Relevant bibliographies by topics / Geo-electric

Academic literature on the topic 'Geo-electric'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Geo-electric"

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Tang, Bo, Fei Qiao, Guang Zu Ge, Zi Hang Qu, Ying Huang, and Jian Xiong Zhu. "Research of Geoelectric Field Observation Interference with Different Electrode Arrangements from UHVDC Power Lines." Applied Mechanics and Materials 380-384 (August 2013): 3262–65. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3262.

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The interference from UHVDC power lines is a key issue puzzling the geo-electric field observation in seismic station. According to the working principle of geo-electric field observation instrument, the interference reason on geo-electric field observation is analyzed, which potential distribution of the electrodes in soil of geo-electric field observation instrument is changed by the ground current from ground electrode of power line. Based on the different electrode arrangements, the electric field calculation model at different positions away from ground electrode is established, and thus the variation could be acquired. The results show that interference values are affected due to the electrode spans and the electrode arrangement directions, and there has the minimum interference when the electrode span is 100 m or the angle between line of two electrodes and radial line of ground electrode is 45°.
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Prevot, D., Y. Borthomieu, F. Malet, C. Rebuffel, A. Carre, and C. Cenac-Morthe. "Saft Solutions For Full Geo Electric Propulsion." E3S Web of Conferences 16 (2017): 17005. http://dx.doi.org/10.1051/e3sconf/20171617005.

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A Allen, Dr David. "Water seepage investigation using geo-electric streamers." ASEG Extended Abstracts 2012, no. 1 (December 2012): 1–4. http://dx.doi.org/10.1071/aseg2012ab046.

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Ye, Lijun, Chunyang Liu, Wenshan Zhu, Haining Yin, Fucheng Liu, and Hexi Baoyin. "North/South Station Keeping of the GEO Satellites in Asymmetric Configuration by Electric Propulsion with Manipulator." Mathematics 10, no. 13 (July 4, 2022): 2340. http://dx.doi.org/10.3390/math10132340.

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Geosynchronous orbit (GEO) is a very important strategic resource. In order to maximize the utilization of the GEO resources, the use of all-electric propulsion GEO platforms can greatly extend the service life of satellites. Therefore, this paper proposes a control scheme of the north/south station keeping (NSSK) by using electric propulsion with a manipulator. First, on the basis of the traditional calculation method of the semi-diurnal period of the orbital inclination, the calculation method of the semi-monthly period and the semi-annual period of the orbital inclination are proposed. The new method can reduce the fuel consumption and reduce the control amount and control frequency of the station keeping (SK). Secondly, a fuel-optimized NSSK algorithm by using electric propulsion with a manipulator is proposed. The algorithm can not only be applied to a large initial orbital inclination but also can unload the large angular momentum of the asymmetric satellites while keeping the north/south station, thereby avoiding the loss of control of the satellite’s attitude. The research results of this paper provide a new idea for the SK control of the GEO satellites and have great engineering application value.
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Reza, AHM Selim, Quamrul Hasan Mazumder, and Mushfique Ahmed. "Geo-electrical Resistivity Survey in the High Barind for the Delineation of Aquifer Geometry." Rajshahi University Journal of Science 39 (October 9, 2013): 27–37. http://dx.doi.org/10.3329/rujs.v39i0.16540.

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Geo-electrical resistivity techniques have been employed in the High Barind as a reconnaissance investigation for the subsurface lithology. Out of 13 upazillas, comprising the Barind tract, Sapahar and Porsha Upazillas, situated in the High Barind are badly affected by water shortage. Vertical electrical soundings (VES) were executed using Schlumberger configuration in different areas taking the current electrode separation up to 170 meters. Direct method technique was employed to evaluate the geo-electric layer such as resistivity and thickness of the discrete layers. The results of the resistivity survey give the subsurface information consisting of three to four layers. The results of geo-electric sounding have been compared with the geological section wherever available. DOI: http://dx.doi.org/10.3329/rujs.v39i0.16540 Rajshahi University J. of Sci. 39, 27-37 (2011)
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Doumbia, Vafi, Kouadio Boka, Nguessan Kouassi, Oswald Didier Franck Grodji, Christine Amory-Mazaudier, and Michel Menvielle. "Induction effects of geomagnetic disturbances in the geo-electric field variations at low latitudes." Annales Geophysicae 35, no. 1 (January 4, 2017): 39–51. http://dx.doi.org/10.5194/angeo-35-39-2017.

