浅析世界遗产门票价格问题

此次世界遗产地门票涨价事件引起很大争论,本文通过对世界遗产定义属性来分析涨价原因,从中渗透出遗产门票涨价本质属于中国遗产管理问题所致,并针对现存遗产管理现状,汲取西方遗产管理经验,对中国遗产管理问题提出改革建议.     

植物基因工程与遗传育种

论述了植物基因工程育种技术的突破性研究进展,对植物基因工程育种前景进行了展望,提出了若干尚待解决的问题。     

SQL3 object model and its extension

As the latest version of relational database standard. SQL3 not only has been extended with many new relational features but also added with the object-oriented technologies. This paper introduces the object-oriented leatures of SQL3 and then extends it with object deputy model to support object view mechanisms.     

Science,politics and regulation: The trust-based approach to the demarcation problem

Drawing on literature on values in science and a case-study of UK cancer policy, this paper argues for a novel account of the demarcation project in terms of trustworthiness. The first part of the paper addresses the relationship between science, politics and demarcation. In 2010, the UK government decided to pay more for cancer drugs than for drugs for other diseases; in 2016, this Cancer Drugs Fund was reformed so as to lower the evidential standards for approving cancer drugs, rather than paying more for them. Are these two ways of treating cancer as “special” importantly different? This paper argues that, if we the argument from inductive risk seriously, they seem equivalent. This result provides further reason to doubt the notion of demarcating science from non-science. However, the second part of the paper complicates this story, arguing that considerations of epistemic trust might give us reasons to prefer epistemic communities centred around “broadly acceptable” standards, and which are “sociologically well-ordered”, regardless of inductive risk concerns. After developing these claims through the cancer case-study, the final section suggests how these concerns might motivate novel versions of the demarcation project.     

网络拍卖中综合信任模型的研究

针对网络拍卖中用户信任评估存在的诸多问题,提出一种综合性信任模型.该模型根据网络拍卖者的不同参与方式,将拍卖参与者划分为投标者、招标者和第三方机构/拍卖网站,综合考察影响三类参与者信任度评估的因素,如近期信誉度、时间权重、行为分析等,单独计算不同类型参与者的信任度.由于模型分角色考察参与者的信任度,降低了信任评估中干扰因素的影响,提高了该信任度计算的准确性、有效性和健全性.     

RAPD分析在诸葛菜与太白诸葛菜种间正反交杂种中的应用

用２０个随机序列的寡聚核苷酸作为引物，对诸葛菜９５００２和太白诸葛菜９５－４９及其种间正反杂种进行ＲＡＰＤ分析，９个引物的扩增产物在９５００２和９５－４９间相似率为４８．１％，差异较大，在其正反交杂中相似率为９６．６％，差异不明显，ＲＡＰＤ产物在亲子间的传递符合孟德尔遗传，这一种间正反交系统可用于多态性引物的选择。     

基于广义意见动态模型的社交信任网络意见最大化问题

提出了一种广义意见动态模型（GODM），此模型可以通过动态计算每个人的表达意见来解决社交信任网络中的意见最大化问题。在模型中提出了一个新的、合理的、可解释的自信指数${\alpha _{{i}}}$，${\alpha _{{i}}}$由个人的社会地位与其周围人的评价共同决定。并且利用对角占优理论，得到模型达到纳什均衡状态时的最优解析解。设计了一种具有l₁ 形式的交替方向乘子法来最大化现有的总体意见。进行了一系列实验，实验结果表明，此方法在4个数据集上都有较好的结果。在4个数据集上，解决内部意见问题的平均效益分别提升了 66.4%，88.7%，47.8% 和 34.1%。实验结果充分验证了所提模型的优越性。     

制造网格环境下的信任特点和管理思路

立足在大制造环境信任的共性下,阐述目前网格环境下信任的研究现状,分析制造网格环境下信任的特殊需求及其特点,并提出制造网格环境下的信任管理新思路。