It is of great significance to systematically analyze the cultivated land system resilience(CLSR) for the black soil protection and national food security.The CLSR is impacted by planting structure adjustment and cult...It is of great significance to systematically analyze the cultivated land system resilience(CLSR) for the black soil protection and national food security.The CLSR is impacted by planting structure adjustment and cultivated land quality decline,posing major hidden dangers to food security.It is urgent to evaluate the CLSR at multiple spatio-temporal scales.This study took Liaoning Province in the black soil region of Northeast China as an example.Based on the resilience theory,this study constructed the CLSR evaluation system from the input-feedback perspective at the provincial-scale and the city-scale,and used the rank-sum ratio comprehensive evaluation method(RSR) to analyze the key influencing factors of CLSR in Liaoning Province and its 14 cities from 2000 to 2019.The results showed that:1) the time series changes of CLSR at the provincial-scale and the city-scale in Liaoning Province were similar,both showing an increasing trend.2) The CLSR in Liaoning Province presented a spatial pattern of ‘high in the west and low in the east’ at the city-scale.3) There were seven and six main influencing factors of CLSR at the provincial-scale and the city-scale,respectively.In addition to the net income per capita of rural households,other influencing factors of CLSR were different at the provincial-scale and the city-scale.The feedback factors were dominant at the provincial-scale,and the input factors and feedback factors were dominant at the city-scale.The results could provide a reference for the utilization of black soil and draw on the experience of regional agricultural planning and adjustment.展开更多
To explore the optimal evaluation mechanism of open-cast mining procedure,this paper takes the actual operation status of Huolinhe No.1 Open-cast Mine as the research basis,and makes a deep analysis of the four repres...To explore the optimal evaluation mechanism of open-cast mining procedure,this paper takes the actual operation status of Huolinhe No.1 Open-cast Mine as the research basis,and makes a deep analysis of the four representative mining procedures proposed by this mine.A detailed and comprehensive evaluation system is constructed using rank-sum ratio(RSR)method.The system covers 17 key indicators and aims to evaluate the advantages and disadvantages of each scheme in an all-round and multi-angle manner.Through the calculation and analysis by RSR method,the comprehensive evaluation of the four types of mining procedure schemes is carried out,and finally the secondary river improvement project is determined as the optimal mining implementation scheme,and the joint mining scheme of the south and north areas is the alternative strategy.The research results of this paper are objective,clear and definite,can not only reveal the effectiveness and feasibility of RSR method in solving the problem of open-cast mining procedure optimization,but also provide a strong technical support and decision-making basis for the future production development of Huolinhe No.1 Open-cast Mine.Thus,this study is expected to further promote the scientific and refined process of mining operations.展开更多
目的探讨基于DEA-RSR模型对超声设备运行效率的管理,评估2021—2023年湖州市妇幼保健院超声设备运行效率,为设备管理与资源配置提供科学依据。方法以12个季度超声设备数据为样本,筛选“医技人员数量、维修费、设备数量”为投入指标,“...目的探讨基于DEA-RSR模型对超声设备运行效率的管理,评估2021—2023年湖州市妇幼保健院超声设备运行效率,为设备管理与资源配置提供科学依据。方法以12个季度超声设备数据为样本,筛选“医技人员数量、维修费、设备数量”为投入指标,“诊断人次、总收入”为产出指标;采用数据包络分析(Data Envelopment Analysis,DEA)模型测算效率并识别投入冗余与产出不足问题;结合秩和比综合评价法(Rank Sum Ratio,RSR)对各季度效率进行综合排序与分档。结果DEA分析显示,12个季度超声设备综合效率的平均值为0.944。其中,有6个季度资源配置达到DEA强有效水平,另6个季度则表现为非DEA有效,表明存在投入冗余和产出不足问题;RSR将超声设备运行效率划分为“差”“中”“好”三档,其中差级有1个季度,中级有9个季度,好级有2个季度,且RSR与概率单位呈高度正相关。结论DEA-RSR模型在优化设备运行效率方面具有一定可行性,可通过对设备运行效率的准确评估,为医院管理者提供针对性的资源调配建议,从而提升设备利用率及服务质量。展开更多
