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Multi-Agent Control System for Residential Energy and Comfort Management

Thesis Info

Author

Sana Tahir

Supervisor

Obaid Ur Rehman

Department

Department of Electrical Engineering

Program

BCE

Institute

COMSATS University Islamabad

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Electrical Engineering

Language

English

Added

2021-02-17 19:49:13

Modified

2023-01-06 19:20:37

ARI ID

1676720320069

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ددھیال

پروفیسر عبدالحق کی پرورش جس پر نور اور سادہ ماحول میں ہوئی اس سے یہ اندازہ لگانامشکل ہے کہ ان کی تعلیم کی ابتدا کب ہوئی ۔ لیکن اتنے اشارے ضرور ملتے ہیں کہ چار سال کی عمر میں انہیں گاؤں کے مکتب میں داخل کیا گیا ۔ اس مکتب میں گاؤں کے ایک مولوی مظفر حسین پڑھایا کرتے تھے۔ انہی مولوی صاحب نے پروفیسر عبد الحق کی تاریخ پیدائش سکول رجسٹر میں لکھی اور ان کی قیاسی تاریخ ولادت ۲ مارچ ۱۹۳۹ قرار پائی گاؤں کے اس سکول کے علاوہ پروفیسر عبد الحق قرآن شریف پڑھنے کے لیے بھی جایا کرتے تھے۔ گاؤں کی ایک محترم خاتون جو قصبہ مچھلی شہر سے بیاہ کر لائی گئی تھیں۔ جب بیوہ ہو گئیں تو انہوں نے پہاڑ پور کے بچوں کو قرآن پڑھانا شروع کر دیا۔ وہ بھی پہاڑ پور گاؤں کی پہلی پڑھی لکھی خاتون تھیں جن کے فیض سے تقریباً پندرہ سال تک بچوں نے قرآن شریف پڑھنا سیکھا۔ قسمت کی یاوری دیکھیے کہ پروفیسر عبد الحق نے ایسا زمانہ اور ایسا عرصہ حیات پایا جس میں ان کے گاؤں کے ممتاز اور نابغہ روزگار لوگوں سے ان کا سابقہ پڑا اور انہیں ایسی کروٹ بدلتی ہوئی زندگی میں سانس لینے کا موقع ملا جس سے ان کے اندر بھی کچھ کر گزرنے کی آرزوؤں اور ترقی کی راہ پر گامزن ہو نیوالی ابھرتی ہوئی دنیا کے خوابوں کو دیکھنے کا حوصلہ پیدا ہوا۔ بہر کیف سرکاری نہج کے سکول اور اسلامی مدرسہ کی تعلیم دونوں ساتھ ساتھ گامزن رہے۔ گاؤں کے اس سرکاری سکول میں جسے لوگ مکتب کہتے تھے درجہ تین تک تعلیم دی جاتی تھی۔ اس تعلیم سے فارغ ہونے کے بعد پروفیسر عبدالحق نے مچھلی شہر کے سرکاری اسلامیہ سکول میں درجہ چہارم میں داخلہ لیا۔ اس کے لیے انہیں روزانہ پانچ...

عہد خلفاء راشدین اور اسلاموفوبیا

Islamophobia is a term that refers to prejudice or discrimination against Islam and Muslim. The roots of Islamophobia can be traced back to the distant past. Hypocrate Abd Ullah b. Ubbay Al-Salul was the first Islamophobic person in the era of Holy Prophet Muhammad (SAWS) and then farther Abd Ullah b. Saba in the era of The Rashidun Khalips. They can be considered as the precursor of Islamophobia.

Polymer Based Catalytic Systems for Different Organic Reactions

Acrylamide based nearly mono-disperse polymer microgels including poly(N-isopropylacrylamide-co-acrylamide) and Poly(N-isopropylacrylamide-acrylic acid-acrylamide) with different feed compositions were synthesized using precipitation polymerization in aqueous medium. These microgels were used as micro-reactors to fabricate silver nanoparticles by chemical reduction of silver ions inside the polymer network. The pure and hybrid microgels were characterized by using Fourier transform infra-red spectroscopy (FTIR), UV Visible spectroscopy (UV Vis), Dynamic light scattering (DLS), X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Differential scanning calorimetry (DSC), Scanning electron microscopy (SEM), Energy Dispersive X-ray (EDX),Transmission electron microscopy (TEM) and Scanning transmission electron microscopy (STEM). Ag contents in the hybrid system were determined by ICP-OES. Results revealed that spherical silver nanoparticles having diameter of 10-20 nm were successfully fabricated within the microgels with hydrodynamic diameter of 250±50 nm. The uniformly loaded silver nanoparticles were found to be stable for long time due to donor-acceptor interaction between amide groups of polymer network and silver nanoparticles. Catalytic activity of the hybrid systems was initially tested by choosing catalytic reduction of 4-nitrophenol as a model reaction under various conditions of catalyst dose and concentration of NaBH4 at room temperature in aqueous medium to explore the insights of catalysis process. The progress of the reaction was monitored by UV Visible Spectrophotometry. The pseudo first order kinetic model was employed to evaluate the apparent rate constant of the reaction. It was found that the value of apparent constant increases with increase of catalyst dose due to increase of surface area as a result of increase of number of nanoparticles. The Ag- poly(N-isopropylacrylamide-co-acrylamide) hybrid microgels were found to be temperature sensitive and Ag-Poly(N-isopropylacrylamide-acrylic acid-acrylamide) hybrid microgels both temperature and pH sensitive in aqueous medium. Ag-Poly(N-isopropylacrylamide-acrylic acid-acrylamide) hybrid microgels have long term stability under various conditions of pH of the medium. The hybrid microgels were used as catalysts for simultaneous reduction of various nitro compounds in aqueous medium. Nitroarenes like o-nitroaniline (o-NA), p-nitroaniline (p-NA), p-nitrophenol (p-NP) and nitrobenzene (NB) were individually and simultaneously reduced to corresponding amino-aromatic compounds by sodium borohydride in the presence of Ag-Poly(N-isopropylacrylamide-acrylic acid-acrylamide) hybrid microgels catalyst. Catalytic activity of the hybrid microgels for individual and simultaneous reduction of nitroarenes was compared with each other. The retardation in catalytic reduction of each nitroarene in the presence of other nitroarenes was explained on the basis of simultaneous adsorption. Various factors affecting the catalytic reduction of p-nitroaniline (p-NA) like catalyst dose and pH of the medium were also investigated. Rate of reduction of p-nitroaniline was found to be increased with increase of catalyst dose and pH of the medium. Various nitroarenes were successfully converted into their respective aromatic amines with good to excellent yields (ranging from 75% to 97%) under mild reaction conditions in the presence of Ag-Poly(N-isopropylacrylamide-acrylic acid-acrylamide) and Pd-Poly(N-isopropylacrylamide-acrylic acid-acrylamide) hybrid microgels. The catalyst has ability to successfully convert substituted nitroarenes into desired products keeping many functionalities intact. Pd-Poly(N-isopropylacrylamide-acrylic acid-acrylamide) hybrid microgels were also found to active for a variety of Suzuki coupling reaction. The catalyst can be stored for long time without any sign of aggregation and can be used multiple times without any significant loss in its catalytic activity.