OALib Journal期刊

ISSN: 2333-9721




9 ( 1 )

2018 ( 93 )

2017 ( 235 )

2016 ( 269 )


匹配条件: “ Nehad Ali Shah” ,找到相关结果约21805条。
Numerical Simulation of Two-Dimensional Dendritic Growth Using Phase-Field Model  [PDF]
Abdullah Shah, Ali Haider, Said Karim Shah
World Journal of Mechanics (WJM) , 2014, DOI: 10.4236/wjm.2014.45015

In this article, we study the phase-field model of solidification for numerical simulation of dendritic crystal growth that occurs during the casting of metals and alloys. Phase-field model of solidification describes the physics of dendritic growth in any material during the process of under cooling. The numerical procedure in this work is based on finite difference scheme for space and the 4th-order Runge-Kutta method for time discretization. The effect of each physical parameter on the shape and growth of dendritic crystal is studied and visualized in detail.

Tutorial Accounting Fundamentals: A New Look of British and American Accounting System  [PDF]
Nousheen Tariq Bhutta, Syed Zulfiqar Ali Shah
Open Journal of Accounting (OJAcct) , 2013, DOI: 10.4236/ojacct.2013.21004
Abstract: This paper aims to highlight the perception of graduate and undergraduate students regarding accounting fundamentals across British system and American system. The design of this paper is to derive a unique model which proves the both approaches are in same sense however, they are framed differently. Moreover, it provides a good justification of basic questions like why income and expense are treated as credit side and debit side of trading profit and lossaccount, respectively. Ultimately, it helps educators/instructors in influencing the perceptions of their students with regard to different accounting systems.
Corporate Entrepreneurship and Agency Cost: A Theoretical Perspective  [PDF]
Syed Zulfiqar Ali Shah, Nousheen Tariq Bhutta
Open Journal of Accounting (OJAcct) , 2013, DOI: 10.4236/ojacct.2013.23010
Abstract: The study aims to fill the gap in literature by ascertaining the link between corporate entrepreneurship and agency cost. It presents conceptual framework between corporate entrepreneurship and agency cost, on the basis of their theoretical background. Being a prelude endeavour, it provides a keystone for future studies.

Unsteady Incompressible Couette Flow Problem for the Eyring-Powell Model with Porous Walls  [PDF]
Haider Zaman, Murad Ali Shah, Muhammad Ibrahim
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.34041

This work is concerned with the influence of uniform suction or injection on unsteady incompressible Couette flow for the Eyring-Powell model. The resulting unsteady problem for horizontal velocity field is solved by means of homotopy analysis method (HAM). The characteristics of the horizontal velocity field and wall shear stress are analyzed and discussed. Pade approximants and Taylor polynomials are also found for velocity profile and are used to make the maximum error as small as possible. The graphs of the error for the Pade approximation and Taylor approximation are drawn and discussed. Convergence of the series solution is also discussed with the help of h-curve and interval of convergence is also found.

Investors’ Reaction to the Implementation of Corporate Governance Mechanisms  [PDF]
Nousheen Tariq Bhutta, Syed Zulfiqar Ali Shah
Open Journal of Accounting (OJAcct) , 2014, DOI: 10.4236/ojacct.2014.31002
Abstract: The study investigates the impact of corporate governance on investor reaction. This is the first study till date that addresses this gap in literature. The design of the study comprises of corporate governance, investor reaction. Data was taken from 125 non-financial sector of Pakistani companies listed at KSE for the period of 2005-2010. Data was extracted from balance sheet analysis (SBP report), KSE website and annual reports of companies. Correlation (individual and composite) and linear regression tests were applied to validate the outcomes. The results confirm that there is no impact of corporate governance on investor reaction and relationship between them is negative. This implies the inefficiency of financial market where noise trades create sentiment.
Effect of Different Levels of Nitrogen and Phosphorus on the Phenology and Yield of Maize Varieties  [PDF]
Fahad Khan, Sehrish Khan, Shah Fahad, Shah Faisal, Saddam Hussain, Saqib Ali, Ashfaq Ali
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.517272

An experiment was conducted at Malakabad (Gadera) Dargai Malak and KPK to study the effect of different levels of nitrogen and phosphorus on the yield of maize varieties in randomize complete block design with split plot arrangement. Different fertilization treatments (0:0, 100:0, 100:50, 100:100, 150:0, 150:50, 150:100, 150:150 N:P kg·ha-1) were assigned to main plot while, maize varieties (Azam, Jalal and local) were kept in sub-plots. Data regarding emergence m-2, days to emergence, days to tasseling, days to silking, number of cobs plant-1, plant height, grains cob-1, 1000-grain weight and grain yield were recorded. Emergence m-2, days to emergence, days to tasseling, days to silking, plant ha-1 at harvest were not significantly affected by different levels of nitrogen and phosphorus while number of cob plant-1, thousand

