profit maximazation Another use is similar to the organization, which can be used to refer to companies, schools, social groups and even government agencies. After a usage mainly appears in the information technology application in the field of some proper nouns, such as enterprise application (enterprise applications), enterprise computing (enterprise computing), enterprise integration, enterprise integration), enterprise engineering (engineering) enterprise, the enterprise architecture (enterprise architecture), enterprise modeling (enterprise modeling), and so on. In the light of monetary crisis 2007 - 2010, many companies have had to trim their spending. Meanwhile, in the earlier years, they donated immeasureable dollars. Although there remained many big corporations which still gave away billions to charity within the global slowdown, others slimmed down their funds donations. In 2009, many company gained bigger profits, but this would not translate into bigger donations. Tough economic times can't prevent America's largest business from continuing giving in 2009. 30% of the large corporations gave more cash, and 16% gave a comparable because the year before. In general, total of 68 companies gave less during 2009 than 2008. Cash and product giving combined fell the first time for recent seven years. The following is a summary of companies which gave most during 2009. They were measured by comparing total giving in cash and products during 2009 to total profits in the year before. It includes garbage trucks, refrigerated truck trucks, dump trucks carrying sand, concrete transporters, tankers, as well as trailers, semi-trailers, container trucks, etc. First, choose a trading option. Trading options are eclectic, consulting, researching, or following acquaintances, all of which are ways to select specific trading items. Which method is better because of the difference between man and man. Of course, there are some basic references. For example, the method of trading selection should be based on theory. If some of the basic concepts contained in some method are unreasonable, then this method is undesirable. Second, trading options should tell traders to capture market signals. In the end, this approach should provide some sort of realistic approach to trading people out of trading, rather than cajole traders into doing some sort of trade with their capital. Having determined the sequence that work well is usually to be tackled in, some operations have to have a detailed timetable showing at what time or date jobs should start so when they must end ' this really is scheduling. Schedules are familiar statements of volume and timing in several consumer environments. For example, a bus schedule demonstrates more buses are put on routes at more frequent intervals during rush-hour periods. The bus schedule shows enough time each bus is because of go to each stage in the route. Schedules of training are widely-used in operations where some planning must be sure that customer demand is met. Other operations, including rapid-response service operations where customers arrive in an unplanned way, cannot schedule the operation in the short-term sense. They can only respond at some time demand is positioned upon them. The scheduling activity is one in the most complex tasks in operations management. First, schedulers must deal with several unique kinds of resource simultaneously. Machines will have different capabilities and capacities; staff can have different skills. More importantly, the quantity of possible schedules increases rapidly as the number of activities and processes increases.