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61.
搜索引擎优化技术(SEO)是网站运营的基本工作之一。本文指出链接优化在SEO中的重要地位,提出详细的面向搜索引擎的链接优化技术。 相似文献
62.
I. J. Bateman R. Brouwer S. Ferrini M. Schaafsma D. N. Barton A. Dubgaard B. Hasler S. Hime I. Liekens S. Navrud L. De Nocker R. ??eponavi?i��t? D. Sem?nien? 《Environmental and Resource Economics》2011,50(3):365-387
We implement a controlled, multi-site experiment to develop and test guidance principles for benefits transfers. These argue that when transferring across relatively similar sites, simple mean value transfers are to be preferred but that when sites are relatively dissimilar then value function transfers will yield lower errors. The paper also provides guidance on the appropriate specification of transferable value functions arguing that these should be developed from theoretical rather than ad-hoc statistical approaches. These principles are tested via a common format valuation study of water quality improvements across five countries. While this provides an idealised tested, results support the above principles and suggest directions for future transfer studies. 相似文献
63.
Todd?J.?Arnold Eric??Fang Robert?W.?Palmatier 《Journal of the Academy of Marketing Science》2011,39(2):234-251
The effect of a firm’s strategic focus on acquiring new customers and/or retaining existing customers (customer acquisition
and retention orientations) on innovation performance is evaluated. With dyadic primary data collected from 225 strategic
business units, the authors demonstrate that a firm’s focus on customer acquisition enhances its radical innovation performance
but hinders its incremental innovation; a firm’s strategic orientation toward customer retention has the opposite effects.
These effects are mediated by both customer knowledge development and the firm’s resource configuration decisions. In addition,
the authors provide insight into the impact of managerial decision trade-offs when implementing customer engagement strategies.
The results suggest that the effect of customer acquisition and retention orientations on customer knowledge and investment
decisions, and ultimately on innovation performance, is amplified when a firm consistently implements a specific engagement
strategy. Implementing a dual strategy by attempting to focus on both acquiring and retaining customers undermines resource
configuration decisions, with diverse effects on both radical and incremental innovation. 相似文献
64.
65.
In this paper we study the effect of downward social information in contribution decisions to fund public goods. We describe
the results of a field experiment run in conjunction with the fundraising campaigns of a public radio station. Renewing members
are presented with social information (information about another donor’s contribution) which is either above or below their
previous (last year’s) contribution. We find that respondents change their contribution in the direction of the social information;
increasing their contribution when the social information is above their previous contribution, and decreasing their contribution
when the social information is below. We hypothesize about the psychological motivations that may cause the results and test
these hypotheses by comparing the relative size of the upward and downward shifts. These results improve our understanding
of cooperation in public good provision and suggest differential costs and benefits to fundraisers in providing social information.
相似文献
66.
The dollars associated with training and development investments for organizations are considerable. Employers are unable
to recoup these expenditures if workers leave the firm before it has had an opportunity to realize the benefits of such training.
To assist businesses in maximizing their return on investments in human capital, it is suggested that training and development
professionals and legal counsel examine the applicability of preemployment agreements to recover their training expenses.
Such cost-sharing agreements—provided they are clear and narrowly written, reasonable, moderate, and serve legitimate business
interests—are permissible contracts that require employees to continue in service for a period of time or reimburse the organization
an agreed-upon sum if they leave before an agreed-upon time.
相似文献
William (Will) T. MawerEmail: |
67.
We introduce the optimal-drift model for the approximation of a lognormal stock price process by an accelerated binomial scheme. This model converges with order o(1/N), which is superior compared to today??s benchmark methods. Our approach is based on the observation that risk-neutral binomial schemes converge to the lognormal limit independently of the choice of the drift parameter. We verify the improved order of convergence by an asymptotic expansion of the binomial distribution function. Further, we show that the above result on drift invariance implies weak convergence of the binomial schemes suggested by Tian (in J. Futures Mark. 19, 817?C843, 1999) and Chang and Palmer (in Finance Stoch. 11, 91?C105, 2007). 相似文献
68.
文化产业本身既蕴含新兴产业又包含传统业态,这种特征决定了其未来增长路径的复杂性。产业集聚程度是产业效率的重要影响因素,产业效率是产业竞争力的重要体现,而文化产业的集聚效应表现尤为突出。理清文化产业集聚程度与文化产业发展效率之间的作用机理,有助于促进区域文化产业的发展和竞争实力的提升,对促进区域文化产业的发展效率提升具有重要的现实意义。因此,文章基于2011—2018年中国31个省(自治区、直辖市)的面板数据,关注文化产业发展过程中存在产业集聚以及空间、时间上的相关性,构建时空随机前沿模型进行技术效率测算。研究发现:2011—2018年全国文化产业技术效率呈整体下降趋势,空间交互作用及产业集聚对文化产业发展有促进作用,但文化产业表现出明显的惯性,影响了增长动能的传递;融资环境、市场环境、技术环境、制度环境对文化产业技术效率也存在显著影响。 相似文献
69.
We develop a dynamic tradeoff model to examine the importance of manager–shareholder conflicts in capital structure choice. In the model, firms face taxation, refinancing costs, and liquidation costs. Managers own a fraction of the firms’ equity, capture part of the free cash flow to equity as private benefits, and have control over financing decisions. Using data on leverage choices and the model's predictions for different statistical moments of leverage, we find that agency costs of 1.5% of equity value on average are sufficient to resolve the low‐leverage puzzle and to explain the dynamics of leverage ratios. Our estimates also reveal that agency costs vary significantly across firms and correlate with commonly used proxies for corporate governance. 相似文献
70.
This paper proposes a mechanism for the regulation of duopolies a revenue contests among the firms. Under the mechanism, the
firm with the lower revenue is to pay a penalty to the firm with the higher revenue proportional to the difference between
their revenues. In a homogenous good Cournot duopoly with convex cost and demand functions, the mechanism implements the optimal
outcome when the firms have symmetric costs. When one firm is more efficient, the mechanism leads to increased social surplus
under a large set of parameters. We also consider extensions that involve cost uncertainty, repeated games and differentiated
goods. 相似文献