Journal articles: 'Propelling power'

1

Toussaint, H. M., A. Beelen, A. Rodenburg, et al. "Propelling efficiency of front-crawl swimming." Journal of Applied Physiology 65, no. 6 (1988): 2506–12. http://dx.doi.org/10.1152/jappl.1988.65.6.2506.

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In this study the propelling efficiency (ep) of front-crawl swimming, by use of the arms only, was calculated in four subjects. This is the ratio of the power used to overcome drag (Pd) to the total mechanical power (Po) produced including power wasted in changing the kinetic energy of masses of water (Pk). By the use of an extended version of the system to measure active drag (MAD system), Pd was measured directly. Simultaneous measurement of O2 uptake (VO2) enabled the establishment of the relationship between the rate of the energy expenditure (PVO2) and Po (since when swimming on the MAD system Po = Pd). These individual relationships describing the mechanical efficiency (8-12%) were then used to estimate Po in free swimming from measurements of VO2. Because Pd was directly measured at each velocity studied by use of the MAD system, ep could be calculated according to the equation ep = Pd/(Pd + Pk) = Pd/Po. For the four top class swimmers studied, ep was found to range from 46 to 77%. Total efficiency, defined as the product of mechanical and propelling efficiency, ranged from 5 to 8%.

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Kagemoto, H., M. J. Wolfgang, D. K. P. Yue, and M. S. Triantafyllou. "Force and Power Estimation in Fish-Like Locomotion Using a Vortex-Lattice Method." Journal of Fluids Engineering 122, no. 2 (1999): 239–53. http://dx.doi.org/10.1115/1.483251.

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The forces and power needed for propelling at constant speed an actively swimming flexible fish-like body are calculated. A vortex-lattice method based on a linearized theory is employed and the results are compared against slender body theory predictions, as well as experimental data from an eight-link robotic instrument, the RoboTuna. Qualitative agreement is found between our method and slender body theory; with quantitative agreement over certain parametric ranges and disagreement for other ranges of practical interest. The present linearized vortex lattice calculations predict the power needed for propelling the RoboTuna with less than 20 percent error in most experiments conducted. [S0098-2202(00)01202-5]

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Wieczorek, Bartosz, Mateusz Kukla, Dominik Rybarczyk, and Łukasz Warguła. "Evaluation of the Biomechanical Parameters of Human-Wheelchair Systems during Ramp Climbing with the Use of a Manual Wheelchair with Anti-Rollback Devices." Applied Sciences 10, no. 23 (2020): 8757. http://dx.doi.org/10.3390/app10238757.

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Purpose: The main purpose of the research conducted was the analysis of kinematic and biomechanical parameters measured during manual wheelchair ramp-climbing with the use of the anti-rollback system and the comparison of the values tested with the manual wheelchair climbing the same ramp but without any modifications. The paper presents a quantitative assessment relating to the qualitative research of the anti-rollback system performed by another research team. Method and materials: The article presents the measurement results of the wheelchair motion kinematics and the activity of four upper limb muscles for eight subjects climbing a 4.58° ramp. Each subject propelled the wheelchair both with and without the anti-rollback system. The kinematic parameters were measured by means of two incremental encoders with the resolution of 500 impulses per single revolution of the measurement wheel. Whereas, the muscle activity was measured by means of surface electromyography with the use of Noraxon Mini DTS apparatus equipped with four measurement channels. Results: The surface electromyography measurement indicated an increase in the muscle activity for all four muscles, during the use of the anti-rollback system. The increase was: 18.56% for deltoid muscle anterior, 12.37% for deltoid muscle posteriori, 13.0% for triceps brachii, and 15.44% for extensor carpi radialis longus. As far as the kinematics analysis is concerned, a decrease in the measured kinematic parameters was observed in most participants. The medium velocity of the propelling cycle decreased by 26%. The ratio of the generated power and the loss power in a single propelling cycle λ had decreased by 18%. The least decrease was recorded for the measurement of mechanical energy E and the propelling cycle duration time. For the total mechanical energy, the decrease level was 3%, and for the propelling cycle duration it was 1%. The research carried out did not demonstrate any impact of the anti-rollback system use on the push phase share in the entire propelling cycle.

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Gatta, Giorgio, Matteo Cortesi, Ian Swaine, and Paola Zamparo. "Mechanical power, thrust power and propelling efficiency: relationships with elite sprint swimming performance." Journal of Sports Sciences 36, no. 5 (2017): 506–12. http://dx.doi.org/10.1080/02640414.2017.1322214.

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Bornstein, Josh. "Employees are losing: Have workplace laws gone too far?" Journal of Industrial Relations 61, no. 3 (2019): 438–56. http://dx.doi.org/10.1177/0022185619834321.

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Concern about the economic, social and political cost of growing income inequality is propelling a debate about the loss of employee bargaining power – both in Australia and other Organisation for Economic Co-operation and Development countries. The evidence of a pronounced decline in the bargaining power of employees in the Australian labour market is overwhelming. The decline is consistent with a collapse in workplace bargaining as a result of a bargaining framework that has not kept up with major structural change in the labour market. In the absence of decisive legislative intervention, the decline of employee bargaining power is likely to continue.

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Kolmogorov, Sergei, Andrei Vorontsov, and João Paulo Vilas-Boas. "Metabolic Power, Active Drag, Mechanical and Propelling Efficiency of Elite Swimmers at 100 Meter Events in Different Competitive Swimming Techniques." Applied Sciences 11, no. 18 (2021): 8511. http://dx.doi.org/10.3390/app11188511.

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Eight elite swimmers—four females and four males—were studied, each of whom specialized in different swimming techniques and ranked among the top 10 in the world in the 100 m event in their swimming specialty. Methods included a complex of physiological, biomechanical and hydrodynamic procedures, as well as mathematical modeling. During the special preparation period for the 2017 Swimming World Championship, all subjects performed an 8 × 100 m swimming step-test using their main swimming technique. The relationships between velocity, mechanical and metabolic power were obtained and analyzed for each swimming technique. It was found that, at the last stage of the test, in all swimming techniques, men demonstrated higher values of metabolic power (Pai = 3346–3560 W) and higher mechanical efficiency (eg = 0.062–0.068) than women (Pai = 2248–2575 W; eg = 0.049–0.052). As for propelling efficiency, women (ep = 0.67–0.71) and men (ep = 0.65–0.71) did not differ from each other. Results showed that the frontal component of active drag force is the main reason for the existing differences in maximal swimming velocity between different techniques, since no relevant differences were observed for mechanical and propelling efficiencies among swimming techniques.

