Pull-based development has enabled numerous volunteers to contribute open-source projects with fewer barriers. Nevertheless, a considerable amount of pull requests (PRs) valid contributions are abandoned by their contributors, wasting the effort and time put in both contributors maintainers. To better understand underlying dynamics contributor-abandoned PRs, we conduct mixed-methods study using...

In order to maximize the reuse of used electronic component resources, while reducing environmental pollution, Cu metal was recycled from wasted CPU sockets by reformative slurry electrolysis method. However, influences on regulation recovery rate and purity waste slots, electrolysis, has not been systematically elucidated in previous studies. this work, effects H2SO4 concentration, density, NH...

Objects of various integer sizes, o,, o , are to be packed together into bins of size N as they arrive at a service facility. The number of objects of size o, which arrive by time t is A , where the components of A' = (A , * , A ')' are independent renewal processes, with A'/t A as t --oo. The empty space in those bins which are neither empty nor full at time t is called the wasted space and th...

Energy harvesting is the conversion of unused or wasted energy in ambient environment into useful electrical [...]