Rishabh Singhal - Academia.edu (original) (raw)

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Papers by Rishabh Singhal

Research paper thumbnail of Reduced order modelling and controller design of different power system models using grey wolf optimizer

Research paper thumbnail of A Novel Heuristic for Estimating Two-Colorability for Conflict-Free Coloring in Simple Graphs

Lecture Notes in Mechanical Engineering, 2021

Research paper thumbnail of Reduced-Order Modelling and Control of a Single-Machine Infinite Bus System with the Grey Wolf Optimizer (GWO)

Research paper thumbnail of Productivity Improvement and Capacity Enhancement of an Automobile Industry: A Case Study

International Journal of Engineering Research and, 2017

Research paper thumbnail of A Hybrid Approach for Model Order Reduction and Controller Design of Large-Scale Power Systems

Research paper thumbnail of A Heuristic Approach for Modelling and Control of an Automatic Voltage Regulator (AVR)

Research paper thumbnail of R2Q: A Risk Quantification Framework to Authorize Requests in Web-based Collaborations

Proceedings of the 2019 ACM Asia Conference on Computer and Communications Security, 2019

Web-based collaboration provides a platform which allows users from different domains to share an... more Web-based collaboration provides a platform which allows users from different domains to share and access information. In such an environment, mitigating threats from insider attacks is challenging, particularly if state-of-the-art token-based access control is used to authorize (permit or deny) requests. This entails the need for an additional layer of authorization based on soft-security factors such as the reputation of the requesters, risks involved in requests, and so on to make the final decision. In this paper, we propose a novel risk quantification framework, called R2QR2QR2Q, which exploits a weighted regression approach to compute the expected threat related to a collaboration request. Our model combines the shared object's sensitivity, access mode of the request, requester's security level and reputation, and maps the expected threat to a risk score using the prospect theory (PT) inspired value functions to actualize decision making under uncertainty of economic outco...

Research paper thumbnail of Factor Graph-based Message Passing Technique for Distributed Resource Allocation in 5G Networks

2019 11th International Conference on Communication Systems & Networks (COMSNETS), 2019

Next generation 5G cellular networks are intended to provide higher data rates, excellent user co... more Next generation 5G cellular networks are intended to provide higher data rates, excellent user coverage, low latency, and low power consumption. Since 5G is expected to have a multitier architecture consisting of macro cells, small cells and Device-to-Device communication altogether but the reported works so far have considered either one of these but not all in resource allocation (RA) in heterogeneous interference model. Moreover, heterogeneous systems using centralized schemes are not scalable with respect to different constraints including interference. We propose a distributed scheme for RA in Orthogonal Frequency Division Multiple Access (OFDMA) based multi-tier cellular network for maximizing the user’s data rate by keeping all kinds of interference constraints into mind. The formulated problem is an NP-hard non-convex non-linear optimization problem. The proposed algorithm solves RA problem through a distributed message passing approach which uses factor graph to model the d...

Research paper thumbnail of Head-Movement Analysis of 360° Affective Experience

2021 IEEE 7th International Conference on Virtual Reality (ICVR), 2021

Research paper thumbnail of Distributed Randomized -Clustering Based PCID Assignment for Ultra-Dense Femtocellular Networks

IEEE Transactions on Parallel and Distributed Systems, 2018

Next-generation wireless networks are going to have highly dense, small cell structure with a lar... more Next-generation wireless networks are going to have highly dense, small cell structure with a large number of femtocells. The dense deployment of the femtocell network architecture is expected to meet the growing data demand by leveraging millimeter-wave structure of 5G wireless networks. However, arbitrary deployment of large number of femtocells underlying a macrocell will pose a challenge for collision and confusion-free Physical Cell ID (PCID) assignments as the total number of available PCIDs is limited to 504. In this paper we propose a distributed, randomized kkk -clustering algorithm for collision and confusion-free PCID assignment problem, which is known to be NP-complete. To reduce the total control message flow, we create overlapping clusters in ultra-dense femtocellular networks, where each cluster head runs the distributed randomized PCID allocation algorithm and locally monitors the conflicts to avoid the collision and confusion constraints. We prove the correctness of our proposed algorithm and analyze its time and message complexity. Through simulation experiments, we also show the effect of different parameters on the PCID allocation objectives.

Research paper thumbnail of The Stability of Adhesive Bonding Between Silicone Rubber and Alumina for Neural Prostheses

The Journal of Adhesion, 1983

Thermodynamic considerations using surface tension data involving model compounds show that the a... more Thermodynamic considerations using surface tension data involving model compounds show that the adhesive bond between a silicone rubber and an alumina substrate is not stable in the presence of water if only dispersion forces are effective. The observed stability is due to chemical links which form before the rubber crosslinks thus removing reactivity.

