检索结果-南通市图书馆

identification of a Linear, Time-Varying System Using the Time-Varying Higher-Order Statistics

在线全文

cnki会议

学校读者我要写书评

暂无评论

Identification of a Linear, Time-Varying System Using the Ti...

2002年第6届信号处理国际会议

作者： Abdullah i.Al-shoshan CEN Dept. CCISKing Sand University P.O.Box 51178riyadh 11543Saudi Arabia

＜正＞ in this paper, two algorithms are proposed to identify linear, time-varying （LTV） systems and model non-stationary signals. The first one is based on the time-varying cumulants （TVC）;and the second one applies the time-varying sum-of-pseudo cumulants （TVSPC）. We also have shown that if the output of the LTV system is corrupted by stationary/non-stationary noise with symmetric distribution, the time-varying coefficients of the system can be identified using the time-varying sum-of-cumulants and sum-of-pseudo cumulants algorithms. Some LTV system identification and non-stationary signal modeling examples were given, using the above algorithms.

关键词： System identification evolutionary spectrum evolutionary bispectrum Linear time-varying systems time-varying autocorrelation time-varying cumulants time-varying sum-of-cumulants.

High Efficiency Coking Wastewater Treatment Process

在线全文

cnki会议

学校读者我要写书评

暂无评论

High Efficiency Coking Wastewater Treatment Process

第十届中国钢铁年会暨第六届宝钢学术年会

作者： Cheng Chu-i Chen Yanmin Engineer New Materials R＆D Dept. R＆D Division China Steel Corporation

Over 85% of COD in CSC coke-oven wastewater is removed by the conventional activated sludge system. in order to prevent the exceed quantity of incoming coke-oven wastewater that caused system upset, CSC has built a membrane bioreactor（MBR） to increase the capacity of the wastewater treatment system. The MBR is able to adapt unexpected high influent quantity and/or contaminant concentrations. The overall COD removal efficiency of coke oven wastewater treatment plant has been increased from 88% to 93%. in addition, CSC is planning to revamp the existing aeration tanks into a MBBR nitrogen removal process to meet the future ammonia standard of 20mg/L. The R＆D department has established the start-up strategies and the upset recovery plans based on the pilot study in the field. Preliminary pilot results show that phenolics, thiocyanate and cyanate will certainly inhibit nitrification. Moreover, the overall ratio of ammonia to alkalinity（as Ca CO3） in the start-up period of shall be 1:9, which is higher than the theoretical value of 1:4. This suggests that autotrophic bacteria such as thiocyanate-degrading bacteria existing in the activated sludge would consume the alkalinity as a carbon source for growth. Furthermore, with the application of carriers in the nitrification tank, the biofilm on the carriers can increase 20% of ammonia conversion rate.

关键词： coke-oven wastewater membrane bioreactor moving bed biofilm reactor(MBBR)

iconograf i a e identidad nacional. Las monedas y billetes chilenos durante el siglo XX

在线全文

cnki会议

学校读者我要写书评

暂无评论

Iconograf i a e identidad nacional. Las monedas y billetes c...

国际钱币与银行博物馆委员会第9届年会

作者： Juan Manuel Mart i nez

＜正＞ Elmetodo iconografico se ha convertido en un sistema eficaz para dar cuenta de los contextos historicosysimbolicos de epocas determinadas. A traves del estudio iconografico de las colecciones de monedas y billetes delMuseo Historico Nacional,podemos entender el proceso de una busqueda de la identidad nacional, procesorelacionado con la consolidacion de los aparatos de produccion y el establecimiento de un sistema democraticomoderno.

