The lack of an assistance support may result in disturbance of coauthors by beginners who ask for help when they are in trouble to produce or reuse shared resources. Additionally, collaborators may not be sure if their respective production is consistent with the collaborative common conhibution. We tackle this issue by developing a group awareness knowledge based system that takes the responsi...

Induced defense is a common plant strategy in response to herbivory. Although abiotic damage, such as physical wounding, pruning, and heating, can induce plant defense, the effect of such damage by large-scale abiotic disturbances on induced defenses has not been explored and could have important consequences for plant survival facing future biotic disturbances. Historically, low-severity wildf...

Forest harvesting and wildfire were widespread in the upper Great Lakes region of North America during the early 20th century. We examined how long this legacy of disturbance constrains forest carbon (C) storage rates by quantifying C pools and fluxes after harvest and fire in a mixed deciduous forest chronosequence in northern lower Michigan, USA. Study plots ranged in age from 6 to 68 years a...

Title of Dissertation: DISTURBANCE BY FIRE AND ITS ROLE IN THE POPULATION BIOLOGY AND DISTRIBUTION OF A RARE TEMPERATE FOREST HERB Norman A. Bourg, Doctor of Philosophy, 2006 Dissertation directed by: Professor Douglas E. Gill Department of Biology This research comprises a comprehensive investigation of the role and effects of disturbance by fire on the population biology of turkeybeard (Xerop...

together with fire and mowing. The team found that native perennials reduced soil moisture, soil nitrogen, and light to lower levels than did exotic annuals. This ability to outcompete the exotic species for these resources means that native perennials should be able to increase in abundance. This suggests that the current rarity of native perennials at the researchers’ site is caused by native...

Concern towards power quality (PQ) has increased immensely due to the growing usage of high technology devices which are very sensitive towards voltage and current variations and the de-regulation of the electricity market. The impact of these voltage and current variations can lead to devices malfunction and production stoppages which lead to huge financial loss for the production company. The...

Abstract A fuzzy fractional-order PID control algorithm for a general type industrial temperature system is proposed in this paper. In order to improve the production quality and controlled model accuracy, elementary used describe process. The gain coefficients of controller updated online based on set rules which are defined by Mittag–Leffler functions follow fat-tailed distributions. Therefor...

The problem of disturbance rejection in the control of nonlinear systems with additive disturbance generated by some unforced nonlinear systems, was formulated and solved by {itshape Mukhopadhyay} and {itshape Narendra}, they applied the idea of increasing the order of the system, using neural networks the model of multilayer perceptron on several systems of varying complexity, so the objective...

Population dynamics tries to explain in a simple mechanistic way the variations of the size and structure of biological populations. In this dissertation we use mathematical modeling and analysis to study the various aspects of the dynamics of plant populations and their seed banks. In Chapter 2 we investigate the impact of structural model uncertainty by considering different nonlinear recruit...