This paper reports the fabrication and characterization of fully-integrated, fully-batch-microfabricated electromagnetic vibrational energy harvesters. The 4 – 15 mm structures utilize embedded NdFeB powder micromagnet technology, and represent some of the smallest magnetic energy harvesters demonstrated to date. Of three different designs, the best performing demonstrated 13.2 μVrms at the dev...

Recent portable electronic devices have strict requirements regarding size, weight, and power. The power needed directly impacts the size of the required batteries, and larger batteries compromise the sizes and weights of portable devices. In order to design successful portable devices that maximize power and minimize size, devices should be operated in lowpower-consuming or self-powered mode. ...

The paper introduces the notion of “entropy harvesting” in physical and biological systems. Various physical and natural systems demonstrate the ability to decrease entropy under external stimuli. These systems, including stretched synthetic polymers, muscles, osmotic membranes and suspensions containing small hydrophobic particles, are called “entropic harvesters”. Entropic force acting in the...

Total Allowable Catch (TAC)-regulating schemes have been introduced in most fisheries. TAC distribution following the Proportional Rule, based on historical catches, implies that harvesters or vessel groups that have captured more in the past and contributed to overfishing are getting larger quotas than groups that have contributed less to overfishing. In contrast to this rule, a more egalitari...

A pneumatic oscillating Chinese wolfberry harvester was designed to improve the efficiency of manual harvesting and minimize fruit damage by mechanical harvesting. The shedding model under forces established based on kinetic analysis, flow field characteristics were investigated using computational fluid dynamics (CFD). position shape fan outlet determined comparing effects a linear reduction L...

To govern the commons, states often focus on structures or instruments, such as delegated co-management or tradable quotas. This research argues that this emphasis often presents a trade-off with making investments into socially just action arenas. I revisit the case of the Port Lameron groundfish and lobster fishery in Southwest Nova Scotia, Canada, originally explored by Elinor Ostrom in Gove...

Understanding the factors that underlie the production of non-timber forest products (NTFPs), as well as regularly monitoring production levels, are key to allow sustainability assessments of NTFP extractive economies. Brazil nut (Bertholletia excelsa, Lecythidaceae) seed harvesting from natural forests is one of the cornerstone NTFP economies in Amazonia. In the Peruvian Amazon it is organized...