This letter introduced a new R package ‘coexist’ which can perform species coexistence simulation and analysis. The package was initially developed for understanding the role of different combinations of varying species growth rates, dispersal ability, habitat heterogeneity, and competition interaction on influencing species coexistence under fluctuating environment. Further versions could intr...

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Teaching software developer skills should be a fundamental part of software engineering curriculum. The current industry relies on evolutionary and agile processes that add one feature or property at a time. The main task of these processes is software change. Results of the recent research allow this topic to be taught on both undergraduate and graduate level. Phased model of software change (...

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation, with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of this license can be found at http://www.fsf.org/copyleft/fdl.html. Revision History Revision 0.22.0 1...

Positive resists form an indene carboxylic acid during exposure making them soluble in aqueous alkaline solutions. Therefore, positive resists develop where they have been exposed, while the unexposed areas remain on the substrate. Since positive resists do not cross-link, the resist structures rounden beyond their softening point of typically 100-130°C. Negative resists such as the AZ® nLOF 20...

We investigate the privacy compliance processes followed by developers of child-directed mobile apps. While children’s online laws have existed for decades in US, prior research found relatively low rates compliance. Yet, little is known about how issues come to exist and can be improved address them. Our results, based on surveys (n = 127) interviews 27), suggest that most rely app markets ide...

† Department of Computer Science and Engineering, University at Buffalo, SUNY ‡ Department of Computer Science, Canisius College Abstract  Educators wishing to use e-learning materials must choose between homegrown solutions and off-the-shelf materials. Each choice has distinct benefits and drawbacks. Handcrafted materials are often expensive to develop and maintain, yet their content will lik...

objective of all system providers, as it is for all power-generation systems. It can be achieved by increasing the system efficiency (that is, reducing the collection area, which is a major cost driver) and by reducing materials, production and installation costs. For example, owing to an impressive materials and production cost reduction in the past few years, the LEC of flat non-concentrating...