Most known constructions of probabilistically checkable proofs (PCPs) either blow up the proof size by a large polynomial or have a high (though constant) query complexity. For instance, the proof size could be decreased to almost linear (i.e., n ), but at the expense of a large query complexity (e.g., in excess of 10) (see Polishchuk and Spielman). On the other hand, the PCP constructions of H...

Based on expert estimates, 17% of corrupt practices are committed in this area, and the authors identify leading causes corruption educational sphere. The objective is non-recognition teachers lecturers as subjects criminal offenses, low level labor expense, inventory, logistics management discrepancy institutions different groups with modern methods. Subjective reasons include mutual “benefit”...

Liu, Hong, and Zhao, Zhong—Does health insurance matter? Evidence from China’s urban resident basic medical insurance In 2007, China launched a subsidized voluntary public health insurance program, the Urban Resident BasicMedical Insurance (URBMI), for urban residents without formal employment. We estimate the impact of the URBMI on health care utilization and expenditure by a fixed effects app...

Overweight and obesity is an emerging public health problem among school-aged children in Bac Giang city in the Northen part of Vietnam recently. This study aims to identify overweightobesity prevalence of secondary school children in this city and it’s associated factors. The study was a nested case control in a cross-sectional study design in 1528 secondary students selected from 4 secondary ...

the increase of healthcare costs improved as a rule the health of the population. sometimes the positive effects of this expense are shaded off. on one hand, this expense improves the offer of the medical care. other influential factors on the health of population, we quote as example the training, the lifestyle, the hygiene and the distribution of income. on the other hand the increase of thes...