The Professional Medical Journal , 2010,
Abstract: To compare the frequency of inflamed appendix in suspected patients of acute appendicitis having Modified AlvaradoScore (MAS) of 7 or more with patients having MAS of 6 or below. Design: Comparative cross sectional study. Place and duration of study:The study was carried out at Surgical Departments of Combined Military Hospital (CMH) and Military Hospital (MH) Rawalpindi from April 2006to April 2007. Material and Methods: This study involved 100 patients who were operated with provisional diagnosis of acute appendicitis.Preoperatively MAS of each patient was calculated and the patients were divided in two groups. Group-I had MAS of 7 or more while Group-IIhad MAS of 6 or below. Postoperatively appendices of all the patients were sent for histopathological examination and its result regardingpresence or absence of acute appendicitis was then compared with MAS of respective group. Results: (a) Group-I:- A total of 72 patients with64(88.9%) positive inflamed appendices on histology. Negative appendicectomy rate 8(11.1%), (b) Group-II:- A total of 28 patients with 8(28.6)positive inflamed appendices. Negative appendicectomy rate 20(71.4%). There is statistical significant difference of positive appendicectomyrate between two groups with (p-value<0.001). Conclusion: Frequency of inflamed appendix is more in patients having MAS of seven orabove. The number of negative appendicectomies can be reduced by using MAS in clinical practice.
Smith Normal Form of Matrices Associated with Differential Posets
Syed Waqar Ali Shah
Mathematics , 2015,
Abstract: We prove a conjecture of Miller and Reiner on the Smith Normal Form of the operator $DU_{n}$ associated with a differential poset under certain conditions. We do so by proving that the conjecture is equivalent to the existence of a certain decomposition of the $ \mathbb{Z}[x]$-module $ (\mathbb{Z}^{p_{n} }, DU_{n}) $, similar to the invariant factor decomposition of $ \mathbb{Q}[x]$-modules. We then use our result to verify the conjecture in certain special cases.
Integrated Effects of Rhizobial Inoculum and Inorganic Fertilizers on Wheat Yield and Yield Components  [PDF]
Muhammad Adnan, Zahir Shah, Asif Khan, Muzamil shah, Gohar Ali Khan, Azaz Ali, Nisar Ali Khan, Nouman Saleem, Shah Nawaz, Saba Akbar, Sonia Samreen, Kanwal Zaib
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.513222

An experiment was conducted in pots under natural condition with two factor factorial completely randomized design (CRD) (CRD) to investigate the integrated effect of rhizobia inoculums and inorganic fertilizers on growth and yield of wheat crop at The University of Agriculture Peshawar, during 2012-2013. The experiment was comprised of four inoculums (no, lentil, peas and chickpeas) and two NPK levels (recommended 120:90:60 kg·ha-1 & 20% less of recommended). It was observed that inoculation of wheat by rhizobia significantly increased tillers per plant by a maximum of 42%, plant height by 13%, grain per spike by 16%, 100 grain weight by 10%, biological and grain yield by 10% over un-inoculated (control) treatment. Among inoculums, peas inoculum was found to be the most efficient for all traits except plant height where chickpea inoculum performed better. Similarly recommended NPK significantly increased tillers per plant by 33%, plant height by 19%, grain per spike by 9%, 100 grain weight by 10%, biological yield by 8% and grain yield by 10% compared with 20% less of recommended NPK. Interactive effect of inoculum x NPK was significant for tillers per plant, grain per spike, grain yield and non-significant for plant height, 100 grain weight and biological yield. However, it was evident from the results that inoculation improved all traits both under recommended and 20% less of recommended NPK. The persistent good performance of peas and lentil rhizobial inoculation in wheat growth exhibited that this could be used as a plant growth promoting rhizobacteria for wheat and other cereal crops in prevailing soil and climatic conditions.

Exact Solutions of a Power Law Fluid Model in Posttreatment Analysis of Wire Coating with Linearly Varying Boundary Temperature  [PDF]
Rehan Ali Shah, Saeed Islam, Abdul Majeed Siddiqui, Tahira Haroon
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.42050

In this paper, analysis of post-treatment of wire coating is presented. Coating material satisfies power law fluid model. Exact solutions for the velocity field, volume flow rate and average velocity are obtained. Moreover, the heat transfer results are presented for different cases of linearly varying on the boundaries. The variations of velocity, volume flow rate, radius of coated wire, shear rate and the force on the total wire are presented graphically and discussed.


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