This document describes a proposed algorithm to detect Sybil attacks in wireless sensor networks using a time difference of arrival (TDOA) localization method. Sybil attacks involve a single node forging multiple identities on the network to disrupt normal functioning. The algorithm is applied to clusters formed using the LEACH routing protocol. It aims to detect malicious head nodes (which could be Sybil attackers) by using the time differences of signals arriving at member nodes from the head node. If inconsistencies are found, the head node is identified as malicious. The algorithm seeks to detect Sybil attacks without high computational or memory overhead compared to other detection methods.
This document summarizes several energy-aware routing protocols for wireless sensor networks. It discusses classical approaches like flooding and gossiping and their deficiencies. It then describes the SPIN protocol which uses negotiations and metadata to adapt to resource constraints. Directed Diffusion is also covered, using interests, data messages, gradients, and reinforcement to set up multiple paths between sources and sinks. The document provides details on how these protocols establish and maintain paths while conserving energy in wireless sensor networks.
Based on Heterogeneity and Electing Probability of Nodes Improvement in LEACHijsrd.com
In heterogeneous sensor networks, certain nodes become cluster heads which aggregate the data of their cluster nodes and transfer it to the sink. An Improved Energy leach protocol for cluster head selection in a hierarchically clustered heterogeneous network to reorganize the network topology efficiently is proposed in this research work. The proposed algorithm will use thresholding to improve the cluster head selection. The presented algorithm considers the sensor nodes in wireless network and randomly distributed in the heterogeneous network. The coordinates of the sink and the dimensions of the sensor field are known in prior.
Directed diffusion for wireless sensor networkingHabibur Rahman
This document summarizes the key ideas of the "Directed Diffusion for Wireless Sensor Networking" paper. It introduces directed diffusion as a data-centric paradigm for wireless sensor networks that is designed for robustness, scalability, and energy efficiency. The core concepts of directed diffusion are interests, data, gradients, and reinforcement, which work together to efficiently route queries to sensor data in the network. Through localized interactions and data aggregation, directed diffusion is shown to significantly reduce energy consumption compared to flooding-based approaches in wireless sensor networks.
Data-Centric Routing Protocols in Wireless Sensor Network: A surveyAli Habeeb
This document summarizes several data-centric routing protocols for wireless sensor networks. It begins by outlining the challenges of routing in WSNs, including energy consumption, scalability, addressing, robustness, topology, and application-specific needs. It then describes several data-centric routing protocols, including flooding, directed flooding, constrained flooding, gossiping, fuzzy gossiping, location-based gossiping, and others. It notes advantages and disadvantages of these protocols for efficiently routing data in wireless sensor networks while minimizing energy consumption.
A Comparison of Routing Protocol for WSNs: Redundancy Based Approach A Compar...ijeei-iaes
Wireless Sensor Networks (WSNs) with their dynamic applications gained a tremendous attention of researchers. Constant monitoring of critical situations attracted researchers to utilize WSNs at vast platforms. The main focus in WSNs is to enhance network localization as much as one could, for efficient and optimal utilization of resources. Different approaches based upon redundancy are proposed for optimum functionality. Localization is always related with redundancy of sensor nodes deployed at remote areas for constant and fault tolerant monitoring. In this work, we propose a comparison of classic flooding and the gossip protocol for homogenous networks which enhances stability and throughput quiet significantly.
The document summarizes research on preserving source location privacy in wireless sensor networks. It proposes using computer-based image recognition to analyze traffic patterns and detect modified data packets. The key points are:
1) Wireless sensor networks are vulnerable to traffic analysis attacks that can reveal the location of data sources. Existing solutions have limitations like increased energy use.
2) The paper proposes using computer-based image recognition to analyze traffic and identify packets whose delivery was delayed, indicating modification by an attacker.
3) If the attacking node is identified, it would be removed from the network. This approach aims to effectively preserve source location privacy against traffic analysis attacks.
Shortest path algorithm for data transmission in wireless ad hoc sensor networksijasuc
Wireless sensor networks determine probable in military, environments, health and commercial
applications. The process of transferring of information from a remote sensor node to other nodes in a
network holds importance for such applications. Various constraints such as limited computation, storage
and power makes the process of transferring of information routing interesting and has opened new arenas
for researchers. The fundamental problem in sensor networks states the significance and routing of
information through a real path as path length decides some basic performance parameters for sensor
networks. This paper strongly focuses on a shortest path algorithm for wireless adhoc networks. The
simulations are performed on NS2 and the results obtained discuss the role of transferring of information
through a shortest path.
This document discusses power aware routing protocols for wireless sensor networks. It begins by describing wireless sensor networks and how they are used to monitor environmental conditions. It then classifies routing protocols for sensor networks based on their functioning, node participation style, and network structure. Specific examples are provided for different types of routing protocols, including LEACH, TEEN, APTEEN, SPIN, Rumor Routing, and PEGASIS. Chain-based and clustering routing protocols are also summarized.
This document summarizes several energy-aware routing protocols for wireless sensor networks. It discusses classical approaches like flooding and gossiping and their deficiencies. It then describes the SPIN protocol which uses negotiations and metadata to adapt to resource constraints. Directed Diffusion is also covered, using interests, data messages, gradients, and reinforcement to set up multiple paths between sources and sinks. The document provides details on how these protocols establish and maintain paths while conserving energy in wireless sensor networks.
Based on Heterogeneity and Electing Probability of Nodes Improvement in LEACHijsrd.com
In heterogeneous sensor networks, certain nodes become cluster heads which aggregate the data of their cluster nodes and transfer it to the sink. An Improved Energy leach protocol for cluster head selection in a hierarchically clustered heterogeneous network to reorganize the network topology efficiently is proposed in this research work. The proposed algorithm will use thresholding to improve the cluster head selection. The presented algorithm considers the sensor nodes in wireless network and randomly distributed in the heterogeneous network. The coordinates of the sink and the dimensions of the sensor field are known in prior.
Directed diffusion for wireless sensor networkingHabibur Rahman
This document summarizes the key ideas of the "Directed Diffusion for Wireless Sensor Networking" paper. It introduces directed diffusion as a data-centric paradigm for wireless sensor networks that is designed for robustness, scalability, and energy efficiency. The core concepts of directed diffusion are interests, data, gradients, and reinforcement, which work together to efficiently route queries to sensor data in the network. Through localized interactions and data aggregation, directed diffusion is shown to significantly reduce energy consumption compared to flooding-based approaches in wireless sensor networks.
