IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Enhance the Throughput of Wireless Network Using Multicast RoutingIOSR Journals
Wireless Mesh Network is designed static or limited mobility environment .In multicast routing for
wireless mesh networks has focused on metrics that estimate link quality to maximize throughput
andtoprovide secure communication. Nodes must collaborate in order to compute the path metric and
forward data.Node identify the novel attacks against high- throughput multicast protocols in wireless
mesh network.. The attacks exploit the local estimation and global aggregation of the metric to allow
attackers to attract a large amount of traffic These attacks are very effective b a s e d on high
throughput metrics. The aggressive path selection is a double-edged sword: It is maximizes throughput,
it also increases attack effectiveness. so Rate guard mechanism will be used.Rate guard mechanism
means combines Measurement-based detection and accusation-based reaction techniques.The attacks
and the defense using ODMRP, a representative multicast protocol for wireless mesh networks, and
SPP, an adaptation of the well-known ETX unicast metric to the multicast setting
The document discusses replica allocation techniques in mobile ad hoc networks to improve data accessibility in the presence of selfish nodes. It describes existing static and dynamic replica allocation methods, including Static Access Frequency, Dynamic Connectivity Based Grouping, and Dynamic Access Frequency and Neighborhood. It also proposes a Dynamic Connectivity Based Grouping method with selfish node detection to properly allocate replicas while accounting for selfish nodes. The goal is to maximize data accessibility, communication cost, and minimize query delay.
This document summarizes a research paper on an efficient geographic multicast protocol (EGMP) for mobile ad hoc networks (MANETs). EGMP uses a two-tier virtual zone-based structure to improve scalability. Zones are constructed based on location, and zone leaders manage local group membership and join/leave requests. EGMP builds a network-wide multicast tree through zone interconnections. Packet forwarding relies on geographic routing to determine next hops. Simulation results indicate EGMP's per-node overhead remains relatively constant with increasing network and group size, demonstrating its scalability. The objectives are to design a more scalable and reliable multicast protocol for dynamic MANETs.
PRIVACY ENHANCEMENT OF NODE IN OPPORTUNISTIC NETWORK BY USING VIRTUAL-IDijsc
An entrepreneurial system is one of the sort of remote system. Delay resistance system is correspondence
organizing proposition which empowers the correspondence in such a situation where end to end way
might never be exist. Message is forward on the premise of chance. Time interim to convey a message is
long we can't evaluate or anticipate the time until we get the message. There is a security issue in these
sorts of system. In this paper we will proposed another procedure which will expand the protection of the
system and build execution of the system.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
A Distributed Approach for Detecting Wormhole Attack in Wireless Network Codi...IRJET Journal
This document presents a distributed algorithm called DAWN to detect wormhole attacks in wireless network coding systems. The algorithm has two phases: 1) a detection phase where each node uses the expected transmission count (ETX) metric to detect if any attackers exist, and 2) a reporting phase where detected attackers are reported to other nodes. ETX represents the number of transmissions needed for a packet to be received and can reveal the network topology. DAWN examines the order nodes receive packets and their ETX values to identify attackers. It signatures reports to prevent manipulation and distributes the workload of detection across all nodes. The algorithm successfully detects wormhole attacks with high rates while imposing low computation and communication overhead.
Wireless sensor network consists of hundreds to thousands of nodes that communicate among themselves
using radio signals and any node can leave or join the network when required. In Wireless sensor network no
central controller is present. Sensor nodes deployed in the network are responsible for data routing in the network.
Wireless sensor network is used to monitor the environmental conditions such as temperature, pressure, humidity,
sound, noise etc. Wireless Sensor nodes have very small size and have limited resources. In far places, it is very
difficult to recharge or replace the battery of the sensor nodes. In such conditions, focus is to reduce the battery
consumption of the sensor nodes. In this work, a new technique is proposed to enable efficient battery
consumption in a multicasting routing protocol. In this technique, the cluster heads are selected on the basis of
dynamic clustering using neural network. Simulation results show that the proposed technique is more reliable,
energy efficient and provide better results as compared to the existing technique.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Enhance the Throughput of Wireless Network Using Multicast RoutingIOSR Journals
Wireless Mesh Network is designed static or limited mobility environment .In multicast routing for
wireless mesh networks has focused on metrics that estimate link quality to maximize throughput
andtoprovide secure communication. Nodes must collaborate in order to compute the path metric and
forward data.Node identify the novel attacks against high- throughput multicast protocols in wireless
mesh network.. The attacks exploit the local estimation and global aggregation of the metric to allow
attackers to attract a large amount of traffic These attacks are very effective b a s e d on high
throughput metrics. The aggressive path selection is a double-edged sword: It is maximizes throughput,
it also increases attack effectiveness. so Rate guard mechanism will be used.Rate guard mechanism
means combines Measurement-based detection and accusation-based reaction techniques.The attacks
and the defense using ODMRP, a representative multicast protocol for wireless mesh networks, and
SPP, an adaptation of the well-known ETX unicast metric to the multicast setting
The document discusses replica allocation techniques in mobile ad hoc networks to improve data accessibility in the presence of selfish nodes. It describes existing static and dynamic replica allocation methods, including Static Access Frequency, Dynamic Connectivity Based Grouping, and Dynamic Access Frequency and Neighborhood. It also proposes a Dynamic Connectivity Based Grouping method with selfish node detection to properly allocate replicas while accounting for selfish nodes. The goal is to maximize data accessibility, communication cost, and minimize query delay.
This document summarizes a research paper on an efficient geographic multicast protocol (EGMP) for mobile ad hoc networks (MANETs). EGMP uses a two-tier virtual zone-based structure to improve scalability. Zones are constructed based on location, and zone leaders manage local group membership and join/leave requests. EGMP builds a network-wide multicast tree through zone interconnections. Packet forwarding relies on geographic routing to determine next hops. Simulation results indicate EGMP's per-node overhead remains relatively constant with increasing network and group size, demonstrating its scalability. The objectives are to design a more scalable and reliable multicast protocol for dynamic MANETs.
PRIVACY ENHANCEMENT OF NODE IN OPPORTUNISTIC NETWORK BY USING VIRTUAL-IDijsc
An entrepreneurial system is one of the sort of remote system. Delay resistance system is correspondence
organizing proposition which empowers the correspondence in such a situation where end to end way
might never be exist. Message is forward on the premise of chance. Time interim to convey a message is
long we can't evaluate or anticipate the time until we get the message. There is a security issue in these
sorts of system. In this paper we will proposed another procedure which will expand the protection of the
system and build execution of the system.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
A Distributed Approach for Detecting Wormhole Attack in Wireless Network Codi...IRJET Journal
This document presents a distributed algorithm called DAWN to detect wormhole attacks in wireless network coding systems. The algorithm has two phases: 1) a detection phase where each node uses the expected transmission count (ETX) metric to detect if any attackers exist, and 2) a reporting phase where detected attackers are reported to other nodes. ETX represents the number of transmissions needed for a packet to be received and can reveal the network topology. DAWN examines the order nodes receive packets and their ETX values to identify attackers. It signatures reports to prevent manipulation and distributes the workload of detection across all nodes. The algorithm successfully detects wormhole attacks with high rates while imposing low computation and communication overhead.
Wireless sensor network consists of hundreds to thousands of nodes that communicate among themselves
using radio signals and any node can leave or join the network when required. In Wireless sensor network no
central controller is present. Sensor nodes deployed in the network are responsible for data routing in the network.
Wireless sensor network is used to monitor the environmental conditions such as temperature, pressure, humidity,
sound, noise etc. Wireless Sensor nodes have very small size and have limited resources. In far places, it is very
difficult to recharge or replace the battery of the sensor nodes. In such conditions, focus is to reduce the battery
consumption of the sensor nodes. In this work, a new technique is proposed to enable efficient battery
consumption in a multicasting routing protocol. In this technique, the cluster heads are selected on the basis of
dynamic clustering using neural network. Simulation results show that the proposed technique is more reliable,
energy efficient and provide better results as compared to the existing technique.