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Астанин, Vladimir Astanin, Поливаев, Oleg Polivaev, Бабанин, and Nikolay Babanin. "Reducing dynamic loading of mobile power equipment from external impacts and increase of their traction and dynamic parameters." Forestry Engineering Journal 3, no. 3 (2013): 150–55. http://dx.doi.org/10.12737/1779.

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Increasing energy saturation of modern mobile power equipment (MPE) is accom-panied by an increase in their dynamic loading of the external influences that have an oscillatory character with variable frequency and amplitude, it causes higher vibration processes in the system soil – propelling device – engine and transmission installation, which leads to lower traction qualities, and hence performance deterioration of techno-logical parameters of tillage and destruction of its structure.

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Seki, Hiroaki, Hodaka Amakata, Yoshitsugu Kamiya, and Masatoshi Hikizu. "Development of Hydraulic Drive Drilling Robot with 4-DOF Tool for In-Pipe Repair – Mechanical Design of New Tool –." International Journal of Automation Technology 6, no. 2 (2012): 221–27. http://dx.doi.org/10.20965/ijat.2012.p0221.

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Lately,many developed countries see their sewer pipes getting increasingly aged. They try to extend the life of aging pipes by using teleoperated sewer robots to repair them as buried in the ground rather than replacing them by largescale digging work. Currently available robots, however, have tools with small DOF (Degrees Of Freedom) to do complex work such as drilling, cutting, and grinding. They also have too heavy oilostatic cables to be self-propelling. To cope with these problems, we intend to develop a new type of sewer robots that can be self-propelling by built-in cylinder-type hydraulic power source and are equipped with multiple-DOF tool driven by hydraulic cylinders in parallel links. In this paper, we propose a 4-DOF parallel link type mechanism for the tool that have wide reachable areas and no singular points. The proposed mechanism is so designed as to be able to retain high stiffness in the predetermined reachable areas as required for work inside pipes.

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Tang, Peng, Chuangxin Zhao, Sen Mao, Jiajie Tian, and Shizhe Liang. "Vector ducted propeller aerodynamic modeling and verification testing." Journal of Physics: Conference Series 2720, no. 1 (2024): 012032. http://dx.doi.org/10.1088/1742-6596/2720/1/012032.

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Abstract The tail-sitter aircraft has the advantages of both high-speed cruise and capability of the take-off and land vertically, high-performance control laws usually rely on the accurate flight mechanics model, while its flight aerodynamic modeling is a complex problem. This paper analytically develops an aerodynamic model of its propelling system based on first principles, including three components of a propeller, a vector duct, and eight slipstream vanes. This model can give the propeller’s induced velocity, power, thrust, and moment, also considers the augmented effect of ducted, and the lift and drag forces of vanes. Moreover, a propelling system test bed is built to measure the forces and moments along the body frame, which is composed of the tail-sitter prototype, power, communication link, upper system, and servo drive device. In addition, experimental results show the effectiveness of the model in estimating the thrust and torque with different angles of control vanes, the measured thrust is consistent with the calculated values, and the steering performance of each vane is further examined. The moments exerted on the two axes are linear with the vanes angles, and the symmetry is also well, which is convenient for flight controller design for this type of tail-sitter aircraft.

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Niyozov, Numon, Salamat Saburov, Shaxruz Ganiyev, and Shirinboy Olimov. "AI-powered learning: revolutionizing technical higher education institutions through advanced power supply fundamentals." E3S Web of Conferences 461 (2023): 01092. http://dx.doi.org/10.1051/e3sconf/202346101092.

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The burgeoning technological education landscape mandates a reevaluation of educational methodologies, especially in pivotal domains such as power supply fundamentals within technical higher education institutions. This scientific article explores the imperative role of integrating Artificial Intelligence (AI) in teaching the fundamentals of power supply to students in technical higher education institutions. Acknowledging power supply’s fundamental significance and the evolving educational challenges, we advocate for the utilization of AI-powered platforms, simulations, and adaptive learning systems. Through a comprehensive analysis, we highlight the potential benefits and contextualize the implementation of AI in Uzbekistan’s technical education scenario. By embracing AI-driven educational approaches, Uzbekistan can cultivate a skilled workforce adept in power supply, fostering innovation and propelling the nation towards a technologically advanced future.

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Adetunmbi, AO, and OI Dare Adeniran. "Design of a mini hydro-electric power plant." International Journal of Multidisciplinary Research and Growth Evaluation 5, no. 1 (2024): 18–21. http://dx.doi.org/10.54660/.ijmrge.2024.5.1.18-21.

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The core concept of hydropower centers on capturing the energy produced as water moves from a higher elevation to a lower one. This involves utilizing the resulting water pressure to generate electrical energy. This practical application of hydropower generation theory entails the design and installation of a mini hydropower plant. To assess its performance, a storage tank was strategically positioned at the maximum height to optimize water pressure, and a plastic pipe was employed for transportation. The construction of a turbine and generator, along with the subsequent assembly of their respective components, constitutes the formation of the hydropower plant. The hydro turbine converts water pressure into mechanical shaft power, propelling the electric generator. The outcome is an alternating electromotive force (e.m.f) of 210 Volts at a frequency of 50 Hz, suitable for powering various household electrical appliances.

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12

Cruse, H. "Coactivating Influences Between Neighbouring Legs in Walking Insects." Journal of Experimental Biology 114, no. 1 (1985): 513–19. http://dx.doi.org/10.1242/jeb.114.1.513.

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When the movement of one leg of a walking stick insect is interrupted during the power stroke, the force developed by other legs is increased. This effect is shown to occur between all orthogonal nearest-neighbour legs except for the two hind legs. Such effects do not occur between diagonal or next nearest-neighbour pairs. The possible function of these ‘coactivating’ influences is assumed to be to enable the animal to increase the total force propelling the body.

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Ten Brink, Tobias. "60 jahre NATO." PROKLA. Zeitschrift für kritische Sozialwissenschaft 38, no. 153 (2008): 635–45. http://dx.doi.org/10.32387/prokla.v38i153.456.

