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Research on seismic response of museum cultural relics for shock absorption and seismic isolation

Abstract Museum cultural relics are valuable heritages of the development and change of the Chinese Nation over thousands of years, so the research on the protection of cultural relics is of great significance. In this paper, for the research on double shockproof of museums and cultural relics showcases in the museum, finite element models of the base fixed structure, base isolated structure and viscous fluid damper structure of the museum are established, model analysis and time-history analysis are carried out to compare the seismic effect of the three kinds of structures. At the same time, the fixed cultural relics showcase, isolated cultural relics showcase and viscous fluid damper cultural relics showcase are established, and the seismic response analysis is carried out by inputting seismic waves and floor waves of the museums to study the acceleration and displacement response of the showcase countertop. The results show that, compared with the base fixed structure and base isolated structure of the museum, the viscous fluid damper structure of the museum can better reduce the inter-story shear force, inter-story drift and the floor acceleration response of the structure, and more effectively consume the seismic energy input to the structure, with the most obvious effect of shock absorption and seismic isolation; relative to the base fixed structure and base isolated structure, under the action of floor waves of the viscous fluid damper structure of the museum, the isolated cultural relics showcase and viscous fluid damper cultural relics showcase for shock absorption and seismic isolation are very obvious, so the isolated cultural relics showcase and viscous fluid damper cultural relics showcase are placed in the viscous fluid damper structure of the museum, all can achieve the purpose of the double shockproof of the cultural relics.

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Seismic response of a cliff-attached structure based on soil-structure interaction effect

Abstract Cliff-attached constructions denote structures that align with and directly attach to the vertical interface of a mountain cliff. Cliff-attached constructions, compared to conventional building structures, become particularly complex when considering the interaction between soil and structure due to the unequal height of the grounded foundation, which requires deeper studies. This study investigates the influence of variable parameters in soil-structure interaction (SSI) on the seismic performance of such structures, based on which three different models of cliff-attached structures were established for analysis,naming,the cliff-attached structure without SSI effects,the model with traditional SSI effects,and the model with variable-parameter SSI effects. Seismic inputs are assessed in both transverse and down slope directions. The results indicate that the seismic response of cliff-attached structures increases as shear wave velocity decreases while considering SSI effects. SSI effects are most pronounced on the upper grounding layers of the structure and its upper layers' dynamic response. Seismic responses in the down slope direction are markedly lower than those in the transverse direction. In the transverse direction,cliff-attached structures display pronounced torsional effects, resulting in a torsional effect roughly 1.4 times greater at a shear wave velocity of 100 m/s than at 700 m/s. The upper grounding layers of cliff-attached structures experience significant deformation and stress concentration. Considering variable-parameter SSI effects in mountainous regions results in more accurate and reliable seismic responses for cliff-attached structures.

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The Impact of Employees' Perception of Smart Cities on Employee Green Behavior: A Moderated Mediation Model

<abstract> <p>The issuance of the 2022 White Paper on Smart Cities has brought the notion of smart cities to the forefront. This conceptual framework revolves around green and sustainable development, aligning seamlessly with China's mission to strengthen ecological civilization in the contemporary era. In this study, we delve into the implications of employees' perception of smart cities on their ecologically conscious behaviors, drawing upon the frameworks of self-determination theory. The empirical analysis encompasses 306 employee respondents hailing from diverse enterprises and backgrounds. The findings extracted from this investigation reveal several crucial insights: (1) A robust and positive correlation between the employees' perception of smart cities and their eco-friendly behaviors; (2) corporate environmental responsibility assumes a partially mediating role between the employees' perception of smart cities and eco-friendly behaviors; (3) environmental awareness emerges as a constructive moderator in the interplay between corporate environmental responsibility and employees' eco-friendly behaviors; (4) notably, the impact of employees' perception of smart cities on employees' eco-friendly behaviors assumes greater prominence when environmental awareness is high, signifying an intensified indirect relationship. This dynamic underscores that during periods of heightened environmental awareness, the influence of employees' perception of smart cities on eco-friendly behaviors becomes more pronounced, reinforced by a more substantial indirect influence channeled through corporate environmental responsibility. These findings enhance the theoretical underpinnings of self-determination theory. Enterprises are encouraged to underscore and incentivize employees' pro-environmental behaviors, integrate environmental preservation paradigms into corporate culture and enhance green management initiatives, synergistically advancing shared ecological objectives for both enterprises and employees.</p> </abstract>

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