1,743 research outputs found
Ultra-high speed 1μm V-gate GaAs MESFET with cutoff frequency up to 47GHz by 2D simulation
No full textA GSMBE grown GaInP/GaAs narrow base DHBT exhibiting N-shape negative differential resistance with variable peak-to-valley current ratio up to 1?107 at room temperature
No full textSuperdeformed triaxial band in Lu
No full textA new rotational band has been observed in Lu by Sm
(F,4n)reaction at the HI-13 tandem accelerator of CIAE in Beijing. The high
spin transition energies of the new band are almost identical to the triaxial
superdeformed bands recently discovered in Lu and Lu. This new band
is predicted as a triaxial superdeformed band by total routhian surface
calculations
A connectionist and multivariate approach to science maps: the SOM, clustering and MDS applied to library and information science research
No full textThe visualization of scientific field structures is a classic of scientometric studies. This paper presents a domain analysis of the library and information science discipline based on author co-citation analysis (ACA) and journal cocitation analysis (JCA). The techniques used for map construction are the self-organizing map (SOM) neural algorithm, Ward’s clustering method and multidimensional scaling (MDS). The results of this study are compared with similar research developed by Howard White and Katherine McCain [1]. The methodologies used allow us to confirm that the subject domains identified in this paper are, as well,
present in our study for the corresponding period. The appearance of studies pertaining to library science reveals the relationship of this realm with information science. Especially significant is the presence of the management on the journal maps. From a methodological standpoint, meanwhile, we would agree with those authors who consider MDS, the SOM and clustering as complementary methods that provide representations of the same reality from different analytical points of view. Even so, the MDS representation is the one offering greater possibilities for the structural representation of the clusters in a set of variables
A Connectionist and Multivariate Approach to Science Maps: Som, Clustering and Mds Applied to Library & Information Science Research.
No full textThe visualization of scientific field structures is a classic of scientometric studies. This paper presents a domain analysis of the library and information science discipline based on author co-citation analysis (ACA) and journal cocitation analysis (JCA). The techniques used for map construction are the self-organizing map (SOM) neural
algorithm, Ward’s clustering method and multidimensional
scaling (MDS). The results of this study are compared with
similar research developed by Howard White and Katherine
McCain [1]. The methodologies used allow us to confirm that
the subject domains identified in this paper are, as well,
present in our study for the corresponding period. The appearance of studies pertaining to library science reveals
the relationship of this realm with information science.
Especially significant is the presence of the management on the journal maps. From a methodological standpoint, meanwhile, we would agree with those authors who consider
MDS, the SOM and clustering as complementary methods
that provide representations of the same reality from different analytical points of view. Even so, the MDS representation is the one offering greater possibilities for the structural representation of the clusters in a set of variables
Modelling and analysis of fine sediment transport in wave-current bottom boundary layer
No full textThe evolution and utilization of estuarine and coastal regions are greatly restricted by sediment problems. This thesis aims to better understand fine sediment transport under combined action of waves and currents, especially in the wave-current bottom boundary layer (BBL). Field observations, experimental data analysis, theoretical analysis and numerical models are employed. Silt-dominated sediments are sensitive to flow dynamics and the suspended sediment concentration (SSC) increase rapidly under strong flow dynamics. This research unveils several fundamental aspects of silty sediment, i.e., the criterion of the incipient motion, the SSC profiles and their time-averaged parameterization in wave-dominated conditions. An expression for sediment incipient motion is proposed for silt-sand sediment under combined wave and current conditions. A process based intra-wave 1DV model for flow-sediment dynamics near the bed is developed in combined wave-current conditions. The high concentration layer (HCL) was simulated and sensitivity analysis was carried out by the 1DV model on factors that impact the SSC in the HCL.Finally, based on the 1DV model, the formulations of the mean SSC profile of silt-sand sediments in wave conditions were proposed. The developed approaches are expected to be applied in engineering practice and further simulation.Dissertation submitted in fulfillment of the requirements of the Board for Doctorates of Delft University of Technology and of the Academic Board of IHE Delft Institute for Water Education.Coastal Engineerin
