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人机显示/控制界面适配性综合评价指标和评价方法 总被引:2,自引:2,他引:2
通过对驾驶舱人机显示 /控制界面适配性指标影响因素、视觉信息流工效的测定与评估方法的研究 ,建立了一套视觉信息流工效综合评估系统研究体系 ;研究的初步结果主要有 ,飞机驾驶员视域中存在最佳、较好、极限工效区 ,并且振动、反射眩光、噪声、显示字符的形状 /颜色特征 /对比度 /显示方式等是影响信息获取工效的主要因素 ;飞机驾驶舱显示布局及显示方式应符合视觉工效学设计原则。 相似文献
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The implementation of groundwater remediation strategies in contaminated areas includes not only a cost-benefit analysis and an environmental risk assessment but also another type of study called compatibility analysis. A compatibility analysis targets the interactions between remediation technologies and site characteristics, such as the types of active contaminants and their concentrations, soil composition and geological features, etc. The purpose of this analysis is to identify the most compatible remediation plan for the contaminated site. In this paper, we introduce a decision support system for the prioritization of remediation plans based on their estimated compatibility index. As this model receives data in terms of linguistic judgments and experts' opinions, we use fuzzy sets theory to deal with these uncertainties. First, we break down the concept of compatibility into the measurable factors. Then by using a multiple-attribute decision-making (MADM) outline, we compute a factorial, regional and overall compatibility indicator for each plan. Finally, by comparing these generated indicators, we rank the remediation policies. 相似文献
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Assuming that a male’s genetic characteristics affect those of his offspring, extra-pair copulation has been hypothesized
to increase heterozygosity of the progeny—the “genetic compatibility” hypothesis—and the genetic diversity within litters—the
“genetic diversity” hypothesis. We tested these two hypotheses in the alpine marmot (Marmota marmota), a socially monogamous mammal showing a high rate of extra-pair paternity (EPP). In a first step, we tested the assumption
that a male’s genetic characteristics (heterozygosity and genetic similarity to the female) affect those of his offspring.
Genetic similarity between parents influenced offspring heterozygosity, offspring genetic similarity to their mother, and
litter genetic diversity. The father’s heterozygosity also influenced litter genetic diversity but did not affect offspring
heterozygosity. Hence, heterozygosity seems not to be heritable in the alpine marmot. In a second step, we compared genetic
characteristics of extra-pair young (EPY) and within-pair young (WPY). EPY were less genetically similar to their mother but
not more heterozygous than WPY. EPY siblings were also less genetically similar than their WPY half siblings. Finally, the
presence of EPY promoted genetic diversity within the litter. Thus, our data support both the “genetic compatibility” and
the “genetic diversity” hypotheses. We discuss further investigations needed to determine the primary causes of EPP in this
species. 相似文献
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Mining activities are compatible with other activities in space and time if they are developed together and adapted to each other. If permits are required for two projects that are not considered to be compatible, the authorities will be forced to decide which one has prevalence. In the event of conflict or dispute, it is always preferable to attempt to seek compatibility between projects rather than waste time, effort and money on contesting the prevalence decision, as costly and lengthy lawsuits will only delay the development of both projects, with the resulting loss of business opportunities. In this article, technical solutions designed to achieve mining compatibility with other projects are described in terms of benefits and synergies for the projects and benefits for the government that avoid complex decisions and proceedings and optimize revenues. 相似文献
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Postconsumer polyethylene terephthalate (PET)/polyolefin blends through reactive processing 总被引:1,自引:0,他引:1
Mauro?AgliettoEmail author Maria-Beatrice?Coltelli Stefania?Savi Francesco?Lochiatto Francesco?Ciardelli Maurizio?Giani 《Journal of Material Cycles and Waste Management》2004,6(1):13-19
Increasing awareness of environmental and energy problems has promoted greater governmental interest in selected waste collection and consequently has attracted the interest of several research groups to the challenge of converting recovered plastics into useful materials. The reactive blending of postconsumer polyethylene terephthalate (PET) with different polyolefins (PO) was studied in attempts to obtain a new material with enhanced properties with respect to the starting materials. The success of the project depends mainly on the possibility of obtaining a compatibilized blend between two starting polymers that, from chemical and thermomechanical viewpoints, are very different. This was approached by employing polyolefins bearing functional groups capable of specific interaction or chemical reaction with PET end groups. Ternary blends of very low density polyethylene (VLDPE)/PET/functionalized polyolefin (FPO) in a weight composition of 70/20/10 and binary blends of FPO/PET in a weight composition of 90/10 were prepared and studied to obtain reinforced polyolefin thermoplastic materials. Reactive blending was achieved in a Brabender Plastograph with a mixing chamber of 30 or 50cm3, at 250°C, and 40rpm for 10min. Differential scanning calorimetry, scanning electron microscopy, and tensile tests were used to investigate the phase behavior, the efficiency of compatibilization, and the mechanical properties of the blends. 相似文献
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层状无机物在聚合物基体中易团聚,限制了其在聚合物材料中的规模化应用。本工作通过将有机改性蒙脱土(OMMT)与一种具有超支化结构的磷氮大分子化合物HTPPP(以三嗪结构为基础,通过焦磷酸结构连接)在醇水体系中混合溶胀,再经过高温脱水,制备成HTPPP插层、剥离的OMMT成炭型有机大分子/层状无机物复合成炭剂(HTPPP-OMMT)。XRD测试表明层状结构的OMMT能够在HTPPP中被完全剥离。OMMT的复合降低了HTPPP的水溶性,并提高了其热稳定性。将有机/无机复合成炭剂HTPPP-OMMT作为单组分无卤膨胀阻燃剂应用于聚丙烯(PP),阻燃测试表明HTPPP-OMMT复合成炭剂的阻燃效率高于HTPPP。这是由于其在材料燃烧过程中能够催化形成更加致密的膨胀多孔炭层,而炭层在高温下的热氧稳定性更好。此外,有机/无机复合改善了HTPPP-OMMT在PP的相容性,能提高材料的力学和耐析出性能。 相似文献
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The number and size of infill oversized houses, or McMansions, has increased in the U.S. and the world. To maintain desirable neighborhood appearances, communities should know what constitutes “too big.” This paper reports six studies that used color simulations of blocks of houses to examine compatibility and visual appeal in relation to attributes of the infill house and its context. Following psychophysical findings, the relative size of the infill house should have larger effects on response than its actual size. The studies confirmed that the infill ratio had more weight than size for perceived compatibility. Compatibility did not always translate into visual appeal. For visual appeal, infill style had larger effects than did size or size ratio, height had larger effects than width, and, for larger sizes and ratios, infill ratio had larger effects than actual size. To maintain visual quality in relation to infill houses, communities should first seek an architecturally compatible style, and then try to control its relative size (the infill façade area). Tests of responses to real infill houses can show how well these findings generalize. 相似文献
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