Static and dynamic characteristics of proportional directional valve

static versus dynamic assessment of l2 learners’ reading ability

dynamic assessment according to vygotskys sociocultural theory, states that instruction and assessment are interrelated. using static forms of assessment with second and foreign language students could do more harm than good. many teachers neglect to take account of the complexity involved in learning a second or foreign language and often wonder why learning of a language take so long. thi...

Static and Dynamic Characteristics of Instrumentation

Static and dynamic tactile directional cues experiments with VTPlayer mouse

Braille cells have good potential to provide information. Users don’t have to know the braille alphabet to be able to use them. In this study we show that it is possible to create 4×4 patterns to give the users some directional information. Two kinds of icons have been designed: static patterns and dynamic ones (animations). It appears that users rather like, and recognize better static icons.

Exponential Tracking Control of a Hydraulic Proportional Directional Valve and Cylinder via Integrator Backstepping∗

Hydraulic systems are widely used in manufacturing processes and transportation systems where energy intensive operations are performed and “machine” control is vital. A variety of ßow control products exist including manual directional control valves, proportional directional control valves, and servo-valves. The selection of a control valve actuation strategy is dependent on the system respon...

Relationship between Static and Dynamic Balance Characteristics with Types of MS in Women

MS is a lifelong disease that could involve the person in different forms. Knowing balance characteristics of different types of this chronic disease helps the specialists for controlling their complications. The purpose of this study was to recognize static and dynamic balance of different type of MS and to compare MS patients with healthy individual. 54 MS women in three groups (27- Relapsing...