Environment-insensitive two-photon ratiometric probe for in cellulo quantitative measurement of hydrogen peroxide
No full textThe quantitative analysis of a biological analyte directly through fluorescence imaging is essential in biomedical sciences but remains as a challenge owing to the environment-sensitive nature of fluorescence intensity. We show that a fluorescent hydrogen peroxide probe based on an in cellulo super-bright benzothiazolyl-benzocoumarin dye of which emission properties are insensitive to environmental changes offers a reliable and practical means for the quantitative analysis of hydrogen peroxide in cells and tissues directly through ratiometric imaging both under one-photon and two-photon excitation conditions. Different cellular hydrogen peroxide concentrations were determined for several cell lines and also for tumour and normal tissues. © 2021 The Author(s)11Nscopu
On Concept of "Shue" (Emptiness) in Lieh-Tzu
No full textThis paper divided into four parts: (i)preface; (ii)the conception of "shue" in Lieh-Tzu; (iii)The conception in Toaistic school in the Pre-Chin; (iv) conclusion. The author deals with this concept based upon the recent studies-the book of Lieh-Tzu is not an apocrypha. Lieh-Tzu conceived that the saint is the highest stage of human life. The issue is how do one achieve it. His answer is "shue." It has two denotations-"kung-fu" (drill) and the mental stage. "Shue" is not only in the realm of language and conceptual, but also in that of practice. The method of practice is by intellectual reflection and meditation from the concentration of consciousness to that of spirit. Finally, it can unify his spirit with nothing. Nothing is "tao" from the Taoistic point of view. Lieh-Tzu followed the method of the ancient Taoism in practice. But author contends that the method is derived from Lao-Tzu's "shue" of imitating "heaven" which is different from Kuan-Yin-Tzu's in-terpretation of it, that is, "chin" (stillness) of imitating "earth." From historical viewpoint, Lieh-Tzu dealed with the notion of "shue" in order to provide an answer to the meaninglessness of life of the people and disturbance of the society in the warring states period. The author believes that it is the right prescription for it
Internal and Crossover Interpretations as Two Fundamental Hermeneutic Prototypes of Interpreting Classic Chinese Writings: Taking the Book of Change (I Ching) as an Example
No full text中國經典詮釋傳統有沒有自己的特點？經筆者研究之後，感覺到傳統經學的實踐中確實有直釋與旁通二個基型，可惜沒有受到學者充分的注意。故本論文為了具體討論起見，特別以《易經》的詮釋為例，依以下各節：一、前言，二、對「中國經典詮釋基型」的界定，三、《易》籍著作的詮釋體式，四、直釋型詮釋的方法與問題，五、旁通型詮釋的方法與問題，六、結論，來論述。其中第四、五兩節又各立細目，詳細討論詮釋的方法與問題。中國經典的詮釋體式是依字－句－章－篇－卷逐次解釋而成立低層的訓詁、章句、注、箋、解、疏、說、傳，甚至更有不泥於文句，而依義理而成立高層的釋義、通釋、通義，乃至最高層的哲理詮釋。其詮釋可歸納成二個基型，即各經本身在歷代所表現的直釋詮釋與異經彼此互釋的旁通詮釋。在中國經典詮釋傳統中，此兩型詮釋之於經典正猶乾坤之於易，經典在詮釋中表現其生生不息的生命力。What characteristics the long-standing tradition of Chinese classics interpretation manifests? The author suggests that, though largely neglected, the interpretations of Chinese classics can be categorized into two prototypes. To bring these two prototypes into light, the author will analyze a variety of interpretations of The Book of Change (I Ching). In the first section, the author gives an overview of the issue. In section 2 and 3, the author defines the two prototypes at stake and investigates their relationships with various forms of interpretations of some selected texts in The Book of Change. The author then goes on to discuss the merits and costs of the two prototypes in section 4 and 5, before concluding in section 6. It will be argued that both internal interpretations—interpretations that seek internal coherence within a particular writing—and crossover interpretations—interpretations that seek overall coherence among several different but related writings—are flowers growing out of efforts to understand the philosophy of classic Chinese writings. They are fundamental to the everlasting life of the tradition of Chinese classics interpretation, just as as Qi?n and K?n are fundamental to the change of every entity
A Study on Man in Confuiu's Thought
No full textWhat is man? This is a perennial question in philosophy. The author has been interested in Confucius’ view concerning this question. The present paper is an attempt to explicate Confucius theory of man. It is divided into six sections: (1)human intellect (2)human nature (3)human mind (4)human person (5)historical personalities (6)human virtues. Confucius approach to the problem of man is philosophical, rather than scientific or religious. His basic view is that there is no fixed, unchanging essence of man, and that man’s essence is formed by his activities and deeds. In one word, man is what the does
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