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

Modelling and simulation of collisional particle breakage mechanisms are crucial in several physical phenomena (asteroid belts, molecular clouds, raindrop distribution etc.) and process industries (chemical, pharmaceutical, material etc.). This paper deals with the development and analysis of schemes to numerically solve the multi-dimensional nonlinear collisional fragmentation model. Two numerical techniques are presented based on the finite volume discretization method. It is shown that the proposed schemes are consistent with the hypervolume conservation property. Moreover, the number preservation property law also holds for one of them. Detailed mathematical discussions are presented to establish the convergence analysis and consistency of the multi-dimensional schemes under predefined restrictions on the kernel and initial data. The proposed schemes are shown to be second-order convergent. Finally, several numerical computations (one-, two- and three-dimensional fragmentation) are performed to validate the numerical schemes.

Development and analysis of moments preserving finite volume schemes for multi-variate nonlinear breakage model

We report the maximum reflectivity (12 dB, 93.7 %) so far observed for FBGs written by biprism interferometer, in single mode photosensitive fiber without hydrogen loading.

Optimization of FBG writing by biprism interferometer

. Let R be a ring with unity. The cozero-divisor graph of a ring R is an undirected simple graph whose vertices are the set of all non-zero and non-unit elements of R and two distinct vertices x and y are adjacent if and only if x / ∈ Ry and y / ∈ Rx . The reduced cozero-divisor graph of a ring R is an undirected simple graph whose vertex set is the set of all nontrivial principal ideals of R and two distinct vertices ( a ) and ( b ) are adjacent if and only if ( a ) (cid:54)⊂ ( b ) and ( b ) (cid:54)⊂ ( a ). In this paper, we characterize all classes of ﬁnite non-local commutative rings for which the cozero-divisor graph and reduced cozero-divisor graph are of genus two.

Characterization of rings with genus two cozero-divisor graphs

The rural populations consisting of marginal and poor farmers are dependent on labourers for all farm related activities like sowing / planting of paddy, harvesting of agricultural and horticultural produce and application of pesticides which can be very costly. These labourers also face a lot of problems in sowing / planting of paddy as it has to be done by  bending down continuously or during application of pesticides to cotton fields drift can be major health concern and harvesting different produce like bhendi due to its thorny spikes and capsaicin content of chilies. In view of this, KVK, Wyra, Khammam has assessed cost effective homestead implements and is relentlessly trying to popularize them. These included use of protective clothing during application of pesticides, rolling stem applicator for controlling sucking pest in cotton, knitted gloves for bhendi plucking and chilli finger guard for its plucking.  These simple and cost-effective farm implements helped farm women in drudgery reduction, ergonomic stress on various body parts, improved work efficiency, decreased labour cost and body allergies. Protective clothing reduced itching, irritation, skin allergies, burning, vomiting, headache and faintness over a month’s time, rolling stem applicator was ecofriendly and decreased the amount of chemicals, knitted gloves for bhendi plucking reduced the bruising and repeated damage to fingers during harvesting and chilli finger guard. The reduction in stress on body parts automatically improved the work efficiency among farm workers. 

A Study on Affordable Homestead Implements for Stress Reduction on Body Parts amongst Farm Workers of Khammam District, India

The present study was undertaken in Khammam District of Telangana having large area under rice cultivation. In Khammam district almost 7000 acres of area is under dry converted wet rice. Krishi Vigyan Kendra , Wyra has put tremendous efforts to disseminate the dry converted Wet technology to farmers. Thus the sequel is evident that in Khammam district that approximately 5000 farmers are following Dry Converted Wet Cultivation in rice. It was felt important to assess the knowledge level of practicing farmers in order to identify the gaps in adoption .From Six villages 20 farmers were selected for the study . The data was collected by random sampling technique. Total of 120 respondents were selected for the study. The data was collected by personal interview. Based on the finding of the study majority of the respondents were having medium level of knowledge, followed by high level and low level of knowledge. While in case of adoption, that majority of the respondents had medium adoption, followed by high and low of adoption.

/pdf/a-study-on-the-knowledge-level-and-extent-of-adoption-of-dry-3ua8s4x2.pdf

Jitendra Kumar

Papers

Development and analysis of moments preserving finite volume schemes for multi-variate nonlinear breakage model

Optimization of FBG writing by biprism interferometer

Characterization of rings with genus two cozero-divisor graphs

A Study on Affordable Homestead Implements for Stress Reduction on Body Parts amongst Farm Workers of Khammam District, India

A study on the knowledge level and extent of adoption of dry converted wet rice in Khammam district of Telangana