There are abundant water power resources in the Yalong River which are suitable for the large hydroelectric engineering. But a reliability study should be made for the valley which liable to frequent earthquakes. The ...There are abundant water power resources in the Yalong River which are suitable for the large hydroelectric engineering. But a reliability study should be made for the valley which liable to frequent earthquakes. The color infrared aerophotos, multi-spectral photography and thermal infrared scanning had been specially done besides MSS image, processing. Researches on remote sensing applications to engineering geology, hydrogeology, deformation of neo-tectonics, Iandslide, mud-rock flow, ecological environment and geographical information system had been carried out by more than 20 research units.展开更多
多Agent系统中(MAS),所有的Agent都在不断学习,对于单个Agent来说就是一个学习移动目标的问题.PHC(policy hill climb)算法理性但自博弈时并不收敛.不过,PHC自博弈时的平均策略却能够快速且精确地收敛到纳什均衡(NE).在一些需要NE作为...多Agent系统中(MAS),所有的Agent都在不断学习,对于单个Agent来说就是一个学习移动目标的问题.PHC(policy hill climb)算法理性但自博弈时并不收敛.不过,PHC自博弈时的平均策略却能够快速且精确地收敛到纳什均衡(NE).在一些需要NE作为先验知识或需要收敛到NE的算法中,可以通过增加一个PHC自博弈过程来估计NE,然后再根据对手策略采取进一步措施.这样,不仅可以避免使用其他算法计算NE,而且能够使学习者至少获得均衡回报.Exploiter-PHC算法(Exploiter算法)能够击败大多数公平对手但需要NE作为先验知识,且自博弈时也不收敛.在其中加入预检测过程后的算法ExploiterWT(exploiter with testing)能够收敛且不需要先验知识.除此之外,该过程也可以加入其他一些算法之中.展开更多
Bayan Obo deposit in Inner Mongolia,China is not only the largest Iron-LREE-niobium deposit known in the world but also a giant fluorite deposit.Banded and streaky fluorite-rich REE-iron ores,bastnasiteapatite -pyroxe...Bayan Obo deposit in Inner Mongolia,China is not only the largest Iron-LREE-niobium deposit known in the world but also a giant fluorite deposit.Banded and streaky fluorite-rich REE-iron ores,bastnasiteapatite -pyroxene-fluorite ores,high-Fe,REEs,and fluorite ores,monazite(bastnaesite)-fluorite(low-Fe, high REE) ores etc.are widely disseminated in the Main and the East ore bodies.In 1985,proven展开更多
The marine pollution and environmental degradation have taken a turn for the worse at astonishing speed along with the social and economical developments, especially in the recent years, owing to the intensification o...The marine pollution and environmental degradation have taken a turn for the worse at astonishing speed along with the social and economical developments, especially in the recent years, owing to the intensification of industrial modernization and marine exploitation. The protection of the marine environment has been an (?) rtant task, which attracts attention of the governments and the people in the world in 1992, the protection of the marine envi-展开更多
The Turonian aquifer of the Tadla’s basin shows at present a pronounced reduction of its hydraulic potential linked to overexploitation and deficiency of effective rains.In order to make an evaluation of the resource...The Turonian aquifer of the Tadla’s basin shows at present a pronounced reduction of its hydraulic potential linked to overexploitation and deficiency of effective rains.In order to make an evaluation of the resources of water and implant the exploitation’s drillings of groundwater,a geophysical study by展开更多
This article analyzes the importance of non use values in the management of natural resources with a model of imperfect competition.By constucting a framework of duopolistic exploiters,the incorporation of non use v...This article analyzes the importance of non use values in the management of natural resources with a model of imperfect competition.By constucting a framework of duopolistic exploiters,the incorporation of non use values based on self interest and altruistic motives appears to be significant for determining the degree of inefficiency caused by the problem of common property at the non cooperative Nash equilibrium.It is found that when the non use value placed by the altruist exploiter is bounded by that placed by the pure self interest exploiter,the effect of market power is dominated by the effect of common exploitation.In this case,the exploiters' harvesting strategy will response in the same direction to the change of each other's harvesting at the non cooperative Nash equilibrium.In contrast,when the non use value placed by the altruist is substantially larger or smaller than that placed by the self interest exploiter,one exploiter's increase in harvesting will lead to a decrease in harvesting of the other exploiter at the non cooperative Nash equilibrium.展开更多
Rose is a kind of favorite ornamental plant. This article briefly introduced the cultivation and the use of rose around the world both in ancient time and nowadays. Today, volatile oil becomes the mainstream of the ro...Rose is a kind of favorite ornamental plant. This article briefly introduced the cultivation and the use of rose around the world both in ancient time and nowadays. Today, volatile oil becomes the mainstream of the rose industry. People pay attention to the effect of volatile oil; meanwhile, they speed up their research on extracting volatile oil and the ingredients.展开更多
This paper formulated the present characteristics, current status and the problems of agricultural natural China. Measures of preservation and strategy about exploitation of agricultural natural resources were put for...This paper formulated the present characteristics, current status and the problems of agricultural natural China. Measures of preservation and strategy about exploitation of agricultural natural resources were put forward, provide a scientific basis for the government to make policies .展开更多
文摘There are abundant water power resources in the Yalong River which are suitable for the large hydroelectric engineering. But a reliability study should be made for the valley which liable to frequent earthquakes. The color infrared aerophotos, multi-spectral photography and thermal infrared scanning had been specially done besides MSS image, processing. Researches on remote sensing applications to engineering geology, hydrogeology, deformation of neo-tectonics, Iandslide, mud-rock flow, ecological environment and geographical information system had been carried out by more than 20 research units.
