2-D dopant profiling in VLSI devices using dopant-selectiveetching: an atomic force microscopy study

We report a detailed mapping of a 2-D dopant profile on a fully processed industrial sample with large dynamic range and high spatial resolution by utilizing a dopant-selective etching process and Atomic Force Microscopy. The experimental results show excellent agreement with those obtained from SRP and SIMS as corroborative methods. We also discuss the most critical factors which influence the applicability, reproducibility, and reliability of this method     

Reduced trials and reliability of visual-acuity thresholds obtained by the method of constant stimuli.

To determine the effect of a reduction in trials per stimulus upon reliability of visual-acuity thresholds computed by the method of constant stimuli, visual-acuity thresholds were determined for 15 Ss, using a Landolt ring. Thresholds were computed using 5 stimulus values and 5, 10, 20, 30, 40, and 50 presentations per stimulus. Retest reliabilities of .92 and higher were obtained for as few as 10 trials per stimulus. It is concluded that "1… . classical… investigators probably tended to utilize more judgments than are necessary… 2… . for purposes of estimating absolute thresholds, the Müller-Urban constant method with five stimulus sizes appears to yield satisfactorily reliable thresholds… when as few as 10 trials per stimulus and 4-choice response categories are used." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Personnel selection and the prediction of error.

Summarizes a few trends in current personnel selection research and presents the rationale for a prediction model, taking advantage of the concept of under- and overpredictability. A noncognitive predictor of predictability was developed, using 224 male and female clerical workers, and used to subgroup a cross-validation sample of 110 Ss into underpredictables, accurately predictables, and overpredictables. Product-moment correlations between the unweighted sum of 6 cognitive predictors (subtests on the Purdue Clerical Adaptability Test) and a criterion measure of overall job performance were .26, .48, and .40 for the 3 subgroups, respectively. This compared favorably with a correlation of .25 before subgrouping and .34, for the 6 cognitive predictors and 2 noncognitive predictor scales (used to develop the predictor of predictability). (15 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Distortion of drivers' estimates of automobile speed as a function of speed adaptation.

10 male undergraduate drivers made 4 estimates of 40 mph speed after varying amounts of exposure to an adapting speed of 70 mph. The influence of these amounts of exposure to the adapting speed on speed judgments was studied, and a significant (p     

Farm technical efficiency under a tradable milk quota system

This paper incorporates the milk quota system into technical efficiency analysis of dairy farms in England and Wales. Our approach accounts for milk quota trade, allowing an investigation of the relationship between the way in which milk quota market is used by farmers and technical efficiency. In addition, several explanatory variables for inefficiency were used. Results obtained from a Bayesian stochastic frontier analysis show that the way in which farmers use the milk quota market is linked to farm efficiency. Other aspects such as environmental payments received by the farmer are linked to inefficiency.     

Industrial psychology in the aircraft industry.

"The objectives of the present study were to get an indication of (a) the degree to which industrial psychologists and their activities have been accepted in the aircraft industry and (b) some of the factors related to this acceptance." "A questionnaire was mailed to 160 personnel executives in plants manufacturing products for the aircraft industry." Inferences are drawn regarding evolving trends, and inferences are drawn which "can be generalized to all the plants in the industry." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A comparison of two methods of measuring the attention-drawing power of magazine advertisements.

A total of 154 Ss viewed under tachistoscopic exposure the 45 pairs of 10 ads, and indicated which ad of each pair they would look at again. The mean number of preferences were correlated with two eye-camera measures (number of first looks and number of seconds spent looking.) The reliability of the paired-comparison tachistoscopic method was .99; it correlated .86 and .99 with the eye measures. "In situations where eye-movement photography could be used… the results… indicate that a considerable saving of time and energy can be effected by use of a… tachistoscopic presentation." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Prevalence of Toxoplasma gondii in Canadian market-age pigs

Triacylglycerol lipase (L3) was purified from Aspergillus oryzae RIB128 by ammonium sulfate fractionation, acetone precipitation, anion-exchange chromatography, and gel filtration. The purified enzyme was formed from a glycoprotein and a monomeric protein with molecular masses of 25 and 29 kDa, by SDS-PAGE and gel filtration, respectively. The optimum pH at 40 degrees C was 5.5 and the optimum temperature at pH 5.5 was 40 degrees C. The enzyme was stable between a pH range of 4.0-7.5 at 30 degrees C for 24 h, and at up to 30 degrees C at pH 5.5 for 1 h. Heavy metal ions, detergents, DFP, and DEP strongly inhibited the enzyme activity. The lipase hydrolyzed not only triacylglycerols but also monoacylglycerols and diacylglycerols. The enzyme had higher specificity toward triacylglycerols of middle-chain saturated fatty acids than short-chain or long-chain fatty acids. The enzyme had 1,3-positional specificity. The N-terminal amino acid sequence of the enzyme was not significantly similar to that of other lipases with published sequences.