Postural control is crucial for most tasks of daily living, delineating postural orientation and balance, with its main goal of fall prevention. Nevertheless, falls are common events, and have been associated with deficits in muscle strength and dynamic postural stability. Recent studies reported on improvements in rate of force development and static postural control evoked by jaw clenching ac...

-A new configuration for compression-shear soft-recovery experiments is presented. This technique is used to investigate various failure mechanisms during dynamic multiaxial loading of an AI203/SiC nanocomposite and TiB2. Velocity profiles of the target surface are measured with a variable sensitivity displacement interferometer, yielding normal and transverse velocity-time histories. A dynamic...

Policy engineering for access-control security has traditionally focused on specification and verification of safety properties (“nothing bad happens”). In most real systems however, resources and access mechanisms are regularly compromised, either maliciously by attackers, or inadvertently due to vulnerabilities caused by poor systems-engineering. I argue that the all-or-nothing nature of assu...

Sparse signal priors help in a variety of modern signal processing tasks. In a typical sparse recovery problem, a sparse signal needs to be recovered from an underdetermined system of equations. For example, sparse representation of signal in an overcomplete dictionary or reconstruction of a sparse signal from a small number of linear measurements. In recent years, several results have been pre...

OBJECTIVE To determine the effect of vestibular exercises on the recovery of visual acuity during head movement in patients with bilateral vestibular hypofunction (BVH). DESIGN Prospective, randomized, double-blinded study. SETTING Outpatient clinic, academic setting. PATIENTS Thirteen patients with BVH, aged 47 to 73 years. INTERVENTION One group (8 patients) performed vestibular exerc...

ning system (the ELMER system) which already has many features for preventing execution errors but has few features for handling errors that can’t be prevented. The error handling techniques presented in this paper depend for their effectiveness on the close co-operation of the planning, execution and knowledge base components of the systeti, and especially iii’&e use of knowledge learned from ...

this paper presents future trends of urban wastes and their impacts on the environment of african cities using plausible mitigation scenarios. to accomplish this, an integrated dynamic model for urban waste flows was developed, tested, calibrated and validated. its parameter sensitivity was analyzed. using population projection up to 2052 with different levels of technological implementation, p...