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.
Intrusion detection in heterogeneous network by multipath routing based toler...eSAT Journals
Abstract The key theory of our redundancy management is to achieve the tradeoff between energy consumption vs. the gain in timeliness, security, and reliability to increase the system useful lifetime. A Innovative probability model to analyze the best redundancy level in terms of source redundancy, path redundancy and as well as the best intrusion detection settings in terms of the number of voters and the intrusion invocation break under which the lifetime of a HWSN [Heterogeneous Wireless Sensor Network] is maximized. In redundancy management “badmouthing” is the major problem in managing the redundancy. This badmouthing is malicious node which will never drop the packet even after knowing that the packet has been sent already. In this paper we propose a new scheme to overcome the problem of badmouthing by weighted based voting, this protocol will weight (Success Rate) all the nodes in the network to find the non-malicious node in the network which having more packet drop. In “weighted voting” main function is to find trust/reputation of neighbor nodes, as well as to tackle the “what paths to use” problem in multipath routing decision making for intrusion tolerance in WSNs. Keywords: Bad mouthing, Wireless Sensor Network, Weighted Based Voting, HWSN.
Intrusion detection in heterogeneous network by multipath routing based toler...eSAT Publishing House
This document summarizes a research paper that proposes a new scheme called weighted-based voting to overcome the problem of "badmouthing" attacks in wireless sensor networks with multipath routing. Badmouthing occurs when malicious nodes fail to drop packets even after knowing the packet was already delivered. The weighted-based voting protocol assigns weights based on success rates to identify trusted nodes. It uses weighted voting to make multipath routing decisions and remove malicious nodes detected by a distributed intrusion detection system based on votes from random voter nodes. The goal is to maximize network lifetime while satisfying quality of service requirements in heterogeneous wireless sensor networks.
Limiting Self-Propagating Malware Based on Connection Failure Behavior csandit
Self-propagating malware (e.g., an Internet worm) exploits security loopholes in software to
infect servers and then use them to scan the Internet for more vulnerable servers. While the
mechanisms of worm infection and their propagation models are well understood, defense
against worms remains an open problem. One branch of defense research investigates the
behavioral difference between worm-infected hosts and normal hosts to set them apart. One
particular observation is that a worm-infected host, which scans the Internet with randomly
selected addresses, has a much higher connection-failure rate than a normal host. Rate-limit
algorithms have been proposed to control the spread of worms by traffic shaping based on
connection failure rate. However, these rate-limit algorithms can work properly only if it is
possible to measure failure rates of individual hosts efficiently and accurately. This paper points
out a serious problem in the prior method and proposes a new solution based on a highly
efficient double-bitmap data structure, which places only a small memory footprint on the
routers, while providing good measurement of connection failure rates whose accuracy can be
tuned by system parameters.
Research on key predistribution scheme of wireless sensor networksIAEME Publication
This document summarizes a research paper on a novel key pre-distribution scheme for wireless sensor networks. It begins with an introduction to the challenges of key management in wireless sensor networks. It then describes the proposed scheme which has three phases: setup, direct key establishment, and path key establishment. The setup phase generates a large key pool and distributes keys to each sensor node. Direct key establishment allows sensor nodes to discover if they share keys directly. Path key establishment establishes keys through intermediate nodes if direct sharing fails. Performance analysis shows the scheme has higher local connectivity and stronger resilience against node capture attacks compared to previous schemes.
INFRINGEMENT PRECLUSION SYSTEM VIA SADEC: STEALTHY ATTACK DETECTION AND COUNT...ijp2p
In this paper we are providing a implementation details about simulated solution of stealthy packet drop
attack. Stealthy packet drop attack is a suite of four attack types, includes colluding collision, packet
misrouting, identity delegation and power control. Stealthy packet drop attacks disrupts the packet from
reaching to it’s destination through malicious behaviour. These attacks can be easily breakdown the
multi-hop wireless ad-hoc networks. Most widely preferred method for detecting attacks in wireless
network is behaviour based detection method. In this method a normal network overhears
communication from its neighbourhood. Here we are implementing a SADEC protocol which is
proposed solution of stealthy packet drop attacks. SADEC overlaid the base line local monitoring. In
base line local monitoring each neighbour maintains additional information about routing path also it
adds some checking responsibility to all its neighbours. SADEC proves more efficient than baseline local
monitoring to mitigate successfully all the stealthy attack types.