Characterization of directed diffusion protocol in wireless sensor networkijwmn
Wireless sensor network (WSN) has enormous applications in many places for monitoring the environments
of importance. Sensor nodes are capable of sensing, computing, and communicating. These sensor nodes
are energy constraint and operated by batteries. Since energy consumption is an important issue of WSN,
there have been many energy-efficient protocols proposed for the WSN. Directed diffusion (DD) is a datacentric
protocol that focuses on the energy efficiency of the networks. Since the first proposal of DD
protocol by Deborah, there have been various versions of DD protocols proposed by many scientists across
the globe. These upgraded versions of DD protocols add on various features to the original DD protocol
such as energy, scalability, network lifetime, security, reliability, and mobility. In this paper, we discuss
and classify various characteristics of themost populardirected diffusion protocols that have been proposed
over couple of years.
A Novel Approach To Detect Trustworthy Nodes Using Audit Based Scheme For WSNIJERDJOURNAL
ABSTRACT: In multi-hop ad hoc networks there exists a problem of identifying and isolating misbehaving nodes which refuses to forward packets. Audit-based Misbehavior Detection (AMD) is a comprehensive system that effectively and efficiently isolates both continuous and selective packet droppers. The AMD system integrates reputation management, trustworthy route discovery, and identification of misbehaving nodes based on behavioral audits. Compared to previous methods, AMD evaluates node behavior on a per-packet basis, without employing energy-expensive overhearing techniques or intensive acknowledgment schemes. Moreover, AMD can detect selective dropping attacks even if end-to-end traffic is encrypted and can be applied to multichannel networks or networks consisting of nodes with directional antennas. This work implements the AMD approach by considering the rushing attack. The analysis of the results confirms that AMD based method with rushing attack performs better as compared to the non rushing attack.
Maximizing P2P File Access Availability in Mobile Ad Hoc Networks though Repl...1crore projects
IEEE PROJECTS 2015
1 crore projects is a leading Guide for ieee Projects and real time projects Works Provider.
It has been provided Lot of Guidance for Thousands of Students & made them more beneficial in all Technology Training.
Dot Net
DOTNET Project Domain list 2015
1. IEEE based on datamining and knowledge engineering
2. IEEE based on mobile computing
3. IEEE based on networking
4. IEEE based on Image processing
5. IEEE based on Multimedia
6. IEEE based on Network security
7. IEEE based on parallel and distributed systems
Java Project Domain list 2015
1. IEEE based on datamining and knowledge engineering
2. IEEE based on mobile computing
3. IEEE based on networking
4. IEEE based on Image processing
5. IEEE based on Multimedia
6. IEEE based on Network security
7. IEEE based on parallel and distributed systems
ECE IEEE Projects 2015
1. Matlab project
2. Ns2 project
3. Embedded project
4. Robotics project
Eligibility
Final Year students of
1. BSc (C.S)
2. BCA/B.E(C.S)
3. B.Tech IT
4. BE (C.S)
5. MSc (C.S)
6. MSc (IT)
7. MCA
8. MS (IT)
9. ME(ALL)
10. BE(ECE)(EEE)(E&I)
TECHNOLOGY USED AND FOR TRAINING IN
1. DOT NET
2. C sharp
3. ASP
4. VB
5. SQL SERVER
6. JAVA
7. J2EE
8. STRINGS
9. ORACLE
10. VB dotNET
11. EMBEDDED
12. MAT LAB
13. LAB VIEW
14. Multi Sim
CONTACT US
1 CRORE PROJECTS
Door No: 214/215,2nd Floor,
No. 172, Raahat Plaza, (Shopping Mall) ,Arcot Road, Vadapalani, Chennai,
Tamin Nadu, INDIA - 600 026
Email id: 1croreprojects@gmail.com
website:1croreprojects.com
Phone : +91 97518 00789 / +91 72999 51536
International Journal of Engineering and Science Invention (IJESI) inventionjournals
This document summarizes a research paper that proposes a scheme to protect the location privacy of source nodes in wireless sensor networks against hotspot-locating attacks. The scheme creates an irregularly shaped "cloud" of fake traffic around the real source node to camouflage its location. Cryptographic techniques are used to change packet appearances at each hop. This prevents packet correlation and makes the source node indistinguishable. Simulations show the scheme provides stronger privacy than routing-based schemes while requiring less energy than global-adversary schemes. The proposed neighbor discovery distance algorithm aims to find the minimum traffic path to efficiently transmit data without loss.
Defending against collaborative attacks byranjith kumar
Dear Student,
DREAMWEB TECHNO SOLUTIONS is one of the Hardware Training and Software Development centre available in
Trichy. Pioneer in corporate training, DREAMWEB TECHNO SOLUTIONS provides training in all software
development and IT-related courses, such as Embedded Systems, VLSI, MATLAB, JAVA, J2EE, CIVIL,
Power Electronics, and Power Systems. It’s certified and experienced faculty members have the
competence to train students, provide consultancy to organizations, and develop strategic
solutions for clients by integrating existing and emerging technologies.
ADD: No:73/5, 3rd Floor, Sri Kamatchi Complex, Opp City Hospital, Salai Road, Trichy-18
Contact @ 7200021403/04
phone: 0431-4050403
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
JPN1422 Defending Against Collaborative Attacks by Malicious Nodes in MANETs...chennaijp
Get the latest IEEE ns2 projects in JP INFOTECH; we are having following category wise projects like Industrial Informatics, Vehicular Technology, Networking, WSN and Manet.
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/ns2-projects/
An efficient hybrid peer to-peersystemfordistributeddatasharingambitlick
The document proposes a hybrid peer-to-peer system that combines the advantages of structured and unstructured networks. It consists of two parts: 1) a structured core network that forms the backbone and provides efficient data lookup; 2) multiple unstructured networks attached to each core node, allowing flexible peer joining/leaving. This two-tier design decouples efficiency and flexibility. Simulation results show the hybrid system balances these properties better than single-approach networks.
The document discusses efficient routing techniques for intermittently connected mobile networks (ICMNs). It begins by introducing ICMNs and the challenges of routing in such networks where end-to-end paths may not always exist. It then summarizes various routing approaches including flooding-based epidemic routing and single-copy schemes. The document proposes two spray-based routing techniques: (1) Spray and Wait, which sprays a fixed number of message copies and waits for a copy to reach the destination, and (2) Spray and Focus, which uses utility-based routing to focus copies towards the destination after the spray phase. Expected delays are analyzed for Spray and Wait. Different mobility models for analysis are also discussed.
Secure and distributed data discovery and dissemination in wireless sensor ne...Pvrtechnologies Nellore
This document proposes a secure and distributed data discovery and dissemination protocol for wireless sensor networks called DiDrip. It addresses limitations of existing centralized protocols by allowing multiple authorized users and network owners to directly disseminate data items to sensor nodes. DiDrip provides authenticity and integrity of data items through digital signatures combined with efficient data structures. It aims to be scalable, resilient to node compromise and user collusion, and impose low overhead on resource-limited sensor nodes. The paper analyzes the security properties of DiDrip and implements it on an experimental sensor network to demonstrate its efficiency in practice.
This document summarizes a research paper on reducing packet loss in mobile ad hoc networks (MANETs). The paper discusses how MANETs are vulnerable to various security threats like black hole attacks that can cause packet dropping. It evaluates existing authentication schemes like ACK-based schemes that have overhead issues. The paper then proposes a modified ACK-based scheme using finite state automata to overcome decision ambiguity and minimize packet dropping while authenticating nodes in the MANET. Simulation results show that the proposed approach improves packet delivery ratio, throughput and reduces routing load compared to not using secure authentication.
