This document discusses switching, routing, and flow control in interconnection networks. It covers different switching mechanisms like packet switching and circuit switching. It also discusses routing algorithms and techniques to avoid deadlocks like virtual channels and deadlock-free routing. The key topics are how packets are routed through switches, challenges like tree saturation and deadlocks, and approaches to provide reliable communication while matching the capabilities of the network hardware.
Network devices such as repeaters, hubs, bridges, switches, routers, and gateways are used to connect, expand, and manage network traffic. They operate at different layers of the OSI model from the physical layer to the network layer. Repeaters and hubs operate at the physical layer and broadcast traffic to all ports. Bridges segment networks at the data link layer by filtering traffic based on MAC addresses. Switches further improve segmentation by opening virtual circuits between connected devices. Routers connect multiple networks and use IP addresses to choose the best path at the network layer.
The document discusses different network switching techniques including circuit switching, packet switching, datagram switching, virtual circuit networks, and message switching. It provides details on how each technique works, including setup/teardown phases for circuit switching, treating each packet independently for datagram networks, and storing entire messages at intermediate nodes for message switching. Key aspects like bandwidth efficiency and reliability are compared between the different techniques.
This document discusses different types of networking devices used to connect local area networks (LANs). It describes hubs, repeaters, bridges, routers, and gateways. Hubs and repeaters operate at the physical layer, bridges operate at the physical and data link layers, and routers and gateways operate at the network layer and above to connect multiple networks and perform protocol conversion. The document provides details on the functions and characteristics of each type of device.
Networking devices can be categorized into five groups based on the OSI layer in which they operate: hubs, repeaters, bridges, routers, and gateways. Hubs and repeaters operate at the physical layer, bridges operate at the data link layer, and routers and gateways operate at the network layer or above. Bridges connect local area networks (LANs) by filtering and forwarding traffic between them based on MAC addresses, while routers connect LANs and wide area networks by routing packets based on logical network layer addresses.
This document discusses circuit switching and packet switching in communication networks. It provides details on:
1. Circuit switching establishes a dedicated communication path between two stations but the capacity is wasted if no data is being sent. Packet switching divides messages into packets that are transmitted individually and resources are allocated on demand.
2. Circuit switching is used for applications like voice calls where continuous transmission is required. Packet switching provides better line efficiency since the bandwidth is shared between packets.
3. Switches can be implemented using space division or time division techniques. Common switches include crossbar switches, multistage switches, and time-space-time switches.
This document discusses communication networks and provides details about various types of networks:
- It classifies networks according to how information flows, including switching networks and broadcast networks. It describes circuit switching and packet switching in switching networks.
- It discusses different types of networks based on coverage area, including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It provides examples for each type.
- It describes the Open Systems Interconnection (OSI) reference model and its seven layers, using the link layer as an example to explain protocols.
This document discusses congestion control and internetworking at the network layer. It begins by defining congestion and the factors that can cause it. It then covers general principles of congestion control such as increasing resources or decreasing traffic. The document discusses congestion control techniques for virtual circuit and datagram subnets, including admission control and choke packets. It also covers internetworking concepts like concatenated virtual circuits, connectionless internetworking, tunneling, and fragmentation.
Introduction, Virtual and Datagram networks, study of router, IP protocol and addressing in the Internet, Routing algorithms, Broadcast and Multicast routing
Network devices such as repeaters, hubs, bridges, switches, routers, and gateways are used to connect, expand, and manage network traffic. They operate at different layers of the OSI model from the physical layer to the network layer. Repeaters and hubs operate at the physical layer and broadcast traffic to all ports. Bridges segment networks at the data link layer by filtering traffic based on MAC addresses. Switches further improve segmentation by opening virtual circuits between connected devices. Routers connect multiple networks and use IP addresses to choose the best path at the network layer.
The document discusses different network switching techniques including circuit switching, packet switching, datagram switching, virtual circuit networks, and message switching. It provides details on how each technique works, including setup/teardown phases for circuit switching, treating each packet independently for datagram networks, and storing entire messages at intermediate nodes for message switching. Key aspects like bandwidth efficiency and reliability are compared between the different techniques.
