Tropical rainforests are considered as hotspots for bird diversity, yet little is known about the system that upholds the coexistence of species. Differences in body size that are associated with foraging strategies and spatial distribution are believed to promote the coexistence of closely related species by reducing competition. However, the fact that many babbler species do not differ signif...

T study investigates the effects of turning terabytes of raw retail data into managerial insights (i.e., downstream information acquisition) in a strategic channel setting. Two effects of information acquisition are identified—the efficiency effect that improves retail pricing decision making in an uncertain environment, and the strategic effect whereby the retailer voluntarily discloses the ac...

Those who would defend the possibility of objective normative properties owe us plausible examples of what such a property might be, how our normative discourse and practices might reflect or be shaped by it, and how we might be able to speak of it and know it. Discussions of normativity have tended to focus on deontic or directive (ought/ought not) judgments rather than evaluative (good/bad) j...

Mixed-species foraging associations may form to enhance feeding success or to avoid predators. We report the costs and consequences of an unusual foraging association between an endemic foliage gleaning tupaid (Nicobar treeshrew Tupaia nicobarica) and two species of birds; one an insectivorous commensal (greater racket-tailed drongo Dicrurus paradiseus) and the other a diurnal raptor and potent...

According to conventional wisdom, planning for the future is becoming more difficult due to anthropogenic climate change. As the story goes, it is possible that a plan may be made anticipating one climate future and then disaster results when another future climate unfolds. In practice, it is often possible to assess risks and develop robust strategies that arise due to climate uncertainties th...

It is not uncommon for different species within a guild to be non-randomly segregated within a landscape through the occupation of different preferred macrohabitats. The explanation most amenable with ecological theory is that different guild members are adapted for exploiting the different opportunities offered by such macrohabitats. Morphological characters are possible adaptations reflecting...

Satellite communication constitutes a promising solution for the sixth generation (6 G) wireless networks in terms of providing global services. In order to provide cost-effective satellite network, we propose novel medium-earth-orbit (MEO) aided integrated-navigation-and-communication (INAC) network. To overcome severe path loss MEO satellites, conceive network simultaneous serving navigation ...

Abstract To accommodate the stringent requirements of enhanced coverage quality and improved spectral efficiency, simultaneous transmitting reflecting reconfigurable intelligent surface (STAR-RIS)-aided communication has been perceived as an interesting research topic. This paper investigates a downlink STAR-RIS-aided non-orthogonal multiple access (NOMA) system, where STAR-RIS is deployed to e...

Trust relationships occur naturally in many diverse contexts such as collaborative systems, e-commerce, interpersonal interactions, social networks, and semantic sensor web. As agents providing content and services become increasingly removed from the agents that consume them, the issue of robust trust inference and update becomes critical. There is a need to find online substitutes for traditi...