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02:12Short-distance Transport of Resources
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
01:25Secondary Distribution
Secondary distribution systems provide electrical energy at the utilization voltage levels from distribution transformers to customer meters. Typical secondary voltages in the United States include 120/240 V for residential use, 208Y/120 V for residential and commercial use, and 480Y/277 V for industrial and high-rise commercial use.
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
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Corrigendum to "The role of technical protocols and partnership engagement in developing a decision support framework for fisheries management" [J. Environ. Manag. 223 (2018) 503-516].
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Managing fleet capacity effectively under second-hand market redistribution.
Emmanuelle Quillérou1, Nolwenn Roudaut, Olivier Guyader
1United Nations University Institute for Water, Environment and Health (UNU-INWEH), United Nations University, 175 Longwood Road South, Suite 204, Hamilton, ON, L8P 0A1, Canada. emmanuelle_quillerou@yahoo.fr
Ambio
|January 5, 2013
Summary
Second-hand fishing vessel trade redistributes capacity, potentially undermining regional management policies. Effective fishing capacity management requires considering capital mobility across French fisheries.
Area of Science:
- Fisheries science
- Maritime economics
- Spatial analysis
Background:
- Fishing capacity management traditionally uses national targets.
- Recent policies increasingly focus on specific fisheries.
- Regional capacity management overlooks second-hand vessel trade mobility.
Purpose of the Study:
- Analyze determinants and spatial extent of the French second-hand fishing vessel market.
- Assess the impact of this market on regional capacity management effectiveness.
Main Methods:
- Utilized a gravity model and random-effect Poisson regression.
- Analyzed panel data from the French Atlantic Ocean (1992-2009).
Main Results:
- Second-hand trade flows increase with partner region size and are spatially concentrated.
- Despite low overall trade, capacity shifts to Channel and Aquitaine regions.
- National policies reduced regional fleet capacity, but second-hand market effects vary.
Conclusions:
- The second-hand market redistributes fishing capacity, impacting regional management.
- Current regional policies may be less effective in Channel and Aquitaine due to this redistribution.
- Policy instruments or implementation scale need adjustment to account for capital mobility.