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81.
系统建立了三维仿真框架,建立了三维空间属性模型和非空间属性模型,分别对空间数据和非空间数据进行储存和管理。并建立了Hardy-Cross迭代模型和离散反馈型神经网络模型优化通风网络模型。并以C#语言来实现系统的功能。 相似文献
82.
导线测量是建立国家大地控制网的一种方法,也是工程测量中建立控制点的常用方法,作者根据自己实际的工程经验,提出导线测量中应注意的几个关键问题。 相似文献
83.
Rebecca Pera 《旅游业当前问题》2017,20(4):331-338
The work proposes a theoretical and empirical model that investigates how storytelling is a powerful co-creative behaviour in tourism. The contribution takes a step forward from the classical theories on co-creation and develops the case where consumers act almost independently from traditional brands. The empirical study adopts an interpretive approach to analyse online travel reviews. Data are interpreted through Yi and Gong's model on consumer value co-creation behaviour [(2013). Customer value co-creation behavior: Scale development and validation. Journal of Business Research, 66, 127], the Phase dynamics theory of travel epiphany behaviour [Woodside, A. G., & Megehee, C. M. (2010). Advancing consumer behaviour theory in tourism via visual narrative art. International Journal of Tourism Research, 12(5), 418–431], and the Archetype theory [Woodside, A. G., Sood, S., & Miller, K. E. (2008). When consumers and brands talk: Storytelling theory and research. Psychology & Marketing, 25(2), 97–145]. The study indicates that storytelling behaviours in value co-creation activate a ‘customer delight' response, which is an affect-based construct. 相似文献
84.
In recent years, numerous articles have addressed management strategies aimed at assisting forests to adapt to climate change. However, these seldom take into account the practical and economic implications of implementing these strategies, notably, supply of forest plants and seed. Using semi-structured interviews with practitioners involved in the plant and seed supply chain in Great Britain, we highlight a series of practical and economic bottlenecks commonly encountered in the supply of locally sourced seed and domestically produced planting stock for native woodland and hedging markets. We find that adoption of alternative seed sourcing strategies, designed specifically to account for directional climate warming, is likely to exacerbate existing problems by adding further complexity to decisions nurseries make about tree species and seed origins to produce. The lack of long-term market predictability brought about by the current configuration of forestry grants and regulations and, in particular, the administrative systems for processing grant applications is identified as a major impediment to having a sustainable and competitive supply of home-grown and currently adapted planting stock. Finally, the time and effort it takes to supply healthy plants for native woodland creation projects deserves much wider recognition throughout the industry and will be crucial if planting objectives are to be met sustainably. 相似文献
85.
The empirical results of the risk-return relationship are mixed for both mature and merging markets. In this paper, we develop a new volatility model to revisit the risk-return relation of the aggregate stock market index by extending the Realized GARCH model of Hansen et al. (2012) with the Wang and Yang (2013) framework, in which the overall risk-return relation is decomposed into a risk premium and a volatility feedback effect. An empirical analysis of three major Chinese stock indices reveals positive risk premium and negative volatility feedback effect, and those findings are stable across different markets and sub-samples. However, their relative magnitudes differ between markets and varies through time. 相似文献
86.
本文通过对学院实训基地的调研,总结目前甘肃钢铁职业技术学院校企合作的现状、存在的问题,进而分析所应该采取的措施。 相似文献
87.
《武汉市经济管理干部学院学报》2014,(6):15-18
为科学准确地反映2014年我国入境旅游业发展的总体状况,国家旅游局统一部署、省旅游局组织实施了"入境游客花费情况抽样调查"。本次调查是纳入《旅游统计调查制度》的国家调查项目,问卷按6种语种(即中、英、法、日、韩、俄)印刷,课题组完成了2014年武汉市入境游客抽样调查与分析报告。 相似文献
88.
M.R. Martinez-Torres M.C. Diaz-Fernandez 《Technology Analysis & Strategic Management》2014,26(1):55-68
Open source software (OSS) projects represent a new paradigm of software creation and development based on hundreds or even thousands of developers and users organised in the form of a virtual community. The success of an OSS project is closely linked to the successful organisation and development of the virtual community of support group. This paper reviews different fields and research topics related to the OSS communities such as collective intelligence, the structure of OSS communities, their success, communities as virtual organisations, motivation, shared knowledge, innovation and learning. The main challenges, results obtained, and the knowledge areas are detailed for each topic. 相似文献
89.
水利工程是国民经济建设过程中非常重要的建设内容,能够为人们的生产生活提供极大的便利,这就需要保证水利工程测量工作的准确性。在水利工程测量过程中,常用的测量工具就是全站仪,做好其误差分析与精度控制工作是非常必要的,本文就主要针对此予以简单分析。 相似文献
90.
Iryna Pentina Ainsworth Anthony Bailey Lixuan Zhang 《Journal of Marketing Communications》2018,24(2):125-145
This study is among the first to investigate the impact of message, source, and receiver characteristics on user attitudes toward Yelp reviews, with the subsequent impact of these attitudinal evaluations on review persuasiveness. Specifically, it examines the roles of review valence (positive/negative) and sidedness (one-sided/two-sided), as well as perceived similarity with the reviewer, on user perceptions of helpfulness, trustworthiness, and credibility of the review. The study also tests moderating effects of perceived source similarity and user regulatory focus on the relationships among message characteristics, attitudinal variables, and purchase intentions. Our results disconfirm the negativity bias reported in previous studies and indicate that positive reviews are perceived as more trustworthy, credible, and helpful than negative or two-sided reviews. Review helpfulness and credibility, in turn, positively impacts its persuasiveness, with regulatory focus playing a complex nuanced role in the persuasiveness – behavioral intentions relationship. Based on the findings, future research avenues and managerial implications are proposed. 相似文献