501 research outputs found
Cong dong li xue ti qu shuang xiang wang luo de lian tong xing
No full textLeung, Chung Yin = 從動力學提取雙向網絡的連通性 / 梁頌賢.Thesis Ph.D. Chinese University of Hong Kong 2014.Includes bibliographical references (leaves 111-117).Abstracts also in Chinese.Title from PDF title page (viewed on 03, November, 2016).Leung, Chung Yin = Cong dong li xue ti qu shuang xiang wang luo de lian tong xing / Liang Songxian
Haphsa sita Wang & Peng & Wei 2021, comb. n.
No full text4. Haphsa sita (Distant, 1881) comb. n. Cosmopsaltria sita Distant, 1881: 636. Khimbya sita Distant, 1906: 141. Changa sita Lee, 2016: 596. Haphsa stellata Lee, 2009b: 335; Lee, 2016: 596. Distribution. China (Guangxi), India, Vietnam. Remarks. This species was formerly attributed to Changa as the type species by Lee (2016), and the same author synonymized H. stellata Lee, 2009 with Changa sita (Distant, 1881) (Lee, 2016). In the present paper, we remove it to Haphsa based on morphological characterization and phylogenetic analysis (Fig. 4). Lee (2016) also transferred H. jsguillotsi (Boulard, 2005) to Changa, but we confirm it is a member of Haphsa (see below). Accordingly, Changa Lee, 2016 syn. n. is synonymized with Haphsa.Published as part of Wang, Siyue, Peng, Xiaodong & Wei, Cong, 2021, A review of the cicada genus Haphsa Distant, 1905 with the description of one new species from China (Hemiptera: Cicadidae) and a phylogenetic analysis of Haphsa and its allies, pp. 523-538 in Zootaxa 4991 (3) on page 530, DOI: 10.11646/zootaxa.4991.3.5, http://zenodo.org/record/504258
R07. Identification of Antifungal Bisphosphocholines from Medicinal Gentiana Species
Get PDFCorresponding author (NCNPR): Xing-Cong Li, [email protected]://egrove.olemiss.edu/pharm_annual_posters/1006/thumbnail.jp
Author response: COX16 promotes COX2 metallation and assembly during respiratory complex IV biogenesis
Get PDFCytochrome c oxidase of the mitochondrial oxidative phosphorylation system reduces molecular oxygen with redox equivalent-derived electrons. The conserved mitochondrial-encoded COX1- and COX2-subunits are the heme- and copper-center containing core subunits that catalyze water formation. COX1 and COX2 initially follow independent biogenesis pathways creating assembly modules with subunit-specific, chaperone-like assembly factors that assist in redox centers formation. Here, we find that COX16, a protein required for cytochrome c oxidase assembly, interacts specifically with newly synthesized COX2 and its copper center-forming metallochaperones SCO1, SCO2, and COA6. The recruitment of SCO1 to the COX2-module is COX16- dependent and patient-mimicking mutations in SCO1 affect interaction with COX16. These findings implicate COX16 in CuA-site formation. Surprisingly, COX16 is also found in COX1-containing assembly intermediates and COX2 recruitment to COX1. We conclude that COX16 participates in merging the COX1 and COX2 assembly lines
Cong Wang Niansun dui "Er ya" shou san pian de yan jiu kan qi dui yin, yi yuan li de gou jian yu shi jian
