检索结果-南通市图书馆

Acta Metallurgica Sinica(English Letters) 2013年第6期26卷 699-706页

作者： muhammad Arslan riaz muhammad Arshad Mahmood Rashad Rasheed Department of Applied Physics Federal Urdu University of ArtsSciences and Technology National Institute of Lasers and Optronics

Thin films of Zn1-xCuxSe （x= 0.00, 0.05, 0.10, 0.15, 0.20） were grown on glass substrates by closed space sublimation technique. The deposited films were annealed at 200 ~C and 400 ~C in air for 1 h. The annealed samples have been investigated through Rutherford backscattering spectroscopy （RBS）, X-ray diffraction （XRD）, spectroscopic ellipsometer, spectrophotometer and Raman spectroscopy. Through RBS, the composition of the films was calculated and compared with the initial concentration. Structural characteriza- tion including crystal structure, crystal orientation, lattice parameter, grain size, strain and dislocation density were carried out using XRD data. From XRD spectra it was revealed that the as-deposited and annealed films were polycrystalline in nature with zinc-blende structure. However, the crystallinity and the grain size were improved with the increase of annealing temperature. According to Raman spectroscopy, it was observed that as deposited and annealed samples have the same characteristic vibrational modes of ZnSe at low and high frequency optical phonon modes while another mode was observed for 400 ℃ annealed samples at 745 cm-1. Spectroscopic ellipsometer has been used to found annealing effect on the optical properties of ZnSe. The band gap energy has been determined using transmission spectra. It was found that the band gap energy of the film increased with the increase of annealing temperature.

关键词： Closed space sublimation Annealing effect Structural Transmission Band gap Spectroscopic ellipsometer Raman spectroscopy

Principal Component Analysis and Minimum Description Length Criterion Based on Through-Wall Image Enhancement

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2013年第4期30卷 45-47页

作者： muhammad Mohsin riaz Abdul Ghafoor Department of Electrical Engineering College of SignalsNational University of Sciences and Technology(NUST)IslamabadPakistan

A through-wall image enhancement scheme is proposed based on principal component analysis and minimum description length *** minimum description length criterion is used with principal component analysis to extract target eigen *** proposed scheme is capable of extracting multiple targets from heavy cluttered through-wall *** results of the proposed scheme are compared with existing schemes on the basis of quantitative analysis and visual inspection.

关键词： criterion. Image scheme

Static and adaptive feedback control for synchronization of different chaotic oscillators with mutually Lipschitz nonlinearities

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第11期23卷 223-231页

作者： muhammad riaz muhammad Rehan Keum-Shik Hong muhammad Ashraf Haroon Ur Rasheed Department of Electrical Engineering Pakistan Institute of Engineering and Applied Sciences (PIEAS) Islamabad Pakistan Department of Electronics Engineering Mohammad Ali Jinnah University Department of Cogno-Mechatronics Engineering and School of Mechanical Engineering Pusan National University 2 Busandaehak-ro Geumjeong-gu Busan 609-735 Republic of Korea Department of Electronics Engineering Mohammad Ali Jinnah University Islamabad Pakistan

This paper addresses the control law design for synchronization of two different chaotic oscillators with mutually Lipschitz nonlinearities. For analysis of the properties of two different nonlinearities, an advanced mutually Lipschitz condition is proposed. This mutually Lipschitz condition is more general than the traditional Lipschitz condition. Unlike the latter, it can be used for the design of a feedback controller for synchronization of chaotic oscillators of different dynamics. It is shown that any two different Lipschitz nonlinearities always satisfy the mutually Lipschitz condition. Applying the mutually Lipschitz condition, a quadratic Lyapunov function and uniformly ultimately bounded stability, easily designable and implementable robust control strategies utilizing algebraic Riccati equation and linear matrix inequalities, are derived for synchronization of two distinct chaotic oscillators. Furthermore, a novel adaptive control scheme for mutually Lipschitz chaotic systems is established by addressing the issue of adaptive cancellation of unknown mismatch between the dynamics of different chaotic systems. The proposed control technique is numerically tested for synchronization of two different chaotic Chua＇s circuits and for obtaining identical behavior between the modified Chua＇s circuit and the R6ssler system.