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The NATO Alliance is being adapted to a new international situation which is quite the opposite of any harmonious "global village" or "democratic peace". The member states, the most powerful agents within the competitive machinery of global capitalism, are propelling an arms race and a spiral of violence. The Western power elites all agree to use hard power in order to secure the world order and the conditions for an efficient capital accumulation but are at the same time at loggerheads with each other in respect to the hierarchy in the creation of this order. The new US administration will presumably contribute nothing to any serious detente in international relations.

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14

UCHIDA, Shota, Hironori NISHIHARA, Yasunori SHINDO, and Naotake OHTSUKA. "1505 Development of Self-Propelling Capsule Endscope with Power Supplied by Electric Wire." Proceedings of Conference of Kansai Branch 2012.87 (2012): _15–5_. http://dx.doi.org/10.1299/jsmekansai.2012.87._15-5_.

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l.Nadam, G.Kiran, and M.Anjaneyelu. "DESIGN OF SIMULINK-BASED GRID CONNECTED PV CELLS AND WIND-BASED ENERGY GENERATING SYSTEM." Journal of Nonlinear Analysis and Optimization 15, no. 01 (2024): 06–11. http://dx.doi.org/10.36893/jnao.2024.v15i1.006-011.

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Renewable energy sources have displaced traditional energy sources, with significant advances in photovoltaic (PV) and solar cell technology propelling these renewable energy sources (RES) to the forefront of all other RES. PV-based systems have begun to be widely employed in home applications that are connected to the electrical grid, and grid-connected PV power generating systems are now commonplace all over the world. PV producing devices have also been utilized to supplement wind turbines. As a result, hybrid generation systems based on PV and wind technology are being researched for power generation. MATLAB/SIMULINK was used to create a gridconnected PV cell and wind-based energy generation system in this study

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Ma, Ling-Ling, Chao Liu, Sai-Bo Wu, et al. "Programmable self-propelling actuators enabled by a dynamic helical medium." Science Advances 7, no. 32 (2021): eabh3505. http://dx.doi.org/10.1126/sciadv.abh3505.

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Rotation-translation conversion is a popular way to achieve power transmission in machinery, but it is rarely selected by nature. One unique case is that of bacteria swimming, which is based on the collective reorganization and rotation of flagella. Here, we mimic such motion using the light-driven evolution of a self-organized periodic arch pattern. The range and direction of translation are altered by separately varying the alignment period and the stimulating photon energy. Programmable self-propelling actuators are realized via a specific molecular assembly within a photoresponsive cholesteric medium. Through rationally presetting alignments, parallel transports of microspheres in customized trajectories are demonstrated, including convergence, divergence, gathering, and orbital revolution. This work extends the understanding of the rotation-translation conversion performed in an exquisitely self-organized system and may inspire future designs for functional materials and intelligent robotics.

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Zhuang, Laihe, Guoqiang Xu, Bensi Dong, Qihang Liu, Mengchen Li, and Jie Wen. "Exergetic Effects of Cooled Cooling Air Technology on the Turbofan Engine during a Typical Mission." Energies 15, no. 14 (2022): 4946. http://dx.doi.org/10.3390/en15144946.

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The cooled cooling air technology (CCA technology) shows expected performance in solving the growing thermal challenge for advanced aero engines by reducing the temperature of cooling air. The effect of CCA technology on the overall propelling performance with or without adjusting cycle parameters is controversial. Based on this, both the energy and exergy methods have been adopted to elaborate the specific mechanisms of the above energy utilization discrepancy. As a result, the scheme of CCA technology without optimizing cycle parameters has lower propelling work and efficiency with the total exergy destruction increasing 0.5~2%. Oppositely, as for the scheme of CCA with meliorated cycle parameters, the propelling efficiency improved by around 2~4% with total exergy destruction reduced by 1~3.5%. By analyzing the distribution of exergy destruction, the avoidable and unavoidable exergy destruction caused by the combustion chamber, compressors, and turbines accounts for the largest proportion, which indicates that more attention needs to be paid in the future. During the whole flight mission, the percentage of exergy destruction is much higher in supersonic, subsonic cruise, combat, and escape conditions. In conclusion, the improvement of cycle parameters to reduce the exergy destruction should be considered when introducing CCA technology.

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Recalde, Angel, Ricardo Cajo, Washington Velasquez, and Manuel S. Alvarez-Alvarado. "Machine Learning and Optimization in Energy Management Systems for Plug-In Hybrid Electric Vehicles: A Comprehensive Review." Energies 17, no. 13 (2024): 3059. http://dx.doi.org/10.3390/en17133059.

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This paper provides a comprehensive review of machine learning strategies and optimization formulations employed in energy management systems (EMS) tailored for plug-in hybrid electric vehicles (PHEVs). EMS stands as a pivotal component facilitating optimized power distribution, predictive and adaptive control strategies, component health monitoring, and energy harvesting, thereby enabling the maximal exploitation of resources through optimal operation. Recent advancements have introduced innovative solutions such as Model Predictive Control (MPC), machine learning-based techniques, real-time optimization algorithms, hybrid optimization approaches, and the integration of fuzzy logic with neural networks, significantly enhancing the efficiency and performance of EMS. Additionally, multi-objective optimization, stochastic and robust optimization methods, and emerging quantum computing approaches are pushing the boundaries of EMS capabilities. Remarkable advancements have been made in data-driven modeling, decision-making, and real-time adjustments, propelling machine learning and optimization to the forefront of enhanced control systems for vehicular applications. However, despite these strides, there remain unexplored research avenues and challenges awaiting investigation. This review synthesizes existing knowledge, identifies gaps, and underscores the importance of continued inquiry to address unanswered research questions, thereby propelling the field toward further advancements in PHEV EMS design and implementation.

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SUZUKI, Tatsuto, Hironobu UCHIYAMA, and Junichi KURATA. "2823 Power assist control system design of attendant-propelled wheelchairs using attendant propelling dynamics." Proceedings of the JSME annual meeting 2005.4 (2005): 241–42. http://dx.doi.org/10.1299/jsmemecjo.2005.4.0_241.

