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Intelligent Islanding Detection of Multi-distributed Generation Using Artificial Neural Network Based on Intrinsic Mode Function Feature

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 511-520页

作者： Samuel Admasie Syed Basit Ali Bukhari Teke Gush raza haider Chul Hwan Kim Department of Electrical and Computer Engineering Sungkyunkwan UniversitySuwonSouth Korea U.S.-Pakistan Center for Advanced Studies in Energy(USPCAS-E) National University of Sciences and Technology(NUST)H-12 IslamabadPakistan Department of Electrical Engineering Balochistan University of Engineering and TechnologyKhuzdar 89100Pakistan

The integration of distributed energy resources(DERs) into distribution networks is becoming increasingly important, as it supports the continued adoption of renewable power generation, combined heat and power plants, and storage systems. Nevertheless, inadvertent islanding operation is one of the major protection issues in distribution networks connected to DERs. This study proposes an intelligent islanding detection method(IIDM) using an intrinsic mode function(IMF)feature-based grey wolf optimized artificial neural network(GWO-ANN). In the proposed IIDM, the modal voltage signal is pre-processed by variational mode decomposition followed by Hilbert transform on each IMF to derive highly involved features. Then, the energy and standard deviation of IMFs are employed to train/test the GWO-ANN model for identifying the islanding operations from other non-islanding events. To evaluate the performance of the proposed IIDM, various islanding and non-islanding conditions such as faults, voltage sag, linear and nonlinear load and switching, are considered as the training and testing datasets. Moreover, the proposed IIDM is evaluated under noise conditions for the measured voltage signal. The simulation results demonstrate that the proposed IIDM is capable of differentiating between islanding and non-islanding events without any sensitivity under noise conditions in the test signal.

关键词： Distributed energy resource(DER) intrinsic mode function(IMF) grey wolf optimized artificial neural network(GWO-ANN) intelligent islanding detection method(IIDM) microgrid

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Power Factor Improvement of AC-DC Converter Based on Separately Excited DC Motor Using Passive Filter

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Open Journal of Energy Efficiency 2016年第3期5卷 71-77页

作者： Shazia Baloch Mukhtiar Ahmed Mahar raza haider Shakeel Ahmed Electrical Engineering Department Balochistan University of Engineering and Technology Khuzdar Pakistan Electrical Engineering Department Mehran University of Engineering and Technology Jamshoror Pakistan Civil Engineering Department Balochistan University of Engineering and Technology Khuzdar Pakistan

In industries DC motor drives are very essential due to their high performance applications such as its reliability, ease of control, low cost and simplicity. And speed control of these motors is very easy due to power electronic AC-DC converters. These power electronic converters are with prominent low power factor and higher Total Harmonic Distortion (THD). These converters operate only for short time resulting non-sinusoidal waveform. This problem of harmonic distortion can be mitigated by reshaping the non-sinusoidal waveform to pure sine wave. Different wave shaping techniques have been developed by using different filters among which one is tuned passive filter. This paper proposed power factor improvement and harmonic mitigation of AC-DC converters based on separately excited DC motor using tuned passive filter. In this context experimental model is designed and results are analyzed by power quality analyzer.

关键词： DC Motors AC-DC Converters Power Factor Total Harmonic Distortion Passive Filters

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植酸酶的多种益处

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国外畜牧学（猪与禽） 2010年第3期30卷 18-19页

作者：苏良科 Syed Ali raza haider Prix药业(私营)有限公司

从提升饲料价值至改善环境(图1),植酸酶的价值是无容置疑的。

关键词：植酸酶饲料价值矿物质家禽饲料

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The correlation of spot urinary protein-to-creatinine ratio with 24-h urinary protein excretion in various glomerulopathies

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World Journal of Nephrology 2023年第5期12卷 159-167页

作者： Amber raza Syed haider Nawaz Rahma Rashid Ejaz Ahmed Muhammed Mubarak Department of Nephrology Sindh Institute of Urology and TransplantationSindhKarachi 74200Pakistan Department of Pathology Sindh Institute of Urology and TransplantationSindhKarachi 74200Pakistan

