THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

This book, written by two major figures in adaptive control, provides a wealth of material for researchers, practitioners, and students. While some researchers in adaptive control may note the absence of a particular topic, the book‘s scope represents a high-gain instrument. It can be used by designers of control systems to enhance their work through the information on many new theoretical developments, and can be used by mathematical control theory specialists to adapt their research to practical needs. The book is strongly recommended to anyone interested in adaptive control.

Adaptive Control

Microgrids are now emerging from lab benches and pilot demonstration sites into commercial markets, driven by technological improvements, falling costs, a proven track record, and growing recognition of their benefits. They are being used to improve reliability and resilience of electrical grids, to manage the addition of distributed clean energy resources like wind and solar photovoltaic (PV) generation to reduce fossil fuel emissions, and to provide electricity in areas not served by centralized electrical infrastructure. This review article (1) explains what a microgrid is, and (2) provides a multi-disciplinary portrait of today's microgrid drivers, real-world applications, challenges, and future prospects.

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Microgrids: A review of technologies, key drivers, and outstanding issues

The limitation of hot spot cooling in microchips represents an important hurdle for the electronics industry to overcome with coolers yet to exceed the efficiencies required. Nanotechnology-enabled heat sinks that can be magnetophoretically formed onto the hot spots within a microfluidic environment are presented. CrO2 nanoparticles, which are dynamically chained and docked onto the hot spots, establish tuneable high-aspect-ratio nanofins for the heat exchange between these hot spots and the liquid coolant. These nanofins can also be grown and released on demand, absorbing and releasing the heat from the hot spots into the microfluidic system. It is shown that both high aspect ratio and flexibility of the fins have a dramatic effect on increasing the heat sinking efficiency. The system has the potential to offer a practical cooling solution for future electronics.

Dynamic nanofin heat sinks

This paper presents a comprehensive review and assessment of the latest research and advancement of electric vehicles (EVs) interaction with smart grid portraying the future electric power system model. The concept goal of the smart grid along with the future deployment of the EVs puts forward various challenges in terms of electric grid infrastructure, communication and control. Following an intensive review on advanced smart metering and communication infrastructures, the strategy for integrating the EVs into the electric grid is presented. Various EV smart charging technologies are also extensively examined with the perspective of their potential, impacts and limitations under the vehicle-to-grid (V2G) phenomenon. Moreover, the high penetration of renewable energy sources (wind and photovoltaic solar) is soaring up into the power system. However, their intermittent power output poses different challenges on the planning, operation and control of the power system networks. On the other hand, the deployment of EVs in the energy market can compensate for the fluctuations of the electric grid. In this context, a literature review on the integration of the renewable energy and the latest feasible solution using EVs with the insight of the promising research gap to be covered up are investigated. Furthermore, the feasibility of the smart V2G system is thoroughly discussed. In this paper, the EVs interactions with the smart grid as the future energy system model are extensively discussed and research gap is revealed for the possible solutions.

Electric vehicles and smart grid interaction: A review on vehicle to grid and renewable energy sources integration

Utilization of pure organic based room-temperature phosphorescent (RTPH) emitter as a sensitizer was studied by employing it in the yellow fluorescent organic light-emitting diodes (OLEDs). The RTPH sensitizer can harvest...

Purely Organic Phosphor Sensitization for Efficiency Improvement in Yellow Fluorescent Organic Light-Emitting Diode

The interior permanent magnet synchronous motor (IPMSM) is usually applied to the traction motor in the hybrid electric vehicle (HEV) and the electric vehicle (EV) due to its high-power density and wide speed range. In this paper, the IPMSM with concentrated winding for a 110cc electric motorcycle is introduced. In order to make the model operate correctly at high speed, optimization has to be performed while the output characteristics are preserved and satisfies the voltage limit. A design process which increases current and decreases number of turns while the ampere-turn is being preserved was performed. The voltage limit is decided by the voltage of the battery. On the other hand, current limit can be regarded as the maximum allowed current of switching devices of inverter or withstand current of each devices. The allowed current in this paper is 228A(peak), so design which increases the current is possible. If the number of turns is reduced and the current is increased, amount of no-load counter electromotive force and inductance alters but the torque, current phase angle, cogging torque, ratio of counter electromotive force harmonics, ohmic loss, iron loss, and structure do not change.

Study on the induced voltage according to the change of the winding turns

This paper suggests the design to attain the optimal efficiency of PMa-SynRM. Globally, Minimum Energy Performance Standards(MEPS) is largely implemented for reducing the consumption of energy. For satisfying MEPS which will be strengthened afterwards, ultra-premium efficiency motor which can surpass the super-premium level, should be fully researched and developed. However, SynRM is difficult to reach ultra-premium efficiency. Unlike SynRM, PMa-SynRM contains the permanent magnet, so it can reaches ultra-premium efficiency. However, to design PMa-SynRM, the fundamental design should be re-progressed through the selection of appropriate loading ratio. And it needs optimal design of rotor considering numerous variables of rotor. In this paper, the main design parameters which has a high sensitivity are selected through sensitivity analysis and the optimal design of rotor is implemented to reach the maximum efficiency. Then, the improvement of performance is confirmed by comparison to SynRM. Finally, the achievement of ultra-efficiency will be verified by experiment.

Study on the optimal design of PMa-SynRM loading ratio for achievement of ultra-premium efficiency

Exciton harvesting of dual-emitting room temperature organic phosphors using a thermally activated delayed fluorescence sensitizer

Permanent magnet synchronous motors (PMSMs) have higher torque and superior output power per volume than other types of AC motors. They are commonly used for applications that require a large output power and a wide range of speed. For precise control of PMSMs, knowing the accurate position of the rotor is essential, and normally position sensors such as a resolver or an encoder are employed. On the other hand, the position sensors make the driving system expensive and unstable if the attached sensor malfunctions. Therefore, sensorless algorithms are widely researched nowadays, to reduce the cost and cope with sensor failure. This paper proposes a sensorless algorithm that can be applied to a wide range of speed. The proposed method features a robust operation at low–speed as well as high–speed ranges by employing a gain adjustment scheme and intermittent voltage pulse injection method. In the proposed scheme the position estimation gain is tuned by a closed loop manner to have stable operation in tough driving environment. The proposed algorithm is fully verified by various experiments done with a 1 ㎾ outer rotor–type PMSM.

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Ju Lee

Papers

Purely Organic Phosphor Sensitization for Efficiency Improvement in Yellow Fluorescent Organic Light-Emitting Diode

Study on the induced voltage according to the change of the winding turns

Study on the optimal design of PMa-SynRM loading ratio for achievement of ultra-premium efficiency

Exciton harvesting of dual-emitting room temperature organic phosphors using a thermally activated delayed fluorescence sensitizer

Sensorless Scheme for Interior Permanent Magnet Synchronous Motors with a Wide Speed Control Range