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41.
为充分利用有限的铅锌资源,稳定铅锌供矿品位,降低生产成本,提高矿山经济效益,经过多年配矿实践,总结出一个普通的稳定供矿品位技术管理模式即回采作业地质指导→现场矿石管理(井下出矿管理+配矿)→稳定供矿品位,此管理模式具有一定的推广应用价值.  相似文献   
42.
The world is inherently meaningful for us, i.e. we perceive the world in terms of what we can do with it, and by physically interacting with it we access this meaning and express the meaning. We believe that this is the core reason and foundation for turning to movement-based interaction. ‘Interaction creates meaning’ does not only hold for users during interaction but also for designers when generating ideas and developing concepts. Therefore, we postulate that if one truly likes to design for movement-based interaction, one has to be or become an expert in movement, not just theoretically, by imagination or on paper, but by doing and experiencing while designing. In order to do so, we believe that designers need design tools, techniques, knowledge, awareness and skills that support their search for expressive, rich behaviour. Our search for this support resulted in several methods, tools and knowledge that help designers exploring, visualising and reflecting on interactions. Our developed methods and tools such as the Design Movement approach with its choreography of interaction, gestural design tools, interactive installations and interactive tangible sketching, have not only supported and inspired designers to design for movement-based interaction, but also resulted in surprising, fresh designs in comparison with the limited scope of rather uniform and traditional electronic consumer products. This paper discusses the possibilities and limitations of our approach.  相似文献   
43.
Burnout is generally defined as a state of severe exhaustion. So far, research has predominantly focused on relatively mild burnout in employees able to work despite their complaints. This study examines energy depletion in clinical burnout (e.g., the severest cases on extended sick leave) by comparing the diurnal patterns of fatigue and exhaustion with those of healthy individuals. Sixty clinically burned-out and 40 healthy participants kept an electronic diary for 14 days, 7 times a day, yielding a total of 8,116 diary entries. This study shows that burned-out individuals typically suffer continuously from a severe fatigue throughout the day. The resulting flattened diurnal cycles mark a stable exhaustion that is uncommon in healthy persons. The current results provide novel support for the existence of severe energy erosion in clinical burnout. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
44.
Lena Neij   《Energy Policy》2008,36(6):2200-2211
Technology foresight studies have become an important tool in identifying realistic ways of reducing the impact of modern energy systems on the climate and the environment. Studies on the future cost development of advanced energy technologies are of special interest. One approach widely adopted for the analysis of future cost is the experience curve approach. The question is, however, how robust this approach is, and which experience curves should be used in energy foresight analysis. This paper presents an analytical framework for the analysis of future cost development of new energy technologies for electricity generation; the analytical framework is based on an assessment of available experience curves, complemented with bottom-up analysis of sources of cost reductions and, for some technologies, judgmental expert assessments of long-term development paths. The results of these three methods agree in most cases, i.e. the cost (price) reductions described by the experience curves match the incremental cost reduction described in the bottom-up analysis and the judgmental expert assessments. For some technologies, the bottom-up analysis confirms large uncertainties in future cost development not captured by the experience curves. Experience curves with a learning rate ranging from 0% to 20% are suggested for the analysis of future cost development.  相似文献   
45.
High crude oil prices, uncertainties about the consequences of climate change and the eventual decline of conventional oil production raise the issue of alternative fuels, such as non-conventional oil and biofuels. This paper describes a simple probabilistic model of the costs of non-conventional oil, including the role of learning-by-doing in driving down costs. This forward-looking analysis quantifies the effects of both learning and production constraints on the costs of supplying bitumen, which can then be upgraded into synthetic crude oil, a substitute to conventional oil. The results show large uncertainties in the future costs of supplying bitumen from Canadian oil sands deposits, with a 90% confidence interval of $7–12 in 2030, and $6–15 in 2060 (2005 US$). The influence of each parameter on the supply costs is examined, with the minimum supply cost, the learning rate (LR), and the depletion curve exponent having the largest influence. Over time, the influence of the LR on the supply costs decreases, while the influence of the depletion curve exponent increases.  相似文献   
46.
近年来,世界各国及地区老龄化进 程进一步加快,各界学者基于此纷纷展开应 对老龄化问题的理论与实证研究。中国是世 界上老龄人口最多的国家,其中大陆地区将 于2021年起正式步入加速老龄化阶段,并将 于2027年进入老龄社会。在诸多城市公共服 务系统中,交通系统较早面临老龄化影响, 然而中国大陆对于改善老年人出行的理论与 实践研究明显不足,适老出行设施配置与服 务供给严重短缺、相关专项规划和保障政策 长期滞后。基于大陆现阶段适老交通问题, 通过深入探讨我国台湾地区、新加坡以及日 本适老交通的经验,总结了包括完善相关政 策法规、加强公交系统建设、改善慢行出行 环境等启示性经验与措施,为更好应对我国 加速老龄化现状以及老龄化社会适老交通 提供思路。  相似文献   
47.
文化生态与建筑地域性在概念上 具有很大的关联性,建筑是整体区域文化 系统中的具体文化要素,而文化生态与地域 性的本质含义是一致的。由此可以使论文通 过文化生态学整体与要素关系的理论分析 北欧木建筑的特征与规律,旨在更好的理解 和借鉴其地域创作的成功因素。作为地域整 体文化的具体要素和表现载体,北欧木建 筑充分体现了平实、自然和高艺术品味的特 征,与区域文化整体特征形成呼应。并通过 把握切入点、突出主特征和保持高水准的 建筑创作策略,形成卓越的地域建筑景观, 有效反推动了区域整体文化特色的发展。  相似文献   
48.
As the number and complexities of green building developments are mainly driven by market demands, understanding of end-user behaviors towards their development eventually should play a crucial role on determining their successes. However, very few studies have been attempted to explore end-user behaviors towards green building development. This study successfully applied discrete choice experiments to reveal whether residents with green experience will have different preference and willingness-to-pay values for enhancements on various aspects of environmental performance in green buildings. Generally, both green and conventional residents had strong preferences and were willing to pay more for improving various aspects of environmental performance in green residential developments. They are found to be willing to pay more for energy conservation, than indoor air quality improvement, noise level reduction, landscape area enlargement, or water conservation. No significant differences are found in the preferences between green and conventional residents for energy conservation, indoor air quality improvement, indoor noise reduction, or water conservation, However, green residents were found to be willing to pay significantly less than the conventional residents for enlarging the landscape area within a residential development, despite it was perceived by green residents as one of the major elements that differentiate a green from a conventional development.  相似文献   
49.
吉志伟 《华中建筑》2010,28(6):43-45
该文通过对乾久美子的几个住宅案例的读解和分析,展现其设计过程中对设计条件的关注以及善于从看起来混乱的条件中寻找和总结设计的秩序,还有那在建筑空间设计中创造诗化体验的设计手法。  相似文献   
50.
张德鑫  邢世雄 《辐射防护》1996,16(4):271-277
本文以CFBR-Ⅱ快中子脉冲反应堆为例,依据初步的剂量监测结果和运行经验,讨论了在此类快脉冲堆运行中所遇到的主要辐射防护问题。  相似文献   
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