BACKGROUND Proteinuria is an important and well-known biomarker of many forms of kidney *** quantitation is of particular importance in the diagnosis and management of glomerular *** quantification can be done by several *** these,the measurement of 24-h urinary protein excretion is the gold standard ***,it is cumbersome,time-consuming,and inconvenient for patients and is not completely *** alternative methods have been tested over time albeit with conflicting *** the latter,the measurement of urine protein-to-creatinine ratio(uPCR)in singlevoided urinary samples is widely *** majority of studies found a good correlation between uPCR in single urine samples with 24-h urinary protein estimation,whereas others did *** To investigate the correlation of spot uPCR with 24-h urinary protein estimation in patients suffering from different forms of glomerulopathies at a single largevolume nephrological center in *** This cross-sectional,observational study was conducted at the Department of Nephrology,Sindh Institute of Urology and Transplantation,Karachi,Pakistan from September 2017 to March *** newly presenting adult patients with proteinuria who were being investigated for suspected glomerulonephritis and persistent proteinuria with ages between 18 to 60 years were *** patients were given detailed advice regarding 24-h urine collection starting at 7:00 AM for total protein and creatinine excretion estimations.A spot urine sample was collected the next day at the time of submission of a 24-h urine sample for measuring uPCR along with a blood *** data of patients were collected in a *** version 20.0 was used for statistical *** A total of 157 patients were *** mean age was 30.45±12.11 *** were 94(59.8%)males and 63(40.2%)*** mean 24-h urinary protein excretion was 3192.78±1959.79 mg and the mean spot uPCR was 3.16±1.52 in al

关键词： Glomerulopathies 24-h proteinuria Spot urinary protein-to-creatinine ratio Correlation Proteinuria Agreement

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Physiological and biochemical appraisal for mulching and partial rhizosphere drying of cotton

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Journal of Arid Land 2019年第5期11卷 785-794页

作者： Rashid IQBAL Muhammad A S raza Muhammad F SALEEM Imran H KHAN Salman AHMAD Muhammad S ZAHEER Muhammad U ASLAM Imran haider Department of Agronomy College of Agriculture and Environmental SciencesIslamia University of BahawalpurBahawalpur 63100Pakistan Department of Agronomy University of AgricultureFaisalabad 38040Pakistan Department of Agronomy Nanjing Agricultural UniversityNanjing 210000China

Water is the main factor for the healthy life of *** of the main negative effects of climate change is the increasing scarcity of water that is lethal for ***,for water deficit regions(arid and semi-arid),drought is the main factor responsible for low production of agriculture,especially for *** efforts have been and are being made to find alternatives to water saving *** study aimed to examine the effects of partial rhizosphere drying(PRD,half of the root system irrigated at one event,and the other half irrigated in the next event,and so on)with and/or without various mulching treatments on physiological and biochemical traits of *** explore this objective,we laid out experiments in completely randomized design with factorial arrangement in the Islamia University of Bahawalpur,Pakistan in *** factors included were four mulching treatments(M0,no mulching;M1,black plastic mulching;M2,wheat straw mulching;and M3,cotton sticks mulching)and two irrigation levels(I0,control(full irrigation);and I1,PRD).Fisher's analysis of variance among means of treatments was compared using least significant difference test at 5% probability *** revealed that the maximum plant height,leaf area,leaf gas exchange(photosynthetic rate and stomata conductance),chlorophyll,proline and total sugar contents,and enzyme activities were higher under M2 than under other three mulching *** for irrigation levels,higher values of plant height,photosynthesis and water related parameters(leaf water potential,leaf osmotic potential,leaf turgor potential,etc.)were *** of total sugar and proline and activities of antioxidant enzymes were significantly higher in PRD-treated plants than in control *** was concluded that combined application of PRD and mulching was more effective than the rest of the treatments used in the *** study can be conducted in the field by applying irrigation water in alternate row

关键词： antioxidant enzymes mulching partial rhizosphere drying photosynthetic rate stomatal conductance

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中国荷斯坦牛CSN3基因多态性及其与泌乳性状的关联性

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西北农林科技大学学报（自然科学版） 2018年第3期46卷 8-15页

作者：胡言桂林生余横伟 haider Abbas raza 昝林森西北农林科技大学动物科技学院陕西杨凌712100 现代牛业生物技术与应用国家地方联合工程研究中心陕西杨凌712100

