Network simulation

This paper develops an Artificial Neural Network (ANN) model based on 96 experimental data to forecast the dynamic modulus of asphalt concrete mixtures. This study applied the repeated KFold cross-validation technique with 10 folds on the training data set to make the simulation results more reliable and find a model with more general predictive power.

9p viengfa 28-10-2024 4 1   Download

A Knowledge-based Decision Support System (KB-DSS) based on a multi-stage Fuzzy Logic Controller (MS-FLC) is developed for traffic congestion management on expressways. In a case study, the KB-DSS is evaluated on a simulated network in comparison to ALINEA\Q, a popular ramp control method, across various traffic and incident situations.

15p vibecca 01-10-2024 1 0   Download

In this article, we explore the operation of the LEACH (Low Energy Adaptive Clustering Hierarchy) protocol - a protocol compatible with low-energy sources and propose a solution to improve efficiency in wireless sensor networks. The simulation results show that our solution is better in terms of the number of packets reaching the base station and the average lifetime of the sensor nodes.

9p viyoko 01-10-2024 4 1   Download

Bài báo cáo "Đánh giá hiệu năng trong mạng có kết nối không liên tục DTN" đã trình bày kiến thức cơ bản về mạng DTN với trọng tâm là các kết quả nghiên cứu về việc đánh giá giá hiệu năng của mạng thông qua một số độ đo hiệu năng là thời gian trễ trung bình của các gói dữ liệu và tỉ lệ mất gói tin.

8p xuanphongdacy09 29-09-2024 1 1   Download

In this study, we synthesized hydroxyapatite (HA) on polyvinyl alcohol/TiO2 (PVA/TiO2) in which TiO2 was prepared by the sol-gel method. HA was formed by immersing the membrane in the simulated body fluid (SBF) solution. We improved the mechanical strength of the membranes by adding glutaraldehyde (GA) combining with heat treatment to cross-link the polymer network.

14p dianmotminh02 03-05-2024 3 2   Download

The purpose of the thesis is described as follows: To develop an independent simulation model for IEEE 803.2az Energy Efficient Ethernet Standards with Active and Idle modes of operations; To design and simulate a traffic source generator with exponentially distributed inter-arrival periods, and forecast the duration of the next idle periods, based in the distribution of packet arrivals; To extend the simulation of Dynamic power management in Access networks with the inclusion of prioritized traffic, which changes the duration of low power modes;…

141p runthenight07 01-03-2023 8 3   Download

This thesis proposes and implements a new and novel solution on simulators and real devices to solve the mobility problem in a VPN. The new solution adds mobility support to existing L2TP/IPsec (Layer 2 Tunneling Protocol/IP Security) tunnels. The new solution tunnels Layer 2 packets between VPN clients and a VPN server without using Mobile IP, without incurring tunnel-re-establishment at handoff, without losing packets during handoff, achieves better security than current mobility solutions for VPN, and supports fast handoff in IPv4 networks.

123p runthenight07 01-03-2023 4 3   Download

This project examines how the moving image can be used as a vehicle of memory, to express what is lost, what is gained and what changes occur in relation to personal family migratory history—a messy and ambiguous process. This practice-led research project investigates video work, using filmed materials and objects, to focus attention on the non-linear aspect of time as it is subjected to individual and collective memories. The outcomes highlight the sometimes disconnecting and unpredictable experiences of migration, storytelling, and memory.

62p runthenight04 02-02-2023 7 2   Download

(NB) Bài giảng cung cấp cho sinh viên tổng quan về kiến trúc của hệ mô phỏng Network Simulator, cách thức cài đặt và sử dụng Network Simulator, đồng thời phân tích và thảo luận một cách chi tiết về các đối tượng cơ bản như : Nút mạng, gói tin, module định tuyến, bộ đệm, liên kết,...nhằm giúp cho học viên làm chủ được hệ mô phỏng này. Nội dung của bài giảng bao gồm 11 chương và được chia thành 2 phần, mời các bạn cùng tham khảo.

