10,710 research outputs found
Shifting waterscapes: explaining basin closure in the Lower Krishna Basin, South India
No full textRiver basins / Ecosystems / Protective irrigation / Irrigation programs / Water transfer / Water distribution / Water allocation / Groundwater depletion / Aquifers / Water scarcity / Water use / Drought / India / Lower Krishna Basin / Godavari Basin / Nagarjuna Sagar Project / Kolleru Lake
Exploiting tacit knowledge through knowledge management technologies
No full textThe purpose of this paper is to examine the contributions and suitability of the available knowledge management (KM) technologies, including the Web 2.0 for exploiting tacit knowledge. It proposes an integrated framework for extracting tacit knowledge in organisations, which includes Web 2.0 technologies, KM tools, organisational learning (OL) and Community of Practice (CoP). It reviews a comprehensive literature covering overview of KM theories, KM technologies and OL and identifies the current state of knowledge relating to tacit knowledge exploitation. The outcomes of the paper indicate that Internet and Web 2.0 technologies have stunning prospects for creating learning communities where tacit knowledge can be extracted from people. The author recommends that organisations should design procedures and embed them in their Web 2.0 collaborative platforms persuading employees to record their ideas and share them with other members. It is also recommended that no idea should be taken for granted in a learning community where tacit knowledge exploitation is pursued. It is envisaged that future research should adopt empirical approach involving Complex Adaptive Model for Tacit Knowledge Exploitation (CAMTaKE) and the Theory of Deferred Action in examining the effectiveness of KM technologies including Web 2.0 tools for tacit knowledge exploitation
Geochemical studies of the river-estuarine systems of Krishna and Godavari
No full textDuring summer season, the Krishna River waters are enriched in major cations Na, K, Mg, Ca and Si by a factor of 1.2-1.9, in U by a factor of 3 and in δ D by 14.2 % compared to those of Godavari. The high δ D of Krishna River waters (+ 1.6 %) over those of Godavari (- 12.6 %) indicate relatively more evaporation of the former by 15%. The Uranium concentrations of Krishna waters at Vijayawada is 2.6 °g/l which decreases to 1.6 °g/l at Puligadda which is approximately 100 km whereas the 234U/ 238U activity ratio at both place is identical 1065 ± 0.03 suggesting authigenic removal of U does not appear to behave conservatively in the Krishna estuary as has been its behaviour in other India and some world rivers; there is removal of U from the Krishna estuarine waters. The major cations and δ D behave conservatively in both Krishna and Godavari estuaries. Si behaves almost conservatively in the Krishna Estuary whereas in the Godavari estuary there is about 15% Si removal. The fluxes of all the measured constituents from Krishna and Godavari to the Bay of Bengal during the non-monsoon period are calculated. The clay, silt and sand fractions as well as the Al, Fe, Mn, Cr and Ni concentrations of the clay fractions were determined in Krishna estuarine sediments. The non-monsoonal fluxes from Krishna River to the Bay of Bengal are also estimated
Geochemical studies of the river-estuarine systems of Krishna and Godavari
No full textDuring summer season, the Krishna River waters are enriched in major cations Na, K, Mg, Ca and Si by a factor of 1.2-1.9, in U by a factor of 3 and in δ D by 14.2 % compared to those of Godavari. The high δ D of Krishna River waters (+ 1.6 %) over those of Godavari (- 12.6 %) indicate relatively more evaporation of the former by 15%. The Uranium concentrations of Krishna waters at Vijayawada is 2.6 °g/l which decreases to 1.6 °g/l at Puligadda which is approximately 100 km whereas the 234U/ 238U activity ratio at both place is identical 1065 ± 0.03 suggesting authigenic removal of U does not appear to behave conservatively in the Krishna estuary as has been its behaviour in other India and some world rivers; there is removal of U from the Krishna estuarine waters. The major cations and δ D behave conservatively in both Krishna and Godavari estuaries. Si behaves almost conservatively in the Krishna Estuary whereas in the Godavari estuary there is about 15% Si removal. The fluxes of all the measured constituents from Krishna and Godavari to the Bay of Bengal during the non-monsoon period are calculated. The clay, silt and sand fractions as well as the Al, Fe, Mn, Cr and Ni concentrations of the clay fractions were determined in Krishna estuarine sediments. The non-monsoonal fluxes from Krishna River to the Bay of Bengal are also estimated
Distance and mean citation for first-last author relationship in three resolutions (100 m, 1 km, and 1000 km).
