Research on Consumption Structure of Rural Residents in Gansu Province Based on ELES Model

By using cross-section data on consumption structure of rural residents in Gansu Province in 2007 and 2008,this paper adopts ELES model to conduct empirical analysis on consumption structure of rural residents in Gansu Province.It indicates that in the current consumption structure of rural residents in Gansu Province,food expenditure is still at the most important and basic level;the overall consumption level of rural residents in Gansu Province is not high;at present,the consumption of rural residents in Gansu Province still hinges in a large measure on income,vulnerable to the price fluctuation.Consequently,increasing farmers' income and stabilizing the level of commodity price,turns out to be a foundation as well as an important approach to improve consumption structure of rural residents in Gansu Province.

Comparative Research on Prediction Model of China's Urban-rural Residents' Income Gap

By using the data concerning China's urban-rural residents' income gap from 1978 to 2010,this paper mainly researches the application of several kinds of models in predicting China's urban-rural residents' income gap.By conducting empirical analysis,we establish ARIMA prediction model,grey prediction model and quadratic-polynomial prediction model and conduct accuracy comparison.The results show that quadratic-polynomial prediction model has excellent fitting effect.By using quadratic-polynomial prediction model,this paper conducts prediction on trend of China's urban-rural residents' income gap from 2011 to 2013,and the prediction value of income gap of urban-rural residents in China from 2011 to 2013 is 14 173.20,15 212.92 and 16 289.67 yuan respectively.Finally,on the basis of analysis,corresponding countermeasures are put forward,in order to provide scientific basis for energy planning and policy formulation:first,strengthen government's function of public service,coordinate resources,and strive to provide an equal opportunity of development for social members,so as to promote people's welfare and promote social equality;second,breach industrial monopoly and bridge income gap between employees in monopoly industry and general industry;last but not the least,support,encourage and call for government to establish social relief fund,adjust residents' income distribution from the non-governmental perspective,and endeavor to promote the income level of low-income class.

Modeling on Residence Time Distribution in Subsurface Flow Constructed Wetlands by Multi Flow Dispersion Model

As an important design factor for constructed wetlands,hydraulic retention time and its distribution will affect the treatment performance.Instantaneously injected sodium chloride tracers were used to obtain residence time distributions of the lab scale subsurface flow constructed wetland.Considering the presence of trailing and multiple peaks of the tracer breakthrough curve,the multi flow dispersion model(MFDM)was used to fit the experimental tracer breakthrough curves.According to the residual sum of squares and comparison between the experimental values and simulated values of the tracer concentration,MFDM could fit the residence time distribution(RTD)curve satisfactorily,the results of which also reflected the layered structure of wetland cells,thus to give reference for application of MFDM to the same kind of subsurface flow constructed wetlands.

Analysis and Prediction of Rural Residents’ Living Consumption Growth in Sichuan Province Based on Markov Prediction and ARMA Model

I select 32 samples concerning per capita living consumption of rural residents in Sichuan Province during the period 1978-2009. First, using Markov prediction method, the growth rate of living consumption level in the future is predicted to largely range from 10% to 20%. Then, in order to improve the prediction accuracy, time variable t is added into the traditional ARMA model for modeling and prediction. The prediction results show that the average relative error rate is 1.56%, and the absolute value of relative error during the period 2006-2009 is less than 0.5%. Finally, I compare the prediction results during the period 2010-2012 by Markov prediction method and ARMA model, respectively, indicating that the two are consistent in terms of growth rate of living consumption, and the prediction results are reliable. The results show that under the similar policies, rural residents' consumer demand in Sichuan Province will continue to grow in the short term, so it is necessary to further expand the consumer market.

An Empirical Study on the Coupling and Coordination of Health Investment, Resident Health and Economic Growth in Sichuan Province —Based on a Modified Coupling Model

We should calculate the coupling degree of medical investment, resident health and economic growth in Sichuan Province, and make clear the coordinated development of the aforementioned three factors. In that, the government was able to formulate policies that feature the positive interaction and coordinated development of regional medical investment, health and economy. Methods on index system for the evaluation of health investment, resident health and economic growth were constructed, and the coupling and coordination degree of the three systems were empirically studied based on the entropy weight method, the coupling coordination model and the gray correlation method. From the perspective of time series, the overall coupling and coordination level of Sichuan Province is relatively low, and the comprehensive development level of health investment and economic growth system has lagged behind the resident health system;from the perspective of spatial distribution characteristics, in 2019, the coordinated development level of health investment resident health and economic growth coupling in western Sichuan, southern Sichuan, northern Sichuan, eastern Sichuan and northern Sichuan is in the primary coordination stage, but there is a lag in the development of the health investment system between western Sichuan and southern Sichuan, and there is a lag in the development of the economic growth system between northern Sichuan and eastern Sichuan. From the analysis of gray correlation degree, the main correlation factors are diverse. All in all, the overall coordination level of health investment, resident health and economic growth in Sichuan Province is relatively low, and in order to achieve its coordinated development, it is necessary to narrow regional differences, formulate coordinated development strategies according to local conditions, and improve the overall coordination level.

