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Relevant bibliographies by topics / Booster transformer

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Academic literature on the topic 'Booster transformer'

Author: Grafiati

Published: 28 May 2022

Last updated: 22 June 2025

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Journal articles on the topic "Booster transformer"

1

Yao, Changqing. "Research on the application of balanced windings in wind farm booster stations." Journal of Physics: Conference Series 2797, no. 1 (2024): 012008. http://dx.doi.org/10.1088/1742-6596/2797/1/012008.

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Abstract The 35 kV booster station system is an undisputed main grid in wind farms, and its main transformer wiring and grounding methods directly affect the stable operation of the entire wind farm station. After explaining the important role of balanced windings in transformers, this article uses Matlab/Simulink to build a mathematical model of wind farm stations from the aspects of wind turbines, transmission lines, step-up transformers, grounding transformers, main power grids, loads, etc. From the perspectives of harmonic suppression ability and wind farm operation stability, the applicability of a three-winding transformer with balanced windings as the main transformer of wind farm step-up stations is analyzed in depth. The results show that using a three-winding transformer as the main transformer for the wind farm boosting station has a significant effect on harmonic suppression and can ensure stable operation of the wind farm.

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Xiao, Xiao, Wenliang Guo, Rui Chen, Yilong Hui, Jianing Wang, and Hongyu Zhao. "A Swin Transformer-Based Encoding Booster Integrated in U-Shaped Network for Building Extraction." Remote Sensing 14, no. 11 (2022): 2611. http://dx.doi.org/10.3390/rs14112611.

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Building extraction is a popular topic in remote sensing image processing. Efficient building extraction algorithms can identify and segment building areas to provide informative data for downstream tasks. Currently, building extraction is mainly achieved by deep convolutional neural networks (CNNs) based on the U-shaped encoder–decoder architecture. However, the local perceptive field of the convolutional operation poses a challenge for CNNs to fully capture the semantic information of large buildings, especially in high-resolution remote sensing images. Considering the recent success of the Transformer in computer vision tasks, in this paper, first we propose a shifted-window (swin) Transformer-based encoding booster. The proposed encoding booster includes a swin Transformer pyramid containing patch merging layers for down-sampling, which enables our encoding booster to extract semantics from multi-level features at different scales. Most importantly, the receptive field is significantly expanded by the global self-attention mechanism of the swin Transformer, allowing the encoding booster to capture the large-scale semantic information effectively and transcend the limitations of CNNs. Furthermore, we integrate the encoding booster in a specially designed U-shaped network through a novel manner, named the Swin Transformer-based Encoding Booster- U-shaped Network (STEB-UNet), to achieve the feature-level fusion of local and large-scale semantics. Remarkably, compared with other Transformer-included networks, the computational complexity and memory requirement of the STEB-UNet are significantly reduced due to the swin design, making the network training much easier. Experimental results show that the STEB-UNet can effectively discriminate and extract buildings of different scales and demonstrate higher accuracy than the state-of-the-art networks on public datasets.

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Usmanov, E. G. "Regulation system by voltage booster transformer." E3S Web of Conferences 384 (2023): 01034. http://dx.doi.org/10.1051/e3sconf/202338401034.

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In this article, the features of the oscillatory circuit are investigated in order to determine the possibility of their application for controlling thrusters when building new, simple and reliable circuits for regulating booster voltage stabilizers from the value of the supply voltage. In Ferro resonant circuits connected to a voltage source with low internal resistance, with a certain combination of parameters, oscillations are excited at the fundamental frequency, the initial phase of which has a shift relative to the initial phase of the applied voltage.

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4

Zhang, Fuqiang, Zerong Yang, Ting Li, Yue Jia, Dan Zhou, and Luyao Xie. "Research on the early warning method of transformer fire fault in ocean booster station based on fault tree model." E3S Web of Conferences 252 (2021): 02044. http://dx.doi.org/10.1051/e3sconf/202125202044.

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As the heart of the sea booster station, the transformer has an extremely important position. When the transformer has various faults, it is very easy to cause a fire accident, so the safe operation of the transformer is very important. First, use the fault tree analysis method to construct a transformer fire fault tree evaluation model for different types of fire fault events during the operation of the transformer, then through the calculation of the fire failure probability, the number of measuring points of the composite fire detector is obtained and the measuring points are reasonably arranged to detect the operation status of the transformer in real time. Therefore, it is of great significance to ensure the safe and reliable operation of offshore booster station by improving the accuracy of transformer fire warning.

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Karimov, Raxmatillo. "Improving the quality of 0.4 kV electricity in household appliances due to voltage regulation." E3S Web of Conferences 384 (2023): 01056. http://dx.doi.org/10.1051/e3sconf/202338401056.

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The article discusses a way to improve the quality of electricity up to 0.4 kV household appliances through voltage regulation. As an actuator, a booster transformer with two secondary windings connected in accordance with the primary winding is used. High-speed non-contact voltage relays are used as a device that is sensitive to changes in the input voltage, as well as a device that switches the secondary windings of a booster transformer.

