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Conservation Laws for Partially Conservative Variable Mass Systems via d＇Alembert＇s Principle

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Chinese Physics Letters 2008年第9期25卷 3181-3184页

作者： AFTAB ahmed naseer ahmed QUDRAT Khan Department of Mathematics Quaid-I-Azam University 45320 Islamabad 44000 Pakistan

Conservation laws for partially conservative variable mass dynamical systems under symmetric infinitesimal transformations are determined. A generalization of Lagrange-d ＇Alembert＇s principle for a variable mass system in terms of asynchronous virtual variation is presented. The generalized Killing equations are obtained such that their solution yields the transformations and the associated conservation laws. An example illusstrative of the theory is furnished at the end as well.

关键词： the power-law exponents precipitation durative abrupt precipitation change

AN EXTENSION OF LEVI-CIVITA’S THEOREM TO NONHOLONOMIC DYNAMICAL SYSTEMS

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Acta Mechanica Sinica 1990年第2期6卷 169-179页

作者： naseer ahmed Mathematics Department Quaid-i-Azam UniversityIslamabadPakistan

This paper uses Poincaré formalism to extend the Levi-Civita theorem to cope with nonholonomic sys- tems admitting certain invariant relations whose equations of motion involve constraint *** condi- tions allowing su... 详细信息

关键词： nonholonomic dynamical systems Levi-Civita's theorem Poincaré formalism

Comparison of DSHA-based response spectrum with design response spectrum of building code of Pakistan(BCP-SP-2007)for a site in Muzaffargarh area,Pakistan

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Earthquake Science 2022年第4期35卷 280-292页

作者： naseer ahmed Shahid Ghazi Institute of Geology University of PunjabLahore 54000Pakistan Centre for Geographic Information System University of PunjabLahore 54000Pakistan

The building code of any country is considered to be a basic technical guidance document for the seismic design of ***,building codes are typically developed for the whole country,without considering site specific models that incorporate detailed site-specific ***,the adequacy of the design spectrum for building codes may sometimes be *** study the sufficiency of the building codes of Pakistan(BCP-SP-2007),a deterministic seismic hazard analysis(DSHA)based spectrum was developed for a site in the Muzaffargarh area,Pakistan,using an updated earthquake catalogue,seismic source model,and a next generation attenuation model(NGA-WEST-2).Further,an International Building Code(IBC-2000)spectrum was developed for the study area to compare the *** DSHA-based response spectrum resulted in a peak ground acceleration(PGA)value of 0.21 g for the Chaudwan *** evaluation of BCP-SP-2007 and IBC-2000 spectra provided a critical assessment for analyzing the associated margins.A comparison with the DSHA-based response spectrum showed that the BCP-SP-2007 design spectrum mostly overlapped with the DSHA spectrum unlike ***,special attention is needed for designing buildings in the study area when considering earthquake periods longer than 1 s,and the BCP-SP-2007 spectrum can be enhanced when considering a period range of 0.12-0.64 ***,BCP-SP-2007 is based on a probabilistic approach and its comparison with deterministic results showed the significance of both methods in terms of design.

关键词： deterministic seismic hazard analysis earthquakes probabilistic seismic hazard analysis building code response spectrum

Glimpse into the future of prosthodontics:The synergy of artificial intelligence

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World Journal of Clinical Cases 2023年第33期11卷 7940-7942页

作者： Artak Heboyan Nazia Yazdanie naseer ahmed Department of Prosthodontics Yerevan State Medical University after Mkhitar HeratsiYerevan 0025Armenia Department of Prosthodontics FMH College of Medicine and DentistryLahore 54000Pakistan Department of Prosthodontics Altammash Institute of Dental MedicineKarachi 75500Pakistan

Prosthodontics,deals in the restoration and replacement of missing and structurally compromised teeth,this field has been remarkably transformed in the last two *** the integration of digital imaging and threedimensional printing,prosthodontics has evolved to provide more durable,precise,and patient-centric ***,as we stand at the convergence of technology and healthcare,a new era is emerging,one that holds immense promise for the field and that is artificial intelligence(AI).In this paper,we explored the fascinating challenges and prospects associated with the future of prosthodontics in the era of AI.

关键词： Artificial intelligence Prosthodontics Treatment planning Patient-centric care Three-dimensional printing

APPLICABILITY OF HAMILTON-JACOBI METHOD TO NONLINEAR NONHOLONOMIC SYSTEMS

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Applied Mathematics and Mechanics(English Edition) 1988年第10期9卷 937-952页

作者： Q.K.Ghori,naseer ahmed Mathematics Department Quaid-i-Azam University Islamabad Pakistan Mathematics Department Quaid-i-Azam University Islamabad Pakistan

This paper uses Poincare formalism to obtain a generalization of the Hamilton-Jacobi method of integrating dynamical systems moving with nonlinear nonholonomic constraints. Necessary and sufficient conditions are investigated for the applicability of this method to such systems. The method is illustrated by considering some concrete examples of nonholonomic systems.