文摘多Agent系统中(MAS),所有的Agent都在不断学习,对于单个Agent来说就是一个学习移动目标的问题.PHC(policy hill climb)算法理性但自博弈时并不收敛.不过,PHC自博弈时的平均策略却能够快速且精确地收敛到纳什均衡(NE).在一些需要NE作为先验知识或需要收敛到NE的算法中,可以通过增加一个PHC自博弈过程来估计NE,然后再根据对手策略采取进一步措施.这样,不仅可以避免使用其他算法计算NE,而且能够使学习者至少获得均衡回报.Exploiter-PHC算法(Exploiter算法)能够击败大多数公平对手但需要NE作为先验知识,且自博弈时也不收敛.在其中加入预检测过程后的算法ExploiterWT(exploiter with testing)能够收敛且不需要先验知识.除此之外,该过程也可以加入其他一些算法之中.
文摘Bayan Obo deposit in Inner Mongolia,China is not only the largest Iron-LREE-niobium deposit known in the world but also a giant fluorite deposit.Banded and streaky fluorite-rich REE-iron ores,bastnasiteapatite -pyroxene-fluorite ores,high-Fe,REEs,and fluorite ores,monazite(bastnaesite)-fluorite(low-Fe, high REE) ores etc.are widely disseminated in the Main and the East ore bodies.In 1985,proven
文摘The marine pollution and environmental degradation have taken a turn for the worse at astonishing speed along with the social and economical developments, especially in the recent years, owing to the intensification of industrial modernization and marine exploitation. The protection of the marine environment has been an (?) rtant task, which attracts attention of the governments and the people in the world in 1992, the protection of the marine envi-
文摘The Turonian aquifer of the Tadla’s basin shows at present a pronounced reduction of its hydraulic potential linked to overexploitation and deficiency of effective rains.In order to make an evaluation of the resources of water and implant the exploitation’s drillings of groundwater,a geophysical study by
文摘This article analyzes the importance of non use values in the management of natural resources with a model of imperfect competition.By constucting a framework of duopolistic exploiters,the incorporation of non use values based on self interest and altruistic motives appears to be significant for determining the degree of inefficiency caused by the problem of common property at the non cooperative Nash equilibrium.It is found that when the non use value placed by the altruist exploiter is bounded by that placed by the pure self interest exploiter,the effect of market power is dominated by the effect of common exploitation.In this case,the exploiters' harvesting strategy will response in the same direction to the change of each other's harvesting at the non cooperative Nash equilibrium.In contrast,when the non use value placed by the altruist is substantially larger or smaller than that placed by the self interest exploiter,one exploiter's increase in harvesting will lead to a decrease in harvesting of the other exploiter at the non cooperative Nash equilibrium.
文摘Rose is a kind of favorite ornamental plant. This article briefly introduced the cultivation and the use of rose around the world both in ancient time and nowadays. Today, volatile oil becomes the mainstream of the rose industry. People pay attention to the effect of volatile oil; meanwhile, they speed up their research on extracting volatile oil and the ingredients.
文摘This paper formulated the present characteristics, current status and the problems of agricultural natural China. Measures of preservation and strategy about exploitation of agricultural natural resources were put forward, provide a scientific basis for the government to make policies .
