Chittagong University of Engineering & Technology

About: Chittagong University of Engineering & Technology is a education organization based out in Chittagong, Bangladesh. It is known for research contribution in the topics: Computer science & Renewable energy. The organization has 1200 authors who have published 1444 publications receiving 10418 citations. The organization is also known as: Engineering College, Chittagong & Bangladesh Institute of Technology, Chittagong.

Electron impact ionization of metastable 2P-state hydrogen atoms in the coplanar geometry

Abstract: Triple differential cross sections (TDCS) for the ionization of metastable 2P-state hydrogen atoms by electrons are calculated for various kinematic conditions in the asymmetric coplanar geometry. In this calculation, the final state is described by a multiple-scattering theory for ionization of hydrogen atoms by electrons. Results show qualitative agreement with the available experimental data and those of other theoretical computational results for ionization of hydrogen atoms from ground state, and our first Born results. There is no available other theoretical results and experimental data for ionization of hydrogen atoms from the 2P state. The present study offers a wide scope for the experimental study for ionization of hydrogen atoms from the metastable 2P state.

A smartphone-based wander management system for Bangla speaking patients with Alzheimer’s disease

Abstract: Wandering (disorientation) is considered the most hazardous behavior of Alzheimer’s patients (AD patient). This paper presents a smartphone based solution for real-time-outdoor wander detection and management for AD patients. The existing techniques mostly used location tracking system for wander detection whereas the proposed technique uses a unique voice-based feature for this purpose. The proposed system continuously monitors the conversation of AD patient with any other person and analyzes it. Whenever the system finds any predefined keyword in the conversation, it decides about wander occurrence. After detecting the wandering state, the proposed system creates an alert message with the location information of the user (AD patient) and sends to the caregiver. This application is developed for the Bengali-speaking population of the world and uses Bangla as the system language. However, it can be modified for any other language of the world. This application also offers a feature of real-time location tracking. Whenever necessary, caregiver can check the current position of the patient. The wander-detection accuracy of the proposed system has been evaluated. High sensitivity (92.86%) supports that the proposed system will be a helpful tool for AD patients to lead a secured life.

Optimizing Complexity of Quick Sort

Abstract: Quick Sort is considered as the fastest sorting algorithm among all the sorting algorithms. The idea of selecting a pivot was introduced in classical Quick Sort in 1962. This sorting algorithm takes favorably less time compared to other methods. It needs a complex time O(\( nlogn \)) for the best case and O(\( n^{2} \)) for worst-case which occurs when the input array is already sorted or reversely sorted. To reduce the worst-case complexity we provide a strong algorithm where it makes fewer comparisons and the time complexity after using this algorithm becomes a function of logarithm O(\( nlogn \)) for worst-case complexity. We experimentally evaluate our algorithms and compare them with classical algorithms and with other papers. The algorithm presented here has profound implications for future studies of handling worst-case complexity and may one day help to solve this occurrence of the fastest sorting method.

Analyze the Impact of Demand Side Management on Grid Power for an Isolate Zone in a Sustainable IEEE 14 Bus System

Abstract: Power Grid is a complex network system for power transmission, generation and distribution which is rapidly changing with time as per user requirement. Computational analyze and representation is a prime requirement to find out the impact of Demand Side Management(DSM) within a network. For the sustainability of the new grid system, it is essential to modify the load requirement for the system model and analyze the system performance for the sustainability of the network. In this paper, the IEEE 14 bus system load model is modified for DSM in a local grid network and the impact of the grid system is analyzed by MATLAB/Simulink software model for different network condition.