1,750 research outputs found
Zinc 2-((2-(benzoimidazol-2-yl)quinolin-8-ylimino)methyl)phenolates : synthesis, characterization and photoluminescence behavior
A series of 2-(2-(1H-benzoimidazol-2-yl)quinolin-8-yliminomethyl)phenol derivatives and their zinc complexes (C1 – C5) were synthesized and fully characterized. The molecular structure of the representative complex C2 was determined by single crystal X-ray diffraction, which revealed that the zinc was five-coordinated with the tetra-dentate ligand and a methanol bound to the metal afford a distorted square-pyramidal geometry. The UV-Vis absorption and fluorescence spectra of the organic compounds and their zinc complexes were measured and investigated in various solvents such as methanol, THF, dichloromethane, and toluene; significant influences by solvents were observed on their luminescent properties; red-shifts for the zinc complexes were clearly observed in comparisons to the free organic compounds
A Wavelet Neural Network for SAR Image Segmentation
This paper proposes a wavelet neural network (WNN) for SAR image segmentation by combining the wavelet transform and an artificial neural network. The WNN combines the multiscale analysis ability of the wavelet transform and the classification capability of the artificial neural network by setting the wavelet function as the transfer function of the neural network. Several SAR images are segmented by the network whose transfer functions are the Morlet and Mexihat functions, respectively. The experimental results show the proposed method is very effective and accurate
Global versus Localized Generative Adversarial Nets
In this paper, we present a novel localized Generative Adversarial Net (GAN)
to learn on the manifold of real data. Compared with the classic GAN that {\em
globally} parameterizes a manifold, the Localized GAN (LGAN) uses local
coordinate charts to parameterize distinct local geometry of how data points
can transform at different locations on the manifold. Specifically, around each
point there exists a {\em local} generator that can produce data following
diverse patterns of transformations on the manifold. The locality nature of
LGAN enables local generators to adapt to and directly access the local
geometry without need to invert the generator in a global GAN. Furthermore, it
can prevent the manifold from being locally collapsed to a dimensionally
deficient tangent subspace by imposing an orthonormality prior between
tangents. This provides a geometric approach to alleviating mode collapse at
least locally on the manifold by imposing independence between data
transformations in different tangent directions. We will also demonstrate the
LGAN can be applied to train a robust classifier that prefers locally
consistent classification decisions on the manifold, and the resultant
regularizer is closely related with the Laplace-Beltrami operator. Our
experiments show that the proposed LGANs can not only produce diverse image
transformations, but also deliver superior classification performances
A Bridge Between Two Worlds: a Cultural Interpretation of Dragonwings
Living in the dual worlds of his life as a Chinese American and in places such as Chinatown, Laurence Yep felt that he was culturally alienated and that he did not have a culture of his own. With the driving wish to find out about Chinese culture―his culture, he finished his best known novel Dragonwings after six years of research on Chinese culture. Based on the true story of Fung Joe Guey, a Chinese American who built and flew an airplane in the Oakland hills in 1909, Dragonwings tells the story of Moon Shadow, who comes to San Francisco to join his unknown father, Windrider, who cherishes the dream of flying. To pursue the dream, Moon Shadow and his father have to move out of Chinatown. After enduring a sea of misunderstanding, cruelty and poverty, Windrider finally realizes his flying dream with the support and aid of his beloved son and his fellowmen, as well as his American friends. Trying to show the process from misinterpretation and misunderstanding to mutual understanding and the possibilities of cultural exchange and cultural fusion between two different cultures, we will discuss how the Chinese culture is rediscovered by a Chinese American and how cultural misunderstanding leads to an unbalanced world and how tolerance and understanding restore the world into a harmonious one. This paper attempts to demonstrate, through the analysis of Dragonwings, the author’s exploration of Chinese culture, cultural exchange and human nature transcending cultural differences. Key words: Dragonwings, Laurence Yep, cultural exchange Abstrait: En vivant dans le monde dual de sa vie comme Américain chinois et aux endroits comme la Cité chinoise, Laurence Yep trouve qu’il était aliéné culturellement et qu’il n’avait pas de culture de sa ville. Avec l’espoir violent à découvrir la culture chinoise----sa culture, il a achevé son roman bien connu Dragon-ailes après une recherche de six années sur la culture chinoise. Basé sur l’histoire vraie de Fung Joe Guey , un Américain Chinois qui a fabriqué et manié un avion dans les Montagnes Oakland en 1909, Dragon-ailes raconte le conte de Ombre de lune, qui vient à San Francisco pour rejoindre son père inconnu , Windrider, qui a le rêve de voler .Poursuivant le rêve, Ombre Lunaire et son père sont obligés de bouger de la Cité chinoise. Après avoir enduré une mer d’incompréhension , de cruauté et de pauvreté, Windrider a finalement réalizé son rêve de voler avec l’aide de son fils et ses compagnons, ainsi que ses amis américains. Essayant de montrer le processus de malinterprétation et de incompréhension à compréhension mutuelle et les possibilités d’échange et de fusion culturels entre deux cultures différentes, nous discuterons comment la culture chinoise est redécouverte par un Américian chinois et comment l’incompréhension culturelle conduit à un monde inégal et comment la tolérance et la compréhension reconstruisent le monde à celui d’harmonique. Ce papier tente de démontrer , à travers l’analyse de Dragon-ailes , l’exploration de l’auteur de la culture chinoise , de l’échange culturel et des différences transcendantes naturelles de la nature humaine. Mots clefs: Dragon-ailes, Laurence Yep, échange culture
Transport properties of dense deuterium-tritium plasmas
Consistent descriptions of the equation of states, and information about
transport coefficients of deuterium-tritium mixture are demonstrated through
quantum molecular dynamic (QMD) simulations (up to a density of 600 g/cm
and a temperature of eV). Diffusion coefficients and viscosity are
compared with one component plasma model in different regimes from the strong
coupled to the kinetic one. Electronic and radiative transport coefficients,
which are compared with models currently used in hydrodynamic simulations of
inertial confinement fusion, are evaluated up to 800 eV. The Lorentz number is
also discussed from the highly degenerate to the intermediate region.Comment: 4 pages, 3 figure
Interventional few-shot learning
Ministry of Education, Singapore under its Academic Research Funding Tier 1 and 2; Alibaba Innovative Research (AIR) programm
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