Hop- by- Hop Message Authentication and Wormhole Detection Mechanism in Wirel...Editor IJCATR
One of the most effective way to prevent unauthorized and corrupted message from being forward in wireless sensor
network. So to restrict these problems many authentication schemes have been developed based on symmetric key cryptosystem. But
there is high computational and communication overhead in addition to lack of scalability and resilience to node compromise attacks.
So to address these isuues polynomial based scheme[1] was introduced. But in these methods it having the threshold problem that
means to send the limited message only because to send larger number of message means the attacker can fully recover. So in my
existing system a scalable message authentication scheme based on elliptic curve cryptography. This scheme allows any node to
transmit an unlimited number of messages without suffering the threshold problem. But these method only detect the black hole and
grey hole attacks are dected but does not detect the worm hole attack. In my proposed system to detect the worm hole attack. Worm
hole attack is one of the harmful attack to which degrade the network performance. So, in the proposed system, one innovative
technique is introduced which is called an efficient wormhole detection mechanism in the wireless sensor networks. In this method,
considers the RTT between two successive nodes and those nodes‟ neighbor number which is needed to compare those values of other
successive nodes. The identification of wormhole attacks is based on the two faces. The first consideration is that the transmission time
between two wormhole attack affected nodes is considerable higher than that between two normal neighbor nodes. The second
detection mechanism is based on the fact that by introducing new links into the network, the adversary increases the number of
neighbors of the nodes within its radius. An experimental result shows that the proposed method achieves high network performance..
IRJET- The Hidden Virus Propagation Search Engine AttackIRJET Journal
1) The document discusses virus propagation through search engines, even when nodes and communities are not directly connected in social networks. It refers to this as the "propagation wormhole effect".
2) It proposes analyzing how search engines increase the number of infection sources and routes to better understand this phenomenon.
3) It describes modules for a search engine, detecting unofficial links spreading viruses, and analyzing virus propagation paths and affected nodes using the search engine.
Secure data aggregation technique for wireless sensor networks in the presenc...LogicMindtech Nologies
This document discusses secure data aggregation techniques for wireless sensor networks in the presence of collusion attacks. It describes how existing iterative filtering algorithms used for data aggregation and trust assessment in sensor networks are vulnerable to sophisticated collusion attacks. The proposed solution improves iterative filtering techniques by providing an initial trust estimate based on robust estimation of individual sensor errors. This makes the algorithms robust against collusion attacks while also making them more accurate and faster converging.
This document presents a multi-classification approach for detecting network attacks using a layered model. The proposed system consists of two stages - the first stage classifies network records as normal or an attack, while the second stage further classifies any detected attacks into four categories (DoS, Probe, R2L, U2R) using separate layers. Experimental results on the NSL-KDD dataset show the layered approach using the JRip classifier achieved very high classification accuracy of over 99% for each attack category, outperforming existing approaches. The multi-layered model is effective for improving detection of minority attack classes without reducing performance on majority classes.
Hack Recognition In Wireless Sensor NetworkIJERA Editor
A wireless sensor network can get separated into multiple connected components due to the failure of some of its nodes, which is called a ―cut‖. In this article we consider the problem of detecting cuts by the remaining nodes of a wireless sensor network. We propose an algorithm that allows like every node to detect when the connectivity to a specially designated node has been lost, and one or more nodes (that are connected to the special node after the cut) to detect the occurrence of the cut. The algorithm is distributed and asynchronous: every node needs to communicate with only those nodes that are within its communication range. The algorithm is based on the iterative computation of a fictitious ―electrical potential‖ of the nodes. The convergence rate of the underlying iterative scheme is independent of the size and structure of the network.
