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51.
目前研究的模糊C均值聚类算法(FCM)面临的最重要问题是初始值随机选取,导致其容易陷入局部最优,同时影响运算速度.而灰色预测GM(1,1)模型在形成预测公式时对初始值的选取也没有合理有效的方案.针对以上问题,文章提出坐标密度法,确定初始聚类中心,对FCM算法进行改进;接着提出运用改进的FCM求取GM(1,1)中数据的聚类中心,并把聚类中心作为初始值的方法;通过与已知算法进行比较验证了其可行性和有效性. 相似文献
52.
Dipl.-P?d. Sonja L?ser 《Gruppendynamik und Organisationsberatung》2012,43(4):357-370
In the context of a pilot study the effects of the educational-psychological intervention Introvision were tested with older long-term unemployed people. The project was accomplished in the time by 1.4.2010 to 31.12.2010 in co-operation between ARGE Paderborn and the research group Introvision. In the context of the project 16 employees of ARGE Paderborn participated in an advanced training to Introvision, 31 customers of ARGE Paderborn began a coaching to get introduction in Introvision and 20 have also finished. Nine customers decided to participate five individual coachings. The results show, that the offers have a high individual use for the participants. To the central changes belong improved handling of stress, decrease of social isolation, improved (self-) perception as well as a higher self-confidence and a more open co-operation between customers and employees of ARGE Paderborn. Besides four participation began a job on the first labour market and two could be connected to a honorary activity. 相似文献
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Dipl.-Kffr. Irina Heimbach Dr. J?rn Grahl Prof. Dr. Franz Rothlauf 《Zeitschrift für Betriebswirtschaft》2012,82(7-8):745-762
Most research on line design assumes that human operators perform independently from the status of the line. Recent empirical evidence is contradictory. Humans are likely to change their working speed if they might otherwise cause idle time (Schultz et al., Manage Sci 44(12):1595–1607, 1998). This peculiarity of worker behavior is observed in a variety of settings but little is still known about optimal line design that accounts for this more realistic modeling of worker behavior. Therefore, we analyze work allocation in a serial line with limited buffer capacity and adaptive human behavior. An extensive simulation study reveals that optimal work allocation in state-dependent models is different from classical state-independent models. A bowl-shaped work allocation might be suboptimal and design guidelines are more complicated. Depending on the extent of human reactions, a bowl-shaped, balanced, or reversed-bowl work allocation can be preferable. 相似文献
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一个偶然的机会,辽宁省非物质文化遗产保护中心工作人员了解到,沈阳有一所外籍学校,那就是位于沈阳市和平区的沈阳国际学校,它成立于1998年,有来自韩国、日本、美国、加拿大等国家的学生1 98人,执教的中外教师80余人. 相似文献
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论当代国家文化安全问题 总被引:1,自引:0,他引:1
白雪 《贵州大学学报(社会科学版)》2011,29(4):7-11
冷战结束后,时代的主题逐渐过渡为和平与发展。在新的国际形势下,保卫好国家文化安全,就相当于打胜了一场不见硝烟的战争。虽然当下我们的文化安全面临着内在和外部的压力,存在着种种问题,受到了方方面面的挑战,但是随着我们对这一问题关注度的提高,其解决也呈现出多种途径,未来还有很多工作要做,这不仅仅是保持乐观的问题。 相似文献
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基于浙江省某独立学院2009学年学生学费和教师课时津贴的调查数据,运用成本分析、人力资本形成与收益理论、工资及福利核算理论及会计工具,就独立学院学生培养成本和教师课时津贴关联性进行理论分析和数据检验,得到以下研究结果:a.教师课时酬金比例占当年人员经费总量达到34.3%,位居人员支出项目首位.b.2009年每个学生全年所支付的学费中,有13.38%用于支付教师的课时津贴. 相似文献
59.
Despite the fact that sickle-cell disease (SCD) is perhaps the most “racialized” medical condition in the USA, very little is known about how “race” impacts public support for health policies related to the condition. We embedded an experiment within the 2011 Cooperative Congressional Election Study in order to assess perceptions about SCD among 1250 participants from diverse backgrounds and evaluate the extent to which these perceptions were associated with support for government spending on SCD-related benefits. We manipulated the racial phenotype of SCD advocates who requested additional government funding and asked participants to indicate how much the government should provide. Overall, participants expressed moderately positive attitudes about SCD, and there were no differences in funding support based on the race of the advocate. However, white participants supported less funding compared to nonwhite participants, even after adjusting for a number of demographic and attitudinal covariates. These findings suggest that a complex relationship between racial identification and implicit racism may shape public perceptions about SCD that negatively influences perceivers’ support for SCD-related policy. 相似文献
60.
Robert?Joseph?TaylorEmail authorView authors OrcID profile Dawne?M.?Mouzon Ann?W.?Nguyen Linda?M.?Chatters 《Race and social problems》2016,8(4):326-339
This study examined reciprocal support networks involving extended family, friends and church members among African Americans. Our analysis examined specific patterns of reciprocal support (i.e., received only, gave only, both gave and received, neither gave or received), as well as network characteristics (i.e., contact and subjective closeness) as correlates of reciprocal support. The analysis is based on the African American subsample of the National Survey of American Life. Overall, our findings indicate that African Americans are very involved in reciprocal support networks with their extended family, friends and church members. Respondents were most extensively involved in reciprocal supports with extended family members, followed closely by friends and church networks. Network characteristics (i.e., contact and subjective closeness) were significantly and consistently associated with involvement with reciprocal support exchanges for all three networks. These and other findings are discussed in detail. This study complements previous work on the complementary roles of family, friend and congregational support networks, as well as studies of racial differences in informal support networks. 相似文献