CLUSTER BASED FIDELITY TO SECURE DSDV PROTOCOL AGAINST BLACK HOLE ATTACKSpijans
In this paper, we introduce and discuss an approach that will be used to secure the DSDV routing protocol in an ad-hoc network. Due to mobility and absence of infrastructure, nodes are more vulnerable to several malicious attacks. The secure routing is essential to transmit packets from source to the destination. Our approach consists to model and manage fidelity concept in an ad-hoc clustering architecture. Clustering makes it possible to group the mobile nodes and to send data simultaneously to the each group. Our security model thus aims to integrate mechanisms against black hole attacks, forcing cooperation between nodes and detecting failing behaviors. The nodes present in the clusters will work more efficiently and the message passing within the nodes will also get more authenticated from the cluster heads. The simulation of our proposed algorithm is carried out using NS2 network simulator by evaluating some network performances such as average delay, throughput of communication and packets loss.
Behavioral Model to Detect Anomalous Attacks in Packet TransmissionIOSR Journals
This document summarizes a proposed behavioral model to detect anomalous attacks in packet transmission in wireless networks. The model aims to identify packet droppers and modifiers by having nodes monitor their neighbors' forwarding behaviors over time. A tree-based routing structure is used, where each packet is marked as it travels toward the sink node. The marks provide information to help the sink node determine which nodes are misbehaving. The proposed scheme aims to gradually identify bad nodes through statistical analysis of their behaviors across different network topologies over time, with low false positives. It aims to catch both packet droppers and modifiers within a single detection module.
This document proposes a Tiered Authentication scheme called TAM for multicast traffic in ad-hoc networks. TAM exploits network clustering to reduce overhead and ensure scalability. Within a cluster, one-way hash chains authenticate message sources by appending an authentication code to messages. Between clusters, messages include multiple authentication codes based on different keys from the source to authenticate it. TAM aims to securely deliver multicast traffic while addressing challenges like resource constraints and packet loss in ad-hoc networks.
Effective Path Identification Protocol for Wireless Mesh NetworksIDES Editor
Wireless Mesh Networks (WMNs) have emerged as
a key technology for next-generation wireless networking.
Routing is a key factor for transfer of packets from source to
destination. SrcRR is widely used protocol for transferring
packets from source to destination. This protocol often uses
Dijkstra’s algorithm on its link state database to find the next
alternative path to the destination when ever the ETX metric
of the link changes.This is a time consuming process if the
ETX metric of the links are changing frequently. So this paper
eliminates the use of Dijkistra’s algorithm and uses the a
search operation for finding the best paths.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This document summarizes a research paper that analyzes the linear growth rate of perturbations in magneto-thermal convection of a couple-stress fluid in a porous medium. The authors establish that the growth rate of oscillatory perturbations must lie within a semi-circle in the right half of the complex plane. This region is bounded based on material properties like permeability, porosity, thermal and magnetic Prandtl numbers. The results provide upper limits to the growth rate for any combination of perfectly conducting free and rigid boundaries, without requiring exact solutions.
This document discusses built-in self-test (BIST) techniques for testing field programmable gate arrays (FPGAs). It describes how the FPGA can be configured with BIST logic during offline testing to test the programmable logic blocks and interconnects. For online testing, the FPGA can be configured as a processor with an arithmetic logic unit (ALU) that has a BIST feature. The design implements a reduced instruction set computer (RISC) architecture on the FPGA with the ALU and is verified through simulation. BIST allows exhaustive testing of the FPGA at operating speed without external test equipment.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
The document analyzes supersonic flow through conical rocket nozzles using computational fluid dynamics (CFD). It discusses nozzle design and simulations conducted at divergence angles of 7, 20, and 30 degrees. The results show variations in parameters like Mach number, pressure, temperature, and turbulence intensity across the different configurations. Mach number increases from subsonic to supersonic values through the nozzle, while pressure decreases rapidly after the throat. Higher divergence angles produce higher exit Mach numbers but more over-expansion.
This document summarizes a study on wall pressure distribution in a suddenly expanded flow for an area ratio of 2.56. Experiments were conducted by attaching an enlarged duct to the exit of an axisymmetric convergent-divergent nozzle. Wall pressure was measured for nozzle pressure ratios of 3-11 and Mach numbers of 1.87, 2.2, and 2.58. Microjets were used as an active control method to study their effect on wall pressure distribution. Results showed that microjets did not adversely affect the oscillatory wall pressure field for most conditions tested. At Mach 2.58 and NPR of 9, microjets significantly increased the reattachment length in the duct. In general, microjets were found
Characterization of directed diffusion protocol in wireless sensor networkijwmn
Wireless sensor network (WSN) has enormous applications in many places for monitoring the environments
of importance. Sensor nodes are capable of sensing, computing, and communicating. These sensor nodes
are energy constraint and operated by batteries. Since energy consumption is an important issue of WSN,
there have been many energy-efficient protocols proposed for the WSN. Directed diffusion (DD) is a datacentric
protocol that focuses on the energy efficiency of the networks. Since the first proposal of DD
protocol by Deborah, there have been various versions of DD protocols proposed by many scientists across
the globe. These upgraded versions of DD protocols add on various features to the original DD protocol
such as energy, scalability, network lifetime, security, reliability, and mobility. In this paper, we discuss
and classify various characteristics of themost populardirected diffusion protocols that have been proposed
over couple of years.
A Novel Approach To Detect Trustworthy Nodes Using Audit Based Scheme For WSNIJERDJOURNAL
ABSTRACT: In multi-hop ad hoc networks there exists a problem of identifying and isolating misbehaving nodes which refuses to forward packets. Audit-based Misbehavior Detection (AMD) is a comprehensive system that effectively and efficiently isolates both continuous and selective packet droppers. The AMD system integrates reputation management, trustworthy route discovery, and identification of misbehaving nodes based on behavioral audits. Compared to previous methods, AMD evaluates node behavior on a per-packet basis, without employing energy-expensive overhearing techniques or intensive acknowledgment schemes. Moreover, AMD can detect selective dropping attacks even if end-to-end traffic is encrypted and can be applied to multichannel networks or networks consisting of nodes with directional antennas. This work implements the AMD approach by considering the rushing attack. The analysis of the results confirms that AMD based method with rushing attack performs better as compared to the non rushing attack.
Maximizing P2P File Access Availability in Mobile Ad Hoc Networks though Repl...1crore projects
IEEE PROJECTS 2015
1 crore projects is a leading Guide for ieee Projects and real time projects Works Provider.
It has been provided Lot of Guidance for Thousands of Students & made them more beneficial in all Technology Training.
Dot Net
DOTNET Project Domain list 2015
1. IEEE based on datamining and knowledge engineering
2. IEEE based on mobile computing
3. IEEE based on networking
4. IEEE based on Image processing
5. IEEE based on Multimedia
6. IEEE based on Network security
7. IEEE based on parallel and distributed systems
Java Project Domain list 2015
1. IEEE based on datamining and knowledge engineering
2. IEEE based on mobile computing
3. IEEE based on networking
4. IEEE based on Image processing
5. IEEE based on Multimedia
6. IEEE based on Network security
7. IEEE based on parallel and distributed systems
ECE IEEE Projects 2015
1. Matlab project
2. Ns2 project
3. Embedded project
4. Robotics project
Eligibility
Final Year students of
1. BSc (C.S)
2. BCA/B.E(C.S)
3. B.Tech IT
4. BE (C.S)
5. MSc (C.S)
6. MSc (IT)
7. MCA
8. MS (IT)
9. ME(ALL)
10. BE(ECE)(EEE)(E&I)
TECHNOLOGY USED AND FOR TRAINING IN
1. DOT NET
2. C sharp
3. ASP
4. VB
5. SQL SERVER
6. JAVA
7. J2EE
8. STRINGS
9. ORACLE
10. VB dotNET
11. EMBEDDED
12. MAT LAB
13. LAB VIEW
14. Multi Sim
CONTACT US
1 CRORE PROJECTS
Door No: 214/215,2nd Floor,
No. 172, Raahat Plaza, (Shopping Mall) ,Arcot Road, Vadapalani, Chennai,
Tamin Nadu, INDIA - 600 026
Email id: 1croreprojects@gmail.com
website:1croreprojects.com
Phone : +91 97518 00789 / +91 72999 51536
International Journal of Engineering and Science Invention (IJESI) inventionjournals
This document summarizes a research paper that proposes a scheme to protect the location privacy of source nodes in wireless sensor networks against hotspot-locating attacks. The scheme creates an irregularly shaped "cloud" of fake traffic around the real source node to camouflage its location. Cryptographic techniques are used to change packet appearances at each hop. This prevents packet correlation and makes the source node indistinguishable. Simulations show the scheme provides stronger privacy than routing-based schemes while requiring less energy than global-adversary schemes. The proposed neighbor discovery distance algorithm aims to find the minimum traffic path to efficiently transmit data without loss.
