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Novel Fractal-Based Features for Low-Power Appliances in Non-Intrusive Load Monitoring

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Computers, Materials & Continua 2024年第7期80卷 507-526页

作者： Anam Mughees Muhammad kamran Department of Electrical Engineering University of Engineering and Technology(UET)Lahore54890Pakistan Department of Electrical Engineering Government College UniversityFaisalabad38000Pakistan Department of Electrical Engineering and Technology Muhammad Nawaz Sharif University of Engineering&Technology(MNS UET)Multan60000Pakistan

Non-intrusive load monitoring is a method that disaggregates the overall energy consumption of a building to estimate the electric power usage and operating status of each appliance *** studies have mostly concentrated on the identification of high-power appliances like HVAC systems while overlooking the existence of low-power ***-power consumer appliances have comparable power consumption patterns,which can complicate the detection task and can be mistaken as *** research tackles the problem of classification of low-power appliances and uses turn-on current transients to extract novel features and develop unique appliance signatures.A hybrid feature extraction method based on mono-fractal and multi-fractal analysis is proposed for identifying low-power *** dimension,Hurst exponent,multifractal spectrum and the Hölder exponents of switching current transient signals are extracted to develop various‘turn-on’appliance signatures for *** classifiers,i.e.,deep neural network,support vector machine,decision trees,and K-nearest neighbours have been optimized using Bayesian optimization and trained using the extracted *** simulated results showed that the proposed method consistently outperforms state-of-the-art feature extraction methods across all optimized classifiers,achieving an accuracy of up to 96%in classifying low-power appliances.

关键词： Nonintrusive load monitoring multi-fractal analysis appliance classification switching transients

Numerical study of the effects of split injection strategy and swirl ratio for biodiesel PCCI combustion and emissions

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Propulsion and Power Research 2020年第4期9卷 355-371页

作者： Alborz Zehni Navid Balazadeh Mojtaba Hajibabaei kamran Poorghasemi Engine Research Center Mega Motor CorpTehranIran Department of Mechanical Engineering Sharif University of TechnologyTehranIran Department of Mechanical Engineering Iran University of Science and TechnologyTehranIran Department of Mechanical Engineering Shabestar BranchIslamic Azad UniversityShabestarIran

New methods have been studied in the past few decades to decrease exhaust emissions and fuel consumption of diesel *** new combustion methods as low-temperature combustion(LTC)strategies and also utilizing new fuels as bio-diesel are beneficial ways to overcome diesel engine *** numerical study focused on the effect of split injection strategies as well as swirl ratio(SR)on the biodiesel premixed charge compression ignition(PCCI)combustion process and the related *** this regard,KIVA-3V code as a CFD tool has been utilized to analyze the combustion and emission characteristics of the diesel *** and split injection strategies have been executed on biodiesel PCCI combustion and have been compared in order to probe and examine the injection *** results show that in both strategies,advancing the injection timing can lower the combustion emission and improve the engine performance by optimizing the start of injection(SOI)as sweet spot *** a high swirl ratio with the split injection strategy has a negative effect on overall combustion,emission,and performance in comparison with the single injection *** multi-injection scheme,SOI=−35 ATDC,SR=1.1,and for single injection scheme,SOI=−40 ATDC,SR=1.1 are considered as optimum cases regarding minimum total exhaust emissions and highest performance.

关键词： Premixed charge compression ignition(PCCI) Split injection Swirl ratio Biodiesel Combustion Emission

A comparative study of optimization algorithms for wavefront shaping

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Journal of Innovative Optical Health Sciences 2019年第4期12卷 74-82页

作者： Zahra Fayyaz Nafiseh Mohammadian M.Reza Rahimi Tabar Rayyan Manwar kamran(Mohammad)Avanaki Department of Physics sharif University of Technology Tehran 11365-9161 Iran Biomedical Engineering Department Wayne State University DetroitMI 48201USA Department of Dermatology Wayne State University School of Medicine DetroitMI 48202USA Barbara Ann Karmanos Cancer Institute Detroit MI 48202USA

By manipulating the phase map of a wavefront of light using a spatial light modulator,the scattered light can be sharply focused on a specific *** iterative optimization algo-rithrns for obtaining the optimumn phase map have been ***,there has not been a comparative study on the performance of these *** this paper,six optimization algorithms for wavefront shaping inchuding continuous sequential,partitioning algorithm,transmission matrix estimation method,particle swarm optimization,genetic algorithm(GA),and simulated annealing(SA)are discussed and compared based on their efficiency when introduced with various measurement noise levels.

