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1、鈾是核能源和制造核武器的重要原料,鈾礦山企業(yè)則提供我國核能源和核武器制造所需的鈾原料,因而鈾礦企業(yè)在我國國民經(jīng)濟(jì)和國防安全中的地位不言而喻。而鈾產(chǎn)品價(jià)格的波動(dòng)性很大,同時(shí)鈾產(chǎn)品價(jià)格受到國際政治形勢(shì)和石油產(chǎn)品價(jià)格變化的影響,因此鈾礦項(xiàng)目投資具有相當(dāng)大的不確定性和價(jià)格風(fēng)險(xiǎn)。怎樣認(rèn)識(shí)風(fēng)險(xiǎn),怎樣合理處理和控制鈾礦項(xiàng)目的投資風(fēng)險(xiǎn)和評(píng)價(jià)鈾礦項(xiàng)目風(fēng)險(xiǎn)大小就成為當(dāng)前迫切需要解決的問題,這對(duì)我國核事業(yè)的發(fā)展顯得尤為重要。
本文從風(fēng)險(xiǎn)理論的起源入
2、手,論述了風(fēng)險(xiǎn)理論、風(fēng)險(xiǎn)管理和分析的一般理論與方法。論述了風(fēng)險(xiǎn)價(jià)值VaR的計(jì)算方法與原理。在此基礎(chǔ)上分析了近年來鈾產(chǎn)品價(jià)格歷史數(shù)據(jù),認(rèn)為鈾產(chǎn)品價(jià)格的分布具有尖峰厚尾特征,并建立了基于GARCH和Monte Carlo法的VaR計(jì)算模型。以某鈾礦項(xiàng)目為例,分別計(jì)算了基于歷史模擬法、正態(tài)模擬法和基于GARCH的Monte Carlo模擬法的VaR值。通過對(duì)結(jié)果的比較和分析,認(rèn)為用基于GARCH的Monte Carlo模擬法計(jì)算得到的VaR值
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