This document discusses different types of networking devices used to connect local area networks (LANs). It describes hubs, repeaters, bridges, routers, and gateways. Hubs and repeaters operate at the physical layer, bridges operate at the physical and data link layers, and routers and gateways operate at the network layer and above to connect multiple networks and perform protocol conversion. The document provides details on the functions and characteristics of each type of device.
Networking devices can be categorized into five groups based on the OSI layer in which they operate: hubs, repeaters, bridges, routers, and gateways. Hubs and repeaters operate at the physical layer, bridges operate at the data link layer, and routers and gateways operate at the network layer or above. Bridges connect local area networks (LANs) by filtering and forwarding traffic between them based on MAC addresses, while routers connect LANs and wide area networks by routing packets based on logical network layer addresses.
This document discusses circuit switching and packet switching in communication networks. It provides details on:
1. Circuit switching establishes a dedicated communication path between two stations but the capacity is wasted if no data is being sent. Packet switching divides messages into packets that are transmitted individually and resources are allocated on demand.
2. Circuit switching is used for applications like voice calls where continuous transmission is required. Packet switching provides better line efficiency since the bandwidth is shared between packets.
3. Switches can be implemented using space division or time division techniques. Common switches include crossbar switches, multistage switches, and time-space-time switches.
This document discusses communication networks and provides details about various types of networks:
- It classifies networks according to how information flows, including switching networks and broadcast networks. It describes circuit switching and packet switching in switching networks.
- It discusses different types of networks based on coverage area, including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It provides examples for each type.
- It describes the Open Systems Interconnection (OSI) reference model and its seven layers, using the link layer as an example to explain protocols.
This document discusses congestion control and internetworking at the network layer. It begins by defining congestion and the factors that can cause it. It then covers general principles of congestion control such as increasing resources or decreasing traffic. The document discusses congestion control techniques for virtual circuit and datagram subnets, including admission control and choke packets. It also covers internetworking concepts like concatenated virtual circuits, connectionless internetworking, tunneling, and fragmentation.
Introduction, Virtual and Datagram networks, study of router, IP protocol and addressing in the Internet, Routing algorithms, Broadcast and Multicast routing
- Data transmission can occur serially (one bit at a time) or in parallel (multiple bits simultaneously). Serial transmission can be synchronous (timed) or asynchronous (untimed).
- Communication direction can be simplex (one-way), half-duplex (two-way but not simultaneous), or full-duplex (two-way simultaneous).
- Protocols define rules for communication including transmission speed/mode, error checking, and more to ensure data is transmitted accurately. Common protocols control handshaking between devices to establish connections.
This document provides an overview of local area networks (LANs) including common applications, architectures, topologies, transmission media, and protocols. Some key points:
1) LANs are used for personal computer networks, connecting large backend systems, high-speed office networks, storage area networks, and interconnecting multiple local networks.
2) Common topologies include bus, ring, star, and tree. Choices consider reliability, expandability, performance and the physical layout/medium.
3) Important protocols are Ethernet at the data link layer and IEEE 802 standards for physical and MAC sublayers which define frame formats and media access control.
This document provides an overview of local area networks (LANs) including common applications, architectures, topologies, transmission media, and protocols. Some key points:
1) LANs are used for personal computer networks, connecting large backend systems, high-speed office networks, storage area networks, and interconnecting multiple local networks.
2) Common topologies include bus, ring, star, and tree. Choices consider reliability, expandability, performance and the physical layout/medium.
3) Ethernet originally used coaxial cable but now focuses on twisted pair cabling. Fiber optic cables provide high speeds but are more expensive to install.
4) The protocol architecture includes the physical, data link
This document summarizes key points from Chapter 15 of William Stallings' book "Data and Computer Communications", 7th Edition. It discusses the applications and architectures of local area networks (LANs). The main applications covered are personal computer LANs, back-end networks, storage area networks, and high-speed office networks. Common LAN topologies like bus, ring, star and their characteristics are explained. Issues around transmission media, protocols, and network devices like bridges, hubs and switches are also summarized at a high level.
