https://www.granthaalayahpublication.org/ojs-sys/ijoest/issue/feed International Journal of Engineering Science Technologies 2022-11-19T03:45:27+00:00 IJOEST Editorial Notification editor@ijoest.com Open Journal Systems <p>International Journal of Engineering Science Technologies is an open access peer reviewed journal that provides bi-monthly publication of articles in all areas of Engineering, Technologies and Science. It is an international refereed e-journal. IJOEST have the aim to propagate innovative research and eminence in knowledge. IJOEST Journals has become a prominent contributor for the research communities and societies. IJOEST Journal is making the bridge between research and developments.</p> <p>Editor-in-chief:<br>Dr. Mohammad Arif Kamal (Associate Professor, Architecture Section, Aligarh Muslim University, Aligarh - 202002, India)</p> <p>Managing Editor:<br>Dr. Tina Porwal (PhD, Maharani Laxmibai Girls P.G. College, Indore, India)</p> https://www.granthaalayahpublication.org/ojs-sys/ijoest/article/view/399 PERFORMANCE EVALUATION OF BANDWIDTH OPTIMIZATION IN IPV6 HEADER COMPRESSION 2022-09-12T05:20:59+00:00 Isaac Onifade isafade2003@gmail.com Adeniran Oluwaranti iwayemiresearch@gmail.com Ayodeji Iwayemi iwayemiresearch@gmail.com <p>The development of Internet Protocol version 6 (IPv6) came with a larger header size of 40-Byte compared with the 20-Byte of Internet Protocol version 4 (IPv4) which would have made IPv6 protocol a bottleneck in data transmission over the global network. Practically, given the same user data transmitted over the same physical-layer network medium in both IPv4-enabled and IPv6-enabled networks, the network speed would be slower in the IPv6 setup compared to the IPv4 scenario, but network bandwidth is optimized with the in-built header compression technique in IPv6 which makes it advantageous over IPv4 and being deployed in the recent Operating Systems and networking devices including switches and routers. This performance evaluation is focused on the effect of varying header sizes on a packet transmission by determining both maximum packet throughput and header overhead percentage. These metrics were determined after the simulation of the packet transmission in MatLab vR2021a. The results were then validated with a simple ping command in a Peer-to-Peer (P2P) network connection between two Windows 10 Computer Systems using Ethernet Category 6 cable. The output shows that despite the higher header size in IPv6, data transmission using the protocol is at faster rates, and this is due to the inherent header compression feature in IPv6.</p> 2022-11-19T00:00:00+00:00 Copyright (c) 2022 Onifade, Isaac, Oluwaranti, Adeniran, Ayodeji Iwayemi https://www.granthaalayahpublication.org/ojs-sys/ijoest/article/view/408 BACK-TESTING APPROACHES FOR VALIDATING VAR MODELS 2022-10-15T08:36:34+00:00 Kirit Vaniya kiritvaniya2009@gmail.com Ravi Gor ravigor@gujaratuniversity.ac.in <p>Value at risk (VaR) is one of the important market risk measures. It measures the possible potential loss on given investment in terms of value, with certain probability for certain time horizon. In this paper, our aim is to discuss different back-testing approaches to validate VaR models, and also test it the real market data. We back tested VaR of Nifty 50 index obtained by Variance Co-variance method, Historical simulation method, Monte-Carlo simulation, and cubic polynomial regression method. We have used Total exceptions by binary back-testing over entire population. we have also used Basel Traffic Light Zone Test, Kupiec POF-test, Kupiec TUFF-test, and Haas’ Mixed-Kupiec test and analyzed the above methods.</p> 2022-11-23T00:00:00+00:00 Copyright (c) 2022 Kirit Vaniya, Ravi Gor https://www.granthaalayahpublication.org/ojs-sys/ijoest/article/view/419 DESIGN OF LIGHTWEIGHT ELECTRIC VEHICLE AND APPLICATION FOR EFFICIENCY CHALLENGE MARATHON COMPETITION 2022-11-07T06:07:58+00:00 Muharrem Imal muharremimal@ksu.edu.tr Mehmet Ermurat ermurat@ksu.edu.tr <p>Many vehicle manufacturers have started up the development and production of electric vehicles reducing in response to climate change, increasing air pollution and exhaust emission problems. In addition, the most important of the difficult problems associated with electric vehicles is the high cost caused by the use of a large number of batteries and the use of a limited number of batteries negatively affects the driving distance of the car. The limitations caused by the battery problems are not only to increase the cost but also increase vehicle load because it takes up too much space and limits the usage area of the vehicle. In order to address these problems, electric vehicle manufacturers have tried to find a way to reduce the weight of the vehicle body. Therefore, to reduce weight, it would be more accurate to use light metal alloys that could get better results than using polymer composites in this study 6063 series aluminum alloy box and tube profiles were used as chassis materials, and birdcage chassis production was carried out by combining these profiles with MIG welding. After production is completed, the steering system, brake system, suspension system and other moving parts are installed on the chassis. As a result, the final weight of the vehicle was 210 kg and the negativity that may occur was prevented.</p> 2022-11-23T00:00:00+00:00 Copyright (c) 2022 Muharrem Imal, Mehmet Ermurat