No full textM.Phil.Wang Nian-sun（王念孫 1744－1832）was an outstanding scholar, especially in the aspects of textual criticism and Exegesis in the Qian-jia period（乾嘉時期）of the Qing Dynasty. Guangya Shuzheng（廣雅疏證）is his representative masterpiece. In the San-guo period（三國時期）, Zhang Yi（張揖）wrote Guangya（廣雅）as to expand and supplement the contents of Erya（爾雅）, the two books are closely related. Wang Nian-sun decided to start his studies on Erya, however, at the time being, Shao Jin-han（邵晉涵 1743－1796）completed Erya Zhengyi（爾雅正義）and when Hao Yi-xing（郝懿行 1757－1825）was writing Erya Yishu（爾雅義疏）, he had consulted Wang. Both two books are great annotations of Erya. Therefore, Wang diverted his studies from Erya to Guangya.Although Wang Nian-sun did not devote a book specifically to Erya’s studies, he used Erya as a significant source contributed to his writing of Guangya Shuzheng. Erya Yishu has two types of versions currently circulating. They are full version and deleted version. The problem of who is the editor of the deleted version had being argued among scholars. Until 1920, Luo Zhen-yu（羅振玉 1866－1940）got a handwritten version of Erya Yishu. From that time on, it is assured that the deleted version of Erya Yishu was edited by Wang Nian-sun and it became an important source on the research of Wang’s Erya studies.Wang Nian-sun was prominent in sound and meaning studies. It is found that most of Wang’s edition of Erya Yishu were related to Phonology and Exegesis. With the vast amount of sources were used and deductive arguments were applied, Wang’s studies contain scientific logical thinking. Through comparing the first three chapters of the two versions of Erya Yishu, which can single out the amount of contents in Erya deleted by Wang, accompanied with Guangya Shuzheng and the four types of handwritten sources of Wang Nian-sun preserved in The Peking University Library, this thesis aims to discuss and reflect the studies of Erya of Wang, as well as to understand and analyze the principles of Phonology, Exegesis and the scientific research methods of Wang by his practical studies of the above mentioned classical texts.王念孫（1744－1832）是清代乾嘉時期著名的校勘學家、訓詁學家，《廣雅疏證》是其學術研究的重要著作，至今仍廣受學者重視。三國時期的張揖編寫《廣雅》旨在增廣《爾雅》之未備，二書關係密切。王念孫早年有志於《爾雅》的研究，不過，與其同時的邵晉涵（1743－1796）作《爾雅正義》，此書體大思精，郝懿行（1757－1825）作《爾雅義疏》，昕夕過問王氏，亦為治《爾雅》之鉅制，故王氏捨《爾雅》而治《廣雅》。王念孫雖然沒有研究《爾雅》的專著，但在《廣雅疏證》中有不少引用《爾雅》成訓之例。又現今流傳的《爾雅義疏》有足本和節本兩種，對於節本由何人刪改，學界一度眾說紛紜，莫衷一是。及至1920年，羅振玉（1866-1940）得到《爾雅義疏》寫本，確定《爾雅義疏》節本出於王念孫之手，是研究王念孫對《爾雅》訓釋的重要材料。王氏以聲音通訓詁著稱，考其疏證《廣雅》及刪校《爾雅義疏》的內容多涉及音韻、訓詁的問題，校釋旁徵博引，推演論證，具有科學的邏輯研究精神。本文以王念孫刪校《爾雅義疏》首三篇為範圍，輔以《廣雅疏證》、北京大學圖書館館藏《高郵王石臞先生手稿四種》等材料，一方面探討王氏對《爾雅》的研究，另一方面從他的研究實踐中，瞭解其聲訓原理、詞義觀念及科學化的研究方法。周慧儀."2017年12月".Thesis M.Phil. Chinese University of Hong Kong 2018.Includes bibliographical references (leaves 335-348).Abstracts in English and Chinese.Title from PDF title page (viewed on July 20, 2020).Zhou Huiyi
Cong bu wan zheng shu ju chong gou shuang xiang wang luo
No full textM.Phil.Many complex systems such as the brain containing billions of interconnected neurons can be represented by network. A network is composed of individual units known as nodes and the interactions among them are regarded as links. To understand the behavior and functions of complex systems, the first step is to know how the nodes are connected with each other. However, it is generally difficult to observe the network connectivity directly. On the other hand, the time series of the dynamics of nodes can be measured relatively easily. Thus, the problem of network reconstruction from dynamics of all nodes has attracted lots of research interest and many methods have been proposed to tackle this challenging problem. In realistic situation, we are facing an additional challenge of incomplete data in which only the dynamics of a subset of nodes can be measured while measurements from the other nodes are not available. With only the measurements of a