RBIR Based on Signature Graph

This paper approaches the image retrieval system on the base of visual features local region RBIR (region-based image retrieval). First of all, the paper presents a method for extracting the interest points based on Harris-Laplace to create the feature region of the image. Next, in order to reduce the storage space and speed up query image, the paper builds the binary signature structure to describe the visual content of image. Based on the image's binary signature, the paper builds the SG (signature graph) to classify and store image's binary signatures. Since then, the paper builds the image retrieval algorithm on SG through the similar measure EMD (earth mover's distance) between the image's binary signatures. Last but not least, the paper gives an image retrieval model RBIR, experiments and assesses the image retrieval method on Corel image database over 10,000 images.Comment: 4 pages, 4 figure

On the Brunk-Chung type strong law of large numbers for sequences of blockwise mm-dependent random variables

For a sequence of blockwise m-dependent random variables {Xn, n ≥ 1}, conditions are provided under which limn→∞( ∑n i=1Xi)/bn = 0 almost surely where {bn, n ≥ 1} is a sequence of positive constants. The results are new even when bn ≡ nr, r> 0. As special case, the Brunk-Chung strong law of large numbers is obtained for sequences of independent random variables. The current work also extends results of Móricz [Proc. Amer. Math. Soc. 101 (1987) 709–715], an

Occupational stress among academic women in Viet Nam

The present research aims to bring deeper understanding and insight into the perceptions and experiences of women in relation to occupational stress, and associated coping mechanisms, in the unique cultural context of Vietnam. The study also examines differences in perceptions of occupational stress and the coping mechanisms across subgroups of women (age, education background, occupational roles & levels, marital status and experience) and makes a comparison with perspectives in other cultures.A qualitative, grounded theory approach was used to study occupational stress by collecting data from in-depth interviews with 42 academic women employed at Vietnamese higher education institutions to understand the meaning that these women attach to occupational stress; the nature and source of the occupational stress they experience; the impact of occupational stress on their lives; and the coping mechanisms they deploy in response to occupational stress.Cultural factors play an important role in occupational stress. Cultural factors influence experiences of occupational stress and the ways occupational stress is responded to. The Vietnamese context differs from other cultural contexts in the range of factors perceived as stressors for Vietnamese women.The study findings can be used to give voice to Vietnamese women experiencing occupational stress; to inform university policy makers with regard to occupational stress experienced by women in Vietnamese higher education; and to benefit scholars studying occupational stress in different cultural contexts via a conceptual consideration of the cultural aspects of occupational stress.The work adds to the few extant studies on occupational stress which have used grounded theory. By so doing, gaps in the existing grounded theory research on occupational stress are identified and proposals for future occupational stress research are put forward. This research is the first grounded theory study of occupational stress among women academics in Vietnam that determines that cultural factors play an important role in how women understand and respond to occupational stress and supports the growing evidence that occupational stress is common, global and varies between cultures