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31.
本文通过试验分析特细砂粒径,不同材质的特细砂的基本物理材性,采用现代混凝土配合比设计理念,研究了特细砂混凝土配合比的设计原则。通过分析砂率含量、用水量、高效外加剂对特细砂高性能混凝土在工作性和力学性能上的影响,确定砂率含量的范围;通过对特细河砂和天然特细山砂混凝土性能的对比试验,结果表明细砂完全可以替代天然中粗砂配制高性能高强度、高流动性泵送混凝土。 相似文献
32.
本文主要介绍了新形势下医院内审的范围及内容,并针对审计工作范围及内容扩大这一情况,提出了相应的解决对策。 相似文献
33.
本文通过对实例进行分析论述,解决了围岩受施工扰动和水长期浸润后开挖时不稳定问题,保证了隧道结构和施工安全,为同等或类似地质条件下的地下工程研究及施工提供借鉴和参考。 相似文献
34.
Genericide refers to situations where brands lose their legal protections due to the fact that their original name has become the generic term for a new category of products in the market that the brand first helped to create. Despite notorious instances of brands falling prey to this curse, marketing specialists—unlike lawyers—generally do not consider that the widespread use of a brand name represents any real danger and instead view it as a sign of brand strength. Herein, we take a new look at this debate, using a case study of Google to re-investigate the phenomenon of genericide. The article also offers managerial guidance on the most effective ways of developing genericization and avoiding genericide. It concludes by pointing out the need for brand managers to precisely differentiate between different types of brands and markets when deciding whether they should protect themselves from the risk of genericide or else encourage the genericization of their brand. 相似文献
35.
Does Size Matter? Evaluating Corporate Environmental Disclosure in the Australian Mining and Metal Industry: A Combined Approach of Quantity and Quality Measurement
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Ki‐Hoon Lee 《Business Strategy and the Environment》2017,26(2):209-223
There are an increasing number of companies in the mining and metals sector disclosing environmental sustainability information in their annual reports, sustainability reports and corporate internet web pages. However, there is ongoing debate about the relationship between the quantity and the quality of environmental disclosure. That is, does an increase in number equate to an increase in quality? This study investigates the relationship between the quantity and the quality of environmental disclosure reports. Using content analysis, we examine the environmental disclosure of 55 Australian mining and metal companies which are listed among the Australian Securities Exchange's (ASX) Top 100 mining and metal sector companies. We find that the size of firms influences both the quantity and the quality of corporate environmental disclosure. That is, we find that market capitalization is positively and significantly correlated to the quantity (number of words) and the quality of disclosure. We also confirm that there is a very highly significant, positive correlation between quantity (number of words) and quality of environmental disclosure. In order to investigate any differences between the top performing group and the bottom performing group in terms of environmental disclosure quality, further analysis also confirms that there is a positive relationship between the quantity and the quality of environmental disclosure. Copyright © 2015 John Wiley & Sons, Ltd and ERP Environment 相似文献
36.
分析了花土沟油田油井出砂特征,并根据花土沟油田地层特点制定了合理的防治措施,采用GFY-DMP低聚物进行了化学防砂现场试验,其恢复产能效果明显,防砂有效期长。 相似文献
37.
This paper reports the findings of a longitudinal comparative case study of three National Health Service (NHS) hospital Trusts in England, investigating the perceptions of clinical, managerial and accounting professionals towards changing cost accounting and performance measurement practices. It incorporates both qualitative and quantitative data analysis, and is based on a contextualist understanding of change management, utilising the content‐process‐context approach (Pettigrew and Lapsley, 1994) to investigate the influence of receptive versus non‐receptive contexts on change. The analysis reveals limited success in improving performance measurement practices (the content of change) in Trusts. Nevertheless the specific context within which change was operationalised was found to be very important, with central mangers playing a key role in influencing change. The process of change indicated slow shifts in clinical‐accountant‐managerial relations, partly driven by changes in financial flows within the organisations. 相似文献
38.
Knowledge of the mental representations that individuals hold about tourist destinations are important to understand their intentions. These mental destination representations have often been investigated by applying the concept of destination image. This study argues that the extant literature is often rather atheoretical and lacks operational rigor. These are major shortcomings which undoubtedly hinder the development of academic and managerial insights. In response, this study draws on contemporary psychology to develop the destination content model, comprising three informational components held in individuals‘ minds about destinations. The present study further outlines preferable methods and measures for each component, thus aiding researchers to investigate mental destination representations. 相似文献
39.
Shasha Lin 《Asia Pacific Journal of Tourism Research》2016,21(11):1241-1257
Tourism development is officially recognized by the Chinese central government as one of the strategic pillars of the country's economy. Hence, regional authorities are responsible for developing positioning strategies for their tourism destinations. This study investigates the following: (1) the variety of planned image positions among sub-provincial prefectures in China; (2) the commonalities of these image propositions across China and (3) the differences within and across the regions and provinces. This research is based on a representative sample of tourism development plans of 77 prefectural administrations. The texts (in Chinese language) were content analyzed and condensed in two steps into semantically similar terms and concepts. The results show that image-positioning objectives are generally lean in the planning documents lacking sophistication and creativity. The variety of used image terms tempts to believe in quite different positioning goals. Yet, from a compound perspective, this does not yield very distinct overall image positions. 相似文献
40.
Diego Aboal Valeria Arza Flavia Rovira 《Economics of Innovation and New Technology》2017,26(7):661-682
A large body of literature argues that the characteristics of exports matter for economic growth and development because some goods trigger positive externalities or are subject to increasing returns. Thus, for policy purposes, it is important to know whether a country’s export basket enjoys these productive opportunities. They have been associated with technological content of exports. However, measuring them is not easy. Previous methodologies to account for exports’ technological content used either R&;D data or trade data. The former is used to account for knowledge-intensive activities during the production phase and the latter to identify levels of ‘sophistication’ of exports based on exporting countries’ characteristics. Building on these contributions, this paper combines industry-based and product-based indicators to circumvent some of the shortcomings of the received literature, including the product-industry controversy (i.e. are the actual activities during the production process or the product characteristics what better accounts exports’ technological content?). We use data from Uruguay on direct and indirect R&;D spending from public and private sources and also trade data to build the sophistication index corrected by quality. We contrast our findings with existing methodologies to highlight our contribution. 相似文献