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| Registros recuperados: 31.147 | |
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| C. E. Timothy Paine; Toby Marthews; Deborah Vogt; Drew Purves; Mark Rees; Andy Hector; Lindsay Turnbull. |
| Plant growth is an essential ecological process, integrating across scales from physiology to community dynamics. Predicting the growth of plants is essential to understand a wide range of ecological issues, including competition, plant-herbivore interactions and ecosystem functioning.
A challenge in modeling plant growth is that growth rates almost universally decrease with increasing size, for a variety of reasons. Traditional analyses of growth are hampered by the need to remain within the structures of linear models, which handle this slowing poorly. We demonstrate the implementation of a variety of non-linear models that are more appropriate for modeling plant growth than are the traditional, linear,... |
| Tipo: Presentation |
Palavras-chave: Ecology; Plant Biology. |
| Ano: 2010 |
URL: http://precedings.nature.com/documents/5257/version/1 |
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| Tee, James; Scarpa, Riccardo; Marsh, Dan; Guthrie, Graeme. |
| NPV and LEV are established and common approaches to valuing single rotation and infinite rotation forests respectively, when the rotation age is fixed in advanced. More recently, Real Options approaches have been employed to value single and infinite rotation forests with a flexible harvest age. Under a stochastic timber price process, it has been shown that the valuation of a flexible rotation forest is equal or higher than that of a fixed rotation forest, because a flexible harvest regime delays the harvest if the timber price is not favourable, whereas a fixed harvest regime would proceed to harvest regardless of the price. Often, valuation of fixed and flexible rotation ages are compared using 2 different methods – NPV (or LEV) and Real Options. The... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: NPV; LEV; Real Options; Optimal Harvest Decision; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use. |
| Ano: 2010 |
URL: http://purl.umn.edu/96836 |
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| Raveau, Adriana; Macher, Claire; Mehault, Sonia; Merzereaud, Mathieu; Le Grand, Christelle; Guyader, Olivier; Bertignac, Michel; Fifas, Spyros; Guillen Garcia, Jordi. |
| Several fleets with various fishing strategies operate as a mixed fishery in the Bay of Biscay. Among the main fleets, bottom trawlers target Norway lobster (Nephrops norvegicus) and, together with gillnetters, they also catch hake (Merluccius merluccius). Trawling leads to average-size catches that are below the minimum landing size (MLS); such catches are discarded since they cannot be sold. These discards result in negative impacts on stock renewal, as most of them do not survive. This also results in an economic loss for both bottom trawlers and gillnetters since these discards represent a future loss of rent. This study, based on the 2009 and 2010 selectivity experiments at sea, assesses the short- and long-term... |
| Tipo: Text |
Palavras-chave: Demersal trawl fishery; Bio-economic analysis; Selectivity; Simulation; Selective device; Nephrops norvegicus; Merluccius merluccius; Atlantic Ocean. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00110/22135/19774.pdf |
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| Ghose, Ananda; Hawkins, Chris. |
| American foulbrood (AFB) is considered the most significant brood disease of bees in Western Australia. The Department of Agriculture of Western Australia (DAWA) provides assistance to apiarists by way of quarantine and surveillance measures under the AFB control program. A bio-economic evaluation was considered necessary by the department for setting future policy direction. As a way forward, a number of risk analysis scenarios were simulated to estimate the future prevalence rate of AFB in the absence of the present program. This epidemiological investigation was complemented by an economic evaluation which identifies the extent of benefit that flows through to direct beneficiaries. The paper provides a comprehensive bio-economic analysis and suggests... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/58449 |
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| Korom, Agoston. |
| Megkülönböztetve egymástól a KAP és a birtokpolitikára vonatkozó közösségi jogi rendelkezéseket, arra a következtetésre jutok, hogy túlzás, illetve nem helytálló Tanka Endre megállapítása, mely szerint az uniós jog a birtokpolitikában „maga a politika”, „a tagállami jogalkotás annak végrehajtására szűkül”, és a birtokpolitikában a közösségi jog „a belső jogot csaknem kiszorítja”, hiszen a tagállam dönthet úgy, hogy semmilyen korlátozást nem léptet életbe a földpiacon, valamint a közösségi joggal összeegyeztetett igen szigorú, Tanka Endre szavaival élve értékalapú birtokpolitikát, polgári demokratikus földreformot is bevezethet. Alapelv szerint a birtokpolitikában a tőke szabad mozgásának korlátozása tilos – minden tagállam esetében –, de az Európai... |
| Tipo: Journal Article |
Palavras-chave: Kettős jogalap; Külföldiek tulajdonszerzése; Hatósági engedélyezés; Moratórium; Mozgástér; Dual legal basis; Land ownership of foreigners; Official permit procedures; Moratorium; Room to maneuver; Agricultural and Food Policy; Land Economics/Use. |
| Ano: 2010 |
URL: http://purl.umn.edu/99131 |
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| Pashaei,Shahyar. |
| Plastination is a process of preservation of anatomical specimens by a delicate method of forced impregnation with curable polymers like silicone, epoxy or polyester resins with vast applications in medical fields of study. Plastination is a technique of tissue preservation developed by Dr. Gunther von Hagens in 1977. In this process, water and lipids in biological tissues are replaced by curable polymers (silicone, epoxy, polyester) which are hardened, resulting in dry, odorless and durable specimens. In this technique it is possible for us to treat every part of the body and tissues to preserve it for educational purposes. Nowadays there are new and vast varieties of applications for plastination in the educational and cultural areas. This invention has... |
| Tipo: Journal article |
Palavras-chave: Plastination; Impregnation. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400014 |
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| Registros recuperados: 31.147 | |
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