【目的】研究中国荷斯坦牛CSN3基因的多态性,并探索其与泌乳性状的关系。【方法】采用DNA测序方法,对565头中国荷斯坦牛CSN3基因进行群体变异分析,将检测到的单核苷酸多态性(SNP)位点与中国荷斯坦牛泌乳性状进行关联性分析,同时分析不... 详细信息

【目的】研究中国荷斯坦牛CSN3基因的多态性,并探索其与泌乳性状的关系。【方法】采用DNA测序方法,对565头中国荷斯坦牛CSN3基因进行群体变异分析,将检测到的单核苷酸多态性(SNP)位点与中国荷斯坦牛泌乳性状进行关联性分析,同时分析不同双倍型对中国荷斯坦牛泌乳性状的影响。【结果】从中国荷斯坦牛CSN3基因中共检测到4个SNP位点,分别为g.463A>G、g.1012A>C、g.2015T>A和g.2396A>T,除g.2396A>T外,其余3个SNPs位点与中国荷斯坦牛泌乳性状紧密关联,其中g.463A>G、g.2015T>A均可以显著影响乳脂率和乳蛋白率,g.1012A>C可以显著影响乳脂率。双倍型关联性分析发现,H14H14的乳脂率显著或极显著高于其他双倍型。【结论】CSN3基因可以作为中国荷斯坦牛泌乳性状的候选基因用于标记辅助选择。

关键词：中国荷斯坦牛 CSN3基因多态性泌乳性状关联性分析

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Demand and Response in Smart Grids for Modern Power System

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Smart Grid and Renewable Energy 2013年第2期4卷 133-136页

作者： Muhammad Qamar raza Muhammad Usman haider S. Muhammad Ali Muhammad Zeeshan Rashid Farooq Sharif Department of Electrical Engineering COMSATS Institute of Information Technology Abbottabad Pakistan Department of Electrical Engineering Islamia University of Bahawalpur Bahawalpur Pakistan. Department of Electrical Engineering The University of Faisalabad Faisalabad Pakistan

Micro-grid plays a vital role in fulfilling the increasing demand by using distributed renewable energy resources. Demand and response technique can be broadly classified under the setup DR deployed (e.g. ISO’s/RTO’s). Demand response program can be implemented to improve power system quality, reliability and increasing demand. In modern power industry, strategic player can take more benefit from more emphasized DR study in terms of social benefit (uninterrupted power supply to consumers) and economy. This paper proposes the distributed micro-grid control and implemented control setup implemented demand response algorithm, which provides better power system reliability. This paper presents contingencies control demand and response for micro-grid. The main advantage of implementation of demand and response algorithms in Micro-grids provides reliable power supplies to consumers. The proposed micro-grid TCP/IP setup provides a chance to respond the contingencies to recover the shed to active condition. Micro-grid controller implements demand and response algorithm reasonable for managing the demand of the load and intelligent load scheme in case of blackout.

关键词： Demand Response (DR) Micro-Grid (MG) Power System Reliability Distributed Generation (DG) Renewable Energy Resources (RER) Power System Contingencies

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Quantifying Effects of Photoperiod, Temperature and Humidity on Flowering Initiation in Basmati Rice Lines

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American Journal of Plant Sciences 2019年第6期10卷 893-903页

作者： Tahir Latif Zulqarnain haider Muhammad Ramzan Muhammad Akhter Sadia Gull Abid Mahmood Awais Riaz Rana Ahsen raza Khan Rice Research Institute Lahore Pakistan Pakistan Agriculture Research Council Kala Shah Kaku Pakistan Yangzhou University Yangzhou China Ayub Agricultural Research Institute Faisalabad Pakistan

The results suggested that all the pure Basmati lines or genotypes initiate flowering within a specific range of day length duration and temperature. Delaying the transplanting date did not significantly affect the flowering time of studied Basmati lines. Maximum threshold of daily minimum temperature (MT) was 24°C during both the years. Likewise, maximum threshold of daily day-length (DL) durations was 12 hours and 18 minutes during both the study years. Results showed that the flowering was maximum when the MT and DL values were optimum as depicted by peak of the trend lines, where maximum lines flowered. Maximum flowering initiations took place when DL was about 11 hours and 15 minutes indicating Basmati as short day plant which flowers maximum when day lengths are shorter and dark or night duration is longer. During 2013, 1st date trial showed strong relationship between flowering initiation with dates of flowering during the flowering period as depicted by higher regression (R2 = 0.837) values. In 2nd date trial during the same year, the value is lower (R2 = 0.513) depicting less relationship of flowering initiation with the dates of flowering. The same trend was observed in 2014 trial. In 1st date trial, strong relationship between flowering initiation with dates of flowering during the flowering period as depicted by higher regression (R2 = 0.864) values, was observed. In 2nd date trial during the same year, the value is lower (R2 = 0.1789) depicting very poor relationship of flowering initiation with the dates of flowering, and the same trend (R2 = 0.0544) in 3rd date of trial.

