With the advent of the scientific and technological era, the times and the modernization of China, the requirements and goals of the Political perspective applied to undergraduate universities in the ...Age of Science and Technology are constantly updated, and it is of practical significance to learn from a political perspective college students in the new era of rapid development today. This paper constructs the 4C/ID learning model by finding literature and methods involved and applied in the learning process to realize political learning of college students based on Internet technology and provide some theoretical reference basis for teachers and students of relevant colleges and universities. Taking the study of new ways of political learning of college students as the theoretical basis, through the support of Internet technology, the traditional research ideas discussing the political learning of college students are analyzed, discussions are held around the new ways political level learning, and finally, the 4C/ID learning model of Political learning of college students based on Internet science is constructed. How to improve the political level learning model and open up new related learning pathways is a necessary issue that educators cannot ignore today. The study shows that the 4C/ID learning model of introducing the Internet into the study of college students at the political level technology can develop political level learning to the greatest extent. Based on Internet technology, the curriculum content system political level learning can be deeply explored to promote Xi Jinping’s idea in the new social and technological era of the healthy and vigorous development of socialist culture construction.
Along with the application and popularization of information fusion technology in all fields of life, education informatization is also increasing. In this paper, a scale prediction model is ...introduced based on the Multi-scale Attention Module MAM, composed of CSP-MAM, to detect the position of students in the classroom. Students’ expression changes in the school are identified through face classification, border regression, and face key point localization techniques. Using the data analysis function of the back-end of the information classroom, we obtain students’ classroom interaction information, and with the help of information fusion technology, we fuse the Information of the three classroom dimensions to construct the ideological and political learning evaluation model. In evaluating individual students’ concentration, the frequency of neutral and positive expressions of the five students is 49,960 times higher than that of negative expressions. After the ideological and political informatization teaching, the student’s overall learning effect score is 9.0174, and the three dimensions have been improved by 1.245, 0.9492, and 0.9024, respectively, which shows that the student’s learning concentration and effect under ideological and political informatization education are good.
Research on magnesium alloys continues to attract great attention, with more than 3000 papers on magnesium and magnesium alloys published and indexed in SCI in 2020 alone. The results of bibliometric ...analyses show that microstructure control and mechanical properties of Mg alloys are continuously the main research focus, and the corrosion and protection of Mg alloys are still widely concerned. The emerging research hot spots are mainly on functional magnesium materials, such as Mg ion batteries, hydrogen storage Mg materials, and bio-magnesium alloys. Great contributions to the research and development of magnesium alloys in 2020 have been made by Chongqing University, Chinese Academy of Sciences, Central South University, Shanghai Jiaotong University, Northeastern University, Helmholtz Zentrum Geesthacht, etc. The directions for future research are suggested, including: 1) the synergistic control of microstructures to achieve high-performance magnesium alloys with concurrent high strength and superior plasticity along with high corrosion resistance and low cost; 2) further development of functional magnesium materials such as Mg batteries, hydrogen storage Mg materials, structural-functional materials and bio-magnesium materials; 3) studies on the effective corrosion protection and control of degradation rate of magnesium alloys; 4) further improvement of advanced processing technology on Mg alloys.
► The retailer faces customer returns in a manufacturer Stackelberg supply chain. ► Without considering customer returns, the manufacturer incurs a profit loss. ► Retailer is better informed than ...manufacturer on customer returns information. ► Retailer has different preferences in sharing this information with/without buyback. ► Incentives and issues to share this information are also discussed.
In this paper, we examine a single period problem in a supply chain in which a Stackelberg manufacturer supplies a product to a retailer who faces customer returns and demand uncertainty. We show that the manufacturer incurs a significant profit loss with and without a buyback policy if it fails to account for customer returns in the wholesale price decision. Under the assumption that the retailer is better informed than the manufacturer on customer returns information, we show that without a buyback policy, the retailer prefers not to share if the manufacturer overestimates while it prefers to share customer returns information if the manufacturer underestimates this information. If the manufacturer offers a buyback policy, we have the opposite results. We also discuss incentives to share the customer returns information and some of the issues that are raised in sharing this information.
Neutrino oscillation is deemed as an interesting physical phenomenon and shows the nonclassical features made apparently by the Leggett–Garg inequality. The uncertainty principle is one of the ...fundamental features that distinguishes the quantum world to its classical counterpart. And the principle can be depicted in terms of entropy, which forms the so-called entropic uncertainty relations (EUR). In this work, the entropic uncertainty relations that are relevant to the neutrino-flavor states are investigated by comparing the experimental observation of neutrino oscillations to predictions. From two different neutrino sources, we analyze ensembles of reactor and accelerator neutrinos for different energies, including measurements performed by the Daya Bay collaboration using detectors at 0.5 and 1.6 km from their source, and by the MINOS collaboration using a detector with a 735km distance to the neutrino source. It is found that the entropy-based uncertainty conditions strengths exhibits non-monotonic evolutions as the energy increases. We also quantify the systemic quantumness measured by quantum correlation, and derive the intrinsic relationship between quantum correlation and EUR. Furthermore, we utilize EUR as a criterion to detect entanglement of neutrino-flavor state. Our results could illustrate the potential applications of neutrino oscillations on quantum information processing in the weak-interaction processes.
