Landscape Upgrading and Transformation of Old Urban Parks from the Perspective of Place Attachment:A Case Study of Nanchang Bayi Park

On the basis of combing the relevant theories of place attachment, the planning framework of upgrading and reconstruction of old parks based on place attachment was put forward. Taking Nanchang Bayi Park as an example, the methods and key points of landscape improvement and transformation of old urban parks based on place attachment were explained to provide new ways and references for the renewal of old urban parks.

Research Progress of On-line Monitoring Technology for Electromagnetic Environment of Power Transmission and Transformation Projects

Based on the collection of relevant literature and cases,the research and application status of on-line monitoring technology for electromagnetic environment of power transmission and transformation projects at home and abroad were introduced.Moreover,the problems existing in the on-line monitoring of electromagnetic environment were expounded,and the development prospect was forecasted.

Strategies for Localized Transformation of Landscape in Old Industrial Areas: A Case Study of Xiadian Industrial Area in Xuzhou City

Based on the theory of “localization”, the landscape status of Xiadian industrial area in Xuzhou City was investigated and analyzed. Localized transformation of landscape in the old industrial area can be conducted from the restoration of landscape ecological environment, protection of industrial landscape heritage, and sustainable utilization of industrial waste resources. It can achieve a better balance between urban renewal and the landscape transformation of the old industrial area and then realize the reshaping and regeneration of landscape and promote the development of local industries and the continuation of industrial culture to provide useful thinking for creating geographically representative urban landscape.

Coherent State Projection Operator Representation of Symplectic Transformations as a Loyal Representation of Symplectic Group

We find that the coherent state projection operator representation of symplectic transformation constitutesa loyal group representation of symplectic group. The result of successively applying squeezing operators on numberstate can be easily derived.

Verifiable Secret Sharing Scheme Based on Certain Projective Transformation

The main purpose of verifiable secret sharing scheme is to solve the honesty problem of participants. In this paper, the concept of nonzero k-submatrix and theresidual vector of system of hyperplane intersecting line equations is proposed. Based on certain projective transformations in projective space, a verifiable (t, n)-threshold secret sharing scheme is designed by using the structure of solutions of linear equations and the difficulty of solving discrete logarithm problems. The results show that this scheme can verify the correctness of the subkey provided by each participant before the reconstruction of the master key, and can effectively identify the fraudster. The fraudster can only cheat by guessing and the probability of success is only 1/p. The design of the scheme is exquisite and the calculation complexity is small. Each participant only needs to hold a subkey, which is convenient for management and use. The analysis shows that the scheme in this paper meets the security requirements and rules of secret sharing, and it is a computationally secure and effective scheme with good practical value.

基于Vision Transformer和卷积注入的车辆重识别

针对车辆重识别中提取特征鲁棒性不高的问题,本文提出基于Vision Transformer的车辆重识别方法。首先,利用注意力机制提出目标导向映射模块,并结合辅助信息嵌入模块,抑制由不同视角、相机拍摄及无效背景引入的噪声。其次,以Vision Transformer远距离建模能力为基础提出通道感知模块,通过并行设计模型能够同时获取图像块之间和图像通道之间的特征,在关注图像块之间关联的基础上,进一步构建通道之间的关联。最后,利用卷积神经网络的局部归纳偏置,将全局特征向量输入到卷积注入模块中进行细化,并与全局特征联合优化,以构建鲁棒性的车辆特征。为了验证提出方法的有效性,在Ve⁃Ri776、VehicleID和VeRi-Wild数据集上分别进行了实验验证。实验结果证明,本文的方法取得了良好的效果。

Study on Management System for Agricultural Sci-tech Achievement Transformation Funding Project

Relying on the management system for agricultural sci-tech achievement transformation funding project in Zhejiang Province, on the basis of current situations and demand of agricultural sci-tech achievement transformation funding project management system, we present a B/S-structured and J2EE platform-based system which adopts MVC mode and integrates mainstream open-source frame technologies such as Spring, Struts2, ExtJs, TopLink and FreeMarker, etc. Practice has shown that this system provides an original model for management of sci-tech project application, and various projects can be expanded on this model. With the aid of this system, sci-tech project management personnel can be relieved from trivial manual works, so as to increase working efficiency and improve management level of sci-tech project management.

