What are the mechanisms that prevent partners from cheating in potentially cooperative interactions between unrelated individuals? The cleaner fish Labroides dimidiatus and client reef fish both benefit from an interaction as long as the cleaner eats ectoparasites. However, the cleaner fish prefers some client mucus, which constitutes cheating. Field observations suggested that clients control ...

Signals transmit information to receivers about sender attributes, increase the fitness of both parties, and are selected for in cooperative interactions between species to reduce conflict [1, 2]. Marine cleaning interactions are known for stereotyped behaviors [3-6] that likely serve as signals. For example, "dancing" and "tactile dancing" in cleaner fish may serve to advertise cleaning servic...

In this paper we report our study on the user experience of robot vacuum cleaner behavior. How do people want to experience this new type of cleaning appliance? Interviews were conducted to elicit a desired robot vacuum cleaner personality. With this knowledge in mind, behavior was designed for a future robot vacuum cleaner. A video prototype was used to evaluate how people experienced the beha...

We study the operation of the segment cleaner in a log structured le system. When the segment cleaner is active, response time for user read requests is adversely aaected. Thus, it is desirable to run the segment cleaner when the read traac is low. We propose a simple strategy for scheduling the segment cleaner that seems to perform an order of magnitude better than a random baseline policy. We...

This paper details the design and implementation of a le system cleaner for a log-structured le system for Linux. This user-level cleaner reclaims disk space which is occupied by blocks no longer referenced by any le in the le system. The current functionality of our cleaner is very limited, but some initial data suggests that performance scales linearly with the amount of data to be cleaned.

OBJECTIVE To test an air cleaner and health coach intervention to reduce secondhand smoke exposure compared with air cleaners alone or no air cleaners in reducing particulate matter (PM), air nicotine, and urine cotinine concentrations and increasing symptom-free days in children with asthma residing with a smoker. DESIGN Randomized controlled trial, with randomization embedded in study datab...

Dental healthcare workers (DHCWs) are at high risk of occupational exposure to droplets and aerosol particles emitted from patients' mouths during treatment. We evaluated the effectiveness of an air cleaner in reducing droplet and aerosol contamination by positioning the device in four different locations in an actual dental clinic. We applied computational fluid dynamics (CFD) methods to solve...

With the development of technology, behavior electrical devices has also changed. This makes it clear that load model and correct identification are necessary. study presents residential loads such as incandescent lamp, Light Emitting Diode (LED) Liquid Crystal Monitor (LCD) vacuum cleaner, experimentally determining coefficients polynomial exponential model. Since measurement parameters easy t...

This study examined the potential for coal mine roof bolter dust to be a source of a worker’s exposure to respirable quartz. For the models of roof bolter studied, the dust from bolt hole drilling is collected by a dry vacuum exhaust system. The collected dust-laden air passes through a cyclone size-separator (pre-cleaner) and into a collector box containing two additional cyclones and a filter...