Self-reported multicultural supervision competence of White predoctoral intern supervisors.

This study assessed the self-reported supervision practices, experiences, and multicultural competence of White intern supervisors (n = 211). White training directors and staff psychologists who were currently supervising predoctoral interns completed a 2-page survey regarding their multicultural supervision. Female supervisors reported higher multicultural supervision competence and spent more time processing cultural differences with their supervisees than male supervisors. Training directors also reported higher multicultural supervision competence than staff psychologists. Further, the number of interns supervised currently and over a career significantly predicted multicultural supervision competence. Recommendations for White intern supervisors include ongoing participation in education and professional practice experiences to improve multicultural supervision competence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Transparent Amorphous Silica to Model Clay

The fundamental premise of this research is that transparent synthetic materials with geotechnical properties similar to natural soils can be used in model tests to study three-dimensional deformation and flow problems using nonintrusive optical visualization techniques. The transparent “clays” discussed in this paper were made by consolidating suspensions of amorphous silica in a pore fluid with a matching refractive index. Conventional triaxial compression, consolidation, and permeability tests were performed to study the behavior of the material under normally consolidated and overconsolidated conditions. This paper demonstrates the feasibility of producing a family of transparent materials, which can be customized to exhibit shear-strength, pore-pressure, volume-change, and permeability characteristics that are consistent with the behavior of natural clays.     

Marion White McPherson (1919–2000).

Presents an obituary for Marion White McPherson, who had a long and fruitful career in child clinical psychology and the history of psychology, cofounding an archives for American psychology, and authoring numerous articles and books. Details on her work history, education, accomplishments, and contributions to the history of psychology are presented. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Characterisation studies on swelling behaviour of iron ore pellets

At JSW Steel Limited (JSWSL), pellets form the major part of the iron-bearing feed to corex and blast furnace. JSWSL produces low-basicity pellets ((CaO/SiO₂) – 0.40 to 0.50). The quality of the pellet is affected by the raw material chemistry (gangue content), flux proportion and their subsequent heat treatment to produce the fired pellets. The raw material silica, limestone addition, i.e. basicity – CaO/SiO₂ of pellet decides the mode, temperature and the amount of melt formed. The properties of the pellets are, therefore, largely governed by the form and degree of bonding achieved between ore particles and also by the stability of these bonding phases during the reduction of iron oxides. In the present study, laboratory pelletisation experiments have been carried out to know the effects of silica and basicity on the microstructure and swelling behaviour of pellets during reduction. Phase analysis was carried out using image analyser, and chemical analysis of oxide and slag phases was carried out using SEM–EDS. From the laboratory studies, it was observed that the swelling index of the pellets decreased with an increase in silica content due to the decrease in porosity. The presence of higher silica in pellet hinders the reduction step of haematite to magnetite at lower temperatures. Pellets with basicity range 0 to 0.1 exhibited lower swelling index due to the formation of high melting point fayalite phase and also at this basicity range the structure is held together by the seam-like compounds between Fe₂O₃ and SiO₂ primarily at high silica content. Higher swelling index was observed at the basicity range 0.3 to 0.7 due to the presence of low melting point calcium olivines (1115°C) between fayalite (FeSiO₄) and dicalcium silicate (Ca₂SiO₄). Low melting point slag phase enhances the swelling index of the pellets. Swelling index of the pellets considerably dropped between the basicity range 0.9 to 1.1 due to the formation of calcium ferrite phases with a close pore structure.     

烧结法深度脱硅工艺试验研究

指出了烧结法精液钠硅渣不分离加石灰乳脱硅工艺存在的问题,通过实验室研究,提出了加絮凝剂使硅渣浆液快速分离,加石灰乳深度脱硅的工艺流程。并初步预测了该工艺实施后的经济效益。     

