Small Optical Product Breeds Large Industry

China is the world’s largest consumer market for eyeglasses,with the total market volume reaching 80billion yuan.Accordingly,the market has a group of 800 million consumers demanding eyeglasses.The consumers are from different ages。

Research status and application of artificial intelligence large models in the oil and gas industry

This article elucidates the concept of large model technology,summarizes the research status of large model technology both domestically and internationally,provides an overview of the application status of large models in vertical industries,outlines the challenges and issues confronted in applying large models in the oil and gas sector,and offers prospects for the application of large models in the oil and gas industry.The existing large models can be briefly divided into three categories:large language models,visual large models,and multimodal large models.The application of large models in the oil and gas industry is still in its infancy.Based on open-source large language models,some oil and gas enterprises have released large language model products using methods like fine-tuning and retrieval augmented generation.Scholars have attempted to develop scenario-specific models for oil and gas operations by using visual/multimodal foundation models.A few researchers have constructed pre-trained foundation models for seismic data processing and interpretation,as well as core analysis.The application of large models in the oil and gas industry faces challenges such as current data quantity and quality being difficult to support the training of large models,high research and development costs,and poor algorithm autonomy and control.The application of large models should be guided by the needs of oil and gas business,taking the application of large models as an opportunity to improve data lifecycle management,enhance data governance capabilities,promote the construction of computing power,strengthen the construction of“artificial intelligence+energy”composite teams,and boost the autonomy and control of large model technology.

Relying on Secondary Industry to Drive National Policy and Reinvigorate China＇s Economy

China is a large, developing economy now entering the second half of the intermediate stage of industrialization. It is inadequate for China at this time to perceive industrial development as a part of its industrial strategy. Rather, industrial development should be discussed and developed using a wider lens, as part of state strategy and responding to national conditions. This paper argues that, for China to progress further, it must transition from being simply a large industrial country to being a true industrial power. The paper presents characteristics and indicators that describe the world＇s industrial powers. China should focus strategically on development via invigorating industry - this idea and its related objectives, key tasks, and policy directions make up the Industry-Invigorating-China Strategy. The author prediets that China will develop the basic qualities of an industrial power by 2020, and it will achieve full industrial power status by 2040.

On Numerical Modelling of Industrial Powder Compaction Processes for Large Deformation of Endochronic Plasticity at Finite Strains

Compaction processes are one the most important par ts of powder forming technology. The main applications are focused on pieces for a utomotive, aeronautic, electric and electronic industries. The main goals of the compaction processes are to obtain a compact with the geometrical requirements, without cracks, and with a uniform distribution of density. Design of such proc esses consist, essentially, in determine the sequence and relative displacements of die and punches in order to achieve such goals. A.B. Khoei presented a gener al framework for the finite element simulation of powder forming processes based on the following aspects; a large displacement formulation, centred on a total and updated Lagrangian formulation; an adaptive finite element strategy based on error estimates and automatic remeshing techniques; a cap model based on a hard ening rule in modelling of the highly non-linear behaviour of material; and the use of an efficient contact algorithm in the context of an interface element fo rmulation. In these references, the non-linear behaviour of powder was adequately desc ribed by the cap plasticity model. However, it suffers from a serious deficiency when the stress-point reaches a yield surface. In the flow theory of plasticit y, the transition from an elastic state to an elasto-plastic state appears more or less abruptly. For powder material it is very difficult to define the locati on of yield surface, because there is no distinct transition from elastic to ela stic-plastic behaviour. Results of experimental test on some hard met al powder show that the plastic effects were begun immediately upon loading. In such mater ials the domain of the yield surface would collapse to a point, so making the di rection of plastic increment indeterminate, because all directions are normal to a point. Thus, the classical plasticity theory cannot deal with such materials and an advanced constitutive theory is necessary. In the present paper, the constitutive equations of powder materials will be discussed via an endochronic theory of plasticity. This theory provides a unifi ed point of view to describe the elastic-plastic behaviour of material since it places no requirement for a yield surface and a ’loading function’ to disting uish between loading an unloading. Endochronic theory of plasticity has been app lied to a number of metallic materials, concrete and sand, but to the knowledge of authors, no numerical scheme of the model has been applied to powder material . In the present paper, a new approach is developed based on an endochronic rate independent, density-dependent plasticity model for describing the isothermal deformation behavior of metal powder at low homologous temperature. Although the concept of yield surface has not been explicitly assumed in endochronic theory, it is shown that the cone-cap plasticity yield surface (Fig.1), which is the m ost commonly used plasticity models for describing the behavior of powder materi al can be easily derived as a special case of the proposed endochronic theory. Fig.1 Trace of cone-cap yield function on the meridian pl ane for different relative density As large deformation is observed in powder compaction process, a hypoelastic-pl astic formulation is developed in the context of finite deformation plasticity. Constitutive equations are stated in unrotated frame of reference that greatly s implifies endochronic constitutive relation in finite plasticity. Constitutive e quations of the endochronic theory and their numerical integration are establish ed and procedures for determining material parameters of the model are demonstra ted. Finally, the numerical schemes are examined for efficiency in the model ling of a tip shaped component, as shown in Fig.2. Fig.2 A shaped tip component. a) Geometry, boundary conditio n and finite element mesh; b) density distribution at final stage of