SELF-DEPENDENT LOCALITY PRESERVING PROJECTION WITH TRANSFORMED SPACE-ORIENTED NEIGHBORHOOD GRAPH

Locality preserving projection （LPP） is a typical and popular dimensionality reduction （DR） method,and it can potentially find discriminative projection directions by preserving the local geometric structure in data. However,LPP is based on the neighborhood graph artificially constructed from the original data,and the performance of LPP relies on how well the nearest neighbor criterion work in the original space. To address this issue,a novel DR algorithm,called the self-dependent LPP （sdLPP） is proposed. And it is based on the fact that the nearest neighbor criterion usually achieves better performance in LPP transformed space than that in the original space. Firstly,LPP is performed based on the typical neighborhood graph; then,a new neighborhood graph is constructed in LPP transformed space and repeats LPP. Furthermore,a new criterion,called the improved Laplacian score,is developed as an empirical reference for the discriminative power and the iterative termination. Finally,the feasibility and the effectiveness of the method are verified by several publicly available UCI and face data sets with promising results.

APPLICATION OF COMPUTER GRAPHICS IN MARTENSITIC TRANSFORMATION

This paper discuss the stereographic method of martensitic transformation (MT)in the view of computer graphics (CG) and programs are programmed to realize this method. Habit plane resulting from the programs agrees with that of numerical analysis in terms of the lattice parameters of austenite and martensite and shear mechanism supposed in Fe-22%Ni-0.8%C alloy, so does orientation relationships.

LAND USE CHANGE AND ITS SOCIO-ECONOMIC DRIVING FORCES UNDER STRESS OF PROJECT IN OLD RESERVOIR AREA——Case Study of Linshui Reservoir Area of Dahonghe Reservoir in Sichuan Province

The old reservoir areas built in 1950s- 1970s left behind many socio-economic problems, because of the administrative backward migration and little migration fund, and all these problems would be tied to land. Based on interviewing with peasant households, combining land use survey and socio-economic statistical index, this paper analyzed land use change and its corresponding driving forces in Linshui reservoir area of Dahonghe Reservoir. Results showed that land use change in the reservoir area was mainly embodied on low-lying land submergence and migration requisition land. The former changed the land use patterns, and the latter mainly reconstructed original land property and made land over-fragmented. Cultivated land per capita was 0.041ha in this area, below the cordon of cultivated land per capita enacted by FAO. Currently, there were still 30.25% of peasant households being short of grain in trimester of one year, and there were 35.27% of people living under the poverty line. The conditions of eco-environmerit in Linshui Reservoir Area were worse, and healthy and sub-healthy eco-environment accounted for less proportion, composed of green belt around the reservoir area and paddy field ecosystem, and economic forest and orchard ecosystem, respectively. The stress of the reservoir project was macroscopic background to analyze the driving factors of land use change, and real underlying diving factor of the land use change in the area was the change of cultural landscape under the stress of reservoir project. The rapid increase of population was the key factor to induce the change of man-land relationship in the reservoir area, the low level of rural economy was the crucial factor to decide how migrants input for production, and the belief of migrants, influencing the land use patterns in a certain extent, was the inducing factor to keep land use stable. The low-lying submergence and infrastructure construction accompanied the reservoir project were leading factors driving land use change in the area, while changes in land use patterns, after the reservoir being built, were the responses of peasant households＇ behaviors to land use change.

Digital Transformation:Reshaping China’s Development Landscape

The Chinese economy is currently undergoing a digital transformation.New growth drivers are replacing old ones,creating a new development landscape.Countries with strong digital industries will be the first to reap the benefits of digitalization.For China,the transformation to a digital economy is both of inevitability and heterogeneity fueled by dual circulations.Crowded out from more skill-based digitalized sectors,less-skilled labor moves to less digitalized sectors.New capital,industries and technology clusters emerge as new drivers of manufacturing and service sector development.With its large domestic market and industrial competitiveness,China has fostered a new development landscape of“dual circulations”.

Focus projection of the parabolic radon transform and multiple waves separator, elimination

Based on the scalar wave equation, making use of the ray approximation of the reflected seismic data (CMP or CSP gathers), the authors derive respectively the projection function of the primary waves and multiple waves at the near offset (CMP or CSP gathers) in the parabolic Radon transform(PRT)domain. From the geometric point, the authors prove that the energy of the reflection still distributes along hyperbola which has higher curvature in the PRT domain and becomes some energy masses. So the primary waves and the multiple waves which interweave each other in ( x, t ) domain can be completely separated, which helps the multiple waves eliminated by filtering or muting. It is important for the analysis of velocity and the separator and elimination of multiple waves.