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Abstract. In this study we examined the influences of geomagnetic activity on the Earth surface electric field variations at low latitudes. During the International Equatorial Electrojet Year (IEEY) various experiments were performed along 5° W in West Africa from 1992 to 1995. Among other instruments, 10 stations equipped with magnetometers and telluric electric field lines operated along a meridian chain across the geomagnetic dip equator from November 1992 to December 1994. In the present work, the induced effects of space-weather-related geomagnetic disturbances in the equatorial electrojet (EEJ) influence area in West Africa were examined. For that purpose, variations in the north–south (Ex) and east–west (Ey) components of telluric electric field were analyzed, along with that of the three components (H, D and Z) of the geomagnetic field during the geomagnetic storm of 17 February 1993 and the solar flare observed on 4 April 1993. The most important induction effects during these events are associated with brisk impulses like storm sudden commencement (ssc) and solar flare effect (sfe) in the geomagnetic field variations. For the moderate geomagnetic storm that occurred on 17 February 1993, with a minimum Dst index of −110 nT, the geo-electric field responses to the impulse around 11:00 LT at LAM are Ex = 520 mV km−1 and Ey = 400 mV km−1. The geo-electric field responses to the sfe that occurred around 14:30 LT on 4 April 1993 are clearly observed at different stations as well. At LAM the crest-to-crest amplitude of the geo-electric field components associated with the sfe are Ex = 550 mV km−1 and Ey = 340 mV km−1. Note that the sfe impact on the geo-electric field variations decreases with the increasing distance of the stations from the subsolar point, which is located at about 5.13° N on 4 April. This trend does not reflect the sfe increasing amplitude near the dip equator due the high Cowling conductivity in the EEJ belt.
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Omowumi, Falae Philips. "Application of Electrical Resistivity in Buildings Foundation Investigation in Ibese Southwestern Nigeria." Asia Pacific Journal of Energy and Environment 1, no. 2 (December 31, 2014): 91–102. http://dx.doi.org/10.18034/apjee.v1i2.214.

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Application of geophysical investigation has been carried out using Vertical Electrical Sounding (VES) at the proposed building site in Ibese Southwest Nigeria to determine the geophysical parameters that can be used to evaluate the structural competence of the subsurface geological characteristics of the site for construction purposes and building development. The Schlumberger configuration was used for the data acquisition. One-dimensional numerical inversion of individual DC resistivity was used to enhance the processing of the results for better achievement of the aim of the study. Models obtained from the 2D inversion of each VES were used for construction of geo-electric sections which exhibit the main geo-electric characteristics of the geological units present in the area. The interpretation results showed that the geo-electric sections consist of three-four layers namely: topsoil, pebble clay, limestone and sand/limestone. The layer resistivities and thicknesses range from 11 - 404 Ohm-m/0.4 - 1.5 m, 2-210 Ohm-m/ 0.8 - 9.2m and 33 - 160Ohm-m respectively. The investigation revealed that the sand/limestone litho unit is to be the most competent for shallow foundation for small to medium engineering structures.
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Lu, Wenqiang, Haoguang Wang, Guoqiang Wu, and Yong Huang. "Orbit Determination for All-Electric GEO Satellites Based on Space-Borne GNSS Measurements." Remote Sensing 14, no. 11 (May 31, 2022): 2627. http://dx.doi.org/10.3390/rs14112627.

