## Профессиональный репетитор по математике и экономике. Выполнение контрольных работ - учитель математики, английского языка и экономики - English, Math - Алексей Эдуардович Султанов  - Репетитор МГЛУ и МФТИ - Марьино - скайп - Москва. Пример запроса уроков и выполнения курсовой работы:

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Эластичность спроса и предложения и ее значение для развития бизнеса?
Нужна работа, написанная своими словами, но научно, чтобы прошла систему антиплагиата.
Цена работы, сроки выполнения какие?
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## The problem describes the pollution problems of an artificial river basin.

Kaisa Miettinen

A cannery and two cities pollute the river and a park is located between the cities.
The water quality is measured by dissolved oxygen (DO) concentration.
The cannery and the cities already reduce the waste content but new treatment facilities are needed.
However, their costs will reduce the investment return from the cannery and increase the tax rate in the cities.
The three decision variables represent the treatment levels of waste discharge at the cannery and in the cities,
and the nonlinear constraint restricts the DO level at the end of the river.

The first and the third objective functions describe the DO concentration in the cities and the second objective in the park whereas the fourth objective represents the percent return on investment at the cannery. The addition to the tax rate in the cities is modeled as the fifth and the sixth objective, respectively, and the last objective keeps the capacities of the new treatment facilities as close to their optimal level as possible. Note that the last three objective functions were originally to be minimized and their signs have here been changed.

In Miettinen and Mäkelä, 2009, the general preferences of the DM are described as follows.
The DO level in the cities and in the park should be at least 6.0 mg/l, the rate of return on investment at the cannery should be above 6.5%, the tax rates in the cities should be below \$1.5/\$1000 of assessed valuation, and the capacities of the new treatment facilities should be at most 20% from the optimal level. Note that the goals are not necessarily attainable simultaneously. The ideal point is here (6.34,6.79,6.60,7.50,0.00, -0.96,-0.16). Next we solve the problem following the preferences and choices expressed in the reference.

Переводы на английский и с английского языка. Индивидуальное обучение английскому языку методом «погружения». Немецкий язык для взрослых. Окончил МГЛУ им. М. Тореза, работаю переводчиком.

## Репетиторы - Частные уроки - Москва

Подготовка к работе в инноцентре Сколково - Решение задач студентам. Контрольные; курсовые. (495) 345 20 61
Преподаватель математики и физики, английского - репетитор по математике, английскому языку и физике. Подготовка к ЕГЭ 2011 - части В и С.

Following the reference, we start the solution process from the feasible point (0.41,0.45,1.00) and the corresponding objective vector
z1
=(5.00, 2.55, 5.29, 7.44, - 0.12, - 11.37, -0.35). Here, for example, the tax rate in the second city is far too high and the DO concentration in the park is unsatisfactory. We use the aspiration levels specified as a basis for the first reference point. However, because the value of the fourth objective function is so good, we do not want to relax it too much and set the corresponding aspiration level as -7.0. Thus, the first reference point is fr = (6.00,6.00,6.00,7.00,-1.50,- 1.50,-0.20). We ask for five candidate solutions (i.e. N=5) in order to learn about the behavior of the problem.