Spatial crowdsourcing is an effective and novel method.In crowdsourcing systems, a centralized platform is traditionally used to allocate tasks and select workers.Centralized platforms always face following challenges: 1) How to ensure the rationality of tasks allocating; 2) How to ensure the payments of workers in the system when dishonest request

The capabilities opi the color that keeps on giving of the package exams for automatic generation of (statistical) exams in R are extended by adding support for learning management systems: As in earlier versions of the package exam generation is still based on separate Sweave ?les for each exercise but rather than just producing di?erent types of

The text analyses the constitutive process of the Pedagogical Political Project (PPP) of a City Department of Education located in the State of Rio Grande do Sul (Brazil), emphasizing the contributions of the collaborative action research while posture that feeds the political commitment, the critical thinking and cooperative relations for the esta

Orchids have evolved flowers with unique morphologies through coevolution with pollinators, such as insects.Among the floral organs, the lip (labellum), one of the three petals, exhibits a distinctive shape and plays a crucial role in attracting pollinators and facilitating pollination in many orchids.The lip of the terrestrial orchid Habenaria rad

Yigit Akin,1 Selcuk Yucel21Department of Urology, Harran opi the color that keeps on giving University School of Medicine, Sanliurfa, Turkey; 2Department of Urology, Acibadem University School of Medicine, Istanbul, TurkeyIntroduction: Extracorporeal shock wave lithotripsy (ESWL) is a well-known and successful treatment modality.In addition, it can