subset of nodes available, can we still infer the connectivity among these measured nodes?In this thesis, we address this question of incomplete data for bidirectional networks. We derive a mathematical result that shows that the inverse of the covariance matrix of the dynamics of measured nodes contains the network connectivity information among these nodes and the effect of the nodes whose measurements are not available. With this mathematical result, we study under what circumstances can the network connectivity among the nodes available for measurements be still reconstructed using only their dynamics.許多複雜系統，例如包含有數十億個相互聯繫神經元的大腦，可以由網絡來表示。一個網絡是由各個相互作用的元件組成。這些元件被稱為節點，而節點之間的相互作用則為網絡的連結。要了解複雜系統的特性及功能，重要的一步是得知節點是如何相互連接。然而，節點間的連結通常難以直接觀察。另一方面，節點的動態數據較容易測量。因此，從所有節點的動態重構網絡結構的問題吸引了大量的研究工作，而這些工作提出了各種方法來應對這個具挑戰的問題。在現實情況下，我們面對一個額外的挑戰。很多時侯，只有部份節點的動態能夠被測量，而缺乏其他節點的動態數據。在這種不完整數據的情況下，我們仍然可以推斷這些測量了的節點之間的網絡連結嗎？在本論文中，我們探討由不完整數據重構雙向網絡的問題。我們推導了一個數學結果，得出由被觀測的節點動態數據計算出的共變異數矩陣的逆是包含這些被觀測節點網絡結構的資訊，以及沒有被觀測節點的影響。通過這個數學結果，我們研究在什麼情況下，可以利用被觀測節點的動態數據來重構這些節點之間的連結。Tam, Pok Ho = 從不完整數據重構雙向網絡 / 譚博浩."December 2017."Thesis M.Phil. Chinese University of Hong Kong 2018.Includes bibliographical references (leaves 78-83).Abstracts also in Chinese.Title from PDF title page (viewed on …).Tam, Pok Ho = Cong bu wan zheng shu ju chong gou shuang xiang wang luo / Tan Bohao
Cong dai you za xun de dong li xue zhong chong gou wang luo
No full textPh.D.Complex systems, such as our brain and ecosystems, consist of many interacting components. Network is a representation of such systems with individual components being nodes and the interaction between components indicated by links. How the nodes are linked to one another affects the characteristics and behaviour of the system. For example, the effciency of the spread of infectious diseases is determined by the connectivity of the social network of people. Therefore a crucial first step for the understanding of a complex system is studying its network structure. For many systems, it is diffcult to directly measure the network connectivity. On the other hand, as node dynamics is strongly in uenced by the network structure, itis an important problem to investigate how to extract the connectivity information from node dynamics, which is relatively easier to measure. One common way used to reconstruct network is based on the intuition that two connected nodes are likely to have more correlated dynamical data. A link between two nodes is inferred when their statistical correlation is above some threshold. However this kind of reconstruction method can generate erroneous results. Other reconstruction methods developed by earlier studies also have limitations such as only applicable to networks with bidirectional coupling or noise-free systems, or requiring external intervention or a priori knowledge about the dynamics or coupling functions, which is usually not available in realistic problems. In this thesis, we develop a general method that reconstructs both directed and bidirectional weighted networks using only time series measurements of node dynamics. Our method is based on noise-induced theoretical results relating network structure to measurable quantities from node dynamics, and is applicable for networks acted upon by a white noise or a correlated noise. We show that our method can reconstruct the connectivity and relative coupling strength of links well for different types of networks with non-linear dynamics. In addition, we can extract the strength and correlation time of the noise acting on the system. Our theoretical results also explain why methods based on statistical correlation can give erroneous results.