According to the historical typhoon disaster's data and the influence on the aquiculture,three risk factors were selected as the assessment indexes of typhoon disaster's fatalness.The corresponding risk assess...According to the historical typhoon disaster's data and the influence on the aquiculture,three risk factors were selected as the assessment indexes of typhoon disaster's fatalness.The corresponding risk assessment model was established.Meanwhile,combined with the GIS (Geographic Information System) space visualization technology,the disaster data's functions which included the statistics,analysis,searching,etc.were realized,and the special topic image of typhoon disaster's fatalness was drawn.展开更多
Investigation of dissolved organic carbon (DOC) and particulate organic carbon (POC) at 12 stations in Yantai Sishili Bay in May, August, and November of 1997 and March and May of 1998 showed that DOC concentrations v...Investigation of dissolved organic carbon (DOC) and particulate organic carbon (POC) at 12 stations in Yantai Sishili Bay in May, August, and November of 1997 and March and May of 1998 showed that DOC concentrations varied from 1.14 mg/L to 5.35 mg/L; that the average values at all stations in each cruise varied from 1.52 mg/L to 2.12 mg/L; that POC concentrations varied from 0.049 mg/L to 1.411 mg/L; and averaged 0.159 mg/L to 0.631 mg/L in each cruise. Horizontal distribution of DOC was influenced by factors such as continental input, organism activity, temperature, aquiculture environment, etc. The higher POC concentration occurred along the coast. The vertical distribution of DOC and POC changed obviously in spring and summer, but not obviously in autumn and winter. DOC concentration was highest in summer and POC in spring; both were lowest in winter. The seasonal change of DOC was consistent with primary productivity seasonal variation, and that of POC was consistent with chlorophyll a seasonal variation. The seasonal change trend of the C/N ratio of dissolved organic matter was obvious, but the C/N ratio of particulate organic matter had no such trend.展开更多
针对新型乡村产业结构下多能源供需特性,提出一种含水产品养殖温室的乡村综合能源分布鲁棒调度模型。首先,考虑温室热环境建立水产养殖温室热能流模型;其次,建立包含能源生产、消耗、存储的乡村综合能源系统(integrated rural energy sy...针对新型乡村产业结构下多能源供需特性,提出一种含水产品养殖温室的乡村综合能源分布鲁棒调度模型。首先,考虑温室热环境建立水产养殖温室热能流模型;其次,建立包含能源生产、消耗、存储的乡村综合能源系统(integrated rural energy system,IRES)模型;再次,考虑日内光照、环境温度和区域内居民用电的不确定性,基于KL(Kullback-Leibler divergence)散度,建立含水产养殖温室的乡村综合能源系统分布鲁棒日前调度模型;最后,以北方某乡村水产品养殖基地能源数据进行算例仿真。结果表明,所提出的乡村综合能源系统模型可以有效地改善乡村能源结构,降低农业生产成本,为乡村产业结构调整及能源转型提供理论支持。展开更多
基金Supported by The National Science & Technology Support Plan Project (2008BADB9B05)
文摘According to the historical typhoon disaster's data and the influence on the aquiculture,three risk factors were selected as the assessment indexes of typhoon disaster's fatalness.The corresponding risk assessment model was established.Meanwhile,combined with the GIS (Geographic Information System) space visualization technology,the disaster data's functions which included the statistics,analysis,searching,etc.were realized,and the special topic image of typhoon disaster's fatalness was drawn.
文摘Investigation of dissolved organic carbon (DOC) and particulate organic carbon (POC) at 12 stations in Yantai Sishili Bay in May, August, and November of 1997 and March and May of 1998 showed that DOC concentrations varied from 1.14 mg/L to 5.35 mg/L; that the average values at all stations in each cruise varied from 1.52 mg/L to 2.12 mg/L; that POC concentrations varied from 0.049 mg/L to 1.411 mg/L; and averaged 0.159 mg/L to 0.631 mg/L in each cruise. Horizontal distribution of DOC was influenced by factors such as continental input, organism activity, temperature, aquiculture environment, etc. The higher POC concentration occurred along the coast. The vertical distribution of DOC and POC changed obviously in spring and summer, but not obviously in autumn and winter. DOC concentration was highest in summer and POC in spring; both were lowest in winter. The seasonal change of DOC was consistent with primary productivity seasonal variation, and that of POC was consistent with chlorophyll a seasonal variation. The seasonal change trend of the C/N ratio of dissolved organic matter was obvious, but the C/N ratio of particulate organic matter had no such trend.
文摘针对新型乡村产业结构下多能源供需特性,提出一种含水产品养殖温室的乡村综合能源分布鲁棒调度模型。首先,考虑温室热环境建立水产养殖温室热能流模型;其次,建立包含能源生产、消耗、存储的乡村综合能源系统(integrated rural energy system,IRES)模型;再次,考虑日内光照、环境温度和区域内居民用电的不确定性,基于KL(Kullback-Leibler divergence)散度,建立含水产养殖温室的乡村综合能源系统分布鲁棒日前调度模型;最后,以北方某乡村水产品养殖基地能源数据进行算例仿真。结果表明,所提出的乡村综合能源系统模型可以有效地改善乡村能源结构,降低农业生产成本,为乡村产业结构调整及能源转型提供理论支持。