基金Under the auspices of National Natural Science Foundation of China(No.42301296)Postdoctoral Research Foundation of China(No.2022M723130)Key Projects of Social Science Planning Fund of Liaoning Province,China(No.L23AGL001)。
文摘It is of great significance to systematically analyze the cultivated land system resilience(CLSR) for the black soil protection and national food security.The CLSR is impacted by planting structure adjustment and cultivated land quality decline,posing major hidden dangers to food security.It is urgent to evaluate the CLSR at multiple spatio-temporal scales.This study took Liaoning Province in the black soil region of Northeast China as an example.Based on the resilience theory,this study constructed the CLSR evaluation system from the input-feedback perspective at the provincial-scale and the city-scale,and used the rank-sum ratio comprehensive evaluation method(RSR) to analyze the key influencing factors of CLSR in Liaoning Province and its 14 cities from 2000 to 2019.The results showed that:1) the time series changes of CLSR at the provincial-scale and the city-scale in Liaoning Province were similar,both showing an increasing trend.2) The CLSR in Liaoning Province presented a spatial pattern of ‘high in the west and low in the east’ at the city-scale.3) There were seven and six main influencing factors of CLSR at the provincial-scale and the city-scale,respectively.In addition to the net income per capita of rural households,other influencing factors of CLSR were different at the provincial-scale and the city-scale.The feedback factors were dominant at the provincial-scale,and the input factors and feedback factors were dominant at the city-scale.The results could provide a reference for the utilization of black soil and draw on the experience of regional agricultural planning and adjustment.
文摘To explore the optimal evaluation mechanism of open-cast mining procedure,this paper takes the actual operation status of Huolinhe No.1 Open-cast Mine as the research basis,and makes a deep analysis of the four representative mining procedures proposed by this mine.A detailed and comprehensive evaluation system is constructed using rank-sum ratio(RSR)method.The system covers 17 key indicators and aims to evaluate the advantages and disadvantages of each scheme in an all-round and multi-angle manner.Through the calculation and analysis by RSR method,the comprehensive evaluation of the four types of mining procedure schemes is carried out,and finally the secondary river improvement project is determined as the optimal mining implementation scheme,and the joint mining scheme of the south and north areas is the alternative strategy.The research results of this paper are objective,clear and definite,can not only reveal the effectiveness and feasibility of RSR method in solving the problem of open-cast mining procedure optimization,but also provide a strong technical support and decision-making basis for the future production development of Huolinhe No.1 Open-cast Mine.Thus,this study is expected to further promote the scientific and refined process of mining operations.
文摘目的探讨基于DEA-RSR模型对超声设备运行效率的管理,评估2021—2023年湖州市妇幼保健院超声设备运行效率,为设备管理与资源配置提供科学依据。方法以12个季度超声设备数据为样本,筛选“医技人员数量、维修费、设备数量”为投入指标,“诊断人次、总收入”为产出指标;采用数据包络分析(Data Envelopment Analysis,DEA)模型测算效率并识别投入冗余与产出不足问题;结合秩和比综合评价法(Rank Sum Ratio,RSR)对各季度效率进行综合排序与分档。结果DEA分析显示,12个季度超声设备综合效率的平均值为0.944。其中,有6个季度资源配置达到DEA强有效水平,另6个季度则表现为非DEA有效,表明存在投入冗余和产出不足问题;RSR将超声设备运行效率划分为“差”“中”“好”三档,其中差级有1个季度,中级有9个季度,好级有2个季度,且RSR与概率单位呈高度正相关。结论DEA-RSR模型在优化设备运行效率方面具有一定可行性,可通过对设备运行效率的准确评估,为医院管理者提供针对性的资源调配建议,从而提升设备利用率及服务质量。
