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293篇 您的检索式:作者名="S Leeson"
    题名 作者 年代 出处 被引量
1凝聚度--描述与测度社会生态系统抗干扰能力的一种新特性显示文摘研究一个网络系统抵抗干扰的能力,系统科学里有'鲁棒性'的概念,社会—生态系统里用'脆弱性'、'恢复性'和'适应性'等概念.这些已有的概念是否已经全面地描述了系统抵抗干扰的能力呢?在综合灾害风险管理的实践中,整个社会凝心聚力,行动协调一致,往往发挥着至关重要的决定性作用.然而,现有学术研究中所用到的各种系统属性,都不能很好表述一个系统凝心聚力的能力或水平.鉴于此,本文提出一种全新的网络系统属性:网络凝聚度(consilience degree),专门用以度量一个如社会—生态系统一样行为的网络系统凝心聚力,行动协调一致,以抵抗干扰的能力.网络凝聚度实际上是一种更具普遍意义的'联结度'.它可以象联结度一样,派生发展出一系列的系统新属性和网络新模型,从而形成一个研究复杂系统的新的理论体系.本文将重点阐述这个体系的雏型.理论分析和仿真研究都证明:本文所提出的网络凝聚度是现有各种系统属性所无法涵盖或替代的,是研究现实复杂系统所必需的新理论工具.胡小兵 史培军 汪明 叶涛 LEESON Mark S 2014中国科学:信息科学2014,44,11:7
2Effect of dietary protein and energyon broiler carcasec composition and efficiency of nutrient utilization显示文摘Jackson S Summers J D Leeson S 1982Poultry Science1982,61,:1
3Effect of phytase enzyme on dietary nitrogen-corrected apparent metabolizable energy and the ileal digestibility of nitrogen and amino acids 显示文摘Namkung H Leeson S 1999Poultry Science1999,78,:1
4Measurement of metabolizable energy in poultry feeds by an in vitro system显示文摘VALDES E V LEESON S 1992Poultry Science1992,71,:1
5Feathering in commercial poultry I:Feather growth and composition 显示文摘Leeson S Walsh T 2004World''s Poultry Science Journal2004,60,:1
6Quantitative and qualitative feed restriction on growth characteristics of male broiler chickens显示文摘Urdaneta-Rincon M Leeson S 2002Poult Sci2002,81,:1
7Quantitative and quali- tative feed restriction on growth characteristics of male broiler chickens 显示文摘Urdaneta-Rincon M Leeson S 2002Poultry Science2002,,81:1
8Response of laying hens to supplemental niacin显示文摘LEESON S CASTON L J SUMMERS J D 1991Poultry Science1991,70,5:1
9植酸酶对肉鸡生产性能及氮消化率的影响显示文摘在肉禽日粮中添加植酸酶不仅可提高磷和锌的利用率,还可提高回肠中氮和氨基酸的消化率和表观代谢能。试验的目的是研究植酸酶日粮饲喂肉鸡对代谢能、回肠氮和氨基酸消化率的影响。H Namkung S Leeson 李峰娟 王志祥 高树华 2010饲料研究2010,33,7:1
10Laying hen performance as influenced by protein intake to sixteen weeks of age and body weight at point of lay显示文摘 Leeson S 1994J Poultry Sci1994,73,:1
11In vitro estimation of dry matter and crude protein digestibility显示文摘CLUNIES M LEESON S 1984Poultry Science1984,63,:1
12Feathering in commercial poultry II : Factors influencing feather growth and feather loss 显示文摘Leeson S Walsh T 2004World''s Poultry Science Journal2004,60,:1
13Changes in body composition and adipocyte cellularity of male broilers subjected to var- ying degrees of early life feed restriction显示文摘Zubair A K Leeson S 1996Poultry Sci- ence1996,75,6:1
14Assessment of the nitrogen cor- rectionfactor in evaluatingmetabolizableenergy of com and soybean meal in diets for broilers显示文摘Lopez G Leeson S 2008Poultry Sci- ence2008,,18:1
15Effects of acute versus chronic heat stress on broiler response to dietary protein显示文摘GONZALEZ-ESQUERRA R LEESON S 2005Poult Sci2005,84,10:1
16Layer per- formance of four strains of Leghorn pullets subjected to various rearing programs 显示文摘LEESON S CASTON L SUMMERS J D 1997Poultry Science1997,76,1:1
17Broiler response to diet energy显示文摘LEESON S CASTON L SUMMERS J D 1996Poutry Sci1996,75,4:1
18Chain scission resists for extreme ultra violet lithography based on high performance polysulfonecontaining polymers显示文摘Lawrie K J Blakey I Blinco J P Cheng H H Gronheid R Jack K S Pollentier I Leeson M J Younkin T R Whittaker A K 2011Journal of Materials Chemistry2011,21,:1
19Sorghum tannins:A review显示文摘NYACHOTI C M ATKINSON J L LEESON S 1997Worlds Poultry Science Journ1997,53,53:1
20Effect of Dietary Protein and Energy on Broiler Carcass Composition and Efficience of Nutrient Utilization显示文摘JACKSON S SUMMERS J D LEESON S 1982Poult Sci1982,61,:1
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