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6

Chia, Travis Ren Teen, Barnaby Edward Young, and Po Ying Chia. "The Omicron-transformer: Rise of the subvariants in the age of vaccines." Annals of the Academy of Medicine, Singapore 51, no. 11 (2022): 712–29. http://dx.doi.org/10.47102/annals-acadmedsg.2022294.

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Introduction: Omicron is the latest SARS-CoV-2 variant of concern, the pathogen that causes COVID-19. Since its emergence in late 2021, Omicron has displaced other circulating variants and caused successive waves of infection worldwide throughout 2022. Omicron is characterised by the rapid emergence of many subvariants and high rates of infection in people with vaccine- and/or infection-induced immunity. This review article will consolidate current knowledge regarding Omicron subvariants, the role of boosters, and future vaccine development. Method: This narrative review is based on a literature search using PubMed. Search terms related to Omicron were used and priority was given to published peer-reviewed articles over pre-prints. Results: Studies indicate that vaccinations and boosters are important to reduce disease severity, hospitalisation and death from Omicron. A variety of factors, such as differing host factors, circulating variants, and forces of infection, can influence the benefit of repeated booster administration. Next-generation bivalent vaccines have now been approved in some countries including Singapore and have demonstrated the ability to induce broad variant protection. Future third-generation vaccines involving mucosal vaccines and/or pan-sarbecovirus vaccines may provide broader and longer-lasting protection. Conclusion: Due to current high levels of vaccine- and infection-induced immunity, it is likely that rates of severe illness, hospitalisation, and death due to Omicron will continue to moderate. Nevertheless, the virus is ever-changing, and public health policies, especially those related to vaccinations, will also have to continually evolve and adapt as COVID-19 transitions to endemicity. Keywords: Booster, COVID-19, infectious diseases, Omicron, vaccine

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Komyakov, Aleksandr, and Viktor Tarasevich. "Experimental determination of external characteristics of AC traction substations for selection of parameters of active devices of traction power supply system." Bulletin of scientific research results 2024, no. 2 (2024): 5–17. http://dx.doi.org/10.20295/2223-9987-2024-02-5-17.

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Objective: to develop a method of experimental determination of external characteristics of alternating current traction substations for selection of parameters of active devices of traction power supply system. Methods: finding of equivalent currents of phases of a step-down transformer using the theory of linear electric circuits; statistical methods, including: construction and approximation of external characteristics of regression analysis methods, construction of theoretical and experimental law of distribution of equivalent current of traction load and determination of current quantile for a given confidence probability. Results: advantages and disadvantages of methods of simulation modeling of traction power supply system as applied to determination of parameters of active devices are shown, possibilities of experimental method are given. A detailed description of the conducted experiment is given, connection schemes of measuring devices and vector diagrams of currents and voltages are shown. The main stages of the proposed methodology for selecting the parameters of the booster transformer are outlined. Calculation formulas for determining the equivalent phase currents are presented, the external characteristic for the selected traction substation is constructed. The theoretical and experimental distribution law of the equivalent current of the traction load was constructed and the quantiles of the equivalent current were determined, which amounted to 400 A at a confidence level of 0.968. The maximum required value of volt additive for the selected traction substation and the law of volt additive voltage control for the booster transformer were determined. Practical importance: the proposed methodology of selecting the parameters of active devices of traction power supply system based on the experimental determination of external characteristics of traction substations will allow to determine more accurately the energy performance of booster transformers. It is supposed to improve the methodology by processing the results of synchronous measurements of currents and voltages at neighboring traction substations feeding the inter-substation zone. This will make it possible to expand the possibilities of application of active devices of the traction power supply system and improve the algorithms of booster transformer operation, including taking into account the operation of controlled reactive power compensation devices.

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Usmanov, E. G., A. N. Rasulov, M. K. Bobojanov, and R. Ch Karimov. "Non-contact voltage relay for switching windings of a boost transformer." E3S Web of Conferences 139 (2019): 01079. http://dx.doi.org/10.1051/e3sconf/201913901079.

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In power supply systems the change in the magnitude of the voltage degrades the operation of electrical appliances right up to their failure. The proposed scheme of a contactless voltage relay based on a contactless voltage relay with switching the windings of a booster step-up transformer with a time delay allows switching the windings of a magnetizing booster transformer with a voltage change at the consumer terminals. Analytical studies of a non-autonomous non-linear dynamic circuit, which is the basis of the proposed device based on the classical method of solving a differential equation, which determines the nature of the voltage change for controlling thruster switches. The change of energy parameters of the proposed stabilizer depending on the voltage is given. The article considers the principle of operation of the proposed scheme of a contactless switching device based on a contactless voltage relay that switches the windings of a booster step-up transformer. An analytical study of a non-autonomous nonlinear dynamic circuit, which is the basis of the proposed device and the characteristics uc = f t required for switching the thruster is presented.

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Zaitsev, D., I. Golub, M. Tirsu, and D. Caloshin. "Regulation Transformer with Extended Control Range." Problems of the Regional Energetics, no. 3(63) (July 2024): 146–54. http://dx.doi.org/10.52254/1857-0070.2024.3-63.12.