Research paper thumbnail of Reduced order modelling and controller design of different power system models using grey wolf optimizer

Research paper thumbnail of A Novel Heuristic for Estimating Two-Colorability for Conflict-Free Coloring in Simple Graphs

Lecture Notes in Mechanical Engineering, 2021

Research paper thumbnail of Reduced-Order Modelling and Control of a Single-Machine Infinite Bus System with the Grey Wolf Optimizer (GWO)

Research paper thumbnail of Productivity Improvement and Capacity Enhancement of an Automobile Industry: A Case Study

International Journal of Engineering Research and, 2017

Research paper thumbnail of A Hybrid Approach for Model Order Reduction and Controller Design of Large-Scale Power Systems

Research paper thumbnail of A Heuristic Approach for Modelling and Control of an Automatic Voltage Regulator (AVR)

Research paper thumbnail of R2Q: A Risk Quantification Framework to Authorize Requests in Web-based Collaborations

Proceedings of the 2019 ACM Asia Conference on Computer and Communications Security, 2019

Web-based collaboration provides a platform which allows users from different domains to share an... more Web-based collaboration provides a platform which allows users from different domains to share and access information. In such an environment, mitigating threats from insider attacks is challenging, particularly if state-of-the-art token-based access control is used to authorize (permit or deny) requests. This entails the need for an additional layer of authorization based on soft-security factors such as the reputation of the requesters, risks involved in requests, and so on to make the final decision. In this paper, we propose a novel risk quantification framework, called R2QR2QR2Q, which exploits a weighted regression approach to compute the expected threat related to a collaboration request. Our model combines the shared object's sensitivity, access mode of the request, requester's security level and reputation, and maps the expected threat to a risk score using the prospect theory (PT) inspired value functions to actualize decision making under uncertainty of economic outco...

Research paper thumbnail of Factor Graph-based Message Passing Technique for Distributed Resource Allocation in 5G Networks

2019 11th International Conference on Communication Systems & Networks (COMSNETS), 2019

Next generation 5G cellular networks are intended to provide higher data rates, excellent user co... more Next generation 5G cellular networks are intended to provide higher data rates, excellent user coverage, low latency, and low power consumption. Since 5G is expected to have a multitier architecture consisting of macro cells, small cells and Device-to-Device communication altogether but the reported works so far have considered either one of these but not all in resource allocation (RA) in heterogeneous interference model. Moreover, heterogeneous systems using centralized schemes are not scalable with respect to different constraints including interference. We propose a distributed scheme for RA in Orthogonal Frequency Division Multiple Access (OFDMA) based multi-tier cellular network for maximizing the user’s data rate by keeping all kinds of interference constraints into mind. The formulated problem is an NP-hard non-convex non-linear optimization problem. The proposed algorithm solves RA problem through a distributed message passing approach which uses factor graph to model the d...

Research paper thumbnail of Head-Movement Analysis of 360° Affective Experience

2021 IEEE 7th International Conference on Virtual Reality (ICVR), 2021

Research paper thumbnail of Distributed Randomized -Clustering Based PCID Assignment for Ultra-Dense Femtocellular Networks

IEEE Transactions on Parallel and Distributed Systems, 2018

Next-generation wireless networks are going to have highly dense, small cell structure with a lar... more Next-generation wireless networks are going to have highly dense, small cell structure with a large number of femtocells. The dense deployment of the femtocell network architecture is expected to meet the growing data demand by leveraging millimeter-wave structure of 5G wireless networks. However, arbitrary deployment of large number of femtocells underlying a macrocell will pose a challenge for collision and confusion-free Physical Cell ID (PCID) assignments as the total number of available PCIDs is limited to 504. In this paper we propose a distributed, randomized kkk -clustering algorithm for collision and confusion-free PCID assignment problem, which is known to be NP-complete. To reduce the total control message flow, we create overlapping clusters in ultra-dense femtocellular networks, where each cluster head runs the distributed randomized PCID allocation algorithm and locally monitors the conflicts to avoid the collision and confusion constraints. We prove the correctness of our proposed algorithm and analyze its time and message complexity. Through simulation experiments, we also show the effect of different parameters on the PCID allocation objectives.

Research paper thumbnail of The Stability of Adhesive Bonding Between Silicone Rubber and Alumina for Neural Prostheses

The Journal of Adhesion, 1983

Thermodynamic considerations using surface tension data involving model compounds show that the a... more Thermodynamic considerations using surface tension data involving model compounds show that the adhesive bond between a silicone rubber and an alumina substrate is not stable in the presence of water if only dispersion forces are effective. The observed stability is due to chemical links which form before the rubber crosslinks thus removing reactivity.