This paper describes the design, implementation and performance characteristics of several compacting collectors in the Java Memorymanagement Toolkit (JMTk). Compacting collectors are an important class of collectors used in several production runtimes, including Microsoft’s Common Language Runtime and IBM’s Java Runtime Environment. The development of a strategy using compaction makes an impor...

Regional garbage collection offers a useful compromise between real-time and generational collection. Regional collectors resemble generational collectors, but are scalable: our main theorem guarantees a positive lower bound, independent of mutator and live storage, for the theoretical worst-case minimum mutator utilization (MMU). The theorem also establishes upper bounds for worst-case space u...

One of the advantages that compacting collectors tout over non-moving collectors is that compacting collectors can allocate memory very quickly with a simple pointer increment. It is shown that non-moving collectors can also use simple pointer increments when allocating memory without too much overhead.

OBJECTIVE To assess the percentage of musculoskeletal complaints and their possible risk factors among municipal solid waste (MSW) collectors. DESIGN A descriptive cross-sectional study with a comparison group. SETTING Primary level of care, at the Western Municipality of Mansoura City, Egypt. PARTICIPANTS A total of 160 male MSW collectors fulfilled the eligibility criteria and 120 of th...

Two biodegradable quaternary ammonium salts were synthesized and used as cationic collectors in processing iron ores by froth flotation. The flotation behaviors of iron minerals with the new biodegradable quaternary ammonium collectors were investigated by micro-flotation tests of quartz (SiO2) and magnetite (Fe3O4). It was observed that the new biodegradable collectors were effective in separa...

Isolating electronically conducting material from internal short circuits is a promising way to prevent the onset of thermal runaway within lithium-ion cells. Here, metal-coated polymer current collector, which designed disconnect by withdrawing heating region, tested in 18650 In addition having lower mass and manufacturing costs, cells with collectors demonstrate reduced risk during nail penet...