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Scalable Big Data Pipeline for Video Stream Analytics Over Commodity Hardware
Umer Ayub,Syed M. Ahsan,Shavez M. Qureshi 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.4
A huge amount of data in the form of videos and images is being produced owning to advancements in sensor technology. Use of low performance commodity hardware coupled with resource heavy image processing and analyzing approaches to infer and extract actionable insights from this data poses a bottleneck for timely decision making. Current approach of GPU assisted and cloud-based architecture video analysis techniques give significant performance gain, but its usage is constrained by financial considerations and extremely complex architecture level details. In this paper we propose a data pipeline system that uses open-source tools such as Apache Spark, Kafka and OpenCV running over commodity hardware for video stream processing and image processing in a distributed environment. Experimental results show that our proposed approach eliminates the need of GPU based hardware and cloud computing infrastructure to achieve efficient video steam processing for face detection with increased throughput, scalability and better performance.
Dynamic Response of an Under-water Fuel Transfer System
Umer Hameed Shah,Mingxu Piao,Jae Young Jeon,Keum-Shik Hong 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
This paper discusses the dynamic response of a fuel transfer system that is supposed to transport fuel rods under-water. The under-water fuel transfer system is usually utilized in the process industry and in deep sea for oil transportation from the exploration sites. In both the cases fuel transfer system is exposed to environmental disturbances which define its dynamic response and are detrimental to system’s performance. It is therefore, necessary to study the dynamic response of such a system for its desired application. This paper discusses the problem of studying the dynamic response of a fuel carrying rod that travels along a straight path from one position to another with maximum speed so that, when it reaches the desired position, there is minimal residual vibration (sway). A mathematical model is derived for the system, considering the effects of hydrodynamic forces acting on the fuel carrying rod. An experiment is also conducted to study the dynamic behavior of the rod while it travels under-water and the residual vibrations (sway) at the end point are suppressed using the input shaping technique.
Umer Shahzad,Fengming Qin,Muhammad Umar Farooq 한국사회복지학회 2019 Asian Social Work and Policy Review Vol.13 No.3
This article studies whether the pursuit of foreign aid for counterterrorism purposes militarizes or mitigates terrorism. It focuses on the USAID and official development assistance (ODA) flows to Pakistan, which recently has experienced an increase due to the presence of deadliest terrorist organizations. By using the time series data from 1985 to 2016, the paper investigated the foreign aid and terrorism nexus for pre-9/11 and post-9/11 periods. The empirical estimations of autoregressive distrib-uted lag bound testing approach reported that an increase in military expenditures fuels terrorism in post-9/11 period and the ODA helps to control terrorism from the country. On the contrary, USAID reported insignificant response toward terrorist at-tacks in pre- and post-9/11 periods, suggesting that the foreign aid from the United States has no significant impact on counterterrorism policies for Pakistan. The out-comes of the current study can be utilized in policymaking of counterterrorism and to explore the nexus between foreign aid, terrorism, and military expenditures. The paper concludes that the concerns about the use of foreign aid as counterterrorism tool are warranted, but that actual manifestations are nuanced
Active Vibration Control of a Flexible Rod in Water
Umer Hameed Shah,Mingxu Piao,Gyoung-Hahn Kim,Keum-Shik Hong 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
This paper addresses the vortex-induced vibration (VIV) suppression problem of nuclear fuel rods, which are transported by a refueling machine (RM) to given reactor locations in water. First, Hamilton’s principle is used to develop the equations of coupled motions of the RM and the fuel rod. The resulting equations of the hybrid (lumped-mass RM and distributed-parameter flexible rod) system are then utilized to investigate the VIVs of the fuel rod upon the movements of the RM. Then, a boundary control scheme is developed to suppress the VIVs of the rod in the course of its transportation in water. Furthermore, Lyapunov function-based stability analyses are performed to prove the uniform ultimate boundedness of the closed-loop system, considering the influence of the nonlinear hydrodynamic force acting on the fuel rod. Finally, simulations are performed to demonstrate the effectiveness of the proposed boundary control scheme.