508 research outputs found
Transverse Magnetic Field Effect on Extracellular Fluid Flow along with a Semi-Infinite Vertical Rotating Porous Plate
No full text
Ion-Slip Effects on Bingham Fluid Flowing Through an Oscillatory Porous Plate with Suction
No full textThis paper investigates the remarkable effects for introducing the Ion-slip characteristics in the magnetohydrodynamic phenomena on the drift of Bingham fluid when flowing through the inner territory of two porous parallel plates in correspondence with the suction case. The lower plate (L-plate) is as steady while the upper one (U-plate) is oscillatory, which oscillates in its own plane at time t>0. A magnetic field, which is uniform, is affixed perpendicular to the plates. The U-plate temperature oscillates while the L-plate temperature is constant. Numerical performance is presented by the MATLAB R2015a simulation tool with the explicit Finite difference Method (FDM) algorithm. To ensure the preciseness and convergence of the solutions, careful attention has been given on the criteria of stability and convergence of the FDM schemes. As an outcome, the converged solution is obtained for Pr ≥ 0.066, βi ≥ 2, Ha ≤ 20, h ≤ 8, S ≥ −10 and Re ≤ −0.017 with the arbitrary choice of βe = 0.10 and Ec = 0.01. The mesh sensibility test gives the competent mesh space at (m,n)=(60,60). The time sensibility test ensures that the solutions at dimensionless time, τ=2.0 will be steady-state. The exactitude of the current study is obtained by comparing with the published results. Finally, the physical influences of several governing parameters, including Ionslip on the fluid property like velocity, local shear stress, temperature and Nusselt number are discussed and decorated graphically
A Sustainable Campus for Higher Education Institutions in the US
No full textThe green and sustainable campus as a concept is not something new to the US However, well organized and coherent activities to effectively "green" campues are not that common, and efforts are minor in comparison tothe potential of these universities (green and tompson, 2005)This poster was presented by Alam, Md Imtiajul A Sustainable Campus for Higher Education Institutions in the US. at the 5th Graduate and Professional Student Research Conference April 11, 2018, Memorial Union, Iowa State University, Ames, Iowa. Posted with permission
A TDMA based EM controlled multi-channel MAC protocol for underwater sensor networks
No full textSuccessful wireless communications in underwater with high throughput possess a great challenge still today. Due to the unique environment in underwater, medium access protocols (MAC) for terrestrial networks are not suitable for such environment. High attenuation of electromagnetic (EM) wave in water makes acoustic wave a more appropriate choice for communication in underwater. However, the low available bandwidth, high propagation delays and spatial-Temporal uncertainty of the nodes make the MAC protocols with acoustic channel a vast area for research. In this paper, we propose a novel multi-channel MAC protocol for underwater sensor networks (UWSNs) employing both acoustic and EM waves. The proposed MAC protocol has a single EM based control channel which is used for managing the node data transmission times and confirmation messages. On the other hand, multiple acoustic channels are used as the data communication channels. In the proposed protocol, time division multiple access (TDMA) technique is used for control channel to prevent any collision between control signals of the nodes. Because of the nature of zero collision in the control channel, the whole MAC scheme remains in a collision-less state. Extensive simulations are carried out for evaluating the performance of the proposed MAC protocol demonstrating its validity.</p
Automated parking lot management for Bengali license plates using hough transformation and image segmentation
No full textThis thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Computer Science and Engineering, 2014.Cataloged from PDF version of thesis report.Includes bibliographical references (page 54 -56).This paper is on automated parking lot management system for Bengali language based on vehicle number plate recognition. The need for an efficient parking system stems from increased congestion, motor vehicle pollution. The aim of this research is to develop and implement an automatic parking system that will increase convenience and security of the parking lot with minimum human involvement. This is done with the combination of automated license plate recognition and database manipulation. The image is acquired from a live video feed by comparing frames for significant changes. Then it is passed through several steps including some different types of algorithms and methodologies such as Canny Edge Detection, Connected Component Labeling and Hough Transformation to localize the license plate. Subsequently the license plate is progressed through Character Segmentation and Pattern Recognition to extract the data for manipulating and computing using database to manage the parking lot system efficiently. The system was experimented on 20 different license plates and the algorithms worked correctly in all cases with a very good response time.Abul Ahsan Mahmud,
Bishal Peter Dores,
Nahid Ul IslamB. Computer Science and Engineerin
The impact of national culture on the organizational culture: Multinational companies doing businesses in developing countries
No full textAbstract Title: The impact of national culture on the organizational culture: Multinational companies doing businesses in developing countries Level: Final assignment for Master Degree in Business Administration (MBA) Author: Md. Mahbub Alam Supervisor: Dr. Ehsanul Huda Chowdhury Examiner: Dr. Maria Fregidou-Malama Day: 2017- May Aim: The aim of the study is to understand how national culture of Bangladesh is affecting the organizational culture of the multinational firms operating in Bangladesh. To understand the issue, Hofstede’s Cultural Dimensions are regarded as benchmark for analysis. Method: Qualitative study has been conducted whereby both primary and secondary data are used. Hereby, primary data have been gathered from ten employees of Grameen Phone a multinational working in Bangladesh. To collect data, face to face interviews has been conducted using Skype. Results & Conclusions: Finding of the study is the MNCs integration with national culture with the view to sustainable business operation. It has been demonstrated that national culture affects the organizational culture in the form of employee participation, collective working environment, collaborative work efforts, and knowledge sharing through continuous communication. Suggestions for future research: Further investigations on national culture’s impact on organizational culture can be undertaken by making a comparison between MNC and a purely local firm. Additionally, an analysis on a large number of MNCs operating in host country can add value for further researches. Contribution of the thesis: To the theoretical model, this study makes contribution on the ground of understanding how MNC adapt their business with local culture where cultural sensitiveness is high. Managerial implications: MNCs can ensure collaboration, support, and teamwork among employees as part of their attempt to integrate with local culture. This study reveals that local employees can be used as means of cultural carriers by managers which can promptly address the cultural differences to be mitigated. Keywords: Multi-national Corporations (MNCs), National Culture, Organizational Culture, Uncertainty Avoidance, Individualism vs. Collectivism, Power Distance
Parameter sensitivity and qualitative analysis of dynamics of ovarian tumor growth model with treatment strategy
No full textIn this paper, we are interested to find the most sensitive parameter, local and global stability of ovarian tumor growth model. For sensitivity analysis, we use Latin Hypercube Sampling (LHS) method to generate sample points and Partial Rank Correlation Coefficient (PRCC) method, uses those sample points to find out which parameters are important for the model. Based on our findings, we suggest some treatment strategies. We investigate the sensitivity of the parameters for tumor volume, y, cell nutrient density, Q and maximum tumor size, ymax. We also use Scatter Plot method using LHS samples to show the consistency of the results obtained by using PRCC. Moreover, we discuss the qualitative analysis of ovarian tumor growth model investigating the local and global stability
- …
