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An Analysis of Peristaltic Flow of a Micropolar Fluid in a Curved Channel

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Chinese Physics Letters 2011年第1期28卷 138-141页

作者： N. Ali M. sajid T. ,laved Z. Abbas Department of Mathematics International Islamic University Islamabad Paksitan Theoretical Plasma Physics Division PINSTECH P.O. Nilore Islamabad Pakistan

We analyze the two-dimensional peristaltic flow of a micropolar fluid in a curved channel. Long wavelength and low Reynolds number assumptions are used in deriving the governing equations. A shooting method with fourth-order Runge-Kutta algorithm is employed to solve the equations. The influence of dimensionless curvature radius on pumping and trapping phenomena is discussed with the help of graphical results. It is seen that the pressure rise per wavelength in the pumping region increases with an increase in the curvature of the channel. Moreover the symmetry of the trapped bolus destroys in going from strMg＇ht to curved channel.

关键词： Fluid dynamics

Impact of Emotional Intelligence on Employee Performance in Project Management

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Impact of Emotional Intelligence on Employee Performance in ...

作者： Maryum sajid Raja 山东大学

学位级别：硕士

This study examined the impact of emotional intelligence on employee performance in project *** research also investigated the mediating effect of work engagement and moderating effect of project manager’s competence amongst the emotional intelligence and project employee *** was collected from the organizations involved in construction projects,situated in Islamabad and *** the data collection,convenient sampling technique was *** from employees and their supervisors were recorded separately through the distributed *** of 250 distributed questionnaires,220 were *** findings of the research suggest that the work engagement significantly but partially mediates the relationship between emotional intelligence and project employee *** current study also revealed that project manager’s competence moderates the relationship among emotional intelligence and work engagement w-hile partially mediated by work *** study is a significant contribution in the domain of project management suggesting some directions for further research and it has numerous implications at managerial and academic level.

关键词： Chinese companies Project manager'scompetence Work engagement Emotional Intelligence Project employee performance

Estimating the Recreational Value of Kotri Barrage in Sindh,Pakistan

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Estimating the Recreational Value of Kotri Barrage in Sindh,...

作者： Siyal sajid Ali 南京农业大学

学位级别：硕士

本研究以巴基斯坦信德省巴基斯坦旅游景区为案例,于2018年6-7月实地调研,共收集300份问卷,以期通过经济分析增加巴基斯坦景区收入,进一步促进巴基斯坦景区发展。目前,学者已经对景区经济进行了较为充分的分析评估,但大多数倾向关注绿地... 详细信息

本研究以巴基斯坦信德省巴基斯坦旅游景区为案例,于2018年6-7月实地调研,共收集300份问卷,以期通过经济分析增加巴基斯坦景区收入,进一步促进巴基斯坦景区发展。目前,学者已经对景区经济进行了较为充分的分析评估,但大多数倾向关注绿地景区,如对国家历史公园的市场价值评估。同时可以发现,目前学者对信德省的湿地经济价值研究较少。因此,本研究创新性地对巴基斯坦景区进行经济价值评估,进一步丰富了巴基斯坦湿地经济价值的研究,为景区经济研究提供有益补充。本文运用旅行成本模型来衡量巴基斯坦景区的娱乐价值。研究结果表明,巴基斯坦景区的娱乐价值为平均每位游客4029卢比,年度娱乐总价值为846.09百万卢比。当前的消费者剩余为每位游客70卢比,年度总消费者剩余为1470万卢比。同时发现,有多种因素会影响巴基斯坦的年度游客量,例如旅行成本、游客家庭收入以及巴基斯坦景区的质量。巴基斯坦景区质量的提高可能会增加25%的景区收入。因此,本研究建议巴基斯坦景区将门票提高60卢比/每人,用于对巴基斯坦景区的管理,以此方式每年将会产生14亿美元的收入,相当于巴基斯坦环境部门年度分配预算的22%。此外,该研究测算了近90%的游客同意支付额外的入场费,用以改善哥德里拦河坝。75%的游客愿意以60卢比作为进入的费用。因此,如果对60卢比的入场费进行一定改进,则拦河坝的年收入将增加1260万卢比。这笔款项将对信德省政府、野生动植物保护、拦河坝的维护以及拉姆萨尔遗址的保护均有帮助。此外,当询问访问者现场条件是否有所改善时,超过四分之三(225)的受访者表示访问频率会更高。在这种情况下,每位访客的年均旅行次数将从3.5增加到5.5。如果在经济价值的计算中加以利用,则其年度经济价值将呈现更多的增长。