Data-Centric Routing Protocols in Wireless Sensor Network: A surveyAli Habeeb
This document summarizes several data-centric routing protocols for wireless sensor networks. It begins by outlining the challenges of routing in WSNs, including energy consumption, scalability, addressing, robustness, topology, and application-specific needs. It then describes several data-centric routing protocols, including flooding, directed flooding, constrained flooding, gossiping, fuzzy gossiping, location-based gossiping, and others. It notes advantages and disadvantages of these protocols for efficiently routing data in wireless sensor networks while minimizing energy consumption.
A Comparison of Routing Protocol for WSNs: Redundancy Based Approach A Compar...ijeei-iaes
Wireless Sensor Networks (WSNs) with their dynamic applications gained a tremendous attention of researchers. Constant monitoring of critical situations attracted researchers to utilize WSNs at vast platforms. The main focus in WSNs is to enhance network localization as much as one could, for efficient and optimal utilization of resources. Different approaches based upon redundancy are proposed for optimum functionality. Localization is always related with redundancy of sensor nodes deployed at remote areas for constant and fault tolerant monitoring. In this work, we propose a comparison of classic flooding and the gossip protocol for homogenous networks which enhances stability and throughput quiet significantly.
The document summarizes research on preserving source location privacy in wireless sensor networks. It proposes using computer-based image recognition to analyze traffic patterns and detect modified data packets. The key points are:
1) Wireless sensor networks are vulnerable to traffic analysis attacks that can reveal the location of data sources. Existing solutions have limitations like increased energy use.
2) The paper proposes using computer-based image recognition to analyze traffic and identify packets whose delivery was delayed, indicating modification by an attacker.
3) If the attacking node is identified, it would be removed from the network. This approach aims to effectively preserve source location privacy against traffic analysis attacks.
Shortest path algorithm for data transmission in wireless ad hoc sensor networksijasuc
Wireless sensor networks determine probable in military, environments, health and commercial
applications. The process of transferring of information from a remote sensor node to other nodes in a
network holds importance for such applications. Various constraints such as limited computation, storage
and power makes the process of transferring of information routing interesting and has opened new arenas
for researchers. The fundamental problem in sensor networks states the significance and routing of
information through a real path as path length decides some basic performance parameters for sensor
networks. This paper strongly focuses on a shortest path algorithm for wireless adhoc networks. The
simulations are performed on NS2 and the results obtained discuss the role of transferring of information
through a shortest path.
This document discusses power aware routing protocols for wireless sensor networks. It begins by describing wireless sensor networks and how they are used to monitor environmental conditions. It then classifies routing protocols for sensor networks based on their functioning, node participation style, and network structure. Specific examples are provided for different types of routing protocols, including LEACH, TEEN, APTEEN, SPIN, Rumor Routing, and PEGASIS. Chain-based and clustering routing protocols are also summarized.
This document discusses clustering techniques to analyze communication overhead in wireless sensor networks. It describes how clustering can help reduce energy consumption and traffic load by limiting redundant data transmission. The document compares the K-means and fuzzy clustering algorithms. The K-means algorithm partitions nodes into K clusters based on distance from cluster centers, while fuzzy clustering allows nodes to belong to multiple clusters. A simulation found that fuzzy clustering results in lower communication overhead than K-means as node velocity increases, helping to increase network lifetime.
This document provides an overview and critical review of routing protocols in wireless sensor networks. It begins with an introduction to wireless sensor networks and their applications. It then discusses several related works on routing protocols. The main body discusses different types of routing protocols, including location-based protocols like MECN and GEAR, hierarchical protocols like LEACH and PEGASIS, and data-centric protocols like SPIN and Directed Diffusion. It provides examples of each type and evaluates them based on factors like energy efficiency, scalability, reliability and more. Finally, it lists references for further reading on routing protocols in wireless sensor networks.
A NOVEL APPROACH FOR ENERGY EFFICIENT HIERARCHY BASED ROUTING IN SENSOR NETWO...cscpconf
Wireless sensor network (WSN) is the collection of many micro-sensor nodes, connecting each other by a
wireless medium. WSN exhibits different approaches to provide reliable sensing of the environment,
detecting and reporting events. In this paper, we have proposed an algorithm for hierarchy based protocols
of wireless sensor networks, which consist of two groups of sensor nodes in a single cluster node. Each
cluster consists of a three cluster head. The event driven data sensing mechanism is used in this paper and
this sensed data is transmitted to the master section head. Hence efficient way of data transmission is possible with larger group of nodes. In this approach, using hierarchy based protocols; the lifetime of the sensor network is increased.
This presentation is all about the wireless sensor networks, how they collect data using aggregation, and how they evaluate or calculate the parameters
Analysis of Cluster Based Anycast Routing Protocol for Wireless Sensor NetworkIJMER
A wireless sensor network is a collection of nodes organized into a cooperative network.
Each node consists of processing capability, may contain multiple types of memory, have a RF
transceiver, have a power source, and accommodate various sensors and actuators. The nodes
communicate wirelessly and often self-organize after being deployed in an ad hoc fashion.
Routing protocols for wireless sensor networks are responsible for maintaining the routes in the
network and have to ensure reliable multi-hop communication .The performance of the network is
greatly influenced by the routing techniques. Routing is to find out the path to route the sensed data to
the base station. In this paper the features of WSNs are introduced and routing protocols are reviewed
for Wireless Sensor Network.
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
Routing protocol on wireless sensor networkshashankcsnits
The document summarizes routing protocols for wireless sensor networks. It first defines wireless sensor networks and describes their key characteristics. It then surveys traditional routing techniques like flooding and gossiping, as well as current techniques including flat routing protocols like SPIN and directed diffusion, hierarchical routing protocols like LEACH and PEGASIS, and location-based routing protocols like GEAR. For each protocol, it provides a brief overview of how it works and compares their advantages and disadvantages. In conclusion, it states that hierarchical routing protocols generally outperform flat routing protocols, and references several papers on sensor network routing.
The peer-reviewed International Journal of Engineering Inventions (IJEI) is started with a mission to encourage contribution to research in Science and Technology. Encourage and motivate researchers in challenging areas of Sciences and Technology.
