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Three Dimensional Flows of Some Non- Newtonian Fluids With Periodic Suction

Thesis Info

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Author

Shoaib, Muhammad

Program

PhD

Institute

Riphah International University

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Mathemaics

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/7313/1/Muhammad_Shoaib_Maths_HSR_2016_Riphah_international_Univ_23.09.2016.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727609053

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Over the last century lots of efforts have been put in the reduction of profile drag. Boundary layer suction is one of the effective methods to achieve this goal. A laminar boundary layer will be stabilized preventing transition from laminar boundary layer to a turbulent one and yielding larger areas of laminar flow, which generates less drag. In this thesis, mathematical models for incompressible laminar steady flows of three different non-Newtonian models with/without magnetohydrodynamic effect are developed. It is analyzed theoretically and found that much improvement can be achieved by implementing boundary layer suction. Moreover, slip at wall/presence of magnetic field applied normal to main flow velocity further reduces the drag.
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ڈاکٹر شہزاد احمد کی نعتیہ شاعری

ڈاکٹرشہزاد احمد کی نعتیہ شاعری
نعت کی مختصر روایت
عربی میں نعت کے معنی ’’وصف‘‘ کے ہیں لیکن اُردو میں اس کا استعمال حضور اکرم صلی اللہ علیہ و آلہٖ وسلم کی ستائش وثنا کے لیے مخصوص ہے۔(۱)اصطلاح میں ہر وہ نثر پارہ یا منظوم کلام جو رسول کریم صلی اللہ علیہ و آلہٖ وسلم کی مدح میں ہو نعت کہلاتا ہے، نعت گوئی وصف محمود کا دوسرا نام ہے۔ اس بارے میں ڈاکٹر رفیع الدین اشفاق رقم طراز ہیں:
’’نعت کے معنی یوں تو وصف کے ہیں لیکن ہمارے ادب میں اس کا استعمال مجازاً حضرت رسول سیدالمرسلین صلی اللہ علیہ و آلہٖ وسلم کے وصف محمودو ثنا کے لیے ہوا ہے جس کا تعلق دینی احساس اور عقیدت مندی سے ہے۔‘‘(۲)
نعت کا آغاز اللہ رب العزت نے خود کیا اور انبیاء ورُسل کو نبی آخر الزماںصلی اللہ علیہ و آلہٖ وسلم کی آمد کی نوید سنائی۔ پھر قرآن مجید خود رسول کریم صلی اللہ علیہ و آلہٖ وسلم کے اوصاف حمیدہ اور سراپامبارک کے بیان سے مزین ہے۔ یہ سلسلہ قبل ازاسلام سے جاری ہے۔ تبع حمیری جو شاہ یمن تھا، اُس کے اشعار زبان زد عام ہیں ۔ راجا رشید محمود کے مطابق:
’’اولین نعت کی حقیقت یہ ہے کہ ہمارے آقا و مولاصلی اللہ علیہ و آلہٖ وسلم کے اولین نعت گو تبان اسعدبن کلی کرب تھے جنھیں تبع، شاہ یمن کہا جاتا ہے اور وہ حضورصلی اللہ علیہ و آلہٖ وسلم سے کم ازکم سات سو سال پہلے ہوئے ہیں۔‘‘(۳)
بعدازا سلام عرب میں پہلی نعت جناب ابوطالبؓ نے سردارانِ قریش کے سامنے کہی۔ یہ نعت قصیدے کی صنف میں تھی۔ اس کے بعد حضرت حسان بن ثابتؓ، عبداللہ بن رواحہؓ، کعب بن مالک انصاریؓ اور کعب بن زہیرؓ کاروان نعت کے وہ خوش نصیب شعرا ہیں جنھوں نے حیاتِ رسولؐ...

Analysis Strategic of Ticket Purchase at Traveloka in Pangkalan Kerinci City Communities

The study is aimed at determining the influence of Trust, Customer Review, and Customer Rating on Buying Interest. The population of the study is a community of Kerinci Base City and the sampling method used in this study is non-probability sample. Primary and secondary data are used for analysis. The analysis was done with double linear regression and SPSS 25 program. The results of the research show that the Trust, Customer Review, and Customer Rating variables have a significant influence on Buy Interest in part, while the f test shows that the trust, customer review, and customer rating variables simultaneously exert a significant impact on buy interest, with the R square of 0.612. This shows that overall, the Trust variables, customer reviews and customer ratings exert significant influences on Buying Interest.

Learning Technology for Disabled

The hearing impairment is a disability that causes a huge communication gap between hearing impaired handicaps and non-hearing impaired people. A number of daily life complications are faced by profound hearing impaired (PHI) individuals due to their communication inability, for example an adverse event. An adverse event is a maltreatment of a patient caused by deceptive communication by the patient or the misunderstanding by a health practitioner. Its reason is mainly attributed to the inability of health practitioners to understand and express themselves in sign language (SL). Moreover, sign language is not uniform because it mostly includes informal or natural signs that vary from region to region, which makes it difficult to be understandable globally. Cochlear implantation is another solution to facilitate profound hearing impaired to resolve their communication inability. However this solution is very expensive and is not affordable by low socio-economic society. Lip-reading from a speaker’s (i.e., speech therapist) face is another traditional method of teaching spoken language to the hearing impaired. However, the dedication required from a speaker, makes this job burdensome. Pronouncing the same word repeatedly makes the teaching problematic, if not impossible. Subsequently, a child loses engagement and interest in the learning process. Hiring a speech therapist is also a financial overhead associated with the traditional lip-reading method. The objective of the present research is to address the identified problem and the research gap found using systematic literature review (SLR) of the domain, and hence, to facilitate hearing impaired handicaps from low socio-economic society to mitigate their communication gap through lip reading using the proposed software application (learning technology). The proposed interactive software application (LOSINA - Learning Application without Sign Language for Profound Hearing Impaired Children) was developed for iii Preamble Abstract articulating English words following lip-reading method. The LOSINA presents the words in an interactive manner by selecting words containing vowels at different positions, i.e., vowels at initial, middle and final position of the words. The application demonstrates lips and mouth movements to show pronunciations of the words against a selected word. These words involve multiple tongue placements and lip movements. The proposed application implements the constructive pedagogy by enabling a student progress from single tongue placement and lip movement to multiple movements for a word pronunciation. Finally the proposed software application was evaluated for its effectiveness and usability. A preexperimental one-shot study design was used for the effectiveness evaluation involving twenty male and female profound hearing impaired children (i.e., stone deaf). Evaluation was performed by three evaluators: sign language teacher, speech therapist and family members of the individual being experimented. The assessment parameters were designed with the help and consensus of the sign-language teacher and speech therapist to assess the articulation of words by a child and his/her behavior. The articulation of words by the profound hearing impaired children after experimentation is usually comprehensible for an inexperienced or a common listener. Results of the Wilcoxon signed ranked test have shown significant improvement in word articulation by the profound hearing impaired children. The resulted effect size from Wilcoxon signed ranked test has shown a large effect size (0.80) on children’s word articulation through the use of Losina application. The improvement in natural voice quality, fluency and clear audibility of the tested words using LOSINA within short time span and with no formal intervention, can therefore be attributed to a contribution of the present research. Articulation of phrases, sentences, emphasis and emotions in conversation shall be considered as future work of the present research.