Subjects: Other Disciplines >> Synthetic discipline submitted time 2024-06-13 Cooperative journals: 《高校图书馆工作》
Abstract： The empowerment of libraries in shaping new public cultural spaces constitutes a core element of building a new public cultural infrastructure system and spatial service scenarios. This article employs deductive and inductive methods, along with case analyses, to explore a research framework for the role of libraries in the development of new public cultural spaces. The framework is analyzed across three dimensions: theoretical empowerment, practical empowerment, and standard empowerment. Additionally, the article proposes implementation pathways for the future development of new public cultural spaces in China. Theoretical empowerment involves guiding the construction model of main and branch libraries with third space theory, directing the socialized operation model with spatial production theory, and guiding the urban-rural cultural integration model with spatial justice theory. Practical modalities are shifting towards the extension of public cultural cloud space scenarios driven by digital transformation, the intelligent expansion of public library space transformation and operations, and the transition of urban cultural spatial services facilitated by the construction of the “City of Libraries”. Standard empowerment encompasses relevant standards and norms in library architecture, library services, and library assessments. Looking forward, libraries need to enhance development pathways by improving related standards, strengthening technological developments, aligning with practical industry needs, and constructing a comprehensive supply system. This will ultimately contribute to the establishment of a modern, independent public cultural service system with Chinese characteristics.
Subjects: Geosciences >> Space Physics submitted time 2016-04-22
Abstract： The capability of the modern payloads on satellite is getting stronger and stronger， and the motor has been used widely. The life and reliability of the motor equipped on satellite would be the main characters that restrict long-time work of the satellites. So the design of motor system on satellites should be not only satisfied with the application requirements， but also the requirements of life and reliability should be fully taken into account simultaneously. In this paper， a two-phase hybrid stepper motor control system based on FPGA is introduced. In order to improve control accuracy and suppress low-frequency vibration， the system was designed based on subdivision control method and an acceleration process was designed to ensure that motor started properly. Large current was used to stop the motor quickly and small current was used to keep the motor motionless. The test results showed that this system has the advantages of low-power consumption， starting and stopping steadily.
Peer Review Status:
Awaiting Review
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