Routing protocols in wireless sensor networks face several unique challenges compared to other wireless networks. The document discusses these challenges and provides an overview of common routing protocol approaches in WSNs, including flat routing protocols like SPIN and Directed Diffusion, hierarchical routing protocols like LEACH, and location-based routing protocols. It also covers routing design issues specific to WSNs such as energy efficiency, data delivery models, fault tolerance, and quality of service.
A seminar report on data aggregation in wireless sensor networkspraveen369
This document summarizes a seminar report on data aggregation in wireless sensor networks. It discusses the goals of improving energy efficiency and network lifetime through data aggregation. It provides an overview of different data aggregation approaches, including in-network aggregation, tree-based approaches, and cluster-based approaches. It also discusses query processing and security challenges in wireless sensor networks.
Node clone detection using a stable overlay network IJECEIAES
Wireless sensor networks consist of number of sensor nodes widely distributed in particular region to communicate and sharing the environmental information and also these data‟s are stored in central location for further data prediction. Such nodes are susceptible to cloning attack where the adversary captures a node, replicates with the same identity as that of the captured node and deploys the clone back into the network, causing severe harm to the network. Hence to thwart such attacks, a distributed detection protocol is used with initiator-observer-inspector roles assigned randomly for the nodes to witness the clone and thereby broadcast the evidence through a balanced overlay network. Use of such balanced network provides high security level and reduces the communication cost when compared to other overlay networks with a reasonably less storage consumption.
Black Hole Attack:
A malicious node advertises the wrong paths as good paths to the source node during the pathfinding process.
When the source selects the path including the attacker node, the traffic starts passing through the adversary node and this node starts dropping the packets selectively or in whole.
Black hole region is the entry point to a large number of harmful attacks.
Mobile Ad-Hoc Networks are most usefully in current environments. It’s required high performance, networks load and Throughput. In Mobile Ad-hoc Networks Routing is the hot topic for research. Basically two types routing protocols are work in the mobile Ad-hoc Networks: 1) Proactive and 2) Reactive. Researchers have projected different routing algorithm. Important work has been done on routing in ad hoc networks, some of the important works so far were the destination-sequence distance vector (DSDV) protocol, the temporally ordered routing protocol (TORA), dynamic source routing protocol (DSR) and ad hoc on demand routing protocol (AODV). These algorithms use Open Shortest Path First (OSPF) for find optimum route source to destination.ThesisScientist.com
Routing protocols for wireless sensor networks face several unique challenges compared to other wireless networks. This document discusses routing challenges in wireless sensor networks and provides an overview of different routing protocol approaches, including flat routing, hierarchical routing, location-based routing, and QoS-based routing. It specifically describes two flat routing protocols: directed diffusion, which uses data negotiation and aggregation to reduce energy costs, and SPIN, which employs data description messages to avoid redundant transmissions through negotiation between sensor nodes.
This document summarizes an academic paper that proposes a new Energy Minimized Opportunistic Routing (EMOR) protocol for wireless sensor networks. EMOR aims to enhance source location privacy and minimize energy usage. It uses opportunistic routing to dynamically change paths from source to destination, hiding the source location. Additionally, EMOR reduces transmission power of each node to minimize energy consumption while still reliably transmitting packets. The paper reviews related work on source privacy and energy efficiency in wireless routing protocols and presents simulation results showing EMOR provides better source privacy compared to existing opportunistic routing while also reducing energy usage.
CODE AWARE DYNAMIC SOURCE ROUTING FOR DISTRIBUTED SENSOR NETWORKIJNSA Journal
Sensor network facilitates monitoring and controlling of physical environments. These wireless networks consist of dense collection of sensors capable of collection and dissemination of data. They have application in variety of fields such as military purposes, environment monitoring etc. Typical deployment of sensor network assumes central processing station or a gateway to which all other nodes route their data using dynamic source routing (DSR). This causes congestion at central station and thus reduces the efficiency of the network. In this work we will propose a better dynamic source routing technique using network coding to reduce total number of transmission in sensor networks resulting in better efficiency.
Spatial Correlation Based Medium Access Control Protocol Using DSR & AODV Rou...IOSR Journals
The document summarizes a proposed spatial correlation-based medium access control protocol for wireless sensor networks that aims to improve energy efficiency. It discusses how sensor nodes are spatially distributed and correlated in detecting events. An iterative node selection algorithm is used to select a minimum set of representative sensor nodes based on a distortion constraint, in order to reduce redundant transmissions. The protocol uses vector quantization to calculate distances between nodes and a mobile element. It then evaluates the performance of using the DSR and AODV routing protocols with this spatial correlation-based MAC protocol in terms of energy consumption and packet drop ratio through simulations. The simulation results show that the protocol with AODV routing performs better than with DSR routing.
This document summarizes several cluster-based routing protocols for wireless sensor networks that aim to improve energy efficiency. It discusses both pre-established protocols like LEACH, EEHC, and HEED, as well as on-demand protocols like Passive Clustering and Energy Level-based Passive Clustering. For each protocol, it describes the key ideas such as random cluster head election, using residual energy to select cluster heads, and rotating cluster head roles to balance energy load among nodes. The document concludes that hierarchical routing protocols can improve energy efficiency but optimal clustering parameters and handling of network dynamics are still challenges.
A Lightweight Algorithm for Detecting Sybil Attack in Mobile Wireless Sensor ...Editor IJCATR
Considering the application of wireless sensor networks in critical area, such as battlefields, establishing security in these
networks is of utmost importance. One of the most serious and dangerous attack against these networks is Sybil attack. In this attack, a
malicious hostile node creates multiple fake identities simultaneously. This misleads legitimate nodes and, by mistake, they assume
each of these identifiers as real separate nodes. In this attack, malicious hostile node attracts so heavy traffic that can dramatically
disrupt routing protocols which has devastating effects on the network functions such as data integration, voting, and resource
allocation. The current research proposes a new lightweight algorithm for detecting Sybil attack in Mobile Wireless Sensor Networks
using sink nodes. The proposed algorithm is implemented to be assessed in terms of detection and error rates efficiency in a series of
experiments. Comparison of the experiment results with the results of other available algorithms revealed optimal performance of the
proposed algorithm.