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Zamparo, P., E. Turri, R. Peterson Silveira, and A. Poli. "The interplay between arms-only propelling efficiency, power output and speed in master swimmers." European Journal of Applied Physiology 114, no. 6 (2014): 1259–68. http://dx.doi.org/10.1007/s00421-014-2860-7.

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Rahul Kumar Jha. "Enhancing Climate Adaptation Through Hybrid Energy Systems." Journal of Electrical Engineering and Automation 5, no. 3 (2023): 310–28. http://dx.doi.org/10.36548/jeea.2023.3.002.

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This review investigates the potential of hybrid energy systems in bolstering climate adaptation within power generation. By seamlessly integrating renewable energy sources with conventional counterparts, these systems offer heightened resilience against climate extremes. This research analyses the multifaceted benefits, address challenges, and present optimization methodologies, emphasizing the interdisciplinary essence of such integration. Case studies showcase the real-world applications. This synthesis underlines the imperative for collaborative efforts across climatology, engineering, and policy domains. The insights garnered guide future research in optimizing hybrid configurations, thus fostering climate resilience and propelling sustainable energy advancements.

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Hori, Masayuki, Takayuki Nimura, Masamichi Miura, et al. "Development of an Inspection Robot for Penstocks." Journal of Robotics and Mechatronics 2, no. 5 (1990): 373–83. http://dx.doi.org/10.20965/jrm.1990.p0373.

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An inspection robot has been developed jointly with the Electric Power Development Co. for the purpose of inspecting the corrosion and coating deterioration of penstocks (3500 to 5000mm) for electric power generation, particularly their sloping sections. This robot is a simplified device which, equipped with a centering apparatus consisting of cylinders, travels in a spiral fashion by pressing its wheels along the surface of a pipe, and is capable of propelling itself to climb the sloping sections of penstocks after passing through their bends and reducers. After testing with penstocks and twice-conducted field tests, a working model has been completed, and it was even possible to get the model to perform the additional task of repairing. We therefore present here a complete report.

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Pradeep, Darsy John, Yellapragada Venkata Pavan Kumar, Bollineni Raja Siddharth, Challa Pradeep Reddy, Mohammad Amir, and Haris M. Khalid. "Critical Performance Analysis of Four-Wheel Drive Hybrid Electric Vehicles Subjected to Dynamic Operating Conditions." World Electric Vehicle Journal 14, no. 6 (2023): 138. http://dx.doi.org/10.3390/wevj14060138.

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Hybrid electric vehicle technology (HEVT) is emerging as a reliable alternative to reduce the constraints of battery-only driven pure electric vehicles (EVs). HVET utilizes an electric motor as well as an internal combustion engine for its operation. These components would work on battery power and fossil fuels, respectively, as a source of energy for vehicle mobility. The power is delivered either from battery or fuel or both sources based on user requirements, road conditions, etc. HEVT uses three major propelling systems, namely, front-wheel drive (FWD), rear-wheel drive (RWD), and four-wheel drive (4WD). In these propelling systems, the 4WD model provides torque to all four wheels at the same time. It uses all four wheels to propel thereby offering better driving capability, better traction, and a strong grip on the surface. The 4WD-based HEVs comprise four architectures, namely, series, parallel, series-parallel, and complex. The literature focuses primarily on any one type of architecture for analysis in the context of component optimization, fuel reduction, and energy management. However, a focus on dynamic analysis that gives a real performance insight was not conducted, which is the main motivation for this paper. The proposed work provides an extensive critical performance analysis of all four 4WD architectures subjected to various dynamic operating conditions (continuous, pulse, and step-up accelerations). Under these conditions, various performance parameters such as speed (of vehicle, engine, and motor), power (of engine and battery), battery electrical losses, charge patterns, and fuel consumption are measured and compared. Further, the 4WD architecture performance is validated with FWD and RWD architectures. From MATLAB/Simulink-based evaluation, 4WD HEV architectures have shown superior performance in most of the cases when compared to FWD type and RWD type HEVs. Moreover, 4WD parallel HEV architecture has shown superior performance compared to 4WD series, 4WD series-parallel, and 4WD complex architectures.

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Cremers, G. B. "Hybrid-powered wheelchair: a combination of arm force and electrical power for propelling a wheelchair." Journal of Medical Engineering & Technology 13, no. 1-2 (1989): 142–48. http://dx.doi.org/10.3109/03091908909030215.

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D??Acquisto, L. J., and J. E. Berry. "RELATIONSHIP BETWEEN ESTIMATED PROPELLING EFFICIENCY, PEAK AEROBIC POWER AND SWIMMING PERFORMANCE IN TRAINED MALE SWIMMERS." Medicine & Science in Sports & Exercise 35, Supplement 1 (2003): S36. http://dx.doi.org/10.1097/00005768-200305001-00193.

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Zamparo, Paola, and Ian L. Swaine. "Mechanical and propelling efficiency in swimming derived from exercise using a laboratory-based whole-body swimming ergometer." Journal of Applied Physiology 113, no. 4 (2012): 584–94. http://dx.doi.org/10.1152/japplphysiol.00324.2012.

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Determining the efficiency of a swimming stroke is difficult because different “efficiencies” can be computed based on the partitioning of mechanical power output (Ẇ) into its useful and nonuseful components, as well as because of the difficulties in measuring the forces that a swimmer can exert in water. In this paper, overall efficiency (ηO = ẆTOT/Ė, where ẆTOT is total mechanical power output, and Ė is overall metabolic power input) was calculated in 10 swimmers by means of a laboratory-based whole-body swimming ergometer, whereas propelling efficiency (ηP = ẆD/ẆTOT, where ẆD is the power to overcome drag) was estimated based on these values and on values of drag efficiency (ηD = ẆD/Ė): ηP = ηD/ηO. The values of ηD reported in the literature range from 0.03 to 0.09 (based on data for passive and active drag, respectively). ηO was 0.28 ± 0.01, and ηP was estimated to range from ∼0.10 (ηD = 0.03) to 0.35 (ηD = 0.09). Even if there are obvious limitations to exact simulation of the whole swimming stroke within the laboratory, these calculations suggest that the data reported in the literature for ηO are probably underestimated, because not all components of ẆTOT can be measured accurately in this environment. Similarly, our estimations of ηP suggest that the data reported in the literature are probably overestimated.