很多複雜系統，如大腦和生態系統，由很多有著相互作用的基本部分組成，可表示為網絡，系統中的基本部分為節點，而節點之間的相互作用則表示為網絡中的連結。這些連結影響著系統的特徵和表現，例如傳染病散播的效率取決於社會網絡的連結結構。故此，若要了解複雜系統，首要便是研究其網絡結構。一般網絡的結構並不易被直接量度出來。另一方面，網絡連結對於節點的動力學有很大的影響，加上節點的動態較易被測量，因此探討如何從節點的動力學中提取網絡結構是一個重要的課題。一個常見的重構網絡方法是基於兩相連節點較大可能有著較相關的動態數據的直觀，當兩節點的統計相關性大於某數值時，這兩節點便推論為相連的，但事實上這些方法會得出錯誤的結果。早期研究所得的重構網絡方法也有得不同的限制，例如只適用於雙向網絡或無雜訊的系統、或是需要外部干預系統或事前已知動態函數等，這些都是在現實情況中難以滿足的條件。在此論文中，我們提出一個通用的方法，只須利用測量節點動態的時間序列便能重構有向和雙向加權網絡。我們的方法建構於由雜訊引起的理論數式，把網絡連結結構與一些只需以節點動態數據計算出的量連接起來，適用於帶有白雜訊或色雜訊的網絡。在不同結構的網絡和非線性動力學的系統中，我們的方法能很好地提取網絡連結和連結的相對強度。除此之外，我們的方法還可以提取系統中雜訊的強度和關聯時間。我們的理論數式亦能解釋為何利用統計相關性的重構網絡方法可導致錯誤的結果。Tam, Hiu Ching = 從帶有雜訊的動力學中重構網絡 / 譚曉晴.Thesis Ph.D. Chinese University of Hong Kong 2017.Includes bibliographical references (leaves 99-104).Abstracts also in Chinese.Title from PDF title page (viewed on …).Tam, Hiu Ching = Cong dai you za xun de dong li xue zhong chong gou wang luo / Tan Xiaoqing
Research on Three-Level Supply Chain Coordination Based on Revenue Sharing Contract and Option Contract
No full textSupply chain coordination is an important goal of supply chain management. Considering a three-level supply chain, which is consisting of a manufacturer, a distributor, and a seller, it studies the problem of the coordination of the three-level supply chain under the combination contracts. Distributor and seller will cooperate in the form of option contract, and distributor and manufacturer will cooperate in the form of revenue sharing contract. Firstly, the supply chain contract model under the assumption of risk neutral is established, so the optimal order quantity of supply chain is obtained and the coordination of the three-level supply chain is studied. Also, the relationship between the contract parameters is given when the supply chain can achieve coordination. Then, this paper introduces the risk factors, and establishes the new contract model under the consideration of the seller's risk seeking and the distributor's risk aversion. Finally, the relevant conclusions are proved by numerical examples.National Natural Science Foundation of China [61203148, 13 JGC 096, 61472027]CPCI-S(ISTP)1215-122650
Comparison between reflection-mode photoplethysmography and arterial diameter change detected by ultrasound at the region of radial artery
No full textAuthor name used in this publication: Cong-Zhi WangAuthor name used in this publication: Yong-Ping Zheng2010-2011 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishedGreen (AAM
The harmful effect of null hypothesis significance testing on marketing research: an example
Get PDFNull hypothesis significance testing (NHST) has had and continues to have an adverse effect on marketing research. The most recent American Statistical Association (ASA) statement recognized NHST’s invalidity and thus recommended abandoning it in 2019. Instead of revisiting the ASA’s reasoning, this research note focuses on NHST’s pernicious peripheral effect on marketing research. One example of this problem is the well-known and influential recommendation against excessive power in McQuitty, 2004, McQuitty, 2018. Instead, researchers always should prefer larger sample sizes because they always engender more precision than smaller sample sizes, ceteris paribus
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