铁水预处理温度下CaO－SiO_2－FeO－P_2O_5－CaF_2渣系中Ca

对１３００℃和１３５０℃的铁水预处理温度下ＣａＯ－ＳｉＯ＿２－ＦｅＯ－Ｐ＿２Ｏ＿５－ＣａＦ＿２渣系中ＣａＯ饱和溶解量进行了测定。实验结果表明，温度升高对提高ＣａＯ饱和溶解量有利；渣中ＣａＦ＿２、ＦｅＯ含量增加，ＣａＯ饱和溶解量减少；当渣组成位于ＣａＯ＋Ｌ和Ｌ交界上时，与其它区域相比，ＣａＯ达到饱和所需溶解时间最短。     

Conceptual level and accuracy of person perception.

Conceptual systems theory asserts that abstract conceptual functioning must include a well-developed capacity to "act as if" and ability to assume the role of the other. This proposition was tested in two samples of adolescents with a person perception task that required subjects to give a target person's actual responses to Cattell's 16PF Test immediately after exposure to the target. Two videotaped targets were used. Conceptual level was found to influence accuracy as predicted in three of four analyses, and sex of subject as predicted in two of four, with the effects of intelligence controlled. Accuracy in the postdiction task, and four components of accuracy, were relatively stable across targets. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Deep traps in GaAs revealed at high resolution by simple fast photocapacitance methods

The characteristics of a new type of capacitance spectroscopy of deep traps in semiconductors are reviewed. A double radiation source technique is employed, the first source controlling the occupation of the traps and the characteristic time constant of the experiment, the second probing the spectral distribution of traps by selectively photoinducing emission to the conduction and valence bands. Time differentiation enhances the detectivity of the traps and minimizes drift problems. Typical spectra obtained with this quasi-equilibrium spectroscopic technique are described. The chromium trap in GaAs presents a distinctive feature with interesting properties which are discussed. Comparisons with thermal capacitance measurements are made, showing the complementary nature of the two methods. The use of the technique to detect out-diffusion of Cr from an insulating substrate into an epitaxial layer is described.     

Self-Monitoring, Activity Levels, and Mood in the Development and Maintenance of Depression.

The reactive effect on mood of self-monitoring pleasant and unpleasant events was assessed. Forty-five females spent 28 days monitoring in one of four conditions: (a) pleasant events, (b) unpleasant events, (c) both, and (d) no monitoring. Motor activity level (pedometer recordings) and mood were also assessed daily. Class of event monitored was not found to influence mood. Correlations between mood and both pleasant and unpleasant events were found even with activity level partialed out. Implications for self-monitoring assessment in depression therapy programs and for models of depression are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Study of Electromagnetic Radiation of Corona Discharge Near 500-Kv Electric Installations

Data on the spectral composition and intensity of electromagnetic radiation of corona discharge are obtained in an experimental study performed on the outdoor switchgear of the Shagol 500-kV substation of the Chelyabinsk Enterprise of Trunk Transmission Grids and under a 500-kV Shagol – Kozyrevo overhead transmission line. The electromagnetic environment on the territory of the 500-kV outdoor switchgear is shown to be determined by narrow-band radiations (harmonics of the frequency of electric supply) and wide-band radiations due to corona discharges of high-voltage sources. This means that the personnel experience the action of a commercial-frequency electric field and electromagnetic radiation of a quite wide range, which is not allowed for by the existing guidelines. It is recommended to continue the study in cooperation with medical institutions in order to create guidelines that would allow for the joint action of commercial-frequency electric field and electromagnetic radiation and for the voltage in the line, the current load, the meteorological situation, and other factors.     

Raising the Reliability of Overhead Transmission Lines under the Action of Atmospheric Loads

Problems of reliability of overhead transmission lines (OTL) under the action of atmospheric loads are considered. It is assumed that the integral distribution function of, for example, ice loads, obtained from data of weather stations is a random statistical function that characterizes the frequency of an event (specific ice load) at a point (weather station area). The general population of statistical data is the most reliable base for analysis. Since the atmospheric loads are distributed in space and act on spatially distributed OTL systems, it is recommended to evaluate the proof load and the yearly reliability of OTL in terms of one integral statistical function composed of annual load maxima measured by weather stations located closest to the annual extremum of the ice load on a territory possessing common features (flat-bottom land, low land, elevation) that range within no more than 150 m with respect to the altitude. It is suggested that the Methodological Recommendations on Zoning of Atmospheric Loads on OTL Systems should be updated with allowance for the obtained data.     

Bayesian spatial and ecological models for small-area accident and injury analysis

In this article, recently developed Bayesian spatial and ecological regression models are applied to analyse small-area variation in accident and injury. This study serves to demonstrate how Bayesian modelling techniques can be implemented to assess potential risk factors measured at group (e.g. area) level. Presented here is a unified modelling framework that enables thorough investigations into associations between injury rates and regional characteristics, residual variation and spatial autocorrelation. Using hospital separation data for 83 local health areas in British Columbia (BC), Canada, in 1990–1999, we explore and examine ecological/contextual determinants of motor vehicle accident injury (MVAI) among male children and youth aged 0–24 and for those of six age groups (<1, 1–4, 5–9, 10–14, 15–19 and 20–24). Eighteen local health area characteristics are studied. They include a broad spectrum of socio-economic indicators, residential environment indicators (roads and parks), medical services availability and utilisation, population health, proportion of recent immigrants, crime rates, rates of speeding charge and rates of seatbelt violation. Our study indicates a large regional variation in MVAI in males aged 0–24 in British Columbia, Canada, in 1990–1999, and that adjusting for appropriate risk factors eliminates nearly all the variation observed. Socio-economic influence on MVAI was profoundly apparent in young males of all ages with the injury being more common in communities of lower socio-economic status. High adult male crime rates were significantly associated with high injury rates of boys aged 1–14. Seatbelt violations and excess speeding charges were found to be positively associated with the injury rates of young men aged 20–24. This and similar ecological studies shed light on reasons for regional variations in accident occurrence as well as in the resulting injuries and hospital utilisation. Thereby they are potentially useful in identifying priority areas for injury/accident prevention and in informing regional health planning and policy development.     

A restatement and test of Schlosberg's theory of emotion with two kinds of subjects from Greece.

Schlosberg's dimensional theory of emotion, including the dimension of tension-sleep, is tested to compare results obtained previously with American college students with those obtained in this study using Greek Ss. 15 Greek villagers and 15 college students in Athens comprised the 2 experimental groups which differed from each other in educational level and in lifetime movie attendance. The data indicate that Schlosberg's conclusions are now valid for non-Western groups as well as Western. Furthermore an emotion solid can be plotted from data collected by making use of Schlosberg's procedure, but the shape of the solid is not the same as that previously presented by Schlosberg. 18 references. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Chwa & Hakimi故障模型方程诊断的理论基础

针对基于对称比较的系统级故障模型———Chwa&Hakimi模型 ,建立起“方程诊断”的有关概念 ,把该模型等价地转换为一个方程 (或方程组 )。对于一类特殊的Chwa&Hakimi模型找到了求全体相容故障模式的具体算法 ,该算法为寻求一般情形下Chwa&Hakimi模型的全体相容故障模式奠定了理论基础和算法基础。     

Difference estimators of quantiles in finite populations

This paper deals with the inference of finite populations quantiles by using auxiliary information. The population information considered on the proposed estimatiors is a population quantile of the auxiliary variable with the same order as that of the quantile of the main variable to be estimated. A simulation study based on three real finite populations is performed and comparisons of the proposed estimators with other common estimators for quantile estimation are carried out.