Steel-reinforced concrete (SRC) columns, which are classified as composite columns, became the most widely used in recent years; because of their extensive advantages over the reinforced concrete and the steel columns. In this paper, the ductility index and its influential factors were explored to investigate the behavior of SRC columns. A straightforward approach was then proposed by establish...

In Portland Cement Concrete (PCC) pavement of the roads, dowels bar transfers vehicle loading to the unloaded slab. Load Transfer Efficiency (LTE) is used to evaluate dowel bars in PCC pavement. This parameter is defined as the vertical displacement ratio of the loaded slab versus the unloaded slab. In this study, the impact of effective factors (friction coefficient between dowel and concrete ...

n Contemporary studies indicate that teen pregnancy interferes with young women’s ability to graduate from high school and to enroll in and graduate from college. Conversely, planning, delaying and spacing births appears to help women achieve their education and career goals. Delaying a birth can also reduce the gap in pay that typically exists between working mothers and their childless peers ...

Adults are expert at recognizing faces, in part because of exquisite sensitivity to the spacing of facial features. Children are poorer than adults at recognizing facial identity and less sensitive to spacing differences. Here we examined the specificity of the immaturity by comparing the ability of 8-year-olds, 14-year-olds, and adults to discriminate houses differing in the spacing between fe...

Thirty-five individuals who had learned and relearaed 50 English-Spanish word pairs were tested for recall and recognition after an interval of 8 years. Two variables, the spacing between successive releaming sessions and the number of presentations required to encode individual word pairs, are excellent predictors of the likelihood of achieving permastore retention. Optimum recall occurs for w...

Understanding the molecular mechanisms that influence transposable element target site preferences is a fundamental challenge in functional and evolutionary genomics. Large-scale transposon insertion projects provide excellent material to study target site preferences in the absence of confounding effects of post-insertion evolutionary change. Growing evidence from a wide variety of prokaryotes...

Abstract Carbon fiber reinforced polymer (CFRP) with high specific strength, modulus, and other outstanding properties, which could be used in aerospace, shipbuilding, railway. The joint of carbon composite material plate metal plays an important role the overall performance structure. In this paper, a progressive damage model is developed based on laminate theory 3D Hashian theory. double bolt...

For culverts installed in soft soil, the rigid composite pile foundation is used for soil treatment, and stresses around are complicated. Centrifuge experiments numerical simulations conducted to investigate vertical earth pressures settlement over a slab culvert under high backfill foundations treated with piles. The influences of lateral length spacing on at top analysed, they have significan...