Current theories of cognitive developmental debate the extent to which children’s cognition depends on a priori conceptual knowledge. The current set of experiments explores this debate in the domain of causal reasoning: To what degree do preschoolers rely on knowledge about causal relations vs. attention to temporal structure? In three experiments, causal structure and temporal order were eith...

Since the introduction of the trifin nail in the treatment of femoral neck fractures in 1931 (Smith-Petersen, Cave and Vangorder 1931) there has been controversy about the time at which unguarded weight-bearing may be safely started after operation. The patients described by Smith-Petersen and his colleagues were allowed to walk in a plaster hip spica three weeks after operation, although free ...

background: over the years, various types of orthoses have been designed to assist subjects with spinal cord injury (sci) to stand and walk. however, the functional performance of the orthoses has not been adequate, that is, patients experience stability problems, consume excessive energy during ambulation, and generally require assistance in donning and doffing the devices. this research is ai...

abstract background: hypertension in pregnancy is one of the prevalent disorders resulting in maternal death. the aim of this study was to investigate the effect of stretching exercise and walking on changes of blood pressure in nulliparous women during pregnancy. materials and methods: this was a quasi-experimental trial that consisted three groups of women who took part in pre- and post-tests...

The relay station simply rebroadcasts the signal it receives from the source, at exactly the instant that it receives it. The relay station therefore has no effect on the signal received by the observer, but it serves as a crutch for our thinking— it allows us to divide the problem into two parts, each already solved. Let ∆t denote the time interval between wave crests, with subscripts to indic...

In the last three quarters of the fifteenth century Spain, like the rest of Europe, was under the spell of Flemish art. The realism of the north had a strong appeal to Spanish taste, and the technical discoveries of Flemish painting and the new iconographies from Flanders and Germany were enthusiastically received. In the second half of the century in particular, tapestries, paintings, and scul...

Purpose: Considering the influence of horizontal velocity on many biomechanical characteristics of walking, the purpose of this study was to investigate how inter-lower-limbs local and global asymmetry is influenced by changes in walking speed from slow to fast. Methods: Ground reaction force data and trajectory of attached markers of bilateral lower limbs of 15 right leg-dominant able-bodied ...

the object of this study was evaluation of a walking tractor drawn peanut harvester at different conditions of soil moisture content and forward speed and comparing it with manual harvesting. the evaluation factors for peanut harvester were two levels of soil moisture content and three levels of forward speed. the results revealed that the effect of soil moisture content was only significant on...

the aim of study was to investigate and compare the concentric torque of quadriceps and hamstring muscles and timed-walking test in two groups. thus, one group of healthy subjects and one group of patients with low grade of tibiofemoral osteoarthritis (oa) were selected. concentric torque of quadriceps and hamstring were measured in both groups. besides, pain measurement, timed-walking test, ra...

background: osteoporosis is the most common metabolic bone disease in postmenopausal women. it seems necessary to determine the factors affecting the adoption of preventive behaviors of osteoporosis in postmenopausal women using the patterns that identify the factors influencing behavior. objectives: to investigate preventive behaviors of osteoporosis in postmenopausal women in fasa, fars provi...