Compared to wired networks, Ad hoc networks are more vulnerable to security attacks
due to the lack of trusted centralized authority, lack of trust relationships between nodes. This paper
focuses on Sybil attack and its detection. A malicious node can generate and control a large number
of logical identities on a single device. This gives the illusion to network as these are different
legitimate nodes. An algorithm is proposed using position verification to detect the Sybil attack. The
algorithm is implemented in Network Simulator and the throughput, and packet delivery ratio with
and without Sybil attack.
This document discusses clustering techniques to analyze communication overhead in wireless sensor networks. It describes how clustering can help reduce energy consumption and traffic load by limiting redundant data transmission. The document compares the K-means and fuzzy clustering algorithms. The K-means algorithm partitions nodes into K clusters based on distance from cluster centers, while fuzzy clustering allows nodes to belong to multiple clusters. A simulation found that fuzzy clustering results in lower communication overhead than K-means as node velocity increases, helping to increase network lifetime.
This document provides an overview and critical review of routing protocols in wireless sensor networks. It begins with an introduction to wireless sensor networks and their applications. It then discusses several related works on routing protocols. The main body discusses different types of routing protocols, including location-based protocols like MECN and GEAR, hierarchical protocols like LEACH and PEGASIS, and data-centric protocols like SPIN and Directed Diffusion. It provides examples of each type and evaluates them based on factors like energy efficiency, scalability, reliability and more. Finally, it lists references for further reading on routing protocols in wireless sensor networks.
A NOVEL APPROACH FOR ENERGY EFFICIENT HIERARCHY BASED ROUTING IN SENSOR NETWO...cscpconf
Wireless sensor network (WSN) is the collection of many micro-sensor nodes, connecting each other by a
wireless medium. WSN exhibits different approaches to provide reliable sensing of the environment,
detecting and reporting events. In this paper, we have proposed an algorithm for hierarchy based protocols
of wireless sensor networks, which consist of two groups of sensor nodes in a single cluster node. Each
cluster consists of a three cluster head. The event driven data sensing mechanism is used in this paper and
this sensed data is transmitted to the master section head. Hence efficient way of data transmission is possible with larger group of nodes. In this approach, using hierarchy based protocols; the lifetime of the sensor network is increased.
This presentation is all about the wireless sensor networks, how they collect data using aggregation, and how they evaluate or calculate the parameters
Analysis of Cluster Based Anycast Routing Protocol for Wireless Sensor NetworkIJMER
A wireless sensor network is a collection of nodes organized into a cooperative network.
Each node consists of processing capability, may contain multiple types of memory, have a RF
transceiver, have a power source, and accommodate various sensors and actuators. The nodes
communicate wirelessly and often self-organize after being deployed in an ad hoc fashion.
Routing protocols for wireless sensor networks are responsible for maintaining the routes in the
network and have to ensure reliable multi-hop communication .The performance of the network is
greatly influenced by the routing techniques. Routing is to find out the path to route the sensed data to
the base station. In this paper the features of WSNs are introduced and routing protocols are reviewed
for Wireless Sensor Network.
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
Routing protocol on wireless sensor networkshashankcsnits
The document summarizes routing protocols for wireless sensor networks. It first defines wireless sensor networks and describes their key characteristics. It then surveys traditional routing techniques like flooding and gossiping, as well as current techniques including flat routing protocols like SPIN and directed diffusion, hierarchical routing protocols like LEACH and PEGASIS, and location-based routing protocols like GEAR. For each protocol, it provides a brief overview of how it works and compares their advantages and disadvantages. In conclusion, it states that hierarchical routing protocols generally outperform flat routing protocols, and references several papers on sensor network routing.
The peer-reviewed International Journal of Engineering Inventions (IJEI) is started with a mission to encourage contribution to research in Science and Technology. Encourage and motivate researchers in challenging areas of Sciences and Technology.
Routing protocols in wireless sensor networks face several unique challenges compared to other wireless networks. The document discusses these challenges and provides an overview of common routing protocol approaches in WSNs, including flat routing protocols like SPIN and Directed Diffusion, hierarchical routing protocols like LEACH, and location-based routing protocols. It also covers routing design issues specific to WSNs such as energy efficiency, data delivery models, fault tolerance, and quality of service.
A seminar report on data aggregation in wireless sensor networkspraveen369
This document summarizes a seminar report on data aggregation in wireless sensor networks. It discusses the goals of improving energy efficiency and network lifetime through data aggregation. It provides an overview of different data aggregation approaches, including in-network aggregation, tree-based approaches, and cluster-based approaches. It also discusses query processing and security challenges in wireless sensor networks.
Node clone detection using a stable overlay network IJECEIAES
Wireless sensor networks consist of number of sensor nodes widely distributed in particular region to communicate and sharing the environmental information and also these data‟s are stored in central location for further data prediction. Such nodes are susceptible to cloning attack where the adversary captures a node, replicates with the same identity as that of the captured node and deploys the clone back into the network, causing severe harm to the network. Hence to thwart such attacks, a distributed detection protocol is used with initiator-observer-inspector roles assigned randomly for the nodes to witness the clone and thereby broadcast the evidence through a balanced overlay network. Use of such balanced network provides high security level and reduces the communication cost when compared to other overlay networks with a reasonably less storage consumption.
Black Hole Attack:
A malicious node advertises the wrong paths as good paths to the source node during the pathfinding process.
When the source selects the path including the attacker node, the traffic starts passing through the adversary node and this node starts dropping the packets selectively or in whole.
Black hole region is the entry point to a large number of harmful attacks.
Mobile Ad-Hoc Networks are most usefully in current environments. It’s required high performance, networks load and Throughput. In Mobile Ad-hoc Networks Routing is the hot topic for research. Basically two types routing protocols are work in the mobile Ad-hoc Networks: 1) Proactive and 2) Reactive. Researchers have projected different routing algorithm. Important work has been done on routing in ad hoc networks, some of the important works so far were the destination-sequence distance vector (DSDV) protocol, the temporally ordered routing protocol (TORA), dynamic source routing protocol (DSR) and ad hoc on demand routing protocol (AODV). These algorithms use Open Shortest Path First (OSPF) for find optimum route source to destination.ThesisScientist.com
Routing protocols for wireless sensor networks face several unique challenges compared to other wireless networks. This document discusses routing challenges in wireless sensor networks and provides an overview of different routing protocol approaches, including flat routing, hierarchical routing, location-based routing, and QoS-based routing. It specifically describes two flat routing protocols: directed diffusion, which uses data negotiation and aggregation to reduce energy costs, and SPIN, which employs data description messages to avoid redundant transmissions through negotiation between sensor nodes.