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The paper deals with research of the booster transformer (regulation transformer), which can be attributed to “Sen” family, which has an extended range and higher control accuracy. The main aim of the paper is to study both operational and energy characteristics of the transformer device that implements output voltage longitudinal-transverse regulation principle relative to the input based on power electronics. The most significant research results can be considered new developed circuit design and method for windings sectioning, including their regulating control strategy. The obtained computational experiments results based on developed structural simulation models of the booster transformer demonstrated effectiveness of the proposed device technical solution and its control strategy in terms of significant expansion of the output voltage range both in magnitude and in phase. It is shown that the proposed technical solution provides greater possibilities for phase voltage regulation (relative to the UPFC and “Sen” transformer) with the same restrictions on the longitudinal and transverse components of the boost voltage. Vector diagrams of the studded device were constructed and expressions characterizing its operating parameters were obtained. The characteristics of the device parameters variation in both idle and load mode were obtained and analyzed. The significance of the obtained results consisting in fact, that the proposed technical solution is capable to provide the same control actions in the form of an adjustable additional voltage as FACTS controllers such as UPFC and “Sen” - transformer, but on a simpler basis that is more accessible to practical implementation.

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Govorov, F.P., V.F. Govorov, and T.I. Romanova. "The Control of Fluxes of Electric Power in Networks by Means of Phase-switching Booster Transformers." Problemele Energeticii Regionale 3(32) (December 15, 2016): 40–45. https://doi.org/10.5281/zenodo.1207886.

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Problems of increasing the efficiency of the operation of electrical networks based on the utilization of booster transformers (BT) with electronic control, applied on the base of active elements in smart electric grids of power systems and giving the function of automatic correction of the parameters of the network, assuring the conditions of optimal common operation are studied in the paper. The mathematic model of the processes in the electric networks with booster transformer has been developed; the opportunity of control by means of the phase-switching BT for power fluxes in the networks has been established. It has been shown that for the groups of switching the windings 1-5 of BT occurs additional consumption of power from the supply network, but for the groups 7-11 its recuperation to the load network. Respectively, switching the windings of BT to the group 1-5 assures the shift of load current to the direction of lag, but in the case of switching to the group 7-11 – towards the outrunning. Wherein, for the groups of switching 10-11 and 1-2 one can observe the increasing of the voltage at the output of BT, but for the groups 7-8 and 4-5 it is decreasing. Based on the analysis of the results of research the diagram and constructive models of the transformer have been proposed. The quasi-stationary and transient regimes were investigated and the conditions of reliable operation at these the regimes have been determined. The ways for increasing the efficient common operation for the transformer and network in the case of switching the thyristors into the circuit of the primary winding of the transformer have been proposed.

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Dissertations / Theses on the topic "Booster transformer"

1

Федотов, А. И., та А. Р. Ахметшин. "Устроение отклонения и несимметрию напряжения в распределительных сетях 0,4-10 кВ с помощью вольтодобавочных трансформаторов". Thesis, Издательство СумГУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27714.

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2

Korejčík, Michal. "Návrh transformátoru s regulací fáze pro laboratorní výuku." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219412.

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This thesis deals with a power flow control in the electric power system. An overview of FACTS devices is introduced; their basic characteristics as well as examples of their application are discussed. A significant part of this thesis investigates phase shifting transformers (PST´s), which seem to be suitable for implementation in the transmission system of the Czech Republic. The PST´s are useful devices that control active power flows on cross-border lines and regulate unwanted and unexpected power flows. Basic types and characteristics of the PST´s are discussed. In chapter 7 is designed laboratory task that should validate the regulatory capabilities of the transformer PST. Designs of models of individual parts of this laboratory task are presented. In the last part of this thesis the regulation effect of the PST is validated in the GLF/AES program.

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Calderon-Lopez, Gerardo. "Design and control of the dual-interleaved boost converter with interphase transformer." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494665.

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This Thesis examines the operation and dynamic characteristics of the dual-interleaved boost converter with interphase transformer. Due to its inherent high efficiency and potential for miniaturisation, the circuit is of particular interest for the emerging applications in electric vehicle power trains, for example to interface a low voltage fuel cell or battery to a high voltage traction system. The steady-state analysis of the converter focuses on understanding the shapes of the interphase transformer currents and identifying the boundary condition for continuous conduction of the transformer windings. The analysis Is also seen to be applicable to a modified version of the converter in which the freewheel diodes are replaced by a second pair of transistors, enabling zero voltage switching by appropriate choice of the interphase transformer inductance. The analysis predicts approximately the boundary of zero voltage switching operation.

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4

LI, QUAN, and q. li@cqu edu au. "HIGH FREQUENCY TRANSFORMER LINKED CONVERTERS FOR PHOTOVOLTAIC APPLICATIONS." Central Queensland University. N/A, 2006. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20060830.110106.