This document discusses various internet network technologies and protocols. It describes wide area networks that connect across large geographical areas using circuit switching, packet switching, frame relay, or asynchronous transfer mode. Packet switching breaks data into packets that are transmitted individually over the network, while circuit switching establishes a dedicated communications path. Frame relay and ATM aim to improve on packet switching by reducing overhead. The document also discusses local area networks, protocol architecture, protocol data units, standards organizations, and tasks to research standards and translate sections of a reference book.
Here are short notes on X.25, ATM, and Frame Relay:
a. X.25 - X.25 is a protocol suite for packet switched WANs. It establishes switched virtual circuits between DTE devices using X.121 addressing. X.25 uses LAPB for data link layer and PLP for network layer. It provides reliable data transfer over public networks.
b. ATM - Asynchronous Transfer Mode is a cell switching and multiplexing technology designed for B-ISDN. It uses fixed size 53 byte cells and establishes permanent virtual circuits between endpoints. ATM supports real-time multimedia traffic using constant bit rate, variable bit rate and available bit rate.
c. Frame Relay -
Networking and Internetworking Devices21viveksingh
This document provides information on various networking and internetworking devices. It discusses hubs, which connect multiple networking cables together but do not amplify or filter signals. It covers bridges, which operate at the physical and data link layers to filter traffic between network segments. Routers are described as connecting LANs and WANs by routing packets based on logical addresses using routing tables. Gateways link different network types and protocols by translating between formats. Finally, switches and brouters are introduced, with switches offering intelligence beyond hubs to reduce congestion, and brouters combining routing and bridging capabilities.
This document provides an overview of communication networks and protocols. It discusses circuit switching and packet switching, including store-and-forward operation and pipelining in packet switching. It also summarizes layered network architecture, with an emphasis on the TCP/IP model including the Internet, transport, network, link and physical layers. Key protocols like IP, TCP and UDP are introduced along with examples of Internet applications.
Dc ch10 : circuit switching and packet switchingSyaiful Ahdan
This document discusses different communication switching techniques for networks, including circuit switching and packet switching. Circuit switching establishes a dedicated communication path between stations but is inefficient for bursty data traffic. Packet switching divides messages into packets that are transmitted independently through the network, allowing dynamic sharing of network bandwidth. It supports data rate conversion and priority handling. Packet switching can use either a datagram approach, treating each packet independently, or a virtual circuit approach, pre-establishing routes for packets.
Circuit switching directly connects the sender and receiver through a dedicated physical path. Message switching transmits entire messages from node to node without a dedicated path. Packet switching breaks messages into packets that can take different routes to the destination and are reassembled, providing more efficient use of bandwidth than circuit switching.
Circuit switching directly connects the sender and receiver through a dedicated physical path. Message switching transmits entire messages from node to node without establishing a dedicated path. Packet switching breaks messages into packets that can take different routes to the destination and are reassembled, allowing for more efficient use of bandwidth but introducing complexity.
This document discusses network topologies, switching, and routing algorithms. It defines different network topologies including mesh, star, bus, ring, tree, and hybrid topologies. It also describes hubs, switches, circuit switching, message switching, packet switching, datagram networks, and virtual circuit networks. For routing algorithms, it explains distance vector routing which uses hop count as the routing metric and link state routing which uses weighted metrics to calculate the shortest path.
The document provides information about ad-hoc networks, including their characteristics, applications, design issues, and routing protocols. Some key points:
- Ad-hoc networks are infrastructure-less and use multi-hop wireless links between mobile nodes, requiring distributed routing protocols. They are suitable for situations requiring quick deployment like emergencies or military operations.
- Challenges for routing in ad-hoc networks include the dynamic topology, limited bandwidth and energy of nodes, and lack of a centralized entity. Traditional link-state and distance-vector routing protocols are examined.
- Popular link-state protocols like OSPF work by flooding link-state information to build a shared topology database and calculate the shortest path tree
The document discusses different routing methods used in computer networks, including:
- Network-specific routing which treats all hosts on the same network as a single entity in the routing table.
- Host-specific routing which explicitly defines routes to individual host addresses in the routing table.
