oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2016 ( 30 )

2015 ( 620 )

2014 ( 619 )

2013 ( 596 )

自定义范围…

匹配条件: “禹 聪” ,找到相关结果约7374条。
列表显示的所有文章,均可免费获取
第1页/共7374条
每页显示
无箔二极管结构设计研究
海军,程念安,陶祖
强激光与粒子束 , 1996,
Abstract: ?用数值计算方法研究了无箔二极管中几何结构参量对束流的影响,得出了无箔二极管结构参数选择的部分规律,同时又结合实际给出了一个无箔二级管模型的最佳组合参数。
Distributed Network Risk Assessment Method Based on Attack Graph
基于攻击图的分布式网络风险评估方法

方 明,徐开勇,杨天池,孟繁蔚,
计算机科学 , 2013,
Abstract: Evaluating risk effectively, selecting effective defence measures and defending information threats actively are the key points of resolving security problems of information system. Based on the actual requirements and status of risk assessment of information security, we integrated attack graph to apply it in studying risk assessment of information security. Firstly, focused on the uncertainty and complexity of risk assessment of information security, we integrated the technology of vulnerabilities associated with to apply it in studying risk assessment. On the other hand,since the attack path described by attack graph model is suited for the quantity data processing, and poor to the qualitative analysis, and risk is uncertain, we quantized the risk factors by the probability of attack path forming proposed in this dissertation, pre-treated the probability of atom attack, and proposed a risk assessment method based on attack graph model. The method takes full advantage of computing power of each host in the network,greatly shortens the attack graph generation time.
三氯乙烯和四氯乙烯在土壤和地下水中的污染及修复技术
张凤君,王斯佳,马慧,,
科技导报 , 2012, DOI: 10.3981/j.issn.1000-7857.2012.18.010
Abstract: 三氯乙烯和四氯乙烯在工农业生产中被广泛使用,由于其不合理的处置和相对持久性特征,使其成为地下水和土壤中分布最为广泛的污染物之一。因其具有挥发性、毒性和致癌性,受到了国内外的广泛关注。通过查阅国内外资料,本文较为系统地总结了三氯乙烯和四氯乙烯污染的来源、危害和污染现状,述评了修复三氯乙烯和四氯乙烯污染的物理方法、化学方法和生物方法,其中物理方法包括曝气法和活性炭吸附法等,化学方法包括化学氧化法和化学还原法等,生物方法包括微生物修复技术和植物修复技术。同时对三氯乙烯和四氯乙烯的污染修复技术的发展趋势进行了展望,认为微生物修复技术、纳米双金属颗粒技术和光催化氧化技术具有很好的应用前景,建议加强这三项技术的研究和应用。
啮齿动物食性研究的意义及方法评述
雍仲,,张美文**,王勇,李波
生态学杂志 , 2011,
Abstract: ?啮齿动物的食性是种群生态学的重要组成部分,也是制定鼠害防治策略的常用参考指标。现在已有多种方便适用的方法对其进行研究,国内外学者已在相关领域取得大量研究成果。本文对啮齿动物食性的各种研究方法进行了总结和整理,同时对近40年来国内外的部分相关研究成果进行了综述,分析该研究领域的前景,旨在为今后的研究提供更多思路。
基于攻击图的分布式网络风险评估方法
方 明,徐开勇,杨天池,孟繁蔚,
计算机科学 , 2013,
Abstract: 对信息系统进行有效的风险评估,选择有效的防范措施,主动防御信息威胁,是解决信息系统安全问题的关键所在。将攻击图模型应用于信息安全的风险评佑。首先针对信息安全风险评佑的不确定性和复杂性,将脆弱点关联技术用于风险评估。其次,针对攻击图所描述的攻击路径对于定量指标的分析缺乏相应的处理能力,而风险因素的指标值具有很大的不确定性等问题,采用攻击路径形成概率对信息安全的风险因素的指标进行量化,对原子攻击成功概率进行预处理,提出了基于攻击图模型的分布式风险评佑方法。该方法充分利用网络系统中各个主机的计算能力,极大地缩短了攻击图生成时间。
《阿房宫赋》的体裁语言特色及对后世文学的影响
Language Characteristics and Genre of E Pang Gong Fu and Its Influence on Chinese Literature of Later Generations
 [PDF]


Chinese Traditional Culture (CnC) , 2015, DOI: 10.12677/CnC.2015.33006
Abstract:
《阿房宫赋》是晚唐文人杜牧的作品,作成于唐敬宗宝历元年(公元825年)。这是一篇形式艺术与人文思想俱佳的作品。它甚至得到了“古来之赋,此为第一”的崇高评价。本文将引该赋中的字、句、段落以及古今学者观点以讨论《阿房宫赋》的体裁语言特色及《阿房宫赋》对后世文学的影响。
E Pang Gong Fu was written by Du Mu in the 1st year of Bao Li period of the Tang dynasty (A.D. 825). It is excellent in both language and thought. It had been rated as the best essay in the history of Chinese literature. Here we cited the words, sentences, paragraphs in the E Pang Gong Fu and the perspectives of previous scholars to discuss the language characteristics and the influence of this essay on Chinese literature of later generations.

