基于ARIMA的居民消费价格指数建模与预测

根据我国2007～2010年的实际居民消费价格指数，建立了基于ARIMA的物价指数预测模型。实验结果表明，该模型的绝对误差以及百分比绝对误差都控制在了一定范围之内，因此该模型拟合效果较好，预测值接近实际值。最后，应用该模型对我国2011年1月至5月的居民消费价格指数进行了预测。     

时间序列分析在居民消费水平指数预测中的应用

该文利用SAS统计软件对我国1978-2009年的居民消费水平指数数据进行分析,分别建立了ARIMA模型和Auto-Regressive模型,并给出了反映各个模型拟合精度的AIC值和SBC值,进而确立了一个反映居民消费水平指数变化规律的较优模型.最后,利用该模型对2010年到2014年的全国居民消费水平指数进行了预测.结果表明ARIMA((2),2,0)模型在短期预测中达到了较高的精度.     

我国居民消费价格指数时间序列预测——基于ARIMA模型的分析

CPI(居民消费价格指数)是反映与居民生活有关的商品以及劳务的价格变动指标,可以衡量一国通货膨胀程度。为把握我国居民消费价格指数的变动趋势,本文选取2009年1月至2017年4月CPI时间序列数据,采用时间序列分析的方法,对数据进行处理及ADF检验等方法分析CPI序列的特征,并选择自回归移动平均(ARIMA)模型对我国的居民消费价格指数数据进行建模预测,得出2017年5月CPI指数为101.8%,预计通货膨胀温和。     

中国人口数量的时间序列分析

本文运用时间序列模型（ARIMA模型）对中国人口进行分析与预测,应用Eviews6．0软件对1949～2007年中国人口数据进行拟合,建立ARIMA模型,运用2008～2010年的人口数据来验证模型,并对2011年的总人口数进行了预测。     

对我国2012年CPI的预测分析

通货膨胀是各国政府和经济学家所关注的问题,而居民消费价格指数作为一个重要的宏观经济指标,与宏观经济运行有着密不可分的联系是市场经济活动与政府货币政策的一个重要参考指标在充分学习其他学者已有的研究成果的前提下,本文基于2004年到2011年我国居民消费价格指数月度时间序列数据,选取了合适的模型对其趋势进行拟合,并对2012年CPI做出预测,对预测结果进行了分析。     

房地产价格指数与居民消费水平的动态回归分析

以SAS软件为工具,对郑州市2009年5月至2013年5月新建住宅价格指数序列和居民消费价格指数序列进行协整分析,分别拟合了动态回归ARIMAX模型和误差修正ECM模型.ARIMAX模型显著有效,揭示了居民消费价格指数对新建住宅价格指数的影响系数达到1.014 73,预测结果显示,郑州市的房价近期仍呈上升态势,上涨幅度维持在1%左右.ECM模型拟合效果不理想,说明房价受短期波动的影响很小,对房地产市场的调控漫长而复杂.     

“十三五”时期中国粮食产量的预测研究

从中国粮食产量的历史趋势中找出规律,寻找适当模型为政府进一步制定相关的农业改革政策提供参考。以1949—2014年中国粮食产量数据作为建模样本,运用EViews 6.0,建立中国粮食产量的ARIMA模型。建立了ARIMA)0,1,1(模型,并对样本数据进行拟合预测,经检验拟合效果较好,预测精度较高。模型预测效果显著,具有现实意义。     

郑州市居民消费价格总指数的预测

借助SPSS软件,对郑州市2001.1-2006.9期间居民消费物价指数进行了分析,通过对比了ARIMA模型和带周期性的ARIMA模型对物价指数的预测效果,指出郑州市物价指数具有季节性和周期性特点,并预测了2006年第4季度郑州市的居民消费价格水平。     

AR IMA模型对中国健康保险的预测研究*

目的从中国健康保险的历史趋势中找出规律,寻找适当模型分析健康保险的可持续发展状况。方法以2006年1月至2015年11月中国健康险保费收入数据作为建模样本,运用EViews7.0,建立中国健康保险的ARIMA模型。结果建立了ARIMA(1,1,1)(1,1,1)~(12)模型,并对样本数据进行拟合预测,经检验拟合效果较好,预测精度较高。结论样本外预测依然呈现历史规律,未来趋势性正面影响和季节性反面影响更加显著。     

季节ARIMA模型在我国肺结核发病率预测中的应用

目的探讨应用季节ARIMA模型对我国肺结核发病率进行预测的可行性.方法对我国2005年1月-2010年12月肺结核逐月发病率建立季节ARIMA模型,并对预测效果进行评价.结果 ARIMA（3,1,0）×（0,1,1）12模型很好地拟合了既往数据,对2011年1月-9月发病率的预测值符合实际发病率变动趋势.结论季节ARIMA模型能很好地模拟我国肺结核发病率的变动趋势,将其应用于肺结核发病率预测是可行的.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.