- Default routing which uses a single default route for all unknown destinations.
It also covers routing protocols like RIP and OSPF, explaining how they establish and maintain routing tables dynamically as the network changes. Distance vector protocols like RIP propagate full routing tables between routers, while link-state protocols like OSPF flood link state information to build independent views of the network topology.
This document discusses interconnect networks for many-core processors. It describes shared and switched network topologies, including different arbitration, routing, and switching techniques. Key points covered include distributed arbitration for shared networks, routing methods like source-based and destination-based, and switch technologies like crossbars and Omega networks. Network performance factors like latency, bandwidth, and contention are also summarized. Cache coherence issues for on-chip networks are briefly discussed, along with solutions like non-uniform cache architectures and directory-based caching.
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
Switching Techniques - Unit 3 notes aktu.pptxxesome9832
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
Routing and switching are key processes in computer networks. Routing involves selecting the optimal path for data transfer from source to destination using routers and routing algorithms. There are three main types of routing: static, dynamic, and default. Switching transfers information between networks using switches and occurs at the data link layer. There are different switching techniques, including circuit switching, packet switching, and message switching, as well as different switching modes and networks like datagram and virtual circuit networks.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
- Data transmission can occur serially (one bit at a time) or in parallel (multiple bits simultaneously). Serial transmission can be synchronous (timed) or asynchronous (untimed).
- Communication direction can be simplex (one-way), half-duplex (two-way but not simultaneous), or full-duplex (two-way simultaneous).
- Protocols define rules for communication including transmission speed/mode, error checking, and more to ensure data is transmitted accurately. Common protocols control handshaking between devices to establish connections.
This document provides an overview of local area networks (LANs) including common applications, architectures, topologies, transmission media, and protocols. Some key points:
1) LANs are used for personal computer networks, connecting large backend systems, high-speed office networks, storage area networks, and interconnecting multiple local networks.
2) Common topologies include bus, ring, star, and tree. Choices consider reliability, expandability, performance and the physical layout/medium.
3) Important protocols are Ethernet at the data link layer and IEEE 802 standards for physical and MAC sublayers which define frame formats and media access control.
This document provides an overview of local area networks (LANs) including common applications, architectures, topologies, transmission media, and protocols. Some key points:
1) LANs are used for personal computer networks, connecting large backend systems, high-speed office networks, storage area networks, and interconnecting multiple local networks.
2) Common topologies include bus, ring, star, and tree. Choices consider reliability, expandability, performance and the physical layout/medium.
3) Ethernet originally used coaxial cable but now focuses on twisted pair cabling. Fiber optic cables provide high speeds but are more expensive to install.
4) The protocol architecture includes the physical, data link
This document summarizes key points from Chapter 15 of William Stallings' book "Data and Computer Communications", 7th Edition. It discusses the applications and architectures of local area networks (LANs). The main applications covered are personal computer LANs, back-end networks, storage area networks, and high-speed office networks. Common LAN topologies like bus, ring, star and their characteristics are explained. Issues around transmission media, protocols, and network devices like bridges, hubs and switches are also summarized at a high level.
This document discusses various internet network technologies and protocols. It describes wide area networks that connect across large geographical areas using circuit switching, packet switching, frame relay, or asynchronous transfer mode. Packet switching breaks data into packets that are transmitted individually over the network, while circuit switching establishes a dedicated communications path. Frame relay and ATM aim to improve on packet switching by reducing overhead. The document also discusses local area networks, protocol architecture, protocol data units, standards organizations, and tasks to research standards and translate sections of a reference book.
