In the subantarctic fur seal Arctocephalus tropicalis, mothers leave their pups during the rearing period to make long and frequent feeding trips to sea. When a female returns from the ocean, she has to find her pup among several hundred others. Taking into account both spectral and temporal domains, we investigated the individual vocal signature occurring in the 'female attraction call' used b...

This study explores how third-party assurance seals, a privacy service provided by vendors to mitigate customers’ fears, has an impact on on-line customer satisfaction and repeat-purchase intention. It asks the following research questions: Do assurance seals influence on-line service experience? If so, how do they affect consumers’ satisfaction and repeat-purchase intention? The study shows, f...

We propose a continuous-time version of the correlated random walk model for animal telemetry data. The continuous-time formulation allows data that have been nonuniformly collected over time to be modeled without subsampling, interpolation, or aggregation to obtain a set of locations uniformly spaced in time. The model is derived from a continuous-time Ornstein-Uhlenbeck velocity process that ...

Depleted hydrocarbon reservoirs are a promising target for CO2 sequestration. Injection of cold into such geological will cause thermal stresses and strains in wellbore casings, cement seals surrounding rock, which may lead to the creation unwanted pathways seepage. Joule-Thomson effects could potentially produce freezing conditions. The design injector wells must be able cope with these loads....

INTRODUCTION Four species of seals live in association with sea ice in Alaska; these are the ringed seal (Phoca hispida), spotted seal (P. largha), bearded seal (Erignathus barbatus), and ribbon seal (Histriophoca fasciata or Phoca fasciata). Ribbon seals, the focus of this paper, range from the Sea of Japan and the Sea of Okhotsk eastward into the Bering Sea and northward into the Chukchi Sea....

The concept of zero leak in tractors refers to the achievement a completely sealed hydraulic system, where there is no fluid leakage from any components. This can be accomplished by using high-quality seals, ensuring proper installation and maintenance, incorporating advanced technology. benefits include increased efficiency, reduced environmental impact, reduce customer complaints improved saf...

Abstract A 3D model of straight-through labyrinth liquid seal for water pump was built to analyse the fluid-induced forces. We found that eccentricity and pressure difference have great impact on both tangential force radial force. The increases along with rotating speed. When tooth hight is T h =2.4mm, comes minimum. width Tw =2.0mm, maximum. numbers a influence more number sealing teeth will ...

The use of abradable and rub tolerant polymer seals to reduce leakage between rotating and stationary members in centrifugal compressors and steam turbines has increased over the years. Abradable materials such as mica-filled tetrafluoroethylene (TFE), nickel graphite, and aluminum alloy containing silicon/polyester are the most commonly used and have gained acceptance in the marketplace. This ...