A wireless sensor network consists of spatially distributed autonomous devices that use sensors to cooperatively monitor environmental conditions. Sensor nodes form large networks and communicate wirelessly to send sensed data to a base station. They must focus on power conservation due to limited battery power. There are two types: static networks and dynamic networks where nodes can move.
IJCER (www.ijceronline.com) International Journal of computational Engineeri...ijceronline
This document summarizes a research paper on black hole attacks and countermeasures in the AODV routing protocol for mobile ad hoc networks (MANETs). It describes how a black hole attack works by having a malicious node send fake route replies to drop packets. It then discusses cooperative black hole attacks and several existing solutions that use watchdog mechanisms, reputation systems, intrusion detection, and opinion-based approaches to detect and isolate malicious nodes.
Secure & Energy Efficient Scheme against Denial-of-Sleep Attack in WSNIJMTST Journal
Security breaches and energy consumption issues are indispensable in WSN (wireless sensor networks). Considering attacks like Denial-of-Service (DoS) where not only the service is not provided but in addition to that unwanted power is also consumed.“Denial-of-Sleep attack" (type of DoS attack) also results in unnecessary power exhaustion. This paper briefs
Review for Secure Data Aggregation in Wireless Sensor NetworksIRJET Journal
This document reviews techniques for secure data aggregation in wireless sensor networks. It discusses two main approaches: hop-by-hop encryption and end-to-end encryption. With hop-by-hop encryption, data is encrypted at each node and decrypted and re-encrypted by aggregator nodes. With end-to-end encryption, data is only decrypted at the base station. The document also proposes using an efficient distributed trust model to evaluate the trustworthiness of nodes to help avoid false data aggregation. Secure data aggregation aims to provide data confidentiality, integrity, authentication and availability while reducing energy consumption through efficient aggregation in wireless sensor networks.
Optimized rationalize security and efficient data gathering in wireless senso...ijmnct
Wireless reprogramming during a wireless detector net- work (WSN) is that the method of propagating a
replacement code image or relevant commands to detector nodes. As a WSN is sometimes deployed in
hostile environments, secure reprogramming is and can continue to be a significant concern. Whereas all
existing insecure/secure reprogramming protocols square measure supported the centralized approach,
it\'s necessary to support distributed reprogramming during which multiple licensed network users will at
the same time and directly reprogram detector nodes while not involving the bottom station. Terribly
recently, a novel secure rationalize and distributed reprogramming protocol named SRDRP has been
planned, that is that the initial work of its kind. However, during this paper, we have a tendency to establish
associate inherent style weakness within the increased signature verification of SRDRP associated demonstrate
that it\'s at risk of associate impersonation attack by that an resister will simply impersonate any
licensed user to hold out reprogramming. Later on, we have a tendency to propose a straightforward
modification to mend the known security drawback while not losing any options of SRDRP. Our
experimental results demonstrate that it\'s able to eliminate the planning weakness by adding one-B
redundant information which the execution time of the prompt answer during a 1.6-GHz laptop personal
computer is not any quite one ms. Therefore, our answer is possible and secure for real-world applications.
Moreover, we have a tendency to show that, so as to additional improve the safety and potency of SRDRP;
any higher established identity-based position formula will be directly utilized in SRDRP. Supported
implementation results, we have a tendency to demonstrate potency improvement over the initial SRDRP
A Case Study on Authentication of Wireless Sensor Network based on Virtual Ce...AM Publications
This document presents a case study on authentication in wireless sensor networks using virtual certificate authorities. It discusses how sensor nodes can securely transmit data when moving across different wireless sensor networks. The proposed approach uses virtual certificates issued by a virtual certificate authority to authenticate moving sensor nodes. Simulation results show that the virtual certificate scheme reduces collisions compared to previous authentication algorithms. The scheme enhances security, scalability and interoperability while supporting node mobility across wireless sensor networks.
