Rural Development Transformation and Social Governance from the Perspective of Specialization:A Case Study of Ruiling Village in Guangzhou City,China

The reorganization of the global production network and the increased mobility of urban-rural elements have accelerated the differentiation of rural spaces,resulting in a trend towards specialization in rural areas.This paper focuses on the concept of specialization,and takes a renowned bonsai specialized village in Guangzhou City,China as a typical case to explore its transformation and development process,action logic and coupling mechanism with the social governance.The results show that:1)the development of rural specialization in Ruiling Village is shaped by several key actors,such as local governments,grassroots organizations,villagers,social organizations,policies,markets and infrastructure.The transfer of these key actors and the reconstruction of actor-networks in different stages have an important influence on the transformation and realization of rural development goals.2)Through subjects-driven,organization management and resource connection,social governance supports the specialization of rural industrial organization,operation,technology and mode.The governance structure shifts from decentralization to networking,refinement and integration.A coupling community of social governance and specialization is created by the social governance system of‘local government-grassroots organizationseconomic cooperatives-villagers’,which links industries,industrial chains and cooperatives.3)Social governance integrates into the value chain extension process of rural specialized development with a central,multi-level organizational structure.It promotes the construction of the whole value chain through organizational planning,resource integration and image shaping,thus realizing the value,branding and organization of the industry,as well as the integration of rural sustainable development and governance mechanism.Social governance has a profound impact on the development of rural specialization in terms of subject,structure and mode,and participates in the construction of the whole value chain of rural areas.This paper provides a new perspective for understanding the coupling effect of social governance in the rural development transformation,and promotes the rural sustainable development and governance.

Measurement Method of Graviton Velocity and Thought on Correcting Lorentz Transformation——The Superluminal Neutrino’s Influence on Special Relativity and Other Physical Theories

After discovery of the superluminal particle and consideration on development of contemporary physical theory research, also on the existing errors and omissions, the principle of constant light speed is found not a necessary condition in derivation of Lorentz Transformation;instead, this thesis proposes the velocity of graviton may feature superluminal, constant velocity in different directions, and independence of inertial reference frame speeds. This is an optional thought of correction. According serial hypothesis, an equation of graviton’s motion trace, i.e., the central curve of nebula density, is established for spiral galaxy. Thus we gain the method to measure velocity of graviton. If to totally avoid problem of limit speed, we have to search for independent of inertia frames, and relevant to space-time properties. Regarding current difficulties of singular points in the Theory of Limited Universe, this thesis points out that the document [1] is the best solution to these difficulties.

Preface for the Special Column of Methane Transformation

Methane is the main constituent of natural gas, coal-bed gas, landfill gas and methane hydrate resources. These resources may be used more efficiently as clean fuels or as chemical feedstocks if methane can be effectively transformed into liquid fuels or chemicals. However, methane only possesses C-H bonds and is a very stable organic molecule hard to functionalize. The C-H activation, particularly the selective functionalization of C-H bonds in saturated hydrocarbons, remains a difficult challenge in chemistry. The present technology for chemical utilization of methane involves the steam reforming of methane to synthesis gas and the subsequent transformation of synthesis gas to methanol or hydrocarbon fuels via methanol synthesis or Fischer-Tropsch synthesis. However, the steam reforming of methane is a high-cost process. The development of more efficient and economical processes for methane transformation is a dream of all chemists and chemical engineers. I think that this is also one of the most important themes of the Journal of Natural Gas Chemistry.

Strategic Transformation of Special Libraries

<正>Under the shocks of digitalization and networking,National Science Library of the Chinese Academy of Sciences(NSLC)has executed the transformation strategy for knowledge-based services,and fully pushed forward the literature information services of NSLC.Supervised by the Chinese Academy of Sciences(CAS),NSLC has established the Literature and Information Branch of Chinese Alliance of

Supercompiler Scp4:Use of Quasi-Distributive Laws in Program Transformation

The author constructed a transformer Scp4 of functional programs. The transformer uses the technology known as Turchin's supercompilation. Scp4 was implemented in a functional language Refal 5. The input language for Scp4 is also Refal 5. In the present paper we give an outline of the supercompiler and consider a number of tools of the transformer in details. The tools can be formally thought of as quasi distributive laws.

