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121.
食品安全监管:行业维度下的自律分析 总被引:4,自引:0,他引:4
郭琛 《西北农林科技大学学报(社会科学版)》2010,10(5):109-115
"政府监管为主,行业自律为辅"是我国现行《食品安全法》所架构的食品安全监管体制。为真正落实《食品安全法》就监管体制所做的安排,需要从制度上强化食品行业组织的自治功能,完善食品行业自律监管机制,从而真正实现以行业自律监管弥补政府监管失灵的预期功能,提升食品安全监管的整体效率,并推动食品安全立法目标的实现。 相似文献
122.
社会结合传统理论主要以血缘、地缘、业缘、趣缘作为社会结合的主要纽带,费孝通先生的差序格局理论则是以有亲至无亲个体间的差序作为社会结合的基础。相对忽略并较少讨论非血缘、有差异的个体间社会结合的过程和脉络。云南怒江娃底傈僳人“伴”的地方概念和行为是处理家人之外非血缘的朋友、熟人与陌生人之间的一个行动准则,对其展开的研究能为我们提供一种有异于社会结合传统理论和差序格局系统的非血缘、有差异个体间社会结合的行动框架。 相似文献
123.
Rand R. Wilcox 《Journal of applied statistics》2018,45(1):100-111
Consider the usual linear regression model consisting of two or more explanatory variables. There are many methods aimed at indicating the relative importance of the explanatory variables. But in general these methods do not address a fundamental issue: when all of the explanatory variables are included in the model, how strong is the empirical evidence that the first explanatory variable is more or less important than the second explanatory variable? How strong is the empirical evidence that the first two explanatory variables are more important than the third explanatory variable? The paper suggests a robust method for dealing with these issues. The proposed technique is based on a particular version of explanatory power used in conjunction with a modification of the basic percentile method. 相似文献
124.
企业的置换装配线调度问题(Permutation Assembly-line Scheduling Problem,PASP)是一类典型的NP-hard型生产调度问题,是现代集成制造系统CIMS极为关心的问题。该问题可以具体描述为n个工件要在m台机器上加工,每个工件需要经过m道工序,每道工序要求不同的机器,这n个工件通过m台机器的顺序相同,它们在每台机器上的加工顺序也相同,问题的主要目标是找到n个工件在每台机器上的最优加工顺序,使得最大完工时间最小。由于PASP问题的NP-hard性质,本文使用遗传算法对其进行求解。尽管遗传算法常用以求解调度问题,但其选择与交叉机制易导致局部最优及收敛慢。因此,本文提出基于区块挖掘与重组的改进遗传算法用于求解置换装配线调度问题。首先通过关联规则挖掘出不同的优秀基因,然后将具有较优结果的基因组合为优势区块,产生具优势的人工解,并引入高收敛性的局部搜索方法,提高搜索到最优解的机会与收敛效率。本文以OR-Library中Taillard标准测试例来验证改进遗传算法的求解质量与效率,结果证明:本文所提算法与其它求解调度问题的现有5种知名算法相比,不仅收敛速度较快,同时求解质量优于它们。 相似文献
125.
如果已知Copula函数的某些信息,通常其Frechet-Hoeffding上下界则可以进一步收窄。R.B.Nelson分别在已知Kendall相关系数tau、Spearman相关系数rho、Blomqvist相关系数beta的条件下,给出了Copula函数的上下确界。鉴此,在给定Gini相关系数gamma的条件下,证明Copula函数的上界也可以进一步变窄,并给出上确界的表达式。 相似文献
实践中许多品牌延伸失败案例都表现出了延伸产品与原品牌联想存在冲突的现象。通过对百事、奔驰、苹果三个品牌的研究发现,消费者对核心联想冲突延伸产品评价较低,低于无核心联想延伸产品。利用完美主义将消费者分类,非完美主义者、健康的完美主义者和功能障碍型完美主义者对核心联想冲突延伸产品评价无差异,所有这三类消费者都对核心联想冲突延伸产品的评价很低。研究还发现,存在消费者虽然对某种核心联想冲突延伸产品感知契合度评价较低,但却乐于购买的现象,故推出此类核心联想冲突延伸产品更需要谨慎对待。 相似文献
127.
