In the forming of the Dynamic System of Tourism Development (DSTD)in developed regions from the view of supply side,the Delphi Method and the Analytical Hierarchy Process(AHP)are used to count the weight of each compo...In the forming of the Dynamic System of Tourism Development (DSTD)in developed regions from the view of supply side,the Delphi Method and the Analytical Hierarchy Process(AHP)are used to count the weight of each component of the DSTD.It has been fou nd that the attraction subsystem is t he most important one of the three subsystems at the first hierarchical level of DSTD,which means that tourist attractions are always the principal factors for regional tourism development,even in develo ped regions.But it is also noteworth y that the significance of the attraction subsystem is not dominant in the DSTD.At the sec ond hierarchical level,the physica l attraction subsystem rank No.1,while the weight of the non-physical attraction subsystem is just a little larger t han the weight of the hardware subsystem and that of software subsystem.And the weights of the three components in the medium subsystem are similar.The top 3factors at the third hierarchical level are scenic spot,location and regional econ omic impact.The result verifies the conclusions of qualitative analysis,which depends on the market research and the study of historical date,that the most imp ortant compo-nent of the DSTD in Foshan is the impact of the developed economy.Knowing t he weight of each component of the DST D can be helpful to make out the most use ful force,furthermore to determine the future orientation for regional tourismdevelop-ment.展开更多
[Objective]The paper was to develop new fodder additives and to strengthen comprehensive utilization of Spartina alterniflora resources.[Method]The effects of biomineral liquid from S.alterniflora on growth,nutritiona...[Objective]The paper was to develop new fodder additives and to strengthen comprehensive utilization of Spartina alterniflora resources.[Method]The effects of biomineral liquid from S.alterniflora on growth,nutritional components of ricefield eels were studied.[Result]（1）0.5%of biomineral liquid had significant effect on weight gain rate,which was 8.37%higher than that in control group（P〈0.01）.Further supply of biomineral liquid could not increase the weight gain rate.Furthermore,biomineral liquid had no effect on the survival rate of ricefield eels.（2）Ricefield eels had certain changes in body color in the0.5%biomineral liquid group,and some ricefield eels were yellowing.（3）The contents of Cr,Fe,Zn in body of ricefield eels in treatment group were significantly higher than that in control group,but was lower than that in wild eel group,and the content of Se in treatment group was lower than that in control group and wild group（P〈0.01）.（4）The contents of K,Mg in muscle of ricefield eels in treatment group were higher than those in control group and wild eel group.The contents of ash and Ca in treatment group were close to that in control group but were higher than that in wild eel group.The content of crude fat in treatment group was close to that in wild eel group but was lower than that in control group.The contents of Zn,Se,Ni in treatment group were higher than that in control group and wild eel group,and the contents of Cr,Fe,Cu were close to that in control group and were higher than that in wild eel group（P〈0.01）.No significant differences were observed in the contents of moisture,crude fat and P among the three groups（P〉0.05）.[Conclusion]Addition of biomineral liquid from S.alterniflora could speed up the growth of ricefield eels and significantly improve their flesh quality,but had no significant effect on survival rate of ricefield eels.展开更多
The aim of this work is to describe and compare three exploratory chemometrical tools,principal components analysis,independent components analysis and common components analysis,the last one being a modification of t...The aim of this work is to describe and compare three exploratory chemometrical tools,principal components analysis,independent components analysis and common components analysis,the last one being a modification of the multi-block statistical method known as common components and specific weights analysis.The three methods were applied to a set of data to show the differences and similarities of the results obtained,highlighting their complementarity.展开更多
文摘In the forming of the Dynamic System of Tourism Development (DSTD)in developed regions from the view of supply side,the Delphi Method and the Analytical Hierarchy Process(AHP)are used to count the weight of each component of the DSTD.It has been fou nd that the attraction subsystem is t he most important one of the three subsystems at the first hierarchical level of DSTD,which means that tourist attractions are always the principal factors for regional tourism development,even in develo ped regions.But it is also noteworth y that the significance of the attraction subsystem is not dominant in the DSTD.At the sec ond hierarchical level,the physica l attraction subsystem rank No.1,while the weight of the non-physical attraction subsystem is just a little larger t han the weight of the hardware subsystem and that of software subsystem.And the weights of the three components in the medium subsystem are similar.The top 3factors at the third hierarchical level are scenic spot,location and regional econ omic impact.The result verifies the conclusions of qualitative analysis,which depends on the market research and the study of historical date,that the most imp ortant compo-nent of the DSTD in Foshan is the impact of the developed economy.Knowing t he weight of each component of the DST D can be helpful to make out the most use ful force,furthermore to determine the future orientation for regional tourismdevelop-ment.
基金Supported by Project of Shanghai Municipal Science and Technology Commission“Research and Demonstration of Ricefield Eel Ecological Breeding Technology based on Rice-eel Farming System(15391912200)”
文摘[Objective]The paper was to develop new fodder additives and to strengthen comprehensive utilization of Spartina alterniflora resources.[Method]The effects of biomineral liquid from S.alterniflora on growth,nutritional components of ricefield eels were studied.[Result]（1）0.5%of biomineral liquid had significant effect on weight gain rate,which was 8.37%higher than that in control group（P〈0.01）.Further supply of biomineral liquid could not increase the weight gain rate.Furthermore,biomineral liquid had no effect on the survival rate of ricefield eels.（2）Ricefield eels had certain changes in body color in the0.5%biomineral liquid group,and some ricefield eels were yellowing.（3）The contents of Cr,Fe,Zn in body of ricefield eels in treatment group were significantly higher than that in control group,but was lower than that in wild eel group,and the content of Se in treatment group was lower than that in control group and wild group（P〈0.01）.（4）The contents of K,Mg in muscle of ricefield eels in treatment group were higher than those in control group and wild eel group.The contents of ash and Ca in treatment group were close to that in control group but were higher than that in wild eel group.The content of crude fat in treatment group was close to that in wild eel group but was lower than that in control group.The contents of Zn,Se,Ni in treatment group were higher than that in control group and wild eel group,and the contents of Cr,Fe,Cu were close to that in control group and were higher than that in wild eel group（P〈0.01）.No significant differences were observed in the contents of moisture,crude fat and P among the three groups（P〉0.05）.[Conclusion]Addition of biomineral liquid from S.alterniflora could speed up the growth of ricefield eels and significantly improve their flesh quality,but had no significant effect on survival rate of ricefield eels.
文摘The aim of this work is to describe and compare three exploratory chemometrical tools,principal components analysis,independent components analysis and common components analysis,the last one being a modification of the multi-block statistical method known as common components and specific weights analysis.The three methods were applied to a set of data to show the differences and similarities of the results obtained,highlighting their complementarity.