Coordinate Transformation and Exact Solutions of Schrodinger Equation with Position-Dependent Effective Mass

Using the coordinate transformation method, we solve the one-dimensional Schrodinger equation with position-dependent mass. The explicit expressions for the potentials, energy eigenvalues, and eigenfunctions of the systems are given. The eigenfunctions can be expressed in terms of the Jacobi, Hermite, and generalized Laguerre polynomials. All potentials for these solvable systems have an extra term Vm, which is produced from the dependence of mass on the position, compared with those for the systems of constant mass. The properties of Vm for several mass functions are discussed.

Research on the Differential Protection Algorithm of Multi-Tap Special Transformer

Compared with conventional transformers, the rectiformer is special in connection mode, which is multi-tap and not equipped with the differential protection. In this paper, the differential protection algorithm for Multi-tap special transformer was derived. The regulating methods for the rectiformer were studied first, and then the rectiformer model of one electrolytic aluminium plant was built by PSCAD/EMTDC, characteristics of the rectiformer bank were also analyzed. The algorithm was derived on the basis of the per-unit system, and the processing methods of the regulating transformer’s tap position information were proposed. Finally, a contrast of differential protection algorithm between the multi-tap special transformer and the conventional transformer was made.

Strong/weak limits and strong/weak differentials of multi-variable indeterminate forms. III: Transformations

Various transforms of the indeterminate forms are presented in this part, which include simplification in spherical coordinates, origin translation, axis alteration, transformation of limit conservation and application of Xh?K0. Fundamental factors for numerical simplification are provided respectively for bi-variable indeterminate forms, tri-variable indeterminate forms and the universal extending multiplier.

Classical Derivation of Auxiliary Lorentz Transforms: Their Relations with Special Relativity

In this paper we have given a direct deduction of the auxiliary Lorentz transforms from the consideration of Maxwell. In the Maxwell’s theory, if c is considered to be the speed of light in ether space, his equations should be affected on the surface of the moving earth. But curiously, all electromagnetic phenomena as measured on the surface of the moving earth are independent of the movement of this planet. To dissolve this problem, Einstein (1905) assumes that Maxwell’s equations are invariant to all measurers in steady motion which acts as the foundation of Special Relativity. This assumption of Einstein is possible when all four auxiliary Lorentz transforms are real. There is not a single proof that could properly justify Einstein’s assumption. On the contrary it is now known that classical electrodynamics could easily explain all relativistic phenomena rationally.

A TRANSFORMATION PATH ALGORITHM FOR UNCONSTRAINED SIGNOMIAL GEOMETRIC PROGRAMMING

In this paper we present a transformation path algorithm for Unconstrained Signomial Geometric Programming (USGP). The algorithm is proposed from a new point of view based on exploring the characteristics of USGP problem. Firstly by some stable transformations, a particular subproblem is derived which is very easy to solve.Secondly, a special path is formed conveniently. And then the step of the algorithm consists in finding a "good" point to the current iterate by choosing it along the special path and within a trust region. It is proved that the algorithm is globally convergent.

Lorentz Transformation Derived from Relativity of Time

The principles of special relativity and Einstein’s simple derivation of the Lorentz transformation are reviewed. A new simple derivation of the Lorentz transformation is developed in this paper, by a new approach of light-pulse observation or time-dilation observation. Therefore, under the two principles of special relativity, there exist two equivalent simple derivations of or two equivalent approaches to the Lorentz transformation. Einstein’s approach emphasizes or highlights relativity of space while our approach emphasizes or highlights relativity of time. This research reveals, in a particular way, the equivalence of relativity of space and relativity of time in special relativity. Combination of Einstein’s approach and the approach developed in this paper makes the methodology of simple derivation of the Lorentz transformation complete and perfect.