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Abiona, Oluwatosin, and Abdul-Quadri Oje. "A Review of the National Cybercrime Law and its Attendant Impact on National Security in Nigeria." International Journal for Research in Applied Science and Engineering Technology 11, no. 8 (2023): 1750–55. http://dx.doi.org/10.22214/ijraset.2023.55448.

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Abstract: This paper is a study on the issues in cybercrime, offences and penalties, and challenges that provoke cyber policy established in Nigeria. It seeks to define what cybersecurity and cybercrimes are from the perspective of the National cybercrime law. The focus of this study, however, is to highlight crimes or offences considered to have an impact on national security, the related issues, the effects of cybercrimes, challenges, and prospects. The study concludes that the leading causes propelling Nigerians to indulge in cybercrimes are disorientation and the rate of unemployment

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Acemoglu, Daron, Ufuk Akcigit, and William R. Kerr. "Innovation network." Proceedings of the National Academy of Sciences 113, no. 41 (2016): 11483–88. http://dx.doi.org/10.1073/pnas.1613559113.

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Technological progress builds upon itself, with the expansion of invention in one domain propelling future work in linked fields. Our analysis uses 1.8 million US patents and their citation properties to map the innovation network and its strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975–1994. The interaction of this preexisting network structure with patent growth in upstream technology fields has strong predictive power on future innovation after 1995. This pattern is consistent with the idea that when there is more past upstream innovation for a particular technology class to build on, then that technology class innovates more.

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Gupta, Priyanka, Gurulakshmi A.B, Ginni Nijhawan, Praveen, Lalit Kumar Tyagi, and Raghad Ahmed Hussien. "A review on Machine Learning Enhanced Predictive Maintenance for Electric Vehicle Power Electronics: A Pathway to Improved Reliability and Longevity." E3S Web of Conferences 505 (2024): 03017. http://dx.doi.org/10.1051/e3sconf/202450503017.

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The emergence of electric vehicles (EVs) as a mainstream mode of transportation presents new challenges in the realm of power electronics, particularly concerning reliability and longevity. Power electronics are the cornerstone of EV performance, dictating efficiency, durability, and overall vehicle health. Traditional maintenance strategies fall short in addressing the dynamic operational demands and complex failure mechanisms inherent in EV power systems. This paper introduces a machine learning (ML)-enhanced predictive maintenance framework designed to revolutionize the upkeep of EV power electronics. By harnessing advanced ML algorithms, the framework predicts potential system failures and degradation patterns, enabling preemptive maintenance actions. A robust data-driven approach is employed, utilizing operational data and failure modes to train the predictive models. The efficacy of the proposed method is demonstrated through extensive simulation and real-world EV power system analyses, showcasing significant improvements in fault identification accuracy and maintenance scheduling optimization. The result is a substantial extension of component lifespan and a reduction in unplanned downtimes, propelling EV power electronics towards higher reliability standards. This work not only contributes a novel predictive maintenance methodology but also paves the way for adaptive maintenance regimes, tailored to the unique demands of EV power electronics systems in the pursuit of sustainable and resilient transportation solutions.

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Feng, Shuai. "Toward a Transformed and Unequal World." China Quarterly of International Strategic Studies 05, no. 02 (2019): 267–87. http://dx.doi.org/10.1142/s2377740019500118.

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With the increasing use of machine learning algorithms in strategic decision-making and military affairs, the artificial intelligence (AI) revolution is bringing about significant changes to the current international system. AI applications will further tilt the global balance of power in favor of actors who can make the best use of the emerging technology. AI-assisted automation is also changing prevailing socioeconomic production models on the global scale; and in the not too distant future, it is expected to exert systemic impacts on the current global order. Having recognized the full potential of AI technology in propelling the next industrial revolution, China has adopted an AI development strategy for guiding a nation-wide campaign to harness AI power at an early stage, so as to seize the strategic initiative in an emerging global AI competition. China’s initial efforts have produced remarkable achievements with theoretical and practical implications.

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Rai, Dr Supriya. "An Analytical Study of the Growth of Loan Schemes in HDFC Bank." International Journal for Research in Applied Science and Engineering Technology 12, no. 2 (2024): 685–96. http://dx.doi.org/10.22214/ijraset.2024.58402.

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Abstract: This study conducts an in-depth analysis of the growth trajectory of loan schemes within HDFC Bank, a leading player in the banking industry. Through an exploration of the diverse loan products offered by the bank, their performance metrics, and the strategic drivers behind their expansion, this research aims to unveil the key factors contributing to the successful growth of HDFC Bank's loan portfolio. Utilizing a combination of quantitative data analysis, case studies, and expert insights, this study provides a comprehensive perspective on the strategies and elements propelling the sustained growth of loan schemes at HDFC Bank

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W., A. Akpan, Obot O.W., and Nyaudo I.I. "Risk Management in Nigeria Electric Power Industry." Engineering and Technology Journal 9, no. 01 (2024): 3333–42. https://doi.org/10.5281/zenodo.10527887.

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Most industrial and domestic electricity users are looking for electricity utility providers that meet their industrial and domestic performance needs and can be reliable. Due to maintenance and poor management /support systems, the Nigeria electric power industries are not able to meet the customers, requirements. Major causes of customers’ dissatisfaction are often traced back to unexpected failures leading to unexpected costs. However, with proper consideration of risk management in the maintenance policies, the number of failures can be reduced and their consequences minimized. Base on persistence power failures and the present deregulation threats in the Nigeria electric power industry, an approach for integrating risk management in the maintenance system is sort. The importance of FMECA failure management, measures and strategic management to facilitate easy risk management implementation in maintenance function is discussed. An approach is suggested for use of reliability tools, LCC and Pareto simulation waste process management, coordination and control to reduce risk. This paper establishes the importance of a well planned requirement specification and the need to analyze and interpret risk analysis results, for maintenance management.

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Babayomi, O., and A. Balogun. "Internal Model Loss Minimization Control of Permanent Magnet Synchronous Machine." Nigerian Journal of Technology 40, no. 1 (2021): 97–108. http://dx.doi.org/10.4314/njt.v40i1.14.

