T Wo books currently oil the market. Jack Welch's Straight from the Gut* and Katharine Graham's A Personal HistoJ n offer much food for thought about leadership, as well as highlight the qualities M^\ frailties of successful leaders. The lives of Jack Welch and Katharine Graham reflect several of the core leadership competencies in the GHA Mission ("entered Leadership Model: personal integrity,...

Insecticide-resistant populations of TPB have been noted in the Delta region (Hollingsworth et al., 1 ; Snodgrass, 1 ). Proposed EPA regulatory constraints on organophosphate insecticide use are anticipated. Viable replacements for organophosphate insecticides are needed. These may include efficient, long-lasting, and specific biological control agents. In this study, a commercially available B...

Previous studies have indicated that the main fractions of humic substances (HS), gray humic acid (GHA), brown humic acid (BHA), and fulvic acid (FA), present different molecular patterns in water solution that are probably associated with specific structural features. However, the techniques used in these previous studies did not permit clarification of the principal qualitative characteristic...

This paper proposes Principal Component Analysis (PCA) to find adaptive bases for multiresolution. An input image is decomposed into components (compressed images) which are uncorrelated and have maximum l2 energy. With only minor modification, a single layer linear network using the Generalized Hebbian Algorithm (GHA) is used for multiresolution PCA. The decomposition has been successfully app...

Abstract. We present a continuous and well-resolved record of climatic variability for the past 100 000 years from marine sediment core taken in Delagoa Bight, off southeastern Africa. In addition to providing sea surface temperature reconstruction ca. years, this also allows high-resolution continental reconstruction. Climate sensitive organic proxies, like distribution isotopic composition pl...