete exhibited higher resistance to erosion by the sodium sulfate than ordinary concrete (OPC), the rate of reduction in its tensile strength was low, and the resistance of sample NA1 to penetration by chloride ions decreased only by one-fifth compared with that of OPC. The results of mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM) tests showed that erosion had severely damaged the pore characteristics and micromorphology of concrete. The total porosities of the OPC and NA1 samples increased from 12.68% and 10.29% to 16.03% and 12.71%, respectively. Their microscopic morphology revealed loose particles and poor compactness. The leading causes of damage to concrete due to erosion by the sodium sulfate were its crystallization pressure and the swelling-induced stress caused by the deposition of crystals in its pores. This study demonstrates that NA can significantly enhance the durability of concrete against sulfate attack, offering valuable insights for strategic applications of NA in concrete materials.

The hydrothermal properties of black soils in seasonal frozen regions are more complex during the freezing process. In the context of the freezing and thawing cycles of black soil within seasonal freeze–thaw regions, there is a limited application of mathematical models to characterize the interplay between water and thermal dynamics. Therefore, existing models for analyzing water and heat in black soil in seasonal frozen regions may not be applicable or accurate. The application of existing models to the water and heat problems of black soil in seasonal frozen regions is important and innovative. This study is grounded in Darcy’s law pertaining to unsaturated soil water flow and is informed by principles of mass conservation, energy conservation, and conduction theory. The research begins with the establishment of definitions for relative saturation and the solid–liquid ratio through mathematical transformations. Subsequently, a theoretical model is developed to represent the water–heat coupling in black soil, utilizing relative saturation and temperature as field functions. The model’s validity is confirmed through its integration with experimental data from a black soil freezing and thawing model test. Furthermore, the analysis delves into the distribution of the temperature field, water field, and ice content that arise from the phase change processes occurring during the freezing and thawing of black soil roadbed slopes. There is a theoretical basis for the prevention and control of disasters associated with black soil roadbed slopes in seasonal frozen areas.

In order to investigate the characteristics of sensorimotor cortex during motor execution （ME）, voluntary, stimulated and imaginary finger flexions were performed by ten volunteer subjects. Electroencephalogram （EEG） data were recorded according to the modified 10-20 International EEG System. The patterns were compared by the analysis of the motion-evoked EEG signals focusing on the contralateral （C3） and ipsilateral （C4） channels for hemispheric differences. The EEG energy distributions at alpha （8-13 Hz）, beta （14-30 Hz） and gamma （30-50 Hz） bands were computed by wavelet transform （WT） and compared by the analysis of variance （ANOVA）. The timefrequency （TF） analysis indicated that there existed a contralateral dominance of alpha post-movement event-related synchronization （ERS） pattern during the voluntary task, and that the energy of alpha band increased in the ipsilateral area during the stimulated （median nerve of wrist） task. Besides, the contralateral alpha and beta event-related desyn- chronization （ERD） patterns were observed in both stimulated and imaginary tasks. Another significant difference was found in the mean power values of gamma band （p〈0.01） between the imaginary and other tasks. The results show that significant hemispheric differences such as alpha and beta band EEG energy distributions and TF changing phenomena （ERS/ERD） were found between C3 and C4 areas during all of the three patterns. The largest energy dis- tribution was always at the alpha band for each task.