Countermeasures for Establishing a Long-term Security Mechanism for Landless Farmers

In the process of urbanization,farmers will inevitably lose their land,which is resulted from the large-scale requisition of rural collective land.The imperfect social security system in rural areas has resulted in a large number of landless farmers being transformed into urban poor people.Therefore,proper resettlement of landless farmers and the establishment of a long-term security mechanism for ensuring the basic livelihood of landless farmers are important issues that need to be resolved in the process of China’s social and economic development.

The Long-Term Effective Mechanism of Rural Poverty Alleviation in China from the Perspective of Ecological Management

Based on the ecological environmental situation of poverty-stricken areas in China and the domestic and foreign research results,the long-term effective mechanism of sustainable poverty alleviation in China is established(the ideological premise is ecological culture,the material base is ecological economy and the basic guarantee is ecological system) from the perspective of ecological management.To be specific,ecological culture,the ideological premise of rural sustainable poverty alleviation in China,includes two aspects:the first one is upholding the Marxism,passing on the Chinese traditional ecological wisdom and fostering ecological consciousness;the second one is mirroring the thought of western modern ecological ethics,emphasizing ecological criticism and redoubling the ecological education.As for ecological economy,the material guarantee for sustainable poverty alleviation in Chinese rural poverty-stricken areas,also contents two aspects.The first one is promoting the way of "clean production" and developing ecological industry;the second one is building ecological concept of consumption and establishing the ecological lifestyle.In addition,ecological system,the basic guarantee of sustainable poverty alleviation in Chinese rural poverty-stricken areas,covers three terms.The first one is implementing the ecological policies and stipulating ecological plan;the second one is establishing perfect ecological legislation and ecological system and intensifying their implementation;the third one is enforcing ecological management in the process of sustainable poverty alleviation.Through the establishment of the above mechanism,we look forward to realizing sustainability of economic development and poverty alleviation effects in the process of poverty alleviation in Chinese rural areas,as well as ecological management of the poverty-stricken areas.

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Fe-Ni-Co-BASE SUPERALLOY AFTER LONGTERM AGING AT 650℃

The microstructure and mechanical properties of a Ni-Fe-Co base superalloy with low thermal expansion coefficient after aging at 650℃ for 200,500,1000 and 2000 h have been investigated.It was found that they are stable at 650℃.This alloy is believed to.fill the re- quirements for long time service to aircraft engine.

Alkali-Silica Reaction Inhibited by LiOH and Its Mechanism

A high alkali reactive aggregate zeolitization perlite was used to test the long term effectiveness of LiOH in inhibiting alkali silica reaction.In this paper,the rigorous conditions were designed that the mortar bars had been cured at 80℃ for 3 years after autoclaved 24 hours at 150℃.Under this condition,LiOH was able to inhibit the alkali silica reaction long term effectiveness.Not only the relationship between the molar ratio of n(Li)/(Na) and the alkali contents in systems was established, but also the governing mechanism of such effects was also studied by SEM.

Building Indoor Dangerous Behavior Recognition Based on LSTM-GCN with Attention Mechanism

Building indoor dangerous behavior recognition is a specific application in the field of abnormal human recognition.A human dangerous behavior recognition method based on LSTM-GCN with attention mechanism(GLA)model was proposed aiming at the problem that the existing human skeleton-based action recognition methods cannot fully extract the temporal and spatial features.The network connects GCN and LSTMnetwork in series,and inputs the skeleton sequence extracted by GCN that contains spatial information into the LSTM layer for time sequence feature extraction,which fully excavates the temporal and spatial features of the skeleton sequence.Finally,an attention layer is designed to enhance the features of key bone points,and Softmax is used to classify and identify dangerous behaviors.The dangerous behavior datasets are derived from NTU-RGB+D and Kinetics data sets.Experimental results show that the proposed method can effectively identify some dangerous behaviors in the building,and its accuracy is higher than those of other similar methods.