设施蔬菜产业发展(五) 我国老旧蔬菜设施现状、问题及改造提升对策建议

目前我国正在加快建设现代设施农业,推进老旧蔬菜设施改造升级,促进设施蔬菜产业的高质量发展。但是对老旧设施的现状和存在问题缺乏系统梳理,对如何破解改造工作面临的困难和提升改造对策缺乏系统研究。通过调研我国主要设施蔬菜产区,总结老旧设施现状及存在的主要问题,分析推进改造提升的主要制约因素,并提出明确工作重点、优化设施结构、完善工作机制、增强条件保障等方面的对策建议。

基于逆投影变换的纱筒纱线余量检测算法

纱筒纱线余量检测是纺织行业自动化生产过程中的重要一环,针对目前纱线余量检测算法检测精度低的问题,提出一种基于三点逆投影变换模型的纱筒纱线余量检测技术。根据实际生产过程中相机与纱筒的位置关系,建立三点逆投影变换模型进行初步矫正。为得到更好的图像矫正结果,设置补偿矩阵并根据内外筒位置信息优化变换矩阵,最后将逆投影变换后的图像按照改进的椭圆坐标变换模型展开为矩形,根据余量计算准则计算得到纱筒纱线余量。在自主搭建的检测平台上进行实验,结果表明,本文算法检测精度在5 mm以内,基本满足实际生产要求,可为纺织产业自动化生产提供依据。

三级公立医院绩效考核背景下科技创新能力提升策略实践探索

科技创新是公立医院高质量发展的重要抓手。当前,医院青年人才科研起步难、交叉研究落地难、研究成果转化难等问题,制约了医院科技创新能力的提升。浙江大学医学院附属儿童医院积极响应医改政策,以问题为导向,探索并实践科技创新能力提升策略,从科研绩效评价制度改革、临床青年科技创新人才培养、科技创新平台建设、科技成果转化机制完善等方面,全方位推进医院科技创新体制机制建设,推动科技创新能力整体提升,取得了初步成效。有关实践经验可以为三级公立医院可持续高质量发展提供参考。

基于经济增长视角的山东省新旧动能转换效果评估

坚定不移推动新旧动能转换,是当前山东省推动经济高质量发展的重要任务。基于2008-2021年我国30个省级行政区的面板数据,将除山东省以外的其他省(区、市)作为潜在控制组,从经济增长的视角,采用合成控制法,对山东省新旧动能转换重大工程的实施效果进行评估。结果表明,从整体上来说,新旧动能转换重大工程的实施对山东省经济增长具有显著的促进作用,但这种作用的显现具有时间滞后性,并且不同因素对山东省新旧动能转换重大工程的影响具有差异性。因此,要深刻认识和把握新旧动能转换的演进过程,大力推动供需两侧新动能培育和成长等。

含不同角度和长度裂纹损伤钢构件的试验及剩余极限强度有限元分析

为研究含裂纹损伤钢构件的剩余极限强度,分别对Q235和Q355两种含不同角度和长度的裂纹损伤钢构件展开试验,并建立了有限元模型。通过对有限元数值模拟结果进行非线性拟合,得到了裂纹角度为90°(裂纹与受力方向垂直)的含裂纹损伤钢构件剩余极限强度的计算公式。进而通过投影等效转换的方法推导出了含任意角度裂纹损伤钢构件剩余极限强度的统一计算公式,并通过对比分析验证了本文所提方法的准确性。结果表明,在裂纹角度一定的情况下,随着相对裂纹长度的增加,剩余极限强度减小;而在相对裂纹长度一定的情况下,随着裂纹角度的增加,剩余极限强度减小。经验证,本文提出的剩余极限强度的统一计算公式的计算结果与实际试验数据的误差保持在4%以内。

基于黎曼球面投影变换的船舶会遇风险感知建模

文中提出一种基于黎曼球面投影变换的船舶会遇风险感知模型,将船舶相对运动轨迹投影为黎曼球面上的相对曲线运动,利用黎曼球上船舶的相对速度与相对距离构建会遇风险模型.基于三种会遇局面和实际事故案例进行仿真,并基于案例与传统模糊综合评价模型作对比分析模型可靠性.结果表明:所提模型能有效地评估船舶会遇风险,实时可视化输出更为直观,便于辅助船舶避碰决策.