Characteristics of indoor and outdoor fine particles in heating period at urban, suburban, and rural sites in Harbin, China.

Concurrent indoor-outdoor fine particulate matter (PM) measurements were conducted at urban, suburban, and rural sites in Harbin, a megacity in the northeast of China. Chemical constituents of indoor-outdoor PM were determined. Infiltration factors (F) of all sites were calculated according to the indoor to outdoor (I/O) ratios of PM based on the regression analysis.

[Arterial hypertension in chronic hemodialysis patients at the National Hospital of Niamey Lamordé].

A prospective study was conducted at the department of the National Hospital in Niamey, Niger Lamordé over a period of 12 months (from January 1 to December 31, 2009) on 99 patients on chronic hemodialysis. The purpose of this study was to analyze the epidemiological, clinical, paraclinical and therapeutic aspects of arterial hypertension in this population. The average age was 37 years (range 17 to 65) , the prevalence of arterial hypertension was 61.

SAKM: self-adaptive kernel machine. A kernel-based algorithm for online clustering.

This paper presents a new online clustering algorithm called SAKM (Self-Adaptive Kernel Machine) which is developed to learn continuously evolving clusters from non-stationary data. Based on SVM and kernel methods, the SAKM algorithm uses a fast adaptive learning procedure to take into account variations over time. Dedicated to online clustering in a multi-class environment, the algorithm designs an unsupervised neural architecture with self-adaptive abilities.