微生物防腐剂在食品保鲜上应用

随着科技的发展,食品工业也得到快速发展,食品保鲜是食品界十分关注的问题。在食品保鲜中常用的微生物防腐剂是一类由微生物产生的食品防腐剂,它能抑制微生物的生长或直接杀死微生物,是一种天然、安全、高效的防腐剂,在食品保鲜界的应用越来越广泛。本文首先分析微生物防腐剂的种类,然后具体介绍了在食品保鲜中使用最广泛的乳酸链球菌素和纳他霉素的具体应用,对于微生物防腐剂在食品保鲜上的应用有很强的现实意义。     

Emerging bicycle tourism and the theory of planned behavior

In this study, we investigated the process of travelers’ decision formation for bicycle touring as a form of sustainable tourism activity. We extended the theory of planned behavior (TPB), using personal norm and past behavior as predictors and the attractiveness of unsustainable alternatives as a moderator. Results of the modeling comparison showed that our extended TPB model was superior to the original TPB in predicting intention. Our results from the structural analysis revealed that the hypothesized paths linking attitude, subjective norm, perceived behavioral control, personal norm, and intention were supported; and personal norm significantly mediated the impact of subjective norm on intention. Moreover, our proposition that bicycle travelers’ decision-making process would differ based on their level of the attractiveness of unsustainable alternatives was generally supported. Overall, our results help us clearly understand the role of volitional and non-volitional processes, personal norm, past behavior, and the attractiveness of unsustainable alternatives in explaining the intention formation of bike traveling.     

Exploring how and when ethical conflict impairs employee organizational commitment: A stress perspective investigation

Previous studies demonstrate the detrimental effect of ethical conflict (i.e., incompatibility between ethical values of employees and organizations) on employee organizational commitment. However, few studies have assessed the underlying mechanisms and boundary conditions that may contribute to a deeper understanding of how and when the detrimental effect manifests. Drawing on the transactional model of stress and literature on the moral self, our study examines the psychological strain as a key intermediate mechanism that channels the negative relationship between the ethical conflict and organizational commitment. Furthermore, we posit that employees with different levels of moral identity and moral efficacy may suffer differently from ethical conflict. We tested our research model with two-wave lagged data obtained from 265 healthcare employees and found that the indirect, negative effect of ethical conflict on organizational commitment via psychological strain is strongest among employees with high moral identity and low moral efficacy. Interestingly, results show that employees with low moral identity and high moral efficacy do not suffer from ethical conflict. These findings suggest that ethical conflict is differentially harmful to employees and that a more nuanced understanding of its contingent effects is needed.     

转型条件下劳动关系变化的思考

从理论上讲,劳动争议的产生源于资本追求利润最大化与劳动追求福利最大化之间的矛盾。经济转型条件下,我国现行劳动关系发生了深刻的变化,其原因既具有资本与劳动矛盾的普遍性,也具有经济转型条件下的特殊性。本文在我国经济转型大背景下,分析了劳动关系存在的问题,从而针对问题探索了一些合理的解决途径。     

深圳国际低碳城“营城模式”的启示

深圳国际低碳城应对发展面临的创新、资金筹集和合作创新等需求,构建了一体化营城的模式,通过完善低碳城管理体制,探索构建多方合作及利益共享机制;通过发挥综合运营平台优势,提供全方位、全过程的专业服务;通过推进资源、资产、资本综合管理,创新多元化的筹资机制,在低碳城建设运营中取得了良好成效,并在创新新型园区建设运营、正确处理政府和企业在发展新兴产业中的关系方面,提供了有益的借鉴。     

物流专业课程教学案例库构建研究——基于知识管理视角

基于知识管理视角,提出了构建物流专业课程教学案例库的思路,从企业实践、日常生活、科研和互联网媒体与教学的互动关系等方面阐述构建案例库的基本途径,并以实例说明了物流专业课程教学案例库建设对师生能力形成和专业建设的促进效果。     

郊区工业发展现状及对策分析——以天津市为例

随着都市经济的发展,市区工业逐渐由向郊区转移是必然的趋势.近年来郊区工业发展速度在不断提升,产值不断增加,对经济和社会的贡献明显提高.以天津为例,通过总结天津郊区工业发展取得的成果,评价发展进程,分析发展中存在诸如实力不强、产业集中度不高、园区特色不突出、竞争力不强等问题,借鉴发达地区的经验,提出了天津郊区工业发展的路径和对策性建议.     

基于智能手机的互动型英语游戏App应用程序的研发

教育游戏类App在学科教学中应用,虽然早已被提出。但是通过调查发现,已有的一些教育游戏App一般只是起到了丰富学生课外活动的作用,知识很难系统的被学生接受理解运用。因此,本文通过对教育游戏相关理论和实践的研究,尝试通过对初中英语单词互动型游戏App的研发,能为英语游戏App在英语知识技能方面的应用研究提供参考。     

疫情下的国际应急采购管理实践与思考

新冠肺炎疫情发生后,个人、组织和社团、企业等都参与到全球采购的大军中,并且体现出各自的特点和重要意义,我国的国际贸易采购、国际综合物流能力在国际应急采购中得到检验。在现代信息技术和互联网广泛应用的时代,线上组织和实施应急采购和物流运输既为国际应急采购管理带来挑战,同时也带来了机会。本文通过分析疫情下国际物资采购的数据,总结紧急防疫国际采购多样化的特点,并针对互联网环境下信用体系的扩展以及包括采购、贸易、物流、人才积累等综合能力的发展,初步分析其对国际应急采购的影响。     

利用相位差变化趋势的多源信号关联

针对多源信号关联难度大、关联准确率低的问题，利用同一目标平台上搭载的多个辐射源信号具有一致的动态变化趋势这一特点，提出一种利用相位差特征的多源信号关联方法。已知阵列形式和侦测点位置，通过对侦收到的多个辐射源信号进行处理，获取相位差信息并累积形成相位差变化趋势；对比提取疑似相似段，根据相似性判决策略进行有效关联。该方法能有效避免不同传感器对位置测量的误差影响，相比传统基于位置信息关联的方法，能有效提升关联准确率。仿真和实测数据分析证明了该方法的有效性，在阵列形式和侦测点位置已知的条件下该方法具有重要工程意义。