Cluster Based Misbehaviour Detection and Authentication Using Threshold Crypt...CSCJournals
In mobile ad hoc networks, the misbehaving nodes can cause dysfunction in the network resulting in damage of other nodes. In order to establish secure communication with the group members of a network, use of a shared group key for confidentiality and authentication is required. Distributing the shares of secret group key to the group members securely is another challenging task in MANET. In this paper, we propose a Cluster Based Misbehavior Detection and Authentication scheme using threshold cryptography in MANET. For secure data transmission, when any node requests a certificate from a cluster head (CH), it utilizes a threshold cryptographic technique to issue the certificate to the requested node for authentication. The certificate of a node is renewed or rejected by CH, based on its trust counter value. An acknowledgement scheme is also included to detect and isolate the misbehaving nodes. By simulation results, we show that the proposed approach reduces the overhead.
Enhanced security for non English users of Wireless Sensor NetworksEswar Publications
Wireless Sensor Networks is an infrastructure less, self-configured, reprogrammable, energy-aware network used
in various applications. Many networks works on security of data including mainly ASCII values but not the non English end users. BDNA cryptography describes how to encrypt non English patterns but which leads to propagation of more bits transmitted means indirectly consumes more energy in WSN. In this we propose new steps to reduce the transmission of more bytes in the network. This gives high propagation speed in the network with minimum hash overhead.
IRJET- - Implementation of a Secured Approach using Dynamic Key Managemen...IRJET Journal
This document proposes a secure authentication approach for wireless sensor networks using dynamic key management and zero knowledge protocols. It begins with background on wireless sensor networks and security issues. It then describes related work on key predistribution and dynamic key management schemes. A proposed algorithm is described that uses a rekeying mechanism, zero knowledge authentication without directly transmitting secret keys, and dynamic keys that change for each authentication. Simulation results on networks of up to 25 nodes show the approach is efficient and can authenticate nodes while preventing attacks like cloning.
Detecting Identity Based Attack In MIMO System Using Link Signature In Wirele...IRJET Journal
This document discusses detecting identity-based attacks in MIMO systems using link signatures in wireless networks. It first introduces the concept of link signatures for wireless authentication and identifies a new "mimicry attack" against existing schemes. The attack is extended to MIMO systems. To defend against mimicry attacks, the document proposes a new "time-synched link signature" scheme that integrates cryptography and time factors. It suggests this new signature is effective for physical layer authentication. The document also reviews related work on location distinction and existing authentication techniques, and outlines the proposed system for detecting mimicry attacks using RSS and isolating malicious nodes.
Analyze and Detect Packet Loss for Data Transmission in WSNIJERA Editor
An emerging technology is Wireless Sensor Network where sensors are deployed at extreme geographical
locations where human intervention is not possible. The data transferred through the sensor nodes are majorly
used in crucial decision making process. Since WSN is a wireless infrastructure it tempts the attackers to
tamper/misuse the data. Privacy-preserving routing is important for some ad hoc networks that require stronger
privacy protection. Hence a routing protocol to achieve total unobservability by anonymous key establishment
using secret session keys and group signature is used. The unobservable routing protocol is divided into two
main phases. First phases define an anonymous key establishment process to construct secret session keys.
Second phase consist of unobservable route discovery process to find appropriate as well as secure route to the
destination. A node establishes a key with its direct neighbour and uses the same key to encrypt the packet
before transferring.
A SECURE CLUSTER BASED COMMUNICATION IN WIRELESS NETWORK USING CRYPTOGRAPHIC ...IJNSA Journal
Mobile Adhoc Networks are becoming very popular in current Wireless Technology, which is been
associated to business, socially and in some critical applications like Military etc, The network which is
formed by self configuring wireless links which are connected to each other. These applications are
categorized by hostile environment that they serve while communicating between nodes. However in such
Wireless Network will be more exposed to different types of security attacks. The challenge is to meet
secure network communication. In this paper we focus on cluster based secure communication to improve
the reliability between clusters. In this scheme the Cluster Members (CM) submits a report to the Cluster
Head (CH) and temporarily stores Evidences as a security tokens. The reports contain digital signatures.
