Pathway and Countermeasure of Farmers Livelihood Transformation in the Ecological Development Area of Northern Guangdong Province from the Perspective of Ecological Protection

[Objectives]To explore pathways and countermeasures for transforming farmers livelihoods in the way of reducing their dependence on land while promoting sustainable development and alleviating ecological degradation.[Methods]A combination of field research,literature review,and policy analysis was employed to identify key factors affecting farmers livelihoods and potential strategies for transformation.[Results]The study found that developing ecological agriculture and modern agriculture,promoting agricultural transformation and upgrading,cultivating alternative industries,strengthening ecological engineering construction,and establishing diversified ecological compensation methods and supporting policies are effective strategies for transforming farmers livelihoods.[Conclusions]Implementing these strategies can help alleviate the contradiction between ecological protection and farmers livelihood development,promoting coordinated development of both.This approach not only benefits farmers but also contributes to sustainable environmental management and biodiversity conservation.

Variational Mode Decomposition-Informed Empirical Wavelet Transform for Electric Vibrator Noise Analysis

Electric vibrators find wide applications in reliability testing, waveform generation, and vibration simulation, making their noise characteristics a topic of significant interest. While Variational Mode Decomposition (VMD) and Empirical Wavelet Transform (EWT) offer valuable support for studying signal components, they also present certain limitations. This article integrates the strengths of both methods and proposes an enhanced approach that integrates VMD into the frequency band division principle of EWT. Initially, the method decomposes the signal using VMD, determining the mode count based on residuals, and subsequently employs EWT decomposition based on this information. This addresses mode aliasing issues in the original method while capitalizing on VMD’s adaptability. Feasibility was confirmed through simulation signals and ultimately applied to noise signals from vibrators. Experimental results demonstrate that the improved method not only resolves EWT frequency band division challenges but also effectively decomposes signal components compared to the VMD method.

融合Transformer和卷积LSTM的轨迹分类网络

为了减少原始轨迹数据的噪声,充分提取轨迹的时空特征,提高基于轨迹数据的交通模式分类精度,提出一种融合堆叠降噪自编码器、Transformer和卷积长短期记忆网络的轨迹分类网络(networks fusing stacked denoising auto-encoder, Transformer and ConvLSTM,SDAETC)。通过堆叠降噪自编码器减少原始轨迹数据中的噪声;利用结合了Transformer的递归图自编码器,提取到更为丰富的时间特征,同时利用特征图自编码器提取空间特征;改进卷积长短期记忆网络,充分提取轨迹中的时空特征,并与提取到的时间特征和空间特征相融合,从而实现交通模式分类。实验结果表明,提出的SDAETC与基线模型相比,在GeoLife和SHL数据集上的准确率分别提升了1.8%和2%。此外,消融实验结果和模型训练时间分析表明,引入堆叠降噪自编码器、Transfomer和ConvLSTM虽然增加了时间消耗,但是对分类精度有积极贡献。

基于自适应噪声完全集合经验模态分解与BiLSTM-Transformer的锂离子电池剩余使用寿命预测

锂离子电池剩余使用寿命(remaining useful life,RUL)是使用者十分关心的问题,其涉及电池的更换时间和安全。针对锂离子电池的电容量非线性变化趋势,提出了一种基于自适应噪声完全集合经验模态分解与双向长短期记忆网络-Transformer的锂离子电池剩余使用寿命预测方法。首先,利用自适应噪声完全集合经验模态分解方法对锂离子电池电容量数据进行分解。其次,使用串联的双向长短期记忆神经网络和Transformer网络对分解后得到的残差序列和本征模态分量序列进行建模预测。最后,将预测的若干本征模态分量序列和残差序列进行求和,并对求和之后的最终预测数据与原始数据进行RUL预测。采用NASA公开的电池数据集对所提方法进行验证,结果表明,所提方法的平均绝对误差、均方根误差、平均绝对百分比误差和绝对误差控制分别控制在0.0173、0.0231、1.2084%和3个循环周期以内,能够有效地提高锂离子电池RUL的预测精度。

Surface plasmon polariton and mode transformation in a nanoscale lossy metallic cylindrical cable

A theoretical investigation on the surface plasmon polariton in a gold cylindrical nanocable is presented. By solving a complete set of Maxwell＇s equations in the nanocable （with a 50 nm radius gold nanocore, 10-300 nm silica layer, and 30-200nm gold nanocladding）, the dispersion relations on the optical frequency and on the silica thickness are discussed. When the silica thickness varies from 50 to 250 nm, at a fixed waveleltgth, the strong coupling between the gold nanocore and the nanocladding leads to a symmetric-like surface mode and an antisymmetric-like surface mode in the nanocable. The transformation between the surface mode and the waveguide mode in this structure is also investigated. The results will be helpful for understanding the surface waves in the subwavelength structures.

