18,772 research outputs found
Datasets and Code for Free-breathing Whole-heart T1
No full textT1 maps and corresponding manually segmented results of 12 healthy volunteers and 15 patients measured by MOLLI53, SASHA, and Free-breathing Whole-heart T1 at 3T. The Matlab tools for data analysis are also included
In-vivo T1 maps
No full textIn-vivo T1 maps collected by MOLLI and newly development LL4 with MyoMapNet Reconstructio
Item parameter drift and online calibration
Get PDFAn important assumption of item response theory based computerized adaptive assessment is item parameter invariance. Sometimes, however, item parameters are not invariant across different test administrations due to factors other than sampling error; and this phenomenon is termed item parameter drift. Several methods have been developed to detect drifted items, and most of the them were designed to detect drifts in the unidimensional item response model under the paper and pencil testing framework, which may not be adequate for computerized adaptive testing.
This paper introduces an online (re)calibration design to detect item parameter drift for computerized adaptive testings in both unidimensional and multidimensional environment. Specifically, for online calibra- tion optimal design in unidimensional computerized adaptive testing model, a modified two-stage design is proposed by implementing a proportional density index algorithm. For a multidimensional computerized adaptive testing model, a four-quadrant online calibration pretest item selection design with proportional density index algorithm is proposed. Comparisons were made between different online calibration item selection strategies. Results showed that under unidimensional computerized adaptive testing, the pro- posed modified two-stage item selection criterion with proportional density algorithm outperformed the other existing methods in terms of item parameter calibration and item parameter drift detection, and un- der multidimensional computerized adaptive testing, the online (re)calibration technique with the proposed four-quadrant item selection design with proportional density index outperformed other methods.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-05-01The student, Rui Guo, accepted the attached license on 2016-04-20 at 11:55.The student, Rui Guo, submitted this Dissertation for approval on 2016-04-20 at 11:56.This Dissertation was approved for publication on 2016-04-22 at 12:07.DSpace SAF Submission Ingestion Package generated from Vireo submission #6200 on 2016-07-07 at 13:48:00Made available in DSpace on 2016-07-07T20:26:30Z (GMT). No. of bitstreams: 4
GUO-DISSERTATION-2016.pdf: 693553 bytes, checksum: 9ea20121c7a0108ff9682bd0f965d6c4 (MD5)
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Previous issue date: 2016-04-22Embargo set by: Seth Robbins for item 93053
Lift date: 2018-07-07T20:28:14Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 93053
Lift date: 2018-07-07T20:35:34Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 93053 on 2018-07-08T09:15:23Z
VCC-LF dataset
No full textThis is readme for VCC-LF dataset.
This dataset provides light field mat files that capture by Lytro I.
The light field resolusion is [h,w,u,v,d].
If you use these data or our toolkit code, please cite our paper properly
@inproceedings{ lirsiggraphasia2019,
title={Hierarchical and View-invariant Light Field Segmentation by Maximizing Entropy Rate on 4D Ray Graphs},
author={Li, Rui and Heidrich, Wolfgang},
booktitle={ACM Transactions on Graphics (Proc. SIGGRAPH Asia)},
year={2019},
publisher={ACM}
Essays on antecedents and consequences of cloud computing capabilities in organizations: an empirical analysis of field data
Get PDFCloud computing is widely recognized as a potential disruptive paradigm that changes how IT is consumed and business is conducted in various industries. Managerial and academic literature has shown that cloud computing may benefit firms in various ways such as cost savings, fast project development, and business innovation. Nevertheless, there are many different interpretations and perceptions of cloud computing about how to better prepare for and use it in the information systems (IS) literature. A systematic analysis is necessary to clarify the equivocal issues around cloud computing and guide managers to better understand and utilize cloud computing in practice. This dissertation addresses several important relationships around cloud computing using theoretical models and empirical data as a representation of how the questions about cloud computing may