High Temperature-preventing Cultivation Technology of Single-season Middle Rice for High Yield and High Quality in Jianghuai Area

In recent years,with the global climate change,the frequency and duration of high temperature in summer and autumn have increased,causing high temperature heat damage to summer crops such as rice and maize.From the end of July to early August is the main period of high temperature occurrence,during which the daily average temperature above 30℃is a high probability event,and even the highest temperature is above 38℃,while this period coincides with the booting-blooming-filling stage of the single-season middle rice in Jianghuai,especially the middle-season indica rice,so it often leads to the degradation of rice spikelets,pollen abortion,difficulty in pollen dispersion,and even difficulty in heading,resulting in a serious decline in the seed setting rate and poor filling of grains,which finally affect the yield and quality.Based on the goal of high-yielding high-quality rice cultivation,this paper proposed targeted technical measures for single-season middle rice from the aspects of planting time sequence optimization,selection of high-temperature-resistant varieties,population construction,fertilizer and water management technology,and how to compensate for the occurrence of unexpected disasters to promote plant growth.This study provides technical support for high-yielding high-quality stress-resistant and disaster-reducing rice cultivation technology.

Research on the Teaching Design of Learning Situations in Information Technology Course in Middle Schools

The research on Information Technology in middle schools is a very important course.The arrangement and explanation of the course and the application of some teaching methods to promote the research of Information Technology are an integral part of education.Based on this,this article mainly explains the meaning and importance of learning situations,and how to create learning situations in the teaching of Information Technology in middle schools for related staff.

Progress and prospect of mid-deep geothermal reinjection technology

Mid-deep geothermal reinjection technology is crucial for the sustainable development of geothermal resources,which has garnered significant attention and rapid growth in recent years.Currently,various geothermal reinjection technologies lag behind,lacking effective integration to address issues like low reinjection rates and thermal breakthrough.This paper reviews the basic principles and development history of mid-deep geothermal reinjection technology,focusing on various technical methods used in the process and analyzing their applicability,advantages,and disadvantages under different geological conditions.It highlights the unique challenges posed by deep geothermal resources,including high temperature,high pressure,high stress,chemical corrosion,and complex geological structures.Additionally,it addresses challenges in equipment selection and durability,system stability and operation safety,environmental impact,and sustainable development.Finally,the paper explores future directions for mid-deep geothermal reinjection technology,highlighting key areas for further research and potential pathways for technological innovation.This comprehensive analysis aims to accelerate the advancement of geothermal reinjection technology,offering essential guidance for the efficient reinjection and sustainable development of geothermal resources.

‘Middle-Income Trap’ and ‘High-Income Waft＇： Challenges and Opportunities to China

The history of international industrialization shows that Latin American countries and former Soviet Union and Eastern European countries experienced a siginificant drop in economic growth and fell into the middle-income trap when their per capita GDP reached 4,000-7,000 international dollar （based on the 1990 prices） as a result of long-term implemented import-oriented strategy and planned economic system. Fortunately, China adopted reform and opening-up policy beginning at a lower development phase and achieved sustained high-speed growth for more than thirty years. Currently, China has surpassed the phase which the above-mentioned countries fell into the middle-income trap. On the other side, experiences of successful runner-ups show that when per capita GDP reached II,000 international dollar （based on the 1990 prices）, economic growth speed will present regularly ＂natural drop ＂. Without internal and external shocks, China＇s economy is expected to reach this level by 2015 and the potential growth rate will possibly drop significantly. In this regard, China＇s toughest challenges will be whether it can effectively prevent and solve the financial risks accumulated during high-speed growth and make a shift to innovation-driven growth model Time is pressing for addressing the above challenges. A fundamental change in the growth model depends on the intensification of reform, in particular, the promotion of an ＂participatory and facilitative reform ＂approach.

