This work considers unmanned aerial vehicle (UAV) networks for collecting data covertly from ground users. The full-duplex (FD) UAV intends to gather critical information a scheduled user (SU) through wireless communication and generate artificial noise (AN) with random transmit power in order ensure negligible probability of the SU’s transmission being detected by unscheduled users (USUs). To ...

As the complexity of embedded software systems grows, performance profiling becomes more and more important. Performance profiling of embedded software systems requires data collection with low overhead and high information completeness. Performance profiling consists of monitoring a software system during execution and then analyzing the obtained data. There are two ways to collect profiling d...

It is argued that the data collection process is the most crucial and time consuming stage in the model building process. This is primarily due to the influence that data has in providing accurate simulation results. Data collection is an extremely time consuming process predominantly because the task is manually orientated. Hence, automating this process of data collection would be extremely a...

We consider a collection system where collectors move around gathering information generated by data producers. In such a system, data may remain uncollected when the number of collectors is insufficient to cover the whole population of producers. Motivated by the observation that node encounters are sufficient to build a connected relationship graph, we propose to take advantage of the inheren...

Many sensor applications often require to collect raw sensed values from many sensor nodes to one centralized server. Sensor data collection typically comes with various quality requirements, e.g., the level of precision requested for temperature values, the time constraints for getting the data, or the percentage of data that is needed. This paper presents a quality-aware sensing framework whe...

MicroED, a method at the intersection of X-ray crystallography and electron cryo-microscopy, has rapidly progressed by exploiting advances in both fields and has already been successfully employed to determine the atomic structures of several proteins from sub-micron-sized, three-dimensional crystals. A major limiting factor in X-ray crystallography is the requirement for large and well ordered...

Advances in handheld computer technology are making data collection faster, easier, and more accurate. In this article, the use of personal digital assistants (PDAs) to collect data for a study on elder neglect is described and evaluated. Methods for integrating this technology into a research study are discussed as are suggestions for increasing the performance of data collectors using these d...

In considering data collection using computers, it is convenient to distinguish between three cases which differ in their repetition rate. In the first, the data must be sampled more frequently than oncelps. Here, one usually must record the data in analog form, and then convert it to digital values at a slower rate. In the second, the data are collected at a rate between l/ps and several/s. He...