Search Results - "Umair Zulfiqar"

Adaptive frequency‐limited H2‐model order reduction by Zulfiqar, Umair, Sreeram, Victor, Du, Xin

“…In this paper, we present an adaptive framework for constructing a pseudo‐optimal reduced model for the frequency‐limited H2‐optimal model order reduction…”
Get full text

Time- and frequency-limited H2-optimal model order reduction of bilinear control systems by Umair Zulfiqar, Sreeram, Victor, Mian Ilyas Ahmad, Du, Xin

“…In the time- and frequency-limited model order reduction, a reduced-order approximation of the original high-order model is sought to ensure superior accuracy…”
Get full text

A New Frequency-Limited Interval Gramians-Based Model Order Reduction Technique by Zulfiqar, Umair, Imran, Muhammad, Ghafoor, Abdul, Liaquat, Muwahida

“…Model order reduction (MOR) is a process of finding a lower approximation of the original system. In many practical applications, only a certain frequency…”
Get full text

A Passivity-Preserving Frequency-Weighted Model Order Reduction Technique by Zulfiqar, Umair, Tariq, Waseem, Li, Li, Liaquat, Muwahida

“…Frequency-weighted model order reduction techniques aim to yield a reduced order model whose output matches that of the original system in the emphasized…”
Get full text

Minimal realization and approximation of commensurate linear fractional-order systems via Loewner matrix method by Meng, Lihong, Yang, Xu, Zulfiqar, Umair, Du, Xin

“…In this paper we propose a data driven realization and model order reduction (MOR) for linear fractional-order system (FoS) by applying the Loewner-matrix…”
Get full text

COMPARISON OF ANALGESIC EFFECT OF INTRAVENOUS PARACETAMOL VS INTRAVENOUS KETOROLAC ON POST-OPERATIVE PAIN AFTER ABDOMINAL SURGERY by Muhammad Ans, Rasikh Maqsood, Ayub Ashraf Malhi, Mahmood, Khalid, Feroze, Neda, Umair Zulfiqar

“…ABSTRACT Objective: To compare the analgesic effect of intravenous paracetamol and intravenous ketorolac on post-operative pain after abdominal surgery. Study…”
Get full text

WOUND COMPLICATIONS DUE TO DIABETES IN PATIENTS UNDERGOING ABDOMINAL SURGERY by Rasikh Maqsood, Muhammad Ans, Ayub Ashraf Malhi, Mahmood, Khalid, Hasnain Afzal, Umair Zulfiqar

“…ABSTRACT Objective: To determine the wound complications of abdominal surgery in the patients of diabetes mellitus and associated factors at Combined Military…”
Get full text

Reduced Order Controller Design for Symmetric, Non-Symmetric and Unstable Systems Using Extended Cross-Gramian by Azhar, Zulfiqar, Liaquat, Kumar

“…In model order reduction and system theory, the cross-gramian is widely applicable. The cross-gramian based model order reduction techniques have the advantage…”
Get full text

EFFECTS OF IRON DEFICIENCY ANEMIA IN SURGICAL SITE INFECTION by Zulfiqar, Muhammad Umair, Ghani, Umer Fayyaz, Mallhi, Ayub Ashraf, Mahmood, Khalid, Iqbal, Maria, Ans, Muhammad

“…Objective: To determine effect of iron deficiency anemia on the patients developing surgical site infection at surgical department of a tertiary care setup in…”
Get full text

BACTERIOLOGICAL PROFILE OF DIABETIC FOOT INFECTIONS AND ITS EFFECTS ON LIMB SALVATION by Zulfiqar, Muhammad Umair, Ghani, Umer Fayyaz, Mallhi, Ayub Ashraf, Mahmood, Khalid, Iqbal, Maria, Ans, Muhammad

“…Objective: To assess the bacteriological profile of infected diabetic foot and its relationship with limb salvation among the patients treated for diabetic…”
Get full text

Finite-frequency model order reduction of linear and bilinear systems via low-rank approximation by Song, Qiu-Yan, Zulfiqar, Umair, Du, Xin

“…In this paper, we first investigate the finite-frequency model order reduction for linear systems based on low-rank Gramian approximations. An efficient…”
Get full text

Frequency-Limited Pseudo-Optimal Rational Krylov Algorithm for Power System Reduction by Zulfiqar, Umair, Sreeram, Victor, Du, Xin

“…International Journal of Electrical Power & Energy Systems, 118, p.105798 (2020) In this paper, a computationally efficient frequency-limited model reduction…”
Get full text

On frequency- and time-limited μ H 2 -optimal model order reduction by Zulfiqar, Umair, Du, Xin, Song, Qiu-Yan, Sreeram, Victor

Get full text

Time- and frequency-limited H2-optimal model order reduction of bilinear control systems by Zulfiqar, Umair, Sreeram, Victor, Ahmad, Mian Ilyas, Du, Xin

“…In the time- and frequency-limited model order reduction, a reduced-order approximation of the original high-order model is sought to ensure superior accuracy…”
Get full text

Frequency-limited pseudo-optimal rational Krylov algorithm for power system reduction by Zulfiqar, Umair, Sreeram, Victor, Du, Xin

“…•A computationally-efficient power system reduction algorithm is presented.•The algorithm preserves the electromechanical modes of the original system.•It…”
Get full text

Adaptive frequency‐limited ‐model order reduction by Zulfiqar, Umair, Sreeram, Victor, Du, Xin

“…Abstract In this paper, we present an adaptive framework for constructing a pseudo‐optimal reduced model for the frequency‐limited ‐optimal model order…”
Get full text

Finite-frequency power system reduction by Zulfiqar, Umair, Sreeram, Victor, Du, Xin

“…•Matching moments at low-frequency improves the accuracy of the reduced model.•The preservation of electromechanical poles also improves…”
Get full text

On frequency- and time-limited μH2-optimal model order reduction by Zulfiqar, Umair, Du, Xin, Song, Qiu-Yan, Sreeram, Victor

“…In this paper, the problems of frequency-limited and time-limited H2-optimal model order reduction of linear time-invariant systems are considered within the…”
Get full text

H2 model order reduction: A relative error setting by Zulfiqar, Umair, Du, Xin, Song, Qiu-Yan, Liaquat, Muwahida, Sreeram, Victor

“…In dynamical system theory, the process of obtaining a reduced-order approximation of the high-order model is called model order reduction. The closeness of…”
Get full text

H 2 model order reduction: A relative error setting by Zulfiqar, Umair, Du, Xin, Song, Qiu-Yan, Liaquat, Muwahida, Sreeram, Victor

Get full text