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Orbit accuracy of the transfer orbit and the mission orbit is the basis for the orbit control of all-electric-propulsion Geostationary Orbit (GEO) satellites. Global Navigation Satellite System (GNSS) simulation data are used to analyze the main factors affecting GEO satellite orbit prediction accuracy under the no-thrust condition, and an electric propulsion calibration algorithm is designed to analyze the orbit determination and prediction accuracy under the thrust condition. The calculation results show that the orbit determination accuracy of mission orbit and transfer orbit without thrust is better than 10 m using onboard GNSS technology. The calibration accuracy of electric thrust is about 10−9 m/s2 and 10−7 m/s2 with 40 h and 16 h arc length, respectively, using the satellite self-positioning data of 100 m accuracy to calibrate the electric thrust. If satellite self-positioning data accuracy is at the 10 m level, the electric thrust calibration accuracy can be improved by about one order of magnitude, and the 14-day prediction accuracy of the transfer orbit with thrust is better than 1 km.
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Rabinah, A. H., Kusnadi, J. D. Anggraeni, M. Arisalwadi, and E. Agustriani. "Hydrogeology estimation using geo-electric survey in Sekotong, Lombok Barat." IOP Conference Series: Earth and Environmental Science 413 (January 2, 2020): 012005. http://dx.doi.org/10.1088/1755-1315/413/1/012005.

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Shen, Junfeng, Xuhui Shen, Qian Liu, and Na Ying. "The thermo-electric effect of magnetite and the mechanism of geo-electric abnormalities during earthquakes." Geoscience Frontiers 1, no. 1 (October 2010): 99–104. http://dx.doi.org/10.1016/j.gsf.2010.08.004.

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Dissertations / Theses on the topic "Geo-electric"

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Hales, Debbie. "Humidity dependent impedance of Zn(_x)Co(_2-x)GeO(_4)." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4298/.

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Zn(_x)Co(_2-x)GeO(_4) materials were prepared and the variation in structure with composition was investigated using XED, SEM and EDX analysis. Limited series of solid solution were identified at both ends of the compositional range. D C electrical measurements were carried out to characterize the variation in the resistivity of the materials with humidity. Resistivities of the order of 10(^8) Ω m were observed in dry conditions, decreasing by 4 to 5 orders of magnitude with increasing humidity. Resistivity was not found to vary greatly with composition. Resistivity was temperature dependent, increasing by 1 to 2 orders of magnitude for a 70 C decrease in temperature. A C impedance measurements were performed to gain an understanding of the mechanism of the humidity dependent conductivity. At low frequencies impedance was found to be independent of frequency and humidity dependent. At high frequencies impedance was found to be inversely proportional to frequency and independent of humidity. The break point frequency was also humidity dependent and an increase in the impedance indicated inductive-type behaviour. Complex plane representation of the impedance gave a distorted semicircle at high frequencies and a low frequency tail. At high humidities the tail appears as a straight line, inclined at approximately 45 . At medium levels of humidity a distinctive loop is apparent at the intersection between the semicircle and the tail, corresponding to the inductive behaviour indicated at the break point frequency. The impedance response was modelled by an equivalent circuit consisting of various ideal and constant phase (dispersive) elements. The proposed mechanism of humidity-dependent conductivity is due to chemisorption and physisorption of water vapour from the atmosphere at the surface of the material, It is suggested that conduction occurs by hopping of protons between cheraisorbed hydroxyl groups at low humidities, by diffusion of H(_3)O(^+) ions between the hydroxyl groups at intermediate humidities and by hopping of protons between physisorbed H(_3)O(^+) ions (Grotthus Chain reaction) at high humidities.
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Wiese, Timothy C. "DC anisotropic resistivity sensitivity and inversion." Thesis, 2012. http://hdl.handle.net/2440/79579.

