The comprehensive carrying capacity of urban land can reflect the re- source level, economic scale, social development and environmental pressure of ur- ban land carrying. The assessment indicator system of urban land...The comprehensive carrying capacity of urban land can reflect the re- source level, economic scale, social development and environmental pressure of ur- ban land carrying. The assessment indicator system of urban land comprehensive carrying capacity was constructed from the 4 aspects of resource, economy, society, environment, and principal component analysis and cluster analysis were used to evaluate the urban land comprehensive carrying capacity of Guangxi and the 14 cities in 2005-2014, and analyzed its spatial and temporal characteristics as well as the driving forces, with the aim to provide references for improving the urban land comprehensive carrying capacity. The results showed that, the overall urban land comprehensive carrying capacity in Guangxi increased in 2005-2014, and there were significant differences in the land comprehensive carrying capacities among the cities in Guangxi in 2005-2014, in which Liuzhou, Guilin, Nanning belonged to the regions with the highest carrying capacity, while Beihai, Yulin, Wutong belonged to the regions with high carrying capacity, and the carrying capacities of the other cities changed with the changes of time. The economic development degree was an important factor influencing urban land comprehensive carrying capacity, but could not directly represent the urban land comprehensive carrying capacity level.展开更多
为解决Navi-Trainer Professional 5000型全任务大型船舶操纵模拟器无法识别S-57数据格式,致使最新的官方电子海图(ENC)数据文件无法直接应用的问题,采用Scene Editor软件进行海图数据转换,克服船舶操纵模拟器电子海图数据间不融合的问...为解决Navi-Trainer Professional 5000型全任务大型船舶操纵模拟器无法识别S-57数据格式,致使最新的官方电子海图(ENC)数据文件无法直接应用的问题,采用Scene Editor软件进行海图数据转换,克服船舶操纵模拟器电子海图数据间不融合的问题。以天津港附近水域海图文件转换为例,验证Scene Editor软件进行海图数据转换具有可行性,说明基于ENC数据文件的三维实景建模可广泛应用于船舶操纵的教学、科研和培训。展开更多
基金Supported by the Open Bidding Projects of the Office of Land and Resources of the Guangxi Zhuang Autonomous Region(GXZC2015-G3-0575-GTZB)~~
文摘The comprehensive carrying capacity of urban land can reflect the re- source level, economic scale, social development and environmental pressure of ur- ban land carrying. The assessment indicator system of urban land comprehensive carrying capacity was constructed from the 4 aspects of resource, economy, society, environment, and principal component analysis and cluster analysis were used to evaluate the urban land comprehensive carrying capacity of Guangxi and the 14 cities in 2005-2014, and analyzed its spatial and temporal characteristics as well as the driving forces, with the aim to provide references for improving the urban land comprehensive carrying capacity. The results showed that, the overall urban land comprehensive carrying capacity in Guangxi increased in 2005-2014, and there were significant differences in the land comprehensive carrying capacities among the cities in Guangxi in 2005-2014, in which Liuzhou, Guilin, Nanning belonged to the regions with the highest carrying capacity, while Beihai, Yulin, Wutong belonged to the regions with high carrying capacity, and the carrying capacities of the other cities changed with the changes of time. The economic development degree was an important factor influencing urban land comprehensive carrying capacity, but could not directly represent the urban land comprehensive carrying capacity level.
文摘为解决Navi-Trainer Professional 5000型全任务大型船舶操纵模拟器无法识别S-57数据格式,致使最新的官方电子海图(ENC)数据文件无法直接应用的问题,采用Scene Editor软件进行海图数据转换,克服船舶操纵模拟器电子海图数据间不融合的问题。以天津港附近水域海图文件转换为例,验证Scene Editor软件进行海图数据转换具有可行性,说明基于ENC数据文件的三维实景建模可广泛应用于船舶操纵的教学、科研和培训。
文摘目的利用大规模人群全基因组关联研究的汇总数据,通过孟德尔随机化分析探究血脂与糖尿病肾脏疾病(diabetic kidney disease,DKD)之间的关系。方法利用逆方差加权法、加权中位数法、孟德尔随机化-Egger回归法对三酰甘油(triglyceride,TG)、总胆固醇(total cholesterol,TC)、高密度脂蛋白(high density lipoprotein,HDL)、低密度脂蛋白(low density lipoprotein,LDL)与DKD的因果关系进行孟德尔随机化分析。以OR值和95%CI评价TG、TC、HDL、LDL等血脂指标与DKD风险的因果关系。其次进行敏感性分析来验证结果的可靠性,使用Cochran Q检验异质性,孟德尔随机化-Egger-截距检验是否存在水平多效性,Steiger检验方向性,留一法分析确定是否具有潜在影响的单核苷酸多态性等。结果逆方差加权法作为主要分析方法,其分析结果显示,遗传预测的TG(OR=1.428,95%CI:1.150~1.774,P=0.001)、TC(OR=0.683,95%CI:0.486~0.960,P=0.028)与DKD存在因果关系,HDL(OR=0.879,95%CI:0.707~1.092,P=0.244)、LDL(OR=0.911,95%CI:0.698~1.191,P=0.496)没有证据可以证明其与DKD存在因果关系。结论TG、TC在DKD发病中可能发挥作用,而没有证据证明HDL、LDL在DKD的发病中发挥作用。