关键词： show In APPLICABILITY OF HAMILTON-JACOBI METHOD TO NONLINEAR NONHOLONOMIC SYSTEMS 一主丫二

INTEGRAL INVARIANTS OF A HOLONOMIC DYNAMICAL STSTEM

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Applied Mathematics and Mechanics(English Edition) 1994年第8期15卷 755-765页

作者： naseer ahmed (Mathematics Department . Quaid-i-Azam University, Islamabad, Pakistan) Mathematics Department Quaid-i-Azam University Islamabad Pakistan

This paper uses Poincare’s formalism to study . the integral invariants of aconservative holonomic dynamical system Introducing new parameters for theasynchronous variation, a generalization of the poincare and ... 详细信息

关键词： analysis mechanics. holonomic dynamical system integralinvariants synchronous asynchronous

A Novel Metadata Based Multi-Label Document Classification Technique

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Computer Systems Science & Engineering 2023年第8期46卷 2195-2214页

作者： naseer ahmed Sajid Munir Ahmad Atta-ur Rahman Gohar Zaman Mohammed Salih ahmed Nehad Ibrahim Mohammed Imran Bahmed Gomathi Krishnasamy Reem Alzaher Mariam Alkharraa Dania AlKhulaifi Maryam AlQahtani Asiya A.Salam Linah Saraireh Mohammed Gollapalli Rashad ahmed Barani Institute of Information Technology(BIIT) PMAS Arid Agriculture UniversityRawalpindi46000PunjabPakistan Department of Computer Science(CS) College of Computer Science and Information Technology(CCSIT)Imam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Faculty Computer Science and Information Technology Universiti Tun Hussein Onn MalaysiaBatu PahatMalaysia Department of Computer Engineering(CE) College of Computer Science and Information Technology(CCSIT)Imam Abdulrahman bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia College of Business Administration Imam Abdulrahman bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Department of Computer Information System(CIS) College of Computer Science and Information Technology(CCSIT)Imam Abdulrahman bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia ICS Department King Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia

From the beginning,the process of research and its publication is an ever-growing phenomenon and with the emergence of web technologies,its growth rate is *** a rough estimate,more than thirty thousand research journals have been issuing around four million papers annually on *** engines,indexing services,and digital libraries have been searching for such publications over the ***,getting the most relevant articles against the user requests is yet a *** is mainly because the articles are not appropriately indexed based on the hierarchies of granular subject *** overcome this issue,researchers are striving to investigate new techniques for the classification of the research articles especially,when the complete article text is not available(a case of nonopen access articles).The proposed study aims to investigate the multilabel classification over the available metadata in the best possible way and to assess,“to what extent metadata-based features can perform in contrast to content-based approaches.”In this regard,novel techniques for investigating multilabel classification have been proposed,developed,and evaluated on metadata such as the Title and Keywords of the *** proposed technique has been assessed for two diverse datasets,namely,from the Journal of universal computer science(***)and the benchmark dataset comprises of the articles published by the Association for computing machinery(ACM).The proposed technique yields encouraging results in contrast to the state-ofthe-art techniques in the literature.

关键词： Multilabel classification indexing metadata content/data mining

Efficient Energy Performance within Smart Grid

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Smart Grid and Renewable Energy 2017年第3期8卷 75-86页

作者： Khizer Ayaz Muhammad Sohail Sulemani naseer ahmed Department of Electrical Engineering CIIT Abbottabad Pakistan

The Smart Grid, regarded as the next generation power grid, uses two-way flows of electricity and information to create a widely distributed automated energy delivery network. Energy/power plays a critical role for social, economic and industrial development. Because of industrial generalization, especially in agricultural and economical activities, the energy demand has increased rapidly in developed countries. Generation and usage of energy has direct impact on modern power grid. In this scenario energy management is a hard task because load is dynamic and we don’t have control over it. Renewable or undepleted energy resources have great applications and impact in current electric power system situation. For example it gives pollution free (green) energy which is environment and user friendly. It is cost effective;it uses natural resources for its generation and hence do not waste any coal, gas etc. There are many inducements to empower energy productivity. As current smart grid is complex and non linear in operation and design, it used an optimized method that provides maximum efficiency with minimum input. Our work depicts a case study of hybrid electric aircraft for achieving high performance.

关键词： Smart Grid (SG) Demand Response (DR) Renewable Energy Distributed Generators (DG)

Pattern of rubber bullet injuries in the lower limbs： A report from Kashmir

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Chinese Journal of Traumatology 2016年第3期19卷 129-133页

作者： Shabir ahmed Dhar Tahir ahmed Dar Sharief ahmed Wani Saheel Maajid Jawed ahmed Bhat naseer ahmed Mir Imtiyaz Hussain Dar Shahid Hussain Department of Orthopaedics SKIMS Medical College/Haspital Bemina Srinagar 190001 Kashmir India Directorate of Health Services Srinagar 190001 Kashmir India Government Hospital for Bone and Joint Surgery Barzulla. Srinogar 190001 Kashmir India

Purpose： Rubber bullets are considered a non-lethal method of crowd control and are being used over the world. However the literature regarding the pattern and management of these injuries is scarce for the forensic pathologist as well as for the traumatologist. The objective of this report was to add our experience to the existing literature. Methods： From June 2008 to August 2010 the Government Hospital for Bone and Joint Surgery Barzulla and the Department of Orthopaedics, SKIMS Medical College/Hospital Bemina Srinagar received 28 patients for management of their orthopaedic injuries caused by rubber bullets. We documented all injuries and also recorded the management issues and complications that we encountered. Results： All patients were males with an age range of 11-32 years and were civilians who had been hit by rubber bullets fired by the police and the paramilitary forces. Among them, 19 patients had injuries of the lower limbs and 9 patients had injuries of the upper limbs. All patients were received within 6 h of being shot. Conclusion： Our findings suggest that these weapons are capable of causing significant injuries including fractures and it is important for the surgeon to be well versed with the management of such injuries especially in areas of unrest, The report is also supportive of the opinion that these weapons are lethal and should hence be reclassified_

关键词： Rubber bulletNon-lethalCrowd control