Defending against collaborative attacks byranjith kumar
Dear Student,
DREAMWEB TECHNO SOLUTIONS is one of the Hardware Training and Software Development centre available in
Trichy. Pioneer in corporate training, DREAMWEB TECHNO SOLUTIONS provides training in all software
development and IT-related courses, such as Embedded Systems, VLSI, MATLAB, JAVA, J2EE, CIVIL,
Power Electronics, and Power Systems. It’s certified and experienced faculty members have the
competence to train students, provide consultancy to organizations, and develop strategic
solutions for clients by integrating existing and emerging technologies.
ADD: No:73/5, 3rd Floor, Sri Kamatchi Complex, Opp City Hospital, Salai Road, Trichy-18
Contact @ 7200021403/04
phone: 0431-4050403
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
JPN1422 Defending Against Collaborative Attacks by Malicious Nodes in MANETs...chennaijp
Get the latest IEEE ns2 projects in JP INFOTECH; we are having following category wise projects like Industrial Informatics, Vehicular Technology, Networking, WSN and Manet.
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/ns2-projects/
An efficient hybrid peer to-peersystemfordistributeddatasharingambitlick
The document proposes a hybrid peer-to-peer system that combines the advantages of structured and unstructured networks. It consists of two parts: 1) a structured core network that forms the backbone and provides efficient data lookup; 2) multiple unstructured networks attached to each core node, allowing flexible peer joining/leaving. This two-tier design decouples efficiency and flexibility. Simulation results show the hybrid system balances these properties better than single-approach networks.
The document discusses efficient routing techniques for intermittently connected mobile networks (ICMNs). It begins by introducing ICMNs and the challenges of routing in such networks where end-to-end paths may not always exist. It then summarizes various routing approaches including flooding-based epidemic routing and single-copy schemes. The document proposes two spray-based routing techniques: (1) Spray and Wait, which sprays a fixed number of message copies and waits for a copy to reach the destination, and (2) Spray and Focus, which uses utility-based routing to focus copies towards the destination after the spray phase. Expected delays are analyzed for Spray and Wait. Different mobility models for analysis are also discussed.
Secure and distributed data discovery and dissemination in wireless sensor ne...Pvrtechnologies Nellore
This document proposes a secure and distributed data discovery and dissemination protocol for wireless sensor networks called DiDrip. It addresses limitations of existing centralized protocols by allowing multiple authorized users and network owners to directly disseminate data items to sensor nodes. DiDrip provides authenticity and integrity of data items through digital signatures combined with efficient data structures. It aims to be scalable, resilient to node compromise and user collusion, and impose low overhead on resource-limited sensor nodes. The paper analyzes the security properties of DiDrip and implements it on an experimental sensor network to demonstrate its efficiency in practice.
This document summarizes a research paper on reducing packet loss in mobile ad hoc networks (MANETs). The paper discusses how MANETs are vulnerable to various security threats like black hole attacks that can cause packet dropping. It evaluates existing authentication schemes like ACK-based schemes that have overhead issues. The paper then proposes a modified ACK-based scheme using finite state automata to overcome decision ambiguity and minimize packet dropping while authenticating nodes in the MANET. Simulation results show that the proposed approach improves packet delivery ratio, throughput and reduces routing load compared to not using secure authentication.
CLUSTER BASED FIDELITY TO SECURE DSDV PROTOCOL AGAINST BLACK HOLE ATTACKSpijans
In this paper, we introduce and discuss an approach that will be used to secure the DSDV routing protocol in an ad-hoc network. Due to mobility and absence of infrastructure, nodes are more vulnerable to several malicious attacks. The secure routing is essential to transmit packets from source to the destination. Our approach consists to model and manage fidelity concept in an ad-hoc clustering architecture. Clustering makes it possible to group the mobile nodes and to send data simultaneously to the each group. Our security model thus aims to integrate mechanisms against black hole attacks, forcing cooperation between nodes and detecting failing behaviors. The nodes present in the clusters will work more efficiently and the message passing within the nodes will also get more authenticated from the cluster heads. The simulation of our proposed algorithm is carried out using NS2 network simulator by evaluating some network performances such as average delay, throughput of communication and packets loss.
Behavioral Model to Detect Anomalous Attacks in Packet TransmissionIOSR Journals
This document summarizes a proposed behavioral model to detect anomalous attacks in packet transmission in wireless networks. The model aims to identify packet droppers and modifiers by having nodes monitor their neighbors' forwarding behaviors over time. A tree-based routing structure is used, where each packet is marked as it travels toward the sink node. The marks provide information to help the sink node determine which nodes are misbehaving. The proposed scheme aims to gradually identify bad nodes through statistical analysis of their behaviors across different network topologies over time, with low false positives. It aims to catch both packet droppers and modifiers within a single detection module.
This document proposes a Tiered Authentication scheme called TAM for multicast traffic in ad-hoc networks. TAM exploits network clustering to reduce overhead and ensure scalability. Within a cluster, one-way hash chains authenticate message sources by appending an authentication code to messages. Between clusters, messages include multiple authentication codes based on different keys from the source to authenticate it. TAM aims to securely deliver multicast traffic while addressing challenges like resource constraints and packet loss in ad-hoc networks.
Effective Path Identification Protocol for Wireless Mesh NetworksIDES Editor
Wireless Mesh Networks (WMNs) have emerged as
a key technology for next-generation wireless networking.
Routing is a key factor for transfer of packets from source to
destination. SrcRR is widely used protocol for transferring
packets from source to destination. This protocol often uses
Dijkstra’s algorithm on its link state database to find the next
alternative path to the destination when ever the ETX metric
of the link changes.This is a time consuming process if the
ETX metric of the links are changing frequently. So this paper
eliminates the use of Dijkistra’s algorithm and uses the a
search operation for finding the best paths.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This document summarizes a research paper that analyzes the linear growth rate of perturbations in magneto-thermal convection of a couple-stress fluid in a porous medium. The authors establish that the growth rate of oscillatory perturbations must lie within a semi-circle in the right half of the complex plane. This region is bounded based on material properties like permeability, porosity, thermal and magnetic Prandtl numbers. The results provide upper limits to the growth rate for any combination of perfectly conducting free and rigid boundaries, without requiring exact solutions.
This document discusses built-in self-test (BIST) techniques for testing field programmable gate arrays (FPGAs). It describes how the FPGA can be configured with BIST logic during offline testing to test the programmable logic blocks and interconnects. For online testing, the FPGA can be configured as a processor with an arithmetic logic unit (ALU) that has a BIST feature. The design implements a reduced instruction set computer (RISC) architecture on the FPGA with the ALU and is verified through simulation. BIST allows exhaustive testing of the FPGA at operating speed without external test equipment.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
The document analyzes supersonic flow through conical rocket nozzles using computational fluid dynamics (CFD). It discusses nozzle design and simulations conducted at divergence angles of 7, 20, and 30 degrees. The results show variations in parameters like Mach number, pressure, temperature, and turbulence intensity across the different configurations. Mach number increases from subsonic to supersonic values through the nozzle, while pressure decreases rapidly after the throat. Higher divergence angles produce higher exit Mach numbers but more over-expansion.