关键词： control theory and feedback synchronization mutually Lipschitz nonlinearity adaptive controlsystem

Pythagorean fuzzy prioritized aggregation operators with priority degrees for multi-criteria decision-making

在线全文

学校读者我要写书评

暂无评论

International Journal of Intelligent Computing and Cybernetics 2022年第4期15卷 510-539页

作者： Hafiz muhammad Athar Farid muhammad riaz Department of Mathematics University of the PunjabLahorePakistan

Purpose-The authors develop some prioritized operators named Pythagorean fuzzy prioritized averaging operator with priority degrees and Pythagorean fuzzy prioritized geometric operator with priority *** properties of the existing method are routinely compared to those of other current approaches,emphasizing the superiority of the presented work over currently used ***,the impact of priority degrees on the aggregate outcome is thoroughly ***,based on these operators,a decision-making approach is presented under the Pythagorean fuzzy set *** illustrative example related to the selection of the best alternative is considered to demonstrate the efficiency of the proposed ***/methodology/approach-In real-world situations,Pythagorean fuzzy numbers are exceptionally useful for representing ambiguous *** authors look at multi-criteria decision-making issues in which the parameters have a prioritization *** idea of a priority degree is *** aggregation operators are formed by awarding non-negative real numbers known as priority degrees among strict priority ***,the authors develop some prioritized operators named Pythagorean fuzzy prioritized averaging operator with priority degrees and Pythagorean fuzzy prioritized geometric operator with priority ***-The authors develop some prioritized operators named Pythagorean fuzzy prioritized averaging operator with priority degrees and Pythagorean fuzzy prioritized geometric operator with priority *** properties of the existing method are routinely compared to those of other current approaches,emphasizing the superiority of the presented work over currently used ***,the impact of priority degrees on the aggregate outcome is thoroughly ***,based on these operators,a decision-making approach is presented under the Pythagorean fuzzy set *** illustrative example related to t

关键词： Prioritized aggregation operators Priority degrees Pythagorean fuzzy numbers and MCDM

Hierarchical medical diagnosis approach for COVID-19 based on picture fuzzy fairly aggregation operators

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2023年第2期16卷 115-151页

作者： muhammad riaz Hafiz muhammad Athar Faridt Department of Mathematics University of the Punjab LahorePakistan

In Pakistan, a hierarchical healthcare system is an efficient way of addressing the issueof limited and insufficient healthcare services. Identifying the various degrees of diseasebased on the doctor's diagnosis is an important step in developing the hierarchical healthcaretreatment structure. This research presents a framework for dealing with the issueof diagnosis values presented as "picture fuzzy numbers (PFNs)". Specifically, the goal ofthis study is to establish some innovative operational laws and "aggregation operators"(AOs) in a picture fuzzy environment. In this regard, we proposed some new neutral orfair operational laws that incorporate the concept of proportional distribution in orderto achieve a neutral or fair remedy to the positive, neutral and negative aspects ofPFNs. Based on the developed operational laws, we proposed the "picture fuzzy fairlyweighted average operator" and the "picture fuzzy fairly ordered weighted averagingoperator". Compared to previous techniques, the proposed AOs provide more generalizedand reliable. Furthermore, using proposed AOs with multiple decision-makers andpartial weight information under PFNs, a "multi-criteria decision-making" algorithmis developed. Finally, we provide an example to show how the novel approach can aidhierarchical treatment systems. This is essential for merging the healthcare capabilitiesof the general public and optimizing the medical care system's service performance.

关键词： Fairly operations picture fuzzy numbers hierarchical healthcare treatment COVID-19 optimization model aggregation operators

Redefined Extended Cubic B-Spline Functions for Numerical Solution of Time-Fractional Telegraph Equation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2021年第4期127卷 361-384页

作者： muhammad Amin muhammad Abbas Dumitru Baleanu muhammad Kashif Iqbal muhammad Bilal riaz Department of Mathematics National College of Business Administration&EconomicsLahore54660Pakistan Department of Mathematics University of SargodhaSargodha40100Pakistan Department of Mathematics Faculty of Arts and SciencesCankaya UniversityAnkara06530Turkey Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung40402Taiwan Institute of Space-Sciences Bucharest077125Romania Department of Mathematics Government College UniversityFaisalabad38000Pakistan Department of Mathematics University of Management and TechnologyLahore54700Pakistan