Comparative Analysis on Transition Trap and Middle Income Trap in Current ＇ Economic Development

China now is in the vital stage of the economic transition,which is facing the severe challenge of spanning the middle- income trap.Only the clear recognization of current domestic and overseas situations,the vigorous implementation of self- dependent innovation,and the energetic exploitation of international market will contribute to the fundamental industrial restructuring and the early achievement of marching into high- income countries.

The ＂Middle Income Trap＂ in Economic Growth in Different Economies

Nowadays, more than 50% of the world population live in middle-income economies. Economies in the middle-income development stage are confronted with a number of challenges, such as economic restructuring, industrial upgrade and income growth. Therefore, academia around the worm have paid much attention to theoretical and empirical researches of the ＂middle income trap＂ and long-term trends of global economic growth. Based on analyses about the long-term growth path of the world economy and the characteristics of different stages of economic development, this paper defines the＂middle income trap＂ and its characteristics and examines, through a large number of cases from different economies, the reasons why ＂growth slowdown＂ arises during the middle-income development stage. These theoretic and empirical researches have reference value and heuristic meaning for China to actively respond to the challenges of the ＂middle income trap＂.

Causes for Middle Income Trap and Recommendations for China's Leaping Paths

The middle income trap is an objective challenge faced in the development of the economy. There is provision in both the amount and time. It is worth studying why some Latin American countries have fallen into this trap for decades. This paper analyzed the causes for the middle income trap of Latin American economies. On this basis,it came up with recommendations for China's leaping paths,including accelerating the structural reforms on the supply front to promote industrial transformation and upgrading,deepening the reform and increasing the efficiency with institutional innovation as the core,protecting legitimate property rights,reforming the income distribution,combining accurate poverty alleviation,narrowing the gap between the rich and the poor,performing administration according to laws,vigorously developing education,expanding the opening up,and keeping sustainable growth,so as to successfully leap over the middle income trap.

零售业“Big Middle”形成机理的经济学分析

每一次零售业态变革基本上都与技术、偏好或行为有关:科学技术在零售领域的应用提高了零售服务水平并且降低了零售服务的成本,不同偏好的消费者选择使得不同零售业态的生存获得相应的市场空间,零售商的进入与退出行为的选择导致了特定市场空间中主导零售业态的形成。本文通过对零售业"Big Middle"的形成机理进行经济学分析,并且依据中国零售业态发展的实践进行了相应的实证检验,从而为信息化和网络化条件下零售业的发展提供一定的理论指导。

“Big Middle”理论及其在中国的应用研究

本文通过介绍"Big Middle"的概念及其理论内涵,分析了国外"Big Middle"的演化,进而指出国外"Big Middle"主导零售商成功的原因可为我国零售业的发展提供借鉴。最后将国外比较新的"Big Middle"理论用于分析中国零售业态的演化,并判断中国是否存在"Big Middle"类零售商。

Cloud Computing Perceived Importance in the Middle Eastern Firms: The Cases of Jordan, Saudi Arabia and United Arab Emirates from the Operational Level

Firms need cloud computing adoption for strategic and competitive goals, generating business value, and at last gaining competitive advantage. This study reviews the literature regarding cloud computing and IT governance, and presents a research model along with its hypotheses formulation to examine the factors impacting cloud computing perceived importance in several Arab firms, specifically Jordan, Saudi Arabia and United Arab Emirates by using the integration of Technology Acceptance Model (TAM) model and Technology-Organizational-Environmental (TOE) framework as adapted from [1]. 329 returned surveys from top, middle-level IT managers, and IT employees from the operational level of the studied firms were analyzed using the structural equation modeling technique. The study found relative advantage, compatibility, complexity, organizational readiness, top management commitment, and training and education as important variables for impacting cloud computing adoption using perceived ease of use and perceived usefulness as mediating variables. The model explained 61%, 63%, and 74% of cloud computing adoption for perceived usefulness, perceived ease of use and perceived importance respectively.

