Search results

This study aims to understand the extent to which a faculty development program that includes a week-long course design experience followed by sustained support changes new faculty's perceptions, beliefs and teaching practices. The authors employed the teacher professional knowledge and skill (TPK&S) framework and characteristics of effective educational development interventions to drive the program development, implementation and assessment.

This study utilized a mixed methods approach. Data sources include pre-/mid-/post-program responses to a validated survey, pre-/post-program course syllabi analyzed using a validated rubric and pre-/post-classroom observations collected using the Classroom Observation Protocol for Undergraduate STEM (COPUS) instrument.

Findings indicate transformative effects for participants' beliefs about their teaching and changes to their instructional practices. Significant and practical effects were observed across different portions of the program for increases in participants' self-efficacy, endorsement of a conceptual change approach toward teaching and perceptions of institutional support. Participants produced more learning-focused syllabi and many moved toward more student-centered instructional approaches in their teaching practices.

Due to the voluntary nature of the new faculty development program, this study may have been limited by participant self-selection bias and differential sample sizes for the study's individual measures. Future research should consider designs which maximize faculty participation in measurement across all data sources.

This study addresses shortcomings in prior studies which utilized limited data sources to measure intervention impact and answers the call for more rigorous research to obtain a more complete picture of instructional development in higher education.

Novel aircraft propulsion configurations require a greater integration of the propulsive system with the airframe. As a consequence of the closer integration of the propulsive system, higher levels of flow distortion at the fan face are expected. This distortion will propagate through the fan and penalize the system performance. This will also modify the exhaust design requirements. This paper aims to propose a methodology for the aerodynamic optimization of the exhaust for novel embedded propulsive systems. To model the distortion transfer, a low order throughflow fan model is included.

As the case study a 2D axisymmetric aft-mounted annular boundary layer ingestion (BLI) propulsor is used. An automated computational fluid dynamics approach is applied with a parametric definition of the design space. A throughflow body force model for the fan is implemented and validated for 2D axisymmetric and 3D flows. A multi-objective optimization based on evolutionary algorithms is used for the exhaust design.

By the application of the optimization methodology, a maximum benefit of approximately 0.32% of the total aircraft required thrust was observed by the application of compact exhaust designs. Furthermore, for the embedded system, it is observed that the design of the compact exhaust and the nacelle afterbody have a considerable impact on the aerodynamic performance.

This paper presents a novel approach for the exhaust design of embedded propulsive systems in novel aircraft configurations. To the best of the authors’ knowledge, this is the first detailed optimization of the exhaust system on an annular aft-mounted BLI propulsor.

In the last few years, information and communication technologies (ICTs) and social media have become increasingly relevant to politicians and political parties alike, often used to issue statements or campaigning, among others. At the same time, many citizens have become more involved in politics, partly due to the highly interactive and social environments that the social networking services (SNS) provide. Political events flow through these networks, influencing their users; such events, however, often start offline (outside the online platform) and are, therefore, hard to track. Event studies, a methodology often used in financial and economic studies, can be translated to social networks to help modeling the effect of external events in the network. In the present case, the event study methodology is applied to two sample cases: the tariff war between the United States and China, with multiple responses and retaliations from both sides, and the Brexit referendum. In both cases, the Twitter social networks that arise from users who discuss the respective subjects are analyzed to examine how political events shape and modify the network. Results show how event studies, combined with the possibilities offered by the ICTs both in data retrieval and analysis, can be applied to understand the effect of external political events, allowing researchers to quantitatively track, observe, and analyze the spread of political information over social network platforms. This is a first step toward obtaining a better understanding on how political messages are diffused over social networks and their effects in the network structures and behaviors.

The paper reviews existing empirical research where long-term performance (LTP) of firms is the dependent variable. The purpose of this paper is to structure and classify the existing research, outline the shortcomings, and chart the avenues for future research in the area of LTP.

The paper is a review of the existing empirical literature. It surveys the existing studies and proposes new directions of empirical research.

The paper argues that there is a disconnection between the principal theories in strategy and the existing empirical findings. In particular, while the resource-based view (RBV) and dynamic capabilities view aim to predict sustainable competitive advantage and sustainable firm performance, few empirical papers examine the LTP consequences of resources and dynamic capabilities.

The paper shows where future research efforts should be concentrated by outlining shortcomings in existing research.

The paper compares ways to measure LTP that will be useful to corporate executives. The paper also outlines factors that have been shown to affect LTP. These findings can be used by executives planning their strategy.

The paper is a first review of LTP. It also contributes to the debate in strategy on the RBV and dynamic capabilities.

Sports leagues, such as Major League Soccer (MLS), aim at expanding their audience at global level through alternative media other than television (TV). Brazil stands out among football media consumer audiences as one of the main markets worldwide. Brazilian MLS consumers play the role of fans to converge between TV media and digital platforms, in a phenomenon that has been called Social TV.

