Time filter

Source Type

Wang Z.,China University of Mining and Technology | Wang N.,Jiangsu University of Science and Technology
Expert Systems with Applications | Year: 2012

This study investigates the quantitative relationship between knowledge sharing, innovation and performance. Based on the literature review, we develop a research model positing that knowledge sharing not only have positive relationship with performance directly but also influence innovation which in turn contributes to firm performance. This model is empirically tested using data collected from 89 high technology firms in Jiangsu Province of China. It is found that both explicit and tacit knowledge sharing practices facilitate innovation and performance. Explicit knowledge sharing has more significant effects on innovation speed and financial performance while tacit knowledge sharing has more significant effects on innovation quality and operational performance. © 2012 Elsevier Ltd. All rights reserved.

Liu C.,Jiangsu University of Science and Technology | Yi X.,Shanghai Aerospace Equipments Manufacturer
Materials and Design | Year: 2013

Residual stress is a crucial factor when assessing the integrity of engineering components and welded assemblies. The internal longitudinal stresses in 4. mm and 8. mm thick AA6061-T6 aluminum alloy friction stir welding (FSW) specimens are measured with contour method. The measuring procedure of the contour method including specimen cutting under clamps with a wire electric discharge machine, precise contour measurement with a coordinate measuring machine, careful data processing and elastic finite element analysis are introduced in detail. Finally, the longitudinal residual stresses throughout the cut plane for the two joints are mapped, and the through-thickness longitudinal stresses of the two FSW joints are also analyzed. Investigated results show that the contour method can be applied to measure the internal residual stress in thin plates with a thickness of 4. mm; the longitudinal stress distribution in the present study is not an apparent M-shaped distribution in the transverse direction; within the weld region, the tensile longitudinal stress in the advancing side is larger than that in the retreating side; the longitudinal stresses are not uniform across the thickness of specimens; the peak tensile longitudinal stresses for both joints reach 168. MPa (amount to 61% of the yield strength of AA6061-T6 alloy at room temperature), and appear at a depth of 62.5% thickness at the edge of the tool shoulder in the advancing side of the weld. © 2012 Elsevier Ltd.

Ye T.,Jiangsu University of Science and Technology
Computers and Industrial Engineering | Year: 2012

Shortening manufacturing lead time and then gaining time-based competitive advantages are the goals that many more manufacturing companies want to gain. Lot streaming is one of the important methodologies that can be applied by many companies to gain such advantages. In this paper, we focus on the effects of different types of transfer (i.e.; preceding-operator-based, successive-operator-based, and non-operator-based) between each pair of stages on the optimal number of transfer batches. With regard to those types of transfer, there are 2 × 4 × 2 problems to be analyzed. To simplify the analysis, we refine the problems to three dominating cases. For each dominating problem, the properties of the objective function (i.e.; the makespan) are derived, and the optimal number of transfer batches is determined accordingly. The numerical study illustrates the developed results, and moreover, provides two other important findings. © 2011 Elsevier Ltd. All rights reserved.

Song Y.,Jiangsu University of Science and Technology
PLoS ONE | Year: 2014

De novo sequencing is an important computational approach to determining the amino acid sequence of a peptide with tandem mass spectrometry (MS/MS). Most of the existing approaches use a graph model to describe a spectrum and the sequencing is performed by computing the longest antisymmetric path in the graph. The task is often computationally intensive since a given MS/MS spectrum often contains noisy data, missing mass peaks, or post translational modifications/mutations. This paper develops a new parameterized algorithm that can efficiently compute the longest antisymmetric partial path in an extended spectrum graph that is of bounded path width. Our testing results show that this algorithm can efficiently process experimental spectra and provide sequencing results of high accuracy. © 2014 Yinglei Song.

Song Y.,Jiangsu University of Science and Technology
Theoretical Computer Science | Year: 2014

In this paper, we develop a new parameterized algorithm for the Independent Feedback Vertex Set problem. Given a graph G=(V,E), the goal of the problem is to determine whether there exists a vertex subset F⊆V such that V-F induces a forest in G and F is an independent set. We show that there exists a parameterized algorithm that can determine whether a graph contains an IFVS of size k or not in time O(4kn2). To our best knowledge, this result improves the known upper bound for this problem, which is O(5knO(1)). © 2014 Elsevier B.V.

