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1.
Making as a design-centered learning activity has recently received significant attention in education. We use literacies—how individuals use representations to learn—to explore the STEM literacy practices of experienced designers and makers. Describing makers’ representational practices in STEM contexts can inform the design of literacy supports for young makers that can encourage their use of representations to connect STEM disciplines and design practices. We interviewed experienced makers to describe one literacy practice central to design: identifying, organizing, and integrating information. Makers enacted this practice within specific making processes—e.g., designing—with the purpose of sourcing and navigating information related to their chosen problems. The research supports efforts to bridge learning while making with learning in schools by positioning STEM literacies as central practices involved in the processes of designing and making.  相似文献   
2.
This paper offers a new theory of limit pricing. Incumbents from different markets or regions "compete" against one another, with each attempting to price in a manner that deflects entry into the others' markets. An entrant is imperfectly informed as to the incumbents' respective investments in cost reduction and seeks to enter markets in which incumbents have high costs. In a focal equilibrium, the entrant uses a simple "comparison strategy," in which it enters only the highest-priced markets, and incumbents engage in limit-pricing behavior. The influence on pricing of the number of markets and the scope of entry is also reported. Throughout, the central feature of the analysis is that an incumbent's price affects its investment incentives, with lower prices being complementary to greater investment.  相似文献   
3.
The impact of skewness in the hedger's objective function is tested using a model of hedging derived from a third‐order Taylor Series approximation of expected utility. To determine the effect of price skewness upon hedging and speculation, analytical results are derived using an example of cotton storage. Findings suggest that when forward risk premiums and price skewness in the spot asset have opposite signs, speculation increases relative to the mean‐variance model. When the signs are identical, speculation will decrease, contradicting findings of mean‐variance models. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:503–520, 2006  相似文献   
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Research summary : We examine the relationship between the geographic concentration of a firm's sales and the firm's vulnerability to expropriation hazards. Although expanding outside the home location can initially increase a firm's exposure to government expropriation, we find that this effect reverses when a firm's sales outside its home location have reached a point at which it has sufficient resources to better influence government actions and to pose a credible threat to exit the market in which it is being targeted. We supplement this main result by identifying two moderating factors: the firm's level of political capital and the effectiveness of institutional constraints on government behavior. We find support for these hypotheses from survey data on privately owned enterprises in China. Managerial summary : This research advises firm managers that certain market activities might knock their firms' economic interests out of alignment with the government's political interests, and thus, influence the political hazards they face, particularly in emerging markets such as China, which has attracted strong interest of many firms with respect to entering the market. Here, all else being equal, the firms' geographic concentration exposes them to different levels of state expropriation—but not in a simple linear fashion as suggested by the conventional wisdom of local protectionism or that of the bargaining advantage generated by the threat of relocation: Those who are “stuck in the middle” ended up paying twice or even three times as much unauthorized levies as the purely local or the most expansive firms. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
6.
The Sustainable Tourism Attitude Scale (SUS-TAS) has been used as a tool to gauge the sentiment of local residents toward sustainable tourism development. This scale has been validated in cross-cultural settings by several scholars. In a like manner, in order to validate this scale, data were collected in the Cape Verde islands (off the coast of Africa) and the results showed (1) a parsimonious version of the 21-item SUS-TAS that facilitates the process of data collection without compromising its robustness and psychometric properties, (2) a validated second-order factor model, confirming that the seven factors of SUS-TAS can be loaded in two broader dimensions named “perceived tourism impacts” and “expected tourism sustainability”, (3) a SUS-TAS second-order factor model with validity in predicting residents’ support for sustainable tourism development, (4) that SUS-TAS can be interpreted by seven individual factors and/or as a global factor as indicated by the hierarchical measurement model and predictive validity. Methodological and theoretical interpretations are discussed and future refinement and applications are also offered.  相似文献   
7.
This study tests five potential drivers underlying the acceptance of SMS advertising. After developing a scale to measure behavioral responses to SMS advertising, the relationships between the acceptance of SMS advertising, intention to receive SMS advertising and behavioral responses to SMS advertising are tested. A convenience sampling method was employed. Survey questionnaires were distributed across Western Australia. The return yielded 203 usable questionnaires from the respondents. Several factors emerge as significant drivers of acceptance of SMS advertising including utility of SMS advertisements, context of SMS advertisements and attitudes to advertising in general. Contrary to expectation, control over SMS advertisements did not emerge as a significant driver for acceptance of SMS advertising. Trust in advertisers and laws did not emerge as a significant driver of the acceptance of SMS advertising among Australian respondents. Advertisers who pursue consumer acceptance should strive to build utility and context considerations into their SMS campaigns. Future research opportunities include testing the drivers of SMS advertising to further investigate the impact of control and trust on acceptance of SMS advertising in other countries where the SMS advertising has not been explored yet.  相似文献   
8.
While resident empowerment has been a central aspect of the sustainable tourism literature, difficulties of putting the concept into practice have been noted given the heterogeneous nature of communities. “Community” is often divided by kinship, age, gender and ethnicity, and such division may influence the perceptions of empowerment. The goal of this study was to better understand heterogeneous perceptions of empowerment by administering the Resident Empowerment through Tourism Scale within the community of Oizumi, Japan. Oizumi has the highest concentration of Brazilian immigrants in Japan, and the town has embraced “ethnic neighborhood tourism” centered on Brazilian culture as a strategy for economic development. Oizumi's demographic makeup allowed for testing differences in perceived empowerment between members of the dominant ethnic group (Japanese) and members of the ethnic minority group (Japanese Brazilians). Analysis of 650 completed questionnaires revealed that Brazilians felt more psychologically and socially empowered than Japanese residents, indicating a shift in the balance of power between the ethnic groups. Results also revealed that the political dimension of empowerment was rated relatively low among both groups, suggesting a general lack of opportunities to participate in the planning process. Implications for both practice and theory are presented.  相似文献   
9.
ABSTRACT

The effects of gender on involvement in high-risk recreation have received limited research attention despite mounting evidence suggesting the learned interactions between people and places likely vary for men and women. The purpose of this study was to provide insights into how gender influenced the motivation-involvement relationship among whitewater recreationists on a Wild and Scenic River in California. Our results revealed the motivations of Risk, Escape, Learning, and Achievement/Stimulation positively influenced involvement in rafting activities. Although gender did not influence all dimensions of involvement, we found that identity expression varied between subgroups. Specifically, men were more likely to ascribe meaning to rafting than women because this activity allowed them to affirm and express their individual character. The implications emanating from this study advance theoretical understanding of the factors that influence enduring involvement and inform natural resource management decisions about maintaining the desired benefits of activities sought by nature-based recreationists.  相似文献   
10.
Contract violations are ubiquitous. There has been little attention, however, dedicated to understanding the mechanisms involved in making sense of and addressing such occurrences. Two experimental studies investigated how people interpret contract violations and how these interpretations affect trust and the management of relationships. By drawing on the distinction between violations of the letter versus spirit of the law, we show that letter violations are more difficult to overcome than spirit violations, due to higher perceived intentionality. These effects generalized across different populations, levels of contracting experience, types of contracting contexts, levels of ambiguity within the contract, and degrees of contract complexity. The results yield important implications for understanding contract violations, trust, and organizational responses as a relationship management capability. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
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