Design,construction and mechanical behavior of relics of complete large Longyou rock caverns carved in argillaceous siltstone ground

This paper presents a comprehensive summary of data, analyses and findings from the investigations over the past twelve years about the relics of large Longyou rock caverns carved about 2 000 years ago at shallow depths in argillaceous siltstone. The paper presents the typical features associated with the rock caverns. They include structures, large spans, portals, extreme shallow-buried depths, imprints, drainages, inclined ceiling, inclined sidewalls, slender rock pillars, rock staircases, site and strata selections, caving lighting, carving method, and underground construction surveying. They are used to reconstruct and highlight the design and construction methods adopted by the ancients. The paper further demonstrates that the relics of the complete large rock caverns are a consequence of coincidental combinations of ancient human effort and natural factors. The full occupation of water with weak acidity in the large rock caverns with the soft surrounding rocks of weak alkalinity is found to be the main factor ensuring and preserving the caverns to have been stable and integral over 2 000 years. However, the five unwatered complete rock cavern relics have been experiencing various deteriorations and small failures including cracks, seepage, small rock falls and delaminating ceiling rocks. Although these deteriorations have been repaired and stabilized effectively, the paper demonstrates that an entire roof collapse failure is highly possible in the near future to each of the five unwatered rock cavern relics. The findings presented in this paper are also invaluable both to the long-term protection and preservation of the large rock cavern relics of national and international interests and importance, and to extend and enrich our experience and knowledge on the long-term stability and integrity of man-made underground rock cavern engineering projects.

Long-term acupuncture treatment has a multitargeting regulation on multiple brain regions in rats with Alzheimer＇s disease：a positron emission tomography study

The acute effect of acupuncture on Alzheimer＇s disease,i.e.,on brain activation during treatment,has been reported.However,the effect of long-term acupuncture on brain activation in Alzheimer＇s disease is unclear.Therefore,in this study,we performed long-term needling at Zusanli（ST36）or a sham point（1.5 mm lateral to ST36）in a rat Alzheimer＇s disease model,for 30 minutes,once per day,for 30 days.The rats underwent 18F-fluorodeoxyglucose positron emission tomography scanning.Positron emission tomography images were processed with SPM2.The brain areas activated after needling at ST36 included the left hippocampus,the left orbital cortex,the left infralimbic cortex,the left olfactory cortex,the left cerebellum and the left pons.In the sham-point group,the activated regions were similar to those in the ST36 group.However,the ST36 group showed greater activation in the cerebellum and pons than the sham-point group.These findings suggest that long-term acupuncture treatment has targeted regulatory effects on multiple brain regions in rats with Alzheimer＇s disease.

MICROSTRUCTURES AND PROPERTIES OF DZ40M Co-BASED SUPERALLOY AFTER LONG-TERM AGEING AT 850℃

ＩＮＴＲＯＤＵＣＴＩＯＮＤＺ４０ＭｉｓａｎｅｗｌｙｄｅｖｅｌｏｐｅｄｄｉｒｅｃｔｉｏｎａｌｙｓｏｌｉｄｉｆｉｅｄｃｏｂａｌｔｂａｓｅｄｓｕｐｅｒａｌｏｙｂａｓｅｄｏｎｃｏｎｖｅｎｔｉｏｎａｌＸ４０．ＣｏｍｐａｒｅｄｗｉｔｈＸ４０，ｉｔｈａｓａｈｉ...

Strategic Analysis on Objectives of National Grain Security

Price of global agricultural products rises with great fluctuation. China's food price also increases constantly. This leads to high concern of both at home and abroad for food and grain security. On the basis of making an overall analysis on current situation of grain security and making judgment on future grain security in China,this paper analyzed objectives,strategies and policies of national grain security in the new period. Finally,it came up with strategies and policy recommendations for improving agricultural production and guaranteeing national grain security.

Could Long-Term Stability Last Forever?

The subject of the present paper is to prove that the recently introduced conjecture of boundedness puts a ban over the view of stability as asymptotic property. This result comes in sharp contrast with the prescription of the traditional thermodynamics and statistical physics which consider the existence of equilibrium as asymptotic property of all systems. The difference commences from the use of infinitesimal calculus as the basic implement for modelling by the latter while the primary premise of the conjecture of boundedness is sustaining the energy/matter/information permanently bounded and finite. The latter property overrules the infinitesimal calculus as the major implement of modelling because, among all, it is proven that the traditional one suffers unsoluble difficulties.

