Medical Waste Treatment Station Selection Based on Linguistic q-Rung Orthopair Fuzzy Numbers

During the COVID-19 outbreak,the use of single-use medical supplies increased significantly.It is essential to select suitable sites for establishing medical waste treatment stations.It is a big challenge to solve the medical waste treatment station selection problem due to some conflicting factors.This paper proposes a multi-attribute decision-making(MADM)method based on the partitioned Maclaurin symmetric mean(PMSM)operator.For the medical waste treatment station selection problem,the factors or attributes(these two terms can be interchanged.)in the same clusters are closely related,and the attributes in different clusters have no relationships.The partitioned Maclaurin symmetric mean function(PMSMF)can handle these complex attribute relationships.Hence,we extend the PMSM operator to process the linguistic q-rung orthopair fuzzy numbers(Lq-ROFNs)and propose the linguistic q-rung orthopair fuzzy partitioned Maclaurin symmetric mean(Lq-ROFPMSM)operator and its weighted form(Lq-ROFWPMSM).To reduce the negative impact of unreasonable data on the final output results,we propose the linguistic q-rung orthopair fuzzy partitioned dual Maclaurin symmetric mean(Lq-ROFPDMSM)operator and its weighted form(Lq-ROFWPDMSM).We also discuss the characteristics and typical examples of the above operators.A novel MADM method uses the Lq-ROFWPMSM operator and the Lq-ROFWPDMSM operator to solve the medical waste treatment station selection problem.Finally,the usability and superiority of the proposed method are verified by comparing it with previous methods.

“双减”政策的议程设置机制分析——基于多源流理论视角

2021年7月,中共中央办公厅、国务院办公厅印发《关于进一步减轻义务教育阶段学生作业负担和校外培训负担的意见》,该文件的出台对于解决学生学业负担重的问题具有重要指导意义。本研究基于多源流理论对学生减负问题是如何从众多的教育问题上升到教育政策议程进行分析。研究发现:中小学课业压力重和学科类校外辅导问题等形成了“双减”政策的问题源流;专家学者的政策建议构成了“双减”政策的政策源流;党和政府提高教育质量,落实立德树人根本任务的理念形成了“双减”政策的政治源流。在教培产业自身危机、学生和家长不堪重负、国家决心整治校外辅导等多方面因素的催化下,问题流、政策流、政治流三大源流实现汇合,从而实现了学生减负问题被提上政策议程及“双减”政策的出台。

The PHYB–FOF2–VOZ2 module functions to finetune flowering in response to changes in light quality by modulating FLC expression in Arabidopsis

Proper timing of flowering under different environmental conditions is critical for plant propagation.Light quality is a pivotal environmental cue that plays a critical role in flowering regulation.Plants tend to flower late under light with a high red(R)/far-red(FR)light ratio but early under light with a low R/FR light ratio.However,how plants fine-tune flowering in response to changes in light quality is not well understood.Here,we demonstrate that F-box of Flowering 2(FOF2),an autonomous pathway–related regulator,physically interacts with VASCULAR PLANT ONE-ZINC FINGER 1 and 2(VOZ1 and VOZ2),which are direct downstream factors of the R/FR light receptor phytochrome B(PHYB).We show that PHYB physically interacts with FOF2,mediates stabilization of the FOF2 protein under FR light and end-of-day FR light,and enhances FOF2 binding to VOZ2,which leads to degradation of VOZ2 by SCF^(FOF2) E3 ligase.By contrast,PHYB mediates degradation of FOF2 protein under R light and end-of-day R light.Genetic interaction studies demonstrated that FOF2 functions downstream of PHYB to promote FLC expression and inhibit flowering under both high R/FR light and simulated shade conditions,processes that are partially dependent on VOZ proteins.Taken together,our findings suggest a novel mechanism whereby plants fine-tune flowering time through a PHYB–FOF2–VOZ2 module that modulates FLC expression in response to changes in light quality.

