16,927 research outputs found
Bibliographics for the 983 eprints in the live archives of E-LIS : trends and status report up to 7th July 2004, based on author-self-archiving metadata
No full textThe priority for ideas and philosophy related to "Network Theory" have been traced back and documented by Braun(2004),and credit goes to Karinthy(1929).The IT has empowered to realise it, as the most practical phenomena and it is no more a humour. The OAI (Open Archives Initiatives)and ACIS (Academic Contributor Information System)are progressive in the direction ,which may lead to realise the "Collective Genius" at global level. Focus of present study is on Author-Self-Archiving (A-S-A)Metadata of the 983 Eprints in the Live Archives of the E-LIS (EPrints of Library and Information Science),which were approved till 7th July 2004.The A-S-A Metadata was used for librametric analysis. Self-explanatory bibliographics are illustrated.The highlights include: Conference papers (34%); highest approval, June 2004 (28%); published archives (76%);not refereed (52%); not in public domain (60%); highest self-archiving-author (De Robbio, Antonella).The Nos. of EPrints having single JITA domain specifications were: Theoretical and general aspects of libraries and information(27); Information use and sociology of information(80);Users,literacy and reading(13);Libraries as physical collections(30);Publishing and legal issues(57);Management(13);Industry, profession and education(36);Information sources, supports, channels(113) ; Information treatment for information services, Information functions and techniques (101); Technical services libraries, archives and museums(25); Housing technologies(1); Information technology and library technology(92); and Inter-domainery (395) i.e. having specifications of two or more than two JITA classes
sj-docx-1-pie-10.1177_09544089221087819 - Supplemental material for Finite element analysis and experimental investigation of moving heat source model for GMAW deposited mild steel weld bead
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089221087819 for Finite element analysis and experimental investigation of moving heat source model for GMAW deposited mild steel weld bead by Mohd Aslam and Chinmaya Kumar Sahoo in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-docx-1-pie-10.1177_09544089221140218 - Supplemental material for Machinability characteristics analysis of hard turning operation on AISI 4340 steel using physical vapor deposition multilayer coated carbide cutting tool in the dry environment
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089221140218 for Machinability characteristics analysis of hard turning operation on AISI 4340 steel using physical vapor deposition multilayer coated carbide cutting tool in the dry environment by Rabinarayan Bag, Amlana Panda, Ashok Kumar Sahoo and Ramanuj Kumar in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-doc-1-pie-10.1177_09544089211063712 - Supplemental material for Investigation on surface roughness, tool wear and cutting power in MQL turning of bio-medical Ti-6Al-4V ELI alloy with sustainability
No full textSupplemental material, sj-doc-1-pie-10.1177_09544089211063712 for Investigation on surface roughness, tool wear and cutting power in MQL turning of bio-medical Ti-6Al-4V ELI alloy with sustainability by K M Rajan, Ashok Kumar Sahoo, Bharat Chandra Routara and Ramanuj Kumar in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-docx-1-pie-10.1177_09544089231169655 - Supplemental material for Recent research progress on various cooling and lubrication techniques used in sustainable hard machining: A comprehensive review
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231169655 for Recent research progress on various cooling and lubrication techniques used in sustainable hard machining: A comprehensive review by Saswat Khatai, Ashok Kumar Sahoo, Ramanuj Kumar and Amlana Panda in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
The effect of gas hydrate saturation and distribution on the geophysical properties of marine sediments
No full textGas hydrates are ice–like compounds found in marine sediments and permafrosts. A significant fraction of all known hydrocarbons in nature is in the form of hydrate. Gas hydrates are a potential energy resource, with possible roles in seafloor slope stability and climate change. As such, improved geophysical methods are needed to identify and quantify in situ natural hydrates to better study their potential impacts. Current estimates of the distribution and volume of gas hydrates vary widely, by orders of magnitude, largely because of uncertainties in geophysical inversion results. The presence of hydrate affects the geophysical properties of the host sediment, creating anomalies that can be detected by seismic or electrical methods measurements. However, the precise relationships between measured geophysical properties and hydrate content (and distribution) are not fully understood, leading to uncertainties in hydrate estimates. Previous studies have shown that both the hydrate saturation (content) and its distribution (morphology or habit) affect the geophysical properties of the host sediment, and separating these effects presents a challenge to geophysical data interpretation. As this knowledge is generally required to interpret field data, this thesis instead seeks to gain this understanding from controlled laboratory experimental studies.I studied laboratory hydrate formation and dissociation in Berea sandstone and Leighton Buzzard sand to understand their effect on P- and S-wave velocities and attenuations, and on electrical resistivity. I used high resolution synchrotron radiation X-ray tomography (SRXCT) to visualize the pore-scale evolution of hydrate morphology with saturation. These observations could be important for seismic data interpretation in terms of hydrate content and sediment strength, which are needed for natural resource and geohazard assessments (also for joint seismic and electromagnetic survey data interpretation). Hence, I was able to observe how hydrate distribution within the pores (morphology or habit) changes with hydrate formation and dissociation, and how these changes affect the P- and S-wave velocities and attenuations. I calculated hydrate saturation continuously from changes in pressure and temperature and independently from electrical resistivity during hydrate formation and dissociation. I applied a new rock physics model to relate P- and S-wave velocities and attenuations with changes in hydrate saturation and morphology.I found that not all the gas formed hydrate, even when the system was under hydrate stability conditions with excess water. The synchrotron CT results suggest that the dominant mechanism for co-existing gas is the formation of hydrate films on gas bubbles; these bubbles either rupture, releasing trapped gas, or remain trapped within an aggregate of hydrate grains. From a geophysical remote sensing perspective, such co-existing gas could cause errors in hydrate saturation estimates from electrical resistivity as both gas and hydrate are resistive compared to saline pore fluid. I saw that hydrate starts forming in the pore-floating morphology (where hydrate grains are surrounded by brine) and evolves into the pore-bridging morphology (where hydrate connects mineral grains). Eventually, hydrate from adjacent pores joins and forms a pore hydrate framework, interlocking with the sand grain framework and separated by thin water films. I was able to relate these changes in morphology to our elastic wave measurements using the HBES (Hydrate Bearing Effective Sediment) rock physics model. For low hydrate saturations, both P and S wave velocity follows the pore-floating model curve. As hydrate formation continues, the P-wave velocity follows the pore-bridging model curve, similar to other studies. In contrast, the S-wave velocity was lower than the pore-bridging model but higher than the pore-floating model curves. I think that the presence of water films between hydrate and the rock frame inhibited the ability of pore-bridging hydrate to increase the frame shear modulus. The higher S-wave velocity than the pore-floating model predictions is likely due to interlocking rock and pore-bridging hydrate frameworks. The magnitude of relative changes in attenuation is much higher than that of velocity due to changes in hydrate content and distribution. Elastic wave attenuation frequency spectra between 448 and 782 kHz show systematic and repeatable changes during hydrate formation and dissociation. In our experiments, the dominant mechanism of attenuation and velocity changes with an increase in hydrate saturation is (i) a decrease in methane gas bubble radius and (ii) an increase in secondary porosity with hydrate formation. The accurate measurement of both velocity and attenuation at multiple frequencies in the pulse-echo system allow us to constrain the dominant attenuation mechanisms using the HBES rock physics model.Overall, I conclude that hydrate-sediment systems are complex with interlocking solid hydrate aggregate and host grain frameworks separated by water films, with isolated pockets of gas within the hydrate. Such an interlocking pore hydrate framework and co-existing gas, if widespread in nature, should be considered in hydrate quantification from elastic wave velocities. For more reliable estimates of in situ hydrate, multiple geophysical parameter measurements are required (e.g., P and S wave velocities and attenuation, electrical resistivity, and at multiple frequencies), and hydrate estimates from seismic velocities alone could lead to significant errors at low hydrate saturations (< 40%)
Interpretation of force vector recorder data describing buoy system dynamics
No full textThesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.Microfiche copy available in Archives and Aero.Includes bibliographical references.by Prafulla K. Padhi.M.S
sj-docx-1-pie-10.1177_09544089221093309 - Supplemental material for Turning performance analysis and optimization of processing parameters using GRA-PSO approach in sustainable manufacturing
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089221093309 for Turning performance analysis and optimization of processing parameters using GRA-PSO approach in sustainable manufacturing by Ramai Ranjan Panigrahi, Amlana Panda, Ashok Kumar Sahoo, Ramanuj kumar and Rasmi Ranjan Mishra in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Coefficients bounds on a certain class of multivalent analytic functions / Laxmipriya Parida and Ashok Kumar Sahoo
No full textIn the present work a sub-class Rbp,n (a1,c1,S,T) of f∈Ap(n) is defined by using a linear operator Lp (a1,c1) and obtained sufficient condition in terms of the coefficients of f∈Ap(n) to be a member of this class. Furthermore, the Fekete-Szego problem is completely solved and found that the functional |ap+3ap+1-a2p+2 | is bounded. Finally, the sharpness of the associated estimates is also studied
Sustainable Environmental Technologies
No full textThis Topic Reprint will discuss the latest technological developments and cutting-edge research in “sustainable/green technologies”, especially in areas like waste-to-energy, sustainable materials, green technology for environmental remediation, renewable/clean energy, greenhouse gas reduction, climate change mitigation, resource recovery, natural resource management, and AL/ML use in environmental sustainability, with the goal of addressing the most pressing environmental issues facing our society. In this Reprint, leading experts in this field shared their research findings, key challenges, and future prospects for advancing these technologies across various sectors in the field of environmental sustainability to provide technological solutions to create a more sustainable and resilient planet for future generations
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