110 research outputs found
ASP904444 Supplemental Material - Supplemental material for Rapid Screening of Thyroid Dysfunction Using Raman Spectroscopy Combined with an Improved Support Vector Machine
No full textSupplemental material, ASP904444 Supplemental Material for Rapid Screening of Thyroid Dysfunction Using Raman Spectroscopy Combined with an Improved Support Vector Machine by Dingding Wang, Jing Jiang, Jiaqing Mo, Jun Tang and Xiaoyi Lv in Applied Spectroscopy</p
The age of artificial intelligence: prosperity for all?
No full textauthors: Dr. Holger Becker, Prof. Chen Dingding, Prof. Qiu Zeqi, René Bormann ; contributors: Prof. Duan Weiwen, Prof. Tang Hao, Prof. Dr. Johanna Wenckebach, Dr. Nele Wulf, Xiao Jin
Silk Road Fashion, China. The City and a Gate, the Pass and a Road – Four components that make Luoyang the capital of the Silk Roads between 1st and 7th century AD. The year 2018
No full textIm Fokus unserer Forschungen zur Geschichte der alten Seidenstraßen standen vier Fundplätze innerhalb und im Umkreis der zentralchinesischen Stadt Luoyang: (1) die Paläste, Tempel und internationalen Märkte der Stadt Luoyang aus der Zeit der Östlichen Han- bis Nördlichen Wei-Dynastie (1.–6. Jh.) , (2) das Dingding-Stadttor aus der Sui- und Tang-Dynastie (gebaut 605), (3) das bisher einzige physisch erhaltene Straßensegment, der sog. Shihao-Abschnitt der alten Xiaohan-Route, und (4) die als Hangu-Pass bekannte Han-zeitliche Befestigungsanlage und Karawanserei Hangu-Pass (114 v. Chr. – 240 n. Chr.). Für das Funktionieren des überregionalen Seidenstraßenhandels hatten diese vier Orte eine Schlüsselbedeutung und belegen den Status des alten Luoyang als östlichsten Knotenpunkt des weitreichenden Handelsnetzwerks. Alle vier Fundplätze wurden national als große archäologische Entdeckungen Chinas und international mit dem Siegel des UNESCO-Weltkulturerbes ausgezeichnet. Durch den Bau von modernen Fundplatzmuseen sollen ihre Geschichten national und international verbreitet werden. Vor allem aber will man die heutige Stadt Luoyang als Industrie- und Handelszentrum dadurch stärken, dass man an ihre Blüte in historischen Zeiten erinnert. Wagenspuren und Fußabdrücke von Händlern und ihren Lastentieren lassen Erinnerungen an geschäftiges Treiben wieder aufleben. Im Wettbewerb mit der Stadt Xi’an (einst Chang’an) um den Status als „wahren“ östlichen Ausgangspunkt der Seidenstraßen ist das besonders wichtig. Als Teil einer globalen Geschichte über internationale Beziehungen und Austausch spielen die vier Fundplätze heute politisch und wirtschaftlich als Soft-Power eine große Bedeutung für den chinesischen Staat, insbesondere innerhalb der 2013 ins Leben gerufenen Belt-und-Road-Initiative
Flexible Gabor-Based Superpixel-Level Unsupervised LDA for Hyperspectral Image Classification
No full textHyperspectral images encompass abundant information and provide unique characteristics for material classification. However, the labeling of training samples can be challenging in hyperspectral image classification. To address this problem, this study proposes a framework named flexible Gabor-based superpixel-level unsupervised linear discriminant analysis (FG-SuULDA) to extract the most informative and discriminating features for classification. First, a number of 3-D flexible Gabor filters are rigorously designed using an asymmetric sinusoidal wave to sufficiently characterize the spatial-spectral structure in hyperspectral images. Then, an unsupervised linear discriminant analysis strategy guided by the entropy rate superpixel (ERS) segmentation algorithm, called SuULDA, is skillfully introduced to reduce the extracted large amount of FG features. The SuULDA method not only boosts the classification capability but also increases the peculiarity of features, with the aid of superpixel information. Finally, the achieved features are imported to the popular support vector machine classifier. The proposed FG-SuULDA framework is applied to four real hyperspectral image data sets, and the experiments constantly prove that our FG-SuULDA is superior to several state-of-the-art methods in both classification performance and computational efficiency, especially with scarce training samples. The codes of this work are available at http://jiasen.tech/papers/ for the sake of reproducibility.No Full Tex
Stitching Repair for Delaminated Carbon Fiber/Bismaleimide Composite Laminates
No full textDue to the excellent mechanical properties and heat resistance, bismaleimide matrix composite materials have been widely used in aircraft. However, they are susceptible to low-energy impacts, such as bird hits, gravel, tools falling, etc., which can easily result in delamination. The delamination can significantly reduce the compression performance of composites and become a potential hazard for aircraft in service. In this paper, a stitching method developed from the Z-pin manufacturing process was proposed to repair delaminated laminates. Firstly, the delaminated area was stitched by fiber bundles that were pre-impregnated with glue. Then, the fiber bundles threading through the laminate become the pins after the curing process, thus producing the bridging effect between delaminated layers. As a result, the in-plane compressive properties of the laminate are enhanced. The parameters, including the size, number, and position of the stitching hole, for the stitching repair were optimized, and the factors affecting the repair effect were discussed through both finite element analysis and experiments. The results showed that for a carbon fiber/bismaleimide composite plate with a circular delamination roughly 30 mm in diameter, the in-plane compressive strength can be recovered from 54.45% to 84.23% of the pristine plate, and the modulus was fully recovered
- …
