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Overdriven Detonation and Its Application in Shaped Charges

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Journal of Beijing Institute of Technology 2017年第1期26卷 9-15页

作者： tariq Hussain Yan Liu Fenglei Huang State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China

Overdriven detonation（ODD）in high explosives can be generated by Mach reflection of conical detonation waves propagating quasi-steadily in a co-axial double layer cylindrical *** inner core of the charge consists of lower detonation velocity explosive with higher detonation velocity explosive for the outer *** calculated pressures and detonation velocities in the ODD regime are compared with available results in the *** application of this technique to design a double layer shaped charge（DLSC）is numerically *** was discovered that the use of lower density-lower detonation velocity explosive in the inner core of DLSC can also yield similar results to those obtained with high density lower detonation velocity *** analyzing previous experimental results and comparing with present simulations,it is demonstrated that ordinary shaped charges have some advantages over DLSC under certain conditions.

关键词： overdriven detonation double-layer shaped charge jet formation

Non-Associative Algebra Redesigning Block Cipher with Color Image Encryption

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Computers, Materials & Continua 2021年第4期67卷 1-21页

作者： Nazli Sanam Asif Ali tariq Shah Ghazanfar Farooq Department of Mathematics Quaid-i-Azam UniversityIslamabad44000Pakistan Department of Computer Science Quaid-i-Azam UniversityIslamabad44000Pakistan

The substitution box(S-box)is a fundamentally important component of symmetric key *** S-box is a primary source of non-linearity in modern block ciphers,and it resists the linear *** approaches have been adopted to construct S-boxes.S-boxes are commonly constructed over commutative and associative algebraic structures including Galois fields,unitary commutative rings and cyclic and non-cyclic finite *** this paper,first a non-associative ring of order 512 is obtained by using computational techniques,and then by this ring a triplet of 8×8 S-boxes is *** motivation behind the designing of these S-boxes is to upsurge the robustness and broaden the key space due to non-associative and noncommutative behavior of the algebraic structure under consideration.A novel color image encryption application is anticipated in which initially these 3 S-boxes are being used to produce confusion in three layers of a standard RGB ***,for the sake of diffusion 3D Arnold chaotic map is used in the proposed encryption scheme.A comparison with some of existing chaos and S-box dependent color image encryption schemes specs the performance results of the anticipated RGB image encryption and observed as approaching the standard prime level.

关键词： Block cipher s-box nonlinearity color image encryption 3D chaotic map

A new generalized version of Log-logistic distribution with applications in medical sciences and other applied fields

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第5期9卷 140-161页

作者： Bilal Ahmad Para tariq Rashid Jan Department of Statistics University of Kashmir Srinagar Jammu and KashmirIndia

In this paper,we studied a two-parameter transmuted model of Log-logistic distribution(LLD)using the quadratic rank transmutation map technique studied by Shaw and Buckley1 as a new survival model in medical sciences and other applied *** properties of Transmuted LLD(TLLD)are discussed *** measures of skewness and kurtosis of the proposed model have also been discussed along with graphical *** estimation of the model parameters is performed by Maximum Likelihood(ML)method followed by a Monte Carlo(MC)simulation procedure to investigate the performance of the ML estimators and the asymptotic confidence intervals of the *** of the proposed model to real-life data are also presented.

关键词： Transmuted Log-logistic distribution(TLLD) survival analysis lifetime medical sciences Monte Carlo simulation.

Improving the polarisation and depolarisation current measuring method to avoid ground wire interference

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High Voltage 2022年第5期7卷 847-855页

作者： Fan Yang Kai Zhou Shakeel Akram Muhammad tariq Nazir School of Electrical Engineering and Electronic Information Xihua UniversityChengduChina College of Electrical Engineering Sichuan UniversityChengduSichuanChina School of Electrical Engineering and Telecommunications University of New South WalesSydneyNew South WalesAustralia

The ground wire is significantly interfered by the current above 1μA in the industrial field during the traditional polarisation and depolarisation current(PDC)*** paper explains a method to test PDC from high-voltage wire using a principle of equipotential picoammeter,which is completely isolated from the ground wire and connected in series with the high voltage *** this method,a device is designed with a multi-range automatic switching *** device can automatically switch the test range current from 1 pA to 10 mA with a resolution of 1 *** demonstrate the device and effectiveness of this new method,the traditional and the proposed new device are used to test the PDC of cable samples in the laboratory as well as in an industrial *** is worth noting that there is almost no interference on the Earth wire in the laboratory environment but massive interference in the industrial environment using a traditional method of PDC measurement from ground or Earth *** new method of high-voltage testing can efficiently eliminate the interference and accurately measure PDC in a strong industrial interference ***,the wiring of this new method and device is relatively simple,which is convenient for industrial applications.

