1,723,287 research outputs found
YI, GUO-SHU
No full text本文旨在應用有效斷面，對一承受多種載重之平面剛架結構，在應力、尺寸限制下，
求其最小質量設計。
文中利用AICS 鋼結構手冊中之W 型斷面為設計斷面，採用有限單元法為分析工具，
以樑單元件之斷面模數為設計變數，樑單元件之應力計算乃利用材料力學計算方法（
即應力等於軸向應力與彎矩應力之和），以各單元之應力必須在容許應力範圍作為應
力限式，有別於一般所用之應力限制式，以作較嚴謹之設計。
整個設計以研究結構內作用力之敏感度分析之計算方法將非線性限制式線性化，使設
計問題化為一線性規劃模式，再利用簡捷法(The Simplex Method) 求得最小質量，
復而選取有效之斷面以符合實際的需要。
最後列舉三個實際數值範例，說明數值計算的技巧，證實本文設計方法的效用
Correction: Effects of polymers on the properties of hydrogels constructed using sodium deoxycholate and amino acid
No full textCorrection for ‘Effects of polymers on the properties of hydrogels constructed using sodium deoxycholate and amino acid’ by Yi Guo et al., RSC Adv., 2018, 8, 8699–8708.</p
Casting voids in nickel superalloy and the mechanical behaviour under room temperature tensile deformation
Get PDFThe microstructure of a second-generation nickel base superalloy is studied using X-ray computed tomography (XCT) and scanning electron microscopy (SEM). The as-cast material contains 0.15 (±0.001) vol% voids and these are distributed in the inter-dendritic region. The volume fraction of the voids increases to 0.21 (±0.001) vol% after tensile deformation. Surface observations show evidence of dislocation emissions from the void surface, a mechanism possibly facilitates the expansion of the voids and contributes to the increased void volume fraction. Phenomenological parameters such as stress triaxiality, often believed to control void growth, are investigated through crystal plasticity simulation and compared with literature reported data. The results indicate weak correlation between stress triaxiality and void growth, but this may be possibly due to the lack of data at higher level of plastic deformation, which is limited by the ductility of the material. The distribution of the stress triaxiality field within the sample is heterogeneous and the peak of the triaxiality field is a function of the ratio between notch diameter and sample width. A smaller notch diameter to sample width ratio tend to distribute the triaxiality peaks towards the centre of the sample but also lead to higher strain localisation, an effect that results in early sample failure
sj-pdf-1-smo-10.1177_20503121221095923 – Supplemental material for Cross-sectional relationship between pain intensity and subjective cognitive decline among middle-aged and older adults with arthritis or joint conditions: Results from a population-based study
No full textSupplemental material, sj-pdf-1-smo-10.1177_20503121221095923 for Cross-sectional relationship between pain intensity and subjective cognitive decline among middle-aged and older adults with arthritis or joint conditions: Results from a population-based study by Ann L Horgas, Amanda L Elliott, Shuang Yang and Yi Guo in SAGE Open Medicine</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Supplemental_Material - Computer-Aided Diagnosis of Pancreas Serous Cystic Neoplasms: A Radiomics Method on Preoperative MDCT Images
No full textSupplemental_Material for Computer-Aided Diagnosis of Pancreas Serous Cystic Neoplasms: A Radiomics Method on Preoperative MDCT Images by Ran Wei, Kanru Lin, Wenjun Yan, Yi Guo, Yuanyuan Wang, Ji Li, and Jianqing Zhu in Technology in Cancer Research & Treatment</p
Integration_Appendix_SageFormat.R1 – Supplemental material for Assessing the effect of data integration on predictive ability of cancer survival models
No full textSupplemental material, Integration_Appendix_SageFormat.R1 for Assessing the effect of data integration on predictive ability of cancer survival models by Yi Guo, Jiang Bian, Francois Modave, Qian Li, Thomas J George, Mattia Prosperi and Elizabeth Shenkman in Health Informatics Journal</p
Appendix_A – Supplemental material for Assessing mental health signals among sexual and gender minorities using Twitter data
No full textSupplemental material, Appendix_A for Assessing mental health signals among sexual and gender minorities using Twitter data by Yunpeng Zhao, Yi Guo, Xing He, Yonghui Wu, Xi Yang, Mattia Prosperi, Yanghua Jin and Jiang Bian in Health Informatics Journal</p
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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