4,070 research outputs found
sj-docx-1-inq-10.1177_00469580221134431 – Supplemental material for Evaluation of Online Andrology Medical Services in Central Regions of China During the COVID-19 Pandemic: A Cross-Sectional Data Analysis Study
No full textSupplemental material, sj-docx-1-inq-10.1177_00469580221134431 for Evaluation of Online Andrology Medical Services in Central Regions of China During the COVID-19 Pandemic: A Cross-Sectional Data Analysis Study by Zhi Liu, Chunyu Zhang, Cong Luo, Junlin Ou, Ming Song, Lingxiao Yang, Xin Wang, Jinbo Chen, Guilin Wang and Tao Guo in INQUIRY: The Journal of Health Care Organization, Provision, and Financing</p
sj-docx-2-inq-10.1177_00469580221134431 – Supplemental material for Evaluation of Online Andrology Medical Services in Central Regions of China During the COVID-19 Pandemic: A Cross-Sectional Data Analysis Study
No full textSupplemental material, sj-docx-2-inq-10.1177_00469580221134431 for Evaluation of Online Andrology Medical Services in Central Regions of China During the COVID-19 Pandemic: A Cross-Sectional Data Analysis Study by Zhi Liu, Chunyu Zhang, Cong Luo, Junlin Ou, Ming Song, Lingxiao Yang, Xin Wang, Jinbo Chen, Guilin Wang and Tao Guo in INQUIRY: The Journal of Health Care Organization, Provision, and Financing</p
Robust Camera Pose Estimation via Consensus on Ray Bundle and Vector Field
No full textEstimating the camera pose requires point correspondences. However, in practice, correspondences are inevitably corrupted by outliers, which affects the pose estimation. We propose a general and accurate outlier removal strategy for robust camera pose estimation. The proposed strategy can detect outliers by leveraging the fact that only inliers comply with two effective consensuses, i.e., 3D ray bundle consensus and 2D vector field consensus. Our strategy has a nested structure. First, the outer module utilizes the 3D ray bundle consensus. We define the likelihood based on the probabilistic mixture model and maximize it by the expectation-maximization (EM) algorithm. The inlier probability of each correspondence and the camera pose are determined alternately. Second, the inner module exploits the 2D vector field consensus to refine the probabilities obtained by the outer module. The refinement based on the Bayesian rule facilitates the convergence of the outer module and improves the accuracy of the entire framework. Our strategy can be integrated into various existing camera pose estimation methods which are originally vulnerable to outliers. Experiments on both synthesized data and real images have shown that our approach outperforms state-of-the-art outlier rejection methods in terms of accuracy and robustness
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
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
Wu xian wang luo zhong de xing wei jing ji xue fen xi
No full textPh.D.The global mobile data traffic has been growing tremendously in the past few years. In order to alleviate the tension between the mobile data demand and the network capacity, the operator can either utilize the spectrum more efficiently, or flatten the demand curve through pricing. Motivated by some recent practices, this thesis focuses on two specific problems. First, we study the cognitive mobile virtual network operator’s spectrum investment problem. Second, we study the mobile network operator’s optimization problems and users’ behaviors in a mobile data trading market. To understand the decisionmakers’ realistic behaviors, our solutions to these two problems focus on not only classical economic perspectives, where decision makers are assumed to be fully-rational, but also behavioral economic perspectives, which captures the realistic human decision process on uncertainty.In the first part of the thesis, we study a cognitive mobile virtual network operator’s spectrum investment problem under spectrum supply uncertainty using prospect theory. We formulate a hybrid spectrum investment problem including spectrum sensing and leasing as a two-stage optimization problem, and compute the optimal sensing and leasing decisions. Our results show that compared with a fully-rational operator, both the risk-averse and risk-seeking operators achieve a smaller expected profit. On the other hand, a risk-averse operator can guarantee a larger minimum possible profit, while a risk-seeking operator can achieve a larger maximum possible profit.In the second part of the thesis, we first analyze the optimal trading strategy for a single user in the mobile data trading market under prospect theory, to understand the users’ realistic trading behaviors with risk preferences. Building upon our analysis, we design an algorithm to help estimate the user’s risk preference and provide trading recommendations dynamically, considering the latest market and usage information. We also study the operator’s optimal operation fee, and the scenarios under which it is beneficial for an operator to propose a mobile data trading market. Our results suggest an operator with a low initial market share to propose a data trading market.