the pull- out strength of the reinforcement has a significant role on the function of the most reinforced soil structures. since the coarse grain soils have a better interaction with the reinforcement, they are mostly used in these structures. in most situations, we have to transfer these granular soils from the borrow area, usually far from the site of the project. this will impose a considera...

Partial cross ownership (PCO) in a dyad supply chain refers to a situation where each firm holds a portion of its partner’s shares. We study this topic in push and pull supply chains, and prove that neither the supply chain’s nor any member’s profit changes with the percentage of the leader’s shares the follower holds. However, while the profits of the chain and the leader increase with the per...

Despite the consumers' increasing demand of technology-based innovations for making stores more appealing and the huge availability of advanced technologies, there is still a lack of research on the retailers' and employees' points of views towards the introduction of these systems. In fact, an efficient innovation should take care of both the final users/consumers' and the retailers/employees'...

Vol. 34 No. 5 • May 2009 • P&T® 243 (see the April issue of P&T, page 175). Ms. Levine sued and received a settlement from the clinic where the drug was administered. She also named Wyeth as a defendant, claiming that the drug’s label should have more clearly instructed clinicians against using an IV push injection. The label, which the FDA had approved, warned about inadvertent intra-arterial ...

We study the performance of a flexible manufacturing line producing multiple products under different material control strategies. Specifically, we compare the throughput versus average inventory characteristics when the line operates under pure pull and pure push strategies. Using simulation we show that the pure push strategy has a higher throughput for a given level of inventory than the pur...

Retrogressive landslide is caused by the lower rock mass sliding, so that upper part loses support, deformed, and starts to slide. In process of highway construction, incised slope often leads retrogressive landslide, determination damage range great significance for control slope. Taking a in Hunan Province as research object, particle flow discrete element used numerically simulate entire fai...

This paper aimed to discover the dynamics attracting foreign students to pursue higher education in Taiwan. Internationalization in higher education has long been a topic of interest for many researchers. A significant body of literature has focused on the dynamics behind student mobility. In general, these studies used pull-push terminology to explain student mobility, as well as suggesting th...

We prove that a pushing-block puzzle called PUSHPUSH-k is PSPACE-complete for any fixed k ≥ 1. In this puzzle, a robot moves on a finite grid. Each grid position is either empty or occupied by a single obstacle block. While moving, the robot may push obstacle blocks in direction of its movement, subject to certain constraints. In particular, once an obstacle block starts moving, it continues to...