基于TRAP的长穗偃麦草SCAR标记的开发及应用

为了开发长穗偃麦草的特异标记,依据TRAP技术,利用56对固定引物与随机引物的组合对中国春-长穗偃麦草附加系等材料进行PCR扩增,共筛选出160条分布于长穗偃麦草1E-7E染色体的特异扩增片段。通过对104个片段的序列进行同源比对,选择与小麦无同源序列的区段设计138对引物,分别对中国春、长穗偃麦草、中国春-长穗偃麦草附加系进行PCR扩增,最终获得30个长穗偃麦草特异SCAR标记,发展标记的效率为53.6%。利用这些特异SCAR标记对硬粒小麦(AABB)与异源六倍体小麦(AABBEE)杂交产生的F2中38个单株进行扩增鉴定,9个单株仅附加了1条相同的E染色体,其余为多条E染色体或者无E染色体附加。这些SCAR标记在不同材料和世代表现出优越的特异性和稳定性,可用于检测小麦背景中附加的相关长穗偃麦草染色体。

Are the Green TBTs a Stimulus or a Trap for Enterprises’Green Technology Development?

Green trade barriers are often seen as a catalyst that promotes exporting countries to develop green technologies.However,by distinguishing the green technology behavior of enterprises into green technology transformation and green technology innovation,this paper finds that although green trade barriers can encourage enterprises in exporting countries to increase investment in green technology transformation in order to obtain rapid market access,they crowd out the resources of green technology innovation of enterprises.In other words,green trade barriers will strengthen enterprises’dependence on the introduction of green technologies,weaken their innovation capabilities,and increase the risk of being locked in the middle of the global industrial chain,creating a trap effect.Using the data of enterprises in the heavily polluting industry of A-shares from 2009 to 2021,this paper confirms the existence of the trap effect.In addition,this paper finds that due to the infl uence of short-sightedness of managers,alleviating corporate financing constraints can enhance the promotion effect of green trade barriers on the green technological transformation of enterprises,but cannot reduce its inhibiting effect on green technology innovation.The study also finds that even if the time window is extended to the medium and long term,green trade barriers cannot have a significant positive impact on enterprises’green technology innovation.Therefore,the government should not overestimate the role of green trade barriers in encouraging green development and green technology innovation,nor should it rely too much on loose financing policies.In contrast,government should formulate targeted industrial policies to help enterprises overcome green trade barriers through technological innovation.

利用Trap机制实现网络故障实时监听

针对“集团军 (师 )防空作战指挥系统通信网络系统的故障诊断”,利用系统托盘技术和多线程技术、数据库技术 ,在 Windows NT4 .0下 ,利用 SNMP协议 ,采用 Visual C+ + 6 .0实现

Optimization of the sex pheromone-based method for trapping field populations of Phthorimaea operculella(Zeller)in South China

Despite the identification of the potato tuber moth Phthorimaea operculella(Zeller)sex pheromone,no effective application based on this pheromone has yet been developed and evaluated.This study investigated the effect of pheromone lures,trap densities,heights of trap deployment,and pheromone doses in Yunnan,China,for the purpose of increasing the control efficiency of P.operculella and improving the application of pheromone technology in the field.The results showed that lures made of corn oil and red PVC pipes attracted the highest number of moths(11.73±1.90 per trap per day).Sex pheromone loading of 100μg was optimal for trapping moths,but higher doses of pheromone inhibited attraction.The density of traps did not affect capture rates;therefore,the optimum trap density was 30–40 traps ha^(–1).The optimum height of trap deployment was not above the height of the plant canopy.This study provides technical details necessary for the monitoring and control of potato tuber moth using sex pheromones.

Causes of "High Income Trap" in Developed Countries and Coping Strategies

The economic crisis in 2008 dealt a heavy blow to the developed countries and even the whole world. The long-term stable growth of the western economy was broken,and it is mired into the so-called " high-income trap". This paper argues that the reasons why developed countries fall into the " high income trap" can be summarized as three aspects: internal factors,external factors and fundamental reasons. On this basis,this paper analyzes the response strategies and effects of developed countries,in order to provide a reference for our country to be a high-income country while maintaining sustained and stable economic growth.