This work is concerned with the application of a redefined set of extended uniform cubic B-spline(RECBS)functions for the numerical treatment of time-fractional Telegraph *** presented technique engages finite difference formulation for discretizing the Caputo time-fractional derivatives and RECBS functions to interpolate the solution curve along the spatial *** analysis of the scheme is provided to ensure that the errors do not amplify during the execution of the numerical *** derivation of uniform convergence has also been *** computational experiments are executed to verify the theoretical *** results are compared with the existing schemes and it is concluded that the present scheme returns superior outcomes on the topic.

关键词： Extended cubic B-spline redefined extended cubic B-spline time fractional telegraph equation caputo fractional derivative finite difference method convergence

Bipolar fuzzy soft mappings with application to bipolar disorders

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2019年第7期12卷 147-177页

作者： muhammad riaz Syeda Tayyba Tehrim Department of Mathematics University of the Punjab LahorePakistan

Bipolar disorder is a neurological disorder that consists of two main factors,*** and *** are two main drawbacks in clinical diagnosis of the bipolar ***,bipolar disorder is mostly wrongly diagnosed as unipolar depression in clinical *** is,because in clinical diagnosis,the first factor is often neglected due to its approach toward ***,the element of bipolarity vanishes and the disease becomes ***,the types of bipolhr disorder are mostly misdiagnosed due to similar *** overcome these problems,the bipolar fuzzy soft set(BFS-set)and bipolar fuzzy soft mappings(BFS-mappings)are useful to tackle bipolarity and to construct a strong mathematical modeling process to diagnose this disease *** technique is extensive but simple as compared to existing medical diagnosis methods.A chart(relation between different types and symptoms of bipolar disorder)is provided which contains different ranges over the interval[-1,1].A process of BFS-mappings is also provided to obtain correct diagnosis and to suggest the best ***,a generalized BFS-mapping is introduced which is helpful to keep patient's improvement *** case study indicates the reliability,efficiency and capability of the achieved theoretical ***,it reveals that the connection of soft set with bipolar fuzzy set is fruitful to construct a connection between symptoms which minimize the complexity of the case study.

关键词： BFS-set BFS-mappings operations and properties of BFS-mappings Bipolarity Bipolar I disorder Bipolar II disorder Cyclothymia

Diagnosis of lumbar degenerative disc disease by using L^(p)-spaces related to generalized interval-valued m-polar neutrosophic choquet integral Operator

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2021年第8期14卷 85-127页

作者： Masooma Raza Hashmi muhammad riaz Department of Mathematics University of the PunjabLahorePakistan

Innovative and astonishing developments in the field of spine analysis can commence with this *** lumbar disks(L1−L2 to L5−S1)are most commonly impaired by degeneration due to their long-standing degeneration and associated *** investigate the indications,purposes,risk factors,and therapies of lumbar degenerated disc disease(L-DDD).We assume that the degeneration of five discs creates many effects,making it difficult to differentiate between the different types of degenerated discs and their *** the indeterminacy and falsity portions of science or clinical diagnosis are often *** to this complexity,the reliability of the patient’s progress report cannot be calculated,nor can the period of therapy be *** revolutionary concept of interval-valued m-polar neutrosophic Choquet integral aggregation operator(IVmPNCIAO)is proposed to eliminate these *** associate generalized interval-valued m-polar neutrosophic Choquet integral aggregation operator(GIVmPNCIAO)with the statistical formulation of L^(p)-spaces and use it to identify the actual kind of degenerative disc in the lumbar *** the classification of interval-valued m-polar neutrosophic numbers(IVMPNNs),we set the ranking index and score *** concepts are appropriate and necessary in order to better diagnose degeneration by associating it with mathematical *** construct a pre-diagnosis map based on the fuzzy interval[0,1]to classify the types of degenerative *** develop an algorithm by using GIVmPNCIAO based on interval-valued m-polar neutrosophic sets(IVMPNNs)to identify the degenerative disc appropriately and to choose the most exquisite treatment for the corresponding degeneration of every ***,we discuss the sensitivity analysis with parameter p in GIVmPNCIAO to investigate the patient’s improvement record.

