EIGHTY-SIX CITIES STUDIED BY OBJECTIVE STANDARDS

Spatial distribution and interannual variation of surface PM10 concentrations over eighty-six Chinese cities

The spatial distribution of the aerosols over 86 Chinese cities was reconstructed from air pollution index (API) records for summer 2000 to winter 2006. PM10 (particulate matter≤10 μm) mass concentrations were calculated for days when PM10 was the principal pollutant, these accounted for 91.6% of the total 150 428 recorded days. The 83 cities in mid-eastern China (100 E to 130 E) were separated...

A Tale of Six Cities

ONE OF THE interesting aspects of teaching statistics to students from different disciplines is to observe their differing attitudes to the subject. We are probably all familiar with the mathematician who will calculate a veritable feast of summary statistics with immense (and often inappropriate) accuracy but cannot express in words what any of them actually means. I find the opposite problem ...

[Drug use by pregnant women in six Brazilian cities].

OBJECTIVE To describe drugs used during pregnancy by women attending prenatal clinics of the national public health system (SUS) in Brazilian cities. METHODS Using a structured questionnaire, 5,564 pregnant women between the week 21 to 28 who attended prenatal visits of the SUS in six Brazilian cities were interviewed. The interview questions were grouped in "guided use" to cover pain, cramps...

Studies of Acid Aerosols in Six Cities

Objective Measurements of Artifacts, Produced by Modern Video Coding Standards

Algorithms for video content compression have been developed very fast during last years. But most of them are still lossy. This fact leads to different artifacts appearing in compressed video due to information losses. Objective metric for blocking artifacts detection and a number of methods for blurring estimation are proposed in this article. They can work without reference (original) video ...