Search

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering for Thermal Energy & Power / Reneng Dongli Gongcheng is the property of Journal of Engineering for Thermal Energy & Power and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In mobile edge computing research, the edge server can effectively save computing resources by caching task data. But how to allocate cache resources to solve the competitive relationship between edge servers, as well as energy consumption and efficiency issues, and achieve optimal system performance is an NP difficult problem. Therefore, this paper proposes an online potential game resource allocation strategy OPSCO (online potential game strategy based on cache optimization) based on cache optimization, using a new cache replacement strategy CASCU (cache allocation strategy based on cache utility) to maximize the utility of the cache. By optimizing the efficiency indicator function of edge servers, combining factors such as cache replacement cost with Lyapunov optimization, potential game, and EWA (exponential weighting algorithm) algorithm, the competitive relationship of edge servers is modeled, and potential game related proofs and analyses are conducted. The simulation results show that compared with other resource allocation strategies, OPSCO can significantly improve the task completion rate and cache utility, reduce equipment energy consumption and time overhead, and solve the resource allocation and data cache problems in mobile edge computing online cache scenarios. [ABSTRACT FROM AUTHOR]

The Maritime Silk Road (MSR) plays a significant role in international trade and the global economy, contributing to achieving the United Nations Sustainable Development Goals (SDGs). However, most countries along the MSR are developing nations and emerging economies with high natural resource consumption and fragile environments and face conflicts between economic development and environmental protection. In this context, understanding the status of natural resource utilization in MSR countries is important to advance sustainable development in these countries and promote the construction of the Green Belt and Road, and global environmental governance. Focusing on SDGs 6 (water), 14 (life below water), and 15 (life on land), this study constructed an indicator framework for assessing the sustainable use of natural resources with 24 targets and 42 indicators. Strong and weak sustainability concepts were introduced, and the constant elasticity of substitution function and combined compromise solution method were used to assess the sustainability of natural resource use for 46 countries along the MSR in 2020. The results showed that: (1) the scores in the weak sustainability scenario were higher than those in the strong scenario. The differences in the target scores between the two sustainability scenarios revealed unevenness among the indicator scores. Strong sustainability prefers balanced performance across indicators over weak sustainability. (2) MSR countries performed poorly on targets 6.3 (Improve water quality), 6.4 (Water use), 6.5 (Integrated water resources management), 14.1 (Reduce marine pollution), 14.4 (Conserve fish stocks), 14.5 (Protect marine protected areas), 14. a (Develop marine science and technology), 15.1 (Ecosystem systems and services) and 15.6 (Access and share genetic resources); therefore, these countries should increase their efforts in these areas and improve relevant policies and measures. (3) From the perspective of SDG scores, Portugal, Croatia, and Italy topped each SDG, while Sudan, Somalia, and Djibouti lagged. Several countries, such as Singapore, Iran, and Myanmar, show uneven performance. Governments should develop more effective resource development and conservation plans based on their strengths and weaknesses. (4) Regarding final rankings, Portugal, Croatia, and Greece had the best overall performance, whereas Liberia, Somalia, and Djibouti ranked last. Regionally, Europe ranked highest, followed by South America, Asia, and Africa, which are related to their economic development and resource endowment levels. (5) In the future, China and the MSR countries should focus on promoting international cooperation in areas such as water security, blue carbon development, and biodiversity conservation. Furthermore, China should develop targeted investment and cooperation strategies based on the differences in resource use, environmental conditions, and development levels among countries. This study provides a reference for deepening cooperation between China and the MSR countries regarding ecological and environmental protection. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Art Panorama is the property of Art Panorama Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Southeast University / Dongnan Daxue Xuebao is the property of Journal of Southeast University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Mo is considered as one of the potential dopants for improving the properties of ZnO materials. Each Mo atom can contribute four free electrons to ZnO crystal for the large valence difference between Mof+ and Zn2+ ions (+ 4). In this paper, MZO transparent conductive films with different sputtering power are prepared by RF magnetron sputtering. The effects of sputtering power on the surface morphology, microstructure, microstructure and photoelectric properties of MZO films are studied. The results show that the MZO films prepared by different powers all grow preferentially along the (002) direction. In MZO lattice, Mo atoms exist as Mo. And the band gap of MZO film is 3.41. In addition, RF power has great influence on the surface morphology, crystal structure, electrical and optical properties of MZO thin films. The MZO thin films under 150 W sputtering power have the best photoelectric comprehensive properties, which have a particle size of 70.93 nm, an average transmittance of 81.85% in the visible range and a resistivity of 9.2X10 (1 • cm. Meanwhile, the refractive index and extinction coefficient of MZO thin films are measured by ellipsometer. The complex dielectric function, dissipation factor and energy loss function of MZO films at different power are calculated. Finally, the dispersion characteristics of MZO thin films are analyzed according to the effective single oscillator theory. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objectives: The Chinese Mars probe has been successfully launched and is currently orbiting Mars. This article analyzes several different satellite orbit characteristics in detail to find out the suitable orbits with stable operation characteristics. Methods: This paper uses the MAGREAS （Mars gravity recovery and analysis software/system） independently developed by Wuhan University to analyze the evolution of satellite orbits under different initial orbit heights, different initial orbital inclinations, different initial orbital eccentricities, and different orders of Martian gravitational field models. Then we make orbit predictions for the four situations.Results: The results show that satellite can run for nearly two years without any orbital adjustment. When the initial orbital inclination is 90°, it does not contribute to the running time of the satellite. In the calculation of orbital integration, the Martian gravity field model can be intercepted to 100 degrees without affecting the calculation accuracy.Conclusions: This paper has done a lot of orbit predictions based on different initial orbit elements, and analyzed the evolution characteristics of different satellite orbits. This research can provide a certain reference for China's Mars exploration project. [ABSTRACT FROM AUTHOR]

To optimize the design of girder bridge, the proper cell number of the two-lane CSWs PC box girder was investigated. Based on the two-lane CSWs PC box girder bridge design parameter, the mechanical behaviors of single-room girder box with single cell to five cells were analyzed under four different load conditions by finite element analysis (FEA).The mid-span displacement in the bottom flange, the von-Mises shear stress in both corrugated web sides, the normal warping stress and the natural frequency of the box girders were obtained. The results show that multiplying cell numbers can increase the prestressing efficiency and decrease the von-Mises shear stress in both corrugated web sides in some cases. However, with the cell number increasing, the normal warping stress under eccentric load and the dead weight of the girder are increased dramatically. By simple formula method and principal component analysis method, the proper cell number for the two-lane CSWs PC box girder is suggested. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)