关键词： Interval-valued m-polar neutrosophic sets(IVMPNSs) interval-valued m-polar neutrosophic Choquet integral aggregation operator(IVmPNCIAO) lumbar degenerative disc disease(L-DDD) decision-making

Stability analysis of different cotton genotypes under normal and water-deficit conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2019年第6期18卷 1257-1265页

作者： muhammad riaz Jehanzeb Farooq Saghir Ahmed muhammad Amin Waqas Shafqat Chattha Maria Ayoub riaz Ahmed Kainth Cotton Research Station Faisalabad 38850Pakistan Cotton Research Institute Multan 66000Pakistan Nuclear Institute for Food and Agriculture (NIFA) Tarnab Peshawar 446Pakistan

Cotton plant observes significant reduction in seed cotton yield when subjected to water *** find out genotypes having better drought tolerance,seven genotypes of Gossypium hirsutum *** tested under two moisture levels,i.e.,normal and water deficit stress conditions at five locations of Punjab,Pakistan(Faisalabad,Sahiwal,Vehari,Rahim Yar Khan,and Bahawalpur)in 2013 and ***×environment interaction(GEI)was studied using the genotype main effects and genotype by environment interaction(GGE)biplot and additive main effect and multiplicative interaction *** genotypes G3(7001/11)and G6(FH-942)were stable under normal condition,while under drought condition,the stable genotype was G5(FH-326)when analysed using additive main effects and multiplicative interaction(AMMI)biplot *** GGE biplot analysis on the basis of best performance revealed that under normal condition the genotypes,G1(L-13/10)and G2(FH-2056/10),carrying the common position in ***,under water deficit stress condition,G5 was the best adaptive genotype at all five *** the same way,ranking of genotypes showed that the G5 was the ideal genotype under both ***,it is concluded that the genotype G5(FH-326)was found best for water deficit stress condition and can be cultivated under water scarce areas of Punjab.

关键词： upland cotton yield stability adaptability water stress Pakistan irrigation

Evolution of Coulomb failure stress in Sulaiman Lobe,Pakistan,and its implications for seismic hazard assessment

在线全文

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2023年第2期7卷 282-294页

作者： Aiza Amjad muhammad Shahid riaz Urooj Shakir muhammad Younis Khan muhammad Ali Shah Bahria School of Engineering and Applied Sciences H-11 CampusBahriaBahria UniversityIslamabadPakistan Centre for Earthquake Studies National Centre for PhysicsIslamabadPakistan National Centre of Excellence in Geology University of PeshawarPeshawarPakistan GIS and Space Applications in Geosciences(G-SAG)Lab National Center of GIS and Space Applications(NCGSA)IslamabadPakistan

In this research work,we present the evolution of Coulomb failure stress(CFS)in the Sulaiman Lobe and its implications for seismic hazard *** Chaman transform fault,~1,000 km long,is the major active fault that marks the western boundary between Pakistan and Afghanistan on the Indian *** date,few studies have been conducted to unveil the interactions among earthquakes and the implications of these interactions for seismic hazard assessment in the *** thoroughly investigated the published and online catalog to construct a sequence of major earthquakes that occurred in this region during the *** final earthquake sequence was composed of 15 earthquakes of M_(w)≥6.0,beginning with the 1888 *** used the stress-triggering theory to numerically simulate the evolution of CFS caused by these *** numerical results revealed that 8 out of 15earthquakes were triggered by the preceding *** earthquakes in 1908,1910,1935,1966,and 1997 were rather independent earthquakes in this *** the epicenters of the 1975a and 1975b earthquakes were in the stress shadow zone,the partial rupture segments of both these earthquakes were in high-CFS *** CFS induced by the 1935 earthquake was notable,as it later triggered the 2008 ***,our results revealed that the northern segment of the Chaman Fault,the southern segment of the Ghazaband Fault,and the northwestern segment of the Urghargai Fault demonstrated a high change in CFS that could trigger seismicity in these *** necessary arrangements must therefore be made to mitigate any possible seismic hazards in the region.

关键词： Sulaiman Thrust Sulaiman Lobe earthquake triggering Coulomb failure stress seismic hazard assessment