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检索条件"机构=Centre For Development of Advanced Computing"

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Securing the IoT Device Network with Lightweight Cryptography

Securing the IoT Device Network with Lightweight Cryptograph...

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International Symposium on Wireless Personal Multimedia Communications (WPMC)

作者： Suryansh Dhakare Shrikrishna S Chippalkatti Mohammed Misbahuddin Centre for Development of Advanced Computing (C-DAC) Bengaluru Karnataka India

ISBN: (数字)9798350392319

ISBN: (纸本)9798350356137

Cryptography algorithms play an essential role in technology for protecting against the many threats seen in the digital world. Many research techniques have been conducted to tackle IoT device security. Traditional techniques are typically identified by their high-level computational complexity of cryptographic algorithms. On the other hand, lightweight algorithms solve most security challenges when using standard Cryptographic techniques in constrained devices. This paper discusses lightweight cryptographic techniques for Internet of Things (IoT) devices and provides a complete overview of the security mechanisms ranging from lightweight cryptographic solutions to IoT devices, analyzing implementation of embedded software and hardware technologies, as well as contemporary methods for IoT device security. advanced Encryption Standard (AES) and Speck cryptographic algorithms implementation on IoT devices are discussed thoroughly for providing device security. Results validate that AES and SPECK are consuming less memory compared to traditional algorithms in resource constrained environment.

关键词： Wireless communication Hands Software algorithms Memory management Hardware Encryption Cryptography Internet of Things Multimedia communication Standards

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Deep Learning Video Analytics Solutions for Ocean Surveillance Systems 14

Deep Learning Video Analytics Solutions for Ocean Surveillan...

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14th International Conference on Digital Image Processing, ICDIP 2022

作者： Harikrishnan, V.S. Dixit, Shivam Pal Amutha, K. Kamnani, Jitesh Ramasundaram, S. Venkatesan, R. Centre for Development of Advanced Computing Chennai India National Institute of Ocean Technology Chennai India

ISBN: (纸本)9781510657564

Moored data buoys are floating platforms at sea. These buoys serve as in-situ Weather, Ocean and Tsunami observatories. These buoys transmit real-time data through 3G/GSM/GPRS and satellite telemetry. Damage to the buoy systems by humans, boats, ships etc., intentional or otherwise, causes loss of data, and inhibits early warning systems. It also has financial implications due to the loss of the instruments, repair & reinstallation charges, and the time a ship spends to fix the buoy. Challenges arise while analyzing the video footage as they are unstable and shaky, due to the continuous movements of floating ocean buoy platforms caused by the state of the sea. This paper explores object detection algorithms for detecting eight different objects commonly found in the camera video footage transmitted by the buoy platforms at sea. The object detection training implementation gave us a best accuracy of 0.867MAP@0.5IOU. The object detection will help in solutions like Object Search, detection of floating marine plastic debris, understanding the direction of motion of ships, boats etc. In a broader perspective, it can help in Surveillance, Market Survey and Fish Detection in underwater cameras for fish abundance study. © 2022 SPIE.

关键词： Ships

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A Novel Methodology for Dynamic Thresholding Technique under Varying Illumination Conditions

A Novel Methodology for Dynamic Thresholding Technique under...

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International Conference on Computers and Devices for Communication (CODEC)

作者： Gopinath Bej Abhra Pal Tamal Dey Amitava Akuli Alokesh Ghosh Centre for Development of Advanced Computing Kolkata India

This research introduces a new dynamic thresholding method, designed for changing illumination conditions in image processing. Traditional fixed thresholds struggle with varying light due to factors like voltage changes, LED aging, etc. The proposed technique adapts thresholds using background image intensity as a reference, employing a supervised approach with polynomial curve fitting via Python's numpy library. This innovative dynamic thresholding, combining supervised learning, enhances object detection and segmentation in machine vision systems, aiding tasks like foreign matter removal in tea, grain quality monitoring, etc.

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A Holistic Optimisation - Success Mantra for HPC Performance

A Holistic Optimisation - Success Mantra for HPC Performance

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IEEE Conference on High Performance Extreme computing (HPEC)

作者： Ashish Bisht Deepika H. V Haribabu P S A Kumar S D Sudarsan Centre for Development of Advanced Computing Bengaluru India

High Performance computing (HPC) aids in solving numerous complex scientific problems such as weather forecasting, drug discovery, physical simulations, molecular modeling, nuclear research, cryptanalysis, oil and gas exploration. To scale these kinds of applications across the nodes of a cluster or supercomputer Message Passing Interface (MPI) is used. The performance of MPI is one of the key aspects to achieve the expected speedup in the application performance on a HPC cluster, which in turn depends on the architecture of the servers and hence it is important to understand the same for HPC practitioners. Application performance is dependent not only on an applications' capability to scale but also on the efficiency of application to execute on an architecture. In this paper, we compare the performance of applications using MPI on two architectures of based on Intel and ARM. This is important as the former is a predominant architecture and the latter is one of the upcoming architectures among the supercomputers. We have used benchmarks which cover a wide variety of applications belonging to the Berkley dwarfs. This will help to analyze the comprehensive behavior of HPC applications on both the architectures. Finally, we present our observations in terms of computation, communication, data size and functional behavior of the applications.

