食用油的质量安全与检测方法分析

为了满足人体机能,在日常生活中,人们必须摄取一定的油脂来保证健康。食用油作为一种最常见的油脂,可以为人体提供充分的营养,而且很多食品的基础原料也是食用油。随着社会的发展,人们对于食物的安全问题越来越重视,因此要不断提高食用油的质量安全,只有使用科学的检测方法,才能在极大程度上保证食用油的安全。目前,社会各界的人士已经将目光放在了食用油的安全问题上,也因此,必须尽快提升食用油的质量检测手段。人的身体健康与食用油有着密不可分的关系,只有安全的食用油才可以让人们放心的食用。本文主要对食用油的质量安全进行探讨,并且介绍了一些检测方法。     

基于Citespace的食品添加剂可视化分析

查找对Web of science数据库中有关食品添加剂的文献,目的在于更好分析食品添加剂的研究热点和趋势,从而提出如何防止消费者谈"添"色变的建议。利用Citespace软件,检索Web of science数据库内2001—2015年的相关文献,其内容包括文献的年度分布、研究机构、关键词和研究国家的可视化分析。利用Web of science数据库,一共检索到了824篇文章。分析食品添加剂研究热点及常见问题,了解消费者恐惧食品添加剂的原因,针对原因找出解决办法。     

再论开发智力,加强对学生创造性能力的培养

本文阐述了针对如何培养学生较高的创造力,避免高分低能的现象,提出转变教育观念,吸取历史教训,对记忆与创造的关系要正确认识,教学中应摒弃死记,把学生创造力的培养与发挥作为重点。     

Empirical study of destination loyalty and its antecedent: the perspective of place attachment

Due to the increasing competition in the leisure and tourism market, loyalty-related studies and researches have been gaining attention. This empirical research explores the formation of destination loyalty from the interaction of visitors with hot-spring resorts (place attachment) and examines the relationship between such a loyalty and its antecedents. Based on an attitude framework, this study conceptualizes place dependence, place identity, and behavioural intention as the tripartite framework of destination loyalty. Using the covariance structure analysis, empirical results indicated that the service quality–satisfaction–loyalty model is supported and tourist satisfaction completely mediates the effect of service quality on place dependence, place identity, and behavioural intention.     

NONCONVEXITY OF THE OPTIMAL EXERCISE BOUNDARY FOR AN AMERICAN PUT OPTION ON A DIVIDEND‐PAYING ASSET

We prove that when the dividend rate of the underlying asset following a geometric Brownian motion is slightly larger than the risk‐free interest rate, the optimal exercise boundary of the American put option is not convex.     

货币虚拟化进程的历史考证

货币虚拟化是适应社会、经济发展和科技进步的产物。当前，在经历了胚胎阶段、潜在可能阶段、夺取主导地位等阶段的演变后，货币虚拟化体现出了新的发展趋势——网络虚拟化货币。通过货币虚拟化进程的历史考证，对加深货币本质、货币虚拟化实践动因和金融虚拟化的理解有重要启示作用。     

一种改进的基于EMD分解的超宽带信号消噪算法

针对低信噪比超宽带信号的消噪问题，提出一种改进的基于经验模式分解（EMD）的 消噪算法。该算法首先对含噪信号进行EMD分解，得到多个固有模态函数（IMF）分量，然后 选取高阶IMF重构原信号，达到消噪的目的。针对对UWB信号的IMF重构过程中阶数阈值难以 确定的问题，通过数值仿真的方法，得到信号分量和噪声分量在不同阶IMF上的能量分布特 性；在对所得特性进行分析的基础上，设计了一种数据自适应的阶数阈值选取算法，解决了 EMD消噪中的阶数阈值选取问题。仿真结果表明，EMD消噪算法能够在较低信噪比下提供平均 10 dB的信噪比增益，可以有效地对超宽带信号进行消噪。     

论接续犯的认定

接续犯属于实质的一罪,而连续犯属于实质的数罪。二者区别的关键在于数个危害行为在时间上的密接性程度。在理解接续犯的既遂形态时,应当将数个危害行为作为一个整体。     

Information, incentives and multinational firms

I present a model that explains a multinational firm's choice of organizational form. If a firm in the developed country outsources the production of its intermediate goods to a supplier in the developing country, it faces an adverse selection problem. If it chooses to produce the intermediate goods in its own subsidiary in the developing country, it faces an inefficient monitoring problem. My analysis of this tradeoff provides a new explanation for the observation that FDI is concentrated in capital intensive industries and yields two empirical hypotheses: more firms should adopt outsourcing instead of FDI after trade liberalization; the share of intra-firm trade in total trade should be increasing in the degree of productivity dispersion across intermediate goods suppliers in the developing country.