The CH will verify the consistency of the CM report and updates to Accounting Centre (AC). AC will verify
the uniformity of reports and clears the cryptographic operations. For attacker nodes, the security tokens
are requested to classify and expel the attacker nodes which submit wrong reports.
IRJET-Structure less Efficient Data Aggregation and Data Integrity in Sensor ...IRJET Journal
This document proposes a structureless and efficient data aggregation technique for wireless sensor networks that ensures data integrity with low transmission overhead. It introduces a concept where the base station can recover individual sensor data even after aggregation by cluster heads. This allows the base station to verify data integrity and authenticity, as well as perform any desired aggregation functions. It then proposes a structure-free scheme using intracluster and intercluster encryption and aggregation procedures. This scheme aims to address limitations of previous work such as high transmission costs and inability to query individual data values, while maintaining security and scalability. The document analyzes security and scalability aspects and argues the proposed scheme offers improved performance and efficiency for data aggregation in wireless sensor networks.
A SECURE CLUSTER BASED COMMUNICATION IN WIRELESS NETWORK USING CRYPTOGRAPHIC ...IJNSA Journal
Mobile Adhoc Networks are becoming very popular in current Wireless Technology, which is been associated to business, socially and in some critical applications like Military etc, The network which is formed by self configuring wireless links which are connected to each other. These applications are categorized by hostile environment that they serve while communicating between nodes. However in such Wireless Network will be more exposed to different types of security attacks. The challenge is to meet secure network communication. In this paper we focus on cluster based secure communication to improve the reliability between clusters. In this scheme the Cluster Members (CM) submits a report to the Cluster Head (CH) and temporarily stores Evidences as a security tokens. The reports contain digital signatures. The CH will verify the consistency of the CM report and updates to Accounting Centre (AC). AC will verify the uniformity of reports and clears the cryptographic operations. For attacker nodes, the security tokens are requested to classify and expel the attacker nodes which submit wrong reports.
IRJET-Secured Approach for Authentication of Messages in Wireless Sensor Netw...IRJET Journal
The document summarizes a research paper that proposes a new authentication approach for wireless sensor networks using elliptic curve cryptography. The approach aims to provide efficient and robust authentication that prevents unauthorized access and modification of messages as they are forwarded through the network. It introduces an unconditionally secure and efficient source anonymous message authentication scheme based on elliptic curves that allows intermediate nodes to authenticate messages while providing source node privacy. The proposed scheme is designed to be more efficient than previous polynomial-based schemes in terms of memory and security while also having no threshold limitation on the number of messages that can be verified.
Low Priced And Efficient Energy Replica Detection In WSNIRJET Journal
This document summarizes a research paper that proposes a low-cost and energy-efficient solution for detecting replica nodes in static wireless sensor networks. The solution uses Bloom filters and a sequential delivery algorithm to present neighboring node IDs with a constant size without requiring GPS hardware. This approach slowly increases traffic between neighboring and randomly selected nodes, generating less traffic than existing solutions. The proposed solution reduces costs, improves energy efficiency, and supports large-scale detection of replica nodes compared to other approaches.
Improved Development of Energy Efficient Routing Algorithm for Privacy Preser...IRJET Journal
This document proposes an algorithm to improve energy efficiency and privacy preservation for the sink node in wireless sensor networks. The algorithm uses node clustering, where sensor nodes are grouped into clusters with a cluster head node. Data is routed from cluster members to their cluster head, and then from cluster heads to the sink node. The algorithm elects a subset of cluster heads to broadcast data, obscuring the location of the sink node and distributing energy usage across nodes. Simulations analyze how effectively this approach preserves sink node anonymity while limiting energy depletion across varying network conditions.