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Methodology for development of Artificial Intelligence based Model for Ayurved Tongue Examination

Methodology for Development of Artificial Intelligence based...

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International Conference for Convergence of Technology (I2CT)

作者： Swapna Yenishetti Ganesh Karajkhede Lakshmi Panat HPC-MBA Group Centre For Development of Advanced Computing Pune India

ISBN: (数字)9798350394474

ISBN: (纸本)9798350394481

Artificial intelligence is emerging technology impacting our lives, especially the healthcare sector. Ayurved is a personalised medical system which involves dynamic analysis for diagnosis of diseases and treatment of ailments. AI will assist Ayurved doctor during diagnosis of diseases and treatment of ailments, improving the outcome of intervention. Darśana parikṣā (Visual Examination) is an important modality in clinical examination, useful in evaluation of signs-symptoms related to Tongue, Skin, Urine, Stool etc. Objective of this paper is to describe the methodology of development of Artificial Intelligence based model for Ayurved Tongue examination (jihvā parikṣā). The steps involved are identification of usecases for application of AI, Dataset collection and organization, AI modelling, Prediction and Re-Modeling. Readers can adopt similar methodology for the development of AI based model for darśana parikṣā of Skin, Urine, Stool, Sputum, Teeth, Nails, Hair, Eye, Wounds, which will go a long way in transforming Ayurved based healthcare by providing objective tool for *** Statement — Use of AI in indigenous system of medicine is vital but inspiring task. Ai will aid in development of non-invasive technologies for early diagnosis of diseases-conditions using Ayurveda core principles. Using real life clinical data more refined, reliable and clinically validated models can be developed. Proposed research paper will generate curiosity about use of AI in Ayurveda amongst young intelligent minds. This paper will guide readers about methodical systematic design for development of AI based models based on fundamentals of Ayurveda.

关键词： Visualization Tongue Systematics Medical services Wounds Skin Artificial intelligence

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A Reference Implementation of Blockchain Interoperability Architecture Framework

A Reference Implementation of Blockchain Interoperability Ar...

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International Conference on advanced Communication Technology (ICACT)

作者： V Harish R Swathi N Satyanarayana e- Security Department Centre for Development of Advanced Computing Hyderabad India

In this paper we describe interoperability architecture between blockchain networks. A blockchain network can serve multiple organizations that form as a consortium for dealing with transactions among themselves. However, when multiple blockchain networks are deployed how do we support interoperability and what are the major concerns in this direction have to be studied. Towards this direction, we developed a reference architecture for smooth transmission of transactions between the blockchain networks using custom designed transaction flow mechanism on top of Cactus framework from Linux Foundation.

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Porting of OpenSM over Trinetra-A Switchless Torus Network

Porting of OpenSM over Trinetra-A Switchless Torus Network

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IEEE International Conference on High Performance computing Workshops (HiPCW)

作者： V Evancer Vino John Mahesh Chaudhari Yogeshwar Sonawane Sanjay Wandhekar HPC-Technologies Group Centre for Development of Advanced Computing Pune India

ISBN: (数字)9798331509118

ISBN: (纸本)9798331509125

One of the crucial components of the cluster-based HPC system is its high-performance interconnect. Some popular HPC interconnects are InfiniBand (IB), Gigabit Ethernet, EFA, Slingshot and Omni-Path. Along with the performance of the network, its efficient management is also essential for a large HPC cluster. One such entity that performs the role of management of an IB subnet is ***-A is a high-performance, 100 Gbps, switchless torus, proprietary interconnect developed by the centre for development of advanced computing (C-DAC). Instead of developing a network manager for Trinetra-A, OpenSM has been adapted for its management. Typically, OpenSM runs on a switched network and discovers the entire network. However, Trinetra-A is a switchless network, preventing OpenSM from discovering the complete *** work presents a method to port OpenSM onto a switchless torus fabric by emulating an IB switch in software, without modifying the network hardware or OpenSM. This emulation is achieved by intercepting subnet management query packets in the Trinetra-A IB interface driver. These queries are responded suitably as if they were replies from an IB switch. Thus, while physical topology is a switchless torus, it is made to appear as a switched topology to OpenSM. The mechanism has been successfully validated on 24 server nodes connected in a 3D torus fashion using Trinetra-A interconnect. Observations show that OpenSM discovers the entire subnet, including the virtual IB switch. Subsequently, the subnet is configured successfully with the required network management parameters. Hence, the proposed method can be used to enable OpenSM over any network supporting IB software interface and with a topology that is not supported by OpenSM.