关键词：

Dedifferentiated fat cells:A cell source for regenerative medicine

在线全文

cnki会议

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2015年第10期7卷 1202-1214页

作者： Medet Jumabay Kristina i Bostrom Division of Cardiology David Geffen School of Medicine at UCLA the Molecular Biology institute at UCLA

The identification of an ideal cell source for tissue regeneration remains a challenge in the stem cell field. The ability of progeny cells to differentiate into other cell types is important for the processes of tissue reconstruction and tissue engineering and has clinical, biochemical or molecular implications. The adaptation of stem cells from adipose tissue for use in regenerative medicine has created a new role for adipocytes. Mature adipocytes can easily be isolated from adipose cell suspensions and allowed to dedifferentiate into lipidfree multipotent cells, referred to as dedifferentiated fat(DFAT) cells. Compared to other adult stem cells, the DFAT cells have unique advantages in their abundance, ease of isolation and homogeneity. Under proper condition in vitro and in vivo, the DFAT cells have exhibited adipogenic, osteogenic, chondrogenic, cardiomyogenc, angiogenic, myogenic, and neurogenic potentials. in this review, we first discuss the phenomena of dedifferentiation and transdifferentiation of cells, and then dedifferentiation of adipocytes in particular. Understanding the dedifferentiation process itself may contribute to our knowledge of normal growth processes, as well as mechanisms of disease. Second, we highlight new developments in DFAT cell culture and summarize the current understanding of DFAT cell properties. The unique features of DFAT cells are promising for clinical applications such as tissue regeneration.

关键词： Adipocytes Dedifferentiated fat cells Adult stem cells Pluripotent stem cells Differentiation

ROLE OF VOCATiONAL ASSOCiATiONS iN LiFE LONG LEARNiNG shOWN ON EXAMPLE OF CROATiAN MAiNTENANCE SOCiETY AND OF EUROPEAN FEDERATiON OF NATiONAL MAiNTENANCE SOCiETY

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

ROLE OF VOCATIONAL ASSOCIATIONS IN LIFE LONG LEARNING SHOWN ...

第四届世界维修大会

作者： SAMO ULAGA MLADEN JAKOVi University of Maribor Faculty of Mechanical Engineering

Strong development of technologies and the process of globalization are causing constant changes in maintenance activities. in order to keep track of changes and fulfil user expectations, it is necessary to go through continuous education–"life long learning". The need to always acquire knowledge brings us to continuously discover its missing pieces and makes us search for knowledge sources. A significant role in this process is played by national maintenance associations and EFNMS （European Federation of National Maintenance Societies）–supreme European maintenance association.

关键词： maintenance life long learning EFNMS competences.

在线全文

cnki会议

学校读者我要写书评

暂无评论

民族间的贡奉关系

世界民族 1990年第4期 28-32页

作者： A.i.伯希茨汤大华

“贡奉”(tribute)和“贡奉关系”(tribute reiations)这两个概念,虽然经常出现在历史学和民族学的出版物中,但在理论上对它们的研究相对说来并不全面,而且概念的使用含义也是多种多样的。历史学家认为贡奉是对被征服者的征用,也就是奴... 详细信息

“贡奉”(tribute)和“贡奉关系”(tribute reiations)这两个概念,虽然经常出现在历史学和民族学的出版物中,但在理论上对它们的研究相对说来并不全面,而且概念的使用含义也是多种多样的。历史学家认为贡奉是对被征服者的征用,也就是奴隶制社会和封建社会里直接税的早期形式。历史学家的主要分岐在于贡奉是否只是指偶然的(不固定的)税或者还可指有规律的(固定的)税。而在另一方面。

关键词：生产方式历史学家剥削方式民族学封建社会游牧民族早期形式原始公社制部落出版物

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

针对攻击性儿童读者的童话疗法个案研究

图书馆杂志 2022年第9期41卷 85-94,65页

作者：蔡培炎于鸿雁 Makysh i.V. 聊城大学传媒技术学院山东聊城252003 白俄罗斯明斯克第一儿童图书馆明斯克220050

童话凭借着趣味的表现形式、丰富的人文内涵、深远的教育功能被广泛应用于心理预防、诊断、治疗中。为了更好地探索童话在治疗攻击性行为方面的效用,以一名攻击性儿童读者为案例,在综合研究对象各项资料的基础上,立足童话疗法心理作用... 详细信息

童话凭借着趣味的表现形式、丰富的人文内涵、深远的教育功能被广泛应用于心理预防、诊断、治疗中。为了更好地探索童话在治疗攻击性行为方面的效用,以一名攻击性儿童读者为案例,在综合研究对象各项资料的基础上,立足童话疗法心理作用机制精心设计并实施童话治疗方案。通过对比儿童读者治疗前后的行为表明,童话疗法对儿童攻击性行为具有较好的治疗效果。此研究不仅对童话疗法在临床的作用进行了一次验证,同时也为今后我国公共图书馆开展儿童心理健康服务工作提供了实务经验。

