By Daniel Inman

Japanese stocks continued to be weighed down by a strong yen on Tuesday, while shares in Sydney were slightly lower before the Reserve Bank of Australia's policy meeting.

Australia's S&P/ASX 200 dropped 0.1% before the Reserve Bank of Australia's rate decision, due to be announced later Tuesday.

Expectations for lower interest rates are high, with all 15 economists surveyed by The Wall Street Journal forecasting a rate cut. A quarter of a percentage-point reduction in rates would bring the cost of borrowing to a record low of 2.5%.

The central bank has already slashed interest rates seven times since late 2011, as a weakening mining sector has prompted policy makers to use monetary policy to support growth in other parts of the economy.

The Australian dollar (AUDUSD), which hit a three-year low against its U.S. counterpart on Monday, was steady before the announcement.

The U.S. dollar weakened against the yen (USDJPY) on Tuesday, putting pressure on stocks in Tokyo. The greenback was at Yen98.05, compared with Yen98.30 late Monday in New York. The Nikkei Average dropped 1.1%

"The summer doldrums are upon us, with participation levels low and trading incentives -- aside from earnings-related news -- relatively few," said Hiroichi Nishi, general manager of equities at SMBC Nikko Securities.

Mitsubishi Materials Corp. rose 2.6% in Tokyo after the Nikkei reported that its group operating profit for the first quarter is believed to have risen more than 30% on year to about Yen15 billion ($153 million), driven by an improvement in its copper segment and a weaker yen.

Also in Tokyo, Toshiba Corp. (TOSYY) outperformed the broader market, down just 0.5% after a separate Nikkei report said that the company plans to build a NAND flash-memory factory in a joint venture with SanDisk (SNDK), with the total investment estimated to be Yen400 billion.

South Korea's Kospi fell 0.7%.

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