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This paper examines the relationship between stock price index and exchange rate in six African markets using monthly data for the period January 2007 to October 2015. A quantile regression approach is used. This methodology is shown to perform better than the ordinary least squares estimators, particularly when the conditional distribution is heterogeneous. Our empirical evidence reveals an interesting pattern in the association of these two financial markets in Africa, which shows that the negative relationship between stock and foreign exchange markets is more apparent when exchange rates are extremely low or high. The negative relationship between the two variables is in line with the portfolio balance effect.  相似文献   
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This study develops and tests arguments that the relationship between organizational creativity and market performance is channeled through new product development (NPD) capability, and that the indirect effect of creativity on performance, via NPD capability, is conditional upon levels of environment dynamism and market responsiveness. The proposed relationships are tested on a sample of 221 small‐ and medium‐sized enterprises (SMEs) in a major sub‐Saharan African market. Findings from the study indicate that process and product NPD capabilities partially mediate the effect of novelty and usefulness elements of organizational creativity on market performance. The study further finds that while environment dynamism weakens the indirect effects of novelty and usefulness of organizational creativity, via process and product NPD capabilities, on market performance, the effects are strengthened under conditions of greater responsiveness to target market needs. A theoretical contribution from this study is the finding that how organizational creativity dimensions drive market performance is more complex than previously thought: it depends on whether or not organizational creativity components are first used to develop an organization's process and product innovation capabilities, and whether target market environment conditions are dynamic and an organization has ability to respond to target market demands.  相似文献   
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Despite Africa’s potential for tourism, the continent’s tourism endowments are still largely underdeveloped and underutilized. The identification and enquiry into the drivers of international tourism demand in Africa is key to any effort to understand and explain changes in tourism demand in Africa. This study estimates a Poisson regression model to determine the key drivers of international tourism demand in 44 African countries, employing annual data over the period 1995–2015. The outcomes of the Poisson regression show that taste formation, real exchange rate, infrastructure, political stability and absence of violence, per capita income, FDI, and trade openness are significant drivers of international tourism into Africa. However, travel costs and domestic prices are not significant drivers of the decision to travel to Africa.  相似文献   
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ABSTRACT

In this paper, we explore the use of covariate balancing propensity scores (CBPS) in estimating the impact of the South African child support grant (CSG) on the height-for-age score of benefiting children. CBPS is a different approach to estimating propensity score, under CBPS the scores are estimated such that the estimation incorporates covariate balancing condition. This approach is therefore relatively robust to misspecification of the propensity score model which makes it ideal for this case study. We show that utilising the CBPS leads to treatment effect estimate that is larger and more precisely estimated than estimates that have been reported in the literature because the method exploits the dual function of propensity score. The effect of CSG under CBPS is as large as 44% of standard deviation on average. This implies that the effect of the grant cannot be regarded as small as previously reported in the literature.  相似文献   
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Teachers and Students worldwide often dance to the tune of tests and examinations. Assessments are powerful tools for catalyzing the achievement of educational goals, especially if done rightly. One of the tools for ‘doing it rightly’ is item analysis. The core objectives for this study, therefore, were: ascertaining the item difficulty and distractive indices of the university wide courses. A range of 112–1956 undergraduate students participated in this study. With the use of secondary data, the ex-post facto design was adopted for this project. In virtually all cases, majority of the items (ranging between 65% and 97% of the 70 items fielded in each course) did not meet psychometric standard in terms of difficulty and distractive indices and consequently needed to be moderated or deleted. Considering the importance of these courses, the need to apply item analyses when developing these tests was emphasized.  相似文献   
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With over 2.5 billion daily street food consumers globally, the consumption paradigm of the urban-informal-sector street food is shifting towards sustainable street food (SSF). This has led to the emerging SSF-market segment. The extended Theory of Planned Behavior (e-TPB), which incorporates the past behavior construct, is used to provide preliminary insight by unraveling behavioral predictors. The e-TPB research framework is premised on five key constructs - attitude, subjective norm, perceived behavioral control and past behavior. The framework was tested using primary data collected from 437 street food consumers drawn from three main urban cities in southeast Nigeria. Structural Equation Modeling (SEM) technique was used to analyze data. It is revealed that past behavior/experience does not necessarily connote patronage intention for sustainable street food. This study validates the utility of e-TPB for the prognosis of emerging consumer behavior. Recommendations and implications for marketing-related street food vending strategies are discussed.  相似文献   
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The empirical evidence about the temporal precedence between foreign direct investment (FDI) and economic growth in open developing economies is mixed. In this research effort, we explored the FDI-growth nexus for 16 developing countries of Latin American and the Caribbean countries during the last three decades, a period in which many of these countries introduced various economic and financial reforms. As a departure from many previous studies, the current analysis uses the Granger noncausality test procedure recently developed by Toda and Yamamoto (J Econ 66:225–250, 1995), and Dolado and Lutkepohl (Econ Rev 15:369–386, 1996)–TYDL. Our results suggest that the null hypothesis that ‘FDI does not Granger cause economic growth’ is rejected for all countries except Dominican Republic, Trinidad and Tobago, and Jamaica. There is also evidence of unidirectional causality from growth to FDI for all countries except Bolivia, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, and Jamaica. We found bidirectional causality for Argentina, Brazil, Mexico, Peru and Venezuela.  相似文献   
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Understanding how policies affect price transmission and incentives for producers and consumers along the complete value chain is a relevant research question due to the more globalized structure of agricultural value chains. In particular, Nigerian agricultural value chains have been targeted by a number of policy decisions. We analyze the import‐oriented palm oil value chain and the export‐oriented cacao value chain, estimating the price distortions from policies and their implications for production incentives at the regional level. For palm oil, due to protective trade policies and domestic initiatives, the nominal rate of protection (NRP) at the farmgate for palm oil producers shows that producers have been protected. NRPs at the border for cacao beans and cocoa products are negative, which may be due to a quality gap, the export market structure, and the concentration of buyers in global markets. Negative NRPs at the farmgate are seen for all regions, showing disincentives in the cacao beans export market reverberate through the domestic market despite domestic support policies. In both value chains, NRPs at farmgate vary across regions partially due to regional policy frameworks and partially due to local conditions impacting price transmission.  相似文献   
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