关键词： Basmati Rice Flowering Photoperiod Temperature Humidity

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Risk factors for colonoscopic perforation: A population-based study of 80118 cases

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World Journal of Gastroenterology 2013年第23期19卷 3596-3601页

作者： Uzair Hamdani raza Naeem Fyeza haider Pardeep Bansal Michael Komar David L Diehl H Lester Kirchner Department of Gastroenterology Geisinger Medical CenterDanville PA 17822 United States Department of Gastroenterology Good Samaritan HospitalVincennes IN 47591 United States Central Indiana Gastroenterology Anderson IN 46016 United States Division of Medicine Gesinger Medical CenterDanville PA 17822 United States

AIM: To assess the incidence and risk factors associated with colonic perforation due to colonoscopy. METHODS: This was a retrospective cross-sectional study. Patients were retrospectively eligible for inclusion if they were 18 years and older and had an inpatient or outpatient colonoscopy procedure code in any facility within the Geisinger Health System during the period from January 1, 2002 to August 25, 2010. Data are presented as median and inter-quartile range, for continuous variables, and as frequency and percentage for categorical variables. Baseline comparisons across those with and without a perforation were made using the two-sample t -test and Pearson's χ2 test, as ***: A total of 50 perforations were diagnosed out of 80118 colonoscopies, which corresponded to an incidence of 0.06% (95%CI: 0.05-0.08) or a rate of 6.2 per 10000 colonoscopies. All possible risk factors associated with colonic perforation with a P -value < 0.1 were checked for inclusion in a multivariable logbinomial regression model predicting 7-d colonic perforation. The final model resulted in the following risk factors which were significantly associated with risk of colonic perforation: age, gender, body mass index, albumin level, intensive care unit (ICU) patients, inpatient setting, and abdominal pain and Crohn's disease as indications for colonoscopy. CONCLUSION: The cumulative 7 d incidence of colonic perforation in this cohort was 0.06%. Advanced age and female gender were significantly more likely to have perforation. Increasing albumin and BMI resulted in decreased risk of colonic perforation. Having a colonoscopy indication of abdominal pain or Crohn's disease resulted in a higher risk of colonic perforation. Colonoscopies performed in inpatients and particularly the ICU setting had substantially greater odds of perforation. Biopsy and polypectomy did not increase the risk of perforation and only three perforations occurred with screening colonoscopy.

关键词： Colonoscopic perforation Colon cancer Endosocopy

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A Hybrid Method for Edge Continuity Based on Pixel Neighbors Pattern Analysis (PNPA) for Remote Sensing Satellite Images

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International Journal of Communications, Network and System Sciences 2012年第9期5卷 624-630页

作者： Waqas haider Muhammad Sharif Malik Mudassar raza Abdul Wahab Izhar Ahmed Khan Umar Zia Jawad Tanveer Hadia Bashir Department of Computer Science COMSATS Institute of Information Technology Wah Cantt and Vehari Campus Pakistan

Edge enhancement is derived from lack of accurate result from edge detection techniques. The image which is captured from long distances carries a lot of noise and blur which causes edge discontinuity. Although some novel algorithms which are based on cellular neural network, fuzzy enhancement and binary morphology have shown accuracy in order to obtain refined edge but still the problem of edge discontinuity arises. Eliminating discontinuity of edge a hybrid technique is proposed based on pixel neighbors pattern analysis PNPA. In the technique Canny operator for initial edge detection, PNPA operation for edge enhancement are performed for remote sensing satellite image successively. The visual and subjective evaluation shows that the proposed PNPA operation can effectively eliminate the influence of edge discontinuity which occurred due to noise and blurr in original captured image, as comparing to existing edge segmenting processes.

关键词： Edge Detection Edge Enhancement

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