The Prediction for the Consumer Price Index of Residents in Perspective of Time Series Method in Case of Chongqing

The consumer price index (CPI) measures the relative number of changes in the price level of consumer goods and services over time, reflecting the trend and degree of changes in the price level of goods and services purchased by residents. This article uses the ARMA model to analyze the fluctuation trend of the CPI (taking Chongqing as an example) and make short-term predictions. To test the predictive performance of the model, the observation values from January to December 2023 were retained as the reference object for evaluating the predictive accuracy of the model. Finally, through trial predictions of the data from May to August 2023, it was found that the constructed model had good fitting performance.

基于RESID方法的液体火箭发动机实时故障诊断算法设计及半实物仿真验证

针对氢氧发动机设计了实时故障诊断算法并通过半实物仿真平台对此进行了仿真分析,为建立液体火箭发动机健康管理系统奠定了坚实基础;首先,构建了大推力氢氧发动机常见故障模型,由此可获得典型故障数据;其次,设计并构建了RESID模型,介绍了RESID在故障诊断中的应用及诊断流程,最后,采用RESID算法设计了氢氧发动机实时故障诊断系统,并开展了半实物仿真分析,由仿真结果可见该算法及时有效的诊断出故障,并结合工程实际情况进行了报警,满足了发动机对故障诊断系统的需要。

运动休闲特色小镇对当地居民收入增长的影响机制研究——基于双重差分模型的政策效应评估

运动休闲特色小镇作为体育产业内容的有效载体,是重构当地产业结构、居民生产方式和城乡融合路径的重要实践。通过系统梳理运动休闲特色小镇对当地居民收入产生影响的政策背景和理论机制,并基于2011—2022年290个地级市面板数据,利用运动休闲特色小镇建设这一准自然实验构造双重差分模型,实证分析运动休闲特色小镇建设与当地居民收入之间的因果关系。研究表明:1)运动休闲特色小镇发展能够在整体上显著提升居民平均收入水平,该结论经过一系列稳健性检验后仍然成立。2)异质性分析发现,这一影响在东部和中部地区更显著,西部地区未通过显著性检验且出现抑制作用,同时中心城市大于外围城市效果,表现出空间溢出效应。3)机制检验发现,增加就业岗位和完善基础设施建设均能在提升居民收入水平中起到部分中介效应,进一步分析发现,运动休闲特色小镇建设能够缩小城乡收入差距但效果不明显。建议:优化运动休闲特色小镇产业链条,提升当地居民就业质量;强化运动休闲特色小镇供给水平,构建特色化基础设施体系;深化运动休闲特色小镇资源优势,推动区域协同高质量发展。

The Spatial Distribution Characteristics of Resident Population Growth Rate in Henan Province, China

Population is an important strategic resource for national development, a fundamental element of socio-economic development. The coordinated development of population and economy is an effective way to achieve rapid economic growth. Based on the population statistics data of counties (districts) in Henan Province, China, from 2006 to 2021. The paper firstly uses the logistic population growth mathematical model to calculate the resident population growth rate of counties (districts), then utilizes the hotspot analysis and spatial semi-variogram analysis, to research the spatial distribution characteristics of the resident population growth rate in Henan Province. The research results show that the evolution of the regional resident population in the province basically conforms to the logistic natural growth model. The resident population growth rate shows the characteristics of high in the north and low in the south, high in the center and low in the surrounding regions. The resident population growth rate is positively correlated with the level of economic development;the urban built-up areas, especially the new regions in urban planning, have a fast growth rate of resident population, which has a significant siphon effect on the population of surrounding regions. The hotspots of resident population growth rate in the province are mainly distributed in the urban built-up areas and surrounding regions of Zhengzhou, Luoyang, and Xinxiang, accounting for about 3.51% of the total area of the province. The cold spots are mainly distributed in the eastern part of the province, forming zonal distribution, which spans across Shangqiu City, Zhoukou City, and Zhumadian City, accounting for about 8.61% of the total area of the province. The area with negative growth of resident population accounts for approximately 53.47% of the total province. The spatial distribution of the growth rate of the resident population in the whole province basically conforms to the spherical model, with a small dispersion degree and a short range. In the range, there is a high degree of variability in resident population growth rate.