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This thesis examines converter topologies suitable for Module Integrated Converters (MICs) in grid interactive photovoltaic (PV) systems, and makes a contribution to the development of the MIC topologies based on the two-inductor boost converter, which has received less research interest than other well known converters. The thesis provides a detailed analysis of the resonant two-inductor boost converter in the MIC implementations with intermediate constant DC links. Under variable frequency control, this converter is able to operate with a variable DC gain while maintaining the resonant condition. A similar study is also provided for the resonant two-inductor boost converter with the voltage clamp, which aims to increase the output voltage range while reducing the switch voltage stress. An operating point with minimized power loss can be also established under the fixed load condition. Both the hard-switched and the soft-switched current fed two-inductor boost converters are developed for the MIC implementations with unfolding stages. Nondissipative snubbers and a resonant transition gate drive circuit are respectively employed in the two converters to minimize the power loss. The simulation study of a frequency-changer-based two-inductor boost converter is also provided. This converter features a small non-polarised capacitor in a second phase output to provide the power balance in single phase inverter applications. Four magnetic integration solutions for the two-inductor boost converter have also been presented and they are promising in reducing the converter size and power loss.

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5

Villarruel-Parra, Alejandro. "Digital average-current control for the dual interleaved boost converter." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/digital-averagecurrent-control-for-the-dual-interleaved-boost-converter(5e08a493-7f23-4898-b391-d0d27bb09730).html.

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This Thesis addressed the challenge of ensuring balanced currents in the phases of a multi-kW, interleaved dc-dc converter by means of closed-loop digital control. The Thesis examines uniformly-sampled, valley-current, peak-current and average-current control for a dual interleaved boost converter with inter-phase transformer which might form part of the power train of an electric vehicle. Also, an enhancement of the average-current control is investigated in which the transistor duty-ratio is updated more rapidly, which allows an improvement of approximately ten times in the response speed of the system. Based on the theoretical analysis, the average-current control methodology was determined to be the most suitable technique for this type of converter as it ensures well-balanced phase currents over a wide range. To provide a basis for control system analysis and design for interleaved converters, a modelling methodology is developed based on a combination of multi-rate data-sampled theory and a small-signal averaged converter model. The model is shown to represent accurately the interaction between the interleaved phases, revealing a reduced stability range compared with a non-interleaved converter. The modelling and control methods are validated using switched and average value simulations obtained with the SABER software and by experimental results from a 25 kW, 30 kHz converter prototype. The control techniques were implemented on a Texas Instruments TMS320F28335 digital signal controller.

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6

Wang, Jinhua. "A Wide Input Power Line Energy Harvesting Circuit For Wireless Sensor Nodes." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103426.

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Massive deployment of wireless IoT (Internet of Things) devices makes replacement or recharge of batteries expensive and impractical for some applications. Energy harvesting is a promising solution, and various designs are proposed to harvest power from ambient resources including thermal, vibrational, solar, wind, and RF sources. Among these ambient resources, AC powerlines are a stable energy source in an urban environment. Many researchers investigated methods to exploit this stable source of energy to power wireless IoT devices. The proposed circuit aims to harvest energy from AC powerlines with a wide input range of from 10 to 50 A. The proposed system includes a wake-up circuit and is capable of cold-start. A buck-boost converter operating in DCM is adopted for impedance matching, where the impedance is rather independent of the operation conditions. So, the proposed system can be applied to various types of wireless sensor nodes with different internal impedances. Experimental results show that the proposed system achieves an efficiency of 80.99% under the powerline current of 50 A.<br>M.S.<br>Nowadays, with the magnificent growth of IoT devices, a reliable, and efficient energy supply system becomes more and more important, because, for some applications, battery replacement is very expensive and sometimes even impossible. At this time, a well-designed self-contained energy harvesting system is a good solution. The energy harvesting system can extend the service life of the IoT devices and reduce the frequency of charging or checking the device. In this work, the proposed circuit aims to harvest energy from the AC power lines, and the harvested power intends to power wireless sensor nodes (WSNs). By utilizing the efficient and self-contained EH system, WSNs can be used to monitor the temperature, pressure, noise level and humidity etc. The proposed energy harvesting circuit was implemented with discrete components on a printed circuit board (PCB). Under a power line current of 50 A @ 50 Hz, the proposed energy harvesting circuit can harvest 156.6 mW, with a peak efficiency of 80.99 %.

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Krist, Jakub. "Spínaný napájecí zdroj." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221027.

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The thesis is focused on design the switching power supply according to Push-pull topology rules. The work describes basic theoretic principles of Push-pull topology with design of circuit and circuit elements.

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Fiala, Zbyněk. "Budiče spínacích výkonových tranzistorů GaN MOSFET." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242073.

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The thesis describes the procedure during the proposal of the driver circuits for the GaN MOSFET transistors, which are known for their fast switching especially. In the first instance of this thesis the issue of GaN MOSFET transistors is described and also the thesis describes the different types of MOSFET transistors in the way of their electrical and mechanical attributes. The specific type driver circuit is stated in the thesis, which was selected in the semestral thesis. For this circuit the boost converter with an output power 600W and high switching frequency 800kHz was proposed as an attempt measurement circuit. This boost converter was measured after its construction was done. The waveforms captured by the oscilloscope are commented also. In the conclusion the assessment is done about this new technology of power switching transistors.

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Tseng, Chi-Lin, and 曾旗林. "Design of transformer-Based gm-Boosted CMOS Gilbert-Cell Mixer and 67-80 GHz GaAs Gilbert-Cell Mixer." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/98110249940291804817.