Exploration of New Financing Mode of Farmers' Co-operatives——A Case of Guangxi Zhuang Autonomous Region,China

Based on the overview of the role played by farmers' co-operatives in developing rural economy and existing problems,the thesis has introduced the factors which influence the development of farmers' co-operatives including five aspects,namely conditions of scale economy,popularization and application of agricultural production technology,comparative advantage,market expectancy and government support.By analyzing typical cases of three co-operatives in Guangxi(Heng County Dadi Growing Co-operatives,talents-leading share-holding co-operatives;Long'an County Guixiniu Co-operatives,co-operatives led by leading-enterprise;Nanning City Tanluo Town Jinguang Fruits and Potatoes Co-operatives,co-operatives led by leading-enterprise),the way to develop farmers' co-operatives by dint of the external capital has been discussed.The results demonstrate that conditions of scale economy,popularization and application of agricultural production technology,comparative advantage,excellent market expectancy and government support,are conducive to absorbing external capital.Under China's existing economic conditions,the government should normalize the use and allocation procedure of program fund.

Price prediction of power transformer materials based on CEEMD and GRU

The rapid growth of the Chinese economy has fueled the expansion of power grids.Power transformers are key equipment in power grid projects,and their price changes have a significant impact on cost control.However,the prices of power transformer materials manifest as nonsmooth and nonlinear sequences.Hence,estimating the acquisition costs of power grid projects is difficult,hindering the normal operation of power engineering construction.To more accurately predict the price of power transformer materials,this study proposes a method based on complementary ensemble empirical mode decomposition(CEEMD)and gated recurrent unit(GRU)network.First,the CEEMD decomposed the price series into multiple intrinsic mode functions(IMFs).Multiple IMFs were clustered to obtain several aggregated sequences based on the sample entropy of each IMF.Then,an empirical wavelet transform(EWT)was applied to the aggregation sequence with a large sample entropy,and the multiple subsequences obtained from the decomposition were predicted by the GRU model.The GRU model was used to directly predict the aggregation sequences with a small sample entropy.In this study,we used authentic historical pricing data for power transformer materials to validate the proposed approach.The empirical findings demonstrated the efficacy of our method across both datasets,with mean absolute percentage errors(MAPEs)of less than 1%and 3%.This approach holds a significant reference value for future research in the field of power transformer material price prediction.

Toward Modelling of Transformational Change Processes in Farm Decision-Making

In the coming decades, agricultural systems will have to adapt to tremendous challenges. Behavioral models have important potential to better understand and steer changes toward sustainability brought about by this context. Relying on a literature review, we distinguish incremental changes (extensions of what is already done) and transformational changes, which involve the reorientation of a considerable amount of farming activities. Transformational changes are particularly important in the context of global change. Existing integrated modelling frameworks based on behavioral theories are suited for incremental changes, but remain limited for transformational changes. Qualitative studies provide important insights on two key aspects of transformational changes, learning and social relations, but they have not been explicitly oriented toward computer modelling yet. Based on this literature and three seminal decision-making approaches, we propose a description of transformational change processes in farm decision-making, as a first step toward an implementation in agent-based models.

The Theoretical Foundation and its Mode Transformation of Rural Public Goods Supply in the Perspective of Organizational Competition

Theoretical expositions of public goods supply by the liberalism,new institutionalism and the school of public choice are conducted in the perspective of organizational competition.And the theoretical foundation of rural public goods is put forward.Then,the changes of the supply mode of rural public goods are discussed before and after the tax reform,that is,the "Community Cooperation" supply mode of rural public goods before the tax reform and the "Organization Cooperation" supply mode of rural public goods after the tax reform.Finally,the diversification of rural public goods supply in China in future is forecasted.

Characteristics and advantages of energy performance contracting mode for energy saving transformation of existing large public building

Existing large-scale public building energy saving renovation is the inherent requirement of sustainable development, it has been proved that implementing the energy performance contracting mode in the Existing large public buildings energy-saving is an effective way both at home and abroad. EPC mode has obvious characteristics for the ESCO and the customers, it can meet the basic requirements of large public buildings energy-saving, such as the width of funding sources, program specifi cation, advanced technology, information fl ow and management level higher, etc. Under the condition of market economy, it also provides a broad platform for the ESCO implements building energy saving transformation, which is conducive to the realization of the win-win cooperation between the parties, and to promote the healthy development of the existing large public building energy saving reconstruction.

