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Can someone explain what rules for が come in play that make the sentence:

> 発売延期となっていたネットワークレコーダー「nasne(ナスネ)」の発売が8月30日に決定しました

grammatically correct? I would have formulated it
`「nasne(ナスネ)」の発売が8月30日に決定されました`, or to keep the usage of しました-form:
`ソニーは「nasne(ナスネ)」の発売を8月30日に決定しました`
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2012-08-07T21:56:52.950
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2012-08-08T15:51:05.437
2012-08-07T22:28:27.763
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question
particles particle-が
... が決定しました rather than ... が決定されました
It is the nominative case marker on an intransitive subject. The verb 決定する can
be used transitively as you expected, or intransitively. You may not be able
to do this with the corresponding verb `decide` in English, but other verbs in
English have the same type of transitive alternation.

> The family settled in New York.  
>  The professor settled the test tube on a stand.
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2012-08-07T22:45:49.207
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2012-08-07T22:45:49.207
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answer
が simply marks a subject of a sentence, but your question is not really about
the use of が.

Note that
[決定する](http://dic.yahoo.co.jp/dsearch?enc=UTF-8&p=%E6%B1%BA%E5%AE%9A&dtype=0&dname=0na&stype=0&pagenum=1&index=05632900)
has two usages: 〈人〉が〈事〉を決定する (transitive) and 〈事〉が決定する (intransitive). The
former usage is similar to 決める, whereas the latter usage is similar to 決まる.

When we say something was decided without a focus on who did it, it is more
natural to use 決定する intransitively rather than using it transitively in the
passive form or with a subject omitted.

There are other verbs which can be used as both transitive verbs and
intransitive verbs. Examples are:

  * [[開]{ひら}く](http://dic.yahoo.co.jp/dsearch?enc=UTF-8&p=%E3%81%B2%E3%82%89%E3%81%8F&dtype=0&dname=0ss&stype=1&index=116714800000&pagenum=1): 扉を[開]{ひら}く / 扉が[開]{ひら}く (cf. [開]{あ}ける / [開]{あ}く)
  * [移動する](http://dic.yahoo.co.jp/dsearch?p=%E7%A7%BB%E5%8B%95&stype=1&dtype=0&dname=0ss): 自動車を移動する / 自動車が移動する (cf. 動かす / 動く)
  * [開始する](http://dic.yahoo.co.jp/dsearch?p=%E9%96%8B%E5%A7%8B&stype=1&dtype=0&dname=0na): 試合を開始する / 試合が開始する (cf. 始める / 始まる)
  * [分解する](http://dic.yahoo.co.jp/dsearch?p=%E5%88%86%E8%A7%A3&stype=1&dtype=0&dname=0ss): 自転車を分解する / 自転車が分解する (cf. 分ける / 分かれる)
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2012-08-07T22:51:23.193
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2012-08-08T15:51:05.437
2012-08-08T15:51:05.437
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answer