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Millions of kids ride a bus to school every day, and many people ride buses to get around town. Bus drivers are a vital part of our community because they're the ones responsible for transporting students and other people safely. Your readers learn that bus drivers spend hours training to drive large vehicles and learn traffic rules. They know what to do in an emergency and how to keep everyone calm. Many bus drivers get to know their riders well. Bus drivers are a big reason why riding the bus is one of the safest ways to get to school.

Bus drivers. --- Transportation. --- E-books --- Bus drivers --- Transportation

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REA's Commercial Driver's License (CDL) Test Prep Puts You in the Driver's Seat! Updated 6th Edition Looking to get your CDL and start a new and profitable career? REA can get you headed in the right direction! Commercial drivers are in high demand across the United States, and a high score on the CDL vastlyimproves your chances for landing the job you want. This updated sixth edition of our top-selling test prep offers complete preparation for both the bus and truck driver licensing exams. Based on the current CDL exams, REA's Commercial Driver's License test prep focuses on what you need to know. Easy-to-follow review chapters cover all the topics tested on the exams, including: · General Knowledge · Passenger Transport · Combination Vehicles · Hazardous Materials · Tankers · Doubles/Triples · School Bus · Air Brakes · Metal Coil Checklists, diagrams, and definitions of must-know terms help reinforce your knowledge and skills as you study. This complete CDL test prep package features the latest information on the testing and licensing requirements in all 50 states. Learn the facts about the Commercial Motor Vehicle Safety Act, Rules, and Licensing, so you'll be well informed on the rules of the road. The book contains 9 practice tests that cover the entire scope of the CDL exams. Each practice test comes complete with detailed answer explanations. Unlike other test preps, we don't just say which answers are right, we explain why the other choices are wrong, giving you the context and confidence that will give you a valuable edgeon test day. REA's CDL test prep is a must for anyone preparing for this career-building exam!

Truck driving --- Truck drivers --- Bus driving --- Licenses

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The aim of this thesis is to design a part of the Electrical Power Supply (EPS) board of the nanosatellite OUFTI-2. The parameters to be fixed are the solar panels’ configuration and management, the Battery Management System (BMS), and their connection to the DC-DC converters distributing the power to all sub-systems. The battery pack, the solar panels and the DC-DC converters are already chosen from previous works on the satellite. The limitations and requirements imposed by the choice of these components are analysed. The state of the art of Maximum Power Point Tracking (MPPT)technology as well as Battery Management Systems (BMS) of Lithium-Polymer (LiPo) are summarised and compared. From this knowledge, several relevant EPS designs combining different MPPT controllers and BMS configurations are discussed and tested as well as their power paths. The final design is chosen to be a semi-regulated bus architecture connecting two SPV1040 MPPT controllers in series and an MCP73213 linear BCR to the DC-DC converters. Finally, the power budget of the satellite’s consumption and harvested power based on the chosen design is discussed. This first analysis ensures a net power margin of 300mW in the worst case orbit scenario, for a standard mode operation.

OUFTI-2 --- CubeSat --- Power Budget --- Electrical Power Supply --- Semi-regulated Bus --- D-STAR --- Power Path --- Ingénierie, informatique & technologie > Ingénierie électrique & électronique

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The ever-increasing need for higher efficiency, smaller size, and lower cost make the analysis, understanding, and design of energy conversion systems extremely important, interesting, and even imperative. One of the most neglected features in the study of such systems is the effect of the inherent nonlinearities on the stability of the system. Due to these nonlinearities, these devices may exhibit undesirable and complex dynamics, which are the focus of many researchers. Even though a lot of research has taken place in this area during the last 20 years, it is still an active research topic for mainstream power engineers. This research has demonstrated that these systems can become unstable with a direct result in increased losses, extra subharmonics, and even uncontrollability/unobservability. The detailed study of these systems can help in the design of smaller, lighter, and less expensive converters that are particularly important in emerging areas of research like electric vehicles, smart grids, renewable energy sources, and others. The aim of this Special Issue is to cover control and nonlinear aspects of instabilities in different energy conversion systems: theoretical, analysis modelling, and practical solutions for such emerging applications. In this Special Issue, we present novel research works in different areas of the control and nonlinear dynamics of energy conversion systems.

multi-clearance --- neural network --- zero average dynamics --- Cable3D --- variable bus voltage MG --- explosion-magnetic generator --- quadratic boost --- matrix norm --- coordinated control system --- permanent magnet synchronous motor (PMSM) --- photovoltaic (PV) --- power conversion --- capacitance current pulse train control --- air gap eccentricity --- high step-up voltage gain --- voltage ripple --- offset-free --- goal representation heuristic dynamic programming (GrHDP) --- current mode control --- sliding mode observer (SMO) --- multi-model predictive control --- combined heat and power unit --- discontinuous conduction mode (DCM) --- current-pulse formation --- sliding mode control --- single artificial neuron goal representation heuristic dynamic programming (SAN-GrHDP) --- subharmonic oscillations --- DC micro grid --- supply air temperature --- air-handling unit (AHU) --- vibration characteristics --- magnetic saturation --- slope compensation --- fixed-point inducting control --- the load of suspension point in the z direction --- variable switching frequency DC-DC converters --- droop control --- Helmholtz number --- plasma accelerator --- contraction analysis --- sliding control --- bifurcations in control parameter --- disturbance observer --- DC motor --- multiphysics --- virtual impedance --- pulverizing system --- ultrahigh voltage conversion ratio --- corrugated pipe --- DC-DC converters --- maximum power point tracking (MPPT) --- dynamic model --- nonlinear dynamics --- new step-up converter --- micro-grid --- global stability --- extended back electromotive force (EEMF) --- small-signal model --- electromagnetic vibration --- nonlinear dynamic model --- excited modes --- data-driven --- rigid body rotation --- position sensorless --- prediction --- centralized vs. decentralized control --- inferential control --- boost-flyback converter --- calculation method --- switched reluctance generator --- monodromy matrix --- bridgeless converter --- decoupling control --- distributed architecture --- wave --- buck converter --- soft sensor --- model–plant mismatches --- whistling noise --- efficiency optimization --- steel catenary riser --- moving horizon estimation --- single artificial neuron (SAN) --- space mechanism --- two-stage bypass --- electrical machine --- harmonic suppression --- local vs. global optimization --- performance recovery --- reinforcement learning (RL) --- adaptive dynamic programming (ADP) --- overvoltage --- planetary gears --- maximum power point tracking --- DC-DC buck converter --- power quality --- average-current mode control --- feedback coefficient --- power factor correction (PFC) --- capacitance current --- predictive control --- rotor dynamics