Search results

This paper aims to analyze the viability of a solar power system as a supplemental power source for commercial and business aircraft.

First, a model is established to estimate the potential available power from suitable aircraft surfaces for various meteorological conditions, ground and flight mission characteristics. A proposed aircraft system architecture and an associated parametric conceptual sizing model are presented. This supplemental solar power system sizing model is integrated into an aircraft multidisciplinary design optimization environment to evaluate the aircraft-level impact on mission fuel burn. A parametric study for a business jet aircraft is performed to analyze various solar cell types and power densities for converters. Trade-off studies are performed between efficiency and weight.

Considering today’s efficiency and power-to-weight ratio of the system components, overall fuel burn reduction can be achieved. Therefore, the technology development work can start now to target short to mid-term applications. In addition, promising system integration scenarios are identified, such as the use of solar power for autonomous operation of the air conditioning system on ground, which yield potential further benefit. In conclusion, a supplemental solar power system seems a promising candidate for more efficient aircraft operation.

The presented novel supplemental solar power system architecture concept and its foreseen aircraft integration show potential benefits for near term applications. The results show that the break even for this technology is already reached and therefore build the foundation to further investigate the technology integration challenges. Clear directions for future research and development are outlined enabling the advancement of the technology readiness level.

In this chapter, we assume the following: (1) the root cause of most organizational problems is culture and leadership, (2) executives seldom want to deal with these root causes, (3) because life is uncertain, organizational change is an emergent process, (4) most change processes unfold by reconstructing social reality, (5) the change process is inherently relational, (6) effective change efforts are enhanced by increasing the virtue of the actors, (7) change is embedded in the learning that flows from high-quality relationships, and (8) change agents may have to transcend conventional, economic exchange norms in order to demonstrate integrity and to build trust and openness. Drawing on the field of positive organizational scholarship, we focus on the change agent. We review the literature on self-change and offer several paths for becoming a positive leader.

The relationship between tourism development and its impacts on resident attitudes toward tourism has been widely discussed in literature. Not much attention, however, has been paid to residents’ role in tourism from the perspective of place identity theories. Based on a conceptual framework introduced by Palme, Koenig-Lewis, and Jones, this study applied the social identity theory in examining the relationship between resident’s place-based social identity and support for tourism. The results showed that both the cognitive and affective social identity components had significant effects on resident’s conative attitudes of support for tourism. What remains unsolved is which component is more significant and should be targeted in destination marketing. Theoretical and practical implications were discussed and recommended.

Social entrepreneurship is a multidimensional construct, with social value creation lying at its core. Innovativeness and venturesomeness are the prominent decision-making characteristics that facilitate value creation by social enterprises (SEs). Sustainability goals can be attained better with synergistic operations of the two entities. Both SEs and SDGs aim at creating values for overall well-being, however discrepancies in interpreting and measuring the values created, leads to problems in achieving operational integration between the two.

This chapter comprehends the nature of values created by SEs. It further examines the scope and benefit of integration between SEs and SDGs for creating better value propositions. Methodology of the research included extant review of literature and relevant frameworks to comprehend concepts of SEs and SDGs. To examine practical aspects of value creation, in-depth interviews were conducted with social entrepreneurs. The chapter concludes that SDGs resonate strongly with work of many SEs due to the basic nature of their mission and objectives. However, there is ambiguity regarding how integration between the two entities can be effectively operationalized. The way forward for value creation through SEs-SDGs integration in post-COVID times is discussed. For sustenance and growth in complex times, along with emphasis on traditional values, SEs and SDGs will have to focus on creating strategic values through active collaboration and synergy. Impact reporting is critical, but additionally, core managerial and operational activities of SEs and SDGs must also orient cohesively. The chapter proposes an integrated framework for systematic alignment of SEs and SDGs missions, objectives, resource management, mobilization, networking etc. for purposeful collaborations.

Blues music is in the midst of its second revival in popularity in roughly thirty years. The year 1960 can be identified, with some qualification, as a reference point for the first rise in international awareness and appreciation of the blues. This first period of wide‐spread white interest in the blues continued until the early seventies, while the current revival began in the middle 1980s. During both periods a sizeable literature on the blues has appeared. This article provides a thumbnail sketch of the popularity of the blues, followed by a description of scholarly and critical literature devoted to the music. Documentary and instructional materials in audio and video formats are also discussed. Recommendations are made for library collections and a list of selected sources is included at the end of the article.

Almost all libraries collect fiction. Of course the nature, scope, and organization of the collection varies with the type of library and its clientele. In this column scholars, fans, and just plain readers of diverse fiction formats, types, and genres will explore their specialty with a view to the collection building needs of various types of libraries. In addition to lists of “good reads,” authors not to be missed, rising stars, and rediscovered geniuses, columnists will cover major critics, bibliographies, relevant journals and organizations, publishers, and trends. Each column will include a genre overview, a discussion of access to published works, and a core collection of recommended books and authors. Janice M. Bogstad leads off with a discussion of science fiction. In the next issue of Collection Building, Ian will focus her discussion on the growing body of feminist science fiction with an article entitled, “Redressing an Interval Balance: Women and Science Fiction, 1965–1983.” Issues to follow will feature Kathleen Heim on thrillers, and Rhea Rubin reviewing short story collection building. Should you care to suggest an area or aspect of fiction collection building for discussion or try your hand as a columnist contact the column editor through Neal‐Schuman Publishers.

Blockchains used by e-commerce consortia are a novel form of governance that facilitates coordination and collaboration among the numerous organisations that comprise e-commerce supply chains. Despite the increasing prevalence of consortium blockchain networks for e-commerce, there is a limited understanding of the economic and social dynamics that influence the behaviour of blockchain consortium members. By utilising transaction cost theory and social exchange theory, this research investigates the interplay between blockchain transaction-specific investment (BTSI), trust, adaptive collaboration (ADC) and the overall performance of supply chains in consortium blockchains

A quantitative research approach was employed to collect data from a representative sample of blockchain organisations affiliated with e-commerce consortium blockchains worldwide. Following this, the data obtained from 361 participants were analysed using descriptive and inferential statistics.

The results of our study indicate that BTSI has a substantial impact on trust. Furthermore, trust plays a pivotal role in shaping ADC, and ADC, in turn, acts as a mediator in the relationship between trust and performance outcomes.

This study underlines these economic and social dynamics in the evolving context of consortium blockchain networks, offering insights into their significance within a technology-driven environment.

Although the topic of span of control (SOC) has been discussed in detail in management literature and education, less focus has been placed on the decline research since the 1970s and, thus, the future relevance of the concept. By providing a historical overview of the literature on SOC through the work of key management scholars, this paper aims to explain why the literatures’ coverage of the topic has been significantly diminished in recent decades and offers suggestions as to why further research on the topic is needed.

The authors provide a historical literature review and analysis on the decline of SOC as a construct of interest.

The findings of the paper include a brief analysis of SOC. The concept was a very strong concept that declined as management became more scientific, rejecting classical management theory. This rejection occurred because SOC was impacted by multiple factors making it impossible to effectively study, making it imprecise. Likewise, SOC is too applied and lacked theoretical relevance. However, SOC still has value, especially when paired with a theory such as leader-member-exchange (LMX).

The authors argue that SOC is still relevant today and management scholars should align its study with its practice in modern organizational structures. However, its focus needs to change and be added to other theories such as LMX.