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Search Results: 1 - 10 of 7696 matches for " Junaid Khan "
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Subalgebra Analogue to Standard Basis for Ideal
Junaid Alam Khan
Mathematics , 2009,
Abstract: The theory of "subalgebra basis" analogous to standard basis (the generalization of Gr\"{o}bner bases to monomial ordering which are not necessarily well ordering \cite{GP1}.) for ideals in polynomial rings over a field is developed. We call these bases "SASBI Basis" for "Subalgebra Analogue to Standard Basis for Ideals". The case of global orderings, here they are called "SAGBI Basis" for "Subalgebra Analogue to Gr\"{o}bner Basis for Ideals", is treated in \cite{RS1}. Sasbi bases may be infinite. In this paper we consider subalgebras admitting a finite Sasbi basis and give algorithms to compute them. The algorithms have been implemented as a library for the computer algebra system SINGULAR \cite{GPS1}.
Converting Subalgebra Bases with the Sagbi Walk
Junaid Alam Khan
Mathematics , 2009,
Abstract: We present an algorithm which converts a given Sagbi basis of a polynomial $K$-subalgebra $\mathcal{A}$ to a Sagbi basis of $\mathcal{A}$ in a polynomial ring with respect to another term ordering, under the assumption that subalgebra $\mathcal{A}$ admits a finite Sagbi basis with respect to all term ordering. The Sagbi walk method converts a Sagbi basis by partitioning the computations following a path in the Sagbi Fan. The algorithms have been implemented as a library for the computer algebra system SINGULAR \cite{GPS1}.
Study on the Effect of Neem (Azadirachta indica) Leaves Smoke in Controlling Airborne Bacteria in Residential Premises
Saeed A. Khan,Junaid Aslam
Current Research in Bacteriology , 2008,
Abstract: The effect of smoke produced by burning of neem leaves (Azadirachta indica) was studied for controlling airborne bacteria in four rooms of house premise viz., kitchen, dinning hall and two meeting halls in Dubai. Petri plates containing with bacterial agar medium were sterilized in an autoclave and placed at Cassella airborne bacterial silt for monitoring. Bacterial colonies developed in those petri plates which were exposed to ambient environment, whereas no bacteria colony were seen in petri plates exposed to neem leaves smoke treated environments. Maximum bacterial colonies were developed in kitchen followed by dinning hall and the meeting rooms (majlis) in the ambient environment. Neem leaves smoke treatment resulted in controlling bacterial growth on bacterial agar medium petri plates. Studied revealed that neem leaves smoke has antibactericidal properties and could be used for controlling airborne bacterial contamination in the residential premise.
Almost Decouplability of any Directed Weighted Network Topology
Ning Cai,M. Junaid Khan
Computer Science , 2014,
Abstract: This paper introduces a conception that any weighted directed network topology is almost decouplable, which can help to transform the topology into a similar form being composed of uncoupled vertices, and thus reduce the complexity of analysis for networked dynamical systems. As an example of its application, the consensus problem of linear multi-agent systems with time-varying network topologies is addressed. As a result, a necessary and sufficient condition for uniform consensus is proposed.
On Swarm Stability of Linear Time-Invariant Descriptor Compartmental Networks
Ning Cai,M. Junaid Khan
Computer Science , 2014, DOI: 10.1049/iet-cta.2014.0130
Abstract: Swarm stability is concerned for descriptor compartmental networks with linear time-invariant protocol. Compartmental network is a specific type of dynamical multi-agent system. Necessary and sufficient conditions for both consensus and critical swarm stability are presented, which require a joint matching between the interactive dynamics of nearest neighboring vertices and the Laplacian spectrum of the overall network topology. Three numerical instances are illustrated to verify the theoretical results.
Supply Response Analysis of Rice Growers in District Gujranwala, Pakistan  [PDF]
Sunair Junaid, Arif Ullah, Shaofeng Zheng, Syed Noor Muhammad Shah, Shahid Ali, Munir Khan
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.511116
Abstract: The study was designed to estimate the restricted profit function in district Gujranwala, Punjab, Pakistan. Data were collected from 100 respondents using proportional allocation sampling tech-nique. The analysis was done using SHAZAM software. The results indicate that the farmers are price-responsive. Rice own price elasticity was 1.873. The output supply elasticity of rice with re-spect to education, land, fertilizer price and irrigation cost were 0.0.169, 1.274, -0.873 and -0.953 respectively. Irrigation demand elasticity with respect to education, land, fertilizer price, irrigation cost and output price were 0.14, 1.14, -0.783, -1.84 and 1.78 respectively. Fertilizer demand elasticity with respect to education, land, fertilizer price, irrigation cost and output price was 0.023, 0.792, -1.65, -0.85 and 1.851 respectively. Lastly, the elasticity of profit with respect to education, land, fertilizer price, irrigation cost and output price was 0.20, 1.10, -0.83, -1.136 and 1.92 respectively. The study recommends that Government should provide consistent electricity with stable rates, so that, they irrigate their fields through electric tube wells and ultimately their cost of irrigation decreases. The study also suggests that government should stabilized fertilizer prices to encourage its application. Furthermore, government should raise procurement price of rice to encourage its supply this; it in turn will also increase the profit of the farmer.
