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Framework for fault-tolerant speed tracking control of gasoline engines using the first principle-based engine model

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Journal of Control and Decision 2023年第4期10卷 560-571页

作者： raheel Anjum ahmed Yar Ghulam Murtaza Qadeer ahmed Aamer I.Bhatti Controls and Signal Processing Research Group(CASPR) Capital University of Science and TechnologyIslamabadPakistan Department of Mechanical Engineering College of E&MENational University of Sciences and TechnologyIslamabadPakistan Center for Automotive Research The Ohio State UniversityColumbusOHUSA Department of Electrical Engineering Capital University of Science and TechnologyIslamabadPakistan

Optimal engine torque management,a fundamental objective,depends predominantly on engine speed tracking *** ensures to attain desired speed profile in the presence of uncertainties,disturbances and *** the other hand,certain requirements such as emissions control,fuel efficiency and drivability are degraded in case of poorspeed ***,constraints on engine speed tracking performance are even more stringent for hybrid power-train architecture as crankshaft speed and engine torque are the basic variables for coordinated *** tracking is also considered essential for gearshift control ofthe automatic *** this research work,a framework for fault-tolerant speed tracking of the gasoline engine is proposed using the First Principle-based Engine Model(FPEM).A high-fidelity direct relationship between fuel injection input and engine speed is derived by the transformation of *** is induced in the fuel injection subsystem to generate the torque *** the proposed framework,a second-order sliding mode-based control technique is applied to track desired speed profile by mitigating the faultsin the fuel injection *** data acquired from the engine test rig is used to demonstrate the offline validity and fault tolerance capabilities of the proposed framework in MATLAB/Simulink.

关键词： Engine speed tracking fault-tolerant control gasoline engines sliding mode control

Effects of plastic sheet on water saving and yield under furrow irrigation method in semi-arid region

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International Journal of Agricultural and Biological Engineering 2018年第1期11卷 172-177页

作者： Muhammad Sohail memon Kausar Ali Altaf Ali Siyal Jun Guo Shamim Ara memon Shakeel ahmed Soomro Noreena memon Changying Ji College of Engineering Nanjing Agricultural UniversityNanjing 210031China Faculty of Agricultural Engineering Sindh Agriculture University Tandojam 70060Pakistan U.S.-Pakistan Center for Advanced Studies in Water(USPCAS-W) Mehran University of Engineering and TechnologyJamshoroSindh 76062Pakistan Yancheng Vocational Institute of Industry Technology Yancheng 224005China

The increasing demand of water in the country highlights the need to introduce low-input and water saving technologies for agricultural sustainability and crop production,mainly in semi-arid region.A study was conducted to minimize deep percolation losses from the furrow bottom under two different irrigation treatments viz.(1)furrow bottom with plastic sheet(T1)and(2)furrow bottom without plastic Sheet(T0).The physical and chemical analyses of soil profile were taken at a depth of 0-80 cm before and after crop *** dry density of soil slightly increased(0.01 g/cm^(3))under both treatments,while soil pH decreased under *** average yield was 8332 kg/hm^(2) and 7575 kg/hm^(2),with 21.56 m^(3) and 31.09 m^(3) total volume of irrigation water applied under T1and T0,*** saving percentages of water under treatments were 52.22% and 31.00% under T1 and T0 respectively as compared to the saving of water under traditional irrigation ***,better performance,in terms of crop production and water saving,was obtained with use of plastic sheet integrated with bottom of ***,it is suggested that the furrow irrigation method with plastic sheet may be used to preventing moisture and minimize deep percolation losses from furrow bottom.

关键词： furrow irrigation semi-arid region water saving yield plastic sheet deep percolation okra crop soil pH

Study on Mutation Profile and Frequency of EGFR Exon 19 in Chinese Patients with Non-Small Cell Lung Cancer

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Study on Mutation Profile and Frequency of EGFR Exon 19 in C...