中东地区碳酸盐岩油藏钻井工程技术现状及发展趋势

中国石油自进入中东地区以来在该地区5个国家获得14个项目,已钻井3 200余口,其中作业者项目1 100余口。中东地区碳酸盐岩油藏通常从上到下分布4~7套储层,井深及温度压力变化范围大,主要采用立体井网多井型组合丛式平台钻井。巨厚碳酸盐岩地层岩性及压力系统复杂,地层软硬交错,漏失通道复杂,同层漏垮矛盾突出,钻井过程中普遍存在漏失、垮塌阻卡频发等问题。为此,系统总结了十多年来中国石油及西方石油技术服务公司在该地区的钻井工程技术进展与实践成果,着重介绍了中东碳酸盐岩防漏堵漏技术、典型薄弱地层防塌技术及定向井钻井技术,分析了中国石油在该地区与西方公司在钻井工程技术方面存在的差距,并结合中东地区油田目前钻井存在的问题及未来开发面临的新形势与新要求,指出中东地区未来钻井工程将面临深部油藏、低渗透及超低渗透油藏、大平台钻井、分层规模注采和老井利用等方向的发展需求,为该地区未来钻井工程技术发展提供了参考。

中国社会医疗保险制度未来发展的挑战与创新建议

中国社会医疗保险制度发展至今,已覆盖了95%以上的人口,筹资和报销待遇都达到了与国民经济所处的中等收入国家地位相称的水平,但也存在不同人群待遇相差悬殊、医保基金使用效率不高的问题。未来需要从实现公平的国民待遇、进行科学的医保筹资规划、制定统一的医疗服务价格、设计合理的医保报销政策、明确划分中央与地方政府的职责等方面,正视挑战,创新发展,避免医保制度发展的中等收入陷阱。

提升全要素生产率与促进经济高质量增长

改革开放以来,我国人均国内生产总值与高收入国家水平的距离进一步缩小,显示我国将会较快迈入中高收入国家行列。在新的发展阶段,我国需要完整、准确和全面贯彻新发展理念,加快构建新发展格局,保持经济高质量增长。经济的高质量增长需要质的有效提升和量的合理增长。本文比较分析了世界各国在人均国内生产总值超过1万美元后的经济增长特征,指出此时影响不同国家经济增长速度的最重要因素是全要素生产率的提升。基于此,本文提出了提升全要素生产率以促进我国经济高质量增长的实际途径和政策建议。

中学化学实验与信息技术融合的内涵与实践路径

当前,中学化学实验面临与信息技术融合的迫切需求,手持技术正在推动技术融合进入数字化阶段。技术融合实现了实验技术的升级、实验组织的创变和实验社会化的过渡,有助于培养研究型、技术型、创新型人才。技术融合可遵循如下实践路径:在技术层面,借助手持技术突破实验难点,重点建立“技术—难点”的对应关系;在组织层面,构筑适配手持技术的实验组织系统,形成数字化实验理论框架、以案例为主体的内容体系和数字化“课程—教材—实验室”资源体系;在社会化层面,沿循“区域联动”等五大路径,促进成果资源的推广与交流。

成渝中线高速铁路时速400 km关键技术创新研究

成渝中线高速铁路建成后将成为我国建设标准最高、运行速度最快的高速铁路。为贯彻国家创新驱动发展战略,结合中国国家铁路集团有限公司CR450科技创新工程,依托成渝中线高速铁路的建设,开展我国时速400 km高速铁路关键技术的创新研究和更高速度标准的综合试验验证,系统优化完善我国既有时速250~350 km高速铁路基础理论及规范标准,全面构建时速400 km全生命周期技术标准体系。研究成果不仅可助推我国高速铁路装备升级和高速铁路成套建造技术创新发展,还能指导我国的既有高速铁路网进一步提速,促进区域社会经济高质量发展。