Rhythmicity is prevalent in the cortical dynamics of diverse single and multicellular systems. Current models of cortical oscillations focus primarily on cytoskeleton-based feedbacks, but information on signals upstream of the actin cytoskeleton is limited. In addition, inhibitory mechanisms--especially local inhibitory mechanisms, which ensure proper spatial and kinetic controls of activation-...

We introduce an autoregressive-type model of prices in financial market taking into account the self-modulation effect. We find that traders are mainly using strategies with weighted feedbacks of past prices. These feedbacks are responsible for the slow diffusion in short times, apparent trends and power law distribution of price changes.

  Having in mind the high level of challenge in writing as a foreign language, this research provided Iranian EFL learners with audiovisual feedbacks as an alternative of common written feedback and focused on its’ meaningfulness in order to provide an incentive medium for the participants and increase their moti-vation. One hundred young adult female learners in addition to six English languag...

Collaborative recommendation has attracted various research works in recent years. However, an important problem setting, i.e., ‘‘a user examined several items but only rated a few’’, has not received much attention yet. We coin this problem heterogeneous collaborative recommendation (HCR) from the perspective of users’ heterogeneous feedbacks of implicit examinations and explicit ratings. In o...

Explicit formulas of smooth time-varying state feedbacks, which make the origin of an underactuated surface vessel globally uniformly asymptotically stable, are proposed. The construction of the feedback extensively relies on the backstepping approach. The feedbacks constructed are time-periodic functions.

We present our preliminary developments on a biofeedback interface for Western operatic style training, combining performance and result biofeedback. Electromyographic performance feedbacks, as well as formant-tuning result feedbacks are displayed visually, using continuously scrolling displays, or discrete post-trial evaluations. Our final aim is to investigate electroencephalographic (EEG) me...

Citation: Wilson J, Abboud S and Beman JM (2017) Primary Production, Community Respiration, and Net Community Production along Oxygen and Nutrient Gradients: Environmental Controls and Biogeochemical Feedbacks within and across “Marine Lakes”. Front. Mar. Sci. 4:12. doi: 10.3389/fmars.2017.00012 Primary Production, Community Respiration, and Net Community Production along Oxygen and Nutrient Gr...

For coupled human and natural systems (CHANS), sustainability can be defined operationally as a feasible, desirable set of flows (material, currency, information, energy, individuals, etc.) that can be maintained despite internal changes and changes in the environment. Sustainable development can be defined as the process by which CHANS can be moved toward sustainability. Specific indicators th...

An additional factor that is not as well studied, but potentially important is the ecological feedbacks between organisms and their local environment, whereby organisms modify the environment and aff ect the survival and reproduction of individuals that subsequently utilize the altered environment. Well-documented examples of organism – environment feedbacks include those between plants and soi...

Interactions between natural selection and environmental change are well recognized and sit at the core of ecology and evolutionary biology. Reciprocal interactions between ecology and evolution, eco-evolutionary feedbacks, are less well studied, even though they may be critical for understanding the evolution of biological diversity, the structure of communities and the function of ecosystems....