257 research outputs found
Thermoplastic Transverse Bar as Speed Reducer / Muhammad Akram Adnan
No full textThis paper summarizes a research project that evaluates the performance of traffic marking material
made from thermoplastic, which is used as transverse bar. Transverse bar is designed to alert drivers
by inducing vibration and noise as the vehicle crosses the devices which eventually will 'self enforcement'
the drivers to decrease their speed. The study was conducted in two main stages; first data
collection from field survey followed by data analysis. Detailed speed measurements recorded before
and after the markings were laid at the sites. A total of one hundred and fifty speed measurements
were recorded at the site using a radar gun. The results showed a large initial reduction in traffic speed
after one week of installation of the device. However one year later the traffic speeds recorded showed
that the speed resume back to normal although not completely. The effect of driving over these markings
is quite unique, "the faster a driver passes through the device, the less uncomfortable they become".
This can be seen from the speed profile after one year of installation where drivers tend to
increase speed while crossing the device. Probably, some drivers who are aware of the device can
explain this phenomenon. Other factors such as traffic volume and composition may also affect the
effectiveness of this device; through visual observation, impact on lorry and trucks is not effective.
However, significant reduction in speed by approximately 12% is observed when the performance of
the thermoplastic is in good condition
Factors that influence stock price of logistics companies in Malaysia / Muhammad 'Arif Akram Adnan
No full textThe aims of this research are to study the effect and correlation between the selected variables and stock price using annual data from 2011 to 2020, which is ten years involved. There is one dependent variable which is stock price of the selected logistics companies listed in Bursa Malaysia and four (4) independent variables which are inflation rate (INF), interest rate (INT), return on assets (ROA) and return on equities (ROE). Ordinary least squares (OLS) have been used to estimate the unknown parameters in a linear regression model. The result is analysed by using the panel series data regression analysis model
Supervised Learning Approach for Intrusion Detection in Unbalanced Network Traffic
No full textIntrusion detection systems (IDS) serve as critical sentinels in network security, assuming a paramount role in identifying and mitigating potential threats. With the evolution of our digital landscape, robust and productive intrusion detection mechanisms have become increasingly imperative. The significance of IDS lies in their ability to safeguard network resources’ integrity, confidentiality, and availability. In an era where cyber threats constantly evolve in complexity and scale, IDS serves as the front line of defence, tirelessly monitoring network traffic to pinpoint suspicious activities and mitigate potential security breaches. To address the class imbalance problem, the Synthetic Minority Over-sampling Technique (SMOTE) was applied to pre-process the CIC-IDS 2017 and NSL-KDD 2009 datasets. Advanced machine learning technique is harnessed to enhance IDS capabilities, specifically through utilising Support Vector Machines (SVM) for subsequent classification tasks. The experimental outcomes on both datasets unveil exceptional accuracy of 99% and performance across multiple intrusion types, underscoring the effectiveness of our SVM-based approach in strengthening IDS
sj-docx-2-npx-10.1177_1934578X211031148 - Supplemental material for Antileishmanial Potential of Berberine Alkaloids From <i>Berberis glaucocarpa</i> Roots: Molecular Docking Suggests Relevant <i>Leishmania</i> Protein Targets
No full textSupplemental material, sj-docx-2-npx-10.1177_1934578X211031148 for Antileishmanial Potential of Berberine Alkaloids From Berberis glaucocarpa Roots: Molecular Docking Suggests Relevant Leishmania Protein Targets by Muhammad Alamzeb, Saqib Ali, Mamoon-Ur-Rashid, Behramand Khan, Ihsanullah, Adnan, Muhammad Omer, Asad Ullah, Javed Ali, William N. Setzer, Syed M. Salman, Ajmal Khan and Akram Shah in Natural Product Communications</p
sj-docx-1-npx-10.1177_1934578X211031148 - Supplemental material for Antileishmanial Potential of Berberine Alkaloids From <i>Berberis glaucocarpa</i> Roots: Molecular Docking Suggests Relevant <i>Leishmania</i> Protein Targets
No full textSupplemental material, sj-docx-1-npx-10.1177_1934578X211031148 for Antileishmanial Potential of Berberine Alkaloids From Berberis glaucocarpa Roots: Molecular Docking Suggests Relevant Leishmania Protein Targets by Muhammad Alamzeb, Saqib Ali, Mamoon-Ur-Rashid, Behramand Khan, Ihsanullah, Adnan, Muhammad Omer, Asad Ullah, Javed Ali, William N. Setzer, Syed M. Salman, Ajmal Khan and Akram Shah in Natural Product Communications</p
Exploration of safety performance and traffic behaviour on Selangor-Kuala Lumpur urban expressway at merging section / Muhammad Akram Adnan … [et al.]
