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The NHD is part of the United States Geological Survey The National Map for the United States. The NHD is also linked with similar datasets representing the surface water for Canada and Mexico. The dataset primarily maps features a 1:24,000-scale, but in certain areas provides detail at 1:5,000-scale.
The Hydrologic Evaluation of Landfill Performance (HELP) model is a quasi-two-dimensional hydrologic numerical model for conducting water balance analysis of landfills, cover systems, and other solid waste containment facilities; it was developed for the United States Environmental Protection Agency.
Interpreting the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA), the U.S. courts have held that a buyer, lessor, or lender may be held responsible for remediation of hazardous substance residues, even if a prior owner caused the contamination; performance of a Phase I Environmental Site Assessment ...
NHD may refer to: National History Day, US; National Hydrography Dataset, US; Networked Help Desk; New Hacker's Dictionary, of computer slang; Noordhollands Dagblad ...
It has been found that small businesses created the newest jobs in communities, "In 1979, David Birch published the first empirical evidence that small firms (fewer than 100 employees) created the newest jobs", and Edmiston claimed that "perhaps the greatest generator of interest in entrepreneurship and small business is the widely held belief ...
Example: Agricultural products which have many buyers and sellers, selling homogeneous goods where the price is determined by the demand and supply of the market and not individual firms. In the short run, a firm in a perfectly competitive market may gain profits or loss, but in the long run, due to the entry and exit of new firms, price will ...
Furthermore, each firm shares a small percentage of the total monopolistic market and hence, has limited control over the prevailing market price. Thus, each firms' demand curve (unlike perfect competition) is downward sloping, rather than flat. The main difference between monopoly competition and perfect competition lies in the paradox of ...
Firms with valuable and rare resources, which are hard to imitate by other firms, can gain the first-mover advantages in the market and can hence gain competitive advantage. A firm can either exploit an external opportunity or neutralize an external threat by using rare and valuable resources.