Here are short notes on X.25, ATM, and Frame Relay:
a. X.25 - X.25 is a protocol suite for packet switched WANs. It establishes switched virtual circuits between DTE devices using X.121 addressing. X.25 uses LAPB for data link layer and PLP for network layer. It provides reliable data transfer over public networks.
b. ATM - Asynchronous Transfer Mode is a cell switching and multiplexing technology designed for B-ISDN. It uses fixed size 53 byte cells and establishes permanent virtual circuits between endpoints. ATM supports real-time multimedia traffic using constant bit rate, variable bit rate and available bit rate.
c. Frame Relay -
Networking and Internetworking Devices21viveksingh
This document provides information on various networking and internetworking devices. It discusses hubs, which connect multiple networking cables together but do not amplify or filter signals. It covers bridges, which operate at the physical and data link layers to filter traffic between network segments. Routers are described as connecting LANs and WANs by routing packets based on logical addresses using routing tables. Gateways link different network types and protocols by translating between formats. Finally, switches and brouters are introduced, with switches offering intelligence beyond hubs to reduce congestion, and brouters combining routing and bridging capabilities.
This document provides an overview of communication networks and protocols. It discusses circuit switching and packet switching, including store-and-forward operation and pipelining in packet switching. It also summarizes layered network architecture, with an emphasis on the TCP/IP model including the Internet, transport, network, link and physical layers. Key protocols like IP, TCP and UDP are introduced along with examples of Internet applications.
Dc ch10 : circuit switching and packet switchingSyaiful Ahdan
This document discusses different communication switching techniques for networks, including circuit switching and packet switching. Circuit switching establishes a dedicated communication path between stations but is inefficient for bursty data traffic. Packet switching divides messages into packets that are transmitted independently through the network, allowing dynamic sharing of network bandwidth. It supports data rate conversion and priority handling. Packet switching can use either a datagram approach, treating each packet independently, or a virtual circuit approach, pre-establishing routes for packets.
Circuit switching directly connects the sender and receiver through a dedicated physical path. Message switching transmits entire messages from node to node without a dedicated path. Packet switching breaks messages into packets that can take different routes to the destination and are reassembled, providing more efficient use of bandwidth than circuit switching.
Circuit switching directly connects the sender and receiver through a dedicated physical path. Message switching transmits entire messages from node to node without establishing a dedicated path. Packet switching breaks messages into packets that can take different routes to the destination and are reassembled, allowing for more efficient use of bandwidth but introducing complexity.
This document discusses network topologies, switching, and routing algorithms. It defines different network topologies including mesh, star, bus, ring, tree, and hybrid topologies. It also describes hubs, switches, circuit switching, message switching, packet switching, datagram networks, and virtual circuit networks. For routing algorithms, it explains distance vector routing which uses hop count as the routing metric and link state routing which uses weighted metrics to calculate the shortest path.
The document provides information about ad-hoc networks, including their characteristics, applications, design issues, and routing protocols. Some key points:
- Ad-hoc networks are infrastructure-less and use multi-hop wireless links between mobile nodes, requiring distributed routing protocols. They are suitable for situations requiring quick deployment like emergencies or military operations.
- Challenges for routing in ad-hoc networks include the dynamic topology, limited bandwidth and energy of nodes, and lack of a centralized entity. Traditional link-state and distance-vector routing protocols are examined.
- Popular link-state protocols like OSPF work by flooding link-state information to build a shared topology database and calculate the shortest path tree
The document discusses different routing methods used in computer networks, including:
- Network-specific routing which treats all hosts on the same network as a single entity in the routing table.
- Host-specific routing which explicitly defines routes to individual host addresses in the routing table.
- Default routing which uses a single default route for all unknown destinations.
It also covers routing protocols like RIP and OSPF, explaining how they establish and maintain routing tables dynamically as the network changes. Distance vector protocols like RIP propagate full routing tables between routers, while link-state protocols like OSPF flood link state information to build independent views of the network topology.
This document discusses interconnect networks for many-core processors. It describes shared and switched network topologies, including different arbitration, routing, and switching techniques. Key points covered include distributed arbitration for shared networks, routing methods like source-based and destination-based, and switch technologies like crossbars and Omega networks. Network performance factors like latency, bandwidth, and contention are also summarized. Cache coherence issues for on-chip networks are briefly discussed, along with solutions like non-uniform cache architectures and directory-based caching.
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
Switching Techniques - Unit 3 notes aktu.pptxxesome9832
In large networks, there are multiple paths between senders and receivers. Information can be switched using circuit switching, message switching, or packet switching. Circuit switching establishes a dedicated connection for the duration of a call. Message switching stores and forwards entire messages without dedicated connections. Packet switching breaks messages into packets that travel over multiple paths and are reassembled at the destination, allowing for more efficient use of bandwidth than circuit or message switching.