This document summarizes a study on wall pressure distribution in a suddenly expanded flow for an area ratio of 2.56. Experiments were conducted by attaching an enlarged duct to the exit of an axisymmetric convergent-divergent nozzle. Wall pressure was measured for nozzle pressure ratios of 3-11 and Mach numbers of 1.87, 2.2, and 2.58. Microjets were used as an active control method to study their effect on wall pressure distribution. Results showed that microjets did not adversely affect the oscillatory wall pressure field for most conditions tested. At Mach 2.58 and NPR of 9, microjets significantly increased the reattachment length in the duct. In general, microjets were found
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This document summarizes a study estimating and mapping evapotranspiration in the Kolondièba-Tiendaga basin in Mali from 2003 to 2010 using the SEBS (Surface Energy Balance System) model and AATSR satellite imagery. The study finds a strong correlation between evapotranspiration and evaporative fraction from 2003 to 2008, with correlation coefficients between 0.60 and 0.90, but lower correlations (0.34 to 0.40) in 2009-2010. Evapotranspiration values ranged from 1 to 3mm/J-1. The results indicate the potential of using remote sensing to estimate evapotranspiration over large areas.
This document summarizes a study on deconvoluting the flood hydrograph at the outlet of the Kolondieba watershed in Mali to understand the runoff process. Monitoring of physicochemical parameters was conducted from 2009-2011 at rainfall, surface water, and groundwater sites. Analysis using electrical conductivity and total dissolved solids as tracers showed runoff was composed of 77% rapid flow from rainfall and 23% delayed flow from shallow aquifers during 2010's wet season. In 2011, rapid flow increased 3% as shallow aquifer discharge declined 6.8% due to lower rainfall. The study found groundwater contributes little to hydrologic balance at the outlet, and surface runoff from rainfall heavily influenced by degraded land
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This document summarizes a study characterizing a landfill in Mohammedia, Morocco. Samples were taken from 5 stations around the landfill and near the El Maleh river to analyze physical and chemical properties. Heavy metals like lead and chromium were found in high concentrations in leachates from the landfill and sediments near the river. Pollution from the landfill's discharge was impacting the river water quality. The aim was to evaluate the physico-chemical quality of El Maleh river water in relation to leachate from the converted clay quarry landfill and identify a rehabilitation plan.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
The document summarizes the municipal solid waste management scenario of Kakinada City, India. Some key points:
- Kakinada city generates around 260 metric tons of solid waste per day from its population of over 300,000 people.
- Currently, solid waste is collected and transported to an open dumping site where it is disposed of indiscriminately without any processing.
- Proper waste management systems like segregation, transportation, treatment and disposal as outlined in India's solid waste management rules have not been fully implemented.
- Increasing population is leading to more waste generation but inadequate infrastructure and management, posing environmental and health problems.
Este documento propone varias medidas para garantizar el derecho a la vivienda desde un ayuntamiento de izquierdas, incluyendo potenciar una oficina antidesahucios, crear comisiones antidesahucio en los barrios, modificar impuestos para que las entidades financieras paguen en caso de dación en pago, evitar desahucios en viviendas públicas, crear un censo de viviendas vacías y promover ayudas al alquiler.
O documento discute conceitos de colisão no Unity 3D, incluindo tipos de colisores, componentes de colisão, tratamento de colisão com scripts e ray casting. Também aborda triggers e como ignorar colisões entre objetos específicos.
El documento describe un proyecto de aprendizaje centrado en la investigación-acción que involucra a maestros, estudiantes y la comunidad. El proyecto busca desarrollar habilidades a través de actividades significativas que permitan a los estudiantes crear un proyecto de vida y fortalecer conocimientos básicos. El proyecto evalúa los aprendizajes de los estudiantes a través de producciones escritas y orales.
El documento describe los componentes de un proyecto de aprendizaje centrado en la investigación-acción para desarrollar habilidades en los estudiantes. El proyecto involucra a maestros, estudiantes y familias y se enfoca en temas como valores, sistema de numeración y el desarrollo de un proyecto de vida para los estudiantes. El proyecto será evaluado mediante observaciones, exposiciones y pruebas escritas y orales para medir el progreso de los estudiantes.
This document discusses the Address Resolution Protocol (ARP) and its use in intrusion detection systems. It proposes a standardized 64-byte ARP protocol structure to more easily capture ARP packets from a network. The structure includes fields for frame information, destination and source addresses, ARP type details, and sender/target MAC and IP addresses. This standardized structure could be integrated into network monitoring to help detect intrusions without affecting normal data transfer processes. Overall, the document aims to optimize the ARP sequence for use in intrusion detection systems.
This document summarizes the CoQUOS approach for maintaining consistency of continuous queries in unstructured peer-to-peer networks. CoQUOS is a lightweight middleware that supports registering long-standing queries and notifying peers when new matching content appears. It uses cluster-resilient random walks and dynamic probability-based query registration. The consistency maintenance mechanism ensures timely updates and avoids unnecessary replication by adaptively polling replicas based on query and update rates. Evaluation shows CoQUOS achieves high consistency efficiency at low cost.
The document proposes a query registration and processing system for unstructured peer-to-peer networks. The system addresses limitations of traditional ad hoc query models which only support queries for currently available data and cannot retrieve data added later. The proposed system registers queries for unavailable data with "beacon" nodes, and notifies queryers when matching data becomes available. It also utilizes a "split and merge" technique to distribute file chunks to clients for maximum throughput during downloads. Experimental results show improved search times and throughput utilization compared to methods without query registration or optimized distribution.
This document summarizes three routing strategies - Cluster and Chain Based (CCB), Transmission Ranges and Chain Based (TRCB), and GRAdient Broadcast (GRAB) - proposed for wireless sensor networks to improve energy efficiency. CCB uses both clustering from LEACH and chain formation from PEGASIS to transmit sensor data to the base station. TRCB uses transmission ranges and distances to transmit sensor data within clusters to heads, which then form chains to the base station. GRAB builds and maintains a cost field to efficiently transmit data along descending costs towards the base station along multiple paths. Simulation results show GRAB performs better than CCB and TRCB in terms of network lifetime.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
SECURITY CONSIDERATION IN PEER-TO-PEER NETWORKS WITH A CASE STUDY APPLICATIONIJNSA Journal
Peer-to-Peer (P2P) overlay networks wide adoption has also created vast dangers due to the millions of users who are not conversant with the potential security risks. Lack of centralized control creates great risks to the P2P systems. This is mainly due to the inability to implement proper authentication approaches for threat management. The best possible solutions, however, include encryption, utilization of administration, implementing cryptographic protocols, avoiding personal file sharing, and unauthorized downloads. Recently a new non-DHT based structured P2P system is very suitable for designing secured communication protocols. This approach is based on Linear Diophantine Equation (LDE) [1]. The P2P architectures based on this protocol offer simplified methods to integrate symmetric and asymmetric cryptographies’ solutions into the P2P architecture with no need of utilizing Transport Layer Security (TLS), and its predecessor, Secure Sockets Layer (SSL) protocols.
Flexible bloom for searching textual contentUvaraj Shan
This document describes BloomCast, a system that uses Bloom filters to encode document content and replicate it across peers in an unstructured peer-to-peer (P2P) network. BloomCast aims to achieve high recall for search queries at low communication cost. It hybridizes a lightweight distributed hash table (DHT) with the P2P overlay to enable random node sampling and network size estimation. The DHT helps meet two constraints: query and document replicas are randomly distributed across the network, and peers know the network size. By uniformly replicating content across the network, BloomCast can guarantee search recall. It utilizes Bloom filters to compress document replicas and reduce replication costs.