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碩士<br>龍華科技大學<br>電子工程系碩士班<br>103<br>In this thesis, two active mixcer were design and implementation in different bands, using a 0.16 um CMOS process and a 0.1 um GaAs pHEMT process, respectively. A 10 to 15 GHz active double-balanced mixer in 0.16 um CMOS process was used, the Gilbert-cell mixer with transformer to achieve transconductance-boosted in transconductance stage and to reduce LO input power in switching stage, The current-reused current bleeding technique also adopted to rise up the conversion gain. The active load with TIA buffer was employed to improve linearity. The maximum conversion gain of proposed mixer was 17.5 dB at 12 GHz PLO=2 dBm. The mixer occupies a chip area, including probing pads, of 0.77 mm2 and consumes 25.5 mA, with a supply voltage of 1.8 V. A 67 to 80 GHz active double-balanced millimeter-wave Gilbert-cell mixer in 0.1 um GaAs pHEMT process was studied. Two Marchand baluns are used in RF- and LO-ports to convert single-ended signals to differential signals, for wideband use. The differential amplifier and source follower are added in IF ports to rise up conversion gain and improve matching. The maximum mixer conversion gain is 16.31 dB at 77 GHz at PLO=3 dBm and 2.25 mm2 size with 456.7 mW power consumption.

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Chen, Shun-De, and 陳順德. "A Study of Zero-Voltage-Transition applied to Two-Inductor Boost Converter Using Auxiliary Transformer." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/55795658336959617042.

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碩士<br>國立海洋大學<br>電機工程學系<br>91<br>Two-inductor boost converter with auxiliary transformer is suitable for applications with a large difference between the input and output voltage. The converter is achieved in a wide load range with constant-frequency control by employing an auxiliary transformer that couples the current paths of the two boost inductors. Zero-Voltage-Transition techniques which combine PWM with the soft-switching characteristics make the converter can be operated at constant frequency. ZVT structure has no increase voltage and current stress. The rectifier diode also has soft-switching characteristic. Therefore, ZVT converters have the minimum conduction loss. This thesis will analyze and discuss the characteristics of the ZVT-PWM technique applied to the two-inductor boost converter.

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Books on the topic "Booster transformer"

1

Bozkaya, Halil. A comparative assessment of 50 kv autotransformer and 25 kv booster transformer railway electrification systems. University of Birmingham, 1987.

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2

The 2006-2011 World Outlook for Power Regulators, Boosters, and Other Transformers and Parts for All Transformers. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Power Regulators, Boosters, and Other Transformers and Parts for All Transformers. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Transmission and Distribution Voltage Regulators, Boosters, and Other Special-Purpose Transformers. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Transmission and Distribution Voltage Regulators, Boosters, and Other Special-Purpose Transformers. ICON Group International, Inc., 2006.

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AZAG, Sofiane. J'Ose Innover: Booster Votre Créativité et Transformez Votre Idée en Projet Innovant - Se Réaliser en Réalisant - Nourrissez la Graine Qui Est en Vous. Independently Published, 2020.

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Canjels, Rudmer. Changing Views and Perspectives. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252037689.003.0002.

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This chapter examines Pearl White's serials in France and the transformations made in tailoring them to the local French setting during World War I. It first provides an overview of the glocalization of American serial films in France before discussing two of Pearl White's serials, Les Mystères de New-York and The House of Hate (La Maison de la haine). It then considers the marketing adaptations and marketing tie-ins of the serials for the French market, along with the incorporation of anti-German propaganda in their French novelizations. In shows that the adaptation not only aligned promotional material or changing intertitles to accommodate viewership, but also, under the stress of war, localization transformed a supposedly national body of “foreign” films into a highly flexible transnational film form. The chapter also explains how Pearl White's love for France that was often made apparent in her serials boosted the French admiration of her.

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Kim, Jessica M. Imperial Metropolis. University of North Carolina Press, 2019. http://dx.doi.org/10.5149/northcarolina/9781469651347.001.0001.

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In this compelling narrative of capitalist development and revolutionary response, Jessica M. Kim reexamines the rise of Los Angeles from a small town to a global city against the backdrop of the U.S.-Mexico borderlands, Gilded Age economics, and American empire. It is a far-reaching transnational history, chronicling how Los Angeles boosters transformed the borderlands through urban and imperial capitalism at the end of the nineteenth century and how the Mexican Revolution redefined those same capitalist networks into the twentieth. Kim draws on archives in the United States and Mexico to argue that financial networks emerging from Los Angeles drove economic transformations in the borderlands, reshaped social relations across wide swaths of territory, and deployed racial hierarchies to advance investment projects across the border. However, the Mexican Revolution, with its implicit critique of imperialism, disrupted the networks of investment and exploitation that had structured the borderlands for sixty years, and reconfigured transnational systems of infrastructure and trade. Kim provides the first history to connect Los Angeles’s urban expansionism with more continental and global currents, and what results is a rich account of real and imagined geographies of city, race, and empire.

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Bleakley, Chris. Poems That Solve Puzzles. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198853732.001.0001.

