37,223 research outputs found
Bai pin pu wang luo zhong de jing ji xue
No full textLuo, Yuan.Thesis Ph.D. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 273-283).Abstracts also in Chinese.Title from PDF title page (viewed on 01, November, 2016).Luo, Yuan
Frequency domain iterative feedforward/feedback tuning for MIMO ANVC
No full textA new iterative feedback/feed-forward tuning (IFFT) method is presented for multiple-input multiple-output (MIMO) control systems that relies on efficient computation of the negative gradient of the controller cost function in the frequency domain. The iterative method is using only one experiment per iteration and it is therefore suitable for realtime implementation for periodic adjustment of the controller. The primary target application area of the presented method is self-tuning feedback control in active noise and vibration control (ANVC)
Faculty Speaker: Reference and Information Service in a Nutshell with Dr. Lili Luo
No full textIn November 2012, Dr. Lili Luo spoke with SJSU ASIS&T about the evolving nature of reference service. What skills does the new librarian at the information desk need, and how are libraries integrating emerging technologies into expand, improve, and promote reference services?https://scholarworks.sjsu.edu/sjsuasist/1001/thumbnail.jp
Cortinarius jiaoheensis T. Bau & Y. Luo 2021, sp. nov.
No full textCortinarius jiaoheensis T. Bau & Y. Luo sp. nov. (Figs.2–4) MycoBank number:— MB838067 Diagnosis:—Basidiomata small. Pileus 6–12 mm diam, at first conical later almost plane with a prominent umbo, surface completely covered by woolly, whitish squamules. Lamellae emarginate, leather brown(6E6). Stipe slender, cylindrical, surface covered by white fibrils, greyish brown underneath, with rich white mycelium at the base. Universal veil white, forming zones on the stipe. Odor in context indistinct, not observed in lamellae. Taste somewhat spicy. Basidiospores 7.8–9.2 × 5.8–6.8 μm, broadly ellipsoid to somewhat obovoid ellipsoid, light brown (6D8) to rust brown (6E8), verrucose. Basidia with (2) 4 sterigmata. Lamellae margin with sterile cells. Etymology:—‘jiaoheensis’ refers to its occurrence in Jiaohe County, Jilin Province, China. Holotype:— CHINA. Jilin Province: Shansong ridge, Jiaohe County, Jilin City, 43°55′19″N, 127°05′17″E, elev. 483 m, Tolgor Bau, 3 September 2018 (HMJAU56920!). Description:— Basidiomata small. Pileus 6–12 mm diam, conical when young, later almost applanate to applanate with a prominent umbo, margin undulating; margin initially incurved, then slightly applanate to sometimes upturned; surface greyish brown (5D3–5E3) but completely covered by woolly, greyish to whitish squamules making the overall appearance pale, squamules flattened to slightly erect, dense at centre, becoming sparser and extending to the edge of the pileus. Lamellae moderately broad, with three lamellulae, light brown (6D6) when young, later leather brown (6E6), margin uneven, L=23–28, I=1–3. Stipe 17–26 mm long, 1–2 mm thick, central, cylindrical and hollow, equal in width, fragile, greyish brown (5E3), surface covered with white fibrils, with copious white mycelium at the base. Universal veil white, forming zones on the stipe. Context thin, pale white (4A1) to yellowish grey (4B2), unchanging upon cutting. Odor in context indistinct, not observed in lamellae. Taste slightly spicy. Basidiospores 7.8–9.2 × 5.8–6.8 μm (n=20), Q=1.23–1.50, Qav=1.37, broadly ellipsoid to somewhat obovoidellipsoid, light brown (6D8) to rust brown (6E8), verrucose. Basidia 24.3–29.2 × 9.7–11.7 μm, clavate, thin-walled, with two or four sterigmata, colorless to sometimes yellowish. Lamella margin with sterile cells, 19.5–27.3 × 7.8–9.8 μm, clavate, colorless. Pileipellis an epicutis of hyphae 6–13 μm wide, cylindrical, colorless to sometimes yellowish, some encrusted; hypoderm well developed, elements 15–25 μm wide, thin-walled, hyaline, subcellular; clamp connections present. Habitat:—Scattered in broadleaved forests near Quercus mongolica, fruiting in autumn. Known distribution:— Jilin Province, China. Additional material examined:— CHINA. Jilin Province: Shansong ridge, Jiaohe County, Jilin City, 43°55′19″N, 127°05′17″E, elev. 483 m, Tolgor Bau, 3 September 2018, HMJAU56920.Published as part of Luo, Ying & Bau, Tolgor, 2021, Cortinarius jiaoheensis (Cortinariaceae), a new species of Cortinarius subgenus Telamonia section Flexipedes, from northeast China, pp. 113-121 in Phytotaxa 494 (1) on pages 117-119, DOI: 10.11646/phytotaxa.494.1.7, http://zenodo.org/record/542335
Mixing and entrainment of transitional noncircular buoyant reactive plumes
No full textThree-dimensional spatial direct numerical simulation is used to investigate the evolution of reactive plumes established on non-circularsources. Simulations are performed for three cases: a rectangular plumewith an aspect ratio of 2:1, a square plume, and the square plume in acorner configuration. Buoyancy-induced large scale vortical structuresevolve spatially in the flow field. A stronger tendency of transition toturbulence is observed for the free rectangular plume than the freesquare case due to the aspect ratio effect. Dynamics of the cornersquare plume differs significantly from the corresponding free case dueto the enhanced mixing by the side-wall effects. A turbulent inertialsubrange has been observed for the free rectangular and corner squareplumes. Mean flow properties are also calculated. The study showssignificant effects of source geometry and side-wall boundary on theflow transition and entrainment of reactive plumes