No full textAs defined in the Highway Capacity Manual (HCM 2000), an expressway is a divided highway with full control of access and with two or more lanes for each direction. The two directions of the expressway must be completely separated along its entire length. Accesses to expressways are only allowed at entrance ramp and expressways vehicles exit through off- ramp. From the view point of a highway and traffic engineer, there are two types of ramp. On ramp or entrance ramp, by which drivers can enter the expressway and off-ramp or exit ramp by which drivers can leave the expressway. This research explores the safety issues during the maneuverability during merging and diverging operation. During the process of merging, ramp vehicles need to adjust their speed and gaps in order to enter mainline safely. Expressway areas at entrance and exit ramps are characterized by concentrated turbulence to the traffic stream on the mainline due to intensive vehicular interaction. Therefore, these areas, which include ramp merge, diverge and weaving section are viewed as potential bottlenecks in expressway operations. Acceleration and deceleration lanes are designed as safety facilities allowing ramp vehicles to make a smooth merge without causing interference to expressway streams. A well designed acceleration lane should permit drivers to perform a safe merge as well as deceleration lane for smooth diverging process. The knowledge of operational performance at these critical areas is importance to various transportation applications including planning, design, operation and management. At present, there are no adequate procedures that can be used to consider the impacts of traffic conditions or geometric features on expressway traffic performance and safety based on Malaysian expressway conditions. Due to the lack of guidance in the current practice, this research attempts to describe an overview understanding and set up the basis of expressway operational performance and safety behaviors at these critical areas for practical consideration for Malaysian practice. A model have been developed for ramp merging process and systematic methodology to evaluate the safety operational performance had been proposed for Malaysian driving style
Terahertz (THz) application in food contamination detection
No full textThis chapter mainly focuses on various sensing technologies that have been employed to detect food and water contamination. It has been found that these conventional sensing technologies appear to be unfeasible and impractical to meet with the challenging growth of population. In this aspect, THz sensing is discussed in detail and deemed to be more effective due to its strong penetration feature, high resolution, and sensitivity to monitor the molecular changes in fruits. This chapter also introduces a novel technique of fruits contamination detection by monitoring MC and observe the transmission and path loss response of fruits. It also investigates an important parameter such as the absorption coefficient and shows some significant results and correlation of MC with transmission response and absorption coefficient. Upon close analysis, these results give meaningful information about the composites present in fruits such as carbohydrates and proteins. Toward the end, this chapter emphasizes on the advancement and development of terahertz technology applications and found that the THz sensing is a promising candidate and has a potential to change a paradigm in the plant science sector
Design of road humps in residential area
No full textSpeed hump is one of the traffic calming devices that has been installed in residential area in Malaysia. This study was to find a better design of speed hump in reducing speed of vehicles. Data were collected using Speed Radar Meter Detector Two sets of data were collected. They were speed before reaching the hump (at 30m before the device, this is due to safe stopping sight distance) and speed over the hump for both motorcycles and cars. Data were collected in one hour or at least 50 vehicles at three locations. The effectiveness of the humps is measured by comparing the reduction in speed at the hump. The effectiveness of the speed hump also influenced by other parameters such as height and width of it
Soil improvement technique using waste materials for soft soil foundation / Anas Ibrahim, Muhammad Akram Adnan and Ir. Dr. Abd. Naser Abd. Ghani
No full textMost development projects currently have to face the limitation of exceptional construction sites, particularly due to fast growing of human population and economic development. At the same time, the abundance of waste tyres being dumped in landfill is one of major problems regularly faced in management of solid wastes. Being almost non-biodegradable, these waste materials need approximately hundred years to decompose; thereby, recycling ability is of golden opportunity to engineers. Recent technologies utilizing waste materials fortunately allow improvement of problematic sites in meeting design requirement while stressing on environmental and sustainable development. Study focused on the determination of physical and engineering properties of stabilized cohesive frictional soils using shredded scrap tires. Standard tests according to British Standard BS 1377 were performed on untreated river sand and cohesive frictional soil, 100% shredded tire and mixtures of the soil and shredded tire by ratios of 90%-10%, 70%-30%, 50%-50%, 30%-70% and 10%-90%. Results show that mixtures of soil-tyres by ratio of 70%-30% give highest improvement in term of shear strength parameters with 23% improvement of internal friction angle compared to the untreated cohesive frictional soil with 31° of internal friction angle. Mixtures of 70%- 30% produced the best lightweight mixtures with internal friction angle value was 38° and the maximum dry density was 44% lower compared to the untreated soils respectively. The mixture is indeed found to possess desired material characteristics for construction, i.e. strength, high permeability and lightweight. Overall results showed that utilization of shredded waste tyres as construction materials could improve the reinforced soil stability, hence reducing structural settlement
Synthesis and characterization of efficient Sr-doped ZnO nanostructures for optoelectronic, and photocatalytic applications
No full textAvailable online 15 February 2024With increasing technological advancements, optoelectronics emergence is inevitable. Various metal oxides are explored for optoelectronics properties and Zinc oxide-based nanostructures have various advantages that can be explored in optoelectronic devices. Nanomaterials that are undoped and Strontium doped were synthesized via a simple wet chemistry route. The study set out to quantify the impact of Strontium doping in Zinc Oxide on optical and photocatalytic properties. The doping of strontium concentration within ZnO varied from 0 % to 3 % by weight of the total molar ratio. The characterization of SZO nanomaterials was done using measurements of Xray diffraction, Raman Spectroscopy, SEM, Hall effect measurements, UV/Vis, and PL regarding their structural properties, morphological properties, optical properties, and electrical characteristics. X-ray diffraction analysis showed that the Sr-doped ZnO had the hexagonal wurtzite structure of zinc oxide. SEM showed that the morphology of Sr-doped ZnO thin films changed by increasing Sr concentration. Meanwhile, the film’s surface was smooth and crack-free. In UV–Vis experiments, the concentration of Sr doping reduced the optical band gap ranges from 3.27 eV to 2.98 eV. All the samples exhibited n-type conductivity in the Hall Effect. Photocatalytic degradation Methylene Blue was studied and SZO (3 at. %) was best for degradation with efficiency over 80 %.Alqa Saeeda Javaid, Wajeeha Saeeda Javaid, Muhammad Adnan, Muhammad Usman, Muhammad Aftab Akram, Najma Bashir, Awais Khalid, Pervaiz Ahmad, Mousa M. Hossin, Iram Liaqat, Mohamed A. Ismail, Hanna Dib, Natasha Arsha
- …