Pore structure and chloride ion permeability of mortars containing silica fume

The addition of silica fume in concrete causes a remarkable increase in strength and a drastic reduction in chloride ion permeability. These effects may be due primarily to microstructural changes both in the cement paste phase and in the interfacial zone around aggregates. The standard method of test for rapid determination of the chloride permeability of concrete, AASHTO T 277–831, has increasingly been used to evaluate the permeability of concrete. However, for the concrete containing silica fume, the results of the AASHTO T 277–831 test, which is expressed in terms of electrical charge passed, do not necessarily reflect the real diffusion index of chloride ion through the concrete. There seems to be factors other than the pore structure which govern the results of the AASHTO T 277–831 test in the concrete containing silica fume. In this study, the effects of silica fume to reduce the chloride ion permeability of the mortar were investigated based on the results of pore size distribution measurements, X-ray diffraction analysis, SEM observations and pore solution extraction. The application of the AASHTO T 277–831 test to the evaluation of the chloride ion permeability of the concrete containing silica fume was discussed.     

Magnetic susceptibility measurements of LHP and LNP crystals

Ferroelectric single crystals such as lead hydrogen phosphate (LHP) and dihydrated lead nitrate phosphate (LNP) have been derived from the diffusion of lead nitrate into the set gel containing orthophosphoric acid. By employing Faraday’s Gouy balance technique, the magnetic susceptibilities of LHP and LNP have been determined. It has been observed that (i) the gram and molar susceptibilities are independent of magnetic field, (ii)χ _M of LNP materials are greater than that of LHP materials and (iii) the positive values of magnetic susceptibilities suggest that LHP and LNP are paramagnetic materials.     

Race/ethnicity, color-blind racial attitudes, and multicultural counseling competence: The moderating effects of multicultural counseling training.

Increasing trainees' multicultural counseling competence (MCC) has been a hot topic in counseling. Scholars have identified predictors (e.g., race/ethnicity, color-blindness) of MCC, and educators provide multicultural training for trainees. Using a sample of 370 psychology trainees, this study examined whether multicultural training (a) moderated racial/ethnic differences on MCC and (b) changed the relationship between color-blindness and MCC. Results indicated a significant interaction effect of race/ethnicity (i.e., White vs. ethnic minority) and multicultural training on multicultural awareness, but not on multicultural knowledge. Specifically, at lower levels of training, racial/ethnic minority trainees had significantly higher multicultural awareness than their White counterparts; at higher levels of training, no significant difference was found. Described differently, more training significantly enhanced Whites' multicultural awareness, but did not enhance racial/ethnic minority trainees' awareness. Additionally, there was a significant interaction effect of color-blindness and multicultural training on multicultural knowledge, but not on multicultural awareness. The association between color-blindness and multicultural knowledge was stronger at higher levels of multicultural training than at lower levels of training. Alternatively, the effect of training on enhancing knowledge was stronger for those with lower color-blindness than for those with higher color-blindness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Miniature interferometric humidity sensors based on silica/polymer microfiber knot resonators

In this paper, two fiber-optic interferometric humidity sensors based on silica/polymer microfiber knot resonators (SMKR/PMKR) are reported. These tiny humidity sensors are directly fabricated by using silica/polymer microfibers without any humidity-sensitive coating. The silica microfiber knot resonator sensor has a humidity sensitivity of ∼12 pm/10%-RH within a linearity range from 15%-RH to 60%-RH, while the polymer microfiber knot resonators sensor has a humidity sensitivity of ∼88 pm/10%-RH, with a linearity range from 17%-RH to 95%-RH. The temporal response of the PMKR sensor is <0.5 s. Such types of humidity sensors have advantages of easy fabrication, fast response, extremely compact size, stable and low cost, they would find potential applications in micro-scale humidity sensing.     

Pricing the financial Heston–Hull–White model with arbitrary correlation factors via an adaptive FDM

This paper is concerned with the pricing procedure of one of the most challenging models known as the Heston–Hull–White partial differential equation (PDE) in option pricing, at which the model is a time-dependent 3D linear PDE including three mixed derivative terms. The model comes from the fact that the price, the volatility and the interest rate are assumed to be stochastic processes. To contribute and avoid huge discretized systems, an adaptive distribution of the nodes (viz, nonuniform nodes) is taken into account with emphasis on the hot area of the solution curve. New adaptive finite difference (FD) formulas of higher orders are constructed on these meshes. Then, a set of semi-discretized equations is attained which is tackled by a time-stepping method. Several financial tests are discussed in detail to reveal the superiority of the proposed approach.