A stage suspended boom system is an automatic steeve system orchestrated by the PLC (programmable logic controller). Security and fault-recovering are two important properties. In this paper, we analyze and verify the boom system formally. We adopt the hybrid automaton to model the boom system. The forward reachability is used to verify the properties with the reachable states. We also present ...

Abstract The paper demonstrates that a large economic sock such as an oil boom increases intergenerational earnings mobility among directly affected men, mostly through increased bottom-up mobility, but not for women. Preexisting local differences in or shifts the distributions do drive these findings. Instead, changes relative paid to workers with different skills offer best explanation. Moreo...

A recent report by the Earth Policy Institute estimated that one quarter of the US corn crop is being channelled into biofuel production, raising fears of increased food prices and worldwide hunger. An excerpt from the report reads, “The amount of grain needed to fill the tank of an SUV with ethanol just once can feed one person for an entire year. The average income of the owners of the world’...

Summan Inherent resistance of colon cancer cells to cis-diamminedichloroplatinum(II) (CDDP) is partly attributed to reduced drug penetration through plasma membrane. Amphotericin B (AmB). a polyene antifungal antibiotic, has been shown to increase CDDP penetration and cytotoxicity on several non-digestive cancer cell lines. We demonstrated here that AmB dramatically increases the penetration of...

The use of precision agriculture technologies such as automatic boom section control allows producers to reduce off-target application when applying herbicides. While automatic boom section control provides benefits, pressure differences across the spray boom resulting from boom section actuation may lead to off-rate application errors. Off-rate errors may also result from spray rate controller...

Issue The ter m ”Dutch Disease” originally referred to the adverse effects of the large North Sea natural gas discoveries on the Dutch manufacturing sector and economic growth. Dutch Disease is now an economic term that refers to the general ef fects of a commodity export boom on an economy. The booming sector drives up the cost of labour and other non-tradable inputs, which makes other tradabl...

In Luanda maybe more than elsewhere, controlling the city landscape is synonymous with polity at large. Despite a tremendous political change in Angola during twentieth century, paper traces how modernist plans elaborated late colonial period (1945–1975) have influenced planning imagination of until today. It argues that construction boom reshaped end war 2002 can be interpreted as promise to b...

— The oil palm boom has prompted governments and plantation companies to find ways to incorporate customary landholders in large-scale plantation developments. This paper examines the joint-venture model that has been widely promoted in Sarawak, Malaysia. Principal–agent theory is used to analyze the structural relations between the actors in joint-venture projects—the landholders, the governme...