On the Existence of a Minimum Universal Speed of Physical Transmissions Associated with Matter Wave in Special Relativity

In this work, we show that it is possible to establish coordinate transformations between inertial reference frames in the theory of special relativity with a minimum universal speed of physical transmissions. The established coordinate transformations, referred to as modified Lorentz transformations because they have almost identical form to the Lorentz transformations, also comply with the requirement of invariance of the Minkowski line element. Particularly, the minimum universal speed can be associated with the phase speed of de Broglie matter wave. As application, we also discuss the possibility to formulate relativistic classical and quantum mechanics for the special relativity associated with the modified Lorentz transformations, which describes physical processes that represent an expansion or a collapsing of massive quantum particles.

数字科技何以驱动新质生产力发展——以专精特新企业为实现主体

习近平总书记强调要立足实际,充分释放新质生产力的巨大潜能。新质生产力以创新、质优和先进性为鲜明特征,成为中国经济高质量发展的核心引擎。以驱动新质生产力发展为目标诉求,以“革命性技术突破、生产要素创新性配置、产业深度转型升级”三大核心要素为中间承载,以专精特新企业为实现主体,以数字科技为支撑赋能,建构“新质生产力—三大核心要素—专精特新—科技赋能”逻辑关系。首先,从宏观层面解构新质生产力的形成机制,指出革命性技术突破、生产要素创新性配置和产业深度转型升级是催生新质生产力的三大核心要素。其次,聚焦专精特新企业的“专业化、精细化、特色化、新颖化”特点,阐释三大核心要素引领、推动、实现专精特新企业专注深挖、精益求精、别具一格和引领创新指标的承载作用。最后,基于数字科技的持续性创新、数字经济、核心竞争力和数字人才培育维度,揭示出专精特新企业通过数字科技赋能,能够更精准地把握市场需求,更高效地推动技术创新,更灵活地配置资源,是形成新质生产力的有效途径。

狭义相对论时空观的图像解译

狭义相对论的时空观之所以抽象且难以理解,一方面是因为狭义相对论所涉及的时空效应,如同时性的相对性、长度收缩和时间延缓等,在实际中都很难被观测到;另一方面是因为我们很难将这些时空效应同时直观形象地描述出来,并且给出不同参考系各自观测到的时空效应之间的对应关系。本文针对这一问题,利用图示法将两个参考系在不同时刻观测到的时空图像表示出来,并结合具体数值对他们间的对应关系进行讨论。在图示法中同时考虑了同时性的相对性、长度收缩和时间延缓这三个狭义相对论重要的时空效应,这样可直观形象地看到在一个参考系中得到的观测结果会被另一个参考系所认同,正是这些彼此认同的观测结果构成了狭义相对论的时空观。通过对不同参考系中观察到的时空图像及其相互联系的讨论,可以加深学生对狭义相对论时空效应及洛伦兹变换的物理意义的理解。

新加坡特殊经济区域创新实践及对中国科技成果转移转化示范区建设的启示

新加坡特殊经济区域通过政府主导、市场运作、产学研协同的模式,为新兴产业发展提供了良好的环境和动力。借助“制度-结构-行为-绩效”(Institution-Structure-Conduct-Performance,ISCP)范式从政府前期开发和市场机构后续运营的制度机制层面,创新主体、设施和环境引导建设的结构导向层面,资金投入、人力资源引培、土地梯次开发弹性利用和打造创新社区的行为措施层面,以及区域新兴产业发展壮大的绩效层面,对新加坡特殊经济区域创新实践进行了研究。以此框架分析了中国科技成果转移转化示范区存在的问题,得出围绕产业发展,引入空间再造和激活创新要素角度,涉及创新的制度和机制、主体和结构、环境和人才等方面的启示。

论普惠发展要求下特殊教育学校发展转型与职能升级

特殊教育学校对发展我国特殊儿童教育具有重要作用。强化特殊教育普惠发展是特殊教育的发展要求和方向,客观上要求特殊教育学校做好发展转型和职能提升。特殊教育学校发展转型应积极应对教育对象变化、不断更新教育理念、努力延伸服务学段等;提升特殊教育学校职能应将学校服务场域从学校内部拓展至所属社区、教师角色从学校教育者转换为区域融合教育指导者、关注重点从学校教学走向提供多方面指导和支持服务。另外,特殊教育学校仍需加强师资队伍建设、健全特殊教育管理体制,为特殊教育学校发展转型和职能升级赋权,建立社会支持体系,提高特殊教育的社会认同感。