be investigated in the IS literature and how the findings may benefit organizations in using cloud computing. Therefore, the dissertation comprises three connected chapters that address one important antecedent of cloud computing adoption – internal IT modularity within firms and two important consequences – firm performance and strategic alliance formation. It is found that in order to better prepare for cloud computing adoption, firm users can do something themselves by modularizing their internal IT systems. Firms also need to know whether and how cloud computing, after all, can benefit their firm performance or other activities such as strategic alliance formation. The findings show that cloud computing overall and its various specific cloud services may promote firm performance directly or complementarily with internal enterprise resources. Cloud computing and its specific cloud services may also exert different effects on strategic alliance formation. This dissertation systematically addresses the issues around cloud computing in the IS literature and sheds lights on how such a study can be applied to help managers and decision makers in industries to better understand and use cloud computing to achieve their business goals.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-08-01The student, Rui Guo, accepted the attached license on 2016-06-16 at 15:56.The student, Rui Guo, submitted this Dissertation for approval on 2016-06-16 at 16:01.This Dissertation was approved for publication on 2016-06-17 at 11:39.DSpace SAF Submission Ingestion Package generated from Vireo submission #9676 on 2016-11-10 at 12:24:35Made available in DSpace on 2016-11-10T18:39:10Z (GMT). No. of bitstreams: 3
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Previous issue date: 2016-06-17Embargo set by: Seth Robbins for item 95433
Lift date: 2018-11-10T18:39:22Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 95433
Lift date: 2018-11-10T18:43:22Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 95433 on 2018-11-11T10:15:24Z
FIGURE 3 in Leucoagaricus purpurascens, a new species from eastern China based on morphological characteristics and molecular evidence
No full textFIGURE 3. Microscopic characteristics of Leucaoagricus purpurascens (HKAS 123023, holotype). a. Basidia; b. Basidiospores; c. Pileipellis.Published as part of Guo, Ting, Ma, Yun-Rui, Yang, Rui-Heng, Ge, Zai-Wei & Bao, Da-Peng, 2023, Leucoagaricus purpurascens, a new species from eastern China based on morphological characteristics and molecular evidence, pp. 197-206 in Phytotaxa 584 (3) on page 203, DOI: 10.11646/phytotaxa.584.3.6, http://zenodo.org/record/764563
Figures 10–11 in Review of the genus Latuspina (Hymenoptera: Cynipidae), with descriptions of two new species and their host galls
No full textFigures 10–11. Latuspina acutissima Wang, Pujade-Villar & Guo, sp. nov., galls.Published as part of Wang, Yiping, Guo, Rui, Pujade-Villar, Juli, Wang, Shijun & Chen, Xuexin, 2016, Review of the genus Latuspina (Hymenoptera: Cynipidae), with descriptions of two new species and their host galls, pp. 82-88 in Zoological Systematics 41 (1) on page 85, DOI: 10.11865/zs.201605, http://zenodo.org/record/536633
The trombone as portrayed in Portuguese iconography during the sixteenth and early seventeenth centuries
No full textThis article studies eleven sixteenth and seventeenth century iconographical sources depicting slide brass instruments, by both Portuguese and foreign artists active in Portugal, as well as foreign artists depicting Portuguese scenes. This study addresses questions concerning aspects of trombone technique that have not previously been considered and may have implications in the way the trombone was understood elsewhere in Europe. It focuses on aspects of technique depicted that may be representative of the trombone’s contemporary design and performance and therefore the manner in which the instrument was held and indeed played. Finally, this article suggests a transitional technical period when the way of holding the single-slide trumpet may have been used to play the trombone.Publisher PD
sj-docx-1-dhj-10.1177_20552076221140763 - Supplemental material for Access, charge and quality of tele-dermatology e-consults in China: A standardized patients study
No full textSupplemental material, sj-docx-1-dhj-10.1177_20552076221140763 for Access, charge and quality of tele-dermatology e-consults in China: A standardized patients study by Rui Guo, Mengchi Hou, Yangyang Han and Xing Lin Feng in Digital Health</p
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