Basic conditions study to accelerate the realization of transformation of Shaanxi＇s economy growth mode

It is an urgent and important economic work in the moment and the next period for China to realize the transformation of economic growth mode. Relatively, there must be certain basic conditions. This article makes elaboration of the basic conditions, which accelerate the change of Shaanxi＇s economic growth mode from government angle, and proposes countermeasures for it, according to Shaanxi＇s situation and the requirement of scientific development concept, in order to provide basis for the government＇s economic growth transformation.

Transformation of the Growth Mode:What Must Be Changed?

That the Chinese economy has been burgeoning for nearly 30 years is an irrefutable fact.However,this robust growth has been achieved amidst accusations of"extensive"development and"low-efficiency".Many scholars believe that low-priced labour is pivotal to China’s rapid growth.Even so,we find it hard to explain why China has been able to achieve sustained growth while so many countries with even lower labour costs remain trapped in poverty The following article offers a new perspective upon this paradox.

Present Situation and Development Mode of Chinese Farmers' Cooperative Organizations

In developed countries,the typical modes of farmers' cooperative organizations are " German mode", " Japan and South Korea mode" and " American mode". The development of farmers' cooperative organizations in China is the product of need and being needed,with low level of specialization,systematism and industrialization. However,Chinese farmers' cooperative organizations have the advantages of diversification,full supporting and great opportunities of Internet economy and e-commerce environment. Based on that,this paper puts forward the " Chinese mode" for the development of farmers' cooperative organizations in China in the future,that is,the main body of innovation and entrepreneurship will unite,and the other entities of production and industry will follow them.

Nonstandard Unitary Transformations of Quantum States

In quantum optics, unitary transformations of arbitrary states are evaluated by using the Taylor series expansion. However, this traditional approach can become cumbersome for the transformations involving non-commuting operators. Addressing this issue, a nonstandard unitary transformation technique is highlighted here with new perspective. In a spirit of “quantum” series expansions, the transition probabilities between initial and final states, such as displaced, squeezed and other nonlinearly transformed coherent states are obtained both numerically and analytically. This paper concludes that, although this technique is novel, its implementations for more extended systems are needed.

Coordinate-Dependent One- and Two-Mode Squeezing Transformation and the Corresponding Squeezed States

We introduce the coordinate-dependent one-and two-mode squeezing transformations and discuss theproperties of the corresponding one-and two-mode squeezed states.We show that the coordinate-dependent one-and two-mode squeezing transformations can be constructed by the combination of two transformations,a coordinate-dependentdisplacement followed by the standard squeezed transformation.Such a decomposition turns a nonlinear problem intoa linear one because all the calculations involving the nonlinear one- and two-mode squeezed transformation have beenshown to be able to reduce to those only concerning the standard one- and two-mode squeezed states.

Agricultural Development Mode Transformation and Government Functions in Guizhou Province

Based on the brief account of the connotation of transforming economic development pattern and government functions,the thesis will introduce the development status of agricultural economy in Guizhou Province:firstly,single agricultural industrial structure;secondly,large gap between urban and rural development;thirdly,low-level utilization of agricultural science and technology;fourthly,fierce contradiction between agricultural mode of production and ecological environment.Then it analyzes the basic requirements for government functions in transforming the development pattern of agricultural economy in Guizhou Province:the first one is the function to guide sustainable development and the structural adjustment of agricultural production;the second is the function to coordinate urban-rural development and equally supply basic public goods;the third is the function to input science and technology to serve agriculture;the fourth one is the dominant function to promote the harmonious development of man and nature as well as to reduce the number of peasants.In order to promote the transformation of agricultural development mode and maintain the sound and rapid economic development,some corresponding measures and suggestions are proposed from the perspective of government functions:firstly,promoting the optimization and upgrading of industrial structure;secondly,the government should take the lead in providing rural public goods;thirdly,strengthening the skills training and technological education of rural labor force;fourthly,reducing the number of farmers and retaining the farmers.