131p lovebychance06 05-07-2021 30 4   Download

(NB) Tài liệu học tập Kỹ thuật mô phỏng: Phần 2 cung cấp cho sinh viên những kiến thức về: Liên kết giữa các nút mạng bằng đối tượng simpleLink, đối tượng mô phỏng gói tin Packet, Các toán tử dùng để tạo gói tin được biểu diễn bằng đối tượng Agent, đối tượng Application dùng để mô phỏng các yêu cầu truyền dữ liệu của người sử dụng. Mời các bạn cùng tham khảo.

102p lovebychance06 05-07-2021 33 4   Download

Research and improve scheduling admission control mechanism to enhance QoS based on incoming burst rate prediction at core node to improve scheduling efficiency for low QoS bursts but still ensure a level of service quality for high QoS bursts. The effectiveness of the scheduling admission control mechanism was valued through simulation and mathematical analysis.

26p gaocaolon12 18-06-2021 26 3   Download

Software-defined networking (SDN) represents a new structure of computer network that simplifies and improves network management by splitting the control plane and data plane. Since SDN is regarded as a new research issue, the application of SDN in practice faces some barriers. Most network devices such as routers and switches that implement SDN functionalities are expensive. An alternative solution in SDN research and experiments is to use network emulators. By using Mininet, an open source network emulator, this study simulates SDN implementations in different environments.

13p nguaconbaynhay10 19-02-2021 26 1   Download

This work presents a molecular dynamics simulation (MDS) of CaSiO3 glass using Born–Mayer–Huggins potentials. The structural organization and structural phase transition under compression as well as network structure of CaSiO3 are clarified through analysis and visualization of molecular dynamics simulation data.

11p tamynhan9 02-12-2020 14 3   Download

The additional network-modifying cation oxide breaking up this network by the generation of nonbridging O atoms and it has a slight effect on the topology of SiOx and OSiy units. Moreover, the diffusion of network- former atom in sodium-silicate melt is anomaly and diffusion coefficient for sodium atom is much larger than for oxygen or silicon atom. The simulation proves two diffusion mechanisms of the network-former atoms and modifier atoms.

10p tamynhan6 14-09-2020 16 4   Download

To clarify the local environment of atoms, we apply the oxygen simplex (OS) which is characterized by the size, forming oxygen atom types and the number of sodium atoms located inside the OS. The simulation shows that the liquid comprises the Si-O network and sodium atoms are distributed through different OS types forming by four O atoms.

8p tamynhan6 14-09-2020 12 1   Download

Colloidal gels are space-spanning networks that form solids at dilute particle volume fractions. The kinetic process of gelation is central to understand the flow of complex fluids. Here, we report a simulation study of colloidal gelation of anisotropic colloids with attractive Lennard Jones potential.

8p tamynhan6 14-09-2020 15 1   Download

This paper intends to present the System Dynamics (SD) as a novel method to simulate the thrust force developed during drilling of GFRP composites. Good quality holes are extremely fundamental so as to accomplish equally good joints amid creation of components prepared from composite for better execution.

9p lucastanguyen 01-06-2020 11 2   Download

The article is devoted to the development of technological processes operators simulators used to train operational personnel skills of technological processes management of industrial enterprises.

5p guineverehuynh 18-06-2020 28 5   Download

Scenario studies simulate the whole fuel cycle over a period of time, from extraction of natural resources to geological storage. Through the comparison of different reactor fleet evolutions and fuel management options, they constitute a decision-making support.

15p christabelhuynh 30-05-2020 20 2   Download

Bài báo này xem xét đến tác động của tấn công Blackhole lên hiệu năng của mạng WSN khi dùng giao thức định tuyến AODV (Ad-hoc On-demand Distance Vector Routing) [1]. Trong báo cáo này, tấn công Blackhole sẽ được mô phỏng bằng Network Simulator 2 (NS-2) và đo tỉ lệ phân phát gói, tỉ lệ mất gói, năng lượng còn lại của các node trong trường hợp không có và có tấn công Blackhole. Giải pháp IDSAODV [2] (mở rộng của AODV) chống tấn công Blackhole cũng được mô phỏng sử dụng NS-2.

10p singwell 13-03-2020 25 2   Download