Detecting Various Black Hole Attacks by Using Preventor Node in Wireless Sens...IRJET Journal
This document discusses detecting black hole attacks in wireless sensor networks. It begins with an abstract that introduces black hole attacks as a security threat in mobile ad hoc networks (MANETs) where malicious nodes drop packets. The document then reviews previous work on defending against black hole attacks, including using trust values, dummy nodes, and sequence number verification. It proposes using a "preventor node" to create a secure environment and detect black hole attacks in MANETs to improve network performance and security.
misrouting attack in wireless sensor networks under replication attack. agent based security schemes in Security schemes for wireless sensor networks. International journal paper on wireless sensor networks.
A Study on Security in Wireless Sensor Networksijtsrd
Wireless Sensor Networks (WSNs) present myriad application opportunities for several applications such as precision agriculture, environmental and habitat monitoring, traffic control, industrial process monitoring and control, home automation and mission-critical surveillance applications such as military surveillance, healthcare (elderly, home monitoring) applications, disaster relief and management, fire detection applications among others. Since WSNs are used in mission-critical tasks, security is an essential requirement. Sensor nodes can easily be compromised by an adversary due to unique constraints inherent in WSNs such as limited sensor node energy, limited computation and communication capabilities and the hostile deployment environments. Shabnam Kumari | Sumit Dalal | Rashmi"A Study on Security in Wireless Sensor Networks" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: http://www.ijtsrd.com/papers/ijtsrd12931.pdf http://www.ijtsrd.com/engineering/electronics-and-communication-engineering/12931/a-study-on-security-in-wireless-sensor-networks/shabnam-kumari
A Key Management Approach For Wireless Sensor NetworksZac Darcy
In this paper we presenta key management approach for wireless sensor networks. This approach
facilitating an efficient scalable post-distribution key establishment that provides different security services.
We have developed and tested this approach under TinyOs. Result shows that this approach provides
acceptable resistance against node capture attacks and replay attacks. The provision of security services is
completely transparent to the user of the WSNs. Furthermore, being highly scalable and lightweight, this
approach is appropriate to be used in a wireless sensor network of hundreds of nodes.
A Key Management Approach For Wireless Sensor NetworksZac Darcy
In this paper we presenta key management approach for wireless sensor networks. This approach
facilitating an efficient scalable post-distribution key establishment that provides different security services.
We have developed and tested this approach under TinyOs. Result shows that this approach provides
acceptable resistance against node capture attacks and replay attacks. The provision of security services is
completely transparent to the user of the WSNs. Furthermore, being highly scalable and lightweight, this
approach is appropriate to be used in a wireless sensor network of hundreds of nodes.
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.
A Top-down Hierarchical Multi-hop Secure Routing Protocol for Wireless Sensor...ijasuc
This paper proposes a new top-down hierarchical, multi-hop, secure routing protocol for the wireless
sensor network, which is resilient to report fabrication attack. The report fabrication attack tries to
generate bogus reports by compromising the sensor nodes to mislead the environment monitoring
application executed by randomly deployed wireless sensor nodes. The proposed protocol relies on
symmetric key mechanism which is appropriate for random deployment of wireless sensor nodes. In the
proposed protocol, base station initiates the synthesis of secure hierarchical topology using top down
approach. The enquiry phase of the protocol provides assurance for the participation of all the cluster
heads in secure hierarchical topology formation. Further, this methodology takes care of failure of head
node or member node of a cluster. This protocol ensures confidentiality, integrity, and authenticity of the
final report of the monitoring application. The simulation results demonstrate the scalability of the
proposed protocol.
The document proposes a security model for wireless sensor networks using zero knowledge protocol. It addresses security threats like cloning attacks, man-in-the-middle attacks, and replay attacks. The model uses a unique fingerprint for each node based on its neighboring nodes to detect cloning. It also uses zero knowledge protocol for sensor nodes to verify authenticity without transmitting cryptographic information, preventing man-in-the-middle and replay attacks. The paper analyzes the performance and security of the proposed model.