No full text<p>Distance and mean citation for first-last author relationship in three resolutions (100 m, 1 km, and 1000 km).</p
Study on Coastal Area Pollution by Anthropogenic Activities Along The Krishna – Eastern Delta
No full textKrishna Delta is located towards 90 km southeast of Vijayawada and 50 km to the south of Machilipatnam. Krishna Eastern delta area receives large quantities of pollution due to Seawater intrusion which directly affects coastal groundwater. Another main cause of pollution is due to excessive use of pesticides, discharging of chemicals and other anthropogenic pollutants from nearby households, aqua cultures .The quality of water is getting deteriorated due to unscientific waste disposal and unethical manmade activities. The waste disposal around the water bodies may damage the groundwater aquifers and physio-chemical properties of water. By testing the Surface waters, underground waters and comparing their properties with Drinking standards of water , we can know the extent of pollution caused in the coastal areas and suggest possible remedial measures
Lithosphere Structure and upper mantle characteristics below the Bay of Bengal
No full textThe oceanic lithosphere in the Bay of Bengal (BOB) formed 80–120 Ma following the breakup of eastern Gondwanaland. Since its formation, it has been affected by the emplacement of two long N-S trending linear aseismic ridges (85oE and Ninetyeast) and by the loading of ca. 20-km of sediments of the Bengal Fan. Here, we present the results of a combined spatial and spectral domain analysis of residual geoid, bathymetry and gravity data constrained by seismic reflection and refraction data. Self-consistent geoid and gravity modeling defined by temperature-dependent mantle densities along a N-S transect in the BOB region revealed that the depth to the Lithosphere-Asthenosphere boundary (LAB) deepens steeply from 77 km in the south to 127 km in north, with the greater thickness being anomalously thick compared to the lithosphere of similar-age beneath the Pacific Ocean. The Geoid-Topography Ratio (GTR) analysis of the 85°E and Ninetyeast ridges indicate that they are compensated at shallow depths. Effective elastic thickness (Te) estimates obtained through admittance/ coherence analysis as well as the flexural modeling along these ridges led to the conclusions: i) 85°E Ridge was emplaced in off-ridge environment (Te = 10–15 km); ii) the higher Te values of ?25 km over the Afanasy Nikitin Seamount (ANS) reflect the secondary emplacement of the seamount peaks in off-ridge environment, iii) that the emplacement of the Ninetyeast Ridge north of 2°N occurred in an off-ridge environment as indicated by higher Te values (25-30 km). Furthermore, the admittance analysis of geoid and bathymetry revealed that the admittance signatures at wavelengths >800 km are compensated by processes related to upper mantle convection
Magnetic anomalies of offshore Krishna-Godavari basin, eastern continental margin of India
No full textThe marine magnetic data acquired from offshore Krishna-Godavari (K-G) basin, eastern continental margin of India (ECMI), brought out a prominent NE-SW trending feature, which could be explained by a buried structural high formed by volcanic activity. The magnetic anomaly feature is also associated with a distinct negative gravity anomaly similar to the one associated with 85°E Ridge. The gravity low could be attributed to a flexure at the Moho boundary, which could in turn be filled with the volcanic material. Inversion of the magnetic and gravity anomalies was also carried out to establish the similarity of anomalies of the two geological features (structural high on the margin and the 85°E Ridge) and their interpretations. In both cases, the magnetic anomalies were caused dominantly by the magnetization contrast between the volcanic material and the surrounding oceanic crust, whereas the low gravity anomalies are by the flexures of the order of 3-4 km at Moho boundary beneath them. The analysis suggests that both structural high present in offshore Krishna-Godavari basin and the 85°E Ridge have been emplaced on relatively older oceanic crust by a common volcanic process, but at discrete times, and that several of the gravity lows in the Bay of Bengal can be attributed to flexures on the Moho, each created due to the load of volcanic material
Early (pre-8 Ma) fault activity and temporal strain accumulation in the central Indian Ocean
No full textThe diffuse deformation zone in the central Indian Ocean is the classical example of distributed deformation of the oceanic lithosphere with shortening between the Indian and Capricorn plates manifest as reverse faulting (5–10 km spaced faults) and long-wavelength (100–300 km) folding. The onset of this deformation is commonly regarded as a key far-field indicator for the start of major uplift of the Himalayas and Tibet, some 4000 km further to the north, due to increased deviatoric stresses within the wider India-Asia area. There has been disagreement concerning the likely timing for the onset of deformation between plate motion inversions and seismic reflection-based studies. In the present study, fault displacement data from seismic reflection profiles within the central Indian Ocean demonstrate that compressional activity started much earlier, at around 15.4–13.9 Ma. We reconstruct that 12% of the total reverse fault population had been activated, and 14% of the total strain accumulated, prior to a sharp increase in the deformation rate at 8.0–7.5 Ma. There is no evidence for any regional unconformity before 8.0–7.5 Ma, early shortening was accommodated by activity on single isolated fault blocks. Total strain estimates derived are more variable and complex than those predicted from plate inversion and do not show simple west to east increase
EXPLORING CURRENT STATE AND DIFFUSION OF KNOWLEDGE MANAGEMENT (KM) RESEARCH
No full textThe aim of this research-in-progress paper is to provide a comprehensive and systematic review of the literature relating to knowledge management issues in order to establish the current “state of play” in the domain along a number of dimensions including unit of analysis, research paradigm employed, and the research topics/issues investigated. Information on a series of variables was extracted after conducting a review of 1043 articles on knowledge management, published in various peer reviewed journals between 1974 and 2008. Our findings suggest that the positivist paradigm, empirical and conceptual/descriptive research, and the multi-method approach were used predominantly when investigating the topics related to KM. KM systems followed by KM environment issues were the most widely published areas within KM domain. Further, we have identified literature gaps that require further exploration and conceptual refinement in the context of knowledge management research
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