智能化仪表传感器非线性校正的实现

本文描述了传感器非线性特性预处理的方法．实践证明该方法适用于标准或非标准特殊传感器，处理结果使智能型仪表的测试精度有显著提高．     

适应社会主义市场经济需要 改革高校水电管理工作初探

分析了我国高校水电管理在计划经济模式下,实行统包供给制模式的特点及弊端,认为高校水电管理工作的根本出路在于改革现行的管理体制,实行计划管理与有偿服务相结合,全面推行计量收费制.     

The effects of the age and structure of population on family change]

The age structure of a population is one basic factor of population research. It is not only affected by birth, death, immigration, and marriage, but it also reflected in changes of family size. The article analyzed it from two aspects: (1) the age structure of population acts on the size and structure of the family. The younger the age structure, the larger the family size. Otherwise, it is the opposite. According to the 1982 census, 35.4% of the population was 0-14 years in rural areas, and average family size was 4.6; but in urban areas 26.0% of the population was 0-14 years and family size was 3.9. The family was characterized as a nuclear family as industrialization in economic development increased and the population aged. In the 1982 census, 64.7% were nuclear family and 6% were aging population in China. Three- generation families (or more) have decreased dramatically. The change of family size and structure is affected by change of internal family age structure. The younger population (0-14 years) is dependent and 90% live with their parents. The adult population (15-59) years are more affected by marriage, birth and social economic action. Families are established in this age period and give much more effect to fertility. The aging population (over 60) years is facing changes. They appear to be a "Defect" family because the wife or husband has passed away. They change from independent to dependent. 78.3% population over 60 years were dependent on children or social welfare, only 21.7% were independent according to the survey in Beijing Changping County.     

老年人乡村休闲养老意愿影响因素实证考察——以重庆主城都市区为例

乡村休闲养老产业发展丰富了农村产业业态,是实现乡村产业振兴的重要抓手,也是缓和城市养老压力和提高人民生活质量的重要举措。文章基于2020年9月—2020年12月重庆市主城都市区的问卷调查数据,采用logistic模型验证了影响老年人乡村休闲养老参与意愿的因素。研究结果表明家庭代际冲突、健康程度、自然环境、硬件及配套设施、服务质量均能对老年人参与意愿产生显著影响,但影响效果有所差异。结合研究结论,为推动重庆乡村休闲养老产业发展,增强参与意愿,文章提出了相应对策建议。     

农业绿色全要素生产率测度及收敛性分析——基于碳汇和碳排放双重视角CSSCI

对农业绿色全要素生产率进行科学合理的测度有助于精准把握农业碳减排潜力。本文基于2000—2019年我国省际面板数据,分别从碳汇和碳排放两个角度测度农业绿色全要素生产率,并进行了空间收敛性分析。结果表明:(1)考察期内农业绿色全要素生产率年均增速为1.1%,农业技术进步是其增长的主要动因;(2)农业绿色全要素生产率在时空演化过程中具有差异性和阶段化特征;(3)农业绿色全要素生产率呈现显著正向空间关联性,且逐渐强化,农业绿色全要素生产率较低地区发展速度要高于农业绿色全要素生产率较高地区,区域差异正在减小。研究结果对于精准评判农业碳减排潜力和碳吸收能力、实现“双碳”目标具有参考意义。     

数字经济与城市群协同发展：基于夜间灯光数据的研究

准确认识数字经济与城市群协同发展的关系,有利于拓展数字经济影响的评估视角,也为发挥数字经济和区域一体化的融合倍增效应提供有益思路。研究发现,数字经济时代城市群辐射带动区域协同发展的步伐正在加快,数据要素跨域流通打破了城市群内部和城市群之间的市场分割,助推城市群边界的有效扩大。数字经济促进城市群协同发展主要通过两个作用机制,一是推动创新主体跨城市跨区域进行合作创新,促进城市协同创新网络发育壮大;二是提升城市空间集中度,增强邻近空间范围内的城市要素集聚能力。数字经济的网络性、跳跃性及外部性特征放大了中心城市对外围城市的辐射带动作用和空间溢出效应,因此构建与数字经济相匹配的区域一体化协调机制和要素统筹配置机制正当其时。     

世界历史进程中的人类命运共同体

人类命运共同体是中国共产党人着眼于人类社会发展所提出的一项全球性倡议与创新性思想体系。从马克思主义世界历史理论来看,构建人类命运共同体不仅是应对当前全球风险挑战的需要,更与世界历史从封闭、孤立走向开放、联合的规律性趋势相一致,是世界历史向更高阶段发展过程中一个可能的“过渡阶段”。在“过渡阶段”中,社会主义、资本主义两种制度间关系是现阶段历史发展的焦点所在,并集中表现为两制国家间关系。而人类命运共同体的构建正是对两制关系内在对立性的超越,在差异性与整体性的有机统一中推动世界历史不断前进,促进社会主义蓬勃发展,最终实现共产主义的远大目标。     

Inefficiency of strategy-proof allocation mechanisms in pure exchange economies

In this paper I prove that in the standard model of 2×n (n2) pure exchange economies there is no allocation mechanism that is efficient, non-inversely-dictatorial, and strategy-proof. This strengthens two previous results on this subject by Hurwicz and by Dasgupta, Hammond, and Maskin.I thank Alvin Klevorick, William Thomson, and an anonymous referee of the journal for many helpful comments.     

再谈四川盆地小麦品种产量性状的育种目标

用近10年的小麦区试资料,从粒重的角度将四川麦区小麦品种分为“大粒型”（千粒重50g左右）、“中间型”（千粒重45g左右,穗粒数40粒左右）和“粒数型”（千粒重40g左右,稳粒数50粒以上）三类,通过相关及因子分析表明：我省推广小麦品种大多属“中间型”,该类品种丰产性、稳产性及商品性都较优良;“粒数型”品种的丰产性和稳产性在三类品种中最好但粒重较小,商品性欠佳;而“大粒型”品种对环境适应性较差,不利高产稳产。四川小麦育种宜采用“中间型”或“粒数型”路线,特别是产量水平要有所突破,更须走“粒数型”的路子。