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Electric drives are very useful in propelling the wheels of hybrid electric vehicles (HEVs). They also play a central function in the electric power steering (EPS). This paper describes studies carried out on the efficiency optimization of an interior permanent magnet synchronous machine (IPMSM) for application in the EPS. An analytic loss- minimization algorithm for an IPMSM was derived and the optimization problem took into consideration copper, iron and stray losses. The proposed loss minimization algorithm is simple and cost effective to implement. From the simulations carried out, significant efficiency gains are possible with this model. The internal model control (IMC) method was employed to achieve current and speed control with acceptable sensitivity to machine parameters.

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Simard, Clermont, Luc Noreau, Gilles Paré, and Pierre Pomerleau. "Réponses physiologiques maximales lors d'un effort chez des sujets quadriplégiques." Canadian Journal of Applied Physiology 18, no. 2 (1993): 163–74. http://dx.doi.org/10.1139/h93-013.

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Devices used for the assessment of physical working capacity in quadriplegics may be determinant in terms of efficiency during maximal exercise testing. The aim of this study was to compare the physiological responses of a group of quadriplegics during graded exercise tests on arm cranking ergometer (ACE) and wheelchair ergometer (WE). Fifty subjects, age 34.1 (± 9.5) years, participated in the study. Measurements comprised heart rate, ventilation, oxygen consumption, and power output. Unlike other studies suggesting a higher physical working capacity on ACE compared with WE, no significant differences were observed in physiological measurements between the two ergometers. However, power output on ACE was 65% higher than that of WE (p ≤ 0.001). These results suggest that power output of quadriplegics on ACE is higher due to differences in mechanical patterns required to induce movements of propelling (arm cranking vs. rolling movements). The need to link the assessment results to the type of locomotion used by the spinal cord injured persons may suggest the use of WE for testing and training in such individuals. Key words: quadriplegic, spinal cord injury, arm cranking and wheelchair ergometers, exercise testing, mechanical efficiency, physically disabled

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Hensh, Sujit, and Hifjur Raheman. "Measurement of Propelling Power and Clutch Actuating Force of a Self-Propelled Electric Paddy Seeder in Wetland." Journal of The Institution of Engineers (India): Series A 103, no. 1 (2021): 203–13. http://dx.doi.org/10.1007/s40030-021-00587-0.

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Rodríguez-Pose, Andrés. "The centrifugal state: In search of an explanation of why countries decentralise." Quaestiones Geographicae 43, no. 4 (2024): 35–48. https://doi.org/10.14746/quageo-2024-0041.

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Nation-states across the world are increasingly relinquishing powers to subnational tiers of government. This paper examines the drivers of this decentralisation revolution and the forces propelling it. While conventional wisdom has long attributed this phenomenon to the triumvirate of democracy, economic efficiency, and regional identity, the contemporary dynamics presented in this paper demand a far more nuanced interpretation. Through the dual lenses of the efficiency-based decentralisation theorem and political economy analysis, I discuss how globalisation, technological upheaval, and innovations in governance have fundamentally reshaped the relationship between political centres and periphery within countries. The empirical evidence reveals decentralisation not as a linear progression but as an intricate interweaving of economic imperatives and political will. This complexity defies simple causation, suggesting instead that the dispersal of power responds to an elaborate choreography of classical and modern forces. The paper dwells on the subtle mechanics of governmental reorganisation, offering insights into the evolving architecture of multi-level governance while acknowledging the inherent challenges in isolating singular causes for these transformative trends.

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Nimmagadda, Chaitanya, Veeranjaneyulu Gopu, Palle Deepak Reddy, et al. "Leveraging renewable energy sources for sustainable traction vehicles." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 1 (2024): 40. http://dx.doi.org/10.11591/ijeecs.v34.i1.pp40-49.

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In pursuit of sustainable transportation, green energy sources (GES) are taking center stage, propelling traction vehicles like tramways and trolleybuses towards a zero-emission future. Solar is the most prominent source among the available renewable sources and also for the transport system applications. To utilize photovoltaic (PV) source effectively, model predictive controller-based PV maximum power tracking algorithm is used to identify the PV parameters. Equipped with the smart energy storage system (SESS), light traction vehicles rely on the efficiency and reliability of brushless DC (BLDC) motors for smooth operation. However, BLDC motors operate at high voltages, which requires them to be connected to high voltage microgrids. Bridging the gap between ESS/SESS and the high-voltage microgrid with traditional DC-DC boost converters incurs efficiency losses and component stress. This paper tackles high-voltage needs in microgrids through innovative, efficient DC-DC boost converter designs. An innovative finite-control-set based model-predictive control (FCS MPC) controller tackles clean energy harnessing from PV and grid stability in traction applications, enabling optimized power sharing within microgrid constraints.

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Nimmagadda, Chaitanya, Veeranjaneyulu Gopu, Palle Deepak Reddy, et al. "Leveraging renewable energy sources for sustainable traction vehicles." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 1 (2024): 40–49. https://doi.org/10.11591/ijeecs.v34.i1.pp40-49.

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In pursuit of sustainable transportation, green energy sources (GES) are taking center stage, propelling traction vehicles like tramways and trolleybuses towards a zero-emission future. Solar is the most prominent source among the available renewable sources and also for the transport system applications. To utilize photovoltaic (PV) source effectively, model predictive controller-based PV maximum power tracking algorithm is used to identify the PV parameters. Equipped with the smart energy storage system (SESS), light traction vehicles rely on the efficiency and reliability of brushless DC (BLDC) motors for smooth operation. However, BLDC motors operate at high voltages, which requires them to be connected to high voltage microgrids. Bridging the gap between ESS/SESS and the high-voltage microgrid with traditional DC-DC boost converters incurs efficiency losses and component stress. This paper tackles high-voltage needs in microgrids through innovative, efficient DC-DC boost converter designs. An innovative finite-control-set based model-predictive control (FCS MPC) controller tackles clean energy harnessing from PV and grid stability in traction applications, enabling optimized power sharing within microgrid constraints.

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Saranya, R., B. Paulchamy, K. Kalpana, V. V. Teresa, and P. Logamurthy. "Area-Delay-Power-Efficient GDI Architecture Select Adder to Carry." E3S Web of Conferences 616 (2025): 02005. https://doi.org/10.1051/e3sconf/202561602005.

