This paper considers H2 controllers implemented using an explicit observer for systems subjected to input magnitude saturation. It is stressed that the approach of only focusing on controller windup, by using fundamental observer anti-windup technique where the observer is fed by the saturated control signal, could imply severely deteriorated closed-loop characteristics and even sustained oscil...

Previous models for ocular accommodation have suggested a dual sympathetic/parasympathetic innervation to the ciliary muscle. Such models would predict that sympathomimetic drugs should change the resting point or dark focus of accommodation. The effect of an alpha-adrenergic agonist (10% phenylephrine hydrochloride) on accommodation was examined; the results show a decrease in the near point o...

We proposed an improved evaluation method of depth accuracy in the virtual world, and discuss a result of this evaluation. In this evaluation, we focused the disorder of the convergence and the accommodation, and used a subjective assessment method applying moving stimulus images and quantitatively observed effects involving the disorder of the convergence and the accommodation. This method was...

Aftereffects of accommodation and convergence demonstrate the adaptability of these two visual motor systems. These aftereffects were reduced after ramp tracking exercises of either accommodation or vergence, and this reduced aftereffect or fatigue was associated with an increase of accommodative vergence and vergence accommodation. When one motor system (accommodation or vergence) adapted more...

OBJECTIVE To describe a benign condition of transient, isolated accommodation paralysis in young patients as a specific entity. DESIGN Case series of children and young adults with transient loss of accommodation who were referred to the neuro-ophthalmology clinic at the Meir Medical Center from 1997 to 2006. Five young patients who complained of an inability to read had full neuro-ophthalmol...

in spain, camping accommodation accounted for 6.32% of total tourism accommodation and 8.2% of overnight stays in 2007. there were 1,152 registered campsites which provided lodging for almost 6.4 million users. although these figures are higher than those of rural accommodation, few studies have analyzed the main attributes of this sector and their contribution to the development of spanish tou...

In plan-based interactive narrative systems, user actions must be integrated with an ideal story structure in order to strike a reasonable balance between user agency and story quality. A process called mediation addresses this issue by selecting appropriate responses to possible detrimental user actions in a given interactive narrative plan. One way the algorithm mediates exceptional user acti...

PURPOSE Results in previous studies indicated that the lateral suprasylvian (LS) area, the cortical area surrounding the middle suprasylvian sulcus (Mss) of the cat, has important roles in the control of accommodation. The current study was conducted to investigate descending projections from the accommodation-related area in the LS area to the brainstem. METHODS Wheat germ agglutinin-horsera...

purpose: to determine the amplitude and facility of accommodation after photorefractive keratectomy (prk) in myopic subjects. methods: the study was performed on 160 eyes of 80 patients aged 19 to 72 years. amplitude and facility of accommodation was evaluated before and 2 weeks and one and three months after prk. amplitude of accommodation was evaluated by “minus lens” method and facility of a...