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Articles by Feng Li
Total Records ( 4 ) for Feng Li
  Feng Li , Wang Wei , Zhou Aizhao , Chi Xuchao and Li Zhi
  Concrete pile is widely used as one effective foundation type to strengthen soft soil in geotechnical engineering. Several special cross-section concrete piles are introduced and their defect of poor drainage ability is put forward. Concept of one concrete-gravel composite pile, namely long-concrete short-gravel pile (LCSG pile), is presented in terms of its material composition, bearing mechanism and drainage behavior. What’s more, FEM analysis on the working behavior of the LCSG pile under vertical loading is conducted by using Midas software. Distributions of displacement and stress field of soil around the LCSG pile are mainly discussed. The numerical results show that (a) LCSG pile can make good use of engineering materials to gain good working ability, (b) Increasing the length of outer gravel body can effectively achieve lowering the values of displacement and redistribute the Major Principal Stress (MPS) adjacent to LCSG pile and (c) End grouting is very conducive to reduce the magnitude and gradient of the displacement field and the MPS field. The above research results are available to related engineering design.
  Pei Liang , Ehong Zhao and Feng Li
  A new method for the determination of palladium was developed by dispersive liquid–liquid microextraction preconcentration and graphite furnace atomic absorption spectrometry detection. In the proposed approach, diethyldithiocarbamate (DDTC) was used as a chelating agent, and carbon tetrachloride and ethanol were selected as extraction and dispersive solvent. Some factors influencing the extraction efficiency of palladium and its subsequent determination, including extraction and dispersive solvent type and volume, pH of sample solution, concentration of the chelating agent and extraction time, were studied and optimized. Under the optimum conditions, the enrichment factor of this method for palladium reached at 156. The detection limit for palladium was 2.4ngL−1 (3σ), and the relative standard deviation (R.S.D.) was 4.3% (n=7, c=1.0ngmL−1). The method was successfully applied to the determination of trace amount of palladium in water samples.
  Liu Yao , Kee Shin Woan , Feng Li and Mohd Hanafiah Bin Ahmad
  The growing global economy has intensified the complexity of the discrete but interrelated tasks involved in construction project. In order to achieve project success, the interactions between the team leaders and followers are vital. Taking into consideration the importance of leader to the organization, this study is therefore to examine the relationship between leadership styles (i.e., autocratic, democratic and Laissez-Faire) and employee engagement among the construction industry in Malaysia. Forty sets of questionnaires were collected from the companies registered under the Construction Industry Development Board (CIDB) grade 7, located in Kuantan, Malaysia. The study reveals that the democratic leadership style is more frequently practiced by practitioners than the other two coexisting leadership styles, autocratic and Laissez-Faire. The level of employee engagement in the construction industry shows frequently high. And, the three leadership styles are positively and significantly associated with employee engagement but still the democratic leadership style demonstrates stronger association with the employee engagement. Hence, in order to ensure employees more vigorous, dedicated as well as absorbed in their work, project leaders are suggested to be more trustable, honest, fair and communicative towards their followers.
  Liu Yao , Yan Shao Qin , Sui Hai Juan , Ayodele Ozavize Freida and Feng Li
  Purpose effective leaders have been increasingly regarded conclusive in achieving business success under today’s globalization. The study explores from the perspectives of leader’s personality and leadership style. The 16 personality global factors are adopted to identify the five personality traits including extraversion, anxiety, tough-mindedness, independence and self-control. Leadership styles are targeted at the task-oriented, the relations-oriented and the change-oriented. The 31 pairs of managers and their subordinates from telecommunication industries in Malaysia are invited for respective participation. The results show that) the dominant personality of leaders is extraversion followed by self-control; the most popular leadership style is task-oriented and the task-oriented leadership is line within dependence and self-control for change-oriented leaders they are extravert but less tough-mindedness and for relations-oriented leaders they are extravert and also independent. Future, researches are recommended to broaden the research scope from personality, leadership style to include leadership effectiveness which might be more beneficial for industries to build up their competitiveness. The study established the matrix demonstrating the relationships between each personality and leadership style which can be applied as guidance in industries for recruiting, selecting and promoting suitable person for proper managerial position.
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