As the main force of construction enterprises,construction enterprises shoulder the important task of national pillar industries.However,at present,construction enterprises are still labor-intensive enterprises,with l...As the main force of construction enterprises,construction enterprises shoulder the important task of national pillar industries.However,at present,construction enterprises are still labor-intensive enterprises,with low profitability,low overall scientific and technological level,insufficient innovation ability and weak application and protection of intellectual property rights.Based on the current situation of construction enterprises,combined with the author's enterprise,this paper considers the problems existing in the intellectual property management of construction enterprises,and puts forward some countermeasures for the intellectual property management.展开更多
Last year, the State Council issued the Several Opinions on Further Strengthening the Management of Urban Planning. The guideline on urban planning has sparked heated debate among Internet users over opening up gated ...Last year, the State Council issued the Several Opinions on Further Strengthening the Management of Urban Planning. The guideline on urban planning has sparked heated debate among Internet users over opening up gated residential communities to public road system. This paper, based on the analysis of the background and contents of block system reform, explored the problems of the implementation of the block system reform and the impact of the block system reform on the real estate in China from 3 aspects, the selling points of the high-end communities, future property management and the community elderly care model.展开更多
Flexible materials are essential in bionic fields such as soft robots.However,the lack of stiffness limits the mechanical performance of soft robots and makes them difficult to develop in many extreme working conditio...Flexible materials are essential in bionic fields such as soft robots.However,the lack of stiffness limits the mechanical performance of soft robots and makes them difficult to develop in many extreme working conditions,such as lifting and excavation operations.To address this issue,we prepared a stiffness-tunable composite by dispersing low-melting-point alloy into thermosetting epoxy resin.A dramatic and rapid change in stiffness was achieved by changing the state of matter at lower temperatures,and accurate control of the composite modulus was achieved by controlling the temperature.When the alloy content is at 30vol%,the tensile modulus changes 41.6 times,while the compressive modulus changes 58.9 times.By applying the composite to a flexible actuator,the initial stiffness of the actuator was improved by 124 times,reaching 332 mN/mm.In addition,the use of stiffness-tunable materials in the wheel allowed for timely changes in the grounding area to improve friction.These flexible materials with manageable mechanical properties have wide applicability in fields including bionics,robotics,and sensing.Our findings provide a new approach to designing and developing flexible materials with improved stiffness and controllability.展开更多
文摘As the main force of construction enterprises,construction enterprises shoulder the important task of national pillar industries.However,at present,construction enterprises are still labor-intensive enterprises,with low profitability,low overall scientific and technological level,insufficient innovation ability and weak application and protection of intellectual property rights.Based on the current situation of construction enterprises,combined with the author's enterprise,this paper considers the problems existing in the intellectual property management of construction enterprises,and puts forward some countermeasures for the intellectual property management.
文摘Last year, the State Council issued the Several Opinions on Further Strengthening the Management of Urban Planning. The guideline on urban planning has sparked heated debate among Internet users over opening up gated residential communities to public road system. This paper, based on the analysis of the background and contents of block system reform, explored the problems of the implementation of the block system reform and the impact of the block system reform on the real estate in China from 3 aspects, the selling points of the high-end communities, future property management and the community elderly care model.
基金This work was supported by the Project of National Key Research and Development Program of China(2018YFA0703300)the National Natural Science Foundation of China(52105299,52175271,52021003,91948302)+1 种基金Science and technology development plan project of Jilin Province(20210509047RQ,20210508057RQ)Program for JLU Science and Technology Innovative Research Team(2017TD-04).
文摘Flexible materials are essential in bionic fields such as soft robots.However,the lack of stiffness limits the mechanical performance of soft robots and makes them difficult to develop in many extreme working conditions,such as lifting and excavation operations.To address this issue,we prepared a stiffness-tunable composite by dispersing low-melting-point alloy into thermosetting epoxy resin.A dramatic and rapid change in stiffness was achieved by changing the state of matter at lower temperatures,and accurate control of the composite modulus was achieved by controlling the temperature.When the alloy content is at 30vol%,the tensile modulus changes 41.6 times,while the compressive modulus changes 58.9 times.By applying the composite to a flexible actuator,the initial stiffness of the actuator was improved by 124 times,reaching 332 mN/mm.In addition,the use of stiffness-tunable materials in the wheel allowed for timely changes in the grounding area to improve friction.These flexible materials with manageable mechanical properties have wide applicability in fields including bionics,robotics,and sensing.Our findings provide a new approach to designing and developing flexible materials with improved stiffness and controllability.