The aim of the current research is to investigate how Brazilian MLS fans' consumption process is established through Social TV; it was done based on netnography performed between 2018 and 2020.

Results have indicated that Social TV is a catalyst of practices associated with fan culture: cultural convergence, technologies appropriations, poaching experiences and production of a collective intelligence.

Current research reinforces how ethnography methodology has been gaining room as likely consumer market research, working as alternative method based on the prevalence of focus group and survey techniques.

Social TV phenomenon presents itself as a possibility to expand and direct marketing strategies focused on sports management, just as the media often consumed by fans.

From the results, it is possible assuming that connections between fans are punctually guided by their relationship with the cultural object consumed by them in a network relationship whose actors deindividualize sociocultural practices such as consumption. Thus, the main contribution of the study lies on identifying how fan culture can be autonomously established in the market arena in comparison to other cultures.

Aerodynamic shape optimisation is complex because of the high dimensionality of the problem, the associated non-linearity and its large computational cost. These three aspects have an impact on the overall time of the design process. To overcome these challenges, this paper aims to develop a method for transonic aerodynamic design with dimensionality reduction and multifidelity techniques.

The developed methodology is used for the optimisation of an installed civil ultra-high bypass ratio aero-engine nacelle. As such, the effects of airframe-engine integration are considered during the optimisation routine. The active subspace method is applied to reduce the dimensionality of the problem from 32 to 2 design variables with a database compiled with Euler computational fluid dynamics (CFD) calculations. In the reduced dimensional space, a co-Kriging model is built to combine Euler lower-fidelity and Reynolds-averaged Navier stokes higher-fidelity CFD evaluations.

Relative to a baseline aero-engine nacelle derived from an isolated optimisation process, the proposed method yielded a non-axisymmetric nacelle configuration with an increment in net vehicle force of 0.65% of the nominal standard net thrust.

This work investigates the viability of CFD optimisation through a combination of dimensionality reduction and multifidelity method and demonstrates that the developed methodology enables the optimisation of complex aerodynamic problems.

This study aims to explore the use and perceptions of social media among university students before and during their transition from high school to higher education.

This exploratory, cross-sectional study uses an online survey of 312 undergraduate students at a large public research university in the USA.

Active participation was prevalent for connecting with peers, while passive use was high when learning about university-related topics. While at university, social media was most useful for finding campus events and connecting with classmates, but least effective for connecting with instructors. Most participants experienced meaningful change in their social media use from high school to university, which is often attributed to personal growth. Social media intensity correlated weakly but positively with usefulness and sense of belonging.

The study’s sample from a single university limits generalizability. While similar institutions might show comparable results, variations due to student demographics and differing institutional practices could emerge. The retrospective approach for reporting high school behaviors also poses a limitation. Future research could longitudinally follow students from university search to enrollment and attendance.

The study recommends universities adjust social media strategies by prioritizing social content, using student ambassadors and customizing feeds. Universities should support students both online and offline, recognizing diverse pathways to belonging.

This study examines the transition period by asking university students to retrospectively reflect on high school experiences and also report current experiences. It also offers insights into student perceptions of whether their social media use has changed in meaningful ways.

The purpose of this paper is to compare the extended brand identities of two elite female athletes. Specifically, this exploratory case study assessed the extended brand identities of Jennie Finch and Cat Osterman, two iconic female softball athlete brands.

Through the qualitative analysis of individual in-depth, semi-structured interviews, various documents, and social media, data revealed themes associated with positioning, personality, and presentation of the female athlete brands.

Theoretically, the themes provide empirical support for existing brand identity frameworks.

Practically, findings provide evidence for defining an athlete’s extended brand identity that can serve as the foundation for branding efforts that generate long-term value during and after their sport careers.

This case study adds to the extant literature on athlete branding and offers practical content for marketers seeking to brand female athletes.

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Memoranda of the United States National Advisory Committee for Aeronautics and publications of other similar Research Bodies as issued.

In this chapter, we embrace the recent phenomenon of early internationalizing firms with the goal of understanding these firms in light of decades of research on multinational firms, which has long stressed liabilities of foreignness. It is often implicitly assumed that the only way to reduce liabilities of foreignness is by doing business in foreign markets and learning about the local business environment. However, in this chapter, we focus on several distinctive antecedent firm characteristics that have been shown to facilitate early international expansion by firms, but which are not commonly considered in the international business literature. We perform a systematic review of the literature on early internationalizing firms (following David & Han, 2004), based on the seminal work of Oviatt and McDougall (1994) to guide our analysis of early internationalizing firms and to identify important ways in which these firms differ from multinational firms. We argue that long-standing arguments about the impact of liabilities of foreignness on firm foreign expansion apply to newly internationalizing firms, but that these liabilities are reduced by the experiences and knowledge of the founders and top managers in these firms acquired prior to the inception of these firms.