This document summarizes an academic paper that proposes a new Energy Minimized Opportunistic Routing (EMOR) protocol for wireless sensor networks. EMOR aims to enhance source location privacy and minimize energy usage. It uses opportunistic routing to dynamically change paths from source to destination, hiding the source location. Additionally, EMOR reduces transmission power of each node to minimize energy consumption while still reliably transmitting packets. The paper reviews related work on source privacy and energy efficiency in wireless routing protocols and presents simulation results showing EMOR provides better source privacy compared to existing opportunistic routing while also reducing energy usage.
CODE AWARE DYNAMIC SOURCE ROUTING FOR DISTRIBUTED SENSOR NETWORKIJNSA Journal
Sensor network facilitates monitoring and controlling of physical environments. These wireless networks consist of dense collection of sensors capable of collection and dissemination of data. They have application in variety of fields such as military purposes, environment monitoring etc. Typical deployment of sensor network assumes central processing station or a gateway to which all other nodes route their data using dynamic source routing (DSR). This causes congestion at central station and thus reduces the efficiency of the network. In this work we will propose a better dynamic source routing technique using network coding to reduce total number of transmission in sensor networks resulting in better efficiency.
Spatial Correlation Based Medium Access Control Protocol Using DSR & AODV Rou...IOSR Journals
The document summarizes a proposed spatial correlation-based medium access control protocol for wireless sensor networks that aims to improve energy efficiency. It discusses how sensor nodes are spatially distributed and correlated in detecting events. An iterative node selection algorithm is used to select a minimum set of representative sensor nodes based on a distortion constraint, in order to reduce redundant transmissions. The protocol uses vector quantization to calculate distances between nodes and a mobile element. It then evaluates the performance of using the DSR and AODV routing protocols with this spatial correlation-based MAC protocol in terms of energy consumption and packet drop ratio through simulations. The simulation results show that the protocol with AODV routing performs better than with DSR routing.
This document summarizes several cluster-based routing protocols for wireless sensor networks that aim to improve energy efficiency. It discusses both pre-established protocols like LEACH, EEHC, and HEED, as well as on-demand protocols like Passive Clustering and Energy Level-based Passive Clustering. For each protocol, it describes the key ideas such as random cluster head election, using residual energy to select cluster heads, and rotating cluster head roles to balance energy load among nodes. The document concludes that hierarchical routing protocols can improve energy efficiency but optimal clustering parameters and handling of network dynamics are still challenges.
A Lightweight Algorithm for Detecting Sybil Attack in Mobile Wireless Sensor ...Editor IJCATR
Considering the application of wireless sensor networks in critical area, such as battlefields, establishing security in these
networks is of utmost importance. One of the most serious and dangerous attack against these networks is Sybil attack. In this attack, a
malicious hostile node creates multiple fake identities simultaneously. This misleads legitimate nodes and, by mistake, they assume
each of these identifiers as real separate nodes. In this attack, malicious hostile node attracts so heavy traffic that can dramatically
disrupt routing protocols which has devastating effects on the network functions such as data integration, voting, and resource
allocation. The current research proposes a new lightweight algorithm for detecting Sybil attack in Mobile Wireless Sensor Networks
using sink nodes. The proposed algorithm is implemented to be assessed in terms of detection and error rates efficiency in a series of
experiments. Comparison of the experiment results with the results of other available algorithms revealed optimal performance of the
proposed algorithm.
Compared to wired networks, Ad hoc networks are more vulnerable to security attacks
due to the lack of trusted centralized authority, lack of trust relationships between nodes. This paper
focuses on Sybil attack and its detection. A malicious node can generate and control a large number
of logical identities on a single device. This gives the illusion to network as these are different
legitimate nodes. An algorithm is proposed using position verification to detect the Sybil attack. The
algorithm is implemented in Network Simulator and the throughput, and packet delivery ratio with
and without Sybil attack.
DTADA: Distributed Trusted Agent Based Detection Approach For Doline And Sen...IOSR Journals
This document proposes a distributed trusted agent-based approach (DTADA) to detect and defend against cloning attacks and sinkhole attacks in wireless sensor networks. DTADA uses mobile agents that can move between nodes to detect attacks in a distributed manner without relying on a centralized authority. The mobile agents are programmed to identify inconsistencies that would indicate a cloning or sinkhole attack has occurred. The document reviews related work on centralized and local detection methods and their limitations. It then describes how DTADA uses mobile agents to efficiently detect attacks in a distributed way without high communication or energy costs.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
Wireless Sensor Network (WSN) consists of large number of sensor nodes capable of forming
instantaneous network with dynamic topology. Each node simultaneously as both router and
host. Number of nodes in a WSN can vary either due to the mobility or death of nodes due to
drained conditions. Low Energy Aware Cluster Hierarchy (LEACH) is a most popular dynamic
clustering protocol for WSN. Deployment in unattended environment, limited memory, limited
power and low computational power of a sensor node make these networks susceptible to
attacks launched by malicious nodes. This paper provides an overview of LEACH protocol and
how LEACH can be compromised by malicious nodes. We propose a attack on LEACH –
Snooze attack. This paper we present a way to simulate this attack on NS-2 which is
demonstrative on throughput. We observe that during simulation throughput drops as an effect
of attack. It is observed that the effect of the attack gets aggregated as we increase the number
of attackers.
Wireless Sensor Network (WSN) consists of large number of sensor nodes capable of forming instantaneous network with dynamic topology. Each node simultaneously as both router and
host. Number of nodes in a WSN can vary either due to the mobility or death of nodes due to
drained conditions. Low Energy Aware Cluster Hierarchy (LEACH) is a most popular dynamic
clustering protocol for WSN. Deployment in unattended environment, limited memory, limited power and low computational power of a sensor node make these networks susceptible to attacks launched by malicious nodes. This paper provides an overview of LEACH protocol and how LEACH can be compromised by malicious nodes. We propose a attack on LEACH – Snooze attack. This paper we present a way to simulate this attack on NS-2 which is demonstrative on throughput. We observe that during simulation throughput drops as an effect of attack. It is observed that the effect of the attack gets aggregated as we increase the number of attackers.