关键词：环境价值旅游成本法总旅游价值科特里拦河坝巴基斯坦

Stretching a Curved Surface in a Viscous Fluid

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Chinese Physics Letters 2010年第2期27卷 149-152页

作者： M. sajid N. Ali T. Javed Z. Abbas Theoretical Plasma Physics Division PINSTECH P.O. Nilore Islamabad 44000 Pakistan Faculty of Basic and Applied Sciences International Islamic University Islamabad 44000 Pakistan

This work is concerned with the viscous flow due to a curved stretching sheet. The similarity solution of the problem is obtained numerically by a shooting method using the Runge-Kutta algorithm. The physical quantities of interest like the fluid velocity and skin friction coefficient are obtained and discussed under the influence of dimensionless curvature. It is evident from the results that dimensionless curvature causes an increase in boundary layer thickness and a decrease in the skin friction coefficient.

关键词： Fluid dynamics Mathematical physics

Proton transport controlled at surface layer of CeO_(2) by gradient-doping with a built-in-field effect

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Journal of Rare Earths 2023年第12期41卷 2025-2032,I0008页

作者： Yuzheng Lu Naveed Mushtaq M.A.K Yousaf Shah sajid Rauf Chen Xia Bin Zhu School of Electronic Engineering Nanjing Xiaozhuang UniversityNanjing21171China School of Physics Electronics and Intelligent ManufacturingHuaihua UniversityHuaihua418008China Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing210096China College of Electronics and Information Engineering Shenzhen UniversityShenzhen58000China Faculty of Physics and Electronic Science Hubei UniversityWuhan430062China

Ceramic fuel cells hold an important position for the sustainable energy future using renewable energy sources with high *** design and synthesis of active materials,interface engineering and having capability of low operating temperature is considered as an important factor to further increase the power output and stability of ceramic fuel cell devices.A novel methodology has vital importance to develop new functionalities of existing materials by introducing new different *** built-in electric field(BIEF) is one of the most recently used approaches to improve charge transfer and ionic conductivity of solid oxide ***,we demonstrate gradient doping strategy in CeO_(2)-δstructure to produce BIEF effect and to modulate the proton transport effectively at the surface layer rather than bulk *** inclusions of La and Sr metal ions at the surface and Co-metal ions into bulk-layer of CeO_(2)form the gradiently doped *** gradient doping into CeO_(2)highly improves the proton transport properties through the surface layer by modifying the energy ***,unbalanced charge distribution due to gradient doping produces built-in electric-field to provide extra driving force for protons transport through surface *** acquired gradiently doped fluorite structure exhibits remarkable proton conductivity of>0.2 S/cm,as a result ceramic fuel cell shows power output of>1000 mW/cm2while operating at 500℃.This unique work highlights the critical role of gradiently doped electrolyte in electrochemical conversion energy devices and offers new understanding and practices for sustainable energy future.

关键词： La_(0.20)Sr_(0.05)Ce_(0.65)Co_(0.1)0_(2-δ)(LSCC) Gradient doping Fast protonic transport High grain boundary conduction Built-in electric field Rare earths

An Animated GIF Steganography Using Variable Block Partition Scheme

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Computer Systems Science & Engineering 2022年第12期43卷 897-914页

作者： Maram Abdullah M.Alyahya Arshiya S.Ansari Mohammad sajid Mohammadi Department of Information Technology College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia Department of Information Technology College of ComputerQassim UniversityBuraydah51452Saudi Arabia

The paper presents a novel Graphics Interchange Format (GIF) Steganography system. The algorithm uses an animated (GIF) file format video to applyon, a secured and variable image partition scheme for data embedding. The secretdata could be any character text, any image, an audio file, or a video file;that isconverted in the form of bits. The proposed method uses a variable partitionscheme structure for data embedding in the (GIF) file format video. The algorithmestimates the capacity of the cover (GIF) image frames to embed data bits. Ourmethod built variable partition blocks in an empty frame separately and incorporate it with randomly selected (GIF) frames. This way the (GIF) frame is dividedinto variable block same as in the empty frame. Then algorithm embeds secretdata on appropriate pixel of the (GIF) frame. Each selected partition block for dataembedding, can store a different number of data bits based on block size. Intruders could never come to know exact position of the secrete data in this stegoframe. All the (GIF) frames are rebuild to make animated stego (GIF) *** performance of the proposed (GIF) algorithm has experimented andevaluated based on different input parameters, like Mean Square Error (MSE)and Peak Signal-to-Noise Ratio (PSNR) values. The results are compared withsome existing methods and found that our method has promising results.

