http://dspace.ewubd.edu:8080/handle/123456789/1638 2026-04-04T15:18:17Z 2026-04-04T15:18:17Z Islam, Md.Robiul http://dspace.ewubd.edu:8080/handle/123456789/2220 2019-03-13T07:45:04Z 0012-01-01T00:00:00Z

Modern Data Center Design Islam, Md.Robiul The main objectives of this project is to study different criteria and requirements to design a modern data center for any organization .This provide a standard solution to create a Data Center for an organization to consolidate the services, application and it‟s IT infrastructure. A Data Center is a place that centralizes an organization‟s IT operations and equipments, and where it stores, manages it‟s data. Data centers house a network‟s most critical systems and are vital to the continuity of daily operations. The data center network design is based on a proven layered approach, which has been tested and improved over the past several years in some of the largest data center implementations in the world. Throughout the internship I have learned pertinent aspects concerning data center design and its proper maintenance. By dint of this opportunity I have gained the basic foundation of the data center design that seeks to improve scalability, performance, flexibility, resiliency, and maintenance. I believe this experience have enriched by knowledge towards a better future. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh

0012-01-01T00:00:00Z Rahman, Asadur Ahmed, Tanvir http://dspace.ewubd.edu:8080/handle/123456789/2219 2019-03-13T07:45:04Z 0012-01-01T00:00:00Z

Single Axis Smart Solar Tracking System Using Arduino and Servo Motor Rahman, Asadur; Ahmed, Tanvir In this project a single axis solar tracking system has been developed by which more energy from the sun can be harnessed. In this project, an Arduino Uno, which is an Atmel microcontroller-based board, has been used as the main controlling unit. To detect the position of the sun on the sky, two LDRs have been used and to rotate the orientation of the Solar PV panel a servo motor has been used.The sensors and servo motor have properly been interfaced with the Arduino board. The servo motor has been mechanically coupled with the PV panel. The driving program has been written using the Arduino IDE. The whole system has been assembled together and its performance has been tested. This tracker changes the direction of the solar panel based on the direction of the sun facing to the panel successfully. Single axis solar tracker tracks the sun on daily basis and makes the solar panel more efficient. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh

0012-01-01T00:00:00Z Salam, Mohammad Abdus Rifat, Showmik Islam http://dspace.ewubd.edu:8080/handle/123456789/2218 2019-03-13T07:45:04Z 0012-01-01T00:00:00Z

Simulation Study of High Conversion Efficiency of CdS/CIGS Solar Cell Salam, Mohammad Abdus; Rifat, Showmik Islam A high efficiency CIGS/CdS solar cell is designed including an intrinsic CIGS layer and a highly doped CIGS as a Graded p-type layer. The designed cell is simulated using industrial grade software SILVACO. With the combination of TCO layer (ZnO), CdS window layer, CIGS Intrinsic layer, the higher conversion efficiency is achieved which is about 20.94%. After introducing graded p-type layer efficiency increased by great extent. In addition to this, with the increase of thickness of intrinsic layer efficiency also increased. At AM 1.5 solar radiation, the proposed cell structure had a Voc of 0.726V, a Jsc of 57.72mAcm-2, a maximum power is 35.27mW/cm2 and a fill factor of 84%, corresponding to an overall efficiency of 29.69%. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh

0012-01-01T00:00:00Z Lubna, Laila Islam Kheya, Fahmida Nasrin http://dspace.ewubd.edu:8080/handle/123456789/2216 2019-03-13T07:45:04Z 0012-01-01T00:00:00Z

Performance and Implementation of IOT using Transmit Diversity Lubna, Laila Islam; Kheya, Fahmida Nasrin The Internet of Things (IoT) refers to the ever-growing network of physical objects that feature an IP address for internet connectivity, and the communication that occurs between these objects and other Internet-enabled devices and systems. The Internet of Things extends internet connectivity beyond traditional devices like desktop and laptop computers, smartphones and tablets to a diverse range of devices and everyday things that utilize embedded technology to communicate and interact with the external environment, all via the Internet. There are four things form basic building blocks of IoT system –Sensors or Device, Network, Service Support, Applications. Each of these nodes has to have their own characteristics in order to form an useful IoT system. Here we will discuss about Network Layer, which includes GSM/UMTS,LTE, LTE-A, WiFi, Ethernet etc. Wireless Internet and multimedia services have given a limited Spectrum the only way to support high data rates is to develop new spectrally efficient radio communication techniques. It was shown recently that multiple input multiple output (MIMO) system have a potential to significantly increase spectral efficiency in the wireless communications. Space Time codes are practical techniques used to approach the theoretical MIMO spectral efficiencies Unfortunately uplink transmit diversity is not directly applicable to the cellular due to the small size of the mobile station and electromagnetic interaction of antenna elements on the small platform. Furthermore the channels corresponding to different antennas are correlated because of the miniature size of the mobile phone. We survey and simulate the basic designs and diversity results of Network Layer, and summarize its performance. Finally a new idea is suggested for practical implementation using Alamouti Codes & Transmit diversity. This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh

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