Flexible bloom for searching textual contentUvaraj Shan
This document presents the BloomCast scheme for efficient full-text retrieval in unstructured peer-to-peer networks. BloomCast replicates document content across the network in the form of Bloom filters to reduce communication costs while still guaranteeing recall. It hybridizes a lightweight distributed hash table with the unstructured overlay to support random node sampling and network size estimation. Queries are evaluated based on Bloom filter membership verification to support full-text searches with the potential for false positives but no false negatives. The system aims to provide efficient and effective full-text retrieval in unstructured P2P networks.
Analyse the performance of mobile peer to Peer network using ant colony optim...IJCI JOURNAL
The document describes analyzing the performance of a mobile peer-to-peer network using ant colony optimization. It proposes using a distributed spanning tree (DST) structure to improve efficiency by reducing the large number of messages. The DST is optimized using ant colony optimization to give an optimal solution. Simulation results show the approach reduces the number of messages, average delay, and increases packet delivery ratio in the network.
Study on security and quality of service implementations in p2 p overlay netw...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
ANALYSE THE PERFORMANCE OF MOBILE PEER TO PEER NETWORK USING ANT COLONY OPTIM...ijcsity
A mobile peer-to-peer computer network is the one in which each computer in the network can act as a
client or server for the other computers in the network. The communication process among the nodes in the
mobile peer to peer network requires more no of messages. Due to this large number of messages passing,
propose an interconnection structure called distributed Spanning Tree (DST) and it improves the efficiency
of the mobile peer to peer network. The proposed method improves the data availability and consistency
across the entire network and also reduces the data latency and the required number of message passes for
any specific application in the network. Further to enhance the effectiveness of the proposed system, the
DST network is optimized with the Ant Colony Optimization method. It gives the optimal solution of the
DST method and increased availability, enhanced consistency and scalability of the network. The
simulation results shows that reduces the number of message sent for any specific application and average
delay and increases the packet delivery ratio in the network.
This paper presents a new receiver-initiated multicast algorithm called Robber for distributing large amounts of data from one cluster to multiple other clusters in grid computing environments. Robber is inspired by BitTorrent but is designed specifically for cluster grids. It uses a cooperative approach where nodes in the same cluster work together to efficiently retrieve data from peer clusters. Unlike static load balancing approaches, Robber dynamically adapts the workload of each node based on its relative performance within a cooperative. This avoids slower nodes from degrading overall throughput. The paper evaluates Robber experimentally and shows it outperforms BitTorrent and an earlier static load balancing approach, achieving throughput competitive with ideal multicast when bandwidth is stable and adapting better when bandwidth changes.
This summarizes an academic paper that proposes an efficient and active data delivery method for highly dynamic mobile ad hoc networks. It introduces the Fish Eye State Routing protocol to overcome limitations of existing position-based opportunistic routing protocols. FSR uses a fisheye technique to reduce routing overhead by maintaining more accurate information about nearby nodes. It also proposes a virtual destination-based void handling scheme to address communication breaks. The paper analyzes FSR's performance and ability to deliver data reliably and securely in large, high-mobility networks.
Application independent based multicast routing protocols in mobile ad hoc ne...Alexander Decker
This document summarizes and compares several application-independent multicast routing protocols for mobile ad hoc networks (MANETs). It discusses the key challenges in designing multicast routing protocols for MANETs, including robustness, efficiency, control overhead, and dependency on unicast routing. It also presents a reference model architecture for multicast routing protocols and classifications based on topology (tree-based vs. mesh-based) and approach (reactive vs. proactive). Several specific multicast routing protocols are described, including AMRoute, AMRIS, and ODMRP, focusing on their mechanisms for group management, tree/mesh construction, and maintenance in dynamic network conditions.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document presents a comparative study of flat-based/data-centric wireless sensor network (WSN) specific routing protocols. It first provides background on data-centric approaches in WSNs and discusses some popular flat-based/data-centric routing protocols, including Directed Diffusion, Minimum Cost Forwarding Algorithm (MCFA), Threshold sensitive Energy Efficient sensor Network protocol (TEEN), Adaptive Periodic Threshold sensitive Energy Efficient sensor Network protocol (APTEEN), Energy Aware Data (EAD) Centric Routing Protocol, RUMOR Routing, Sensor Protocols for Information via Negotiation (SPIN), Constrained Anisotropic Diffusion Routing (CADR), COUGAR,
The International Journal of Engineering and Science (IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Privacy Enhancement of Node in Opportunistic Network by Using Virtual-Id ijsc
This document proposes a methodology to enhance privacy in opportunistic networks. It discusses how opportunistic networks work using a store-carry-forward approach without fixed infrastructure. The proposed methodology uses virtual IDs assigned by stable nodes and session keys to encrypt messages, hiding the real identities and locations of nodes from intermediate nodes. Simulation results show the proposed methodology reduces packet loss and delay while increasing throughput and privacy compared to the existing approach. Future work could look at reducing the workload of senders required to communicate securely in the opportunistic network.
Clustering effects on wireless mobile ad hoc networks performancesijcsit
A new era is dawning for wireless mobile ad hoc networks where communication will be done using a
group of mobile devices called cluster, hence clustered network. In a clustered network, protocols used by
these mobile devices are different from those used in a wired network; which helps to save computation
time and resources efficiently. This paper focuses on Cluster-Based Routing Protocol and Dynamic Source
Routing. The results presented in this paper illustrates the implementation of Ad-hoc On-Demand Distance
Vector routing protocol for enhancing mobile nodes performance and lifetime in a clustered network and to
demonstrate how this routing protocol results in time efficient and resource saving in wireless mobile ad
hoc networks.
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
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor IvaniukFwdays
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Keywords: AI, Containeres, Kubernetes, Cloud Native
Event Link: https://meine.doag.org/events/cloudland/2024/agenda/#agendaId.4211
"Scaling RAG Applications to serve millions of users", Kevin GoedeckeFwdays
How we managed to grow and scale a RAG application from zero to thousands of users in 7 months. Lessons from technical challenges around managing high load for LLMs, RAGs and Vector databases.
Session 1 - Intro to Robotic Process Automation.pdfUiPathCommunity
👉 Check out our full 'Africa Series - Automation Student Developers (EN)' page to register for the full program:
https://bit.ly/Automation_Student_Kickstart
In this session, we shall introduce you to the world of automation, the UiPath Platform, and guide you on how to install and setup UiPath Studio on your Windows PC.
📕 Detailed agenda:
What is RPA? Benefits of RPA?
RPA Applications
The UiPath End-to-End Automation Platform
UiPath Studio CE Installation and Setup
💻 Extra training through UiPath Academy:
Introduction to Automation
UiPath Business Automation Platform
Explore automation development with UiPath Studio
👉 Register here for our upcoming Session 2 on June 20: Introduction to UiPath Studio Fundamentals: https://community.uipath.com/events/details/uipath-lagos-presents-session-2-introduction-to-uipath-studio-fundamentals/
AI in the Workplace Reskilling, Upskilling, and Future Work.pptxSunil Jagani
Discover how AI is transforming the workplace and learn strategies for reskilling and upskilling employees to stay ahead. This comprehensive guide covers the impact of AI on jobs, essential skills for the future, and successful case studies from industry leaders. Embrace AI-driven changes, foster continuous learning, and build a future-ready workforce.
Read More - https://bit.ly/3VKly70
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...Jason Yip
The typical problem in product engineering is not bad strategy, so much as “no strategy”. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If you’re wrong, it forces a correction. If you’re right, it helps create focus. I’ll share how I’ve approached this in the past, both what works and lessons for what didn’t work so well.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance PanelsNorthern Engraving
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
Getting the Most Out of ScyllaDB Monitoring: ShareChat's TipsScyllaDB
ScyllaDB monitoring provides a lot of useful information. But sometimes it’s not easy to find the root of the problem if something is wrong or even estimate the remaining capacity by the load on the cluster. This talk shares our team's practical tips on: 1) How to find the root of the problem by metrics if ScyllaDB is slow 2) How to interpret the load and plan capacity for the future 3) Compaction strategies and how to choose the right one 4) Important metrics which aren’t available in the default monitoring setup.
