LAN Connection Research Articles

Development of Interactive Framework for Aviation Part Task Trainer (APTT) for Supersonic Fighter Aircraft

In commercial, military and general aviation, safe and effective training is the important requirement, which is achieved through an Aircraft Part Task Training device (APTT). When compared with the live training, the most significant benefits of ground training is improved safety and the reduced cost of a pilot training process. Flight simulation is a multidisciplinary subject that relies on several research disciplines which have a tendency to be investigated separately and in parallel with each other. This manuscript presents a comprehensive overview of the research work done within the APTT. The development of interactive framework for Aviation part task trainer is discussed in detail. The interactive graphics display is interfaced with different pilot controls such as throttle, pedal and control stick . The acquired data is processed and displayed on multifunctional display, giving the feel of flying in the aircraft. Thus the pilot can be trained on ground reducing the risk. Graphic symbols are prepared using OpenGL software. LAN connection is established using socket program in C and MATLAB aerospace toolbox is used for taking the input through joystick.

Simple Chargers for a Small DC Micro-Grid for a Home Emergency Power System

Recently, the danger of a long blackout is discussed in Europe. Blackouts can be caused by failures in the energy distribution, errors in large power plants or even cyber-attacks. This can lead to a chain reaction and a disintegration of the mains. Longer blackouts have an extreme impact on the economy as a whole and on local households. Therefore, a small local grid at home which can supply the most important loads over some time has garnered increasing interest. With a small direct current (DC) grid, critical loads such as for deep freezers and refrigerators can be supplied, and some LED lights can be used in the evening or at night. Solar generators (panels) can be used to charge energy storage devices, e.g., batteries. A DC grid can not only be used in the case of an emergency, but can also be used to reduce energy consumption out of the public mains and reduce energy bills. The architecture of the household emergency DC grid is discussed; suggestions for batteries are given; two simple chargers, based on DC-DC-converters like the Buck (step-down) and on the Boost (step-up) converters, are shown; dimensioning suggestions are given; and simple, robust controllers, a P-controller with disturbance feedforward and a hysteresis controller, are treated and tested via simulations. The goal of the paper is to show a simple autonomous home energy system without an external fieldbus, LAN or internet connection with special focus on simple charger topologies.

A Congestion Display System Using the Information of Wireless LAN Connection and Its Improvement

A Congestion Display System Using the Information of Wireless LAN Connection and Its Improvement

Client Aware Scalable Cloudlet to Augment Edge Computing with Mobile Cloud Migration Service

<p class="0abstract">Computing with mobile is still in its infancy due to its limitations of computational power, battery lifetime and storage capacity. These limitations hinder the growth of mobile computing, which in-turn affects the growth of computationally intensive applications developed for the mobile devices. So in-order to help execute complex applications within the mobile device, mobile cloud computing (MCC) emerged as a feasible solution. The job of offloading the task to the cloud data center for storage and execution from the mobile seems to gain popularity, however, issues related to network bandwidth, loss of mobile data connectivity, and connection setup does not augment well to extend the benefits offered by MCC. Cloudlet servers filled this gab by assisting the mobile cloud environment as an edge device, offering compute power to the connected devices with high speed wireless LAN connectivity. Implementation constraints of cloudlet faces severe challenges in-terms of its storage, network sharing, and VM provisioning. Moreover, the number of connected devices of the cloudlet and its load conditions vary drastically leading to unexpected bottleneck, in which case the availability to server becomes an issue. Therefore, a scalable cloudlet, Client Aware Scalable Cloudlet (CASC) is proposed with linear regression analysis, predicting the knowledge of expected load conditions for provisioning new virtual machines and to perform resource migration.</p>

Design and Realization of a LAN Connectivity Test Circuit

The simple network cable tester can only test one network cable at a time. When multiple network lines need to be tested, there are problems such as a long time, low accuracy, prool efficiency, and unable to display visually.A multi-network test circuit is developed and designed based on the principle of network cable testing on this paper. The principle of the simple network cable tester is briefly analyzed. The overall design idea, circuit design, and working principle of the LAN connectivity test circuit are explained in detail. The circuit characteristics are summarized. The actual application verification is performed during the management and maintenance of the unit LAN. The application results show that : this circuit has the characteristics of stable operation, simple operation, safety and reliability, convenient maintenance, and intuitive display. It improves the speed of network cable testing, increases the visual display of test results, improves the efficiency of network cable testing, and has achieved good application results.

Software-Based Validation of the Differentiation Scheme for Ethernet and Wireless LAN Access Network Types Using an End-to-End Approach

Different access network types are characterized by a variety of attributes which include link bandwidths, physical media, capacity, and reliability. Therefore, the question of accurately identifying whether the sender uses a wired ethernet connection or a wireless LAN connection comes into place. This article aims to analyse, simulate, validate, and improve the existing classification scheme which is based on measuring entropy of packet pair inter-arrival times and median. A riverbed modeller (former OPNET) is used for simulating the different scenarios. Small-scale experiment conducted on campus at the Nazarbayev University (NU) validates the insignificance of the packet probe size chosen for the classification.