作者： AADIL ahmed memon 上海交通大学

学位级别：硕士

Lung cancer is the serious health concern and leading cause of cancer deaths around the ***-small cell lung cancer（NSCLC）contributes 70-80% of lung *** accounts for 50% and squamous cell carcinoma（SCC）22-30% of all *** Kinase Inhibitors（TKIs）are recommended as first line treatment for advanced NSCLC recently and significantly improves the treatment outcomes of lung adenocarcinoma patients with EGFR ***,the application of TKI for lung squamous cell carcinoma（SCC）,second largest pathological subtype of NSCLC,remains controversial because available data of EGFR mutation profile and frequency in SCC patients is *** this study,first 89 bronchoscopies-biopsy specimens from Chinese SCC male patients were assayed for EGFR exon 19 mutation by improved *** exon 19 mutations were detected in 77 of the 89（86.5%）patients,including six kinds of point mutations（11.6%）and two deletions Del

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Synthesis, Crystal Structure and Antimicrobial Activity of {[Bis(pyridine-κN)bis(3,5-dinitrosalicylato κ-O,O')Zn(Ⅱ)][bis(pyridine-κN)Zn(Ⅱ)]}

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Chinese Journal of Structural Chemistry 2016年第5期35卷 705-712页

作者： CHANG Fouzia memon Najma ahmed Muhammad Naeem TAHIR Muhammad Nawaz memon Shahabuddin CHANG Abdul Sattar BHANGER Muhammad Iqbal CHANDIO Anwer National Centre of Excellence in Analytical Chemistry University of Sindh Department of Chemistry The University of Azad Jammu and Kashmir Department of Physics University of Sargodha HEJ Research Institute of Chemistry ICCBS University of Karachi

A novel {[bis（pyridine-κN）bis（3,5-dinitrosalicylato κ-O,O＇）Zn（Ⅱ）][bis（pyridine-κN）Zn（Ⅱ）]}（C_（34）H_（24）N_8O_（14）Zn_2） was synthesized by a self-assemble method at room temperature. The molecular structure was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system, space group P2_1/n with a = 12.2156, b = 13.5696, c = 22.5602 A, β = 90.061o, Z = 4 and V = 3739.6（3）A^3. The new 1D binuclear coordination polymer {[bis（py-κN）bis（3,5-dinitrosal κ-O,O′） Zn（Ⅱ）][bis（py-κN）Zn（Ⅱ）]} resulted from two different types of moieties. The polymer [bis（py-κN）bis（3,5-dinitrosal κ-O,O′）Zn（Ⅱ）] unit is connected with [bis（py-κN） Zn（Ⅱ）] by zigzag topology. One zinc（Ⅱ） cation has a six-fold coordination environment, in which the metal atom is connected with four oxygen atoms of two 3,5-dinitrosalicylic acids to form equatorial bonds and two nitrogen atoms of pyridine to generate the axial bonds. Other four-fold nucleus contain two Zn-O bonds from different 3,5-dinitrosalicylic acids and two bonds with the Natom of pyridine. Antimicrobial assay results indicated that the compound showed moderate activities against different bacterial and fungal strains.

关键词： crystal structure antimicrobial pyridine C-H…π interactions

Bioinspired Multi-material Polyjet-printed Frog Robot for Synchronous and Asynchronous Swimming

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Journal of Bionic Engineering 2023年第3期20卷 923-933页

作者： Afaque Manzoor Soomro Jae-Wook Lee Fida Hussain memon Faheem ahmed Kashif Hussain Kyung Hyun Choi Department of Mechatronics Engineering Jeju National UniversityJeju63243South Korea Department of Electrical Engineering Sukkur IBA UniversitySukkur65200Pakistan

This paper proposes the bioinspired soft frog robot. All printing technology was used for the fabrication of the robot. Polyjet printing was used to print the front and back limbs, while ultrathin filament was used to print the body of the robot, which makes it a complete soft swimming robot. Dual thrust generation approach has been proposed by embedding the main muscle and antagonistic muscle in all the limbs, which enables it to attain high speed (18 mm/s), significant control to swim in dual mode (synchronous and asynchronous modes). To achieve the swimming motion of frog, four SMA (BMF 300) muscle wires were used. The frog robot is named as (FROBOT). The hind limbs are 60 mm long and 10 mm thick on average, while the front limbs are 35 mm long and 7 mm thick. Model-based design and rigorous analysis of the dynamics of real frogs have allowed FROBOT to be developed to swim at a level that is remarkably consistent with real frogs. Electrical and mechanical characteristics have been performed. In addition, the test data were further processed using TRACKER to analyze angle, displacement and velocity. FROBOT (weighs 65 g) can swim at different controllable frequencies (0.5–2 Hz), can rotate in any direction on command from custom built LabVIEW software allowing it to swim with speed up to 18 mm/s on deep water surface (100 cm) with excellent weight balance.