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Many rocks and layered/fractured sequences have a clearly expressed electrical anisotropy, although it is rare in practice to incorporate anisotropy into the interpretation of electrical resistivity survey data. This thesis comprises a series of journal papers directed at increasing understanding of electrical anisotropy in resistivity investigations. Particular attention is given to how anisotropy affects both forward modelling and the resistivity inverse problem. Chapter 2 derives the analytic solutions for the electric potential, current density and Fréchet derivatives inside a 3D tilted transversely isotropic medium. The solutions hold for a surface current source above an anisotropic but otherwise homogeneous medium. Profiles for potential, current density and sensitivity are presented for various strike and dip orientations of the axis of symmetry. Equipotentials exhibit an elliptical pattern and are not orthogonal to the current density vectors. Sensitivity patterns are strongly asymmetric compared to the isotropic case, with strong dependence on the axis of symmetry direction. Chapter 3 presents a general numerical formulation for calculating the electric potential and Fréchet derivatives in an arbitrary 3D anisotropic heterogeneous medium. It is based on a new Gaussian quadrature grid formulation for calculating the 3D Green’s functions. Explicit expressions for the Green’s functions and their gradients are developed. A critical factor in the equations is the derivative of the conductivity tensor with respect to the principal conductivity values and angles defining the axes of symmetry. Special cases such as an isotropic earth and tilted transversely isotropic media emerge from the general solutions. Chapter 4 makes use of the given analytic and numerical sensitivity formulations to examine the various sensitivity patterns which emerge for different uniform anisotropic media and for various surface electrode array configurations. Pole-pole, pole-dipole, Wenner and square arrays produce distinctive patterns, valuable in assessing resolution. It was found that sensitivity patterns vary greatly for different anisotropic model parameters in terms of strength and shape, depending on the nature of the anisotropy. Chapter 5 presents a reformulation for the description of anisotropic media in terms of the coefficient of anisotropy λ and the geometric mean (average) conductivity σm. Sensitivity functions are plotted and described for these parameters. Also comparison of sensitivity patterns for isotropic, homogeneous models with those for equivalent transversely isotropic medium parameters is given by plotting the ratios of the Fréchet derivatives of the anisotropic to the isotropic values. Prominent differences in both sign and magnitude are observed, especially for steep dips and strong anisotropy. The plots highlight the dangers of an isotropic assumption. Even for mildly anisotropic rock (λ< 1.2), there is potential for error in interpretation. Chapter 6 presents 2.5D synthetic inversion experiments for various electrode configurations and anisotropic models. The experiments compare image reconstructions obtained using the correct anisotropic inversion code and those obtained using the false but widely used isotropic assumption. Superior reconstruction in terms of reduced data misfit, true anomaly shape and position is obtained when the correct anisotropic assumption is employed. When an isotropic inversion algorithm is used to invert anisotropic data, the images are dominated by patterns of banded artefacts and high data misfits. Various data sets were investigated and evaluated for the accuracy of the inversion result, the corresponding eigenspectra (information content) of the pseudo Hessian matrix and the relative resolution plots. An effective data selection strategy based on high sensitivity measurements is presented. It drastically reduces the number of data to be inverted but still produces comparable results to that obtained from the comprehensive data set. Inversion was carried out using transversely isotropic model parameters described in two different co-ordinate frames for the conductivity tensor: Cartesian versus natural or eigenframe. The Cartesian frame provided a more stable inversion product. This can be explained by the differing magnitudes of the eigenspectra of the pseudo-Hessian matrix for the two model descriptions.
Thesis (Ph.D.) -- University of Adelaide, School of Chemistry and Physics, 2012
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Books on the topic "Geo-electric"

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Metcalf, Myers Roger, and United States. National Aeronautics and Space Administration., eds. Launch vehicle and power level impacts on electric GEO insertion: Under contract NAS3-27186. [Washington, DC: National Aeronautics and Space Administration, 1996.

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Evolving the SP-100 reactor in order to boost large payloads to GEO and to low lunar orbit via nuclear-electric propulsion. [Washington, DC]: National Aeronautics and Space Administration, 1991.

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United States. National Aeronautics and Space Administration., ed. Evolving the SP-100 reactor in order to boost large payloads to GEO and to low lunar orbit via nuclear-electric propulsion. [Washington, DC]: National Aeronautics and Space Administration, 1991.