Iaetsd a survey on enroute filtering scheme inIaetsd Iaetsd
This document discusses enroute filtering schemes in wireless sensor networks to prevent false data injection attacks. It provides an overview of existing statistical enroute filtering and location-based resilient security schemes that have limitations such as threshold restrictions. The document then proposes using a cluster-based compromise resilient enroute filtering scheme where sensor nodes are organized into clusters. In this scheme, cluster heads aggregate and transmit data to base stations through forwarding nodes. This is said to provide higher security than other filtering schemes by overcoming prior limitations and disadvantages related to compromised node thresholds, non-resilience to attacks, and dependency on node localization.
IRJET- Enhanced ID based Data Aggregation and Detection Against Sybil Attack ...IRJET Journal
This document summarizes a research paper that proposes a Challenge-Response Authentication Protocol (CRAP) to detect Sybil attacks in wireless sensor networks. The CRAP generates unique keys for each transmission to provide encrypted communication. It is used to prevent Sybil attacks where an attacker steals node identities during data transmission. The performance of the detection scheme is evaluated using detection ratio. The proposed CRAP involves three phases: 1) nodes are selected and grouped, 2) two nearby nodes transmit packets to detect collisions indicating Sybil nodes, 3) if no hop is detected between Sybil identities, the nodes are confirmed to be under attack. The scheme is analyzed using performance metrics like packet delivery ratio, energy efficiency, and attack detection ratio.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Computational Engineering Research(IJCER)ijceronline
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
AN IMPROVED WATCHDOG TECHNIQUE BASED ON POWER-AWARE HIERARCHICAL DESIGN FOR I...IJNSA Journal
This document proposes an improved watchdog technique for intrusion detection in wireless sensor networks. The technique uses a hierarchical model with cluster head nodes acting as watchdogs to monitor network activity within each cell. This is intended to overcome issues with the original watchdog mechanism and reduce power consumption, extending the lifetime of sensor nodes. The algorithm for malicious node detection involves the cluster head eavesdropping on transmissions, comparing messages to a buffer, and raising warnings if messages do not match. Simulation results showed this approach increased network lifetime by around 2611 seconds compared to a non-hierarchical model.
Secure and Efficient Hierarchical Data Aggregation in Wireless Sensor NetworksIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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A security method for multiple attacks in sensor networks against the false r...ijitjournal
In a large scale wireless sensor network, various attacks rapidly spread damages in the network from
inside and outside attacks such as the false report injection attack and the sinkhole attack, respectively.
These attacks drain finite energy resources and devastate constructed routing paths via compromised
nodes. The security methods like SEF (statistical en-route filtering scheme) and LEAP (localized encryption
and authentication protocol) try to cope with these attacks. When these attacks occur at the same time, SEF
and LEAP should be operated simultaneously in the sensor network thus, it introduces some inefficiency. In
this paper, we propose a security method which improves the energy efficiency while maintaining the
security level compared to the simultaneous application of SEF and LEAP. The proposed method is
designed by identifying and eliminating the redundancies within the simultaneous application of the two
methods and providing more efficient functionalities. In the proposed method, two types of new keys are
designed and provided for simultaneous detection of the attacks. Four types of keys are used in each sensor
node – a P1 for encrypting information, a PK (pairwise key) for keeping secure paths, a P2 for verifying a
specific cluster, and a GK (group key) for encrypting message. Among these keys, P1 and P2 are newly
provided keys. We have evaluated the effectiveness of the proposed method compared to the simultaneous
application of SEF and LEAP when the multiple attacks occur. The experiment results show that our
proposed method saves energy up to 10% while maintaining the detection power
Energy Efficient and Secure, Trusted network discovery for Wireless Sensor Ne...IOSR Journals
This document describes a proposed energy efficient and secure trusted network discovery framework for wireless sensor networks called TARF. The framework aims to secure routing against attacks like sinkhole, wormhole, and Sybil attacks by evaluating the trustworthiness of neighboring nodes. It identifies untrustworthy nodes and routes around them. TARF also aims to be energy efficient. It uses elliptic curve cryptography for encryption and maintains a neighborhood table with trust and energy cost values to select low-cost, trusted next hop nodes for routing. The framework generates network certificates, starts sensor nodes, creates a trusted center, and has nodes find neighbors to select routing paths while avoiding attackers. Simulation results show certificate generation, node interfaces, the trusted center, and a node finding
A Survey on Secure Hierarchical LEACH Protocol over Wireless Sensor NetworkIJERD Editor
Wireless Sensor Network contain number of nodes. Lifetime of Sensor nodes depend on their battery
power, which cannot be reenergize. Thus, to save the node energy & lifetime of the Network energy efficient
LEACH protocol is introduced. Wireless sensor networks are facing many experiments such as the partial source
in processing power, storage and energy. The inadequate energy source is one of the main tasks facing the security
in such networks. LEACH doesn’t shield the safety harms. So we want to improve security scenario of Secure
LEACH protocol. Hierarchical or cluster base routing protocol for WSNs is the most energy-efficient among other
routing protocols. This paper shows different security mechanism used in LEACH protocol. This all protocol is
based on Hierarchical routing protocol. This paper shows basic scenario of security in LEACH.
