Faculty Publications
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Publications by NITK Faculty
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Item Productivity Analysis of Shuttering Works for Sewage Treatment Plant(Springer Science and Business Media Deutschland GmbH, 2021) Pandey, A.; Chaudhary, P.K.; Das, B.B.Formwork is considered as important element of construction projects like in traditional reinforced concrete infrastructure projects. It is labor-intensive work that requires highly skilled workers such as carpenters, bar benders, etc., to execute the work more accurately and efficiently. In view of the fact that it is difficult to find high-skilled workers for formwork process and hence it is important to find the ways or methods of formwork construction that is less labor dependent or in other words methods that are highly productive with minimum number of workers. The quality of formwork exerts a direct influence on the surface of concrete and on its dimensions. Since reinforced concrete work is involved in majority of the buildings, the level of workmanship of the construction project can be identified by seeing the quality of formwork. In order to improve the productivity of the formwork process and its quality then it is necessary to improve its working methodology by identifying the bottlenecks using scientific management. And as we very well know that money is always the center of discussion in our construction projects. To complete the project within its expected, designed cost of the project is one of the major requirements of the project to become a successful project. That’s why the topic ‘Productivity analysis in shuttering for Sewer Treatment Plant Project’ is a great tool to analyze the shortcomings in the present methodology of formwork erection and to mechanize a highly effective model for formwork and this can be achieved by the productivity analysis. © 2021, Springer Nature Singapore Pte Ltd.Item A Detailed Case Study Report on a Section of Four-Lane National Highway Project of Bengaluru-Mangaluru(Springer Science and Business Media Deutschland GmbH, 2024) Srinivas, M.; Sinha, C.; Akshay, K.; Marella, D.A comprehensive study of the project titled “Four-laning of Bengaluru-Mangaluru from km 270 + 270 (Periya Shanthi) to km 318 + 755 (Bantwal)†was conducted to assess the project’s potential, necessities, and requirements. The evaluation also addressed the challenges encountered due to the project’s location in a mountainous terrain region. The major issue encountered and understood through this study was that the project is delayed more than usual due to many difficulties and challenges encountered by them under various circumstances. Based on the survey and research work done, it was understood that the region of Dakshina Kannada where the project is being done has high temperature during summers due to which ice cubes were used to maintain temperature for concrete batching. The objective of the project is to eliminate the hairpin bends which slowed down the traffic movement by straightening them to reduce congestion as there are many pilgrimage places, business hubs, and tourist places in the project vicinity. Some of the main reasons for the delay of the project was unseasonal rainfall, felling of trees, obstructing the Right of Way (ROW), the inability to move the utility units to the project site due to insufficient ROW, landslides, and many more reasons. Currently, the Extension of time (EOT) has been requested by the Contractor to NHAI, as the project has been delayed. This research paper further explores the detailed causes and gives a complete insight into the project. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.Item Dual Frequency Multi-Functional via-Less Leaky Wave Antenna Featuring Enhanced Frequency Sensitivity and Dual Beam Scanning Capability(Institute of Electrical and Electronics Engineers Inc., 2024) Majumder, B.; Vinnakota, S.S.; Goud Rangula, M.; Kandasamy, K.In this paper we present a dual band low cross-polarized periodic microstrip leaky wave antenna (LWA) based on the multi mode resonator concept (MMR). The structure is capable of frequency dependent backward dual-beam steering and fast forward beam scanning in the upper and lower operating band, respectively. A gap loaded microstrip line is used as a host transmission line to feed the combination of the periodic patch radiators on the top and the bottom etched slots leading to the generation of the forward and the backward space harmonics. The etched ring slots at the bottom surface of the structure are not only responsible for steering the beam in the backward direction in the bottom hemisphere in its upper band but also adds radiation diversity in the overall radiation mechanism in its two operating bands. The potential use of this antenna resides in its ability to produce in-plane fast forward beam steering suitable for autonomous vehicle navigation systems in its lower band and out-of-plane backward-symmetric dual beam steering in the upper operating bands, suitable for tracking in relay systems. © 2013 IEEE.Item Energy- and Reliability-Aware Provisioning of Parallelized Service Function Chains With Delay Guarantees(Institute of Electrical and Electronics Engineers Inc., 2024) Chintapalli, V.R.; Killi, B.R.; Partani, R.; Tamma, B.R.; Siva Ram Murthy, C.Network Functions Virtualization (NFV) leverages virtualization and cloud computing technologies to make networks more flexible, manageable, and scalable. Instead of using traditional hardware middleboxes, NFV uses more flexible Virtual Network Functions (VNFs) running on commodity servers. One of the key challenges in NFV is to ensure strict reliability and low latency while also improving energy efficiency. Any software or hardware failures in an NFV environment can disrupt the service provided by a chain of VNFs, known as a Service Function Chain (SFC), resulting in significant data loss, delays, and wasted resources. Due to the sequential nature of SFC, latency increases linearly with the number of VNFs. To address this issue, researchers have proposed parallelized SFC or VNF parallelization, which allows multiple independent VNFs in an SFC to run in parallel. In this work, we propose a method to solve the parallelized SFC deployment problem as an Integer Linear Program (ILP) that minimizes energy consumption while ensuring reliability and delay constraints. Since the problem is NP-hard, we also propose a heuristic scheme named ERASE that determines the placement of VNFs and routes traffic through them in a way that minimizes energy consumption while meeting capacity, reliability, and delay requirements. The effectiveness of ERASE is evaluated through extensive simulations and it is shown to perform better than benchmark schemes in terms of total energy consumption and reliability achieved. © 2017 IEEE.