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Hades高可信架构中固定延迟分区实时调度 被引量:2
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作者 杨霞 熊光泽 +1 位作者 桑楠 张宁 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2009年第11期1682-1688,共7页
为了增强不同安全等级的复杂嵌入式安全关键系统的高可信能力,Hades架构以"时空隔离"思想和分区机制为基础,各分区分时共享系统物理资源.针对Hades中分区的实时调度问题,提出一种固定延迟分区调度模型,并采用优先级位图算法... 为了增强不同安全等级的复杂嵌入式安全关键系统的高可信能力,Hades架构以"时空隔离"思想和分区机制为基础,各分区分时共享系统物理资源.针对Hades中分区的实时调度问题,提出一种固定延迟分区调度模型,并采用优先级位图算法设计了分区级和任务级两级调度机制;为了保障分区中所有实时任务的可调度性,对分区中任务组采用单调速率调度和最早截止时间优先2种调度策略,并分别给出任务可调度条件.最后,通过仿真实验进一步验证了该调度模型的有效性. 展开更多
关键词 嵌入式安全关键系统 hades高可信软件架构 固定延迟分区调度模型 两级调度机制 可调度条件
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波兰HADES矿井生产监测系统
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作者 周建波 《煤矿机电》 北大核心 1989年第1期33-36,共4页
1983年,我矿从波兰EMAG公司引进HADES矿井生产监测系统(以下简称系统)。1985年3月份开始投入使用。现将对该系统的功能工作原理以及在使用中的一些体会。介绍如下: 一、系统的织成及功能该系统见图1可分为井上部分(主机柜部分)和井下部... 1983年,我矿从波兰EMAG公司引进HADES矿井生产监测系统(以下简称系统)。1985年3月份开始投入使用。现将对该系统的功能工作原理以及在使用中的一些体会。介绍如下: 一、系统的织成及功能该系统见图1可分为井上部分(主机柜部分)和井下部分(包括传感器和发射机NK) 展开更多
关键词 监测系统 hades 矿井
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Giorgio Vasari’s Mercury: God of Magic and Wisdom
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作者 Liana De Girolami Cheney 《Cultural and Religious Studies》 2019年第10期511-549,共39页
In 1555,assisted by Cristofano Gherardi,Il Doceno(1508-1556),Giorgio Vasari(1511-1574)designed and painted a mythological and cosmological theme in the Sala degli Elementi,an apartment of Cosimo I de’Medici(1519-1574... In 1555,assisted by Cristofano Gherardi,Il Doceno(1508-1556),Giorgio Vasari(1511-1574)designed and painted a mythological and cosmological theme in the Sala degli Elementi,an apartment of Cosimo I de’Medici(1519-1574),Duke of Florence,at the Palazzo Vecchio in Florence.The Apartment of the Elements is dedicated to the four elements(air,earth,fire,and water),which in antiquity were considered to be the basis of the material of the world.The four elements are personified as a history painting theme on the ceiling and the walls of the chamber.Accordingly,on the ceiling is the element of Air,personified by several events:Its center depicts Saturn Mutilating Heaven and surrounding this scene are The Chariots of the Sun and the Moon,the images of Day and Night,and the virtues of Peace,Fame,Justice,and Truth.On the walls of the chamber,there are personifications of the elements of Earth(north),Fire(east),and Water(south).The frescoes on the left hand wall relate to the element of Earth.In the center of the north wall,the first fruits of the Earth are offered to Saturn.1 On the adjacent wall,east wall,above the fireplace,are scenes relating to the element of Fire:Vulcan’s Forge is depicted in the center of wall.2 On the adjacent wall,south wall,the element of Water is symbolized with The Birth of Venus.3 On the window wall,west wall,are two large niches containing simulated sculptures of Hermes-Mercury and Hades-Pluto.These two images connect thematically with the wall decoration of the elements and the pantheon of the gods on the ceiling.This essay will focus only on the image of Hermes-Mercury.It consists of two parts:the stylistic impact of classical and Renaissance sources of this astral and pagan god in Vasari’s imagery,and the signification of the personification of Mercury associated and interconnected with Cosimo I de’Medici,Duke of Florence. 展开更多
关键词 Hermes/Mercury hades/Pluto MYTHOLOGY ASTROLOGY symbolism Palazzo Vecchio Sala degli Elementi classical and Renaissance traditions tarot cards NEOPLATONISM history painting
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英国集成式地下资产信息系统的发展历程
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作者 乌效鸣 张磊(译) 《非开挖技术》 2020年第4期1-6,共6页
在设计任何新的管道方案时,有关现有地下资产信息对于确保优化设计至关重要,尤其对于非开挖项目来说更是如此,因为在施工时可能无法确定对现有地下资产的损坏情况。随着英国对公用事业行业的放宽管制,以前只需要联系少数机构就可以获得... 在设计任何新的管道方案时,有关现有地下资产信息对于确保优化设计至关重要,尤其对于非开挖项目来说更是如此,因为在施工时可能无法确定对现有地下资产的损坏情况。随着英国对公用事业行业的放宽管制,以前只需要联系少数机构就可以获得有关地下资产信息,而现在可能超过100多家机构在该地区拥有地下资产需要考虑和整理细节,这是一项耗时且昂贵的业务。2006年启动了一个研究项目,研究如何整合各种数据库系统和结构。这导致2012年在苏格兰推出了一个基于网络的综合系统,即苏格兰保险库。这是非常成功的并且公用事业和公路界的所有成员都在使用这一方法,而且通过立法来支持数据的及时更新。在英国发展这种系统的问题较大。这些问题不是技术问题,而是组织和财务问题。考虑了一系列的融资模式同时建立了一些组织来推动这样一个系统,通过奋斗后却失败。在2018年,伦敦又一次尝试推出一个集成系统,名为Hades—公路资产数据交换系统。该系统试验成功,目前正在考虑数据及其流程所有权的选择。希望在本报告中成功汇报目前实施的情况。报告还非常成功地将苏格兰项目的技术和组织因素考虑到其间,这些因素是需要考虑的,以使其他国家了解地下管线资产时像在信息天堂一样的方便。 展开更多
