1.
Communication Theory. Communication
theory deals primarily with systems for transmitting information or
data form one point to another. A rather general block diagram for
visualizing the behavior of such systems is given in Fig. 4.1. The
source output might represent, for example, a voice waveform, a
sequence of binary digits form a magnetic tape, the output of a set
of sensors in a space probe, a sensory input to a biological
organism, or a target in a radar system.
Содержание
Аннотация
Выбор основного
оборудования
и описание
принятой компоновки
станции
Принципиальная
тепловая схема
блока и расчет
ее на заданный
режим
LUNG
CANCER
Up
to the time of World War II, cancer of the lung was a relatively rare
condition. The increase in its incidence in Europe after
World
War II was at first ascribed to better diagnostic methods, but by
1956 it had become clear that the rate of increase was
too
great to be accounted for in this way. At that time the first
epidemiological studies began to indicate that a long history of
cigarette
smoking was associated with a great increase in risk of death from
lung cancer.
ТРЕБОВАНИЯ
К УСТРОЙСТВАМ
АВР, ПРИНЦИПЫ
ИХ ВЫПОЛНЕНИЯ
И РАСЧЕТ ПАРАМЕТРОВ Требования
к устройствам
АВР. В системах
электроснабжения
при наличии
двух (и более)
источников
питания часто
целесообразно
работать по
разомкнутой
схеме. При этом
все источники
включены, но
не связаны
между собой,
каждый из них
обеспечивает
питание выделенных
потребителей.
