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介绍了卷烟机在生产卷烟过程中,烟支长度偏差产生的原因,通过分析、计算、改进和试验找到解决办法,使烟支长度保持在下偏差范围,可以降低卷烟消耗,为卷烟企业创造可观的经济效益。 相似文献
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ABSTRACTWe present the determinants of the length of stay (LOS) of Porto Street Stage that integrated the program of the 52nd edition of Rally de Portugal. Sport events assume an important role in the marketing of tourism destinations. However, when we compare them with other segments in tourism, it still remains underexplored. This study represents an opportunity to contribute to the literature, and it could become a significant toll for the organizers, public entities and other stakeholders. We contemplate a set of information and data that may improve the management of the future editions in a more rigorous and effective way. As we are dealing with an international event, it is an occasion to enlist tourists and promote the tourist destination. We applied a quantitative analysis and considered the sociodemographic characteristics of the spectators, factors that influenced the trip, expenses per day in the city, level of satisfaction with the event, and the intention to return. An OLS regression model, a Weibull survival model and a zero-truncated negative binomial regression model were estimated, and the results were compared. On the LOS determinants it is not common to consider the influence of each item of expenditure during the stay and the satisfaction levels with the event and different effects were observed. The travel and accommodation expenditures present a negative effect on the LOS. In the opposite side the satisfaction level and intention to return, both present a positive effect on the LOS. The sociodemographic characteristics have diverse impacts on the LOS. 相似文献
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程春梅 《山西广播电视大学学报》2008,13(1):77-78
通过对第二语言写作教学的三个教学流派:成果教学法、过程教学法和体裁教学法的分析,本文提出大学英语的写作教学有其自身的特点,写作教学应该兼收并蓄,以调动学生的积极性为主,教师要了解以上三个教学流派的优点及其缺点,在教学中使用最新的科研成果--写长法,以达到更好的教学效果. 相似文献
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唐文杰 《湖南第一师范学报》2006,6(1):85-86,90
王初明教授根据中国外语学习的环境和学生在特定阶段的英语水平,首创英语"写长法".该方法主张以写促学,通过写长克服学习心理障碍,释放学习潜力,从而提高英语水平.这种赏识激励性的外语教学法大大地激发了学生的学习情感,增强了他们的学习成就感和自信心,符合我国外语教育发展的需要. 相似文献
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客户终生价值（Customer Lifetime Value，LTV）作为判别客户对公司价值大小的标准，对于电信运营商维系客户，提高企业竞争力具有重要意义.本文讨论了客户终生价值的数学模型，提出采用数据挖掘算法对模型中的二个参数进行计算，并按照CRISP-DM数据挖掘方法，使用数据挖掘工具对真实数据进行计算，证实该方法的有用性. 相似文献
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为探索网络在“写长法”,即“以写促学”大学英语教学中的作用,对莆田学院2004级中文041班的38名学生进行了为期一学年的网络环境下的“写长法”教学实验。实验结果表明,网络能有效发挥“写长法”教学优势,极大提高学生的写作兴趣,促进写作能力的提高。 相似文献
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结合英文论文标题的已有研究成果,深入中文论文标题的探讨,通过数据统计定量分析中文论文标题类型的下载和引用的特点,以及标题长度和带冒号的标题对下载和引用的影响,揭示论文标题与下载和引用的关系,填补了国内关于这一研究的空白。 相似文献
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Brooks R. Keeshin Jeffrey R. Strawn Aaron M. Luebbe Shannon N. Saldaña Anna M. Wehry Melissa P. DelBello Frank W. Putnam 《Child abuse & neglect》2014
Many children and adolescents who require psychiatric hospitalization have been physically or sexually abused, yet the association between reported histories of abuse and the complexity and severity of mental illness among psychiatrically hospitalized youth is poorly described with regard to current inpatient psychiatric practice. We sought to determine the association between histories of abuse and psychiatric complexity and severity in psychiatrically hospitalized youth including comorbidity patterns, psychotropic medication use, reason for admission and length of hospitalization. A systematic chart review was performed on 1433 consecutive psychiatric hospitalizations of children and adolescents that occurred over a 10-month period. Children with a history of abuse were more likely to be diagnosed with multiple DSM-IV-TR disorders than non-traumatized children. A history of sexual abuse was associated with more medication use than in their non-traumatized peers and a higher likelihood of treatment with antipsychotic medications, both at admission and discharge. Physical and sexual abuse were independently associated with increased length of stays, with exposure to both physical and sexual abuse associated with a 2-day increase in duration of hospitalization compared to non-traumatized patients. The findings from this study draw attention to the adverse impact of abuse on psychiatric morbidity and complexity and suggest the need for trauma-informed treatment in psychiatric hospital settings. 相似文献