关键词： Bioinspired Soft robotics Frog FROBOT Asynchronous swimming

General election effect on the network topology of Pakistan’s stock market: network-based study of a political event

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Financial Innovation 2020年第1期6卷 42-55页

作者： Bilal ahmed memon Hongxing Yao Rabia Tahir School of Finance and Economics Jiangsu University01 Xuefu RoadZhenjiang 212013JiangsuChina School of Computer Science Jiangsu universityZhenjiang 212013China

To examine the interdependency and evolution of Pakistan’s stock market,we consider the cross-correlation coefficients of daily stock returns belonging to the blue chip Karachi stock exchange(KSE-100)*** the minimum spanning tree network-based method,we extend the financial network literature by examining the topological properties of the network and generating six minimum spanning tree networks around three general elections in *** results reveal a star-like structure after the general elections of 2018 and before those in 2008,and a tree-like structure *** also highlight key nodes,the presence of different clusters,and compare the differences between the three ***,the sectorial centrality measures reveal economic expansion in three industrial sectors—cement,oil and gas,and ***,a strong overall intermediary role of the fertilizer sector is *** results indicate a structural change in the stock market network due to general ***,through this analysis,policy makers can focus on monitoring key nodes around general elections to estimate stock market stability,while local and international investors can form optimal diversification strategies.

关键词： Minimum spanning tree Centrality measures General elections Emerging market Pakistan Stock market network

Dose calcium channel blocker verapamil decrease urinary VMA levels in sympathoadrenal hyperactive patients with posttraumatic stress disorder?

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Asian Pacific Journal of Tropical Medicine 2008年第4期1卷 36-39页

作者： Munawar Alam Ansari Shahida P.ahmed Zahida memon Department of Pharmacology Liaquat University of Medical & Health SciencesJamshoroPakistan Department of Pharmacology Karachi UniversityKarachiPakistan Department of Pharmacology Dow University of Health SciencesKarachiPakistan

Objective:The majority of the patients with posttraumatic stress disorders(PTSD) embrace augmented urinary flow of Vanillylmandelic Acid(VMA) than normal subjects owing to superior sympathetic doings,which steer to cardiovascular *** flow of VMA was evaluated as sympathoadrenal bustle marker in patients with posttraumatic stress *** ion shows a noteworthy dependability in nervousness owing to its special effects on brain *** this study was conducted to explore the effects of Verapamil on sympathoadrenal motion in patients with ***:Placebo controlled clinical tryout was conducted. At first hundred(100) PTSD patients were chosen and enrolled in the study,from department of Psychological Medicine Dow University of Health Sciences,*** 120 mg/day was specified in divided doses to group-Ⅰ(n=50)patients and group-Ⅱ(n =50) patients received placebo therapy on a daily basis for nine *** and every patient was monitored weekly,all the way through extent of ***:Underneath the posttraumatic stress disorder,urinary excretion of VMA was *** channel blocker verapamil additionally abolished the embellished retort in urinary flow of VMA appreciably in patients with PTSD. Conclusion:Verapamil was experiential to be exceedingly effectual *** reduces VMA levels in urine, and on the whole cardiovascular threat in PTSD patients.

关键词： PTSD Sympathetic activity Urinary VMA and verapamil

Residual effects of tobacco biochar along with different fixing agents on stabilization of trace elements in multi-metal contaminated soils

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Journal of Environmental Sciences 2020年第1期32卷 299-309页

作者： Altaf Hussain Lahori Monika Mierzwa-Hersztek Muhammad Rashid Shahmir Ali Kalhoro Mehrunisa memon Zobia Naheed Muneer ahmed Zengqiang Zhang College of Natural Resources and Environment Northwest A&F UniversityYanglingShannxi 712100China Department of Environmental Sciences Sindh Madressatul Islam UniversityKarachiPakistan Department of Agricultural and Environmental Chemistry University of Agriculture in KrakowalMickieivicza 2131-120KrakowPoland Faculty of Agriculture Lasbela University of AgricultureWater and Marine SciencesUthal 90150Pakistan Department of Soil Science Sindh Agriculture UniversityTandojamPakistan Agriculture Research Station BaffaMansehraKhyber PakhtunkhwaPakistan

