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

正しい方法がわかる臨床基本手技 : from the New England journal of medicine

New generation adsorbents for water treatment.

Large-scale electrolysis of water for hydrogen generation requires better catalysts to lower the kinetic barriers associated with the oxygen evolution reaction (OER). Although most OER catalysts are based on crystalline mixed-metal oxides, high activities can also be achieved with amorphous phases. Methods for producing amorphous materials, however, are not typically amenable to mixed-metal compositions. We demonstrate that a low-temperature process, photochemical metal-organic deposition, can produce amorphous (mixed) metal oxide films for OER catalysis. The films contain a homogeneous distribution of metals with compositions that can be accurately controlled. The catalytic properties of amorphous iron oxide prepared with this technique are superior to those of hematite, whereas the catalytic properties of a-Fe100-y-zCoyNizOx are comparable to those of noble metal oxide catalysts currently used in commercial electrolyzers.

https://science.sciencemag.org/content/sci/early/2013/03/27/science.1233638.full.pdf

Photochemical Route for Accessing Amorphous Metal Oxide Materials for Water Oxidation Catalysis

Control of spontaneously emitted light lies at the heart of quantum optics. It is essential for diverse applications ranging from miniature lasers and light-emitting diodes, to single-photon sources for quantum information, and to solar energy harvesting. To explore such new quantum optics applications, a suitably tailored dielectric environment is required in which the vacuum fluctuations that control spontaneous emission can be manipulated. Photonic crystals provide such an environment: they strongly modify the vacuum fluctuations, causing the decay of emitted light to be accelerated or slowed down, to reveal unusual statistics, or to be completely inhibited in the ideal case of a photonic bandgap. Here we study spontaneous emission from semiconductor quantum dots embedded in inverse opal photonic crystals. We show that the spectral distribution and time-dependent decay of light emitted from excitons confined in the quantum dots are controlled by the host photonic crystal. Modified emission is observed over large frequency bandwidths of 10%, orders of magnitude larger than reported for resonant optical microcavities. Both inhibited and enhanced decay rates are observed depending on the optical emission frequency, and they are controlled by the crystals’ lattice parameter. Our experimental results provide a basis for all-solid-state dynamic control
of optical quantum systems.

Controlling the dynamics of spontaneous emission from quantum dots by photonic crystals

The emission rate of greenhouse gases results in global warming and having some other environment-related issues and uncertainties This work presents a new approach to handle the effect of uncertainties and economic generation An optimization technique Lagrangian relaxation with priority list (LR-PL) has been used to handle Unit Commitment and Economic Emission Dispatch (UCEED) problem with the inclusion of renewable energy source such as solar energy An optimization technique has been developed to determine optimal solution and verified The proposed approach has been applied at standard IEEE 69-bus 11 electrical generators system An integration of the generator units with solar system is implemented After integration with solar system, two cases of peak and off-peak hours have been studied It is found that the developed approach is capable of handling the uncertainties in the solar radiation in an efficient manner The compared results show the better performance of the developed approach over the existing ones The compared results show the effectiveness of the developed approach

An Optimization Algorithm for Unit Commitment Economic Emission Dispatch Problem

Electric Vehicles (EVs) have several advantages over their counterparts, but the higher initial cost daunts their mass adoption. Hence, it is necessary to improve EV technology to make it more affordable and efficient. The traction motor is one of the significant components in EV. Synchronous reluctance motor is considered an excellent candidate for EV applications, especially in field weakening regions. In this paper, three different synchronous reluctance motor topologies are designed and compared for the required application while keeping the same constraints. The three proposed topologies discussed in this paper are magnet-free synchronous reluctance motor (SyRM), Ferrite permanent magnet assisted synchronous reluctance motor (ferrite PMa-SyRM) and, Nd-Fe-B permanent magnet assisted synchronous reluctance motor (PMa-SyRM). Initially, the design process is carried out for all the motors with the help of the analytical approach. Further, 2-D FEA simulations are carried out for proposed motors. The performance is analysed based on significant parameters like torque, back-emf, air-gap flux density, and mechanical stress analysis. The results lead to the conclusion that ferrite PMa-SyRM is the best motor from an economic and performance perspective.

Jitendra Kumar

Papers

An Optimization Algorithm for Unit Commitment Economic Emission Dispatch Problem

Comparison of Magnet-less and PM Assisted Synchronous Reluctance Motors for Hybrid Electric Vehicle Application