‘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.

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.

How Can China Avoid The "Low-to-Moderate Income Trap"?

At present, China finds itself at a crucial moment of development. Economic growth should embody the requirement of "sound and fast" development, whose prerequisite should be reasonable and orderly income distribution. Theory and the experience of other countries show that when making the transformation from a moderate to high income society, wide income distribution discrepancies may hinder economic growth. To avoid falling into this trap, China needs to strike a balance between utilizing both market mechanisms and government regulation to achieve a "fair" and "efficient" income balance during the rudimentary and redistribution phase.

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＂.

基于UPLC-Q-Orbitrap HRMS和网络药理学及分子对接分析助眠汤治疗失眠的潜在机制

目的:基于UPLC-Q-Orbitrap HRMS和网络药理学及分子对接,阐明助眠汤治疗失眠的物质基础及潜在的作用机制。方法:采用UPLC-Q-Orbitrap HRMS技术鉴定助眠汤的化学成分。流动相:0.3%甲酸水溶液(A)-乙腈(B);梯度洗脱:0~7.1 min,8%~16.7%B;7.1~7.7 min,16.7%B;7.7~8.3 min,16.7%~17%B;8.3~9.5 min,17%~18.2%B;9.5~10.1 min,18.2%B;10.1~17.3 min,18.2%~26%B;17.3~24.5 min,26%~55%B;24.5~40 min,55%B。流速:0.3 mL·min^(-1),电喷雾离子源:ESI,正、负离子模式扫描,扫描范围:m/z 50~2200。在此基础上,选择失眠的临床表现和病因作为媒介,利用在线数据库对助眠汤的促进睡眠机制潜在药效物质基础、作用靶点和作用特征进行预测分析。从煎煮后测得的活性成分的作用特点入手,运用网络药理学探究助眠汤治疗失眠的潜在机制。结果:使用UPLC-Q-Orbitrap HRMS分析并鉴定了助眠汤中391种成分,其中有43种成分能于在线数据库中找到其作用的相关靶点。使用相关数据库检索“insomnia”“sleeplessness”关键词,找到失眠相关靶点基因28182个,通过韦恩分析,预测筛选出与助眠汤失眠作用相关靶点92个,经分析,共筛选得到37个关键靶点。助眠汤通过作用于环加氧酶1(PTGS1),环加氧酶2(PTGS2),内皮型一氧化氮合酶(NOS3),DNA拓扑异构酶2(TOP2),β2肾上腺素能受体(ADRB2)等靶点和RAS、Jak-STAT等信号通路发挥对失眠症的治疗作用。结论:助眠汤呈现了多成分、多靶点、多途径治疗失眠的作用特点。

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.

High contrast atomic magnetometer based on coherent population trapping

We present an experimental and theoretical investigation of the coherent population trapping （CPT） resonance excited on the D1 line of 87Rb atoms by bichromatic linearly polarized laser light. The experimental results show that a lin｜｜lin tran- sition scheme is a promising alternative to the conventional circular-circular transition scheme for an atomic magnetometer. Compared with the circular light transition scheme, linear light accounts for high-contrast transmission resonances, which makes this excitation scheme promising for high-sensitivity magnetometers. We also use linear light and circular light to detect changes of a standard magnetic field, separately.

Adiabatic cooling for cold polar molecules on a chip using a controllable high-efficiency electrostatic surface trap

We propose a controllable high-efficiency electrostatic surface trap for cold polar molecules on a chip by using two insulator-embedded charged rings and a grounded conductor plate. We calculate Stark energy structure pattern of ND3 molecules in an external electric field using the method of matrix diagonalization. We analyze how the voltages that are applied to the ring electrodes affect the depth of the efficient well and the controllability of the distance between the trap center and the surface of the chip. To obtain a better understanding, we simulate the dynamical loading and trapping processes of ND3 molecules in a ｜J, KM = ｜1,-1 state by using classical Monte–Carlo method. Our study shows that the loading efficiency of our trap can reach ～ 88%. Finally, we study the adiabatic cooling of cold molecules in our surface trap by linearly lowering the potential-well depth（i.e., lowering the trapping voltage）, and find that the temperature of the trapped ND3 molecules can be adiabatically cooled from 34.5 m K to ～ 5.8 m K when the trapping voltage is reduced from-35 k V to-3 k V.