试析包容性增长视角下的城市贫困解决之道
Solutions to Urban Poverty from the Perspective of the Inclusive Growth
 [PDF]

, 杨蓓蕾
Modern Management (MM) , 2011, DOI: 10.12677/mm.2011.14052
Abstract: 伴随着市场经济的高速发展而来的城市贫困,是一个需要长期关注与治理的社会问题。本文基于包容性增长的视角,首先分析了我国城市贫困人口的规模、构成和城市贫困的成因,然后在分析我国城市现有增长方式与减贫措施存在的问题及根源的基础上,提出了实施可持续的经济发展模式、推行机会平等的制度建设、构建福利普惠的保障体系等一系列城市贫困问题的解决之道。
Along with the rapid economic development, urban poverty is the outcome of the market economy. Moreover, it is also a social issue that needs a long-term concern and governance. Based on the inclusive growth theory, this paper gives a detailed description of the size and composition of the urban poor, as well as the close analysis for the root of the issue. It also puts forward a series of urban poverty solutions, like the sustainable economic development, equal-opportunity institution building, and welfare-sharing security system and so on.
洞庭湖区黑线姬鼠食性调查
雍仲,张美文,,王勇,李波,朱俊霞,杨玉超,徐正刚
动物学杂志 , 2012,
Abstract: 于2009年4月至2011年6月,在洞庭湖区湖滩、滨湖农田、防洪堤坝3种生境中捕捉黑线姬鼠(Apodemusagrarius)223只,观察胃内容物,分析了洞庭湖区黑线姬鼠的食性。结果表明:洞庭湖区3种生境中黑线姬鼠的食物组成都以植物种子为主,总计达(66.55±2.37)%,其次为植物茎、叶,其比例为(19.01±2.13)%,植物根所占比例为(8.27±1.05)%,动物性食物为(6.05±0.97)%。但黑线姬鼠的食物组成会随着不同生境、季节而有一定的变化。种子资源相对较少的季节和生境,相应的黑线姬鼠的食物组成中的种子所占比例就会较低。同一生境中,幼年鼠和亚成年鼠的食物组成与成年鼠、老年鼠区别较大,孕期雌鼠与同季节、同生境的非孕期雌鼠相比也有较大差异。说明尽管黑线姬鼠以取食植物种子为主,但其食性会随着生境可获得资源的不同而有所调整。
DO浓度对间歇曝气单级自养脱氮系统N2O排放的影响
李震涛,,秦镕,李凯,方芳,陈猷鹏,郭劲松
环境工程学报 , 2014,
Abstract: 以单级自养脱氮系统为研究对象,采用有效容积为15L的SBBR反应器,系统进水NH4+-N浓度约为360mg/L,控制温度为(30±2)℃,采用间歇曝气方式运行,曝气段DO浓度从2.4~2.6mg/L逐渐下降到0.9~1.1mg/L,研究了单级自养脱氮系统的脱氮性能与N2O排放情况.结果表明,反应器曝气段DO浓度从2.4~2.6mg/L下降到0.9~1.1mg/L,系统TN去除率均达到80%,但在相同运行时间内的TN去除率依次降低,NH4+-N平均反应速率从0.19mg/(L·min)降低至0.05mg/(L·min),NO3--N累计产生量稳定于14.9~16.5mg/L,NO2--N浓度在反应器内未产生明显的积累.随着曝气段DO浓度的下降,最大N2O释放速率逐渐降低,N2O累计释放量从73.8mg下降到61.0mg,N2O转化率介于2.4%~2.9%.
“增量利益做文章”的经济法思考
Thinking of “Make an Issue of Incremental Interest” in Economic Law
 [PDF]


Open Journal of Legal Science (OJLS) , 2014, DOI: 10.12677/OJLS.2014.24006
Abstract:
“增量利益做文章”是新一轮利益格局改革中至关重要的方面。具有私有财产属性的存量利益“神圣不可侵犯”,对其“做文章”没有正当性。在社会化大生产中已经形成了人与人之间“合作创造–竞争实现–共同分享”的增量利益关系。在劳动力权的范畴下,人们合作创造的增量利益,必然要求“共同分享”,在增量利益上“做文章”便具有可行性。在增量利益上做经济法的“文章”,就是要在微观经济法上保障个人的“同创共享”公平,在宏观经济法上提升国家的“国际竞争”优势。
Make an “issue” of incremental benefits is an essential part of the new round benefits pattern. In civil laws, owing to stock of interests has the attribute of private property, and it’s inviolable. So it’s improper to make an “issue” of it. But incremental benefits is created by people in cooperation and accomplished by competition, under the request of labor right; it has to be mutually-shared. Incremental benefits relationship formed in the socialized mass production with its common property determined by its production, so we have the necessity and possibility to make an “issue” about incremental benefits. To guarantee the personal justice of “getting what you have done paid” and the advantage of national “international competition”, we have to make an “issue” of incre-mental benefits.

第1页/共7374条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.