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The signal processing system is extremely popular in this day and age. All of the primary circuits in the digital signal processing system are built around the adder, which is the fundamental building block. Today’s needs for lowering the delay, space, and power consumption of adder circuits boost the overall efficiency of the system, propelling it to the next stage of technological development. Despite the fact that the Carry Select Adder (CSLA) takes up more space, it is being utilised in place of the ripple carry adder in order to reduce propagation delays. In other models, a Carry Select Adder based on a Binary to Excess-I Converter (BEC) was utilised, which required fewer logic resources than a standard CSLA and was hence more energy efficient. The fact that these CSLAs reject one sum after the calculation, however, means that they are not more efficient. As a result, the delay was not significantly decreased. It is necessary to apply the reduced logic CSLA in order to overcome this challenge. However, by employing the Gate Diffusion Input (GDI) Technique, it is possible to achieve a lower delay than the previously suggested reduced logic CSLA. The suggested technique consumes less power and has a shorter propagation latency than existing techniques. In addition, the number of transistors necessary for the circuit was reduced by implementing this GDI-based CSLA. It is possible to create an efficient adder using this technique, as seen above.

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Ribeiro, João, Argyris G. Toubekis, Pedro Figueiredo, et al. "Biophysical Determinants of Front-Crawl Swimming at Moderate and Severe Intensities." International Journal of Sports Physiology and Performance 12, no. 2 (2017): 241–46. http://dx.doi.org/10.1123/ijspp.2015-0766.

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Purpose:To conduct a biophysical analysis of the factors associated with front-crawl performance at moderate and severe swimming intensities, represented by anaerobic-threshold (vAnT) and maximal-oxygen-uptake (vV̇O2max) velocities.Methods:Ten high-level swimmers performed 2 intermittent incremental tests of 7 × 200 and 12 × 25 m (through a system of underwater push-off pads) to assess vAnT, and vV̇O2max, and power output. The 1st protocol was videotaped (3D reconstruction) for kinematic analysis to assess stroke frequency (SF), stroke length (SL), propelling efficiency (ηP), and index of coordination (IdC). V̇O2 was measured and capillary blood samples (lactate concentrations) were collected, enabling computation of metabolic power. The 2nd protocol allowed calculating mechanical power and performance efficiency from the ratio of mechanical to metabolic power.Results:Neither vAnT nor vV̇O2max was explained by SF (0.56 ± 0.06 vs 0.68 ± 0.06 Hz), SL (2.29 ± 0.21 vs 2.06 ± 0.20 m), ηP (0.38 ± 0.02 vs 0.36± 0.03), IdC (–12.14 ± 5.24 vs –9.61 ± 5.49), or metabolic-power (1063.00 ± 122.90 vs 1338.18 ± 127.40 W) variability. vV̇O2max was explained by power to overcome drag (r = .77, P ≤ .05) and ηP (r = .72, P ≤ .05), in contrast with the nonassociation between these parameters and vAnT; both velocities were well related (r = .62, P ≤ .05).Conclusions:The biomechanical parameters, coordination, and metabolic power seemed not to be performance discriminative at either intensity. However, the increase in power to overcome drag, for the less metabolic input, should be the focus of any intervention that aims to improve performance at severe swimming intensity. This is also true for moderate intensities, as vAnT and vV˙O2max are proportional to each other.

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Ahmad, Awais, M. Mazhar Rathore, Anand Paul, Won-Hwa Hong, and HyunCheol Seo. "Context-Aware Mobile Sensors for Sensing Discrete Events in Smart Environment." Journal of Sensors 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/7283831.

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Over the last few decades, several advancements in the field of smart environment gained importance, so the experts can analyze ideas for smart building based on embedded systems to minimize the expense and energy conservation. Therefore, propelling the concept of smart home toward smart building, several challenges of power, communication, and sensors’ connectivity can be seen. Such challenges distort the interconnectivity between different technologies, such as Bluetooth and ZigBee, making it possible to provide the continuous connectivity among different objects such as sensors, actuators, home appliances, and cell phones. Therefore, this paper presents the concept of smart building based on embedded systems that enhance low power mobile sensors for sensing discrete events in embedded systems. The proposed scheme comprises system architecture that welcomes all the mobile sensors to communicate with each other using a single platform service. The proposed system enhances the concept of smart building in three stages (i.e., visualization, data analysis, and application). For low power mobile sensors, we propose a communication model, which provides a common medium for communication. Finally, the results show that the proposed system architecture efficiently processes, analyzes, and integrates different datasets efficiently and triggers actions to provide safety measurements for the elderly, patients, and others.

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Basu, Kaushik. "The Enigma of India's Arrival: A Review of Arvind Virmani's Propelling India: From Socialist Stagnation to Global Power." Journal of Economic Literature 46, no. 2 (2008): 396–406. http://dx.doi.org/10.1257/jel.46.2.396.

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India's high growth over the last fifteen years has inspired several recent books and papers to examine the growth's source and sustainability—the two-volume study by Arvind Virmani being a case in point. This paper evaluates these recent works. It is argued that the cause of the take-off does not fit into any easy ideological category as suggested by Virmani. The current high growth has been achieved in several steps, with distinct factors of propulsion behind each step. There is reason to expect the growth to be sustainable, although destabilizing political tensions will arise from the increasing inequality. The paper also evaluates how India's growth relates to the global economy.

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Xia, Bin, Shigeo Tanaka, Takeshi Nakazawa, and Hideaki Sugita. "C303 RESEARCH ON THE APPLICATION OF THE COMBINED CYCLE USED IN THE POWER PLANT FOR SHIP PROPELLING SYSTEMS." Proceedings of the International Conference on Power Engineering (ICOPE) 2003.3 (2003): _3–159_—_3–162_. http://dx.doi.org/10.1299/jsmeicope.2003.3._3-159_.

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NINOMIYA, Keiichi, Akira KAKIMOTO, Shigenobu SUZUKI, and Yukio SEKIGUCHI. "704 Study on Development of Power Assisted Attendant-Propelled Wheelchair : Prototype of Two-Component Propelling-Force Sensing Mechanism." Proceedings of Ibaraki District Conference 2001 (2001): 173–74. http://dx.doi.org/10.1299/jsmeibaraki.2001.173.

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Fan, Daoqing, Juan Wang, Erkang Wang, and Shaojun Dong. "Propelling DNA Computing with Materials’ Power: Recent Advancements in Innovative DNA Logic Computing Systems and Smart Bio‐Applications." Advanced Science 7, no. 24 (2020): 2001766. http://dx.doi.org/10.1002/advs.202001766.

