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Scattering of Electromagnetic Waves from Perfect Electromagnetic Conductor Pemc Structures

Thesis Info

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Author

Shakeel Ahmed

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2009

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/461

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727136059

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Scattering of electromagnetic waves from two dimensional cylindrical structures composed of perfect electromagnetic conductor (PEMC) material has been studied. Response of these two dimensional structures in terms of co-polarized and cross- polarized scattered fields, scattering widths, and radiation power gain has been ob- served. Scattering behavior of parallel PEMC circular cylinders, rectangular PEMC strip, and strip grating in free space have been considered when they are illuminated by an electromagnetic plane wave. Characteristics of a coated PEMC cylinder are found in comparison to an uncoated one taking dispersion and dissipation of the coating layer into account. Effects of many electromagnetic plane waves on a coated PEMC cylinder has also been analyzed. The effects of the PEMC core has been noted on the direc- tivity of the geometry containing a line source nearby a coated PEMC cylinder. Also contribution to the the scattered field in free space due to a PEMC circular cylinder buried inside the dielectric half space is found. Throughout discussion, the numerical results are compared with the published literature under some special conditions and are found in good agreement.
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٣۔ عساکر میں نعت کا ابتدائیہ اور افواجِ پاکستان کے نعت گو

عساکر میں نعت کا ابتدائیہ اور افواجِ پاکستان کے نعت گو

شاکر کنڈان(سرگودھا)

فوج اور نعت اگر چہ دو مختلف موضوعات ہیں لیکن یہ دونوں موضوع جابتداء سے ایک دوسرے کے ساتھ جڑے ہوئے ہیں ۔فوج کو ہم عسکریت سے منسلک کرتے ہیں اور عسکریت کو ہتھیاروں کے استعمال سے سے ۔

ماہرین ِلسانیات یا علمائے تاریخ کا کہنا ہے کہ پانچ ہزار سال قبل مسیح سے پہلے کی تاریخ ہماری معلومات سے اوجھل ہے لیکن انسانی وجود کو وہ کروڑوں سال پر محیط بتاتے ہیں ۔اگر اس مفروضے کو مان بھی لیا جائے تو پھر بھی ہمیں اسی دور سے تاریخ و تہذیب کے آغاز کوبھی تسلیم کرنا پڑے گا جو ہماری تاریخ ہمیں بتاتی ہے ۔میری سمجھ سے تو یہ بالا ہے کہ ہم مٖفروضوں کوسچ ماننے میں تو تاخیر نہیں کرتے لیکن سچ کا سامنا کرتے ہوئے ہماری جان جاتی ہے ۔

در اصل جومعلوم تاریخ ہمیں پانچ ہزار سال قبل مسیح ملتی ہے یہ وہ ہے جس کے بارے میں توریت ہماری رہنمائی کرتی ہے یا پھر قرآنِ مجید فرقانِ حمید ہمیں آگاہ فرماتا ہے ۔یہاں پانچ ہزار سال کو ماننے کے لئے تو ہم تیار ہیں لیکن اسلام کی دی ہوئی باقی آگاہی سے ہم آگاہ ہونا ہی نہیں چاہتے کیوں کہ ہمارے ذہنوں پر دوسروں کے علم کا بھوت اس حد تک سوار ہو چکا ہے کہ ہمیں اپنی ذات پر اعتماد ہی نہیں رہا ۔دوسروں کی لغویات کو ہم نے سچائی کے مقام پر فائز کر دیا اور اپنے حقائق کو تسلیم کرنے سے اس لئے قاصر رہے کہ ہم تحقیق سے پہلو تہی کرتے ہیں ۔

توریت کے بابِ پیدائش میں پہلا انسان حضرت آدم ؑ کو تسلیم کیا گیا ہے اور قرآنِ مجید...

Language Localization of Foreign Dramas in Pakistan: Transmogrifying Cognizance Against Zealotry and Bigotry

Language localization codes modern world to dilate trade and surplus. Capitalists approach far off markets by localizing their products to tantalize autochthonous consumers. Creative arts are immensely influenced by dubbed localization. Films and dramas are dubbed and localized in target cultures and languages to amplify the global market. This is proliferating a hybrid popular culture. Localization can be adapted as a tool to educate people and to broaden their approach towards life. This paper is exploring positive impact of localized foreign dramas in conservative and hidebound societies. This study presents a basic survey of culturally and linguistically sensitive localization of foreign dramas and its clout on Pakistani society. Three dramas from different cultures and ethnicities have been selected to analyze the power of localized visual arts to influence the thought of masses. The Korean drama “Dae Jang Geum, A Jewel in the Palace”, The Iranian drama “Roz e Hasrat” and the Turkish drama “Fatima Gul Mera kasur kia ha” are part of this study. This paper focuses on two basic questions. How localization influence a target culture in this global \capitalist world? How can we apply this power of localization to reduce bigotry in Pakistani society?

The Headteacher’S Role in Motivating Teachers to Work in a Secondary School Facing Adverse Circumstances

The teachers in public sector school, in most of the developing countries, are working in challenging circumstances in terms of lack of physical resources. In Pakistan, the situation is not different. In most of the public schools in Pakistan, the teachers are confronted with lack of physical resources which has contributed to a large extent in their demotivation towards their work. Recent studies also point out that it is only the teachers' working context which motivates or demotivates them. The research also recommends for the exploration of factors within the school context, which can contribute to teacher motivation. Research assumes that when teachers' work context is conducive for their motivation, then they are motivated. Literature considers that the head teacher can create an environment in the school through his/her influential role, which motivates teachers towards their work. This small scale qualitative case study was conducted for exploring the role of the head teacher in motivating teachers to work in a school facing adverse circumstances. The study had four research participants that is, the head teacher and three teachers. The study was conducted in a secondary school run by a Trust, with little or no physical resources, yet the teachers were found to be motivated. The head teacher was found motivated towards making the school environment appealing for the teachers. The school environment comprised a clear vision, both for the whole school and individual teachers. The vision of the school was well-conveyed to the teachers by the head teacher, who encouraged the teachers to set their individual goals. The head teacher’s approach heartened teachers to work collaboratively towards the achievement of their goals. He also involved teachers in decision making and empowered them as autonomous professionals. He developed friendly relationships with the teachers and appreciated their efforts. The study found the lack of physical resources as a big challenge for the head teacher in motivating teachers. However, the head teacher’s role of standing by the teachers in any kind of situation and leading by setting a personal example enable him to deal with these challenges and this also made the teachers stand by him in any kind of situation.