基于UHPLC-QTRAP-MS/MS的淫羊藿中多元活性成分动态累积的分析与评价

建立了超高效液相色谱-三重四极杆线性离子阱串联质谱(UHPLC-QTRAP-MS/MS)同时测定淫羊藿中黄酮类、生物碱类、酚酸类、氨基酸类及核苷类共50种活性成分的分析方法,并对其多元活性成分的动态累积进行分析与评价。采用Agilent ZORBAX Extend-C18(2.1 mm×100 mm,1.8μm)色谱柱,以水(含0.2%甲酸)-乙腈为流动相梯度分离,流速0.3 mL/min,柱温40℃。质谱配备电喷雾离子源,在正、负离子模式下采用多反应监测模式(MRM)进行测定;采用单因素实验及响应面法优化样品制备条件,灰色关联度分析(GRA)对不同采收期淫羊藿样品进行分析与评价。结果显示,50种目标成分在一定范围内线性关系良好(r2≥0.9990),精密度、重复性和稳定性良好,平均加标回收率为94.5%~107%,相对标准偏差(RSD)均小于5.0%。淫羊藿中多元活性成分累积量在7月中旬出现峰值,不同类别成分累积规律具有一定差异性。6月下旬至7月下旬所采收的淫羊藿药材综合质量较好,与当地传统采收期基本吻合。该研究所构建的方法准确、可靠,可为探究淫羊藿中多元活性成分动态累积规律及确定适宜采收期提供依据,同时也箭叶淫羊藿药材质量的综合评价和整体控制提供方法参考。

Efficient loading of ultracold sodium atoms in an optical dipole trap from a high power fiber laser

We report on a research of the loading of ultracold sodium atoms in an optical dipole trap,generated by two beams from a high power fiber laser.The effects of optical trap light power on atomic number,temperature and phase space density are experimentally investigated.A simple theory is proposed and it is in good accordance with the experimental results of the loaded atomic numbers.In a general estimation,an optimal value for each beam with a power of 9 W from the fiber laser is achieved.Our results provide a further understanding of the loading process of optical dipole trap and laid the foundation for generation of a sodium Bose–Einstein condensation with an optical dipole trap.

A Study on Income as a Determinant of Buying Decision-making StylesAdyasha

The following paper attempts to understand if income determines the buying decision-making styles of consumers in Bhubaneswar,the capital city of Odisha,a state located on eastern India.A total of 103 respondents of Bhubaneswar were chosen by using the Mall intercept method.The samples were classified into three groups based on their average annual family income such as High Income,Middle Income and Low Income groups.Exploratory Factor Analysis was carried to identify the decision-making styles.ANOVA was employed to compare the shopping styles of these three income sub-groups.Results indicate that differences in consumer shopping styles exist among the income sub-groups.Findings of the study can be used by marketers for segmentation,targeting and positioning of retail shoppers which may facilitate them to compete efficiently.It is recommended that different income sub-groups should be viewed as distinct consumer segments and strategies should be formulated to cater each segment effectively.

Investigation of trap states in Al_2O_3 InAlN/GaN metal–oxide–semiconductor high-electron-mobility transistors

In this paper the trapping effects in Al2O3/In0.17Al0.83N/GaN MOS-HEMT（here, HEMT stands for high electron mobility transistor） are investigated by frequency-dependent capacitance and conductance analysis. The trap states are found at both the Al2O3/In AlN and InAlN/GaN interface. Trap states in InAlN/GaN heterostructure are determined to have mixed de-trapping mechanisms, emission, and tunneling. Part of the electrons captured in the trap states are likely to tunnel into the two-dimensional electron gas（2DEG） channel under serious band bending and stronger electric field peak caused by high Al content in the In AlN barrier, which explains the opposite voltage dependence of time constant and relation between the time constant and energy of the trap states.

Temperature- and voltage-dependent trap generation model in high-k metal gate MOS device with percolation simulation

High-k metal gate stacks are being used to suppress the gate leakage due to tunneling for sub-45 nm technology nodes.The reliability of thin dielectric films becomes a limitation to device manufacturing,especially to the breakdown characteristic.In this work,a breakdown simulator based on a percolation model and the kinetic Monte Carlo method is set up,and the intrinsic relation between time to breakdown and trap generation rate R is studied by TDDB simulation.It is found that all degradation factors,such as trap generation rate time exponent m,Weibull slope β and percolation factor s,each could be expressed as a function of trap density time exponent α.Based on the percolation relation and power law lifetime projection,a temperature related trap generation model is proposed.The validity of this model is confirmed by comparing with experiment results.For other device and material conditions,the percolation relation provides a new way to study the relationship between trap generation and lifetime projection.

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。

基于^(7)Li冷原子操控的超高真空测量

国际单位制的重新定义促进真空计量体系向量子化转变,真空参数的量子化是国际真空测量学领域目前最具引领性、前瞻性和颠覆性的研究方向之一,量子真空测量是基于微观粒子体系的量子效应,利用光学手段和量子力学理论实现真空参数的精密测量.本文通过自主研制的冷原子真空测量装置操控^(7)Li原子,利用锂冷原子在磁光阱和磁阱中的逃逸损失特性开展了超高真空测量实验研究,结果表明,针对N_(2),Ar,He,H2四种真空常用气体分子,在3×10^(-8)-4×10^(-5)Pa真空范围,^(7)Li冷原子真空测量的不确定度最大为7.6%-6.0%(k=2),^(7)Li冷原子的真空反演结果与传统电离真空计的测量结果具有良好的一致性,其相对灵敏度因子的最大偏差小于8%,验证了冷原子量子真空测量的准确性和可靠性,研究成果对促进全新跨代真空测量技术发展,满足空间科学探测、超精密测量与高端装备制造等需求具有重要意义.