数字物流赋能农村居民消费升级:理论基础、机制分析和实现路径

我国农村地区人口众多,消费市场潜力巨大,其消费市场的扩大将促进国内供给体系升级和转型。数字物流作为连接生产与消费的关键纽带,不仅提升了农村居民的消费品可得性,还促进了农产品的上行发展,对推动农村居民消费、释放我国内需潜力具有十分重要的现实意义。以我国2010—2021年278个地级市和4个直辖市的面板数据为基础,通过建立面板固定效应模型、中介效应模型、门槛效应模型,实证检验数字物流对农村居民消费升级的影响及作用机制。研究发现:数字物流对农村居民消费升级具有正向影响;产业结构升级在数字物流推动农村居民消费升级过程中发挥着部分中介效应;同时,产业结构升级在数字物流推动农村居民消费升级的过程中发挥着门槛效应;数字物流对农村居民消费升级的影响存在不同区域、不同发展阶段、数字物流不同维度、不同消费升级水平的异质性。

运动干预对社区居民体形态与体成分的影响研究

通过招募20~60岁的实验被试62人,运用跨理论模型的阶段理论(前意向、意向、准备、行动和维持)将被试划分为运动习惯育成组和科学健身指导组,遵循实验要求完成实验的被试共46人;在实验前后对被试进行运动健康检测评估(实验前测T0和实验后测T1),并根据被试的身体情况及行为阶段推荐运动处方。研究结果表明:(1)8周的行为改变干预能显著改善社区居民的体形态指标,对体成分也有相应的作用;(2)社区居民体脂与体形态之间存在正相关关系,且跨理论模型的运动干预能增加骨骼肌与体形态呈现反向关系;(3)体脂是影响社区居民体形态指标的核心因素。

防腐剂羟苯甲酯和对羟基苯乙酮皮肤局部刺激性及驻留量和透皮量研究

目的:评估防腐剂羟苯甲酯和对羟基苯乙酮皮肤局部刺激和皮肤中暴露量。方法:应用鸡胚绒毛膜尿囊膜模型评估皮肤局部刺激;应用巴马小型猪皮肤模型评估防腐剂经皮透过量和皮肤中驻留量。结果:鸡胚试验确定羟苯甲酯在浓度≤0.2%时,无刺激性。对羟基苯乙酮在浓度≤1.0%时,无刺激性。离体透皮试验表明,面膜贴敷20 min、1 h和2 h后,羟苯甲酯和对羟基苯乙酮在皮下接收液和皮肤中均有暴露,且皮肤中驻留量远高于皮下接收液的量。在贴敷20 min时,两种防腐剂在皮肤中驻留量分别约是皮下接受液含量的14和12倍。离体透皮试验也显示,透明质酸能降低羟苯甲酯和对羟基苯乙酮经皮透过量,但能显著增加两者在角质层和真皮层皮肤中暴露量。皮肤中暴露与安全性分析显示,羟苯甲酯在真皮层中2个时间点的浓度均高于细胞毒性浓度,可能存在潜在局部皮肤毒性。对羟基苯乙酮有效抑菌浓度和安全浓度相差较小,长时间贴敷面膜,皮肤中驻留量累积也可能产生潜在副作用。结论:本方法可用于评估化妆品中防腐剂局部皮肤刺激和经皮透过量和皮肤中驻留量,为化妆品防腐剂的安全性评估提供一种评估方法。

全科住培中肛肠外科的教学模式探索

全科住院医师的规范化培训对于提高我国基层医疗卫生机构的诊疗水平、解决广大人民群众看病难的问题具有重要意义。目前,我国在全科医师的肛肠外科规范化培训方面还处于探索阶段。肛肠外科疾病发病率高,病情复杂多变,还存在教学任务重、教学时间短、涉及患者隐私和实践机会少等诸多问题。为了解决这些问题,首先根据基层医院的具体需求制定培训目标和相应的培训方案。其次,不仅要对他们进行病房急危重症患者的救治培训,更要重视门诊常见疾病的诊治培训。另外,要充分应用人体模型、临床小讲课、以问题为基础的教学法(problem-based learning,PBL)和案例教学法(case-based learning,CBL)进行培训,提高培训的效率和效果。而且,要注重自主学习能力和诊治规范性的培养,打造高素质的基层医疗人才。最后,还要严格落实各项教学的规章制度,保证日常教学活动的高效开展。并在教学实践中反复改进培训方案和教学方法,不断提升全科医师在肛肠外科领域的诊疗水平。

苏州市大规模安置社区综合整治优先级研究

在城市更新背景下,文章以大规模安置社区为研究对象,明确其综合整治中各项性能指标的综合整治优先级及策略。基于苏州市阳山花苑的调研数据,运用修正的IPA模型对居民满意度改造优先级进行分析。研究表明,物业服务、邻里关系、购物餐饮设施方便性、景观设计、公共活动空间面积是大规模安置社区综合整治中需要优先考虑的因素,并且其优先级为:物业服务>邻里关系>购物餐饮设施方便性>景观设计>公共活动空间面积。