Optimal Design of PID Controller for the Speed Control of DC Motor by Using Metaheuristic Techniques
Mirza Muhammad Sabir,Junaid Ali Khan
Advances in Artificial Neural Systems , 2014, DOI: 10.1155/2014/126317
Abstract: DC motors are used in numerous industrial applications like servo systems and speed control applications. For such systems, the Proportional+Integral+Derivative (PID) controller is usually the controller of choice due to its ease of implementation, ruggedness, and easy tuning. All the classical methods for PID controller design and tuning provide initial workable values for , , and which are further manually fine-tuned for achieving desired performance. The manual fine tuning of the PID controller parameters is an arduous job which demands expertise and comprehensive knowledge of the domain. In this research work, some metaheuristic algorithms are explored for designing PID controller and a comprehensive comparison is made between these algorithms and classical techniques as well for the purpose of selecting the best technique for PID controller design and parameters tuning. 1. Introduction In this modern industrial age, there is hardly any industrial application in which DC motors are not being used [1, 2]. This is so because of ease of control, low cost maintenance especially of brushless DC motor type, low price, and ruggedness of DC motor over a wide range of applications. Some industrial applications, which are worth mentioning, in which DC motors are being used widely are machine tools, paper mills, textile industry, electric traction, and robotics. The flexibility in controller design of DC motors is due to the fact that armature winding and field winding could be controlled separately [3]. In most of the applications of speed control of DC motors, the current in field winding is kept constant and the current in armature winding is varied or vice versa which gives excellent speed control performance over a wide range of desired values. In these applications, the purpose is to track the speed command by keeping output speed at desired level and to achieve desire speed or position control in minimum time without having large overshoots and settling times [4, 5]. There are different types of controllers like lead, lag, LQR (linear quadratic regulator), PID, and sliding-mode control that could be incorporated in control applications [6–8]. Among the few mentioned types of controllers, PID controller is one of the earliest and best understood controllers which is incorporated in almost every industrial control application due to its efficiency and ease of implementation [9]. Although there are many classical techniques for designing and tuning PID controller parameters which are widely understood and easily applied, one of the main disadvantages of
A Novel Clustering Approach Based on Group Quasi-Consensus of Unstable Dynamic Linear High-Order Multi-Agent Systems
Ning Cai,Chen Diao,M. Junaid Khan
Computer Science , 2015,
Abstract: This paper introduces a novel approach of clustering, which is based on group consensus of dynamic linear high-order multi-agent systems. The graph topology is associated with a selected multi-agent system, with each agent corresponding to one vertex. In order to reveal the cluster structure, the agents belonging to a similar cluster are expected to aggregate together. As theoretical foundation, a necessary and sufficient condition is given to check the group consensus. Two numerical instances are shown to illustrate the process of approach.
Differences in Reporting of Violence and Deliberate Self Harm Related Injuries to Health and Police Authorities, Rawalpindi, Pakistan
Umar Farooq,Mudassir Majeed,Junaid Ahmad Bhatti,Jahangir Sarwar Khan,Junaid Abdul Razzak,Muhammad Mussadiq Khan
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0009373
Abstract: The aim of study was to assess differences in reporting of violence and deliberate self harm (DSH) related injuries to police and emergency department (ED) in an urban town of Pakistan.
Performance of Different Cultivars in Direct Seeded Rice (Oryza sativa L.) with Various Seeding Densities  [PDF]
Asif Ameen, Zubair Aslam, Qamar Uz Zaman, Ehsanullah  , Shahid Ibne Zamir, Imran Khan, Muhammad Junaid Subhani
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.521328
Abstract:

Optimum seeding density is necessary to achieve the production potential of a cultivar in all crops. To investigate the performance of different cultivars in direct seeded rice in response to various seeding densities, a field experiment was conducted at Agronomic Research Area, University of Agriculture, Faisalabad during the kharif 2012. Super basmati (fine rice) and KSK-133 (coarse rice) were sown using seeding densities of 30, 45, 60 and 75 kg·ha-1. Results indicated that leaf area index and crop growth rate varied among rice cultivars as well as various seeding densities. The growth of rice at seeding density of 75 kg·ha-1 was higher than rest of treatments. The response of rice yield and its components like number of productive tillers, number of kernels per panicle and 1000-kernal weight differed significantly under the influence of cultivars and various seeding densities. Seeding density of 75 kg·ha-1 remained superior for both rice cultivars regarding final yield. This treatment furnished kernel yields of 3.83 and 5.49 t

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