聚四氟乙烯/SiO_(2)复合纤维膜的制备及性能

通过静电纺丝技术制备了具备超疏水性能的PVA/PTFE/SiO_(2)油水分离纤维膜。用SiO_(2)颗粒对聚乙烯醇(PVA)/聚四氟乙烯(PTFE)纤维膜进行二级粗糙结构的构建,得到PVA/PTFE/SiO_(2)复合纤维膜,用X射线衍射、疏水角测试、扫描电子显微镜、能谱、热重-差热分析、红外光谱分析及X射线光电子能谱分析对复合纤维膜进行表征,并对其进行油水分离性及稳定性实验。结果表明,添加SiO_(2)颗粒提高了纤维膜的疏水性能,当SiO_(2)颗粒的质量分数为0.5%时,纤维膜的疏水角平均值达到最大158.9°;该复合膜对不同油水混合物的分离效率均在99.2%以上,循环分离20次后的效率仍保持在98.6%以上。在油水分离方面表现出巨大的应用潜力,同时也表现出优异的稳定性能。

Numerical Simulation of U-Shaped Metal Rings in a Wind-Sand Environment

The interaction of U-shaped rings used for power transmission hardware with a wind-sand field is simulated numerically.A standard k
turbulence model is used in synergy with an Eulerian-Lagrangian approach.The results show that the wind pressure on the windward side of the U-shaped ring is the highest,a negative pressure zone appears on both sides of the U-shaped ring,while a Kármán Vortex Street is created on its leeward side.There are three possible regimes of motion for the sand grains in the wind field.Sand grains with size below 0.125 mm can follow the airflow directly into the contact area of two U-shaped rings.When the sand size is about 0.1 mm,the number of sand grains that are blown into the contact area attains a maximum.Through the simulation of U-shaped rings in the wind-sand field,the dynamics of such processes are explained in detail,thereby providing relevant information for the subsequent protection and design of connecting hardware used for power transmission.

Research on Meteorological Information Transmission Mechanism in the Age of All Media

This paper takes the Fujian Meteorological Service Center as the research objective, and uses the methods of departmental data sharing and network search to study the dissemination mechanism of meteorological information in the whole media era. The result shows that it is of great significance to actively adapt to the characteristics of information dissemination in the all-media era, establish and improve meteorological information service rules and supervision mechanisms, actively explore strong measures to strengthen the monitoring of meteorological services, promptly release authoritative voices, curb the breeding of rumors, regulate the propagation path, and conduct meteorological information dissemination assessment. Finally, this paper proposes the construction of meteorological information dissemination mechanism from five aspects: service quality assessment, introduction of enterprise information filing and credit management system, establishment of authoritative meteorological information sharing channels, formulation of emergency response plans, and vigorous promotion of meteorological popularization. The mechanism provides a theoretical reference for the meteorological department to better adapt to the all-media context and to carry out scientific and effective media-based public opinion information risk management.

FKF1 F-box protein promotes flowering in part by negatively regulating DELLA protein stability under long-day photoperiod in Arabidopsis^FA

FLAVIN-BINDING KELCH REPEAT F-BOX 1(FKF1)encodes an F-box protein that regulates photoperiod flowering in Arabidopsis under long-day conditions(LDs).Gibberellin(GA)is also important for regulating flowering under LDs.However,how FKF1 and the GA pathway work in concert in regulating flowering is not fully understood.Here,we showed that the mutation of FKF1 could cause accumulation of DELLA proteins,which are crucial repressors in GA signaling pathway,thereby reducing plant sensitivity to GA in flowering.Both in vitro and in vivo biochemical analyses demonstrated that FKF1 directly interacted with DELLA proteins.Furthermore,we showed that FKF1 promoted ubiquitination and degradation of DELLA proteins.Analysis of genetic data revealed that FKF1 acted partially through DELLAs to regulate flowering under LDs.In addition,DELLAs exerted a negative feedback on FKF1 expression.Collectively,these findings demonstrate that FKF1 promotes flowering partially by negatively regulating DELLA protein stability under LDs,and suggesting a potential mechanism linking the FKF1 to the GA signaling DELLA proteins.