Chang Z.,Jiangsu University of Science and Technology
Chemical Communications | Year: 2011

A facile and efficient strategy was developed for preparing "firecracker-shaped" ZnO/polyimide (PI) hybrid nanofibers by combining electrospinning and hydrothermal process, which exhibited high photocatalytic activity. © 2011 The Royal Society of Chemistry.

Liu N.,Jiangsu University of Science and Technology
Journal of Non-Crystalline Solids | Year: 2012

On the basis of the gravity difference and the temperature dependence of the interfacial energy of the separated phases, the amalgamation of the droplets of minor phase was affected by Stokes sedimentation and Marangoni motion during the liquid-phase separation. Moreover, the velocity of Stokes motion increased distinctly with the undercooling, while the velocity of Marangoni motion was slightly impacted. At the beginning of the liquid-phase separation, the droplets of minor phase were dominated by Marangoni motion when the droplets radius was small. As the droplets radius increased by combination, the effect of Stokes sedimentation strengthened gradually. Additionally, the coagulation process was mainly controlled by Stokes sedimentation when a critical radius rd was far exceeded. © 2011 Elsevier B.V. All rights reserved.

Zhou S.,Jiangsu University of Science and Technology
International Journal of Computer Mathematics | Year: 2010

Let G be a graph, and let a, b, k be integers with 0ab, k0. An [a, b]-factor of graph G is defined as a spanning subgraph F of G such that adF(x)b for each xV(G). Then a graph G is called an (a, b, k)-critical graph if after deleting any k vertices of G the remaining graph of G has an [a, b]-factor. In this article, a sufficient condition is given, which is a neighborhood condition for a graph G to be an (a, b, k)-critical graph. © 2010 Taylor & Francis.

Ye T.,Jiangsu University of Science and Technology
International Journal of Production Economics | Year: 2014

In this study, we focus on inventory management issues under simultaneously horizontal (equivalently inter-brand) and vertical (equivalently intra-brand) substitution. The analysis is divided into two distinct scenarios: centralized inventory management, where all brands are managed by a central decision maker; and decentralized inventory management, where each brand is managed by an independent decision maker. For the two situations, the optimal and the equilibrium order quantities are developed. Moreover, we find that there exist situations when the order quantities are greater in the centralized setting than in the competitive setting for some products. © 2014 Elsevier B.V.

Zhang A.M.,Harbin Engineering University | Li S.,Harbin Engineering University | Cui J.,Jiangsu University of Science and Technology
Physics of Fluids | Year: 2015

The splitting of a toroidal bubble near a rigid boundary is commonly observed in experiments, which is a quite complex phenomenon in bubble dynamics and still not yet well understood. In present study, the bubble splitting phenomenon is studied using the boundary integral method. The vortex ring model is extended to multiple vortex rings to simulate the interaction between two toroidal bubbles after splitting. Buoyancy and non-buoyancy cases are investigated numerically in this study. Numerical results with buoyancy effects show favorable agreement with the experimental observations, which validates the present model. Generally, the first split of the toroidal bubble occurs when an annular "sideways jet" collides with the other side of the bubble. After the toroidal bubble splitting, some new phenomena are found as follows: (i) An annular high pressure region is generated at the splitting location, and the maximum pressure is associated with the velocity differences between the two sides therein just before splitting. (ii) The total volume varies continuously, while the two sub-bubbles vary differently in volume after splitting. (iii) The sideways jet continues propagating on a sub-bubble surface, which would cause more splits or partial breakup of the splash film into droplets. This may be an important reason for the formation of bubble cloud and the rough bubble surface in the rebounding process. © 2015 AIP Publishing LLC.

Loading Jiangsu University of Science and Technology collaborators
Loading Jiangsu University of Science and Technology collaborators