This work concerns the dynamics of towed array lifting devices (LFDs), which help to maintain the position of a tow line being dragged behind a vessel. The LFD satisfies the non-dimensional quadratically damped Mathieu equation ẍ+ (δ + 2 cos t)x+ ẋ |ẋ| = 0. Numerical study of this equation shows a wide array of dynamical features. The dynamical features of the system are exploited to obtain a c...

The DNA of Cryptosporidium Oocysts was extracted from fecal samples by using Commercial Wizard Genomic DNA purification general kit, tow freezingthawing protocols have been compared in this study: deep freezer for three cycles and liquid nitrogen for fifteen cycles, the results indicate that the second protocol was more influential in obtaining a sufficient amount of DNA from Oocysts of Cryptos...

Abstract The increasing daily use of virtual currency (cryptocurrency) is being adopted worldwide for many legal and illegal transactions. Cryptocurrency technology operates on a network that allows people to make payments around the world without any middleman. Since was first developed, it became popular, price cryptocurrencies started rise unstable. In terms returns gained from investing in ...

Two integer-programming models are presented which optimize barge groupings into cost efficient configurations for transit. First a grouping IP is used to cluster barges with similar characteristics such as origin port, destination port, and pickup time so as to minimize dwell and handling cost. Next an assignment IP is used to assign groups to tow boats to minimize travel costs.

We explain the relevance of Nash, Hoare and others in explaining Gricean implicature and cheap talk. We also develop a general model to address cases where communication is not cooperative, i..e cases of deception as well as cases where there is common knowledge of different interests in speaker and hearer. Tow models, one qualitative and one quantitative are introduced.

We propose a new type of social interaction as knowledge transactions. Tow agents consider to trade a set of Heterogeneous knowledge on which they have different value judgments. We aggregate by their different value judgments with threshold. The knowledge transactions are formulated as symmetric coordination games. We investigate what types of knowledge will be successfully traded through the ...

Marine mammals are regularly reported as bycatch in commercial and artisanal fisheries, but data are often insufficient to allow assessment of these incidental mortalities. Observer coverage of the mackerel trawl fishery in New Zealand waters between 1995 and 2011 allowed evaluation of common dolphin Delphinus delphis bycatch on the North Island west coast, where this species is the most freque...