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| 1 | Is transformational leadership always good for employee task performance?Examining curvilinear and moderated relationships显示文摘Transformational leadership,generally considered as a desirable leadership style,has positive effects on various performance outcomes of employees;however,its productivity has been called into question because of a relative neglect of its negative aspects.Addressing this gap,an attempt at rethinking the relationship between transformational leadership and employee performance is important.The paradoxical perspective indicates that conflicting positive and negative effects of transformational leadership can coexist,which provides possibility and rationality for thorough consideration of employees'task performance influenced by transformational leaders.Integrating the principle of diminishing marginal utility and the'Too-Much-of-a-Good-Thing(TMGF)'effect,this research explores an inverted U-shaped relationship between transformational leadership and employee task performance.Furthermore,applying social cognitive theory,we assume an employee's proactive personality moderates the curvilinear influence of transformational leadership on employees'task performance.As expected,results from a study of data from 209 supervisorsubordinate relationships from China showed that the inverted U-shaped relationship between transformational leadership and employees'task performance was moderated by employees'proactive personality.Theoretical and practical implications are discussed. | Yashuo Chen Ranran Ning Tong Yang Shangjun Feng Chunjiang Yang | 2018 | Frontiers of Business Research in China2018，12，4： | 2 |
| 2 | On matrices whose numerical ranges have circular or weak circular or weak circular symmetry显示文摘 | TAM Bitshum YANG Shangjun | 1999 | Linear Algebra and its Appileations1999，，： | 1 |
| 3 | Generalization of Vandermonde determinants 显示文摘 | YANG Shangjun | 2001 | Linear Algebra Appl2001，，336： | 1 |
| 4 | Algorithms for determining the copositivity of a given symmetric matrix显示文摘 | Yang Shangjun Li Xiaoxin | 2009 | Linear Algebra Appl2009，430，： | 1 |
| 5 | Changing Patterns of Mortality in Diabetes Mellitus Among Older Adults—China,1987-2021显示文摘What is already known about this topic?Diabetes mellitus poses a significant public health concern for older adults in China,resulting in increased mortality rates.What is added by this report?This study investigates the evolving pattern of mortality associated with diabetes mellitus and analyzes the contributions of age,period,and cohort effects from 1987 to 2021.The results demonstrate a consistent rise in diabetes mellitus mortality over the last 30 years,notably in rural regions.What are the implications for public health practice?This research offers valuable insights to aid policymakers in developing targeted intervention strategies that address the specific needs of higher-risk populations,such as women,older adults,and individuals in rural areas. | Chen Chen Yihao Zhao Shangjun Liu Yu Wu Shan Yang Binbin Su Xiaoying Zheng | 2023 | China CDC weekly2023，5，50： | 0 |
| 6 | Unleash electron transfer in C–H functionalization by mesoporous carbon-supported palladium interstitial catalysts显示文摘The functionalization of otherwise unreactive C–H bonds adds a new dimension to synthetic chemistry,yielding useful molecules for a range of applications.Arylation has emerged as an increasingly viable strategy for functionalization of heteroarenes which constitute an important class of structural moieties for organic materials.However,direct bisarylation of heteroarenes to enable aryl-heteroaryl-aryl bond formation remains a formidable challenge,due to the strong coordination between heteroatom of N or S and transitional metals.Here we report Pd interstitial nanocatalysts supported on ordered mesoporous carbon as catalysts for a direct and highly efficient bisarylation method for five-membered heteroarenes that allows for green and mild reaction conditions.Notably,in the absence of any base,ligands and phase transfer agents,high activity(turn-over frequency,TOF,up to 107 h-1)and selectivity(>99%)for the 2,5-bisarylation of five-membered heteroarenes are achieved in water.A combination of characterization reveals that the remarkable catalytic reactivity here is attributable to the parallel adsorption of heteroarene over Pd clusters,which breaks the barrier to electron transfer in traditional homogenous catalysis and creates dual electrophilic sites for aryl radicals and adsorbate at C2 and C5 positions.The d-band filling at Pd sites shows a linear relationship with activation entropy and catalytic activity.The ordered mesopores facilitate the absence of a mass transfer effect.These findings suggest alternative synthesis pathways for the design,synthesis and understanding of a large number of organic chemicals by ordered mesoporous carbon supported palladium catalysts. | Xiaorui Zhao Yueqiang Cao Linlin Duan Ruoou Yang Zheng Jiang Chao Tian Shangjun Chen Xuezhi Duan De Chen Ying Wan | 2021 | National Science Review2021，8，4： | 0 |
| 7 | A CLASS OF P_o-MATRICES显示文摘We use Mn for the set of all n×n real matrices;(n)for{1,…,n};Sn for the symmetricgroup on〈n〉;A[α]α∈<n〉for the principal submatrix of A determined by the index setα:A∈Mn is called a P0(P)-matrix,if each principal minor of it is nonnegative(positive);A∈Mn is totally nonnegative if all its minors of all orders are nonnegative.It is known that if A=(αij)∈Mn is a positive semidefinite symmetric matrix,or an M-matrix or a totally nonnegative matrix,then A satisfies Fischer’s Inequality: | Yang Shangjun Cai Yan(Dept.of Math .,Anhui University,Hefei 230039,PRC) | 2000 | Numerical Mathematics A Journal of Chinese Universities(English Series)2000，9，S1： | 0 |
| 8 | A NOTE ON THE STRUCTURE OF STOCHASTIC MATRICES显示文摘It is known that nearly uncoupled irreducible stochastic matrices must possess sub-dominant eigenvalues near λ=1. It is nature to ask whether the converse is true. Hortfieland Meyer [2] gave a positive answer. They introduced the notion of uncoupling measureof Stochastic matrices. For an n×n stochastic matrix P the uncoupling measure of P is de-fined as σ(p)=min((sum from i∈M1,j∈M1(Pij))+(sum from i∈M1,j∈M1(Pij)), where the minimum is taken over | Zhang Xiaodong(Dept.of Math.,Anhui University,Hefei 230039,PRC)Yang Shangjun (Dept.of Math.,Anhui University ,Hefei 230039,PRC) | 2000 | Numerical Mathematics A Journal of Chinese Universities(English Series)2000，9，S1： | 0 |
| 9 | Counting extreme U1 matrices and characterizing quadratic doubly stochastic operators显示文摘U 1 矩阵和极端 U 1 矩阵成功地被用来由 R 学习二次的二倍地随机的操作员。Ganikhodzhaev 和 F。Shahidi [线性代数学 Appl, 2010, 432:24-35 ] ,在为极端的一个 U 1 矩阵的一个必要条件被给的地方。S. 杨和 C. 徐[线性代数学 Appl, 2013, 438:3905-3912 ] 为是一个极端 U 1 矩阵并且调查极端 U 1 矩阵的结构的一个对称的 nonnegative 矩阵给了一个必要、足够的条件。在这份报纸,我们数 n 瑡牯 s 湥 ? 的排列等价班的数字 ?耤 吗?? | Quanbing ZHANG Shangjun YANG | 2016 | Frontiers of Mathematics in China2016，11，3： | 0 |
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