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Publications Influence

Psychometric evaluation of the Chinese (mainland) version of Job Content Questionnaire: a study in university hospitals.

- J. Li, Wenjie Yang, P. Liu, Z. Xu, S. Cho
- Psychology, Medicine
- Industrial health
- 1 April 2004

To evaluate the psychometric properties of the Chinese (mainland) version of Job Content Questionnaire (JCQ), this validation study was conducted in university hospitals among 193 men and 581 women… Expand

92 7

The infinite sum of the cubes of reciprocal Pell numbers

- Z. Xu, Tingting Wang
- Mathematics
- 26 June 2013

Given the sequence of Pell numbers {Pn}, we evaluate the integral part of the reciprocal of the sum ∑k=n∞1Pn3 explicitly in terms of the Pell numbers themselves.MSC: 11B39.

9 1

On the Dirichlet characters of polynomials in several variables

x=N+1 χ(f(x)) ≪ p log p, where A ≪ B denotes |A| < kB for some constant k which in this case depends on the degree of f . The estimate (1) is the best possible. In fact, the first author [8] proved… Expand

5 1

MEAN VALUE OF THE CHARACTER SUMS OVER INTERVAL

- Z. Xu
- Mathematics
- 2 January 2009

Let $q>8$ be an odd integer and $p$ a prime with $p$ a prime with $p<q$ and $p\nmid q$. The main purpose of this paper is to study the mean value properties of the character sums over interval… Expand

1 1

On the mean value of the two-term exponential sums with Dirichlet characters

- Z. Xu, Tianping Zhang, W. Zhang
- Mathematics
- 1 April 2007

The main purpose of this paper is using the analytic method to study the mean value properties of the two-term exponential sums with Dirichlet characters, and give an explicit formula for its fourth… Expand

14 1

On a problem of D.H. Lehmer over short intervals

Abstract Let p be an odd prime and a be an integer coprime to p. Denote by N ( a , p ) the number of pairs of integers b , c with b c ≡ a ( mod p ) , 1 ⩽ b , c ⩽ ( p − 1 ) 2 and with b , c having… Expand

11 1

Nickel Formation on Graphite Sheet Surface for Improving Wettability with Magnesium Alloy

Magnesium-calcium alloy-based composites reinforced with vapor grown carbon fibers (VGCFs) are supposed to possess satisfactory high-temperature applications. However, poor wettability of magnesium… Expand

4

Properties of ternary NiFeW alloy coating by jet electrodeposition

- J. Yu, Jia Zhao, +5 authors K. Matsugi
- Materials Science
- Bulletin of Materials Science
- 23 March 2018

In this paper, ternary NiFeW alloy coatings were prepared by jet electrodeposition, and the effects of lord salt concentration, jet speed, current density and temperature on the properties of the… Expand

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