地方高校服务乡村振兴的长效机制构建:原则、目标与路径

实施乡村振兴战略是推进中国式现代化的必由之路,是解决新时代“三农”问题的总抓手,同时也是关乎国计民生的全局性事业。地方高校作为服务区域经济社会发展的重要载体,与乡村振兴的本质要求具有内在的系统耦合性,是乡村发展的支撑力量。因此,构建地方高校促进乡村振兴长效机制具有重要的时代价值和实践意义。文章认为基于习近平总书记在党的二十大报告中提出的“系统观念”指引,须遵循科学性、全面性和可持续性的基本原则,以协调发展、治理有效和共同富裕为主要目标,通过加强高校乡村有效衔接、促进优秀人才有效参与、推进知识技术有效转化的联动路径,构建起地方高校服务乡村振兴的长效机制,是乡村高质量振兴的必要保障。

深度学习在钢结构货架变形预测中的应用研究

随着工业化和物流行业的发展,钢结构货架在仓储和物流系统中越来越重要,因此准确预测其变形至关重要。文章介绍了一种基于双向长短时记忆网络(BiLSTM)和注意力机制的预测算法,该算法利用时间序列数据,通过深度学习模型进行训练,能够更细致地分析和预测钢结构货架的变形。结合一个典型应用验证了模型性能,证实了其高稳健性和出色的预测精度。实验结果表明,该模型能够准确地预测钢结构货架的变形情况,其平均误差仅为0.15%~3.33%。这些结果表明了该算法在钢结构货架自动化监测领域的潜在应用前景,为其结构变形预测提供了一种可行的解决方案。

基于注意力机制LSTM的电离层TEC预测

电离层总电子含量(Total Electron Content,TEC)的监测与预报是空间环境研究的重要内容,对卫星通讯和导航定位等有重要意义.TEC值影响因素较多,很难确定精确物理模型来对其进行预测.本文设计了基于注意力机制的LSTM模型(Att-LSTM),采用过去24小时TEC观测数据对未来TEC进行预测.选择北半球东经100°上,每2.5°纬度选择一个位置,共计36个位置来验证本文提出模型的性能,并与主流的深度学习模型如DNN、RNN、LSTM进行对比实验.取得了如下成果:(1)在选定的36个地区未来2小时单点预测上,基于本文的Att-LSTM模型的TEC预测性能明显优于其他对比模型;(2)讨论了纬度对Att-LSTM预测未来2小时TEC值时性能的影响,发现在北纬0°到60°之间,Att-LSTM预测性能随着纬度的升高而略有降低,在北纬62.5°~87.5°之间,模型预测性能出现扰动,预测效果略差;(3)讨论了磁暴期和磁静期模型的预测性能,发现无论是磁暴期还是磁静期,本文模型预测性能均较好;(4)还讨论了对未来多时点预测效果,实验结果表明,本文所提出的模型对未来2、4个小时的预测拟合度R-Square均超过0.95,预测结果比较可靠,对未来6、8、10个小时预测拟合度最高为0.7934,预测拟合度R-Square下降迅速,预测结果不可靠.

公立医院高质量发展背景下医院运营管理工作的探索与思考

加强运营管理是公立医院高质量发展的重要内容,也是实现公立医院高质量发展的必然要求。坚持和加强党对公立医院的全面领导,建立不断完善的运营管理体系和长效机制,健全运营管理人才学习培养机制,以智慧医院建设为契机,提高医院智慧运营信息化管理水平,对公立医院高质量发展具有重要意义。

高校创新创业教育“赛创融合”评价机制构建

普通高校创新创业教育具有综合性、实践性、创造性等显著特征,既是大学生学习效能提高的重要途径与方法,同时也是中国式现代化建设人才所应具备的核心素养和关键能力的终极性表达。“赛创融合”是提升创新创业教育实施质量的重要路径,也是构建其长效激励机制的有效手段。化结果导向型为过程激励型的评价改革,是促进这一激励机制长效化的关键。高校和教师在“赛创融合”中不仅要能够甄别大学生在创新创业教育中的学习缺陷,还要为学生提供更好的学习指导,将大学生创新创业教育落实落细落长远,最终实现学生终身学习能力的培养。通过开发设计用于过程激励型评价的奖励函数,并以问卷获得学生状态的转移概率矩阵,基于最大化学生可能获得奖励的方式进行仿真,修正和改进评价指标,能够实现创新创业教育长效激励机制严密科学可操作,提升其过程激励型评价效能。

