Although animal-borne accelerometers are effective tools for quantifying the kinematics of animal behaviors, quantifying the burst movements of small and agile aquatic animals remains challenging. To capture the details of burst movements, accelerometers need to sample at a very high frequency, which will inevitably shorten the recording duration or increase the device size. To overcome this pr...

Abstract: The paper discusses an automated procedure for measuring turbidity and sampling suspended sediment. The basic equipment consists of a programmable data logger, an in situ turbidimeter, a pumping sampler, and a stage-measuring device. The data logger program employs turbidity to govern sample collection during each transport event. Mounting configurations and housings for the turbidime...

Wireless sensor networks (WSN) are often used to monitor environmental data because of their low cost. However, writing applications for such a technology requires not trivial programming skills. Moreover it is not easy to find available general purpose tools that can be used to perform a monitoring task with a WSN because usually such tools are focused on a specific application scenario. In th...

A data logger is an electronic instrument that records environmental parameters such as temperature, relative humidity, wind speed and direction, light intensity, water level and water quality over time. Typically, data loggers are compact, battery-powered devices that are equipped with microprocessor input channels and data storage. Most data loggers utilize turnkey software on a personal comp...

This paper presents an extended case study in the use of the Care language for formally veriied software development. The case study concerns storage of variable-length records into a xed-size memory space. The problem is speciied, and a design given, using the Care language. The solution assumes the existence of certain low-level library modules whose speciications (only) are given here. The d...

Researchers often want to gather activity-related data available on mobile phones. Based on our experience with data collection in numerous field studies, we identified a number of requirements for a smartphone data logger, and set out to create logging software fulfilling those requirements. Our software—named ContextLogger2— now comes close to meeting the goals set for it. Furthermore, it has...

Evaluation of human-computer spoken dialogues is often based on analyses of objective metrics such as task completion rate, turn-taking, time consumption, etc. While these data are easily obtained and processed from log files, they offer or very little information about the actual usability of the given service as perceived by the test subjects. This study combines the evaluation based on objec...