Sampling online workers globally
ثبت نشده
چکیده
1036 10 MARCH 2017 • VOL 355 ISSUE 6329 and Bachan developed a model of seawater chemistry and pH over time scales exceeding ~100 million years. Their highly robust probabilistic history of seawater pH and chemistry reflects evolving properties of Earth’s atmosphere, oceans, and crust. Seawater pH increased from early Archean values of ~6.5 to 7.0 to more recent values of ~7.5 to 9.0 mostly as a result of solar brightening and decreasing interaction between seawater and oceanic crust. —HJS
منابع مشابه
Analysis of Factors Affecting to the Hearing Condition of Blacksmith Workers in Sungai Pinang Village, District of Daha Selatan, South Kalimantan
Globally, the World Health Organization (WHO) estimates that the prevalence of hearing loss in 2000 were 250 million people, or about 4.2% of world population. Hearing loss can be caused by workers work-related or unrelated factor. Some countries in the world have established that NIHL was the greatest occupational diseases suffered. This research is quantitative with a causal relationship. Thi...
متن کاملAuction-SC – An Auction-Based Framework for Real-Time Task Assignment in Spatial Crowdsourcing
A new platform, termed spatial crowdsourcing (SC), is emerging that enables a requester to commission workers to physically travel to some specified locations to perform a set of spatial tasks (i.e., tasks related to a geographical location and time). For spatial crowdsourcing to scale to millions of workers and tasks, it should be able to efficiently assign tasks to workers, which in turn cons...
متن کاملManaging an Online Survey about Influenza Vaccination in Primary Healthcare Workers
Online surveys are increasingly used due to their speed and efficiency. The aim of this study was to analyze factors that may have contributed to the quality and speed of response of an online survey on influenza vaccination in primary healthcare workers. A multicenter study including family physicians, nurses and pediatricians from primary healthcare teams from seven Spanish Autonomous Communi...
متن کاملThe Tip of the Iceberg of Misleading Online Advertising; Comment on “Trouble Spots in Online Direct-to-Consumer Prescription Drug Promotion: A Content Analysis of FDA Warning Letters”
Kim’s overview of Food and Drug Administration (FDA) regulatory actions from 2005 to 2014 is a comprehensive analysis of the US regulatory experience with online direct-to-consumer advertising (DTCA) of prescription medicines. This experience is of relevance internationally as online DTCA reaches the English-speaking public globally, despite the illegality of DTCA in most countries. The most co...
متن کاملSocial Health Workers as Evaluators in Objectice Structured Clinical Examination: Evidences and Perspectives
Introduction: this study is aimed at investigating faculty’s and students’ perspective whether health social workers can be hired as substitute for evaluators or as a co-evaluator for clerkship students assesmet in community medicine course? Methods: this research is a cross-sectional study. The study has been conducted by participation of medical students assigned to pass comunity medicine co...
متن کامل