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| 1 | Origin of the regional stress field along the Liquine-Ofqui Fault Zone(LOFZ),Southern Chilean Andes by means of FE Simulation显示文摘The Liquine-Ofqui Fault Zone(LOFZ) of southern Chilean Andes is one of the largest active strike-slip fault zones.There is an ongoing debate regarding the origin of the stress field along the LOFZ due to its complex geometry.This paper represents a study of the origins of the LOFZ regional stress field.Stress fields are calculated by finite element(FE) analysis.The two possible stress origins, i.e., oblique plate convergence and ridge collision/indenter tectonics of Chile ridge against Peru-Chile trench, have been emphasized in the present study.Three types of boundary conditions for the three particular models have been applied to calculate stress fields.Models are assumed to be elastic and plane stress condition.Modeling results are presented in terms of four parameters, i.e., orientation of maximum horizontal stress(σ H max ), displacement vector, s train distribution, and maximum shear stress(τmax ) contour line within the model.The results of the first model with oblique plate convergence show inconsistency between the geometric shape of the LOFZ and the distribution of the four parameters.Although more realistic results are obtained from the second model with normal ridge collision, there are few coincident in the LOFZ geometry and regional stress field.The third model with normal and oblique ridge collision is reasonable in understanding the origin of stress field and geometrical condition in the lithosphere of the LOFZ. | Md.Rafiqul Islam | 2009 | Journal of Mountain Science2009，6，1： | 2 |
| 2 | Research on infectious bursal disease—the past, the present and the future显示文摘 | Hermann Müller Md.Rafiqul Islam Rüdiger Raue | 2003 | Veterinary Microbiology2003，，1： | 2 |
| 3 | Improved voltage tracking of autonomous microgrid technology using a combined resonant controller with lead-lag compensator adopting negative imaginary theorem显示文摘Growing application of distributed generation units at remote places has led to the evolution of microgrid(MG)technology.When an MG system functions independently,i.e.,in autonomous mode,unpredictable loads and uncertainties emerge throughout the system.To obtain stable and flexible operation of an autonomous MG,a rigid control mechanism is needed.In this paper,a robust high-performance controller is introduced to improve the performance of voltage tracking of an MG system and to eliminate stability problems.A combination of a resonant controller and a lead-lag compensator in a positive position feedback path is designed,one which obeys the negative imaginary(NI)theorem,for both single-phase and three-phase autonomous MG systems.The controller has excellent tracking performance.This is investigated through considering various uncertainties with different load dynamics.The feasibility and effectiveness of the controller are also determined with a comparative analysis with some well-known controllers,such as linear quadratic regulator,model predictive and NI approached resonant controllers.This confirms the superi-ority of the designed controller. | Md.Yah-Ya Ul Haque Md.Rashidul Islam Tanvir Ahmed Md.Rafiqul Islam Sheikh | 2022 | Protection and Control of Modern Power Systems2022，7，1： | 2 |
| 4 | Research on infectious bursal disease—the past, the present and the future显示文摘 | Hermann Müller Md.Rafiqul Islam Rüdiger Raue | 2003 | Veterinary Microbiology2003，，1： | 2 |
| 5 | Optimization of Slope Angle and Its Seismic Stability: A Case Study for the Proposed Open Pit Coalmine in Phulbari,NW Bangladesh显示文摘The present study reflects upon the results of substantial program of two-dimensional Finite Element Method(FEM) numerical analyses of the open pit that links to slope angle optimization associated with the safety factor of the pit slope of a coal mine in Bangladesh. In the present analyses, two types of models have been presented. The first model estimates safety factor without seismic effect on the overall pit slope of the model; the second model incorporates safety factor with seismic stability of the model. The calculated optimum slope angle of the first model is 31owith a rational safety factor of 1.51,prior to the seismic effect. However, the value is reduced to 0.93, 0.82, and 0.72, after we applies the seismic effect in the second model with M6, M6.5, and M7, respectively. Finally, our modeling results emphasize that for the case of the proposed Phulbari coalmine, there is extremely high prospect for causing massive slope failure along the optimum pit slope angle with 31oif the mine area felt seismic shaking,like the Sikkim(in northern India) earthquake with M6.9 on September 18, 2011. | Md.Rafiqul ISLAM Mohammed Omar FARUQUE | 2013 | Journal of Mountain Science2013，10，6： | 1 |
| 6 | Development of Wi-Fi Based Home Energy Monitoring System for Green Internet of Things显示文摘Green Internet of things(Io T) has been heralded as the 'next big thing' waiting to be realized in energy-efficient ubiquitous computing. Green Io T revolves around increased machine-to-machine communications and encompasses energy-efficient wireless embedded sensors and actuators that assist in monitoring and controlling home appliances. Energy efficiency in home applications can be achieved by better monitoring of the specific energy consumption by the appliances. There are many wireless standards that can be adopted for the design of such embedded devices in Io T. These communication technologies cater to different requirements and are classified as the short-range and long-range ones. To select the best communication method, this paper surveys various Io T communication technologies and discusses the advantages and disadvantages to develop an energy monitoring system. An Io T device based on the Wi-Fi technology system is developed and tested for usage in the home energy monitoring environment. The performance of this system is then evaluated by the measurement of power consumption metrics. In the efficient deep-sleep mode, the system saves up to 0.3 W per cycle with an average power dissipation of less than 0.1 W/s. | Mohamed Hadi Habaebi Qazi Mamoon Ashraf Amir Alif Bin Azman Md.Rafiqul Islam | 2016 | Journal of Electronic Science and Technology2016，14，3： | 1 |
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