565 research outputs found
HERStory Makers 2022: Shirin Ashraf
No full textShirin Ashraf is a postdoctoral research associate at the University of Glasgow studying novel viruses from Uganda and other parts of Africa. She took part in HERStory Makers 2022.What is HERStory Makers?HERStory Makers is a social media competition for female-identifying early career researchers to share their research, their career journeys, and to inspire the next generation. Winners are selected by public vote. HERStory Makers is also part of EXPLORATHON, Scotland's contribution to European Researchers' Night.In 2022-23, EXPLORATHON was supported by the Engineering & Physical Sciences Research Council [grant number EP/X020894/1].Author contributions to contentShirin Ashraf conceived, planned, and recorded the video content. Kirsty Ross edited the video content to insert HERStory Maker credits, add subtitles, and maintain video length below Twitter/X limit of 2 mins and 20 secs, prior to scheduling the social media posts.</p
Positive solutions to second order boundary value problems / Wan Ashraf Wan Azmi
No full textThis thesis is concerned with the existence of positive solutions for second order boundary Value problems. In particular, firstly we investigate the existence and multiplicity of positive solutions for a singular second order scalar Sturm-Liouville boundary value problem with different values of A for a function / involve u. Then, we investigate the existence of positive solutions of a Dirichlet boundary value problem where the function / involve u and v!. Lastly, we consider the results of positive solutions for singular Dirichlet second order boundary value problem where the function / involve u and u' in terms of different values of A. The existence results of positive solutions are proved by applying the Krasnoserskii fixed point theorem on compression and expansion of cones
Positive solutions to second order boundary value problems / Wan Ashraf Wan Azmi
No full textThis thesis is concerned with the existence of positive solutions for second order boundary value problems. In particular, firstly we investigate the existence and multiplicity of positive solutions for a singular second order scalar Sturm-Liouville boundary value problem with different values of A for a function / involve u. Then, we investigate the existence of positive solutions of a Dirichlet boundary value problem where the function / involve u and v!. Lastly, we consider the results of positive solutions for singular Dirichlet second order boundary value problem where the function / involve u and vl in terms of different values of A. The existence results of positive solutions are proved by applying the Krasnosel'skii fixed point theorem on compression and expansion of cones
Coastal morphology impact on the erosion and accretion area using elevation data / Nik Amir Ashraf Nik Azmi
No full textThe dynamical equilibrium of littoral environment that interchanging the phenomena of accretion and erosion of the shoreline is associated to the natural and anthropogenic influences. The Kuala Terengganu coastal area, which consists of human settlements, education institution, tourism attraction and economic development also face the impact of erosion that cause disturbance on the state development growth. This study is conducted to determine the impact of coastal morphology on the erosion and accretion of Kuala Terengganu shoreline using elevation data from the static and real-time kinematic GPS (RTK-GPS) survey methods. The main processing involve the comparison of morphological data between the in situ and archive i.e. temperature, wave height, wind velocity and sedimentation structure, the elevation data from static and RTK method, and the rate of erosion and accretion which was extracted using SPOT-5 satellite data and aerial photograph. It was found that the temperature produced more impact to the coastal changes, compared to other morphological factors. The erosion rate is higher towards the northern part of Terengganu coastal area in 2018 (2072.79 m2) within 5 years, compared to 2014 (721.5 m2). Lastly, the impact of erosion rate causes the variety of coastal elevation along the shoreline, where the higher slope angle occurs at the coastal area which has the highest erosion rate in both 2014 and 2018
IoD swarms collision avoidance via improved particle swarm optimization
No full textDrones flights have been investigated widely. In the presence of high density and complex missions, collision avoidance among swarm of drones and with environment obstacles becomes a challenging task and indispensable. This paper aims to enhance the optimality and rapidity of three dimensional IoD path generation by improving the particle swarm optimization (PSO) algorithm. The improvements include using chaos map logic to initialize the population of PSO. Also, adaptive mutation is utilized to balance local and global search. Then, the inactive particles are replaced by new fresh particles to push the solution toward global optimal. Furthermore, Monte Carlo simulation is carried out and the results are compared with slandered PSO and with recent work CIPSO. The results exhibit significant improvement in convergence speed as well as optimal solution which prove the ability of proposed method to generate safety path for IoD formation without collision with terrain obstacle and among drones.The authors would like to acknowledge the support of the department of the computer engineering at King Fahd University of Petroleum and Minerals for this work.Ahmed, G (corresponding author), King Fahd Univ Petr & Minerals, Comp Engn Dept, Dhahran, Saudi Arabia.
