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921.
The general problem of light scattering in turbid media has been studied often. Compared to the exact solution for plane‐parallel diffusers, the Kubelka and Munk solution appears as an approximation. The photon diffusion model is also an approximate solution restricted to the case of low light absorption, for which the prior work of Silvy has been ignored. It gives interesting relations between Kubelka‐Munk conventional parameters and the more intrinsic quantities related to the properties of the media introduced by the photon model. © 2003 Wiley Periodicals, Inc. Col Res Appl, 28, 227–228, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.10149 相似文献
922.
Saint-Aubin Jean; Klein Raymond M.; Roy-Charland Annie 《Canadian Metallurgical Quarterly》2003,29(6):1191
When participants search for a target letter while reading, they make more omissions if the target letter is embedded in frequently used words or in the most frequent meaning of a polysemic word. According to the processing time hypothesis, this occurs because familiar words and meanings are identified faster, leaving less time for letter identification. Contrary to the predictions of the processing time hypothesis, with a rapid serial visual presentation procedure, participants were slower at detecting target letters for more frequent words or the most frequent meaning of a word (Experiments 1 and 2) or at detecting the word itself instead of a target letter (Experiment 3). In Experiments 4 and 5, participants self-initiated the presentation of each word, and the same pattern of results was observed as in Experiments 1 and 3. Positive correlations were also found between omission rate and response latencies. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
923.
This paper presents an overview of the results obtained at the Industrial Materials Institute (IMI) on the numerical simulation of the gas‐assisted injection molding and co‐injection molding. For this work, the IMI's three‐dimensional (3D) finite element flow analysis code was used. Non‐Newtonian, non‐isothermal flow solutions are obtained by solving the momentum, mass and energy equations. Two additional transport equations are solved to track polymer/air and skin/core materials interfaces. Solutions are shown for different thin parts and then for thick three‐dimensional geometries. Different operating conditions are considered and the influence of various processing parameters is analyzed. 相似文献
924.
Although Canada's sexual assault laws have undergone considerable modification and revision since the late 1970s and early 1980s, it has only been within the past decade that a "rape shield" protection has applied to the complainant's prior sexual conduct with the defendant. Although the admission of evidence concerning the complainant's prior sexual conduct with the defendant now receives legislative protection, it can still, under some circumstances, be admitted at trial. Specifically, if the trial judge determines that the evidence pertaining to the complainant's prior sexual conduct with the defendant is of significant probative value to a fact at issue (other than the complainant's consent or credibility) and that this value is not outweighed by any potential prejudicial effects, it may be admitted at trial. Drawing on psychological research investigating the role played by complainant/defendant relational history in people's evaluations of sexual assault, the current article critically examines the potential impact that this evidence may have on jurors' decisions in sexual assault trials. This review suggests that significant dangers are associated with its introduction at trial and also includes a discussion of the legal implications of these research findings. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
925.
A self-constrained low-temperature-cofired ceramic (LTCC) system, composed of a low-fire La2 O3 –B2 O3 –CaO–Al2 O3 -based glass (LBG)+alumina (LBGA) and high-fire BaO–B2 O3 –SiO2 -based glass (BBSG)+alumina (BBSGA), has been developed. As the densification temperature range required for the LBGA is lower than that for the BBSGA, both systems densify and constrain alternatively during cofiring of a multilayer LBGA/BBSGA laminate. This results in the linear shrinkage of multilayer LBGA/BBSGA laminate taking place only in the Z direction with little shrinkage in the X – Y directions, exhibiting promising characteristics of self-constrained densification. 相似文献
926.
Tucker Joan S.; Orlando Maria; Elliott Marc N.; Klein David J. 《Canadian Metallurgical Quarterly》2006,25(6):715
Social control has the potential to encourage engagement in a healthy lifestyle, but its effectiveness may depend on the nature of the influence attempt. Participants (N = 282) described a situation in which someone attempted to influence their health-related behavior. Experiencing positive social control was associated with a greater tendency to change the behavior and less ignoring/doing nothing, whereas negative social control was associated with a lesser tendency to change the behavior and more hiding of unhealthy behavior. These associations could be accounted for by affective responses to the social control attempts. Results emphasize the need to better understand the regulatory influence of relationships on health behavior and the conditions under which social control is most likely to have health-promoting effects. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
927.
1. Introduction The requirement of minimal bottom coverageand thick sidewall coverage for PVD-based films forlow via resistance and improved stress migration isnot easy to achieve with traditional depositionmethods. Modern I-PVD techniques give high bot-tom coverage, due to the ionized component of thedeposition flux. Sidewall coverage tends to be low,which is mainly due to off-normal deposition fluxand a less than unity sticking coefficient. 相似文献
928.
This paper examines the optimal perfect hedging (super-replication) of an option by a cash-plus-riskless asset portfolio within the context of the binomial model. The cases discussed here were not covered by the earlier studies of Boyle and Vorst (1992) and Bensaid, Lesne, Pagès and Scheinkman (1992). It is argued that these cases are empirically important, and that there is some indication that they are encountered very often in practice in the Swiss options market. A new algorithm is developed to compute the option price lower bound (bid price) for such cases. It is then shown that, for most such cases, the portfolio hedging the short call when replication is not optimal coincides with the Merton (1973) lower bound. 相似文献
929.
Vincent Keryvin Marie-Laure Vaillant Tanguy Rouxel Marc Huger Thierry Gloriant Yoshihito Kawamura 《Intermetallics》2002,10(11-12)
An original in situ ultrasonic echography technique was used to study the thermal stability and crystallisation of a Zr55Cu30Al10Ni5 bulk metallic glass between RT and 630 °C. Changes in Young's modulus with temperature were reported allowing to study the supercooled-liquid state and the crystallisation process. Investigations of viscoelastic properties gave information on the correlation factor (hierarchically correlated motion theory) and three distinct crystallisation stages were observed. Their kinetics were studied using Voigt's and Reuss' approximations for a two-phase material and comparisons with the Johnson–Mehl–Avrami–Kolmogorov theory allowed us to consider a mixed surface/internal nucleation for the first stage and a surface nucleation for the two last stages. 相似文献
930.
A new case of insufficiency fracture in a patient with tabes dorsalis is reported. Whereas the osteoarthropathies and bone lesions due to tabes dorsalis are well known, only one other case responsible for bone loss has been reported in the medical literature. 相似文献