"Choosing proper type of scaling", Olena SyrotaFwdays
Imagine an IoT processing system that is already quite mature and production-ready and for which client coverage is growing and scaling and performance aspects are life and death questions. The system has Redis, MongoDB, and stream processing based on ksqldb. In this talk, firstly, we will analyze scaling approaches and then select the proper ones for our system.
AppSec PNW: Android and iOS Application Security with MobSFAjin Abraham
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
From Natural Language to Structured Solr Queries using LLMsSease
This talk draws on experimentation to enable AI applications with Solr. One important use case is to use AI for better accessibility and discoverability of the data: while User eXperience techniques, lexical search improvements, and data harmonization can take organizations to a good level of accessibility, a structural (or “cognitive” gap) remains between the data user needs and the data producer constraints.
That is where AI – and most importantly, Natural Language Processing and Large Language Model techniques – could make a difference. This natural language, conversational engine could facilitate access and usage of the data leveraging the semantics of any data source.
The objective of the presentation is to propose a technical approach and a way forward to achieve this goal.
The key concept is to enable users to express their search queries in natural language, which the LLM then enriches, interprets, and translates into structured queries based on the Solr index’s metadata.
This approach leverages the LLM’s ability to understand the nuances of natural language and the structure of documents within Apache Solr.
The LLM acts as an intermediary agent, offering a transparent experience to users automatically and potentially uncovering relevant documents that conventional search methods might overlook. The presentation will include the results of this experimental work, lessons learned, best practices, and the scope of future work that should improve the approach and make it production-ready.
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Fu2510631066
1. Sameer Tuladhar, L. Sumalatha / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 2, Issue 5, September- October 2012, pp.1063-1066
Replication of Query Messages in the Unstructured Overlays
Peer-to-Peer Network
Sameer Tuladhar, L. Sumalatha
M.Tech.(Student), JNTUK, Kakinada,AP,India.
Assistant Professor, JNTUK, Kakinada, AP,India.
Abstract—
Unstructured peer–to-peer (P2P) In each of the P2P networks, a search mechanism
networks are attractive because they impose few needs to be defined so that resources need to be
constraints to the participating peers and have a known to be of importance to be used by users. But
low maintenance overhead. It provides high the problem arises because of the dynamic nature of
resilience and tolerance to the continuous arrival the P2P network which lacks central directory for
and departure of nodes. However the current resource location. Moreover current P2P content
P2P networks are mostly constricted by on- distribution systems suffer from limitations such as
demand content discovery mechanism. The content discovery mechanism only when requested
CoQUOS Approach has been suggested over and have no provision for declarations of data items
publish-subscribe systems which can they own to other interested peers. Participating
continuously notify the new data items, and a peers in the P2P network discover data by
means for the peers to advertise contents. circulating queries which are received by other peers
Another point that should be considered is churn and respond back if it has any matching data. But
which is the phenomenon of dynamic nature of the shortcoming is that these queries are not cached
entry and departure of peers in the P2P network. in the overlays network which results in the network
Thus the churn significantly affects the search to forget the query once it completed circulation.
mechanism in the P2P networks leading to Besides these limitations P2P networks must also
question the effectiveness and reliability of P2P deal with the churn which is the instantaneous
networks. In addition to the two novel connectivity of the peers and intentionally or
techniques, namely cluster-resilient random walk unintentionally departing from the network at any
algorithm for queries propagation and dynamic instance of time. The more the churn is prevailing in
probability-based query registration scheme as the network lesser will be the reliability of the
suggested in CoQUOS approach, we suggest the network.
message replication of query registrations
present on a peer to one or more of its 1.1 Paper Contributions
neighbouring peers. For this, a technique called In a P2P network, data and other necessary
Frequency Aware Search is suggested that resources are stored in a distributed fashion by the
defines a policy for partitioning the search space participating peers of the network which has to be of
and a replication policy of keys. This paper any interest to others. However to know whether the
elaborates the suggested algorithms through data is available or not and also to inform the
theoretical analysis and also reports the interested peers that requested data is available,
effectiveness proposed schemes through flooding of message seems to be an easy way out.
experimental evaluations. But it results in unnecessary traffic in the network.
In this paper we discuss about the CoQUOS
Keywords— Peer-to-Peer networks, CoQUOS approach for unstructured overlays network which
Approach, Random Walks, Churn, Message not only implements the message forwarding
replication without flooding to all the peers but also provides
best-effort notification service for the registered
1. INTRODUCTION queries from the peers about the discovery of the
Unstructured peer-to-peer networks have required data. The main advantage of this approach
been use for quite a long time for content sharing or is that it doesn’t enforce any topological constraints
file sharing by the participating nodes. Searching in on the underlying network structure and doesn’t
these types of networks is very popular these days. require any complex index structures of routing
Overlays networks form virtual topologies on top of mechanism. On top of these features, this paper
an underlying network as the links in the overlay deals with a search algorithm to improve the
networks have no correspondence with links negative impacts of the churn by replicating the
established in the underlying network. P2P networks messages to the neighbouring peers. This algorithm
are the best example of such overlays network. is Frequency-Aware Search (FASE) which is
basically a search space partitioning mechanism,
1063 | P a g e
2. Sameer Tuladhar, L. Sumalatha / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 2, Issue 5, September- October 2012, pp.1063-1066
combined with a replication policy. It also doesn’t in black i.e. {P2, P8, P11} are the beacon nodes and
require the rigid network structure or any pre P0 is the requesting peer which may receive multiple
routing informations. notifications. The Beacon nodes should be selected
in such a manner that they are distributed in every
2. THE CoQUOS SYSTEM OVERVIEW major region of the network such that every other
The CoQUOS system is a lightweight peer in the network can reach them in a very small
middleware that supports continuous queries and number of hops and they should not be located very
announcements/advertisements about discovery of close to each other.
data to the requesting peers in the unstructured
overlays or simply saying P2P networks. The key 2.2 Cluster Resilient Random Walk
features of this system include Cluster Resilient In P2P networks Random Walk message
Random Walk (CRW) [3] for forwarding the propagation are more popular than flooding. In this
messages to other peers in the network and a approach a peer receives and forwards the message
dynamic probability scheme for the registration of to another neighbouring peer at random if its Time-
queries in the peers. Continuous query is the means To-Live (TTL) is not expired. Since this message
of communication through which the peer registers forwarding is done only one at a time so it reduces
its interest to the network. It can be represented as the message traffic in the network in comparison to
Q=(SID, Predicate, VTime), which is actually a the flooding. However with the networks with high
tuple consisting of SourceID(SID) that identifies the degree of clustering of nodes, there is a greater
requesting peer, a query predicate(Predicate) for chance the message gets trapped within the cluster
matching condition of the query with the requested and its TTL gets expired before it come outs of the
data and validity time(VTime) which is the lifetime cluster. To overcome this drawback, CoQUOS
of interest of the requesting peer. system suggests a technique called Cluster Resilient
Random Walk (CRW). This technique considers the
2.1.1 Design concept of two peers being in the same cluster if
The CoQUOS system maintains each they have the large number of common neighbours.
continuous query at one or more peers in the So CRW forwards messages to those nodes which
network. The main objective of this system is to have less neighbours in common by calculating the
achieve high notification success rate for the query probability of nodes being not in the same cluster.
individually for the peer as well as overall for the Thus a peer has to compute the overlap between its
complete network. The figure below shows the neighbours list and those of each of its neighbours,
design of the CoQUOS system. and make message forwarding decisions.