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Algorithms are the hidden methods that computers apply to process information and make decisions. The book tells the story of algorithms from their ancient origins to the present day and beyond. The book introduces readers to the inventors and events behind the genesis of the world’s most important algorithms. Along the way, it explains, with the aid of examples and illustrations, how the most influential algorithms work. The first algorithms were invented in Mesopotamia 4,000 years ago. The ancient Greeks refined the concept, creating algorithms for finding prime numbers and enumerating Pi. Al-Khawrzmi’s 9th century books on algorithms ultimately became their conduit to the West. The invention of the electronic computer during World War II transformed the importance of the algorithm. The first computer algorithms were for military applications. In peacetime, researchers turned to grander challenges - forecasting the weather, route navigation, choosing marriage partners, and creating artificial intelligences. The success of the Internet in the 70s depended on algorithms for transporting data and correcting errors. A clever algorithm for ranking websites was the spark that ignited Google. Recommender algorithms boosted sales at Amazon and Netflix, while the EdgeRank algorithm drove Facebook’s NewsFeed. In the 21st century, an algorithm that mimics the operation of the human brain was revisited with the latest computer technology. Suddenly, algorithms attained human-level accuracy in object and speech recognition. An algloirthm defeated the world champion at Go - the most complex of board games. Today, algorithms for cryptocurrencies and quantum computing look set to change the world.

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Haden, Roger. Food Culture in the Pacific Islands. ABC-CLIO, LLC, 2009. http://dx.doi.org/10.5040/9798400652523.

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The food culture of the Pacific Islands has been determined by isolation from the rest of the world. Original immigrants from Asia brought their foods, animals, and culinary skills with them, then for several thousand years, they were largely uninfluenced by outsiders. The tropical climate of much of the region, unique island geology and environmental factors also played a role in the evolution of islander cuisine, which is based on unique ingredients. The staples of breadfruit, yams, taro, coconut, sweet potato, and cassava are incorporated into a cuisine that uses cooking and preservation techniques unique to Polynesia, Micronesia, and Melanesia. Today, food culture in the Pacific is largely one of extremes. Although traditional foods and cookery survive and are highly valued, Westernization has meant that the overall diet of islanders has been negatively transformed and that islands are net importers of unhealthful foods. Ironically, the tourism industry has re-engaged islander people in food production and boosted their sense of identity. Students, food mavens, and travellers will find this to be a stellar introduction to the current culture of the Pacific Islands, with discussion of Hawaii, Australia, and New Zealand included. Chapter 1, Historical Overview, offers a fascinating chronicle of the evolution of a food culture of extremes, of isolation, climate, environment, and Western influences. Chapter 2, Major Foods and Ingredients, introduces a host of traditional tropical manna as well as imported products. The Cooking chapter discusses the truly unique cooking styles of the islands, such as steam-baking in the ground in an umu (oven). Chapter 4, Typical Meals, largely explores the emphasis on the ubiquitous processed foods. A Regional Specialties chapter reveals both pan-regional dishes and the noted local dishes. Chapter 6's Eating Out discussion shows the new acceptance of the individualist, recreational ritual of eating away from the community. The typical life-cycle food rituals are covered in the Special Occasions chapter. A final chapter on Diet and Health highlights the increase in Western diseases arising from diet and lifestyle changes and discusses timely food security issues as well. Recipes are interspersed throughout, and a timeline, glossary, selected bibliography, and photos round out the coverage.

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Book chapters on the topic "Booster transformer"

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Kamble, Kiran P., and Vijay R. Ghorpade. "Video Event Description Booster By Bi-Modal Transformer, Identity, and Emotions Capturing." In Lecture Notes in Networks and Systems. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0483-9_31.

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Yang, Zhike, Bin Wu, Zhuoping Yuan, Huang Tang, and Song Li. "Study on Heat Transfer and Water Temperature Influencing Factors of Transformer Water spray System Pipeline in Cold Area Booster Station Projects." In Advances in Engineering Research. Atlantis Press International BV, 2025. https://doi.org/10.2991/978-94-6463-650-5_5.

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Anil Rahood, Pratik, Prasanna Kumar Kumaresan, and Bharathi Raja Chakravarthi. "DepBoost-TransNet: Boosted Transformer Network for Depression Classification." In Communications in Computer and Information Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-58495-4_8.

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Hsu, Chih-Chung, Sheng-Jay Dai, and Shao-Ning Chen. "COVID-19 Infection Percentage Prediction via Boosted Hierarchical Vision Transformer." In Lecture Notes in Computer Science. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13324-4_45.

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Komyakov, Aleksandr, Mikhail Nikiforov, Viktor Tarasevich, and Lyubov Bartel. "Booster Transformers Energy Performance Assessment in the Traction Power Supply System of Railway Transport." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-6934-6_1.

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Mahajan, S. B., Padmanaban Sanjeevikumar, K. M. Pandav, R. M. Kulkarni, and V. A. Sherke. "Buck–Boost Current Converter Using Duality Concept and Its DC Transformer Modelling." In Advances in Power Systems and Energy Management. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4394-9_32.

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Lin, Ruohan, Wangjing Qi, and Tao Wang. "Multi-level Augmentation Boosts Hybrid CNN-Transformer Model for Semi-supervised Cardiac MRI Segmentation." In Neural Information Processing. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-8079-6_43.

