数学的实践与认识
數學的實踐與認識
수학적실천여인식
MATHEMATICS IN PRACTICE AND THEORY
2009年
23期
113-118
,共6页
中国火灾%发生起数%趋势性%周期性%正弦函数%组合预测
中國火災%髮生起數%趨勢性%週期性%正絃函數%組閤預測
중국화재%발생기수%추세성%주기성%정현함수%조합예측
fire in China%occurrence number%trend%periodicity%Sine Function%combinatorial forecasting
研究火灾发生规律及发展趋势,具有实用价值.分析历年中国火灾统计数据,发现中国火灾的发生规律同时具有增长趋势性和周期波动性特征:①中国火灾从90年代开始大幅度增加,在2002年达到最大.然后逐年缓慢下降;②每年12个月呈正弦函数波动,周期为12,1、2月发生起数最大,8、9月最小.借助于MATLAB软件,根据2000-2006年中国火灾统计数据,建立火灾的月发生起数的非线性周期性组合预测模型,预测值与实际值的平均相对误差小于0.07.研究结论为消防研究、消防部门决策提供科学依据.
研究火災髮生規律及髮展趨勢,具有實用價值.分析歷年中國火災統計數據,髮現中國火災的髮生規律同時具有增長趨勢性和週期波動性特徵:①中國火災從90年代開始大幅度增加,在2002年達到最大.然後逐年緩慢下降;②每年12箇月呈正絃函數波動,週期為12,1、2月髮生起數最大,8、9月最小.藉助于MATLAB軟件,根據2000-2006年中國火災統計數據,建立火災的月髮生起數的非線性週期性組閤預測模型,預測值與實際值的平均相對誤差小于0.07.研究結論為消防研究、消防部門決策提供科學依據.
연구화재발생규률급발전추세,구유실용개치.분석력년중국화재통계수거,발현중국화재적발생규률동시구유증장추세성화주기파동성특정:①중국화재종90년대개시대폭도증가,재2002년체도최대.연후축년완만하강;②매년12개월정정현함수파동,주기위12,1、2월발생기수최대,8、9월최소.차조우MATLAB연건,근거2000-2006년중국화재통계수거,건립화재적월발생기수적비선성주기성조합예측모형,예측치여실제치적평균상대오차소우0.07.연구결론위소방연구、소방부문결책제공과학의거.
It is valuable to study fire regularity and trend. Based on statistics of fire in China in the past years, the characteristics of developing trend and periodical fluctuation are found in fire regularity in China, that is: 1) the number of fire in China is increasing rapidly since the 1990s, and to its largest in 2002 before its slow descent; 2) the number of fire occurrence fluctuates in a way of Sine Function in a period of 12 months with the largest in January or February and smallest in August or September. Based on MATLAB and statistics of fire in China from 2000 to 2006, non-linear periodicity combinatorial forecasting model for fire occurrence by the month is established, only to find the average relative error between predicted and observed value is within 0. 07. The result can provide scientific guidance for fire study and fire department as well.