Let NbrList(Pj) denote the list of
A Announcement neighbours of Pj and Pk,Pk+1,Pk+2...,Pk+l denote the
neighbours of the node Pj. UniqueNbrs(Pk+1,Pj)
N Notification
denote the set of neighbouring peers of Pk+1 that are
5 not the neighbours of Pj. Suppose the node Pj
A
receives a query message from a neighbouring peer
Beacon
A 1 Pk. The probability[3] of a neighbour Pk+1 receiving
2 6 4 A the message in the next hop can be calculated as
UniqueNbrs P k +1 ,P j
A λ
1 NbrsList P k +1
Source
0 7 5 FwdProbability(Pk+1) =
C
3 Beacon A A
UniqueNbrs P l ,P j
λ
NbrList Pl
N 1 A The propagation of query in CRW starts with source
A 1
4 peer creating a query message initializing its TTL to
1 1 1 6
A a default value. Each peer along the query’s path
Beacon
2
9 1
forward the message to one of their neighbours
8
1
2 according to their FwdProbability values. The TTL
3
Fig.1. CoQUOS System
0 Overview is then decremented at each hop until it becomes
E
zero. The Fig. 2. [3] given below illustrates CRW
If a continuous query Qm is registered at a peer Pi, message forwarding in a single step. The query
then Pi is called beacon node which implicitly takes message is at the node p4 and λ which controls the
the responsibility of notifying the source node of extent of the bias is set to 2. The numbers on the
any matching data items that it might discover edges indicate the probabilities of forwarding the
through incoming peer advertisements and checks query along that link. It has been observed that
with the registered query if anything matches to CRW is better than normal random walks and
provide notification to the requesting node about the flooding techniques in forwarding messages to
availability of the data. In the figure the peers shown various regions of the P2P overlays.
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3. Sameer Tuladhar, L. Sumalatha / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 2, Issue 5, September- October 2012, pp.1063-1066
over unstructured network which works well by
replication of queries with CRW technique.
4. FREQUENCY AWARE SEARCH
This technique defines a policy for dividing
the search space in the network and a key replication
policy.
The term frequency [6] is defined to be any
element of a finite and discrete set Φ. We define
functions fN: N→ Φ and fK: K→ Φ mapping
respectively the set of nodes (N) and keys (K) in
frequencies. A pointer is a tuple defined as follows:
2.3 Dynamic Query Registration Pointer: <Key,URL>
This technique is based on the dynamic
probability of the peers to decide the registration of In a pointer, a key identifies the item and an
queries on their own will. The registration URL is an unique node address where the query will
probability of a query varies as the query traverses be replicated. FASE improves search results by
along its path depending on whether the query has having nodes to forward random walks preferably to
been registered or not at the nodes it visited in the nodes in the same frequency of the search key. This
recent past. Thus if it has been registered at the node algorithm assumes that majority of nodes in the
in the recent past the probability of getting overlay have a constant degree.
registered in the next hop will be low and vice versa.
The registration probability [3] value of 4.1. Pointer Replication
each message Qm is denoted as (Rp(Qm)). This value In order to reduce the impact of churn and
is set to an initial value when a peer issues a query. properly facilitate item location, nodes replicate
If a peer registers this query, then it resets the value pointers using replication messages which carry one
of Rp(Qm) to the default initial value, before or more pointers with keys of the same frequency.
forwarding to its neighbours. However if the peer For the message MR let fK(MR) be the frequency of
choose not to register the query then it increments the keys being carried. These replication messages
Rp(Qm) by a pre-specified amount and forwards to carry a counter that defines the maximum number of
the neighbour. That means the Rp(Qm) value keeps replicas of each pointer to be stored. Every peer that
on incrementing until it gets registered wherein decides to store pointer decrements the replica
there will be sudden fall of point to the initial value. counter and when the counter becomes 0 the
This technique helps in controlling the number of message is discarded. Replication messages are
beacon nodes where such query registration is done. forwarded to those neighbours who have not been
visited previously. Since the replication message is
3. NETWORK OVERLAY CHURN preferably forwarded to nodes labelled with the
The very dynamic nature of P2P networks same frequency of the item, only one pointer is
means that there will be number of nodes that will stored for the whole path that contains number of
be entering and leaving the network at will. This nodes. This leads to the efficiency in storing the
means besides the resource location, P2P networks pointer. The main purpose of this replication method
must also cope with the intermittent connectivity of is to make items well available for searches at any
the peers in the network to ensure the reliability of point.
the overall network and data transfer. If this churn The pointer replication process is
is not handled well it can impact the success of illustrated in the Fig. 3 given below.
continuous queries and announcements as well.
When a node leaves the system properly, its
responsibilities are well taken care by the
neighbouring peers, but when it happens abruptly,
all the query registrations are lost thus it will hamper
the notification success rates of the respective
queries and the matching announcements will be
dropped. In order to resolve this problem one
solution is the replication of queries on one or more
of its neighbours. For this, the technique called Fig.3. Pointer Replication [6]
Frequency- Aware Search (FASE) algorithm can be
implemented which is basically a search protocol The above figure shows the path of a replication
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4. Sameer Tuladhar, L. Sumalatha / International Journal of Engineering Research and
Applications (IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 2, Issue 5, September- October 2012, pp.1063-1066
message MR starting at node S. The dotted circles
are the nodes in the same frequency of the message.
Here node S forwards message to a random
neighbour as it has no neighbour in MR frequency,
fK(MR) and thus the neighbour in the following hop
with fN(n) = fK(MR) will store a pointer. The figure
shows that a replication message is always
forwarded to unvisited nodes of the same frequency.
The nodes labelled with P store the pointer carried
by MR. These pointers are stored once per path and
the forwarding of MR is stopped once the replica
counter reaches 0 or when all the neighbours of the
current node have been visited before by MR.
Fig.5. Effectiveness of FASE to tackle churn
5. EXPERIMENTAL EVALUATION
This section shows the experimental results The mean NSRs which were measured
of the simulation of FASE algorithm with CRW when the churn rate is set to 10%, 20% and 30%
technique. For this we have simulated a network show that NSRs are high when using FASE than
consisting of 1000 nodes. The simulation created without using it.
100 unique data items, from a group of data items in
excess of 4000, each advertised by a distinct node 6. CONCLUSION
selected at random to the beacon nodes. For Maintaining the network reliability and data
evaluation of the algorithm, queries are performed resources available in a P2P network is a challenge
for items that are present in the network and are provided its dynamic nature i.e. churns. Although
selected uniformly at random. there may not be any perfect solution to tackle this
We measured the difference in the problem but the presented Frequency-Aware Search
Notification Success Rates (NSR) of overlay algorithm helps to reliably search the data item in
network with and without the application of FASE the unstructured overlays networks to very good
algorithm with CRW. The Fig.4. and Fig.5. shows extent. Like CoQUOS approach FASE doesn’t
the NSRs of the two approaches for which the enforce any restriction on the network structure or
registration probability value is set to 0.3. topology. Our evalution shows that with the use of
FASE, we can achieve high NSRs even on
increasing the churn rate. The results suggest that,
the replication policy like FASW helps to increase
the availability of searched items.
REFERENCES
[1] Gnutella P2P Network. www.gnutella .com
[2] Wikipedia.
http://en.wikipedia.org/wiki/Peer-to-peer
[3] L. Ramaswamy, J. Chen. The CoQUOS
Approach to Continuous Queries in
Fig.4. Comparison of minimum NSR of CRW with Unstructured Overlays. IEEE Transactions
and without use of FASE on Knowledge and Data Engineering,
2011.
In this experiment, the minimum NSRs of [4] L. Ramaswamy, J. Chen and Piyush Parate.
CRW were set to different values with the use of CoQUOS: Lightweight Support for
FASE and without FASE and the results show that Continuous Queries in Unstructured
there is significant benefit in the NSR with the use Overlays. IEEE 2007.
of FASE yielding reasonable NSR even at relatively [5] J. Chen, L. Ramaswamy and A. Meka.
low initial TTL values. Message Diffusion in Unstructured
We also checked the effectiveness of the Overlay Networks. In Proceedings of NCA,
CRW with and without using FASE to evaluate the 2007
effect of churn. The Fig.5. shows the results of the [6] Pedro Fonseca. Search Strategies in
experiment. Unstructured Overlays
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