IRJET- An Introduction to Wireless Sensor Networks, its Challenges and SecurityIRJET Journal
- Wireless sensor networks (WSNs) are composed of small, battery-powered sensor nodes that collect data from the environment and transmit it to each other and a base station. They face challenges related to node mobility, energy efficiency, and lifetime.
- The document discusses clustering in WSNs, which involves organizing nodes into clusters with cluster heads to improve stability and reduce energy consumption. It also covers security issues and applications of WSNs in various fields like healthcare, the environment, and more.
Similar to IRJET- Enhanced ID based Data Aggregation and Detection Against Sybil Attack using Challenge Response Authentication Protocol (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
Conservation of Taksar through Economic RegenerationPriyankaKarn3
This was our 9th Sem Design Studio Project, introduced as Conservation of Taksar Bazar, Bhojpur, an ancient city famous for Taksar- Making Coins. Taksar Bazaar has a civilization of Newars shifted from Patan, with huge socio-economic and cultural significance having a settlement of about 300 years. But in the present scenario, Taksar Bazar has lost its charm and importance, due to various reasons like, migration, unemployment, shift of economic activities to Bhojpur and many more. The scenario was so pityful that when we went to make inventories, take survey and study the site, the people and the context, we barely found any youth of our age! Many houses were vacant, the earthquake devasted and ruined heritages.
Conservation of those heritages, ancient marvels,a nd history was in dire need, so we proposed the Conservation of Taksar through economic regeneration because the lack of economy was the main reason for the people to leave the settlement and the reason for the overall declination.
Development of Chatbot Using AI/ML Technologiesmaisnampibarel
The rapid advancements in artificial intelligence and natural language processing have significantly transformed human-computer interactions. This thesis presents the design, development, and evaluation of an intelligent chatbot capable of engaging in natural and meaningful conversations with users. The chatbot leverages state-of-the-art deep learning techniques, including transformer-based architectures, to understand and generate human-like responses.
Key contributions of this research include the implementation of a context- aware conversational model that can maintain coherent dialogue over extended interactions. The chatbot's performance is evaluated through both automated metrics and user studies, demonstrating its effectiveness in various applications such as customer service, mental health support, and educational assistance. Additionally, ethical considerations and potential biases in chatbot responses are examined to ensure the responsible deployment of this technology.
The findings of this thesis highlight the potential of intelligent chatbots to enhance user experience and provide valuable insights for future developments in conversational AI.
Software Engineering and Project Management - Introduction to Project ManagementPrakhyath Rai
Introduction to Project Management: Introduction, Project and Importance of Project Management, Contract Management, Activities Covered by Software Project Management, Plans, Methods and Methodologies, some ways of categorizing Software Projects, Stakeholders, Setting Objectives, Business Case, Project Success and Failure, Management and Management Control, Project Management life cycle, Traditional versus Modern Project Management Practices.
Profiling of Cafe Business in Talavera, Nueva Ecija: A Basis for Development ...IJAEMSJORNAL
This study aimed to profile the coffee shops in Talavera, Nueva Ecija, to develop a standardized checklist for aspiring entrepreneurs. The researchers surveyed 10 coffee shop owners in the municipality of Talavera. Through surveys, the researchers delved into the Owner's Demographic, Business details, Financial Requirements, and other requirements needed to consider starting up a coffee shop. Furthermore, through accurate analysis, the data obtained from the coffee shop owners are arranged to derive key insights. By analyzing this data, the study identifies best practices associated with start-up coffee shops’ profitability in Talavera. These findings were translated into a standardized checklist outlining essential procedures including the lists of equipment needed, financial requirements, and the Traditional and Social Media Marketing techniques. This standardized checklist served as a valuable tool for aspiring and existing coffee shop owners in Talavera, streamlining operations, ensuring consistency, and contributing to business success.
Encontro anual da comunidade Splunk, onde discutimos todas as novidades apresentadas na conferência anual da Spunk, a .conf24 realizada em junho deste ano em Las Vegas.