关键词： (GIF)Steganography frame partition variable data insertion data encapsulation

AI-Based Culture Independent Pervasive M-Learning Prototype Using UI Plasticity Design

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Computers, Materials & Continua 2021年第7期68卷 1021-1039页

作者： Mahdi H.Miraz Maaruf Ali Peter S.Excell sajid Khan Xiamen University Malaysia Malaysia Wrexham Glyndwr University UKˆ Epoka University Albania REVE Systems Limited Bangladesh

This paper explains the development of a culturally inclusive ubiquitous M-Learning platform(“Mobile Academy”)with an AI-based adaptive user *** rationale and need for this research and development are justified by the continuing widespread adoption of the Internet and Internet enabled devices,especially *** M-learning platform was designed from the onset for the global *** characteristics and limitations of the application are also *** Mobile Academy,proof of concept prototype,was created to facilitate teaching and learning on the move or in environments where the use of a desktop computer is inconvenient or simply *** platform’s primary objective was cross-cultural usability through the use of a combination of AI and plasticity of user interface design *** usability evaluation plan was comprehensive and the results obtained were studied in *** also included consideration of the results of the SVM(Support Vector Machine)classifiers’performance and cross-device *** AI-based adaptive interface prototype has been tested and evaluated to show its merits and capabilities in terms of its usability,inclusivity and effectiveness of the *** the results,it was concluded that such a culture independent application was also affordable.

关键词： Cross-cultural usability inclusive design mobile learning plasticity of user interface design

Importance of Features Selection,Attributes Selection,Challenges and Future Directions for Medical Imaging Data:A Review

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Computer Modeling in Engineering & Sciences 2020年第10期125卷 315-344页

作者： Nazish Naheed Muhammad Shaheen sajid Ali Khan Mohammed Alawairdhi Muhammad Attique Khan Faculty of Engineering&Information Technology Foundation University IslamabadIslamabadPakistan College of Computing and Informatics Saudi Electronic UniversityRayadhSaudi Arabia Department of Computer Science HITEC UniversityTaxilaPakistan

In the area of pattern recognition and machine learning,features play a key role in *** famous applications of features are medical imaging,image classification,and name a few *** the exponential growth of information investments in medical data repositories and health service provision,medical institutions are collecting large volumes of *** data repositories contain details information essential to support medical diagnostic decisions and also improve patient care *** the other hand,this growth also made it difficult to comprehend and utilize data for various *** results of imaging data can become biased because of extraneous features present in larger *** selection gives a chance to decrease the number of components in such large *** selection techniques,ousting the unimportant features and selecting a subset of components that produces prevalent characterization *** correct decision to find a good attribute produces a precise grouping model,which enhances learning pace and forecast *** paper presents a review of feature selection techniques and attributes selection measures for medical *** review is meant to describe feature selection techniques in a medical domainwith their pros and cons and to signify its application in imaging data and data mining *** review reveals the shortcomings of the existing feature and attributes selection techniques to multi-sourced ***,this review provides the importance of feature selection for correct classification of medical *** the end,critical analysis and future directions are provided.

关键词： Medical imaging imaging data feature selection data mining attribute selection medical challenges future directions

Epidemiologic and socioeconomic factors impacting hepatitis B virus and related hepatocellular carcinoma

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World Journal of Gastroenterology 2022年第29期28卷 3793-3802页

作者： Bipul Gnyawali Antoinette Pusateri Ashley Nickerson sajid Jalil Khalid Mumtaz Department of Medicine Kettering Medical CenterDaytonOH 45342United States Department of Medicine The Ohio State UniversityColumbusOH 43210United States

Chronic Hepatitis B is a highly prevalent disease worldwide and is estimated to cause more than 800000 annual deaths from complications such as cirrhosis and hepatocellular carcinoma(HCC).Although universal hepatitis B vaccination programs may have reduced the incidence and prevalence of chronic hepatitis B and related HCC,the disease still imposes a significant healthcare burden in many endemic regions such as Africa and the Asia-Pacific *** is especially concerning given the global underdiagnosis of hepatitis B and the limited availability of vaccination,screening,and treatment in low-resource *** including male gender,older age,ethnicity,and geographic location as well as low socioeconomic status are more heavily impacted by chronic hepatitis B and related *** to mitigate this impact include increasing screening in high-risk groups according to national guidelines,increasing awareness and health literacy in vulnerable populations,and developing more robust vaccination programs in under-served regions.

关键词： Hepatitis B Epidemiology Hepatocellular carcinoma Socioeconomic status Healthcare disparity Hepatitis B vaccine