نتایج جستجو برای: economic tree

تعداد نتایج: 482077  

Journal: :international journal of advanced biological and biomedical research 2014
einollah rouhi moghaddam

objective: ecosystems with mixed species compared to the ones with pure compositions provide a broader range of options in the fields of biodiversity, conservation, protection and restoration. nearly all forest plantations are established as monocultures, but research has shown that there are potential advantages to be gained by using carefully designed species mixtures in place of monocultures...

2016

President Obama has discovered first-hand how difficult wrangling the interests of a dozen nations can be. For six years, the Trans-Pacific Partnership (TPP) has been in negotiations and might prove to be Obama’s crowning foreign policy achievement. If the 12-nation Free Trade Agreement (FTA) passes, it will shape the future of economic development in the Asia-Pacific and cement the U.S. as the...

Abstract: Knowing the tree species combination of forests provides valuable information for studying the forest’s economic value, fire risk assessment, biodiversity monitoring, and wildlife habitat improvement. Fieldwork is often time-consuming and labor-required, free satellite data are available in coarse resolution and the use of manned aircraft is relatively costly. Recently, unmanned aeria...

2003
Paul A. Johnson Lisa N. Takeyama

This paper attempts to ascertain which of the convergence hypotheses – absolute, conditional, or club – best describes the economic development of the U.S. states since 1950. We use regression tree analysis to identify convergence clubs among the states and argue that the club characterization of the data dominates the other two. We find three convergence clubs with a state's age and it's initi...

Journal: :IJORIS 2011
R. P. Tripathi

In this paper the authors consider the continuous deterministic, infinite horizon, single item inventory system within the setting of a retailer sector in which the demand rate for an item is time dependent. The parameter of the replenishment cost is kept constant, but the carrying cost per unit is allowed to vary. The optimal policies are found, and decision rules and classical EOQ model have ...

2014
Mariana Mazzucato RM Phillips

Many western countries are pursuing innovation-led ‘smart’ growth so to rebalance away from consumer debt driven growth and ‘financialization’. This paper argues that innovation-led growth is a major battle that requires public policy to fundamentally change from one that views the goal of government as simply fixing markets to one that views it in terms of actively creating and shaping markets...

2015
Siqi Zheng Weizeng Sun Jianfeng Wu Matthew E. Kahn

Several Chinese cities have invested billions of dollars to construct new industrial parks. These place based investments solve the land assembly problem which allows many productive firms to co-locate close to each other. The resulting local economic growth creates new opportunities for real estate developers and retailers that develop properties and stores close to the new park. The city mayo...

2016
Ana B. Ania

Schaffer [Schaffer, M.E., 1988. Evolutionarily stable strategies for a finite population and a variable contest size. Journal of Theoretical Biololgy 132, 469–478] proposed a concept of evolutionary stability for finite-population models that has interesting implications in economic models of evolutionary learning, since it is related to perfectly competitive equilibrium. The present paper expl...

2014
Chuan Sun Hao Jiao Yun Ren Marc A. Rosen

Research opinion on informatization is divided between two opposite poles—that it promotes or inhibits the spillover of regional economies. These conflicting viewpoints are called “the paradoxical geographies of the digital economy”. Information-based investment and diffusion of informatization contribute to breaking the economic space constraints caused by distance, leading to interregional sp...

Journal: :European Journal of Operational Research 2008
Zhou-Jing Wang Kevin W. Li Jason K. Levy

Increasing fuel costs, post-911 security concerns, and economic globalization provide a strong incentive for container carriers to use available container space more efficiently, thereby minimizing the number of container trips and reducing socio-economic vulnerability. A heuristic algorithm based on a tertiary tree model is proposed to handle the container loading problem (CLP) with weakly het...

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