全球移動數據流量在過去幾年中大幅增長。為了緩解移動數據需求與網絡容量之間的緊張關係，運營商可以通過更有效地利用頻譜的方式，或者可以通過由定價來平坦化需求曲線的方式。本論文著重於研究兩類具體問題。一，認知移動網絡虛擬運營商的頻譜投資問題。二，移動網絡運營商在移動數據交易市場中的優化問題和用戶在移動數據交易市場中的行為。為了瞭解決策者的現實行為，我們的方法不僅側重於經典經濟學理論觀點，即決策者被認為是完全理性的，而且還包括行為經濟觀點，從而捕捉現實決策過程中面對不確定性時決策者的行為特徵。在論文的第一部分，我們使用前景理論研究了認知移動網絡虛擬運營商面對頻譜供應不確定性時的頻譜投資問題。我們建模了一個包括頻譜感知和頻譜租賃的兩階段混合頻譜投資問題，並計算出最優的頻譜感知和頻譜租賃的決策。我們的研究結果表明，與完全理性的運營商相比，風險厭惡和風險尋求型的運營商都會得到較小的預期利潤。另一方面，風險厭惡型的運營商可以保證更大的最小可能利潤，而風險尋求型的運營商可以獲得更大的最大可能利潤。在論文的第二部分，我們首先分析移動數據交易市場中單一用戶在前景理論下的最優交易策略，從而瞭解現實交易中，風險偏好對用戶行為的影響。基於我們的分析，我們設計了一種交易算法來幫助估計用戶的風險偏好，並基於最新的市場信息和用戶數據用量信息，提供動態交易建議。我們同時還研究運營商的最優運營費用的決策，以及使得運營商可以依靠推出移動數據交易市場而獲益的場景。研究結果表明，初始市場份額較低的運營商可以靠推出數據交易市場而獲益。Yu, Junlin.Thesis Ph.D. Chinese University of Hong Kong 2017.Includes bibliographical references (leaves 154-162).Abstracts also in Chinese.Title from PDF title page (viewed on 22, August, 2019).Yu, Junlin
Zhong guo fan long duan he bing shen cha de bi jiao yan jiu
No full textLuo, Yi.Thesis Ph.D. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 336-349).Abstracts also in Chinese.Title from PDF title page (viewed on 15, November, 2016).Luo, Yi
A Study on Luo Zhi Cheng\ue2s Historical narrative poems
No full textLuo Zhi Cheng is an important poet in the field of Taiwanese modern poetry, who is known for distinctive linguistic style and intense creative consciousness that are respected. Based on his powerful imagination and flourishing creativity as two primary advantages, through the mediation of poetry, prose, remarks, and commentaries, he maximally amplifies the implication of literature, and thereby composes himself and enriches the character. Distinguished from the majority of researchers focusing on Luo\ue2s lyric works, this study particularly found a writing context of \ue2avoidance of lyric sensibility\ue2 in Luo\ue2s poems, that is, his series of works historical themes in the form of long poems utilizing narrative skills to exhibit the remarkable consistency between the internality and the externality of the author.
\ue3\ue3This study conducted a comparative investigation of Luo\ue2s poetry work (The Book of Zhuzi) and prose works (Austral Court\ue2s Notandum and The Initiation of Civilization) to build a relatively more multi-faceted \ue2author\ue2s image of Luo Zhi Cheng\ue2 according to the writing of works of historical themes. Using the methodology of narratology, I departed from the internality of the text (the collection of poems) to identify how Luo forms the ideal spectrum of character by shaping historical persons; and meanwhile, I equally departed from the collections of prose to grasp the external information of the texts, and thereby clarified that Luo may treat \ue2writing, individual, and society\ue2 as a process of self-fulfillment. It is the two corresponding identities \ue2poet\ue2 and \ue2the intellectual\ue2 that are the mechanism of his constructing self-justification. Such investigation of the internality and the externality of text confirmed the complex relationships of the sustained \ue2opposition,\ue2 \ue2coexistence,\ue2 and \ue2conflict\ue2 between Luo and his works of historical themes
The role of three-dimensionality in the development of vortex breakdown in swirling flow
No full textDirect numerical simulations of three-dimensional compressible Navier-Stokes equations are conducted using high-order numerical methods in cylindrical coordinates. Aim of the work is to examine the effect of three-dimensionality in the dynamics of vortex breakdown in swirling jets within a specific range of Reynolds numbers. The main elements of vortex breakdown are revealed in our computations, and the interaction between three-dimensional helical instabilities and the axisymmetric process of breakdown is discussed. The results confirm a general tendency of swirling flows to burst into a sequence of bubbles when the Reynolds number is increased. Comparing axisymmetric and fully three-dimensional computations, it's observed the possibility that a single or double helical structure arising in linear regime can work to extract energy from the axisymmetric waves
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