Esempio di rappresentazione del sé in Lu Ling 路翎, Luo Dadou de yisheng 罗大斗的一生 (La vita di Luo Dadou)
No full textIn the story Luo Dadou’s life (Luo Dadou de yisheng 罗大斗的一生), Lu Ling 路翎 (1923-1994) gives shape to the deepness of human psyche and stresses the suffering of the Self of his age by giving a brilliant emphasis to human individuality. The author succeeds in doing so by creating an amazing psychological characterization of the main character, both by means of words and by means of grammatical structures. By applying Denton’s categories for the study of the Self in modern Chinese literature, I analysed Lu Ling’s short story from the Freudian and Kleinian psychodynamic perspective, so to demonstrate how Lu Ling enters his characters’ minds and wonderfully recreates the psychological dynamics inside and between them
Design of split-inductors applied in positive output super lift luo-converters
No full textAs the demand of the modern electronic devices and appliances are getting higher, the role of the converters with higher output and efficiency become wider for different industries. It has been the role of engineers to explore the converter topology to provide higher output voltage in simple design with less cost. There are quite a number of different ways of lifting output voltage in converter topology.The method that the author will be introducing is called “Split- Inductors Method”, where the
output voltage is totally dependent on the number of inductors used in the converter design. The
report will include a detail discussion about design and results of” split-inductors topology”,
applied to “Positive Output Super Lift Luo Converter” using software simulations and hardware
experiments.Bachelor of Engineerin
DNS and LES of Turbulence-Combustion Interactions
No full textOne of the most successful applications of direct numerical simulation (DNS) has been in the study of turbulent combustion. This is due to the ability of DNS to resolve the full range of time and length scales in which turbulence and chemical reactions interact with each other. One prominent example is the turbulent diffusion flame, in which turbulent mixing determines the main characters of combustion while chemical reactions strongly influence turbulence. The
present chapter focuses on turbulence-combustion interactions in variable-density flows, in which turbulent fluctuations in pressure, density and other variables play important roles. The phenomena of combustion-generated turbulence, decreased Reynolds stress anisotropy, counter-gradient diffusion, and combustion-generated
buoyancy can all be attributed to the coupling between turbulence and chemical heat release through density and pressure fluctuations. In contrast, the application of large eddy simulation (LES) in turbulent combustion has been slow and controversial, but carries a huge potential. The subgrid-scale modeling difficulties are not only related to the treatment of the highly non-linear chemical source term, but also
connected to the handling of extra subgrid terms in the energy and species transport equations, as compared with the case of non-reacting flow. The existence of counter-gradient diffusion, and the significance of viscous diffusion and dissipation in combusting flow present particular challenges. Despite all the difficulties, LES
has been successfully used in simulating turbulent reacting flows under comparable conditions as found in experiments, subject to certain limitations. One example is the simulation of buoyant reacting plumes in which flow transition, intermittency and fully-developed turbulence co-exist
Global well-posedness of the 3D Navier–Stokes equations perturbed by a deterministic vector field
No full textFlandoli F, Hofmanová M, Luo D, Nilssen T. Global well-posedness of the 3D Navier–Stokes equations perturbed by a deterministic vector field . Annals of Applied Probability. 2022;32(4):2568-2586.We are concerned with the problem of global well-posedness of the 3D Navier-Stokes equations on the torus with unitary viscosity. While a full answer to this question seems to be out of reach of the current techniques, we establish a regularization by a deterministic vector field. More precisely, we consider the vorticity form of the system perturbed by an additional transport type term. Such a perturbation conserves the enstrophy and therefore a priori it does not imply any smoothing. Our main result is a construction of a deterministic vector field v = v(t, x) which provides the desired regularization of the system and yields global well-posedness for large initial data outside arbitrary small sets. The proof relies on probabilistic arguments developed by Flandoli and Luo, tools from rough path theory by Hofmanova, Leahy and Nilssen and a new Wong-Zakai approximation result, which itself combines probabilistic and rough path techniques
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