待人随和、乐于与中国的媒体交换意见、善于把自己的想法传递给其他人,是他给我的第一印象。初见 Nick Forsyer 先生,感觉他很随和。他从鼓鼓的装满各式各样卡的钱包里,取出名片递给记者,同时伴随着动作幅度很大的手势与肢体语言,还喃...待人随和、乐于与中国的媒体交换意见、善于把自己的想法传递给其他人,是他给我的第一印象。初见 Nick Forsyer 先生,感觉他很随和。他从鼓鼓的装满各式各样卡的钱包里,取出名片递给记者,同时伴随着动作幅度很大的手势与肢体语言,还喃喃地解释说新名片已经用完了,但这张名片上的职务与联系方式都是正确的。待人随和、乐于与中国的媒体变换意见、善于把自己的想法传递给其他人,是他给我的第一印象。随着交谈的深入我发现,展开更多
In the traditional pipeline magnetic flux leakage(MFL)detection technology,circumferential or axial excitation is mainly used to excite the magnetic field of defects.However,the domestic and foreign pipeline detection...In the traditional pipeline magnetic flux leakage(MFL)detection technology,circumferential or axial excitation is mainly used to excite the magnetic field of defects.However,the domestic and foreign pipeline detection devices currently in operation are mainly axial excitation MFL detection tools,in which circumferential cracks can be clearly identified,but the detection sensitivity of axial cracks is not high,thus forming a detection blind zone.Therefore,a composite excitation multi-extension direction defect MFL detection method is proposed,which can realize the simultaneous detection of axial and circumferential defects.On the basis of the electromagnetic theory Maxwell equation and Biot Savart law,a mathematical model of circumferential and axial magnetization is firstly established.Then finite element simulation software is used to establish a model of a new type of magnetic flux leakage detection device,and a simulation analysis of crack detection in multiple extension directions is carried out.Finally,under the conditions of the relationship model between the change rate of leakage magnetic field and external excitation intensity under unsaturated magnetization and the multi-stage coil magnetization model,the sample vehicle towing experiment is carried out.The paper aims to analyze the feasibility and effectiveness of the new magnetic flux leakage detection device for detecting defects in different extension directions.Based on the final experimental results,the new composite excitation multi extension direction leakage magnetic field detector has a good detection effect for defects in the axial and circumferential extension directions.展开更多
The concept of construction productivity and the needs for incentive schemes towards improving the performance of Artisan has long been established. The choice of particular scheme either financial or non financial an...The concept of construction productivity and the needs for incentive schemes towards improving the performance of Artisan has long been established. The choice of particular scheme either financial or non financial and to what level it contributes to the productivity of employees remain at stake. Therefore, this study set to evaluate the level of awareness, impact and contribution of the schemes with more emphasis to the non financial incentive schemes. A questionnaire survey involving management and artisans of the three tiers of NCl （Nigerian Construction Industry）： large, medium and small within Kaduna and Abuja Nigeria was conducted. Three hundred （300） responses from the management and artisans were used for analysis, inferences and conclusions. The survey result revealed that non-financial incentive schemes are mostly employed in the large and medium scale construction firms. Though, preference by medium and small scale firms was based on those that do not require fund to implement and maintain. It was concluded that, construction firms operating in Nigeria ought to strive more towards implementing non-financial incentive in their organization since artisans are willing to improve their output.展开更多
Corporate governance represents institutional structures and incentive mechanisms that are implemented in order to mitigate the principal-agent problem and to thus promote the long-term competitiveness of the firm. Th...Corporate governance represents institutional structures and incentive mechanisms that are implemented in order to mitigate the principal-agent problem and to thus promote the long-term competitiveness of the firm. The purpose of this paper is to examine the nature of corporate governance best practice and the new listing rules in Sri Lanka. The paper discusses the evolution of the corporate governance best practice giving special reference to the new listing rules in Sri Lanka, Sri Lankan stock market overview and the importance of best practice governance for the developing economy of Sri Lanka. Corporate governance practices in Sri Lanka has made a progress towards best practice, but, this paper argues, that substantial reforms need to be implemented to effectively promote and sustain the accountability and transparency.展开更多
文摘待人随和、乐于与中国的媒体交换意见、善于把自己的想法传递给其他人,是他给我的第一印象。初见 Nick Forsyer 先生,感觉他很随和。他从鼓鼓的装满各式各样卡的钱包里,取出名片递给记者,同时伴随着动作幅度很大的手势与肢体语言,还喃喃地解释说新名片已经用完了,但这张名片上的职务与联系方式都是正确的。待人随和、乐于与中国的媒体变换意见、善于把自己的想法传递给其他人,是他给我的第一印象。随着交谈的深入我发现,
基金National Natural Science Foundation of China(No.51804267)State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing(No.PRP/open-1610)。
文摘In the traditional pipeline magnetic flux leakage(MFL)detection technology,circumferential or axial excitation is mainly used to excite the magnetic field of defects.However,the domestic and foreign pipeline detection devices currently in operation are mainly axial excitation MFL detection tools,in which circumferential cracks can be clearly identified,but the detection sensitivity of axial cracks is not high,thus forming a detection blind zone.Therefore,a composite excitation multi-extension direction defect MFL detection method is proposed,which can realize the simultaneous detection of axial and circumferential defects.On the basis of the electromagnetic theory Maxwell equation and Biot Savart law,a mathematical model of circumferential and axial magnetization is firstly established.Then finite element simulation software is used to establish a model of a new type of magnetic flux leakage detection device,and a simulation analysis of crack detection in multiple extension directions is carried out.Finally,under the conditions of the relationship model between the change rate of leakage magnetic field and external excitation intensity under unsaturated magnetization and the multi-stage coil magnetization model,the sample vehicle towing experiment is carried out.The paper aims to analyze the feasibility and effectiveness of the new magnetic flux leakage detection device for detecting defects in different extension directions.Based on the final experimental results,the new composite excitation multi extension direction leakage magnetic field detector has a good detection effect for defects in the axial and circumferential extension directions.
文摘The concept of construction productivity and the needs for incentive schemes towards improving the performance of Artisan has long been established. The choice of particular scheme either financial or non financial and to what level it contributes to the productivity of employees remain at stake. Therefore, this study set to evaluate the level of awareness, impact and contribution of the schemes with more emphasis to the non financial incentive schemes. A questionnaire survey involving management and artisans of the three tiers of NCl （Nigerian Construction Industry）： large, medium and small within Kaduna and Abuja Nigeria was conducted. Three hundred （300） responses from the management and artisans were used for analysis, inferences and conclusions. The survey result revealed that non-financial incentive schemes are mostly employed in the large and medium scale construction firms. Though, preference by medium and small scale firms was based on those that do not require fund to implement and maintain. It was concluded that, construction firms operating in Nigeria ought to strive more towards implementing non-financial incentive in their organization since artisans are willing to improve their output.
文摘Corporate governance represents institutional structures and incentive mechanisms that are implemented in order to mitigate the principal-agent problem and to thus promote the long-term competitiveness of the firm. The purpose of this paper is to examine the nature of corporate governance best practice and the new listing rules in Sri Lanka. The paper discusses the evolution of the corporate governance best practice giving special reference to the new listing rules in Sri Lanka, Sri Lankan stock market overview and the importance of best practice governance for the developing economy of Sri Lanka. Corporate governance practices in Sri Lanka has made a progress towards best practice, but, this paper argues, that substantial reforms need to be implemented to effectively promote and sustain the accountability and transparency.