Performance Evaluation of Wireless Sensor Networks Communication Overhead and...ijtsrd
Powerful actors and resource constrained sensors are joined in wireless networks to form Wireless Sensor and Actor Networks WSANs . The lifespan of a sensor network may be effectively increased by clustering. The method of clustering involves breaking up sensor networks into smaller, more nimble groups of individuals with a cluster head. In hierarchically organised wireless sensor networks, clustering algorithms must choose the ideal number of clusters. In this study, we examine the effectiveness of cluster based wireless sensor networks for various wireless sensor network communication patterns WSNs . By utilising the self organizing map SOM based clustering approach, we concentrate on their performances in terms of Communication overhead and Energy consumption in WSN with varied velocities for the cluster based protocol. Mangukiya Hiteshkumar Bhupatbhai "Performance Evaluation of Wireless Sensor Networks' Communication Overhead and Energy Consumption using the Self-Organizing Map Method" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-6 | Issue-6 , October 2022, URL: https://www.ijtsrd.com/papers/ijtsrd51936.pdf Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/51936/performance-evaluation-of-wireless-sensor-networks-communication-overhead-and-energy-consumption-using-the-selforganizing-map-method/mangukiya-hiteshkumar-bhupatbhai
Protocols for detection of node replication attack on wireless sensor networkIOSR Journals
This document summarizes two techniques for detecting node replication attacks in wireless sensor networks: centralized detection and distributed detection. Centralized detection involves nodes reporting information to a base station, which can detect replication by identifying conflicting location claims for the same node ID. Distributed detection techniques like witness-based strategies and deployment knowledge allow nodes to detect replication locally without a base station through methods like node broadcasting claims to witness nodes. The document analyzes the advantages and limitations of each approach.
AN ENERGY EFFICIENT COUNTERMEASURE AGAINST MULTIPLE ATTACKS OF THE FALSE DATA...ijcsity
Nodes are easily exposed from generated attacks on various layers because they compose simple functions in sensor networks. The false data injection attack drains finite energy resource in a compromised node,and the false HELLO flood attack threatens constructed routing paths in an adversary node. A localized encryption and authentication protocol (LEAP) was developed to prevent the aforementioned attacks through the use of four keys. However, when these attacks occur simultaneously, LEAP may not prevent damage from spreading rapidly throughout the network. In this paper, we propose a method that addresses these attacks through the use of four types of keys, including two new keys. We also improve energy consumption while maintaining a suitable security level. The effectiveness of the proposed method was evaluated relative to that of LEAP when multiple attacks occur. The experimental results reveal that the proposed method enhances energy saving by up to 12% while maintaining sufficient detection power
Efficient distributed detection of node replication attacks in mobile sensor ...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document discusses various techniques for reducing peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. It describes common PAPR reduction techniques such as partial transmit sequence (PTS), selective mapping (SLM), tone injection, peak cancellation, and peak windowing. It analyzes these techniques based on parameters like distortion, power increase, data rate loss, and bit error rate improvement. The document concludes that while SLM is better for PAPR reduction as it does not cause out-of-band radiation or degrade bit error rate performance, it has the drawback of increased complexity with larger number of subcarriers or phase sequences.
This document summarizes the performance enhancement and characterization of a junctionless vertical slit field effect transistor (JLVeSFET). Key findings from simulations include:
1) The JLVeSFET shows an optimized subthreshold slope of 65mV/decade and OFF current of ~10-18A/μm for a 50nm radius device with a high-k dielectric.
2) Using a high-k dielectric (Si3N4) instead of SiO2 increases the Ion/Ioff ratio to ~1011 and reduces the subthreshold slope to 63mV/decade.
3) Increasing the gate doping concentration reduces the subthreshold slope slightly while increasing the Ion/
This document summarizes research that analyzed the effect of temperature on the parameters of silicon solar cells. It was found that the open circuit voltage (Voc) of the solar cells decreases linearly as temperature increases from 20°C to 80°C. In contrast, the short circuit current (Isc) was found to increase only slightly with higher temperatures. The maximum efficiency of 18.5% was obtained at 20°C when Voc was 667.3mV and Isc was 37.56mA. Overall, the study demonstrated that higher temperatures negatively impact the Voc, fill factor, and efficiency of silicon solar cells.
The document presents a new bridgeless single-phase AC-DC converter based on a single-ended primary inductance converter (SEPIC) topology. The proposed rectifier utilizes a bidirectional switch and two fast diodes. It has less conduction losses compared to existing power factor correction rectifiers due to fewer components conducting during each switching cycle. Experimental results show the converter can achieve a high power factor under universal input voltage conditions and provide regulated output voltage for resistive and incandescent lamp loads. Future work may include further optimizing the design for applications requiring high power quality input power.
The document presents a new ontology matching system based on a multi-agent architecture. The system takes ontologies described in XML, RDF Schema, and OWL as input. It uses multiple matchers and filtering to generate mappings between ontology entities. The mappings are then validated. The system is implemented as a multi-agent system with different agent types responsible for resources, matching, generating mappings, and filtering/validating mappings. The architecture allows for robust, flexible, and scalable ontology matching.
This document discusses techniques to reduce leakage current and power consumption in static random-access memory (SRAM) cells implemented using independent gate fin field-effect transistors (FinFETs). It first describes the independent gate FinFET SRAM cell design and its advantages over other designs. It then examines two circuit-level leakage reduction techniques: 1) using multi-threshold voltages by connecting high-threshold transistors to reduce leakage when in standby mode, and 2) adding a gated power supply transistor to reduce leakage through stacking effects. Simulation results show that both techniques can reduce leakage current and power in the independent gate FinFET SRAM cell, with multi-threshold voltages providing better leakage control.
This document summarizes a survey on string similarity matching search techniques. It discusses how string similarity matching is used to find relevant information in text collections. The document reviews different algorithms for string matching, including edit distance, NR-grep, n-grams, and approaches based on hashing and locality-sensitive hashing. It analyzes techniques like pattern matching, threshold-based joins, and vector representations. The goal is to present an overview of the field and compare algorithm performance for similarity searches.
The document reviews various methods for enhancing the bandwidth of microstrip patch antennas. It discusses how modifying the patch shape, using multilayer configurations, planar/stacked multi-resonator structures, and different feeding techniques can increase the antenna's bandwidth. Modified patch shapes, multilayer structures, and proximity coupled feeding provide the greatest bandwidth enhancements, with multilayer designs potentially achieving over 70% bandwidth. The review concludes that slot loading and multilayer techniques are most effective for enhancing bandwidth while maintaining a small antenna size.
This document presents a new method for interpolation called weighted average interpolation (WAI). WAI uses the concepts of positive and negative effect to determine the influence of neighboring data points. Correction factors are derived from Pascal's triangle to match the results of WAI to Lagrange interpolation. The method is extended to extrapolation and unevenly spaced data using similar concepts. WAI aims to reduce the number of operations compared to Lagrange interpolation while maintaining accuracy.