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United States. National Aeronautics and Space Administration., ed. Evolving the SP-100 reactor in order to boost large payloads to GEO and to low lunar orbit via nuclear-electric propulsion. [Washington, DC]: National Aeronautics and Space Administration, 1991.

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Government, U. S., National Aeronautics and Space Administration (NASA), World Spaceflight News (WSN), and National Science and Technology Council. National Space Weather Action Plan and Strategy: Potential Effects - Power Outages, Infrastructure, Communication, Mitigation Plans, Forecasting, Induced Geo-Electric Fields, Solar Radio Bursts. Independently Published, 2017.

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J, Pidgeon David, and United States. National Aeronautics and Space Administration., eds. Advanced propusion for LEO and GEO platforms. [Washington, DC]: National Aeronautics and Space Administration, 1990.

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Book chapters on the topic "Geo-electric"

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Burlov, Viacheslav, Viktor Mankov, Alexandr Tumanov, and Maksim Polyukhovich. "Safety Management Technology of Electric Networks Using Geo Information System." In International Scientific Conference Energy Management of Municipal Facilities and Sustainable Energy Technologies EMMFT 2019, 46–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57453-6_5.

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Naidu, G. Dhanunjaya. "Geo-Electric Crustal Structure Along the Galangi-Brahman-Wada (GB) Traverse." In Deep Crustal Structure of the Son-Narmada-Tapti Lineament, Central India, 121–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28442-7_7.

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Topputo, Francesco, and Simone Ceccherini. "A Catalogue of Parametric Time-Optimal Transfers for All-Electric GEO Satellites." In Springer Optimization and Its Applications, 459–78. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-10501-3_17.

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Brand, André, Jochen Fiedler, Thomas Halfmann, and Thorsten Weyh. "Statistical evaluation of geo-referenced indicators for the design of electric drives." In Proceedings, 339–54. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-29717-6_23.

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Dennig, Hans-Jörg, Adrian Burri, and Philipp Ganz. "BICAR—Urban Light Electric Vehicle." In Small Electric Vehicles, 157–66. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65843-4_12.

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AbstractThis paper describes the technical features of the light electric vehicle (L2e-category) named BICAR. This specially designed vehicle is an all-in-one emissions-free micro-mobility solution providing a cost-effective and sustainable mobility system while supporting the transition towards a low carbon society (smart and sustainable city concept). The BICAR represents part of a multimodal system, complementing public transport with comfort and safety, relieving inner-city congestion and solving the “first and last mile” issue. The BICAR is the lightest and smallest three-wheel vehicle with weather protection. Due to the space-saving design, six to nine BICARS will fit into a single standard parking space. Safety is increased by an elevated driving position and a tilting mechanism when cornering. The BICAR achieves a range of 40–60 km depending on the battery package configuration in urban transport at a speed of 45 km/h. It features a luggage storage place and exchangeable, rechargeable batteries. The BICAR can be driven without a helmet thanks to the safety belt system, which is engineered for street approved tests. The BICAR has an integrated telematic box connected to the vehicle electronics and communicating with the dedicated mobile application, through which the BICAR can be geo-localised, reserved, locked/unlocked and remotely maintained.
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Naidu, G. Dhanunjaya. "Geo-Electric Crustal Structure Along the Sanawad-Chopda (SC) Traverse Across the NSL Zone." In Deep Crustal Structure of the Son-Narmada-Tapti Lineament, Central India, 49–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28442-7_4.

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Naidu, G. Dhanunjaya. "Geo-Electric Crustal Structure Along the Andharwadi-Balapur (Ab) Traverse Across the NSL Zone." In Deep Crustal Structure of the Son-Narmada-Tapti Lineament, Central India, 75–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28442-7_5.