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Lyajoon, Stephen. "BL Drama: The Thai Entertainment Industry as a Source of Soft Power." English Language, Literature & Culture 9, no. 3 (2024): 72–76. http://dx.doi.org/10.11648/j.ellc.20240903.13.

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Boys Love, a subcategory originated in Japan in the 1970’s has swept the Thai entertainment industry. BL dramas has put Thailand on the map with an international recognition and appreciation through the portrayal of the country’s gender fluidity narrative and addressing relatable social question of the current generation. Observations can be made on the possibility of Thailand to use this newly found niche market as a source of soft power. Looking at the country’s other Asian neighbors as case study allows for a clear pattern to be observed through the use of the entertainment industry as a mean for cultural export, simultaneously establishing a sphere of influence that can be leverage on the diplomatic stage. This paper leverage the case study of South Korea and Japan as prime example of soft power through their respective entertainment industry. From the origin of the Boys Love and its success in Thailand to analysis of similar case studies in Japan and South Korea, this paper seeks to understand the feasibility of the BL genre becoming an asset positioning Thailand as a key player in the diplomatic arena both within Asia and the international community. The BL industry in Thailand has a significant potential of propelling the country on the international stage as a significant regional power. Yet, there are some major setbacks to be addressed for that concretization of this phenomenon.

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Li, Yang, and Xiaohong Jiao. "Energy management strategy for hybrid electric vehicles based on adaptive equivalent consumption minimization strategy and mode switching with variable thresholds." Science Progress 103, no. 1 (2019): 003685041987499. http://dx.doi.org/10.1177/0036850419874992.

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To improve the real-time capability, adaptivity, and efficiency of the energy management strategy in the actual driving cycle, a real-time energy management strategy is investigated for commute hybrid electric vehicles, which integrates mode switching with variable threshold and adaptive equivalent consumption minimization strategy. The proposed strategy includes offline and online parts. In the offline part based on the historical traffic data on the route of the commute vehicle, particle swarm optimization is applied to optimize all the thresholds of mode switching, equivalence factor of the equivalent consumption minimization strategy, and the engine torque and speed at the engine-alone propelling mode so as to establish their mappings on the battery state of charge and power demand. In the online part, the established mappings are involved in the energy management supervisor to generate timely appropriate mode switching signals, and an adaptive equivalence factor for instantaneous optimization equivalent consumption minimization strategy and the optimal engine torque and speed at engine-alone propelling mode. To fully demonstrate the effectiveness of the proposed strategy, the simulation results and comparison with some other strategies and the benchmark dynamic programming strategy are presented by implementing the strategies on the GT-SUITE test platform. The comparison result indicates that the control effect of the proposed energy management strategy is much nearer to that of the benchmark dynamic programming than those of other strategies (the rule-based control, the conventional equivalent consumption minimization strategy, the adaptive equivalent consumption minimization strategy, the rule-based-equivalent consumption minimization strategy, and the stochastic dynamic programming strategy) with the respective improvement in fuel efficiency by 25.9%, 13.25%, 4.6%, 1.32%, and 1.13%.

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Dewantoro, Pamungkas Ade, Amad Narto, and Riyadini Utari. "Analysis Of Not Rotating Valve Rotator On Main Engine Performance In KM. LABOBAR." Jurnal Sains Teknologi Transportasi Maritim 6, no. 2 (2024): 85–90. https://doi.org/10.51578/j.sitektransmar.v6i2.92.

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The main engine serves as the primary power source for propelling the ship forward and backward. This engine operates on an internal combustion system, where fuel and air are compressed in the combustion chamber to generate thermal energy, which is then converted into mechanical energy through piston movement. This study employs a qualitative descriptive method with SHEL data analysis techniques, identifying the causative factors, impacts, and corrective measures associated with the non-rotation of the valve rotator in the main engine. The findings indicate that the primary cause of the valve rotator's non-rotation is improper installation of the valve collet and wear on the valve rotator body, which affects valve performance and reduces the overall efficiency of the main engine. Corrective actions include replacing the valve rotator and performing routine lubrication checks to prevent further damage.

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De Abreu, Victor Hugo Souza, Rafael Ferraz dos Santos, Andrea Souza Santos, and Sandra Oda. "THE ROLE OF RENEWABLE HYDROGEN IN ACHIEVING SUSTAINABLE URBAN TRANSPORTATION." MIX Sustentável 10, no. 3 (2024): 163–73. http://dx.doi.org/10.29183/2447-3073.mix2024.v10.n3.163-173.

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The increasing global demand for a more sustainable economy is propelling the exploration of alternatives to conventional practices. The adoption of a hydrogen production and distribution system is gaining global consensus, driven by its lower environmental impact compared to fossil fuels. This study delves into the feasibility of renewable hydrogen, sourced from avenues like solar and wind power, particularly in the realm of sustainable urban transportation. The urgency for innovative technologies, underscored by emissions targets and sustainable development goals, positions hydrogen as a promising solution with superior calorific value and reduced emissions. Nonetheless, formidable challenges, including limited infrastructure and the requirement for substantial investment, pose significant hurdles to its widespread adoption. The pertinence of this study is further emphasized by the necessity to continually update the literature, ensuring alignment with the dynamic developments in this field.

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Benford, Gregory. "Links Between Jet Instabilities, Radiation and Propagation in Astrophysics." Symposium - International Astronomical Union 107 (1985): 131–38. http://dx.doi.org/10.1017/s0074180900075562.

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At the head of a jet the confining medium of plasma frequency νp is compressed, so that streaming instabilities between relativistic electrons and this plasma produce waves at νp′ > νp. Considerable power can be lodged in these electrostatic waves, and conversion to electromagnetic waves allows them to propagate far beyond the jet. Emission at ν ≈ νp′ or Compton boosted radiation at ν ≲ γ2 νp′ yields a cone of radiation of angle ~ 1/γ, which illuminates the region directly in front of the jet. This emission is not absorbed by the surrounding plasma unless a cloud blocks the jet. Absorption in a cloud can lead to tunneling through large clouds, or propelling of smaller clouds out of the jet path. In this fashion jets may clear their way through an inhomogeneous medium, avoiding lateral disturbances and preheating their path.

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Journal articles on the topic 'Propelling power'

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