Business Process Decomposition based on Service Relevance Mining

Abstrac

Ultra-Strong Long-Chain Polyamide Elastomers With Programmable Supramolecular Interactions and Oriented Crystalline Microstructures

Polyamides are one of the most important polymers. Long-chain aliphatic polyamides could bridge the gap between traditional polyamides and polyethylenes. Here we report an approach to preparing sustainable ultra-strong elastomers from biomass-derived long-chain polyamides by thiol-ene addition copolymerization with diamide diene monomers. The pendant polar hydroxyl and non-polar butyrate groups between amides allow controlled programming of supramolecular hydrogen bonding and facile tuning of crystallization of polymer chains. The presence of thioether groups on the main chain can further induce metal–ligand coordination (cuprous-thioether). Unidirectional step-cycle tensile deformation has been applied to these polyamides and significantly enhances tensile strength to over 210 MPa while maintaining elasticity. Uniaxial deformation leads to a rearrangement and alignment of crystalline microstructures, which is responsible for the mechanical enhancement. These chromophore-free polyamides are observed with strong luminescence ascribed to the effect of aggregation-induced emission (AIE), originating from the formation of amide clusters with restricted molecular motions

Field Study on Indoor Thermal Environments of Monastic Houses and Thermal Comfort of Monks

Monastic houses are an essential part of the Tibetan monastic system in China. In this study, the monastic houses of Labrang in the Tibetan region of Gannan were used as the research objects. Physical parameters such as indoor temperature, humidity, and radiation temperature of the monastic houses were measured. The measured results were compared with the standard values, while the air temperature was linearly fitted using TSV, PMV, and aPMV. The results show that the temperature inside and outside the monastic houses fluctuates considerably; the theoretical thermal neutral temperature of the tested monks in winter is 22.46 °C, which is higher than the measured thermal neutral temperature in winter of 16.43 °C. When analyzing the results, it was found that the local climate, dress code, and the monks’ specific habits all impact the perception of thermal comfort, which creates a discrepancy between the accurate results and the standard values. The above findings provide a more comprehensive reference for the thermal comfort requirements of the monks in cold areas, which can be used as a guide for the improvement and evaluation of the monastic houses in cold areas

Condition Assessment of Paper Insulation in Oil-Immersed Power Transformers Based on the Iterative Inversion of Resistivity

The resistivity of oil impregnated paper will decrease during its aging process. This paper takes paper resistivity as an assessment index to evaluate the insulation condition of oil impregnated paper in power transformer. The feasibility of this method are discussed in two aspects: reliability and sensitivity. Iterative inversion of paper resistivity was combined with finite element simulation. Both the bisection method and Newton’s method were used as iterative methods. After the analysis and comparison, Newton’s method was selected as the first option of paper resistivity iteration for its faster convergence. In order to consider the spatial distribution characteristic of paper aging and enhance the calculation accuracy, the resistivity calculation is expanded to a multivariate iteration based on Newton’s method, in order to consider the spatial distribution characteristic of paper aging and improve the calculation accuracy. This paper presents an exploratory research on condition assessment of oil impregnated paper insulation, and provides some reference to the security and economy operation of power transformers

Integrative analysis of health restoration in urban blue-green spaces: a multiscale approach to community park

The integration of blue-green space in urban environments has been recognized for its ability to address environmental challenges and enhance human well-being. Despite this consensus, the methodological approaches to comprehensively evaluate and strategically design these spaces require further exploration. This study employs the Park Community Concept and a dual approach of macro and micro-level methods to advance field research. A detailed review of the existing literature helped clarify the foundational theories and concepts related to blue-green space. In the context of Dujiangyan's urban area, spatial sampling and PPGIS surveys were applied to explore the structural composition and characteristics of the blue-green space at different scales. We then utilized regression and path analysis to discern the factors influencing satisfaction with blue-green spatial attributes, environmental preferences, and health restoration effects. The findings revealed: (1) Dujiangyan's main urban area exhibits a Park Community structure at a macro level, but suffers from specific spatial inadequacies like restricted linear blue-green space, underutilized river-adjacent areas, and limited space functionality; (2) at a micro level, similar satisfaction levels with blue-green spatial attributes were observed in the Yijie District and Nanqiao Square, ranging from moderate to high; (3) the quantitative analysis identified significant positive correlations between elements such as plant configuration, road walking comfort, site area, and site safety with restorative evaluations, with indirect impacts on restoration through site safety and accessibility. The innovative approach presented in this study offers a valuable reference for assessing and developing blue-green spaces in similar urban contexts. This has crucial implications for future urban planning and design.</p

An epidermal sEMG tattoo-like patch as a new human-machine interface for patients with loss of voice

10.1038/s41378-019-0127-5MICROSYSTEMS & NANOENGINEERING6

The Effects of Urban Neighborhood Environmental Evaluation and Health Service Facilities on Residents&rsquo; Self-Rated Physical and Mental Health: A Comparative and Empirical Survey

(1) Background: The neighborhood environment has been shown to be an essential factor affecting residents&rsquo; quality of life and health, but the relationship between the characteristics of health service facilities and health levels is rarely known. (2) Methods: This study used a representative sample (n = 591, 303 women; 288 men, age 18&ndash;85 years, lived in Chengdu for an extensive time) of residents living in Chengdu City, China, and took spatial point data and empirical research data to construct an ordered logistic regression model. We contrastively analyzed the influence of different variables in the neighborhood environment and health service facilities on self-rated physical health (SRPH) and self-rated mental health (SRMH). (3) Results: The frequency of use and accessibility of multiple facilities in the health service facilities were significantly associated with self-rated health (SRH). Significant differences occurred between residents&rsquo; perceived accessibility and actual accessibility of facilities in SRH. Comparing the results of SRPH and SRMH revealed that the influencing factors that affect the two vary. The factors that significantly affect SRMH include neighborhood physical environment evaluation; social environmental evaluation; the frequency of use of the parks and squares, and sports zones; and the accessibility of parks and squares, specialized hospitals, community hospitals, and pharmacies. However, the factors that significantly affect SRPH include the frequency of use of sports venues, general hospitals, and pharmacies and the accessibility of general hospitals. The social environment of the neighborhood is also a non-negligible part, and its interaction with the physical environment of the neighborhood affects the outcome of SRH. (4) Conclusions: Neighborhood environmental characteristics and the layout of health service facilities have significant differential effects on people&rsquo;s physical and psychological health, and this information is of great value in promoting healthy city development and improving the quality of life of urban populations around the world