基于CEEMDAN-Transformer的灌浆流量混合预测模型

灌浆流量是最重要的水利工程灌浆参数之一,通过对灌浆流量的有效预测,可以实现对异常工况的提前响应,以保障施工质量与工程安全。然而由于灌浆过程面临的复杂地质情况,灌浆流量数据存在强非线性与波动性的特点,难以获得令人满意的计算精度。现有灌浆流量预测存在的不足如下:传统神经网络模型对时间序列特征提取和加工处理不足,导致预测精度有限;传统神经网络模型测试集进行一次计算仅能输出一个结果,进行多个时间步预测需要繁杂的多次计算;单测点预测结果预测时间短并且无法反映灌浆流量序列变化的整体趋势,不利于控制灌浆流量和保障施工质量。针对上述问题,本研究提出基于CEEMDAN-Transformer的灌浆流量混合预测模型。基于完全自适应噪声集合经验模态分解(Complete Ensemble Empirical Mode Decomposition with Adaptive Noise,CEEMDAN)方法将灌浆流量分解为本征模函数与残差信号,解决灌浆流量数据的非线性与强波动的问题;采用多头注意力Transformer实现多个本征模函数(Intrinsic Mode Function,IMF)序列到序列的预测,采用多头注意力机制来构建输入和输出的全局依赖关系,提升时间序列参数特征提取水平;最后,建立时序测点多输入多输出模型实现灌浆流量预测,提升多输出序列计算效率,反映整体趋势的多输出序列能够为灌浆流量控制提供参考。工程应用结果表明,本研究提出的基于CEEMDAN-Transformer的灌浆流量混合预测模型具有较好的计算精度和计算效率。

Transformation of alkali and alkaline-earth metals during coal oxy-fuel combustion in the presence of SO_2 and H_2O

The occurrence modes of alkali and alkaline-earth metals（AAEMs） in coal relate to their release behavior and ash formation during combustion. To better understand the transformation of AAEMs,the release behavior of water-soluble,HCl-soluble,HCl-insoluble AAEMs during Shenmu coal（SM coal） oxy-fuel combustion in the presence of SO2 and H2O in a drop-tube reactor was investigated through serial dissolution using H2O and HCl solutions. The results show that the release rates of AAEMs increase with an increase in temperature under the three atmospheres studied. The high release rates of Mg and Ca from SM coal are dependent on the high content of soluble Mg and Ca in SM coal. SO2 inhibits the release rates of AAEMs,while H2O promotes them. The effects of SO2 and H2O on the Na and K species are more evident than those on Mg and Ca species. All three types of AAEMs in coal can volatilize in the gas phase during coal combustion. The W-type AAEMs release excessively,whereas the release rates of I-type AAEMs are relatively lower. Different types of AAEM may interconvert through different pathways under certain conditions. Both SO2 and H2O promote the transformation reactions. The effect of SO2 was related to sulfate formation and the promotion by H2O occurs because of a decrease in the melting point of the solid as well as the reaction of H2O.

Comparative Analysis on Farmers' Specialized Cooperatives from the Perspective of Agricultural Industry Chain

Taking three typical farmers' specialized cooperatives in Jingyuan County of Gansu Province as example,this paper compared with the operating mode of three cooperatives and their position in the agricultural industry chain,and analyzed operating characteristics,problems,and similarities of three cooperatives and their functions in the agricultural industry chain.The study indicated that the farmers' specialized cooperatives can accurately find their position in the agricultural industry chain.This is helpful for raising their comprehensive competitiveness and it is very important to manage the survival and development of farmers' specialized cooperatives,which is of utmost importance to their effective operation.According to this study,the government should strengthen its support,speed up the cultivation of new-type professional farmers,while farmers' specialized cooperatives should grasp the operating characteristics,locate themselves and integrate multi-resources.These are effective measures for promoting healthy operation of farmers' specialized cooperatives.

Mode Recognition of Lamb Wave Detecting Signals in Metal Plate Using the Hilbert-Huang Transform Method

The dispersion and multiple modes characteristics which exist in the propagation of Lamb waves (LW) in metal plates make it extremely hard to analyze and recognize the detection echo signals of defects. As a newly developed time-frequency analysis method in recent years, Hilbert-Huang transform (HHT) is one of the powerful tools to analyze non-stationary signals. The experimental LW detecting system for single aluminum plate is setup in this work, and the LW detecting signals are analyzed by HHT. The overlapped LW detecting signals of different modes are recognized by the means of extracting flight time of intrinsic mode functions (IMFs) after Hilbert transform (HT). The experiment results, agreeing well with the theoretical analysis, indicate that the HHT method can clearly recognize overlapped LW detecting signals of different modes in metal plates, but could hardly recognize that of the same mode. HHT can be an effective method to recognize LW detecting signals of different modes in metal plates.