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Samiullah, Md, Imtiaz Ashraf, and Atif Iqbal. "A Transformer-Less Ultra-Gain Switched Inductor Boost Converter for DC Microgrid Applications." In Lecture Notes in Electrical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4080-0_66.

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Bari, Mohd Faizan, Dilip Singh Sisodia, and Arti Anuragi. "Empirical Wavelet Transform and Gradient Boosted Learners for Automated Classification of Epileptic Seizures from EEG Signals." In Artificial Intelligence Enabled Signal Processing based Models for Neural Information Processing. CRC Press, 2024. http://dx.doi.org/10.1201/9781003479970-4.

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Raharilaza, Nathalie Viviane. "Degraded Landscape Transformed into Foodland and Woodland by Village Agroforestry." In Fostering Transformative Change for Sustainability in the Context of Socio-Ecological Production Landscapes and Seascapes (SEPLS). Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6761-6_3.

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AbstractThis case study shares the results and lessons learned from agroforestry practices to restore a degraded and abandoned landscape, the production of seedlings of native and endemic tree species for forest restoration, and a trial of autochthones species transplantation at the village level in Madagascar. Awareness-raising and facilitation carried out by the NGO team on landscape changes and their effects on local people’s lives, food and natural resources, were the initial drivers of this process. A farmer led the landscape restoration experimentation by taking part of his poor, degraded land that had been long abandoned, and giving the green light to use it as a ‘farmer field school’. The community decided to keep the other side of the field untouched to enable comparison. Community members learned from each other by periodically sharing experiences. Community capacity-building on family accounting, production and harvest management helped community members to make decisions regarding the choice of crops and landscaping types suited to their needs. The community started to see results from the third year and increased the landscaped areas to boost future production. Some native trees like Harina (Bridelia tuleasneana), a highly preferred tree usually harvested from the rainforest for building materials, adapted very well to the village. The villagers learned to plant them rather than harvest them from the natural forest. The commitment, patience and courage of the community, and their immense pride in what they have achieved, created a cascading effect leading to sustainability.

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Conference papers on the topic "Booster transformer"

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Komyakov, Aleksandr, and Lubov Bartel. "Operation Simulation of a Traction Power Supply System With a Booster Transformer Under Various Power Supply Schemes." In 2025 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2025. https://doi.org/10.1109/icieam65163.2025.11028412.

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Komyakov, Aleksandr, Mikhail Nikiforov, Olga Komyakova, and Vladimir Ivanchenko. "Control of Voltage Level in Railway Contact Network Using IGBT Booster Transformers." In 2024 IEEE 4th New Energy and Energy Storage System Control Summit Forum (NEESSC). IEEE, 2024. http://dx.doi.org/10.1109/neessc62857.2024.10733387.

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Hong, Qin, Liang Zhou, Zhongning Jia, Chun Liu, and Jianbo Liu. "Design of high output DC/DC boost circuit without boost transformer." In 2024 8th International Conference on Communication and Information Systems (ICCIS). IEEE, 2024. https://doi.org/10.1109/iccis63642.2024.10779434.

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Kini, Venkataramana, Ravi Divvela, Unmesh Phadke, Narayanan Sadagopan, Fei Wang та Zhen Wen. "Trajectory Boosted Transformer Model and KG/LLM based μ-Genre for PV Offer/Content Type Arbitration". У 2024 IEEE International Conference on Knowledge Graph (ICKG). IEEE, 2024. https://doi.org/10.1109/ickg63256.2024.00015.

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Ravitheja, Rage, Karthik Thirumala, and Manoranjan Sahoo. "Single-phase Single-stage Transformer-less Common Ground-based Buck-boost Inverter." In 2024 IEEE 4th International Conference on Sustainable Energy and Future Electric Transportation (SEFET). IEEE, 2024. http://dx.doi.org/10.1109/sefet61574.2024.10718016.

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Sun, Bo, Yanhui Qiu, Daolian Chen, and Liangcai Wu. "Boost Mode Single-Stage Multi-Input Current Source Inverter with High-Frequency Transformer." In 2024 6th International Conference on Energy Systems and Electrical Power (ICESEP). IEEE, 2024. http://dx.doi.org/10.1109/icesep62218.2024.10651720.

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Ardashir, Jaber Fallah, Aydin Mohammad Ogly, Hadi Vatankhah Ghadim, Mitra Sarhangzadeh, Hossein Khoun Jahan Azarbaijan та Amin Mohammadpour Shotorbani. "A 1-Source 3- φ Boost Transformer-less Multilevel Inverter without Leakage Current". У 2024 9th International Conference on Technology and Energy Management (ICTEM). IEEE, 2024. http://dx.doi.org/10.1109/ictem60690.2024.10631963.

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Xu, Yunfeng, Weimin Wu, Houqing Wang, Frede Blaabjerg, Mohamed Orabi, and Liang Yuan. "A Novel Transformer-less Buck-Boost Inverter with Coupled Inductor for Photovoltaic Systems." In 2024 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2024. https://doi.org/10.1109/ecce55643.2024.10861303.

