نتایج جستجو برای: nutrient return
تعداد نتایج: 146421 فیلتر نتایج به سال:
Nutrient cycling is a ubiquitous feature of ecosystems at all scales, allowing productivity to rise beyond the limits set by external nutrient inputs. Nutrient cycling occurs as a side-effect of the metabolism of a diverse set of species that each performs a step in the recycling loop. Recycling loops can be large and involve many steps. At each step the possibility exists for ‘side-reactions’ ...
Abstract: We analyze the relationship between return migration rates and the age profile of retirement within immigrant populations. Our simple theoretical model illustrates that under reasonable conditions the probability of return migration is maximized at retirement. This implies that different immigrant populations will have different retirement profiles, not only because individual retirem...
The emergence of third-generation, technology-based public bikeshare schemes offers new opportunities for researching cycling behaviour. In this study, data from one such scheme, the London Cycle Hire Scheme (LCHS), are analysed. Algorithms are developed for summarising and labelling cyclists’ usage behaviours and tailored visual analysis applications are designed for exploring their spatiotemp...
Introduction Conclusions References
Defending against Return-Oriented Programming
This paper describes the design of a high-efficiency vehicular roof-mounted antenna for wireless access for vehicular environment (WAVE) communication systems used for ubiquitous intelligent systems. The main objective of the ubiquitous intelligent system’s automotive IT technology is to enhance the connectivity among vehicles to ensure seamless communication and to reduce the initial access ti...
This paper analyzes the return migration of foreign-born persons in the United States. We argue that return migration may have been planned as part of an optimal life-cycle residential location sequence. Return migration also occurs because immigrants based their initial migration decision on erroneous information about opportunities in the United States. The study uses the 1980 Census and admi...
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