11,333 research outputs found
Stenochironomus zhengi sp. nov. from Dawei Mountain National Park, Yunnan China (Diptera: Chironomidae)
No full textLin, Xiao-Long, Yao, Yuan, Yan, Chun-Cai, Liu, Wen-Bin (2021): Stenochironomus zhengi sp. nov. from Dawei Mountain National Park, Yunnan China (Diptera: Chironomidae). Zootaxa 4970 (2): 385-390, DOI: https://doi.org/10.11646/zootaxa.4970.2.1
Wei da de shi yan
No full textF・齊蘇偉德著 ; 丁大維譯.Abridged ed.Translation of: The great experiment: An introduction to the history of the American people / Frank Thistlethwaite. Cambridge [Eng.] : University Press, 1955.F. Thistlethwaite zhu ; Ding Dawei yi
Correspondence to Zhou Yan
No full textOn November 2nd, 1996, art critic Fei Dawei sent from his Paris home a fax to Zhou Yan. In his letter, Fei describes his plans for the 22nd and 23rd. which involve four Chinese artists also based in France: Yang Jie-Chang, Huang Yong-Ping, Yan Pei-Ming, and Chen Zhen. The critic also repeatedly mentions a woman named Julia , referring to Julia Brown, an art curator. He tells Zhou that he is planning to meet a Taiwanese artist whom Julia has introduced to him. The letter ends with Fei\u27s request for Zhou Yan to fax Julia and tell him what she says.https://digital.kenyon.edu/zhoudocs/1506/thumbnail.jp
Supplemental Material - Insights into the luminescent properties of poly(phenylene sulfide)–grafted metal–organic framework (Tb–MOF–PPS) via copolymerization
No full textSupplemental Material for Insights into the luminescent properties of poly(phenylene sulfide)–grafted metal–organic framework (Tb–MOF–PPS) via copolymerization by Wanli Tang, Pengcheng Li, Dawei Yan, Yonggang Yan, Haohao Ren, Bo Wang and Jingxian Zhao in High Performance Polymers</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
Supplemental Material - The arrival ward requiring help by wheelchair or medical cart, arterial oxygenation index, age, albumin and neutrophil count score: Predicting in-hospital mortality in Chinese patients with acute exacerbations of chronic obstructive pulmonary disease
No full textSupplemental Material for The arrival ward requiring help by wheelchair or medical cart, arterial oxygenation index, age, albumin and neutrophil count score: Predicting in-hospital mortality in Chinese patients with acute exacerbations of chronic obstructive pulmonary disease by Dawei Chen, Caimei Chen, Pan Zhang, Feng Zhang, Hao Zhang, Qing Sun, Jian Sun, Yan Tan, Binbin Pan and Xin Wan in Chronic Respiratory Disease</p
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
Supplemental Material - Nadir Hemoglobin Concentration After Spinal Tumor Surgery: Association With Risk of Composite Adverse Events
No full textSupplemental Material for Nadir Hemoglobin Concentration After Spinal Tumor Surgery: Association With Risk of Composite Adverse Events by Xuena Wang, Jiachun Tao, Yinbo Zhong, Yuanyuan Yao, Tingting Wang, Qi Gao, Guangxin Xu, Tao Lv, Xuejie Li, Dawei Sun, Zhenzhen Cheng, Mingxia Liu, Jingpin Xu, Chaomin Wu, Ying Wang, Ruiyu Wang, Bin Zheng, and Min Yan in Global Spine Journal.</p
Capital asset accounting policies under GASB Statement No. 34: Characteristics, antecedents, and implications
No full textIn this paper, we study the evolution of state and local governments’ capital asset accounting policies from the adoption of GASB Statement No. 34 through the fiscal year ending in 2016. We document substantial cross-sectional and time-series variation in the capitalization thresholds and estimated useful lives pertaining to major classes of capital assets, including buildings, equipment, improvements, and infrastructure assets. Diversity in capital asset accounting policies potentially diminishes the comparability of capital asset accounting information across governments and over time. We also discuss matters related to the implementation and ongoing use of the modified approach for reporting infrastructure assets. Our findings are useful to the GASB as well as to users of government financial reports.Peer reviewe
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