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Naidu, G. Dhanunjaya. "Geo-Electric Crustal Structure Along the Hoshangabad-Ner (HN) Traverse Across the NSL Zone." In Deep Crustal Structure of the Son-Narmada-Tapti Lineament, Central India, 99–119. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28442-7_6.

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Kłos, Marcin Jacek, and Stanisław Krawiec. "Geo-Information Input Data for the Planning Process of Conventional Fleet Conversion towards a 100% Electric Bus Fleet." In Intelligent Solutions for Cities and Mobility of the Future, 49–60. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-91156-0_4.

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Sushkova, Svetlana, Abdulmalik Batukaev, Tatiana Minkina, Elena Antonenko, Irina Deryabkina, Jana Popileshko, and Tamara Dudnikova. "PAHs Monitoring in Soils Affected by Electric Power Station." In Recent Advances in Geo-Environmental Engineering, Geomechanics and Geotechnics, and Geohazards, 49–51. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01665-4_12.

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Conference papers on the topic "Geo-electric"

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Muhammad Abdullah, M. A., S. H. Syouma Hikmahtiar, and P. A. Putri Afifah Analystian. "Gravity and Geo-Electric." In 7th Congress of the Balkan Geophysical Society. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20131660.

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Duchemin, Olivier, Vaitua Leroi, Vanessa Vial, Michael Öberg, Éric Bourguignon, Thierry Scalais, Alain Demairé, and Hendrik Lübberstedt. "Electric Propulsion Thruster Assembly for Small GEO." In 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-6696.

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HOBBS, L., and J. STARK. "Optimisation of electric propulsion for GEO missions." In 25th Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-2371.

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Duchemin, Olivier, Antoine Caratge, Nicolas Cornu, Jean-Michel Sannino, Francois Lassoudiere, and Anthony Lorand. "Ariane 5-ME and Electric Propulsion: GEO Insertion Options." In 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-6084.

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P Maurya, Ved, Leonardo G. Miquelutti, Sergio L. Fontes, and Emanuele F. La Terra. "An Overview of Geo-electric Dimensionality of Paraná Basin." In Simpósio Brasileiro de Geofísica. Sociedade Brasileira de Geofísica, 2016. http://dx.doi.org/10.22564/7simbgf2016.118.

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Ivanov, S., Y. Davidenko, E. Kudryavceca, P. Legeydo, and P. C. H. Veeken. "Geo-electric Surveying, a Useful Tool for Hydrocarbon Exploration." In 70th EAGE Conference and Exhibition - Workshops and Fieldtrips. European Association of Geoscientists & Engineers, 2008. http://dx.doi.org/10.3997/2214-4609.20148033.

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Shi, Renhe, Li Liu, Teng Long, Yufei Wu, and G. Gary Wang. "Multi-Fidelity Modeling and Adaptive Co-Kriging Based Optimization for All-Electric GEO Satellite Systems." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85335.

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All-electric GEO satellite systems design is a challenging multidisciplinary design optimization (MDO) problem, which is computation-intensive due to the employment of expensive simulations. In this paper, the all-electric GEO satellite MDO problem with multi-fidelity models is investigated. The MDO problem involving six inter-coupled disciplines is formulated to minimize the total mass of the satellite system subject to a number of engineering constraints. To reduce the computational cost of the multidisciplinary analysis (MDA) process, multi-fidelity transfer dynamics models and finite element analysis (FEA) models are developed for the geosynchronous transfer orbit (GTO) and structure disciplines respectively. To effectively solve the all-electric GEO satellite MDO problem using multi-fidelity models, an adaptive Co-Kriging based optimization framework is proposed. In this framework, the samples from a high-fidelity MDA process are integrated with those from a low-fidelity MDA process to create a Co-Kriging metamodel with moderate computational cost for optimization. Besides, for refining the Co-Kriging metamodels, a multi-objective adaptive infill sampling approach is developed to produce the infill sample points in terms of expected improvement (EI) and probability of feasibility (PF) functions. Optimization results show that the proposed optimization framework can significantly reduce the total mass of satellite system with limited computational budget, which demonstrates the effectiveness and practicality of the multi-fidelity modeling and adaptive Co-Kriging based optimization framework for all-electric GEO satellite systems design.
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Fazelvalipour, A. "Geo-Electric Three-Dimension Surveys for Detection of Subsurface Structures." In Second International Conference on Engineering Geophysics. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20131928.