Routing and switching are key processes in computer networks. Routing involves selecting the optimal path for data transfer from source to destination using routers and routing algorithms. There are three main types of routing: static, dynamic, and default. Switching transfers information between networks using switches and occurs at the data link layer. There are different switching techniques, including circuit switching, packet switching, and message switching, as well as different switching modes and networks like datagram and virtual circuit networks.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
2. Switching mechanism
• How a packet/message passes a switch
• Traditional switching mechanisms
– Packet switching
• Messages are chopped into packets, each packet is switched independently.
– E.g. Ethernet packet: 64-1500 bytes.
• The switching happens after the whole packet is in the input buffer of a switch.
– Store-and-forward
– Circuit switching
• The circuit is set up first (the connection between the input and output ports
alone the whole path are set up).
• No routing delay
• Too much start-up overheads, no suitable for high performance
communication.
– Packet switching for computer communications and circuit switching
for telephone communications.
3. Switching mechanism
• Traditional packet switching
– Store-and-Forward
• A switch waits for the full packet to arrive before
sending it to the next switch
• Application: LAN (Ethernet), WAN (Internet routers)
– Drawback: packet latency is proportional to the
number of hops (links).
• Latency is not scalable with packet switching
4. Switching mechanism
• Switching for high performance communication:
cut-through (switching/routing)
– Packet is further cut into flits.
• Flit size is very small, e.g. 4 bytes, 8 bytes, etc.
• A packet will have one header flit, and many data flits.
– A switch examines the header (header flit) and
forward the message before the whole packet arrives.
– Pipeline in the unit of flits.
– Application: most high-end switches (InfiniBand,
Myrinet, also used in all MPP machines).
5. Store-and-forward vs. cut-through
• Time = h (n/b + D) Time = n/b + D h
• D is the overhead for preparing to send one flit. The
latency is almost independent of h with cut-through
switching
– Crucial for latency scalability.
6. Cut-through routing variation
• Cut through routing: when the header of a message is blocked, the whole message
will continue until it is buffered in the blocked router.
– Need to be able to buffer multiple packets
– High buffer requirement in routers
– Eventually, when all buffers are full, the sender will stop sending.
• Wormhole routing
– Cut through routing with buffer for only one flit for each channel
– Minimum buffer requirement
– Each channel has the flow control mechanism.
– when the header is blocked, the message stop moving (the message is buffed in a distributed
manner, occupying buffers in multiple routers).
7. Contention and link level flow
control
• Two messages try to use the same outgoing link
– One needs to either buffered or droped.
• Wormhole networks try to block in place: link-level flow control.
– A message may occupy multiple links.
– Cut through routing has the same effect when more data are in the
network.
• This kind of networks are also call lossless networks.
– No packet is ever dropped by the network.
– Is the Internet lossless? Which one is better, lossy or lossless network?
8. Lossless network and tree
saturation
• Lossless networks have very different congestion
behavior from lossy networks such as the
Internet
– In a lossy networks, congestion is limited to a small
region.
– In a lossless network with cut-through or wormhole
routing, congestion will spread to the whole network.
• Messages that do not use the congested link may also be
blocked.
• This is known as tree saturation.
• The congested link is the root of the tree.
12. Lossless network and deadlock
• Wormhole routing: hold on to the buffer
when blocked.
• Hold and wait this is the formula for
deadlock.
• Solution?
13. Virtual channels
• A logical channel can be realized with one
buffer and the related flow control
mechanism.
– At one time, one message use the link.
• We can allow multiple messages to share the
link by having multiple virtual channels:
– Each virtual channel has one buffer with the
related flow control mechanism.
– The switch can use some scheduling
algorithm to select flits in different buffer for
forwarding.
– With virtual channel, the train slows down,
but not stops when there is network
contention.
• Virtual channels increase resource sharing
and alleviate to the deadlock problem.
