Deforestation caused bythe felling of trees for firewood is a major cause of environmental degradation in some villages in Luchun Counth,Yunnan Province.This is of particular concem in the headwaters ofmajor rivers su...Deforestation caused bythe felling of trees for firewood is a major cause of environmental degradation in some villages in Luchun Counth,Yunnan Province.This is of particular concem in the headwaters ofmajor rivers such as the Black River where increased runoff,erosion,and sediment yield impact on the millions of persons living downstream.While the links between forest clearance,the ability ofthe land to sustain production,and the sustainability of communities are understood,the pressures of having to survive today often outweigh consideration of the consequences for tomorrow.The real challenge for these communities is that they recognise their situation and negotiate a practical solution rather than walt the intervention and support.It is essential therefore that the changes which have taken place are documented and their future impact illustrated.This information must then be portrayed in a manner that makes it accessible and comprehensible to all,even to those who are illiterate.For this reason the use of graphics offers considerable merit over textual and numerical analyses.This paper explores the use of MIGIS (an acronym for community based planning which integrates the techniques of PLA and GIS) to facilitate a negotiated,bottorn-up approach to afforestation with the Hani farmers of Luchun County,Yunnan in southwest China.展开更多
It was widely recognized that rural development especially rural development in the poor areas is closely related with environment issue. It is also common bias that farmers in the poor areas lack of environmental awa...It was widely recognized that rural development especially rural development in the poor areas is closely related with environment issue. It is also common bias that farmers in the poor areas lack of environmental awareness, and their production activities directly cause the environment degradation. The study has shown that with appropriate outside facilitation. a poor rural community can not only analyze its environmental problem, but can also make feasible planning to recover the problem.展开更多
This paper explores a highly accurate identification modeling approach for the ship maneuvering motion with fullscale trial. A multi-innovation gradient iterative(MIGI) approach is proposed to optimize the distance me...This paper explores a highly accurate identification modeling approach for the ship maneuvering motion with fullscale trial. A multi-innovation gradient iterative(MIGI) approach is proposed to optimize the distance metric of locally weighted learning(LWL), and a novel non-parametric modeling technique is developed for a nonlinear ship maneuvering system. This proposed method’s advantages are as follows: first, it can avoid the unmodeled dynamics and multicollinearity inherent to the conventional parametric model; second, it eliminates the over-learning or underlearning and obtains the optimal distance metric; and third, the MIGI is not sensitive to the initial parameter value and requires less time during the training phase. These advantages result in a highly accurate mathematical modeling technique that can be conveniently implemented in applications. To verify the characteristics of this mathematical model, two examples are used as the model platforms to study the ship maneuvering.展开更多
文摘Deforestation caused bythe felling of trees for firewood is a major cause of environmental degradation in some villages in Luchun Counth,Yunnan Province.This is of particular concem in the headwaters ofmajor rivers such as the Black River where increased runoff,erosion,and sediment yield impact on the millions of persons living downstream.While the links between forest clearance,the ability ofthe land to sustain production,and the sustainability of communities are understood,the pressures of having to survive today often outweigh consideration of the consequences for tomorrow.The real challenge for these communities is that they recognise their situation and negotiate a practical solution rather than walt the intervention and support.It is essential therefore that the changes which have taken place are documented and their future impact illustrated.This information must then be portrayed in a manner that makes it accessible and comprehensible to all,even to those who are illiterate.For this reason the use of graphics offers considerable merit over textual and numerical analyses.This paper explores the use of MIGIS (an acronym for community based planning which integrates the techniques of PLA and GIS) to facilitate a negotiated,bottorn-up approach to afforestation with the Hani farmers of Luchun County,Yunnan in southwest China.
基金The Project entitled "A Feasibility Study to Strengthen Participatory Planning Capacity by MIGIS" supported by Asian Development
文摘It was widely recognized that rural development especially rural development in the poor areas is closely related with environment issue. It is also common bias that farmers in the poor areas lack of environmental awareness, and their production activities directly cause the environment degradation. The study has shown that with appropriate outside facilitation. a poor rural community can not only analyze its environmental problem, but can also make feasible planning to recover the problem.
基金financially supported in part by the National High Technology Research and Development Program of China(863Program,Grant No.2015AA016404)the National Natural Science Foundation of China(Grant Nos.51109020,51179019 and 51779029)the Fundamental Research Program for Key Laboratory of the Education Department of Liaoning Province(Grant No.LZ2015006)
文摘This paper explores a highly accurate identification modeling approach for the ship maneuvering motion with fullscale trial. A multi-innovation gradient iterative(MIGI) approach is proposed to optimize the distance metric of locally weighted learning(LWL), and a novel non-parametric modeling technique is developed for a nonlinear ship maneuvering system. This proposed method’s advantages are as follows: first, it can avoid the unmodeled dynamics and multicollinearity inherent to the conventional parametric model; second, it eliminates the over-learning or underlearning and obtains the optimal distance metric; and third, the MIGI is not sensitive to the initial parameter value and requires less time during the training phase. These advantages result in a highly accurate mathematical modeling technique that can be conveniently implemented in applications. To verify the characteristics of this mathematical model, two examples are used as the model platforms to study the ship maneuvering.