The residual effect of tobacco biochar(TB≥500°C)mono and co-application with Cahydroxide(CH),Ca-bentonite(CB)and natural zeolite(NZ)on the bio-availability of trace elements TE(s)in alkaline soils has not been deeply studied yet.A pot study that had earlier been investigated TB mono and blended with CH,CB and NZ on the immobilization of Pb,Cu Cd,and Zn by Chinese *** crop in the rotation was selected as test plant to assess the residual impact of amendments on stabilization of Pb,Cu Cd,and Zn in mine polluted(M-P),smelter heavily and low polluted(S-HP and S-LP,respectively)*** obtained results showed that stabilization of Pb,Cd,Cu and Zn reached 63.84% with TB+CB,61.19% with TB+CH,83.31% with TB+CH and 35.27% with TB+CH for M-P soil,36.46% with TB+NZ,38.46% with TB+NZ,19.40% with TB+CH and 62.43% with TB+CH for S-LP soil,52.94%TB+NZ,57.65% with TB+NZ,52.94% with TB+NZ,and 28.44% with TB+CH for S-LP ***,TB+CH and TB alone had mobilized Pb and Zn up to19.29% and 34.96% in M-P *** mobility of Zn reached 8.38% with TB+CB and 66.03% with TB for S-HP and S-LP *** uptake and accumulation of Pb,Cd,Cu and Zn in shoot and root were reduced in three polluted ***,the combination of TB along with CH,CB and NZ has been proven to be effective in Pb,Cd,Cu and Zn polluted mine/smelter soils restoration.

关键词： Tobacco biochar Residual effect Trace elements stabilization Maize Soil remediation

Multi-material Bio-inspired Soft Octopus Robot for Underwater Synchronous Swimming

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Journal of Bionic Engineering 2022年第5期19卷 1229-1241页

作者： Faheem ahmed Muhammad Waqas Bushra Shaikh Umair Khan Afaque Manzoor Soomro Suresh Kumar Hina Ashraf Fida Hussain memon Kyung Hyun Choi Department of Mechatronics Engineering Jeju National UniversityJeju 63243South Korea Department of Electrical Engineering Sukkur IBA UniversityAirport RoadSukkur 65200SindhPakistan Advanced Micro Mechatronics and Energy Lab Sukkur IBA UniversitySukkur 65200Pakistan Department of Ocean Sciences Jeju National UniversityJeju 63243South Korea

Inspired by the simple yet amazing morphology of the Octopus, we propose the design, fabrication, and characterization of multi-material bio-inspired soft Octopus robot (Octobot). 3D printed molds for tentacles and head were used. The tentacles of the Octobot were casted using Ecoflex-0030 while head was fabricated using relatively flexible material, i.e., OOMOO-25. The head is attached to the functionally responsive tentacles (each tentacle is of 79.12 mm length and 7 void space diameter), whereas Shape Memory Alloy (SMA) muscle wires of 0.5 mm thickness are used in Octobot tentacles for dual thrust generation and actuation of Octobot. The tentacles were separated in two groups and were synchronously actuated. Each tentacle of the developed Octobot contains a pair of SMA muscles (SMA-α and SMA-β). SMA-α muscles being the main actuator, was powered by 9 V, 350 mA power supply, whereas SMA-β was used to provide back thrust and thus helps to increase the actuation frequency. Simulation work of the proposed model was performed in the SolidWorks environment to verify the vertical velocity using the octopus tentacle actuation. The design morphology of Octobot was optimized using simulation and TRACKER software by analyzing the experimental data of angle, displacement, and velocity of real octopus. The as-developed Octobot can swim at variable frequencies (0.5–2 Hz) with the average speed of 25 mm/s (0.5 BLS). Therefore, the proposed soft Octopus robot showed an excellent capability of mimicking the gait pattern of its natural counterpart.

关键词： Bio-inspired Octopus Octobot Sub-surface Soft robotics Swimming