This document presents a theorem about the almost Norlund summability of conjugate Fourier series. It generalizes previous results by Pati (1961) and Singh and Singh (1993). The main theorem states that if the conjugate partial sums of a Fourier series satisfy certain conditions, including being bounded by a function that approaches 0 as n approaches infinity, then the conjugate Fourier series is almost Norlund summable to the integral of the function at every point where the integral exists. The proof utilizes lemmas about the behavior of the conjugate partial sums and applies mean value theorems to show the necessary conditions are met. References to previous related works are also provided.
The document discusses the determination of diffusion constants in boronated powder metallurgy samples of the iron-carbon-copper system. Experiments were conducted on powdered samples with 0.1% carbon and 1-3% copper. The thickness of the boride layers formed after boronation at temperatures of 920-980°C were measured. The data was used to calculate the activation energy (Q) and pre-exponential factor (Do) based on parabolic growth curves. The results show that Q increases with sample density from 5.8 to 7 g/cm3. Adding up to 2% copper reduces Q values, but higher copper concentrations increase Q similar to pure iron samples.
This document compares various biometric methods for identification and verification. It discusses fingerprint recognition, face recognition, voice recognition, and iris recognition as some of the main biometric techniques. For each method, it describes how the biometric data is captured and analyzed, the advantages and disadvantages, and examples of applications where the technique can be used. The document provides an overview of the history of biometrics and the typical modules involved in a biometric system, such as sensors, feature extraction, matching, and template databases.
This document describes the design of a digital phase locked loop (PLL) with a divide by 4/5 prescaler. The digital PLL uses a digital phase frequency detector, time to digital converter, thermometric decoder, and digitally controlled oscillator. The proposed PLL design uses an accumulator type DCO and ring oscillator type TDC to achieve fast lock time and reduced jitter. The final system incorporates all the components to function as a digital PLL that locks when the reference and feedback frequencies match.
The document discusses energy efficient routing protocols for clustered wireless sensor networks. It provides an overview of wireless sensor networks and discusses how clustering is commonly used to improve energy efficiency and scalability. The document reviews several existing clustering-based routing protocols and analyzes their approaches for prolonging network lifetime by minimizing energy consumption in wireless sensor networks.
The document discusses bit error rate (BER) performance analysis of M-ary quadrature amplitude modulation (M-QAM) for implementation of orthogonal frequency-division multiplexing (OFDM). It analyzes the theoretical BER of M-QAM under different modulation orders and signal-to-noise ratios (SNR). The analysis shows that higher order M-QAM has higher BER than lower order M-QAM for the same SNR due to decreased symbol distances as the modulation order increases. It also discusses the use of M-QAM modulation in OFDM systems and outlines challenges in implementing higher order M-QAM for OFDM.
This document analyzes the groundwater quality of South Karaikal and Nagapattinam districts in Tamil Nadu, India. 14 groundwater samples were collected and analyzed for physicochemical parameters including major ions. Spatial variation maps were generated for parameters like calcium, chloride, sodium, and bicarbonate which showed high and low concentration regions. Piper and Durov plots indicated mixed temporary and permanent water hardness. Sodium absorption ratio values identified areas of excellent, good and fair water quality for irrigation. Overall, comparison to standards showed groundwater was not suitable for drinking in most areas.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Rainfall intensity duration frequency curve statistical analysis and modeling...bijceesjournal
Using data from 41 years in Patna’ India’ the study’s goal is to analyze the trends of how often it rains on a weekly, seasonal, and annual basis (1981−2020). First, utilizing the intensity-duration-frequency (IDF) curve and the relationship by statistically analyzing rainfall’ the historical rainfall data set for Patna’ India’ during a 41 year period (1981−2020), was evaluated for its quality. Changes in the hydrologic cycle as a result of increased greenhouse gas emissions are expected to induce variations in the intensity, length, and frequency of precipitation events. One strategy to lessen vulnerability is to quantify probable changes and adapt to them. Techniques such as log-normal, normal, and Gumbel are used (EV-I). Distributions were created with durations of 1, 2, 3, 6, and 24 h and return times of 2, 5, 10, 25, and 100 years. There were also mathematical correlations discovered between rainfall and recurrence interval.
Findings: Based on findings, the Gumbel approach produced the highest intensity values, whereas the other approaches produced values that were close to each other. The data indicates that 461.9 mm of rain fell during the monsoon season’s 301st week. However, it was found that the 29th week had the greatest average rainfall, 92.6 mm. With 952.6 mm on average, the monsoon season saw the highest rainfall. Calculations revealed that the yearly rainfall averaged 1171.1 mm. Using Weibull’s method, the study was subsequently expanded to examine rainfall distribution at different recurrence intervals of 2, 5, 10, and 25 years. Rainfall and recurrence interval mathematical correlations were also developed. Further regression analysis revealed that short wave irrigation, wind direction, wind speed, pressure, relative humidity, and temperature all had a substantial influence on rainfall.
Originality and value: The results of the rainfall IDF curves can provide useful information to policymakers in making appropriate decisions in managing and minimizing floods in the study area.
Gas agency management system project report.pdfKamal Acharya
The project entitled "Gas Agency" is done to make the manual process easier by making it a computerized system for billing and maintaining stock. The Gas Agencies get the order request through phone calls or by personal from their customers and deliver the gas cylinders to their address based on their demand and previous delivery date. This process is made computerized and the customer's name, address and stock details are stored in a database. Based on this the billing for a customer is made simple and easier, since a customer order for gas can be accepted only after completing a certain period from the previous delivery. This can be calculated and billed easily through this. There are two types of delivery like domestic purpose use delivery and commercial purpose use delivery. The bill rate and capacity differs for both. This can be easily maintained and charged accordingly.
Digital Twins Computer Networking Paper Presentation.pptxaryanpankaj78
A Digital Twin in computer networking is a virtual representation of a physical network, used to simulate, analyze, and optimize network performance and reliability. It leverages real-time data to enhance network management, predict issues, and improve decision-making processes.
Comparative analysis between traditional aquaponics and reconstructed aquapon...bijceesjournal
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Software Engineering and Project Management - Software Testing + Agile Method...Prakhyath Rai
Software Testing: A Strategic Approach to Software Testing, Strategic Issues, Test Strategies for Conventional Software, Test Strategies for Object -Oriented Software, Validation Testing, System Testing, The Art of Debugging.
Agile Methodology: Before Agile – Waterfall, Agile Development.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)