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Sharing economy platforms have been transforming production and consumption systems in cities around the world. While the sharing economy may contribute to addressing sustainability issues, its actual economic, social and environmental impacts remain poorly understood. Advancing more sustainably promising forms of sharing and leveraging its benefits, while circumventing its pitfalls, is becoming increasingly important in the era of Covid-19 and climate crisis, economic downturn and uncertainty, and loss of social connectedness, particularly in anonymous urban environments. The ways to capitalise on strengths of the sharing economy are still poorly understood. In particular, the roles and perspectives of users, businesses and municipal governments in institutionalising the sharing economy in various geographical contexts are essential to examine. This volume seeks to advance the research field by focusing on four research areas 1) understanding the sharing economy conceptually; 2) user perspectives on the sharing economy; 3) business perspective on the sharing economy; and 4) urban governance perspective on the sharing economy. The twenty articles in this volume discuss sustainability implications of the sharing economy from different perspectives, in various geographical contexts, and drawing on a range of disciplines. The volume makes a significant contribution by bringing in empirical findings from emerging and developing economies, including Brazil, China, Indonesia, Poland, the Philippines, South Korea, Thailand and Vietnam, thereby supplementing more frequently discussed perspectives from high-income countries. The volume also outlines the course for future research.Conventional research methods for understanding sources of individual differences in word-problem solving (WPS) only permit estimation of average relations between component processes and outcomes. The purpose of the present study was instead to examine whether and if so how the component processes engaged in WPS differ along the spectrum of WPS performance. Second graders (N = 1,130) from 126 classrooms in 17 schools were assessed on component processes (reasoning, in-class attentive behavior, working memory, language comprehension, calculation fluency, word reading) and WPS. Multilevel, unconditional quantile multiple regression indicated that 3 component processes, calculation fluency, language comprehension, and working memory, are engaged in WPS differentially depending on students' overall word-problem skill. The role of calculation fluency and language comprehension was stronger with more competent word-problem solving ability. By contrast, the role of working memory was stronger with intermediate-level than for strong problem solving. Results deepen insight into the role of these processes in WPS and provide the basis for hypothesizing how instructional strategies may be differentiated depending on students' overall level of WPS competence.Cruise tourism is permeating the global arena. With companies developing new ships/itineraries for the U.S. and China markets, understanding constraints to cruising for different cultures carries significant value for cruise tourism development. This study adopted longitudinal and cross-cultural approaches to validate constraint measures. Data were collected in the U.S. in 2008 and 2017 and in China in 2017, using the same set of constraint measures across different times and cultures. This multi-dimensional triangulation approach was deemed important for testing the robustness of a measurement scale and is believed to be the first of its type. Findings validate the cruising constraint instrument across time and cultures and provide theoretical and practical implications.In this paper, we construct an extended SIR model with agents optimally choosing outdoor activities. We calibrate the model and match it to the data from the United States. The model predicts the epidemic in the United States very well. Without government intervention, our simulation shows that the epidemic peaks on 22 March, 2020 and ends on 29 August, 2022. By the end of the epidemic, more than 21 million people will be infected, and the death toll is close to 3.8 million. We further conduct counterfactual experiments to evaluate the effectiveness of different polices against this pandemic. We find that no single policy can effectively suppress the epidemic, and the most effective policy is a hybrid policy with lockdown and broadening testing. BMH-21 datasheet Lockdown policy alone is ineffective in controlling the epidemic as agents would have optimally stayed at home anyway if the infection risk is high even without a lockdown. Broadening testing solely will accelerate the return to normal life as there are fewer infected people hanging around. However, as people do not internalize the social costs of returning to normal life, the epidemic could get even worse. Increasing medical capacity without any other measures only has temporary effects on reducing the death toll. We also find that random testing is too inefficient unless a majority of population is infected.Since the historical conception of psychopathy, researchers have been interested in understanding moral functioning among psychopathic individuals. The present study investigated the association between psychopathic traits and moral intuitions among incarcerated juvenile offenders (N = 178). Participants were assessed using the Psychopathy ChecklistYouth Version (Forth et al., 2003) and the Moral Foundations Questionnaire (Graham et al., 2011), which defines five core moral foundations Harm/care, Fairness/reciprocity, Ingroup/loyalty, Authority/respect, and Purity/sanctity. As expected, psychopathy in juvenile offenders negatively predicted endorsement of all five foundations. This study is the first to demonstrate broad abnormalities in Haidt et al.'s moral foundations in a juvenile sample and can help explain delinquent behavior in juveniles with psychopathic traits. Implications for theories of psychopathy are discussed.Refinement of a space of splines should yield additional degrees of freedom for modeling and engineering analysis, both along boundaries and in the interior. Yet such additional flexibility fails to materialize for multi-sided G 2 surface constructions when the polynomial degree is too low. This paper establishes a tight lower bound on the polynomial degree of flexibility-increasing refinable multi-sided G 2 surface constructions within a C 2 spline complex - by ruling out bi-5 constructions and by exhibiting a multi-sided bi-6 construction that yields good highlight line and curvature distributions. The bi-6 construction consists of one 2 × 2 macro-patch for each of the n sectors that join to form the multi-sided surface.
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