关键词： ground polar method

MHD peristaltic flow in an inclined channel with heat and mass transfer

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International Journal of Biomathematics 2016年第1期9卷 191-205页

作者： Maryiam javed T. Hayat A. Alsaedi Department of Applied Mathematics and Statistics Institute of Space Technology P. O. Box 2750 Islamabad 44000 Pakistan Department of MathematicsQuaid-i-Azam University Islamabad 44000 Pakistan NAAM Research Group Department of MathematicsKing Abdulaziz University Jeddah 21589 Saudi Arabia

This paper addresses the peristaltic flow of magnetohydrodynamic viscous fluid in an inclined compliant wall channel. Different wave amplitudes and phases ensure asymme- try in the channel flow configuration. Simultaneous effects of heat and mass transfer are also considered. Viscous dissipation effect is present. The flow and heat transfer are investigated under long wavelength and low Reynolds number assumption. The expres- sions for stream function, axial velocity, temperature and concentration are obtained. The solution expressions for physical quantities are sketched and discussed. It is found that Brinkman and Hartman numbers have reverse effect on the temperature.

关键词： Inclined channel compliant wall viscous dissipation MHD.

Underground communication:Long non-coding RNA signaling in the plant rhizosphere

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Plant Communications 2024年第7期5卷 28-51页

作者： Muhammad Fahad Leeza tariq Sajid Muhammad Liang Wu Hainan Institute Zhejiang UniversitySanyaHainan 572000China Zhejiang Provincial Key Laboratory of Crop Genetic Resources College of Agriculture and BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China National Key Laboratory for Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhou 310058China

Long non-coding RNAs(lncRNAs)have emerged as integral gene-expression regulators underlying plant growth,development,and *** adapt to the heterogeneous and dynamic rhizosphere,plants use interconnected regulatory mechanisms to optimally fine-tune gene-expression-governing interactions with soil biota,as well as nutrient acquisition and heavy metal ***,high-throughput sequencing has enabled the identification of plant lncRNAs responsive to rhizosphere biotic and abiotic ***,we examine lncRNA biogenesis,classification,and mode of action,highlighting the functions of lncRNAs in mediating plant adaptation to diverse rhizosphere *** then discuss studies that reveal the significance and target genes of lncRNAs during developmental plasticity and stress responses at the rhizobium interface.A comprehensive understanding of specific lncRNAs,their regulatory targets,and the intricacies of their functional interaction networks will provide crucial insights into how these transcriptomic switches fine-tune responses to shifting rhizosphere *** ahead,we foresee that single-cell dissection of cell-type-specific lncRNA regulatory dynamics will enhance our understanding of the precise developmental modulation mechanisms that enable plant rhizosphere *** future challenges through multi-omics and genetic approaches will more fully reveal the integral roles of lncRNAs in governing plant adaptation to the belowground environment.

关键词： biotic and abiotic cues heavy metals long non-coding RNAs nutrients phytoremediation rhizosphere microbiome

Nitro-tetrazole based high performing explosives:Recent overview of synthesis and energetic properties

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Defence Technology（防务技术） 2021年第6期17卷 1995-2010页

作者： Saira Manzoor Qamar-un-nisa tariq Xin Yin Jian-Guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

Heterocyclic skeleton(Azoles)and different energetic groups containing high performing explosives are highly emerged in recent years to meet the challenging requirements of energetic materials in both military and civilian applications with improved *** this purpose tetrazole(Azole)is identified as an attractive heterocyclic backbone with energetic functional groups nitro(-NO_(2)),nitrato(-ONO_(2)),nitrimino(-NNO_(2)),and nitramino(eNHeNO_(2))to replace the traditionally used high performing *** tetrazole based compounds having these energetic functional groups demonstrated advanced energetic performance(detonation velocity and pressure),densities,and heat of formation(HOF)and became a potential replacement of traditional energetic compounds such as *** review presents a summary of the recently reported nitro-tetrazole energetic compounds containing poly-nitro,di/mono-nitro,nitrato/nitramino/nitrimino,bridged/bis/di tetrazole and nitro functional groups,describing their preparation methods,advance energetic properties,and further applications as highperforming explosives,especially those reported in the last *** review aims to provide a fresh concept for designing nitro-tetrazole based high performing explosives together with major challenges and perspectives.