The Influence of the Urban-Rural Income Disparity on the Industrial Structure—Taking the Yangtze River Delta Region as an Example

In this paper, the effect of the mediation effect is mainly used to test and analyze the regression model, and most scholars have studied the impact of the modernization of the industrial structure on the income gap. However, this paper is from another perspective, based on the social background of high-quality development, the main study is the impact mechanism of urban and rural income gap on the industrial structure, taking the Yangtze River Delta as the main research object, and specifically selecting 22 central cities in the Yangtze River Delta region, which is also one of the highlights of this study. The regression model is constructed by using the intermediary effect, and the four intermediary variables of fiscal expenditure (M1), fixed asset investment (M2), number of patent applications (M3), and total import and export (M4) are selected, which represent the role of the government, fixed asset investment, scientific and technological level and opening-up level, and study and analyze the inherent influence mechanism between each variable. Before doing specific research, I consulted the papers and literature of many other outstanding scholars, among which Cheng Yuhong and Cheng Chi’s “The Influence Mechanism of industrial structure of urban and rural income gap” [1] has great reference value for this paper. According to the research results, under the background of high-quality development in the Yangtze River Delta region, the expansion of the income gap between urban and rural areas will inhibit the upgrading of the industrial structure, so it is necessary to focus on building a new type of urbanization, accelerating the construction of an urban innovation system, optimizing the rural employment structure to narrow the income gap between urban and rural areas, and providing impetus for the continuous upgrading of the industrial structure.

高标准农田建设参与对农民种粮收益的影响——基于农业新质生产力的中介作用

基于全国10省1032份农户的微观调查数据,使用内生转换回归模型实证分析了高标准农田建设参与对农民种粮收益的影响。研究发现:(1)高标准农田建设参与显著提升农民种粮收益,且平均处理效应表明,参与高标准农田建设可使农民种粮收益提高2.77%。(2)异质性分析表明,相较于小农户,规模户参与高标准农田建设能够提升种粮收益;高标准农田建设参与不仅促进兼业农户增加种粮收益,而且促进纯农户增加种粮收益;相较于非粮食主产区,粮食主产区农户参与高标准农田建设的种粮收益提升效果更明显。(3)机制分析表明,高标准农田建设参与通过提升农业新质生产力水平,从而提高农民种粮收益。据此,鼓励农民积极参与高标准农田建设管理工作,制定出台农户参与高标准农田建设的差异化政策,同时加快培育和发展农业新质生产力,以实现农民种粮收益提升。

服务业高质量发展对城乡收入差距的影响与机制

服务业高质量发展有助于农村劳动力就业、扩大农民收入来源。促进现代服务业高质量发展是缩减城乡收入差距、推进共同富裕的重要路径。基于1997—2021年我国30个省份(未含香港地区、澳门地区、台湾地区、西藏地区)数据,使用合成控制法、双重差分模型和三重差分模型分析服务业高质量发展对城乡收入差距的影响及其机制。研究发现,服务业高质量发展有助于缩减城乡收入差距,且这种缩减作用在北京、上海最强,在江苏、天津、浙江次之,在广东最弱;服务业高质量发展对东部、中部和西部地区城乡收入差距的缩减作用均显著,但在中部地区最强,在东部和西部地区较弱;绿色发展和区域协调发展在服务业高质量发展对城乡收入差距的影响中发挥正向调节作用,服务业高质量发展对城乡收入差距的缩减作用在绿色发展水平较高、区域协调发展水平较高的省份更强;服务业高质量发展能够通过产业结构升级(包括产业结构高级化、产业结构合理化)缩减城乡收入差距。为进一步发挥服务业高质量发展对城乡收入差距的缩减作用,应持续加强服务创新,推动服务业高质量发展;发挥区域比较优势,推动区域协调发展;引导绿色消费和生产,提升绿色发展水平;推动现代服务业和新兴产业发展,促进产业结构升级。

薪酬税收激励与劳动收入份额

我国推动企业高质量发展的税收优惠政策多数偏向资本要素,而激励使用劳动要素的较少。前者通常不利于提升劳动收入份额,后者的影响又如何呢?对此,本文基于2008年薪酬抵税改革运用双重差分实证分析。研究发现:薪酬税收激励能提升劳动收入份额,在样本均值处约上升4.62%。该政策促进企业提高薪酬待遇,且普通员工受益大于管理层,并且对企业效率和效益均有正向影响。综合来看,此类税收优惠政策能更好兼顾高质量发展和共同富裕,践行“在高质量发展中促进共同富裕”宜更多运用。