This paper introduces a robust task-space control scheme for a robotic system with an adaptive observer. The proposed approach does not require the availability of the system states and an adaptive observer is developed to estimate the state variables. These estimated states are then used in the control scheme. First, the dynamic model of a robot is derived. Next, an observer-based robust contr...

Action-predictive activity in macaque motor cortex is also modulated by the expected value of the action. This was demonstrated in [1]. There, experiments were performed where a visual cue indicated the value of an action in a planar center-out-reaching task. The task was similar to the task of Cisek and Kalaska (2005) in the sense that a visual cue indicated two of eight possible target direct...

this study explored the effect of contrastive phrase resynthesis instruction ongaining the teachability hypothesis stages in self-paced versus time-constrained oralproduction and recognition. three groups (i.e., 23 learners) of high beginner femalelearners in an english language institute were randomly selected from a cohort oflearners. one group received contrastive metalinguistic instruction ...

Studies have long investigated similarities and differences in men’s and women’s mate preferences. This study sought to expand on previous research by investigating whether mate value moderated participants’ design of mates. Using both a budgeted and a non-budgeted mate design task, we investigated the effect of mate value on the design of a mate. We found that mate value consistently predicted...

This paper describes the integration of nested data parallelism into Fortran 90. Unlike flat data parallelism, nested data parallelism directly provides means for handling irregular data structures and certain forms of control parallelism, such as divideand-conquer algorithms, thus enabling the programmer to express such algorithms far more naturally. Existing work deals with nested data parall...

We study the structural stability of tachyonic inflation against changes in the shape of the potential. Following Lidsey (Gen. Rel. Grav. 25, 399 (1993)), the concepts of rigidity and fragility are defined through a condition on the functional form of the Hubble factor. We find that the models are rigid in the sense that the attractor solutions never change as long as the conditions for inflati...

We assess the literature on public and private quality standards and their impact in food markets, international trade, and global supply chains. We focus on their effects on welfare, trade, industrial organization, and labor markets and with special attention to the North-South context. We also attempt to better characterize when these measures constitute protectionism, a complicate task. We l...

In this paper we investigate multi-task learning in the context of Gaussian Processes (GP). We propose a model that learns a shared covariance function on input-dependent features and a “free-form” covariance matrix over tasks. This allows for good flexibility when modelling inter-task dependencies while avoiding the need for large amounts of data for training. We show that under the assumption...

We consider an expert-sourcing problem where the owner of a task benefits from high quality opinions provided by experts. Execution of the task at an assured quality level in a cost effective manner becomes a mechanism design problem when the individual qualities are private information of the experts. The considered class of task execution problems falls into the category of interdependent val...