关键词： Three-dimensional displays Network topology High performance computing Switches Ethernet Software Hardware Fabrics Topology Servers

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PKI-Enabled Authentication and Encryption for Enhanced Drone Communication

PKI-Enabled Authentication and Encryption for Enhanced Drone...

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International Conference on Public Key Infrastructure and its Applications (PKIA)

作者： Pavan Jadhav Mohammed Misbahuddin Shrikrishna S Chippalkatti S D Sudarsan Centre for Development of Advanced Computing (C-DAC) Bengaluru Karnataka India

ISBN: (数字)9798350351972

ISBN: (纸本)9798350351989

In the realm of modern drone communication, where the exchange of sensitive data is ubiquitous, the assur-ance of authentication, confidentiality and integrity stands as paramount. This research paper delves into the application of Public Key Infrastructure (PKI) as a robust cryptographic frame-work to fortify the communication channels utilized by drones. Through a comprehensive exploration of PKI's mechanisms, this paper elucidates its role in ensuring the confidentiality of trans-mitted data through encryption and the preservation of integrity via digital certificates and authentication processes. Drawing upon theoretical foundations and practical implementations, this paper underscores the critical importance of PKI in safeguarding drone communication against eavesdropping, tampering, and unauthorized access. Furthermore, it examines contemporary challenges and emerging trends in PKI integration within drone networks, offering insights into potential avenues for future research and development. Drones are now essential instruments in several fields, such as emergency response, surveillance, and agriculture. Nonetheless, protecting drone communication from manipulation, illegal access, and data breaches is crucial. In addition to PKI, this paper explores the specific roles of certificate pinning and key pinning in enhancing drone communication security. Both techniques serve to further solidify the trust and authenticity of the communication endpoints, providing additional layers of protection. The purpose of this paper is to examine how PKI protects the authentication, integrity, and confidentiality of drone communications. The significance of PKI in strengthening the security posture of drone systems is emphasized by this research through an extensive examination of the body of literature and an analysis of PKI deployment options.

关键词： Surveillance Instruments Authentication Public key Market research Emergency services Encryption Protection Research and development Drones

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Mitigation of Circulating Currents in Parallel-Connected Solar PV Inverters: Real-Time Implementation and Analysis

Mitigation of Circulating Currents in Parallel-Connected Sol...

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International Conference on Power Electronic Drives

作者： Lekshmi K R Athira B P Anoop P Jinuraj K G Aby Joseph Power Electronics Group Centre for Development of Advanced Computing Thiruvananthapuram India

ISBN: (数字)9798350372472

ISBN: (纸本)9798350372489

The integration of multiple solar photovoltaic (PV) inverters in parallel configurations holds immense potential for enhancing power generation efficiency and system reliability. However, the parallel connection of inverters introduces challenges such as high-frequency circulating currents, which can adversely affect system performance and component longevity. This work presents a comprehensive study focused on real-time implementation, analysis and mitigation of circulating current issues in parallel-connected solar PV inverters. Through detailed analysis and experimental validation, the work identifies key problems associated with inverter paralleling and explores various strategies for mitigating of circulating currents. The findings provide valuable insights for improving the operation and reliability of parallel-connected solar PV systems, thereby facilitating the widespread adoption of renewable energy technologies.

关键词： Photovoltaic systems Renewable energy sources Adaptive systems System performance Prevention and mitigation Pulse width modulation Inverters Real-time systems Reliability Voltage control

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Comparative Analysis of Different Operational Transconductance Amplifiers

Comparative Analysis of Different Operational Transconductan...

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India Council International Subsections Conference (INDISCON), IEEE

作者： Kareena Yadav Pawan Srivastava Balwinder Singh Parveen Kumar Academic and Consultancy Division Centre for Development of Advanced Computing Mohali India

ISBN: (数字)9798350376753

ISBN: (纸本)9798350376760

An operational-transconductance amplifier (OTA) is a type of amplifier that has the capability to convert an input voltage signal into an output current signal. Traditional Op-amp amplifies voltage signals directly while the OTA amplifies the current making it suitable for applications such as filters, voltage-controlled oscillators, and active filters. Similar to operational amplifiers, OTAs rely on both the supply voltage and gain. To maximize the advantage, the analog circuitry depends on various parameters such as bandwidth, common mode rejection ratio, gain, noise, and power consumption. High gain and less power consumption are preferred to fulfill the desired requirements. It is observed that the circuit which is based on the current mode is preferable as compared to the voltage mode. This paper analyzes and compares various operational-transconductance amplifiers while utilizing basic current mirrors, cascode, and cascade current mirrors. The OTA having a current mirror load and current sink shows better performance as it gives high gain and consumes less power. All three circuits are simulated in 90nm CMOS technology in Cadence Virtuoso.

关键词： Current mirrors Power demand Accuracy Voltage-controlled oscillators Voltage Bandwidth Stability analysis Topology Mirrors Transconductance

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