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Enhanced Network Intrusion Detection using Deep Convolutional Neural Networks
( Sheraz Naseer ),( Yasir Saleem ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.10
Network Intrusion detection is a rapidly growing field of information security due to its importance for modern IT infrastructure. Many supervised and unsupervised learning techniques have been devised by researchers from discipline of machine learning and data mining to achieve reliable detection of anomalies. In this paper, a deep convolutional neural network (DCNN) based intrusion detection system (IDS) is proposed, implemented and analyzed. Deep CNN core of proposed IDS is fine-tuned using Randomized search over configuration space. Proposed system is trained and tested on NSLKDD training and testing datasets using GPU. Performance comparisons of proposed DCNN model are provided with other classifiers using well-known metrics including Receiver operating characteristics (RoC) curve, Area under RoC curve (AuC), accuracy, precision-recall curve and mean average precision (mAP). The experimental results of proposed DCNN based IDS shows promising results for real world application in anomaly detection systems.
A Spiral Curve Gait Design for a Modular Snake Robot Moving on a Pipe
Sheraz Yaqub,Ahmad Ali,Muhammad Usman,Khalil Muhammad Zuhaib,Abdul Manan Khan,안보영,문현기,이지영,한창수 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.10
Modular snake robot has the ability to maneuver narrow, complex, and unstructured environments. In recent years, Snake robot with 3-D locomotion has been studied by researchers for inspection of pipes, and stairs climbing etc. One of the effective approaches to accomplishing such complex tasks is by designing gaits for modular snake robot. In this paper, A Spiral curve gait along with rolling motion is proposed to adapt to the changes in the pipe diameter while moving on the pipe, which cannot be overcome by a simple helical rolling motion. The joint angles are calculated using Bellow’s model, based on the curvature and torsion of the backbone curve. We validated the proposed gait by simulating thirty degrees of freedom modular snake robot in Open Dynamics Engine simulator.
Sheraz Ahmed,심중표,박경세 대한화학회 2024 대한화학회지 Vol.68 No.2
The commercialization of rechargeable metal-air batteries is extremely desirable but designing stable oxygen reduction reaction (ORR) catalysts with non-noble metal still has faced challenges to replace platinum-based catalysts. The nonnoble metal catalysts for ORR were prepared to improve the catalytic performance and stability by the thermal decomposition of ZIF-8 with optimum cobalt loading. The porous carbon was obtained by the calcination of ZIF-8 and different loading amounts of Co nanoparticles were anchored onto porous carbon forming a Co/PC catalyst. Co/PC composite shows a significant increase in the ORR value of current and stability (500 h) due to the good electronic conductive PCN support and optimum cobalt metal loading. The significantly improved catalytic performance is ascribed to the chemical structure, synergistic effects, porous carbon networks, and rich active sites. This method develops a new pathway for a highly active and advantageous catalyst for electrochemical devices.
Ahmed Sheraz,Rim Hyung‐Ryul,Sun Ho‐Jung,Lee Hong‐Ki,Shim Joongpyo,Park Gyungse 대한화학회 2022 Bulletin of the Korean Chemical Society Vol.43 No.5
The application of heteroatom doped cobalt (Ni@Co/C) prepared from a porous metal–organic framework as the cathode material for the rechargeable zinc–air batteries has been demonstrated. The Ni@Co/C-modified electrode showed an excellent catalytic activity toward oxidation–reduction reaction and oxygen evolution reactions. The Co/C catalysts, which were Co particle impregnated on graphitic carbon powders, were synthesized after the calcination of Co3 (SDA)3(DMF)2 precursor, and then Ni deposition (Ni@Co/C) was followed on it by chemical reduction. Linear sweep voltammetry measurement indicates that Ni@Co/C-H800, which had Ni particles on Co/C derived from MOF at 800 C under N2, exhibited excellent performance. The stable charging/discharging profiles at 20 mA cm2 of current were obtained for the 350 h in alkaline medium, suggesting Ni@Co/C-H800 as a potential candidate for oxidation– reduction and evolution reactions.
( Mahshab Sheraz ),( Sangjae Jeong ),( Ali Anus ),( Caroline Mercy Andrew Swamidoss ),( Seungdo Kim ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 한국폐기물자원순환학회 심포지움 Vol.2019 No.1
The catalytic decomposition of HFC-134a was carried out with Alumina and different (wt %) of Magnesium doped alumina at 600°C reaction temperature. The catalyst were calcined at 650°C and their thermal degrading behaviour were determined by using Thermogravimetric analysis for determining the weight loss of Spent-catalysts. For decomposition test of HFC-134a used plug flow reactor connected directly to gas chromatography/mass spectrometry system. Although 99% Conversion rate was achieved and stability was more than 6 hours and less coke formation by using Mg(5)Al<sub>2</sub>O<sub>3</sub>. By the addition of Mg metal in γ-Al<sub>2</sub>O<sub>3</sub> showed crucial role but could not prevented from fluorination. However high amount of metal content can blocked the pores of catalyst and reaction was decreased rapidly. There was also the formation of valuable by-product trifluoroethylene eco-friendly gas as a result of decomposition of high GWP gas HFC-134a. The catalytic activity order of different (wt %) Mg based alumina catalyst is Mg(5)Al<sub>2</sub>O<sub>3</sub> > γ-Al<sub>2</sub>O<sub>3</sub> > Mg(20)Al<sub>2</sub>O<sub>3</sub> > Mg(30)Al<sub>2</sub>O<sub>3</sub> > Mg(70)Al<sub>2</sub>O<sub>3</sub>, respectively.
Mahshab Sheraz,Van Cam Thi Le,김승도 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
Air filtration has become an essential need for passive pollution control particularly, 2019 novel coronavirus. Most of the commercial air purifiers contain fibrous filters, which gave good particulate matter (PM) removal capability but poor microorganism and VOC’s removal efficiency. Herein, we introduced a facile and eco-friendly synthesis of copper coordination polymer particle (Cu-CPP)- decorated on mesoporous Al₂O₃ beads for air pollution control treated with Cu-CPP organic ligands, and Cu species was poured on the Al₂O₃ by hydrothermal method. The composite CuBTC/Al₂O₃ beads exhibited excellent performance with 100% adsorptive capacity of highly carcinogenic VOCs. In addition, the CuBTC/Al₂O₃ revealed a potent inactivation rate of E. coli bacteria with ~99.99% rapid inactivation rate within 20 minutes. The physicochemical properties of CuBTC/Al₂O₃ were studied through (XRD, BET, EDX, TGA) analysis. We believe this work can open a new pathway for designing a practical adsorptive and antimicrobial technology using ubiquitous CuBTC/Al₂O₃ beads in air purifiers could be a game-changer for public health protection.