A Review and Outlook of the Centennial of China’s Industrialization:The CPC’s Industrialization Strategy

Industrialization has been a dream for the Chinese nation since modern history and a goal of the Communist Party of China(CPC).Ever since its founding in 1921,the CPC has been exploring a path for China’s industrial development based on socialism as the political and institutional premise.Since the founding of the People’s Republic of China in 1949,the Chinese people have established a socialist system under the CPC’s leadership and carried out industrial development for over seven decades in the world’s most populous country,blazing a new trail of socialist industrialization with Chinese characteristics.Under the CPC’s leadership,China established an independent and complete industrial system in less than three decades from 1949 to 1978,and developed into the world’s largest industrial power with the most complete industrial sectors in over three decades from 1979 to 2016.In its future industrial development,China aims to complete new-type industrialization by 2035,build a modern economic system,reach the level of moderately developed countries in terms of GDP per capita,and develop into a major world industrial power by the centennial of the founding of the People’s Republic of China in 2049.

The Centenary of the CPC:Socialist Industrial Development and Historical Experience

Socialist industrialization in a populous agrarian country like China is a complex,arduous,and long-term task.Under the leadership of the Communist Party of China(CPC),the Chinese people have initiated a new way of socialist industrialization suitable to China’s national conditions after assiduous efforts.Brilliant achievements of historic importance have been made in China’s industrial development.In just a few decades,China completed an industrialization process that took centuries in the developed world and established the world’s most complete modern industrial system,becoming the second-largest economy and the largest manufacturing nation in the world.This achievement is of great historic and worldwide significance.Over its centennial history,CPC has completed the historic task of opposing imperialism and feudalism during the New Democratic Revolution,which created political conditions essential for the nation’s socialist industrialization.During this socialist revolution and development,the CPC has led the nation to build complete industrial and economic systems.In the era of reform and opening up and socialist modernization,the CPC has led the nation to industrialize and become the equal of more advanced economies.In the new era of Chinese socialism,the CPC has led the nation to accomplish the goal of building a moderately prosperous society in all respects and pursuing high-quality industrial development.China’s industrial achievements can be attributed to the following factors:First,the CPC’s strong leadership,adherence to its founding aspiration and unwavering commitment to socialist industrialization;second,the application of the Marxist principles taking into account China’s actual conditions;third,proactively exploring and following the laws of industrialization for China as a large country and keeping industrial development in alignment with evolving conditions.

Influence of industrial organizational structure on farming performance of large yellow croaker farmers

This paper determines the cost-benefit levels of yellow croaker farming households by comparing and analysing responses to questionnaires distributed to 405 households located in nine breeding regions of three counties(cities)in the Chinese provinces of Fujian and Zhejiang.A transcendental logarithmic stochastic frontier production function model is used to perform a quantitative analysis on the large yellow croaker production technique efficiency of different forms of industry organisation,with the farming household as the basic production unit.The findings indicate that the average production technology efficiency of the farming households is 84.33% and room for improvement remains;and there are significant differences between the production technique efficiency of farming households from different regions and under different forms of organisation.An analysis of the factors that affect farming household production technique efficiency found that capital input has a greater effect than labour input.Family participation and the number of individuals involved in the rearing of large yellow croakers,participation in technical training,and joining a closely-knit industry organisation all have a significant positive effect on increasing the production technique efficiency.These empirical results provide a basis and practical reference for optimising the development of the large yellow croaker farming industry,enhancing the degree of closeness of the organisations in the industry,and improving aquaculture performance.