Search or add a thesis

Advanced Search (Beta)
Home > Scattering of Electromagnetic Waves from a Pemc Circular Cylinder Placed under Wide Double Wedge

Scattering of Electromagnetic Waves from a Pemc Circular Cylinder Placed under Wide Double Wedge

Thesis Info

Access Option

External Link

Author

Naveed, Muhammad

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2011

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/2001

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727136014

Similar


A new wedge diffraction function, called as Naveed-Naqvi-Hongo (NNH) wedge diffraction function, is derived and evaluated asymptotically by applying the steepest descent method. It is found that the total field with NNH solution is continuous at the shadow boundaries and gives the well known non-uniform expression for the observa- tion point far from the shadow boundaries. Numerical comparison of NNH solution is made with exact series solution and Pauli-Kouyumjian-Pathak (PKP) result. It is found that the agreement among these three is fairly well. In contrast to the ex- pressions proposed by Kouyoumjian and Pathak, the NNH solution does not need the parameters to switch for the region of validity, hence it is easier to make a numerical code. The validity of NNH wedge diffraction function is further checked by evaluating the diffracted field from a geometry which contains an infinite slit in a perfect electric conducting (PEC) plane. It is further extended to a more complex geometry consisting of two parallel PEC wedges and a perfect electromagnetic conductor (PEMC) circular cylinder which is placed under the PEC wide double wedge. It is found that by using the NNH solution, the results evaluated for some special cases, including the trans- mission coefficient of PEC slit, are in fairly good agreement with the published work. The transmission coefficient and the diffraction pattern of PEC wide double wedge is studied and elaborated by considering a geometry consisting of a coated PEMC cylin- der placed under the two parallel wedges. The cylinder is coated with double positive (DPS) or double negative (DNG) materials. Finally, a comparison of the transmission coefficient of PEC geometry, as evaluated by using NNH solution, is made with the geometry of more practical nature, that is, an impedance slit
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

المبحث الثالث: الأدب النسائي في اللغة الأردية

المبحث الثالث: الأدب النسائي في اللغة الأردية

 لقد تغیر أحوال الباکستان بعد توحیدہ وتغیر أحوال الناس والمجتمع۔۔۔ وحتی الأدب والشعر طرأ علیھما الکثیر من التغییرات وتغیرت لغۃ الغزل بعد ان کانت لغۃ جامدۃ قویۃ لا تقبل التغییر ولکن بعد توحید الباکستان أصبحت ھذہ اللغۃ مرنۃ متطورۃ تقبل التغیر، واختار الشعراء لغۃ سھلۃ وأسلوبًا رقیقًا وتعبیر ًامتناغمًا مع العصر والمجتمع وتغیرت موضوعات الغزل من تغیر الحالات والضروریات۔ واتسعت مجالات الأدب وتقدم الغزل وأقبلت التغییرات وتعرفت علی کلِ ما ھو مقبول ومعروف۔ وقام الكثير من الشعراء والشاعرات ينظمون قصائدهم في اللغة الأردية، ودخل في الشعر أسلوب مرن، سھل، لا صعوبۃ فیہ ولا تعقید، أسلوب قریب من النثر ویُقال لھذا النوع من الشعر في الأردو(نثري نظم) ویقال في الأدب العربي الشعر الحُر۔

 وفي عام 1972دخل ھذا النوع الجدید من الشعر في الأدب الأردو وکون لنفسہ مکانۃ بین القُراء والأدباء وھذا النوع من الشعر (الشعر الحُر) یطابق العصر ویمکن أن یتناول مواضیع مختلفة متنوعۃ۔

 تخلص الغزل الحديث من التکلفات والزخرفات وتقدم إلی التجرید مع أنھ يتناول الخیالات والأفکار والأحاسیس الجدیدة، والشاعرات الباکستانیات قد من الکثیر للأدب قبل توحید الباکستان ولکن کانت أفکارھن مقیدۃ بقیود المجتمع ومع ھذا حاولن الإعراب عن أفکارھن ومشاعرهن ولکن بعد التوحید تظاھرت النساء بجرأۃ أکبر وتناولن مواضیع أکثر وذلک حسب ضرورات المجتمع وخاصةً شاعرات اللغة الأردية . لأن بازدیاد الناس تزداد المسائل، وقد قدمت شاعرات العصر الجدید للأدب کل ما ھو جدید ومتطور ویقبل التغییر والتعدیل مع أفکارھن الجدیدۃ والفھم المتطور والذوق الرفیع والأسالیب الحدیثۃ والمواضیع المختلفۃ الموافقۃ للعصر الحدیث۔ ومن أھم ھؤلاء الشاعرات ادا جعفري، کشور ناھید، فھمیدہ مرزا اللاتي فتحن مجالًا کبیرًا لإدخال شاعرات جدیدات وبالفعل حصل ھذا وقد تم التعرف علی شاعرات متقدمات ومتطورات ذھنیاً وعقلیاً وعلمیاً وأدبیاً ومن بینھن (پروین شاکر) الإسم المتلألئ في عالم الأدب والشعر الحدیث۔

 

Muhammad’s (Saw) Treatment of the Jewish Tribes: A Critique of Robert Spencer’s Views

It is incontrovertibly true that Islam advocates peaceful coexistence with the adherents of other creeds. The holy Qur’an, the primary source of Islamic Shari‘ah, vividly recommends freedom of conscience and religion. Similarly, the prophet (SAW), being the perfect role model for the entire humanity, preached and practiced the lofty ideals propounded by the holy Qur’an and peacefully coexisted with the followers of Judaism and Christianity. Furthermore, the four rightly guided caliphs exhibited tolerant attitude towards their Jews and Christian subjects. In the presence of these models, nonetheless, many contemporary critics of Islam are disinclined to admit this explicit reality. Robert Spencer also sees eye to eye with them. Robert Spencer is an American author and he has published twelve books. He is a member of Melkite Greek Catholic Church. He looks on Islam as a highly intolerant religion. In this connection, he singles out Muhammad’s (SAW) treatment of various Jewish tribes. He maintains that all Jewish tribes viz. Banu Na╔hir, Banu Qaiʽn┴q┐ʽ and Banu Qurai╔ah “received the wrath of Muhammad”. This brief study aims to prove that the treatment meted out to the Jews was not founded on religious prejudice and malice; it was rather commensurate with their wicked demeanor.

Impact of Corporate Governance of Earnings Management and Cost of Capital: Evidence from Pakistan

CoC, this study measures it through the weighted average cost of capital (WACC). CG is measured through an index developed from different factors of CG namely Board of Directors (BoD), Ownership and shareholding, and transparency, disclosure, and auditing. The study also includes control variables of the size of the firm, performance, leverage, capital expenditures, and cash flows from operations, Beta and gross domestic product growth rate. For the first stage of the thesis, the results show that CG significantly and negatively affects EM practices and this association is statistically significant. In stage two, the association of CG and CoC is negative and statistically significant. In the last stage of the thesis, the study finds that EM is positively associated with CoC and the association is statistically significant. The overall findings of the study support the theoretical justifications that a strong and efficient system of CG ensures the dissemination of information to the concerned quarters and all stakeholders through the disclosure requirements of a firm. This disclosure of information not only improves the quality of accounting information but also builds and restore the trust of investors on the firm fundamental information. Thus, investors take into account the disclosed information while making the investment decision and thus reduces the cost of capital of a firm. Moreover, conclude that earnings manipulation practices of management generate the negative signal in the capital market. Thus, investors demand extra returns on their investment as compared to non-manipulated firms.