关键词：童话疗法图书馆攻击性行为

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

冷战后的世界体系

世界社会科学 1993年第8期 3-6+20页

作者： i.沃勒斯坦 ,王宏周

导论1945年以后时代的各种确定因素今天已经看不到了,特别是就两个方面而论:一是美国作为最有效的生产者和最繁荣的国家,它曾在资本主义世界经济中处于统治地位,但是今天,这样的情况已经消失了;二是形成国家间相互关系之基础的美苏全面... 详细信息

导论1945年以后时代的各种确定因素今天已经看不到了,特别是就两个方面而论:一是美国作为最有效的生产者和最繁荣的国家,它曾在资本主义世界经济中处于统治地位,但是今天,这样的情况已经消失了;二是形成国家间相互关系之基础的美苏全面对抗的“冷战”局面已经化为乌有,的确,苏联已经不复存在。为了认识由此而产生的各种预兆,历史上有三个相关的时代值得予以考虑:1945—1990年美国称霸的时代;1789—1989年自由主义作为资

关键词：自由主义欧洲美国美利坚合众国北美洲威尔逊主义政治资本主义世界经济列宁主义思想体系社会福利国家资本主义制度

QT-GWAS:A novel method for unveiling biosynthetic loci affecting qualitative metabolic traits

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2023年第7期16卷 1212-1227页

作者： Marlies Brouckaert Meng Peng RenéHofer lias El Houari Chiarina Darrah Veronique Storme Yvan Saeys Ruben Vanholme Geert Goeminne Vitaliy i.Timokhin John Ralph Kris Morreel Wout Boerjan Ghent University Department of Plant Biotechnology and Bioinformatics9000 GhentBelgium ViB Center for Plant Systems Biology 9052 GhentBelgium Ghent University Department of Applied MathematicsComputer Science and Statistics9000 GhentBelgium ViB Center for inflammation Research 9052 GhentBelgium viB Metabolomics Core 9052 GhentBelgium Department of Biochemistry and US Department of Energy Great Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin-MadisonMadisonWI53706USA Ghent University Department of Applied MathematicsComputer Science and StatisticsGhentBelgium ViB Center for inflammation Research GhentBelgium BioNTech SE MainzRhineland-PalatinateGermany Eunomia Research&Consulting BristolUK ViB Agro-incubator NeveleBelgium Research institute for Chromatography KortrijkBelgium

Although the plant kingdom provides an enormous diversity of metabolites with potentially beneficial applications for humankind,a large fraction of these metabolites and their biosynthetic pathways remain *** metabolite structures and their biosynthetic pathways is key to gaining biological understanding andto allow metabolic *** orderto retrieve novel biosynthetic genes involved in specialized metabolism,we developed a novel untargeted method designated as qualitative trait GWAs(QT-GWAS)that subjects qualitative metabolic traits to a genome-wide association study,while the conventional metabolite GWAS(mGWAS)mainly considers the quantitative variation of *** a proof of the validity of QT-GWAS,23 and 15of the retrieved associations identified in Arabidopsis thaliana by QTGWAS and mGWAS,respectively,were supported by previous ***,seven genemetabolite associations retrieved by QT-GWAS were confirmed in this study through reverse genetics combined with metabolomics and/or in vitro enzyme *** such,we established that CYTOCHROME P450706A5(CYP706A5)is involved in the biosynthesis of chroman derivatives,UDP-GLYCOSYLTRANSFERASE 76C3(UGT76C3)is able tohexosylate guanine in vitro and in planta,and SULFOTRANSFERASE 202B1(SULT202B1)catalyzes the sulfation of neolignans in ***,our study demonstrates that the untargeted QT-GWAS method can retrieve valid gene-metabolite associations at the level of enzyme-encoding genes,even new associations that cannot be found by the conventional mGwAs,providing a new approach for dissecting qualitative metabolic traits.

关键词： qualitative method proof