14. Routing
• Routing algorithms: determine the path from the
source to the desintation
• Properties of routing algorithm:
– Deterministic: routes are determined by source and
destination pair, but other states (e.g. traffic)
– Adaptive: routes are influenced by traffic along the
way.
– Minimal: only selects shortest path.
– Deadlock free: no traffic pattern can lead to a
deadlock situation.
15. Routing mechanism
• Source routing: message include a list of
intermediate nodes (or ports) toward the
destination. Intermediate routers just lookup and
forward.
• Destination based routing: message only includes
the destination address. Intermediate routers use
the address to compute the output port (e.g. dest
addr as an index to the forwarding table).
– Deterministic: always follow the same path
– Adaptive: pick different paths to avoid congestion
– Randomized: pick between several good paths.
16. Routing algorithms
• Regular topology
– Dimension order routing with k-ary n-cube
• Ring, mesh, torus, hypercube
• Resolve the address differences in each dimension one
after another
– Tree routing (no routing issue)
– Fat-tree?
• Irregular topology
– Shortest path (like the Internet)
19. Deadlock free routing
• Make sure that the loop can never occur
– Put constraints on how paths can be used to route traffic.
– Use infinite virtual channels.
• Deadlock free routing example:
– Up/down routing
• Select a root node and build a spanning tree
• Links are classified as up links or down links
– Up links: from lower level to upper level
– Down links: from upper level to lower level
– Link between nodes in the same level: up/down based on node number
• Path: all up link, all down link, a sequence of up links followed by a
sequence of down links
– No up link can follow a down link.
– Why deadlock free?
– Can we have disconnected nodes?
20. Deadlock free routing
• Is X-Y routing on mesh deadlock free?
• How about adaptive routing on mesh
that always use the shortest paths?
21. Network interface design issue
• The network requirement for a typical high performance
computing user
– In-order message delivery
– Reliable delivery
• Error control
• Flow control
– Deadlock free
• Typical network hardware features
– Arbitrary delivery order (adaptive/multipath routing)
– Finite buffering
– Limited fault handling
• Where should the user level functions be realized?
– Network hardware? Network systems? Or a
hardware/systems/software approach?
22. • Where should these functions be realized?
– How does the Internet realize these functions?
• No deadlock issue
• Reliability/flow control/in-order delivery are done at the TCP
layer?
• The network layer (IP) provides best effort service.
– IP is done in the software as well.
– Drawbacks:
• Too many layers of software
• Users need to go through the OS to access the communication
hardware (system calls can cause context switching).
23. • Where should these functions be realized?
– High performance networking
• Most functionality below the network layer are done by
the hardware (or almost hardware)
– This provide the APIs for network transactions
• If there is mis-match between what the network
provides and what users want, a software messaging
layer is created to bridge the gaps.
24. Messaging Layer
• Bridge between the hardware functionality and the
user communication requirement
– Typical network hardware features
• Arbitrary delivery order (adaptive/multipath routing)
• Finite buffering
• Limited fault handling
– Typical user communication requirement
• In-order delivery
• End-to-end flow control
• Reliable transmission
26. Communication cost
• Communication cost = hardware cost + software
cost
– Hardware message time: msize/bandwidth
– Software time:
• Buffer management
• End-to-end flow control
• Running protocols
– Which one is dominating?
• Depends on how much the software has to do.
27. Network software/hardware
interaction -- a case study
• A case study on the communication
performance issues on CM5
– V. Karamcheti and A. A. Chien, “Software
Overhead in Messaging layers: Where does the
time go?” ACM ASPLOS-VI, 1994.
28. What do we see in the study?
• The mis-match between the user requirement
and network functionality can introduce
significant software overheads (50%-70%).
• Implication?
– Should we focus on hardware or software or
software/hardware co-design?
– Improving routing performance may increase software
cost
• Adaptive routing introduces out of order packets
– Providing low level network feature to applications is
problematic.
29. Summary
• In the design of the communication system,
holistic understanding must be achieved:
– Focusing on network hardware may not be
sufficient. Software overhead is much larger than
routing time.
• It would be ideal for the network to directly
provide high level services.