关键词 地下资产信息 信息系统 hades架构
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Donghe Sandstone Subtle Reservoir Exploration and Development Technology in Hade 4 Oilfield 被引量:9
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作者 SunLongde ZhouXinyuan SongWenjie JiangTongwen ZhuWeihong YangPing NiuYujie DiHongli 《Petroleum Science》 SCIE CAS CSCD 2004年第2期35-43,共9页
Hade 4 oilfield is located on the Hadexun tectonic belt north of the Manjiaer depression in the Tarim basin, whose main target layer is the Donghe sandstone reservoir, with a burial depth over 5,000m and an amplitude ... Hade 4 oilfield is located on the Hadexun tectonic belt north of the Manjiaer depression in the Tarim basin, whose main target layer is the Donghe sandstone reservoir, with a burial depth over 5,000m and an amplitude below 34m, at the bottom of the Carboniferous. The Donghe sandstone reservoir consists of littoral facies deposited quartz sandstones of the transgressive system tract, overlapping northward and pinching out. Exploration and development confirms that water-oil contact tilts from the southeast to the northwest with a drop height of nearly 80m. The reservoir, under the control of both the stratigraphic overlap pinch-out and tectonism, is a typical subtle reservoir. The Donghe sandstone reservoir in Hade 4 oilfield also has the feature of a large oil-bearing area (over 130 km2 proved), a small thickness (average efficient thickness below 6m) and a low abundance (below 50 × 104t/km2). Moreover, above the target layer developed a set of igneous rocks with an uneven thickness in the Permian formation, thus causing a great difficulty in research of the velocity field. Considering these features, an combination mode of exploration and development is adopted, namely by way of whole deployment, step-by-step enforcement and rolling development with key problems to be tackled, in order to further deepen the understanding and enlarge the fruits of exploration and development. The paper technically focuses its study on the following four aspects concerning problem tackling. First, to strengthen the collecting, processing and explanation of seismic data, improve the resolution, accurately recognize the pinch-out line of the Donghe sandstone reservoir by combining the drilling materials in order to make sure its distribution law; second, to strengthen the research on velocity field, improve the accuracy of variable speed mapping, make corrections by the data from newly- drilled key wells and, as a result, the precision of tectonic description is greatly improved; third, to strengthen the research on sequence stratigraphy and make sure the distribution law of the Donghe sandstone; and fourth, with a step- by-step extrapolation method, to deepen the cognition of the leaning water-oil contact, and by combining the tectonic description and drilling results, to make sure little by little the law of change of the water-oil contact. The exploration and development of the Donghe sandstone subtle reservoir in Hade 4 oilfield is a gradually perfected process. From 1998 when it was discovered till now, the reservoir has managed to make a benign circle of exploration and development, in which its reserve has gradually been enlarged, its production scale increased, and, in a word, it has used techniques necessary for this subtle reservoir in the Tarim basin. 展开更多
关键词 Hade 4 oil field Donghe sandstone subtle reservoir seismic explanation tectonic description pinch-out line sequence stratigraphy water-oil contact
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沙特HADEED钢铁公司的新建扁平材生产线
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作者 F.Bayer J.Strasser H.Trenkler 《钢铁》 CAS CSCD 北大核心 2001年第5期35-38,共4页
由奥钢联工程技术公司 (VAI)为沙特 HADEED钢铁公司新建的 80万 t/ a扁平材生产线交钥匙工程已成功投产运行 ,将生产多种规格的热轧和冷轧普碳钢、结构钢和深冲钢 。
关键词 沙特HADEED钢铁公司 扁平材生产线 热轧 冷轧 热镀锌
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“妇女坐着为搭模斯哭泣”:希伯来宗教与两河流域之地府游 被引量:1
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作者 李炽昌 《基督教文化学刊》 CSSCI 2011年第1期3-25,共23页
古代两河流域掌管农作物及动物生长之神——"搭模斯"(Tammuz,苏美语为杜穆慈[Dumuzi]),在希伯来圣经里。
关键词 Mesopotamian RELIGION and MYTHOLOGY Inanna’s Descent into the Netherworld HEBREW Biblical Studies HEAVEN and hades
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