资源储量估算垂直纵投影图上是否要画坐标线探讨   总被引：1，自引：0，他引：1  

雷明选  ;惠伟光  ;夏元鹏  ;魏明非  ;段续省  ;赵国富 《陕西地质》2014,(1):100-106

根据数学推导:当矿体(层)为非直立、非正东正西、正南正北倾向时,在垂直纵投影图上X、Y轴坐标投影线均是倾斜线。因此,在矿体(层)纵投影图上强调画坐标线,且将纵投影图上的坐标投影线均表示为铅直线值得商榷。  相似文献   

It’s not what you eat but how and that you eat: Social media,counter-discourses and disciplined ingestion among amateur competitive eaters     

《Geoforum》2017

This article interrogates how social media can provide a platform for contesting dominant discourses. It does so through the lens of competitive eating, demonstrating that amateur competitive eaters use social media sites to challenge and subvert mass media representations of their sport while concomitantly upholding normative notions of healthy eating and bodies. Competitors consider themselves to be skilful athletes that discipline and train their bodies to eat. They regard their eating practices, which are often depicted in the mass media as uncontrolled and gluttonous, as controlled ingestion, and present an alternative perspective of their ‘sport’ – a perspective that stresses health, physical expertise and a fit, trained body over voracity and insatiability. Social media acts as a ‘precipitating agency’ for the creation of these alternative definitions of disciplined eating, as well as the construction of new digital eating identities. Instead of focusing on the food being ingested and the ‘Carnivalesque’ practice of competitive eating, we draw attention to the performers’ voices and the ways they attend to the mechanics of gurgitation, including methods of chewing, swallowing and stomach stretching, and their ability to manage, regulate and operate ingestivity. As hegemonic discourses align the notion of ‘good eating’ to discipline, order and restraint, competitive eating is thus revealed to be a practice that mirrors and appropriates, yet also ultimately reproduces, conventional narratives. Social media is, in turn, shown to be a political tool for counter-discursive practices that are produced in dialogue with, and concomitantly uphold and contest, normative discourses of mass media.  相似文献   

Thermodynamics of rotating bodies     

G. Neugebauer 《Astronomische Nachrichten》1990,311(5):270-270

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新疆阿希金矿控矿因素三维定量分析与提取     

林玉婷  毛先成  刘晓霞  等 《江苏地质》2016,40(3):477-485

新疆阿希金矿自20世纪90年代投产至今,地表矿、浅部矿已开采殆尽。采用三维空间分析方法提取控矿因素并进行成矿预测是发现深部隐伏矿体的一条有效途径。通过阿希金地质体三维建模,采用距离场分析、地质界面坡度分析以及地质界面趋势-起伏分析方法,提取了控矿主断裂面距离场、主断裂面坡度、主断裂面趋势-起伏、管道相距离场、管道相趋势-起伏5个控矿因素,并通过散点图对矿化指标与控矿因素的关联关系进行分析,得到各个因素的矿化富集空间,提取出成矿有利部位。分析结果可为阿希金矿的深部隐伏矿体三维预测提供成矿信息支持。  相似文献