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A socio-legal study on bully among youths in Malaysia / Ashraf Azmi ...[et al.]
No full textStories on bully are becoming a norm in our daily lives. Almost every day, these stories on bully make up the pages of our newspapers. It has been around for as long as we can remember. These days, media has also provided extensive coverage to raise the awareness amongst the public. However, this problem still persists. This will only stagnant their growth, thus not making them capable of achieving their ultimate potential whether in schools or in their adult years. This project paper is conducted with aims to study the existing national schools' policies and its' application, to highlight any law available that governs specifically on the offence of bully and to analyze the application of the various forms of protection provided for children as included in the Child Act 2001 and the Penal Code. This research is based on qualitative methodology where besides referring to books, articles, journals as well as internet. Interviews were also conducted with several officers from various government institutions to gather all the relevant information. Questionnaires were also handed out throughout the course of our research. It is hoped that this project paper will provide a comprehensive discussion on the lacuna and loopholes in the Malaysian Legal System pertaining the issue of bully. Finally, the project paper was ended by conclusions and recommendations that could possibly be taken as effective measures to combat the rampant problem
Automating the determination of wave speed using the pu-loop method
No full textThe PU-loop (pressure-velocity loop) is a method for determining wave speed and relies on the linear relationship between the pressure and velocity in the absence of reflected waves. This linearity of the PU-loop during early systole, which is directly related to wave speed, has always been established by eye. This paper presents a new technique that establishes this linearity and thus determining wave speed online. Pressure and flow were measured in the ascending aorta of 11 anesthetised dogs. The slope of the PU-loop, indicating wave speed was determined by eye and by using the new technique. The difference between the slopes of the two methods is in the order of 3%. The new technique is convenient and allows for the online assessment of wave speed, which could be used as a bedside tool for the assessment of arterial compliance
Keratoconus : current and future state-of-the-art
No full textThis book provides a practical guide to the most recent advances in the diagnostic management of corneal ectasia. Clear, concise chapters address new standardized nomograms of treatment of early progressive ectasia, new epithelium on future crosslinking with and without oxygen supplement, customized protocols, laser assisted corneal regularization protocols and the new femtolaser assisted lamellar corneal transplant. Clinicians and surgeons seeking a go-to guide on the topic of corneal ectasia will find this book to be an essential resource for the latest developments and predicted future trends in the field. © The Editor(s) (if applicable) and The Author(s)
Disleksia bukan halangan raih Bacelor Perakaunan
No full textSERDANG, 9 Jan – Walaupun hanya berupaya menguasai kemahiran 3M - membaca, mengira dan menulis - ketika Darjah 4 tetapi permulaan itu tidak menghalang Amirul Ashraf Mohamad Azmi, 26, dari Sekolah Pengajian Ekonomi (SPE), Universiti Putra Malaysia (UPM) untuk menggenggam ijazah Bacelor Perakaunan dalam Majlis Konvokesyen UPM ke-44, hari ini
Simulation Studies of Low-density Polyethylene Production in a Tubular Reactor
No full textAbstractThis paper deals with the model based of an industrial low-density polyethylene (LDPE) tubular reactor. As the LDPE industry becomes more competitive, manufacturers have to come out with solutions to debottleneck the reactor output while abiding to the stringent product specification. In other words, they have to deal with maximization of the production (maximization of the monomer conversion for a given feed flow rate) and minimization of unwanted product (ethyl, butyl, vinyl and vinylidene groups), while maintaining the polymer product quality with regards to its molecular weight distribution (MWD). To achieve these goals, understanding the effects of operating variables manipulation as well as the dynamic behavior of tubular reactor is essential to develop high performance tubular reactor. In this study, the dynamic model of a tubular reactor for the production of low-density polyethylene (LDPE) is simulated using MATLAB R2015a® in order to predict the temperature profile and monomer conversion percentage along the tubular reactor. The model consists of feed stream, reactor jacket, initiator injector and outlet stream. Several operating variables are involved, notably the feed flow rates, the inlet pressure and temperature with varying parameters to analyze the effect on the reactor productivity. Plots of reactor temperature profile and monomer conversion percentage are presented and from the result, it can be concluded that feed temperature gives significant impact as it effects monomer conversion rate
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