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Zhang, Xudong, Yaqian Zhang, Fujin Deng, and Jianzhong Zhang. "Optimal Design of Power Electronic Transformer based on Hybrid MMC under Boost-AC operation." In 2024 3rd International Conference on Power Systems and Electrical Technology (PSET). IEEE, 2024. https://doi.org/10.1109/pset62496.2024.10808314.

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Sosnina, Elena, Anatoliy Asabin, Alexey Kralin, and Evgeny Kryukov. "Voltage Control with Thyristor-Regulated Booster Transformer." In 2018 International Conference on Smart Grid (icSmartGrid). IEEE, 2018. http://dx.doi.org/10.1109/isgwcp.2018.8634477.

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Reports on the topic "Booster transformer"

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Liu, Chuyu. Impedance simulation for LEReC booster cavity transformed from ERL gun cavity. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1232701.

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Ahrens L. Signal Induced on the Booster Current Transformers by Pulsing the C7 Fast Injection Magnet. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/1131630.

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Giordano, Paolo, and Cloe Ortiz de Mendívil. Trade in Services in Latin America and the Caribbean: An Overview of Trends, Costs, and Policies. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003801.

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Trade in services is becoming increasingly relevant. Changing technologies have transformed the landscape, making international trade possible in sectors that were once considered nontradable. But the lack of consistent, reliable data prevents analysts from fully understanding and accurately describing trade in services. Despite this limitation, this report aims to outline Latin America and the Caribbeans competitiveness in global services markets. It concludes that the region still focuses on traditional sectors like travel and transportation, despite some green shoots in nontraditional services, and that costs remain high in comparison with other regions of the world. Furthermore, the regulatory framework in the region is still weak, and although several modern trade agreements are already in place, there is still room for improvement. Sound policies to further develop trade in services and boost competitiveness in nontraditional sectors such as computer or business services would help the region to diversify its export baskets and build trade resilience.

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Muthike, Wairimu, Wanja Nyaga, and Wanjiku Kiarie. Decolonizing food systems: promoting traditional vegetables for sustainable nutrition in Kenya and India. Busara, 2024. http://dx.doi.org/10.62372/dutw3025.

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In Migori County, Kenya, the revolution of Amaranth (Amaranthus spp.) from a weed to a staple food crop demonstrates the potential of indigenous vegetables to enhance food security and foster community resilience. For a long time, the plant occurred widely as a weed, most often referred to as ‘pigweed’, which meant that it could not be consumed as a food crop. The Amaranth, originally from South America, is a plant that produces edible leaves and grains upon maturity. The plant also boasts drought-resistance qualities and versatility. It has since found its place in local kitchens and commercial markets. Amaranth has various nutritional benefits including producing a high amount of fiber that aids with digestion and general gut health. Its leaves can be used as salad, its stem as livestock feed, and its grains can be ground into flour. Farmers in Migori, through training, have grown and utilized this superfood, resulting in a significant boost to their livelihoods and health. Amaranth’s journey from weeds to a valuable food source is one example of how traditional vegetables can empower local communities and create sustainable food systems when given the necessary attention and support. The African Nightshade (Solanum Nigrum), native to several African countries, and Gogu leaves (Hibiscus Sabdariffa) in the Asian continent, also hold similar potential to transform not only livelihoods but also nutrition and, ultimately, food security. Over the years, these traditional vegetables have adapted to local climates and acquired cultural significance among communities. For generations, amaranth has been used as both a food source and for medicinal purposes, demonstrating its resilience and versatility. In Kenya, we see Amaranth-based products like blended flour and popcorn.

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Renewable Energy Experiences in Nicaragua to Generate Electricity. Inter-American Development Bank, 2015. http://dx.doi.org/10.18235/0007005.

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In 2013, Nicaragua ranked third in Latin America for investments in renewable energy. This was because Nicaragua's energy composition had a high level of renewable sources and investments in renewable energy were high relative to the size of its economy. In 2008, electricity generated in Nicaragua from fuel oil was 68 percent while renewable energy was responsible for only 32 percent. By 2014, however, the electricity generated using renewable resources increased to 52 percent.Multiple institutions share responsibility for governing Nicaragua's electricity sector. The main institution is the Ministry of Energy and Mines (MEM), which is in charge of producing policies and strategies to develop the national electricity sector and granting the authorizations to generate, transmit and distribute electricity. This Ministry plays an important role in developing renewable energy in Nicaragua and its main goal is to maintain an energy policy that allows continued electricity generation from renewable resources. Nicaragua is determined to transform its energy composition from one heavily reliant on fuel oil to one based principally on renewable energy. For that reason, the Nicaraguan government has approved specific laws that provide incentives to boost electricity generation through the development of renewable energy projects. The electrification rate has increased steadily in Nicaragua, from 47 percent in 2002 to 80 percent in 2014. Part of this increase is due to small hydroelectric power plants in rural areas. The development of renewable energy in Nicaragua has led to a number of positive outcomes that include the improved governance and regulation of the energy sector, stabilization of energy policy, creation of an investment promotion agency with private-sector participation, and increased international cooperation. In the last 3 years, increased electricity generation through renewable energy has stabilized energy prices for consumers. Nicaragua's goal is to generate 90 percent of its electricity from renewable resources by 2020.

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