基于手机信令的城市道路交通状态实时预测

为准确、实时预测道路交通状态,通过分析影响交通的因素,利用决策树算法对速度和环境因素等数据进行建模,确定交通拥堵发生的规则,在此基础上结合实时的移动用户和环境因素数据对交通状态进行预测。以中国河北保定城区为例进行实验,验证了该方法的有效性。同时,研究发现,基于决策树算法进行道路交通状态预测的方法具有较好的扩展性。     

International franchise expansion of service chains: insights from the Spanish market

This paper attempts to identify the effects of several variables on the international expansion pursued by Spanish service franchise chains. These include: management and franchising experience, brand awareness, the international franchise ratio, and a franchisor's size. Specifically, the study looks at 125 franchisors doing business in 44 foreign countries in late 2009. Findings allow us to conclude that management and franchising experience, together with brand awareness, the international franchise ratio and company size are significantly associated with (i) the number of countries where the chain has a presence; (ii) the number of operational outlets the franchisor has abroad, and (iii) the number of years the chain has been operating overseas.     

Love is in the air. Consumers' perception of products from firms signaling their family nature

Signaling consumers that the company behind a brand is run by a family is increasingly observable in the marketing realm. One possible reason could be the emotional value signaled by the family nature of the firm. Brand signals carrying emotional value might contribute to a competitive advantage. Since we do not fully understand the effect of signaling the family nature of a firm yet and as family represents an emotional context, we examine this effect on consumer perceptions of the products being made with more love by conducting two experimental studies. In Study 1 (N = 371) we find that the firm's family nature triggers a strong perception of love being part of the production process of the brand, which leads to a higher willingness to pay. Specifically, in Study 2 (N = 280) we designed a process manipulation study to provide causative experimental explanation of the process of Study I. Thereby, we contribute to psychology and marketing research by showing that consumers consider a product signaling the family nature of a firm more strongly to be made with love and are willing to pay a price premium. This effect is driven by positive feelings related to one's own family.     

Evaluating China's Exchange Rate Regime

The U.S.in the last couple of years has been up in arms about China's exchange rate regime. In 1994 China established a de facto currency peg.The dollar-RMB ex- change rate was fixed at 8.28.The People's Bank of China(PBC)al- lowed the rate a narrow band of around .01 to.02 percent in which it could shift daily.The exchange rate program did not become newsworthy until U.S.Treasury Secretary John Snow's visit in 2003.In fact as a study by Frankel and Wei(2007) showed,the RMB's forward was actually selling at a discount against the dollar prior to Secretary Snow's visit to China     

Quality signaling via strikethrough prices

Why do firms often advertise their current price together with their past price? Although consumers expect high quality products to have high prices, such firms may optimally charge lower prices when faced with low production costs. Thus in markets in which quality is difficult to ascertain and costs often fall over time, for example technology products, high quality firms may face a challenge of signaling their quality through current price alone. In this paper we develop a price signaling model in which uninformed consumers draw inference not only from the current price but also the prior period's price (the “strikethrough price”) if the firm chooses to disclose it. We find that a high quality firm benefits from using strikethrough pricing when the prior probability of high quality is relatively low while the probability of costs falling is relatively high.     

The decision to advertise nonprofit accreditation status

Nonprofits seek accreditation to bolster their reputation and signal their worthiness to funders. The Better Business Bureau accredits nonprofits who pass 20 standards of accountability. Accredited organizations have the option to pay for the right to advertise their accredited status. At issue is why some organizations pay to advertise and other organizations do not. Utilizing a sample of 495 nonprofit organizations accredited by the Better Business Bureau, we find that nonprofits that pay to advertise the seal are larger, more profitable, have higher visibility, and are more likely to hire professional fundraisers. The results should be of interest to stakeholders and fundraisers interested in the adoption of methods to signal the accountability of nonprofit organizations.     

How relevant is the MBA: A revisit

The master of business administration (MBA) is the centerpiece of management education and holds the promise of systematically preparing its graduates for their managerial roles. However, there is escalating criticism that MBA programs are losing their relevance based on empirical evidence that competencies indicated by managers to be most critical are least represented in core MBA curricula. The authors re-examine the evidence and argue that the misalignment appears to be overstated. Consideration for relevance in preparing graduates for managerial roles needs to consider not only curricula, but also actual learning, social capital from the alumni network, and the signaling effect of graduating from an MBA program.     

Signaling about Norms: Socialization under Strategic Uncertainty

We consider a signaling model in which adults possess information about the dominant social norm. Children want to conform to whatever norm is dominant but, lacking accurate information, take the observed behavior of their parents as representative. We show that this causes a signaling distortion in adult behavior, even in the absence of conflicts of interest. Parents adopt attitudes that encourage their children to behave in a socially safe way (i.e., the way that would be optimal under maximum uncertainty about the prevailing social norm). We discuss applications to sexual attitudes, collective reputation, and trust.     

The Role of Collateral in the Credit Acquisition Process: Evidence from SME Lending

This study tests the simultaneous impact of observed characteristics and private information on debt term contracts in a multi‐period setting, using a dataset of 12,666 credit approvals by one major Portuguese commercial bank during 2007–2010. The main results show that borrowers with good credit scores that know they have a high probability of success and are unlikely to default are more willing to pledge collateral in return for a lower interest rate premium (IRP). Furthermore, lenders tailor the specific terms of the contract, increasing both collateral requirements and the IRP from observed risk, for borrowers operating in riskier industries and with less credit availability. The results are robust to controls for joint debt terms negotiation and the degree of collateralization offered by the borrower.     

Whom are you promoting? Positive voluntary public disclosures and executive turnover

Research summary: This paper uses signaling theory to bring together two complementary research streams that have largely ignored each other: strategic human resource management and media relations management. We argue that when publicly traded firms voluntarily and publicly disclose positive information about their value creation and appropriation activities, they also send positive signals to managerial labor markets regarding executives' capabilities. Accordingly, we hypothesize a positive association between public disclosures and voluntary executive turnover. An analysis of pharmaceutical and communications equipment firms from 1990 to 2004 supports this prediction, underscoring the need to understand better the effects of voluntary public disclosures on a firm's ability to protect its human capital. More generally, our results highlight the importance of considering the impact of a single signal on multiple receivers. Managerial summary: Given the organizational benefits of positive media coverage, the considerable effort that firms put into managing their image in the media is not surprising. We argue and show, however, that when a firm enhances its public image it also improves its executives' positions in the managerial labor market and, by so doing, increases their likelihood of voluntarily leaving the firm. In particular, we find that corporate press releases, an important mechanism for managing information released in the public domain to signal a firm's competitive advantages, may result in unintentional loss of senior management talent. This trade‐off suggests that firms should increase coordination between their strategy, human resources, and corporate communications/investor relations departments to ensure that they collectively weigh the benefits and costs of publicly disclosing value‐relevant information. Copyright © 2015 John Wiley & Sons, Ltd.