10,453 research outputs found
HiPrompt: Few-Shot Biomedical Knowledge Fusion via Hierarchy-Oriented Prompting
No full textJiaying Lu, Jiaming Shen, Bo Xiong, Wenjing Ma, Steffen Staab, and Carl Yan
Ji ben li zi wu li xue de yan jiu
No full textTsui, Ka Ming = 基本粒子物理學的研究 / 徐嘉明.Thesis M.Phil. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 150-157).Abstracts also in Chinese.Title from PDF title page (viewed on 03, January, 2017).Tsui, Ka Ming = Ji ben li zi wu li xue de yan jiu / Xu Jiaming
Influence of oil aging on the formation and migration behavior of space charge in oil-paper insulation dielectrics
No full textInvestigating the influence of oil aging or insulation paper aging on the formation and migration of space charge in oil-paper insulation dielectrics during its ageing process is helpful to provide the method to restrain the space charge formation. In this paper, the insulation oil was thermally aged at 130?? for up to 22 days and its ageing condition was identified. The space charge behavior of the oil-paper sample impregnated with oil aged for different times was investigated by the pulsed electro-acoustic (PEA) method. The space charge measurements were taken at various times during the stressing period of both voltage-on and voltage-off(short-circuit condition), as well as the decay process. The influence of oil ageing on the total charge amount, the surface trap energy density and the electric field distortion was analyzed. Results show that under the negative polarity power supply, the morethe deterioration of the oil, the larger the maximum chargedensity of positive charge injected into the paper near to the anode and the negative charge accumulated at the paper-paper interface near to the anode. The total amount of charge, the surface trap energy density and the electric field distortion of the oil-paper sample increase with the oil aging degree
sj-docx-3-tag-10.1177_17562848221101722 – Supplemental material for SARS-CoV-2-inactivated vaccine hesitancy and the safety in inflammatory bowel disease patients: a single-center study
No full textSupplemental material, sj-docx-3-tag-10.1177_17562848221101722 for SARS-CoV-2-inactivated vaccine hesitancy and the safety in inflammatory bowel disease patients: a single-center study by Yubin Cao, Jiaming Feng, Shihao Duan, Yi Yang and Yan Zhang in Therapeutic Advances in Gastroenterology</p
sj-docx-2-tag-10.1177_17562848221101722 – Supplemental material for SARS-CoV-2-inactivated vaccine hesitancy and the safety in inflammatory bowel disease patients: a single-center study
No full textSupplemental material, sj-docx-2-tag-10.1177_17562848221101722 for SARS-CoV-2-inactivated vaccine hesitancy and the safety in inflammatory bowel disease patients: a single-center study by Yubin Cao, Jiaming Feng, Shihao Duan, Yi Yang and Yan Zhang in Therapeutic Advances in Gastroenterology</p
sj-docx-1-tag-10.1177_17562848221101722 – Supplemental material for SARS-CoV-2-inactivated vaccine hesitancy and the safety in inflammatory bowel disease patients: a single-center study
No full textSupplemental material, sj-docx-1-tag-10.1177_17562848221101722 for SARS-CoV-2-inactivated vaccine hesitancy and the safety in inflammatory bowel disease patients: a single-center study by Yubin Cao, Jiaming Feng, Shihao Duan, Yi Yang and Yan Zhang in Therapeutic Advances in Gastroenterology</p
Using performance assessment in secondary school mathematics: an empirical study in a Singapore classroom
No full textThis article reports an exploratory study on using performance assessment in mathematics instruction in a high-performing secondary school in Singapore. An intact mathematics class participated in the study, and received chapter-based performance tasks as intervention during regular mathematics lessons for about one and a half school years. The performance tasks used included authentic and/or open-ended tasks. The students’ academic achievements and attitudes in mathematics were compared with a comparison class that did not receive the intervention. Both quantitative and qualitative data were collected, mainly through questionnaire surveys, performance task tests, conventional school exams, and interviews with students and teachers. The results suggest that the students receiving the intervention performed significantly better than their counterparts in solving conventional exam problems, and in general they also showed more positive changes in attitudes towards mathematics and mathematics learning. The students from the experimental class also expressed positive views about the benefits of using performance tasks in promoting their ability in higher order thinking, though no statistically significant difference was detected between the two classes of students in solving unconventional tasks before and after intervention. Overall, the results appear to support teachers’ using contextualised problems in real life situations and open-ended investigations in students’ learning of mathematic
AdaptFormer: An Adaptive Hierarchical Semantic Approach for Change Detection on Remote Sensing Images
No full textChange detection (CD) in remote sensing (RS) aims
to consistently track alterations in specific regions over time.
While current methods employ hierarchical architectures to
analyze semantic details, they often miss crucial changes across
different semantic levels, resulting in partial representations of
environmental shifts. Addressing this, we propose AdaptFormer,
uniquely designed to adaptively interpret hierarchical semantics.
Instead of a one-size-fits-all approach, it strategizes differently
across three semantic depths: employing straightforward
operations for shallow semantics, assimilating spatial data for
medium semantics to emphasize detailed interregional changes,
and integrating cascaded depthwise attention for in-depth semantics,
focusing on high-level representations. The experimental
evaluations reveal that AdaptFormer surpasses many leading
benchmarks, showcasing exceptional accuracy on LEVIR-CD
and DSIFN-CD datasets. AdaptFormer showcases impressive
performance with F1 and intersection over union (IoU) scores
of 92.65% and 86.31% on the LEVIR-CD dataset, and 97.59%
and 95.29% on the DSIFN-CD dataset, respectively. The datasets
are available at https://github.com/aigzhusmart/AdaptFormer
Why hedge? Extent, nature, and determinants of derivative usage in U.S. municipalities
No full textUsing a hand-collected dataset of over 300 observations of large U.S. cities and counties, this paper investigates the extent, nature and determinants of derivatives usage in the municipal sector.Over half of our sample entities engage in derivative transactions and a vast majority of these transactions are intended to manage interest rate risk. Swaps, by far, are the most popular derivative instrument. In terms of the determinants of derivative usage,we find that the propensity to use derivatives as well as the extent of derivative usage is higher for municipalities that are larger and more financially constrained. We do not find growth to be related to municipal derivative usage. Contrary to suggestions made in the popular press, we fail to find managerial opportunism to be a significant factor in municipal derivative usage. We also find that more sophisticated managers of large municipalities and less sophisticated managers of small municipalities are more likely to engage in derivative transactions.Peer reviewe
A study on the reliability of consecutive k-Out-of-n: G systems based on Copula
No full textThe computation of reliability characteristics of a system that consists of dependent components is sometimes difficult especially when the type of dependence is not known. This article introduces the copula method to calculate the reliability of dependent consecutive k-out-of-n: G systems. The components in these systems are dependent on each other and the dependency may be either linear or nonlinear. The copula is a popular tool for modeling the dependence structure of data. It contains the information about the dependency structure of a vector of random variables and can capture nonlinear dependence. Based on the copula theory, the article analyzes the consecutive k-out-of-n: G systems and gets the reliability indexes. Finally, some numerical examples are presented to illustrate the results obtained in this article.Peer reviewe
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