This article constructs new life tables for the white population of the United States in each decade between 1790 and 1900. Drawing from several recent studies, it suggests best estimates of life expectancy at age 20 for each decade. These estimates are fitted to new standards derived from the 1900-02 rural and 1900-02 overall DRA life tables using a two-parameter logit model with fixed slope. ...

Working memory load is critically important for the overall level of performance on vigilance tasks. However, its role in a key aspect of vigilance-sensitivity decrement over time-is unclear. We used a dual-task procedure in which either a spatial or a nonspatial working memory task was performed simultaneously with a spatial vigilance task for 20 min. Sensitivity in the vigilance task declined...

The paper presents ways to reduce the vibrations of special cantilever boring bars mounted on spindle heads finishing and machines. Special are designed for machining holes in non-standard conditions, example, when deep with l/d>3 (l–hole length, d-hole diameter) or a discontinuous surface. results experiments theoretical developments, as well schemes experimental stands, presented. investig...

Abstract We present multiple factor analysis for contingency tables (MFACT) and its implementation in the FactoMineR package. This method, through an option of the MFA function, allows us to deal with multiple contingency or frequency tables, in addition to the categorical and quantitative multiple tables already considered in previous versions of the package. Thanks to this revised function, e...

Image hashing based Approximate Nearest Neighbor (ANN) searching has drawn much attention in large-scale image dataset application, where balance the precision and high recall rate is difficulty task. In this paper, we propose a weakly principal component hash method with multiple tables to encode binary codes. Analyzing the distribution of projected data on different principal component direct...

The official 1990-92 detailed life tables show a continuation of the trend toward longer life expectancy for Canadians (see Life tables). Life expectancy at birth has reached an all-time high: 80.89 years for females and 74.55 years for males. Recent improvements in life expectancy are attributable to many factors, including declines in infant mortality, cerebrovascular and cardiovascular disea...