An Overview of Russian Emigre Literature in Shanghai

After the October Revolution, those against the Bolshevik regime started to leave Russia, including Russian aristocrats, officials, capitalists and intellectuals. Some of them were exiled to the cities of China. Among them, Shanghai was the largest after Harbin Russian overseas center. Russian emigres in Shanghai managed to create their own cultural life, and some of them were even engaged in literary creation. Thus, Russian emigre literature came into being in Shanghai. In order to have a more comprehensive grasp of Shanghai Russian literature, this thesis provides a general introduction about newspapers, periodicals, publishing houses, art and literary groups, main writers and creation themes of overseas Russians in Shanghai.

LDformer:a parallel neural network model for long-term power forecasting

Accurate long-term power forecasting is important in the decision-making operation of the power grid and power consumption management of customers to ensure the power system’s reliable power supply and the grid economy’s reliable operation.However,most time-series forecasting models do not perform well in dealing with long-time-series prediction tasks with a large amount of data.To address this challenge,we propose a parallel time-series prediction model called LDformer.First,we combine Informer with long short-term memory(LSTM)to obtain deep representation abilities in the time series.Then,we propose a parallel encoder module to improve the robustness of the model and combine convolutional layers with an attention mechanism to avoid value redundancy in the attention mechanism.Finally,we propose a probabilistic sparse(ProbSparse)self-attention mechanism combined with UniDrop to reduce the computational overhead and mitigate the risk of losing some key connections in the sequence.Experimental results on five datasets show that LDformer outperforms the state-of-the-art methods for most of the cases when handling the different long-time-series prediction tasks.

激光熔覆Ni-Al/Al_(2)O_(3)-13%TiO_(2)金属陶瓷涂层的组织性能研究

为了进一步研究激光熔覆Ni-Al/Al_(2)O_(3)-13%TiO_(2)金属陶瓷涂层的硬度及耐磨性,应用YLS-2000光纤激光器在45钢基体上分别制备Ni-Al涂层及Ni-Al/Al_(2)O_(3)-13%TiO_(2)金属陶瓷涂层。通过金相显微镜、扫描电子显微镜、X射线能谱分析、X射线衍射等系统地研究涂层的组织形貌、物相组成及元素分布。采用HXD-1000TB维氏硬度仪测定涂层截面显微硬度分布,利用M-2000磨损试验机进行磨损试验。结果表明,Ni-Al/Al_(2)O_(3)-13%TiO_(2)金属陶瓷涂层的宏观成形质量较好,无裂纹,其涂层的截面最高硬度约为Ni-Al涂层的2倍,约为基体的4倍;其磨损体积约是45钢基体的1/8,相较于Ni-Al涂层的磨损体积降低了30%。Ni-Al/Al_(2)O_(3)-13%TiO_(2)金属陶瓷涂层组织更加均匀致密,其硬度及耐磨性能相较于Ni-Al涂层及基体材料显著提升,该研究对于金属陶瓷材料的整体性能分析具有一定的参考意义。

F-box gene FOA2 regulates GA-and ABA-mediated seed germination in Arabidopsis

Dear Editor, GA and ABA antagonize each other in controlling seed germination, but the molecular mechanism is not fully understood. The F-box proteins act as the most important SCF （SKP1, cullin/CDC53, F-box protein） complex subunit of the ubiquitin （Ub）- 26S proteasome system, mediate diverse physiological processes ranging from hormonal signaling cascades to environmental stress responses （Santner and Estelle, 2010）. We previously demonstrated that FOAl （F-box overexpressed/oppressed ABA signaling） is an ABA signaling-related gene,