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Fazelvalipour, A. "Geo Electric Three-Dimension Surveys for Detection of Subsurface Structures." In 7th Congress of the Balkan Geophysical Society. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20131661.

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Oleson, Steven, and Roger Myers. "Launch vehicle and power level impacts on electric GEO insertion." In 32nd Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-2978.

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Reports on the topic "Geo-electric"

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Richardson, R. A., E. J. Yarger, and G. H. Cole. Dynamometer testing of the U.S. Electricar Geo Prizm conversion electric vehicle. Office of Scientific and Technical Information (OSTI), April 1996. http://dx.doi.org/10.2172/236257.

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Russo, Margherita, Fabrizio Alboni, Jorge Carreto Sanginés, Manlio De Domenico, Giuseppe Mangioni, Simone Righi, and Annamaria Simonazzi. The Changing Shape of the World Automobile Industry: A Multilayer Network Analysis of International Trade in Components and Parts. Institute for New Economic Thinking Working Paper Series, January 2022. http://dx.doi.org/10.36687/inetwp173.

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In 2018, after 25 years of the North America Trade Agreement (NAFTA), the United States requested new rules which, among other requirements, increased the regional con-tent in the production of automotive components and parts traded between the three part-ner countries, United States, Canada and Mexico. Signed by all three countries, the new trade agreement, USMCA, is to go into force in 2022. Nonetheless, after the 2020 Presi-dential election, the new treaty's future is under discussion, and its impact on the automo-tive industry is not entirely defined. Another significant shift in this industry – the acceler-ated rise of electric vehicles – also occurred in 2020: while the COVID-19 pandemic largely halted most plants in the automotive value chain all over the world, at the reopen-ing, the tide is now running against internal combustion engine vehicles, at least in the an-nouncements and in some large investments planned in Europe, Asia and the US. The definition of the pre-pandemic situation is a very helpful starting point for the analysis of the possible repercussions of the technological and geo-political transition, which has been accelerated by the epidemic, on geographical clusters and sectorial special-isations of the main regions and countries. This paper analyses the trade networks emerg-ing in the past 25 years in a new analytical framework. In the economic literature on inter-national trade, the study of the automotive global value chains has been addressed by us-ing network analysis, focusing on the centrality of geographical regions and countries while largely overlooking the contribution of countries' bilateral trading in components and parts as structuring forces of the subnetwork of countries and their specific position in the overall trade network. The paper focuses on such subnetworks as meso-level structures emerging in trade network over the last 25 years. Using the Infomap multilayer clustering algorithm, we are able to identify clusters of countries and their specific trades in the automotive internation-al trade network and to highlight the relative importance of each cluster, the interconnec-tions between them, and the contribution of countries and of components and parts in the clusters. We draw the data from the UN Comtrade database of directed export and import flows of 30 automotive components and parts among 42 countries (accounting for 98% of world trade flows of those items). The paper highlights the changes that occurred over 25 years in the geography of the trade relations, with particular with regard to denser and more hierarchical network gener-ated by Germany’s trade relations within EU countries and by the US preferential trade agreements with Canada and Mexico, and the upsurge of China. With a similar overall va-riety of traded components and parts within the main clusters (dominated respectively by Germany, US and Japan-China), the Infomap multilayer analysis singles out which com-ponents and parts determined the relative positions of countries in the various clusters and the changes over time in the relative positions of countries and their specialisations in mul-tilateral trades. Connections between clusters increase over time, while the relative im-portance of the main clusters and of some individual countries change significantly. The focus on US and Mexico and on Germany and Central Eastern European countries (Czech Republic, Hungary, Poland, Slovakia) will drive the comparative analysis.
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