融合多源异构气象数据的光伏功率预测模型

高精度光伏功率预测对提高电力系统运行效率具有重要意义。光伏功率受多种因素影响,其中云层的变化是最主要的不确定因素。传统光伏功率预测方法没有充分考虑云的3维结构和气象要素对光伏功率的影响。因此,该文提出一种融合多源异构气象数据的多源变量光伏功率预测模型(MPPM)。MPPM的核心包括时空条件扩散模型(STCDM)、注意力堆叠LSTM网络(ASLSTM)和多维特征融合模块(MFFM)。STCDM模型通过对2维卫星云图进行精确预测,消除了云层边界处的模糊现象。ASLSTM模型则提取了3维天气研究与预报模式(WRF)气象要素特征。MFFM模块将2维卫星云图特征和3维WRF气象要素特征进行融合,以得到未来1 h光伏功率预测结果。该文分别利用STCDM模型和MPPM模型开展卫星云图预测实验和光伏功率预测实验。实验结果显示,STCDM模型预测1 h内卫星云图的结构相似性指数(SSIM)达到0.914,MPPM模型预测1 h内光伏功率的相关系数(CORR)达到0.949,优于所有对比算法。

乡村振兴背景下建立农村人居环境长效管护机制的挑战与智慧化进路

全面推进乡村振兴,加快建设宜业宜居乡村更具现实紧迫性,对未来我国农村人居环境的整治成效、治理能力以及持续性管护提出了新要求。数字赋能农村人居环境长效管护治理体系、推动治理能力现代化,使长效管护工作执行便捷化,利于多方管护主体协同共治,创新了长效管护监督新格局。农村人居环境长效管护机制初步探索之期,面临农村地区人居环境基础条件不健全、管护资源匮乏、农民群众参与度较低、管护主体联动困难、人居环境监督不到位等障碍与挑战。针对此种状况,应将数字治理方式引入农村人居环境整治行动中,推进农村人居环境长效管护机制的智慧化设计,充分发挥数字技术对人居环境长效管护工作的推动作用,实现数字赋能农村人居环境生态宜居和美持续化、长效化,进而有效助力乡村振兴。

基于注意力机制与LSTM-CCN的月降水量预测

针对现有月降水量预测方法预测准确性不高的问题,提出一种基于注意力机制与LSTM-CCN的月降水量预测方法。首先,利用长短时记忆神经网络(long short-term memory neural network,LSTM)提取气象数据在时间维度的特征分布,从时间相关性方面捕获相邻时间段或长距离气象数据段中的统计分布;其次,利用因果卷积神经网络(causal convolutional network,CCN)将气象数据映射到空间维度,深层次地从空间维度捕获气象数据在空间中的特征统计分布;再次,以并联的方式将时间和空间特征作为交叉注意力网络的输入,构造融合的时空特征;最后,以长短时记忆神经网络构造解码器,并将融合的时空特征作为解码器的输入,预测的月降水量作为输出。选取河南省新乡市2001~2017年数据集进行测试,结果表明:所提出方法的均方根误差仅为13.08 mm,相比主流方法具有更低的预测误差。研究成果可为提高气象预测的准确性和实用性提供参考。

情境优化、结构重塑与行为纠偏:农村生态河道长效管护的路径突破

加强农村河湖管理是实施乡村振兴战略的重要任务。在自上而下的政策引导下,各级政府全面推进农村生态河道建设工作。然而,农村生态河道管护是一项长期任务和系统工程。反思既有研究从单一维度分析农村生态河道管护的局限性,在对P镇生态河道管护的运行逻辑及长效机制分析基础上发现农村生态河道要实现真正意义上的长效管护,必须构建集保障、组织、运行于一体的管护体系,并从情境优化、结构重塑、行动纠偏等三个层面提出相应的治理思路。

高校基金会支持大学生创新创业长效机制研究

基于“科教兴国”的战略导向和产教融合、科教融汇的高校建设发展需要,高校基金会应充分发挥其协同内外的功能优势支持大学生创新创业。依据企业生命周期理论,可以将高校基金会支持大学生创新创业划分为准备期、孵化期、成熟期、退出期四个阶段,各阶段对应创新创业项目的成长历程,呈现出不同的特征。基于此,构建涵盖创新创业四阶段的高校基金会支持大学生创新创业发展的长效机制,可为高校基金会参与大学生创新创业工作提供有益借鉴。