关键词： Tetrazole Energetic materials Functional groups Heterocyclic High-performing explosives

Email Filtering Using Hybrid Feature Selection Model

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Computer Modeling in Engineering & Sciences 2022年第8期132卷 435-450页

作者： Adel Hamdan Mohammad Sami Smadi tariq Alwada’n Computer Science Department The World Islamic Sciences and Education UniversityAmmanJordan Information System and Networks Department The World Islamic Sciences and Education UniversityAmmanJordan Network and Cybersecurity Department Teesside UniversityMiddlesbroughUK

Undoubtedly,spam is a serious problem,and the number of spam emails is increased ***,the massive number of spam emails prompts the need for spam detection *** methods and algorithms are used for spam ***,some emergent spam detection techniques use machine learning methods and feature *** methods and algorithms have been introduced for spam detecting and *** research proposes two models for spam detection and feature *** first model is evaluated with the email spam classification dataset,which is based on reducing the number of keywords to its *** results of this model are promising and highly *** second proposed model is based on creating features for spam detection as a first ***,the number of features is reduced using three well-known metaheuristic algorithms at the second *** algorithms used in the second model are Artificial Bee Colony(ABC),Ant Colony Optimization(ACO),and Particle Swarm Optimization(PSO),and these three algorithms are adapted to fit the proposed ***,the authors give it the names AABC,AACO,and APSO,*** dataset used for the evaluation of this model is ***,well-known criteria are used for the evaluation purposes of this model,such as true positive,false positive,false negative,precision,recall,and *** outcomes of the second proposed model are highly significant compared to the first one.

关键词： Feature selection artificial bee colony ant colony optimization particle swarm optimization spam detection emails filtering

A 78-MHz BW Continuous-Time Sigma-Delta ADC with Programmable VCO Quantizer

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Computers, Materials & Continua 2022年第9期72卷 6079-6090页

作者： Sha Li Qiao Meng Irfan tariq Xi Chen Institute of RF-&OE-ICs Southeast UniversityNanjing210096China Jiangsu Key Construction Laboratory of IoT Application Technology Wuxi Taihu UniversityWuxi214064China Polytechnic University of Madrid Madrid28031Spain

This article presents a high speed third-order continuous-time(CT)sigma-delta analog-to-digital converter(SDADC)based on voltagecontrolled oscillator(VCO),featuring a digital programmable quantizer *** improve the overall performance,not only oversampling technique but also noise-shaping enhancing technique is used to suppress in-band *** to the intrinsic first-order noise-shaping of the VCO quantizer,the proposed third-order SDADC can realize forth-order noise-shaping *** a bright advantage,the proposed programmable VCO quantizer is digital-friendly,which can simplify the design process and improve antiinterference capability of the circuit.A 4-bit programmable VCO quantizer clocked at 2.5 GHz,which is proposed in a 40 nm complementary metaloxide semiconductor(CMOS)technology,consists of an analog VCO circuit and a digital programmable quantizer,achieving 50.7 dB signal-to-noise ratio(SNR)and 26.9 dB signal-to-noise-and-distortion ration(SNDR)for a 19 MHz−3.5 dBFS input signal in 78 MHz bandwidth(BW).The digital quantizer,which is programmed in the Verilog hardware description language(HDL),consists of two-stage D-flip-flop(DFF)based registers,XOR gates and an *** presented SDADC adopts the cascade of integrators with feed-forward summation(CIFF)structure with a third-order loop filter,operating at 2.5 GHz and showing behavioral simulation performance of 92.9 dB SNR over 78 MHz bandwidth.

关键词： Sigma-delta ADC oversampling converter VCO noise-shaping programmable quantizer