董监高履职风险缓释与企业“专精特新”转型——基于董监高责任险的经验证据

党的二十大明确将培育“专精特新”企业作为建设现代化产业体系的重要内容。然而,企业“专精特新”转型存在极大的不确定性,如何增加激励驱动转型成为培育“专精特新”企业的重要考量。本文从董监高履职风险缓释的视角探究了董监高责任险对企业“专精特新”转型的影响。研究发现,企业购买董监高责任险后的风险缓释能够促进企业“专精特新”转型。异质性分析表明,这一效应在小规模企业和高竞争性行业中更显著。本文有助于加深对我国董监高责任险制度运行成效的认识,并可从企业内部治理的角度为培育“专精特新”企业提供相关建议。

数字基础设施建设对企业劳动雇佣的影响与机制——以“宽带中国”战略为准自然实验

在产业结构转型升级与经济下行压力加大叠加影响下,就业问题日益凸显。随着数字经济与实体经济深入融合,加强数字基础设施建设成为推动经济高质量发展、破解就业难题的重要途径。基于2007—2022年我国A股上市公司数据,以“宽带中国”战略作为数字基础设施建设的准自然实验,利用多期双重差分模型,实证分析数字基础设施建设对企业劳动雇佣的影响。研究发现,数字基础设施建设能够显著促进企业劳动雇佣的增加。数字基础设施建设对企业劳动雇佣的促进作用因企业所处生命周期阶段、行业、地区不同而存在差异:相比于衰退期企业,其对成长期和成熟期企业劳动雇佣的促进作用更强;相比于服务业企业,其对制造业企业劳动雇佣的促进作用更强;相比于东部、西部、东北地区企业,其对中部地区企业劳动雇佣的促进作用更强。数字基础设施建设通过扩大企业生产规模、提高企业专业化分工水平、加快企业数字化转型三个机制增加企业劳动雇佣。数字基础设施建设能为不同受教育水平和就业岗位的劳动力创造广阔就业空间,但相比于低学历劳动力,其对高学历劳动力的就业创造效应更显著;相比于财务岗位、销售岗位、其他岗位特别是生产岗位,其对与数字技术密切相关的技术岗位的就业创造效应更显著。因此,要加强数字基础设施建设,增强就业创造效应。加大人才培养力度,提升劳动力技能水平。因地制宜制定发展政策,推动地区就业规模稳定增加。

专科医院科技成果转化工作存在的问题及策略

推进医院科技成果转化工作能够显著提升医院新质生产力水平以及我国生物医药领域产业创新能力。专科医院因其体量规模小、学科布局单一等原因,存在学科交叉合作不足、资金投入及吸纳资金能力不足、医院人员成果转化意识及动力不足、成果转化经验不足、成果难以产业化等问题。专科医院通过加强产学研医融合、加大资金投入、加强成果转化理论培训、组建转化人才队伍、探索多路径成果转化模式等策略,可以切实提高专科医院科技成果转化成效。

基于计算机视觉的圆锯片图像特征提取

针对圆锯片图像特征,将图像的预处理、轮廓提取、轮廓优化、锯片圆心的检测及内外圆直径、圆度误差的测量、齿尖及齿尖两段直线的检测、齿尖角的测量、径向前角及径向后角的测量算法集成。根据所研究的圆锯片图像齿尖特征,改进了直线的Hough变换,即首先将各个齿尖位置跟齿尖周围共线的像素点检测到,然后再用Hough变换逐次检测齿尖周围的两段直线。针对圆的常规Hough变换检测时间长的问题,改进了圆的Hough变换,即首先将圆上边缘像素点总数三等分,然后从每一部分边缘点各取一个像素点,利用不共线的三个像素点确定圆心。这样在保证精度的前提下,大大缩短了检测时间,为零件的在线检测奠定了基础。