关键词： Wave front shaping algorithms optimization turbid media wavefront shaping

Induced Production of Exoglucanase, and β-Glucosidase from Fungal Co-Culture of T. virideand G. lucidum

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Advances in Bioscience and Biotechnology 2014年第5期5卷 426-433页

作者： Tanzila Shahzadi Zahid Anwar Zafar Iqbal Awais Anjum Tahir Aqil Bakhtawar Arroha Afzal Muhammad kamran Sajid Mehmood Muhammad Irshad Agriculture Biotechnology National Institute for Biotechnology and Genetic Engineering Faisalabad Pakistan Department of Biochemistry Nawaz Sharif Medical College University of Gujrat Gujrat Pakistan Department of Botany University of Gujrat Gujrat Pakistan Department of Microbiology Quaid-e-Azam University Islamabad Pakistan

In the present study, a co-culture technique was adopted with an aim to investigate a hyper production of exoglucanase, and β-glucosidase using cheap and easily available agro-industrial residue corn stover as growth supporting substrate. Various physio-chemical and nutritional variables were optimized using classical and completely randomized designs for induced production of exoglucanase, and β-glucosidase from the co-culture of Trichoderma viride and Ganoderma lucidum in solid state fermentation (SSF). Analysis profile showed that when the conditions of the SSF medium containing 15 g corn stover substrate (50% w/w moisture) inoculated with 6 mL of inoculum were optimal, the maximum productions of exoglucanase (485 ± 6.5 U/mL) and β-glucosidase (255 ± 3.3 U/mL) were recorded after 5 days of incubation at pH 6 and 35°C.

关键词： Process Optimization SSF Co-Culture T. viride G. lucidum

Interactive Optimization of Impressive Parameters Middling in Biological Leaching

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Journal of Chemistry and Chemical Engineering 2011年第4期5卷 336-347页

作者： Sirous Nazari Perchestan Mohammad Soleimani Alireza Najafi Aidin Sadeh Sinaki Fahimeh Nemati Morteza Mohajeri Amiri Ali Navabzade kamran Jafari Mohammad Taghi Moazed Islamic Azad University Ahvaz 6349-68875 Iran Department of Chemical and Petroleum Engineering Sharif University of Technology Tehran 11365-11155 Iran Chemical and Petroleum Engineering School Shiraz University Shiraz 71345 Iran Islamic Azad University Omidiyeh Branch 63731-93719 Iran Islamic Azad University North Tehran Branch 16679-34783Iran Islamic Azad University Karaj Branch 31485-313 Iran

In this study, single and interactive effect of three parameters, pH, ferrous and pulp concentration has been investigated by a 2^3 full factorial CCRD （central composite rotatable design） composed of eight factorial points, six central and six axial points. Initially, ＂none＂ mode from transformation subsection was chosen as the default choice for both responses, i.e. %recovery and gram of recovered zinc. Box-Cox plots give the best Lambda for each response （y^Lambda= f （A, B, C .....）） which occur at 1.91 and 2.16 for %recovey and gram of recovered zinc, respectively. A linear （y^1.91 = f （linear）） and a quadratic （y^2. 16= f （quadratic）） equation were suggested by software as the model for %recovery and gram of recovered zinc, respectively. Analysis of variance （ANOVA） for both models shows a high coefficient of determination （R^2）. In order to optimize and find the best conditions under which three parameters occur appropriately, optimization was done numerically. Desirability plots indicate properly that the best conditions occur at pH = 1.46, ferrous = 6.67 g/L, %pulp = 7.1 （%w/v）, %recovery = 86.5, gram of recovered zinc = 0.63 g and desirability = 0.777. Finally, PRP （progressive route of the process） analysis donates us a proper insight of what is happening during these 30 days. PRP analysis categorizes flasks in two parts, 1- flasks worth economically, 2- flasks with one-time-usable feed materials.

关键词： Central composite rotatable design (CCRD) response surface methodology (RSM) impressive bioleaching parameters optimization progressive route of the process analysis.