专业社团作为学生职业能力培养的创新载体,在高职院校的专业人才培养中承担重要的社会功能.但是专业社团在高职院校的发展并不顺利,遇到经费没保障、专业技能不足、组织结构松散、培训督导滞后等诸多问题.南京城市职业学院的特色专业社团——“社工协会”三年来的社会服务实践反映了当前高职院校专业社团发展存在的共性问题,需要从增权视角进行能力建设. 相似文献
128.
《Marriage & Family Review》2013,49(3-4):73-95
No abstract available for this article. 相似文献
129.
许莉 《合肥工业大学学报(社会科学版)》2013,(6):95-98
由词义引申而形成的一词多义现象普遍存在,揭示出人类认知的构成方式、工作方式以及语言形成、发展的一些重要规律。词义引申主要缘由是人们在认识外界事物时的隐喻式思维活动和语言运用过程中的经济性原则,即人们使用语言时总是倾向于高效、省力的方式。词义隐喻式的引申是认知活动和语言交际中实现经济性原则的重要途径,而人们用旧词隐喻性地表达一个新概念的内在驱动力就是经济性原则。 相似文献
130.
Direct and indirect aggressive behaviors were studied using surveys and interviews of students in two public schools. The
variables of “sex-of-aggressor” and “sex-of-target” were included. Claims in previous research that girls engage in far more
indirect aggression than boys are not supported. Further, it was found that girls are more likely to target the opposite sex
with direct aggression than boys. This suggests more gender fluidity in the use of aggression by girls and adds to a growing
body of research that dispels the notion that direct and indirect aggression can be neatly sorted into male and female categories
of behavior.
Sibylle Artz Ph.D., is a Full Professor in the School Child and Youth Care at the University of Victoria. Her research focuses on aggression and violence and girls’ use of violence. She has written two books, Feeling as a Way of Knowing (1994) and Sex, Power and the Violent School Girl, (1997) and co-edited, a third book Working Relationally with Girls, (2004), with Dr. Marie Hoskins. Diana Nicholson is a Ph.D., Candidate in the Centre for Cross-Faculty Inquiry in Education at the University of British Columbia in Vancouver, Canada. Her research in the past decade has focused largely on supporting at-risk youth. She has a general interest in effective practice with children and youth, and a special interest in qualitative inquiry and relationally-based educational initiatives. Dr. Douglas Magnuson is Associate Professor in the School of Child and Youth Care at the University of Victoria. He is working on a study in child protection, including (a) the use of influence methods and mandated authority, (b) professional judgment and decision-making, and (c) the use of solution-focused methods in domestic violence cases. In recent years he has published articles on the pedagogy of spirituality in child and youth care. He is the editor of Working with Youth in Divided and Contested Societies and has a forthcoming article in Youth and Policy. 相似文献
Sibylle ArtzEmail: |
Sibylle Artz Ph.D., is a Full Professor in the School Child and Youth Care at the University of Victoria. Her research focuses on aggression and violence and girls’ use of violence. She has written two books, Feeling as a Way of Knowing (1994) and Sex, Power and the Violent School Girl, (1997) and co-edited, a third book Working Relationally with Girls, (2004), with Dr. Marie Hoskins. Diana Nicholson is a Ph.D., Candidate in the Centre for Cross-Faculty Inquiry in Education at the University of British Columbia in Vancouver, Canada. Her research in the past decade has focused largely on supporting at-risk youth. She has a general interest in effective practice with children and youth, and a special interest in qualitative inquiry and relationally-based educational initiatives. Dr. Douglas Magnuson is Associate Professor in the School of Child and Youth Care at the University of Victoria. He is working on a study in child protection, including (a) the use of influence methods and mandated authority, (b) professional judgment and decision-making, and (c) the use of solution-focused methods in domestic violence cases. In recent years he has published articles on the pedagogy of spirituality in child and youth care. He is the editor of Working with Youth in Divided and Contested Societies and has a forthcoming article in Youth and Policy. 相似文献