Neste vídeo, trago os pontos chave do encontro, como:
- AI Assistant para uso junto com a SPL
- SPL2 para uso em Data Pipelines
- Ingest Processor
- Enterprise Security 8.0 (Maior atualização deste seu release)
- Federated Analytics
- Integração com Cisco XDR e Cisto Talos
- E muito mais.
Deixo ainda, alguns links com relatórios e conteúdo interessantes que podem ajudar no esclarecimento dos produtos e funções.
https://www.splunk.com/en_us/campaigns/the-hidden-costs-of-downtime.html
https://www.splunk.com/en_us/pdfs/gated/ebooks/building-a-leading-observability-practice.pdf
https://www.splunk.com/en_us/pdfs/gated/ebooks/building-a-modern-security-program.pdf
Nosso grupo oficial da Splunk:
https://usergroups.splunk.com/sao-paulo-splunk-user-group/
A vernier caliper is a precision instrument used to measure dimensions with high accuracy. It can measure internal and external dimensions, as well as depths.
Here is a detailed description of its parts and how to use it.
A brand new catalog for the 2024 edition of IWISS. We have enriched our product range and have more innovations in electrician tools, plumbing tools, wire rope tools and banding tools. Let's explore together!
Social media management system project report.pdfKamal Acharya
The project "Social Media Platform in Object-Oriented Modeling" aims to design
and model a robust and scalable social media platform using object-oriented
modeling principles. In the age of digital communication, social media platforms
have become indispensable for connecting people, sharing content, and fostering
online communities. However, their complex nature requires meticulous planning
and organization.This project addresses the challenge of creating a feature-rich and
user-friendly social media platform by applying key object-oriented modeling
concepts. It entails the identification and definition of essential objects such as
"User," "Post," "Comment," and "Notification," each encapsulating specific
attributes and behaviors. Relationships between these objects, such as friendships,
content interactions, and notifications, are meticulously established.The project
emphasizes encapsulation to maintain data integrity, inheritance for shared behaviors
among objects, and polymorphism for flexible content handling. Use case diagrams
depict user interactions, while sequence diagrams showcase the flow of interactions
during critical scenarios. Class diagrams provide an overarching view of the system's
architecture, including classes, attributes, and methods .By undertaking this project,
we aim to create a modular, maintainable, and user-centric social media platform that
adheres to best practices in object-oriented modeling. Such a platform will offer users
a seamless and secure online social experience while facilitating future enhancements
and adaptability to changing user needs.
Exploring Deep Learning Models for Image Recognition: A Comparative Reviewsipij
Image recognition, which comes under Artificial Intelligence (AI) is a critical aspect of computer vision,
enabling computers or other computing devices to identify and categorize objects within images. Among
numerous fields of life, food processing is an important area, in which image processing plays a vital role,
both for producers and consumers. This study focuses on the binary classification of strawberries, where
images are sorted into one of two categories. We Utilized a dataset of strawberry images for this study; we
aim to determine the effectiveness of different models in identifying whether an image contains
strawberries. This research has practical applications in fields such as agriculture and quality control. We
compared various popular deep learning models, including MobileNetV2, Convolutional Neural Networks
(CNN), and DenseNet121, for binary classification of strawberry images. The accuracy achieved by
MobileNetV2 is 96.7%, CNN is 99.8%, and DenseNet121 is 93.6%. Through rigorous testing and analysis,
our results demonstrate that CNN outperforms the other models in this task. In the future, the deep
learning models can be evaluated on a richer and larger number of images (datasets) for better/improved
results.
OCS Training Institute is pleased to co-operate with
a Global provider of Rig Inspection/Audits,
Commission-ing, Compliance & Acceptance as well as
& Engineering for Offshore Drilling Rigs, to deliver
Drilling Rig Inspec-tion Workshops (RIW) which
teaches the inspection & maintenance procedures
required to ensure equipment integrity. Candidates
learn to implement the relevant standards &
understand industry requirements so that they can
verify the condition of a rig’s equipment & improve
safety, thus reducing the number of accidents and
protecting the asset.