Impact of social isolation and resident intruder stress on aggressive behavior in the male rat

Stress studies frequently utilize physical stressors to establish animal models of stress. In the majority of cases, these models are not consistent with human circumstances. The present study simulated a social isolation plus resident intruder stress model in the rat. The rats were subjected to daily social isolation and resident intruder stress for 2 weeks. Behaviors were then tested. Rats subjected to social stress exhibited different aggressive behavior styles; some rats had greater scores on composite aggression behaviors, as well as locomotor and exploratory activity, but lower scores on latency than others. The high-aggressive group exhibited predominantly anger-out, while the low-aggressive group exhibited anger-in. Results suggest that social isolation plus resident intruder may serve as an appropriate model for anger-in and anger-out emotion modeling in the rat.

Modeling study on the flow patterns of gas–liquid flow for fast decarburization during the RH process

A water model and a high-speed video camera were utilized in the 300-t RH equipment to study the effect of steel flow patterns in a vacuum chamber on fast decarburization and a superior flow-pattern map was obtained during the practical RH process. There are three flow patterns with different bubbling characteristics and steel surface states in the vacuum chamber： boiling pattern（BP）, transition pattern（TP）, and wave pattern（WP）. The effect of the liquid-steel level and the residence time of the steel in the chamber on flow patterns and decarburization reaction were investigated, respectively. The liquid-steel level significantly affected the flow-pattern transition from BP to WP, and the residence time and reaction area were crucial to evaluate the whole decarburization process rather than the circulation flow rate and mixing time. A superior flow-pattern map during the practical RH process showed that the steel flow pattern changed from BP to TP quickly, and then remained as TP until the end of decarburization.

农民增收路径的协同演化机制研究 ——基于哈肯模型对重庆市武隆区数据的实证分析

共同富裕是中国式现代化的重要特征,其中最艰巨的任务是推动农村居民可持续增收,实现共同富裕.该文修正了哈肯模型,基于重庆市武隆区2012-2022年的数据,识别序参量,计算协同度,推导出了3条结论:①产业收入将是农民长期稳定的收入来源;②农村“城市化”建设将可持续带动农民增收;③最近3年来,产业收入协同度不断降低,改革势在必行.结合研究结论,提出了3条政策建议.

Factors Influencing Urban Residents' Tea Consumption Habits: An Empirical Study of Hangzhou City

Based on the survey data concerning residents in Hangzhou City, we analyze the main factors influencing consumers' spending decisions, using Probit model. The results show that gender, age, and personal income have a significant positive effect on whether to drink tea; the degree of understanding of the tea, and the number of acquaintances drinking water also have a significant positive effect on whether to drink tea; but individual career, unit characteristics, and educational level have no significant positive effect on whether to drink tea. This research conclusion can provide microscopic evidence for the tea industry's healthy development and formulation of marketing strategies; at the same time, provide a reference for marketing of the other hobby products.

OKR在检验医学住院医师规范化培训中的应用探讨

随着检验医学的高速发展,临床实验室得到了新的诠释,检验科不再仅限于执行标本收集、检验分析、结果报告等技术性工作,而应转变为一个能够为疾病诊疗提供实验室诊断信息的重要诊断科室。其需要积极主动参与到临床疾病的预防、诊断、治疗、预后评估等医疗活动中。检验医师作为一支新兴的医疗队伍应运而生,其角色不仅仅是技术执行者,更应充当实验室与临床医疗间的桥梁。在这个背景下,如何更好地进行检验住院医师规范化培训成为亟待解决的重要问题。本文通过对检验住院医师规范化培训内容的分析,探讨了目标与关键成果法(objectives and key results,OKR)在住培中的应用价值和意义。这一方法旨在明确培训的具体目标,并通过关键成果的达成来评估培训的有效性。借助OKR,不仅可以更加精准地设定检验医师培训的目标,而且可以在培训过程中更好地衡量和监控实际的学习成果,能够促进检验医学专业的规范化发展,培养更具综合素养和专业技能的医学人才。

RESIDENCE TIME DISTRIBUTION IN AN OPEN REACTOR:EFFECT OF BACKGROUND REACTANT ON TRACER DISPERSION

A new approach is presented for deriving the residence time distribution(RTD)in open-type reactors with exclusion of residence in the fore section.Inasmuch as failure to predict the con-version of chemical reactions has been evidenced in many occasions,numerical solution of tracerdispersion in the presence of background concentration gradient of reactant is given to demonstratethe strong effect of background reactant on the true RTD a reactant molecule experiences.Withinthe error of computation,the conversion of a first-order chemical reaction under steady state is shownto be equal in both closed and open reactors,despite difference in relevant