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•CeO2 nanopolyhedra, nanorods, and nanocubes have been selectively synthesized by a hydrothermal process.•Different dominant exposed facets: {111} and {100} for nanopolyhedra, {110} ...and {100} for nanorods, and {100} for nanocubes.•Facet-dependent response reported for the first time to dimethylamine in the order: nanocubes > nanorods > nanopolyhydra.•Response order of CeO2 nanocrystals can be ascribed to the different content of surface defects and {100} polar facets.
Recently, the influence of polar facets on the gas sensing performance of metal oxides has drawn much attention, yet the facet-dependent gas sensing properties of rare earth oxides have not been reported so far. In this work, taking CeO2 as an example, uniform single-crystalline nanopolyhedra, nanorods and nanocubes of cubic CeO2 were selectively prepared by a hydrothermal method at different temperatures and NaOH concentrations, using Ce(NO3)3 as the cerium source. According to X-ray powder diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) analysis, these CeO2 nanocrystals possess different exposed crystal planes: {111} and {100} for nanopolyhedra, {110} and {100} for nanorods, and {100} for nanocubes. Abundant defects were confirmed on the surface of three CeO2 nanocrystals by X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and photoluminescence (PL). Notably, gas sensors based on these three CeO2 nanocrystals exhibited distinct response values towards dimethylamine vapor in the following order: nanocubes > nanorods > nanopolyhedra, while excluding the effects of characteristic dimension and specific surface area. The response order of CeO2 nanocrystals is primarily ascribed to the different content of surface defects and {100} polar facets instead of {111} and {110} nonpolar facets.
Combined with the YOLOv3 algorithm, the Darknet network developed on the Internet of Things offers boat maintenance, design, and deployment to meet the needs of developing and implementing the ...Internet of Things-based ship management. System maintenance was completed, solving the problem of care and identifying the vessels in the water important for care. Based on this, the YOLOv3 algorithm has been reported to achieve the target thinking based on the global data map, and the target area thinking and the distribution plan need to be set into a standard neural network. Add a penalty for fixing the boat to different parts of the system together. Binarily divide the needs by a set of logistic regression, allowing rapid tracking and identification of goals in high-risk situations. Experimental results show that the average validation rate of this study’ standard is 89.5% at 30 frames per second. Compared with traditional and in-depth training, this data algorithm is not only more practical and accurate but also more efficient in learning algorithms and various environments. The switches are more flexible and can control multiple ships and their essentials.
Polarization‐sensitive photodetectors are gaining numerous attention since polarization detection is important in geological remote sensing, atmospheric monitoring, military recon, and medical ...examination. Among various reported photoactive materials for photodetectors, metal halide perovskites have outstanding advantages such as tunable band gaps, excellent optoelectronic properties, and easy fabrication. Moreover, the characteristics of crystal structure anisotropy and controllable growth orientation of perovskite crystals endow the perovskite photodetector with the ability to identify light polarization states. This review outlines the recent research progress of perovskite photodetectors on polarization‐sensitive detection. Firstly, key device parameters of polarization‐sensitive detection are introduced. Then, the recent progress of polarization‐sensitive perovskite detectors in the field of linear and circular polarization is reviewed according to the different principles of polarization response. Finally, the challenges of polarization‐sensitive perovskite photodetector are discussed.
Polarization‐sensitive photodetectors are important in geological remote sensing, atmospheric monitoring, military recon, and medical examination. The review addresses the recent research progress of perovskite photodetectors on polarization‐sensitive detection in terms of key device parameters, linear and circular polarization via different principles of polarization response.
the Development of Design Has Been Accompanied by the Progress of Human Civilization and Culture. the Progress of Contemporary Society is Gradually Changing All Aspects of Human Production and Life. ...Living Ceramics is One of the Types of Ceramic Products, with Certain Practicality and Appreciation. It is a Relatively Traditional and Ancient Ceramic Product in Our Country. Life Ceramic Design Serves People, and Humanization Must Become the Core of All Designs. in the Contemporary Era, the Research on the Concept of Humanized Design Has Gone Deep into Many Fields and is Quite Mature. in Ceramic Modeling Design, the Attention of Humanized Design is Particularly Important. Virtual Reality (Vr) Technology Can Be Used as a Tool to Test the Performance of Ceramic Products, Which Can Be Evaluated and Corrected in All Aspects Before They Are Put into Production, So That Designers and Customers Can Feel and Identify the Advantages and Disadvantages of the Products through the Virtual Model on the Computer. in This Paper, Virtual Reality Technology is Applied in the Research of Life Ceramic Design, and the Application of Humanized Design in Life Ceramic Product Design is Analyzed.
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