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1.
长期以来,我国财政资金使用效益不高,开支浪费大,监督机制不健全,并由此产生腐败现象,阻碍了经济的发展。建立政府采购制度是解决上述问题的重要途径,也是强化我国财政支出管理的必由之路  相似文献   
2.
ABSTRACT

Although e-commerce is evolving at an incredible speed, asymmetric information and opportunism have increased online purchasing risks and market inefficiencies. The lack of face-to-face contact and the inability of the customer to touch and feel tangible products necessitate that online business must provide customers with reliable information and convince customers of their trustworthiness. While the research on Third-Party Assurance Seals (TPAS) is not new, the effectiveness of TPAS has not been persuasively addressed by empirical studies. Our study is different from previous efforts in that it is comprehensive because it combines consumer trust, perceived risk, and influences of TPAS in the B2C e-commerce context. The results of the study show that (1) the effects of TPAS on perceived risk are channeled through perceived trustworthiness, thus demonstrating the mediating role of perceived trustworthiness in B2C e-commerce, (2) perceived risk, perceived usefulness of website, and subjective norm appear to be significant predictors of intention to purchase from the website, (3) a third-party assurance seal strongly affects online shoppers' perceived trustworthiness toward online retailers, while the seal appears to have little effect on perceived risk directly; perceived risk is strongly associated with intention to purchase from the website.  相似文献   
3.
AISAS模型的5个关键环节(注意、兴趣、搜索、行动、分享),通过扎根理论识别出决定社交商务平台用户在线购买行为的7个前因变量——在线广告效果、在线评论刺激、推荐引擎、平台形象、感知风险、社交分享和社会支持,采用包含42个题项的测量量表进行问卷调查,对363份问卷的fsQCA分析发现:所有前因条件均不能单独构成高在线购买行为和低在线购买行为的必要条件,提高在线广告效果和强化社会支持对高在线购买行为具有较为普适的作用,而在线广告效果较差和推荐引擎较弱则是产生低在线购买行为的重要条件;导致高在线购买行为的5条组态路径分别对应冲动型、浏览型、依附型、自主型、稳定型5种消费模式,导致低在线购买行为的3条组态路径可归纳为独立型和谨慎型2种消费模式。因此,平台运营者应重视在线广告、推荐引擎和社会支持的协同作用,改善平台形象和社交分享以巩固用户信任,并应制定个性化策略以满足不同用户的差异化需求,有效助力社会消费的增量提质。  相似文献   
4.
[目的]生物菌肥对于土壤改良、环境改善、食品安全具有重要意义,但目前生物菌肥在整个肥料产业中所占份额较小,迫切需要探讨如何从农户角度提高生物菌肥的施用比例。[方法]基于设施蔬菜农户的数据,构建Bivariate Probit模型,对农户生物菌肥的购买意愿和行为的影响因素进行比较研究。[结果]农户的生物菌肥购买意愿和行为总体上呈现一致性,愿意购买的农户中有97. 77%的农户具有实际的购买行为;但两者的影响因素有所差异,从差异因素来看,质量安全检测对购买意愿具有显著的正向影响,但对购买行为的影响并不显著;农户文化程度、种植年限、对无公害、绿色、有机蔬菜的了解程度,经销商推荐,施肥指导对购买行为具有显著的正向影响。从共同因素来看,生态环境认知变量对购买意愿和购买行为影响不显著。[结论]要推广生物菌肥,需要进一步加强质量安全检测体系对农业行为的约束性,提升经销商的规范经营意识,采用集中招标等灵活的价格政策,提升农户的生态技能,并在保护生态环境方面出台更完善的农业绿色发展政策。  相似文献   
5.
    
Assuming that two‐step monotone missing data is drawn from a multivariate normal population, this paper derives the Bartlett‐type correction to the likelihood ratio test for missing completely at random (MCAR), which plays an important role in the statistical analysis of incomplete datasets. The advantages of our approach are confirmed in Monte Carlo simulations. Our correction drastically improved the accuracy of the type I error in Little's (1988, Journal of the American Statistical Association, 83 , 1198–1202) test for MCAR and performed well even on moderate sample sizes.  相似文献   
6.
7.
纳兰词中雨意象出现频率颇高,统计起来,在纳兰性德的三百四十三首词中,雨出现了八十七次之多。可将雨意象归纳为四类,分别是思妻之雨、悼亡之雨、思友之雨和怀乡之雨。雨的意象的形成,与词人个人独特的感伤性格、词人自己一生的遭遇、词人的伤感的审美观以及传统的婉约词尤其是北宋词的影响有关。  相似文献   
8.
ABSTRACT

Both in business and in academic research, the Internet and electronic commerce grow exponentially. Attention has predominately been directed to developing the companies' capabilities and systems, while the consumers' perspective in contrast has received much less attention. This paper takes this perspective and focuses on online behavior of specifically 16- to 18-year-old teenagers. This particular segment tends to open to new things and know a great deal about using computers and the Internet. A questionnaire conducted among students in a high school in southern Finland showed that the overwhelming majority had computer and Internet access at home. Most of the young respondents had already used the Internet for various purposes and intend to do so even more in the future. For the young, information search and communication were the main purposes of using the Internet, and lower-value products related to mobile phones were the main products being bought online. At the same time they had different concerns that influence their behavior and, somewhat surprisingly, reported a slightly negative attitude towards electronic commerce. In line with previous studies, privacy and security issues were the primary concerns for the young Internet users. Gender aspects also emerged from the data since there were several differences in Internet usage and online purchasing between girls and boys. Based on the findings, the paper ends with implications and recommendations for companies attempting to approach teenagers in order to build relationships with them.  相似文献   
9.
This study explores the formation of relationship quality and online purchase intention in the service context of tourism, and a model is also introduced. This study tries to conceptualize a model based on a mediating mechanism of relationship quality that may be applied to understand online purchase intention in tourism. Learning the critical role of relationship quality in e-tourism can guide tour service providers to design different strategies for different online customers, and consequently achieve high customer online purchase to tourist service and product. In the proposed model of this study, the perceived incentive, perceived service quality, perceived ease of purchasing and perceived usefulness influence customer online purchase intention indirectly via the mediation of relationship quality. Additionally, five propositions are derived accordingly based on the proposed model and literature review. Finally, discussion, limitation and future research are also provided.  相似文献   
10.
李哲峰 《价值工程》2010,29(31):229-230
近几年国家对于高校的投入逐年递增,而且增幅相当可观,各高校也有了不少经费可以用来购置大型仪器设备以完善实验室的建设与科研的发展。大型仪器设备同样也是一个实验室乃至整所高校科研实力的象征,是科研及技术开发的硬件基础,但是此类设备往往价格相对较高,为了保证采购质量,提高采购效益,强化监督机制,本文结合了在高校工作的实际情况,就各高校在大型仪器设备的采购过程中应把握的几个环节进行初步的思考与研究。  相似文献   
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