缩减了
发表于 2025-3-30 09:45:25
On the Development of a Substitute for an Exhaustible Natural Resource physical capital and to undertake research-and-development expenditures designed to improve the quality or reduce the production cost of the substitutes. What then are the socially optimal trajectories of resource-extraction, of output of the substitutes, and of investment in equipment and in resea
排出
发表于 2025-3-30 13:02:05
Extraction and Recycling of Depletable Natural Resourcesminent position since it promises to contribute to a solution of three resource problems: First, it economizes on the reserves of the recycled material under consideration; second, it may be less energy intensive than virgin material production (extraction) and third, it may, in addition, reduce env
确定方向
发表于 2025-3-30 20:08:54
A Note on Resource Use, Substitute Production, and Governmental Intervention and by . , the effects of such interventions on the intertemporal allocation of an exhaustible nonrenewable resource have not been examined in the literature. Furthermore, the analysis has been restricted to the pure theory of exhaustion, where there is no substitute for the resource.
一骂死割除
发表于 2025-3-31 00:22:01
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走调
发表于 2025-3-31 01:35:28
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Mercurial
发表于 2025-3-31 07:01:20
Analysis of Marine Fishery Systems Based on Commercial Catch and Effort Data. A good understanding and appropriate modeling of the dynamic interaction between the fishery resource itself, the fleet of boats operating on the resource, and the catches resulting from fishing operations is of crucial importance in any attempt to control a fishery in an effective way.
febrile
发表于 2025-3-31 12:35:24
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Narrative
发表于 2025-3-31 16:40:58
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