A Design Methodology of an Embedded Motion-Detecting Video Surveillance System

Malaysia urbanization rate has been growing fast due to rapid development and modernization (Economy Planning Unit, 2015) (World Bank, 2015). With the fast growing urban population, the property crimes associated also rises at an alarming rate (United Nations Human Settlements Program, 2007) ( Mohit Mohammad Abdul, Elsawahli H. Mohamed Hassan, 2015) (Ministry of Home Affairs, 2015). Video surveillance system is one of the trusted and efficient security systems to protect people and property against criminal (Varij Ken, 2015). Three problems and issues regarding current video surveillance system are functionality, flexibility and efficiency. The aim of this project is to design and develop an embedded motion detecting video surveillance system and to produce a functioning prototype as the final result to solve these problems. In order to achieve the aim of this project, three objectives are set to be attained. These objectives are to design and develop a motion detection algorithm based on OpenCV library functions using camera as sensor, to process and execute the algorithm using an embedded micro-computer and to compare its processing performance with a PC and to enable wireless user alert using LAN and internet connection. The first objective is achieved as the motion detection algorithm designed and developed based on background subtraction method using camera sensor and openCV library function is proven to functioning well in detecting for motion changes. The algorithm performs successfully both in BeagleBone Black module and PC and is able to deliver outputs required for embedded motion detection video surveillance system. The second objective is achieved as BeagleBone Black (BBB) module, a micro-computer embedded system is used as main processor for the embedded motion-detecting video surveillance system. The BBB module is able to process and execute the motion detection algorithm designed with image processing functions from OpenCV library. The third objective is achieved as embedded motion-detecting video surveillance system is equipped with wireless user alert function using local area network and internet connection. The system is able to send real-time alert to the user via email attached with the image captured and detected as a threat by the system.

Wireless LAN based Mobile Attendance System (WL-MAS)

In any education system, attendance of students is the first and foremost thing. Apart from academic compulsion, it reflects trust and belongingness of the students in system. In current scenario with large number of students and modern teaching equipments, the methodology of attendance keeping and maintenance needs to be changed. Hence, we have developed a prototype system using PHP/MySQL in which attendance is marked via mobiles that use wireless LAN connectivity through Access Points. The attendances so marked are stored on to a server. From the stored data, the reports of the students (regarding status: regular, short or condone) are generated. The developed system is tested in class room environment at G.B. Pant University of Ag. & Technology during teaching and is found to be effective. This system can be easily customized as per attendance system of any other Institute/University.

Implementation of Server Room HVAC Monitoring System using Web-Based Raspberry Pi (Case Study at PT Rahajasa Media Internet Surabaya)

The server room is a room that contains the server computer installation or where the main equipment for the server computer is placed. Lack of supervision and monitoring from employee server room conditions is one of the factors causing damage to existing devices. Therefore a monitoring system was created to monitor the server room periodically using web to make it easier for employees to monitor the server room. The system will automatically send notification to telegram when the temperature or dust particles exceed the specified range. The purpose of this study was to test the hvac monitoring system in server room, test the temperature and dust readings on the server room hvac monitoring system, know and calculate the value of the suitability and accuracy of the server room hvac monitoring tool, and to test the QoS of web server on monitoring the server room hvac. The result is the system able to read the server room temperature in range 18°C - 27°C, can read the increase in dust particles when there's activity in the server room up to the range 0cf - 1500cf and when in normal conditions it reads up to the range 0cf-1000cf, For the sensor accuracy, the total error rate is 0.79%, and QoS when using a LAN connection get the largest delay 410.084ms, the biggest throughput is 601bits/s, and the highest packet loss is 0.16%, while when using wifi connection the biggest delay is 410.608ms., the largest throughput 647 bits/s, and the highest packet loss 0.12%.

VLAN-based LAN Network Management Comparison using Cisco and Brocade

Abstract— The need for security and convenience in carrying out data requires all users to be able to create a safer network, both in terms of data communication and in terms of sharing internet connection lines. The effectiveness of performance in work is always required to be able to work quickly and on time without the constraints of one of the high data traffic that causes problems in network devices in one building. Which ultimately causes all work to be hampered in its completion. With the management of VLANs in a LAN connection, it will be able to parse problems especially in terms of data communication and logical data transmission. (Abstract)Keywords: LAN, VLAN, Network

Reliability of ROS Networked Mobile Robots

When working remotely with mobile robotics, a reliable wireless communication network becomes essential, especially in large operating regions. As most teleoperated robots rely on standard Wi-Fi communication, network behavior has a crucial effect on autonomous robot control. The main goal of this research is to measure and diagnose the system reliability, roaming issues, and bottlenecks of such data transmission. To study these significant factors, two measurement scenarios were conducted. Measurements consist of two Wi-Fi access points (AP) and a TurtleBot II robot used in two different system set-up configurations. In the first configuration, two APs are connected in bridge mode (LAN connection) and in the second configuration the APs are connected in WDS bridge (Wireless Data Distribution) mode. This article presents the results of Robot Operating System (ROS) IEEE 802.11 network measurements in roaming mode, in wireless bridge mode, and in an extended coverage area employed in WDS mode. Results of data transmission measurements, configurations, and evaluation of the entire system are also presented. All the measurements utilize the Open Cloud Robotic Platform (OpenCRP)1 an open-source cloud robotics ecosystem based on service-oriented PaaS architecture using the Ubuntu Linux operating system.

Monitoring and Control of Component Transfer and Packing through Conveyors Using PLC, SCADA and Mobile Application

The main objective of the project is to monitor and control the components that are being carried over the belt conveyers using PLC, SCADA and Android Mobile Application. The conveyer is controlled through the PLC programming for its control processes. SCADA and MOBILE APPLICATION are used to monitor the completed component that is passed through the conveyer at any specified time. Power reduction and energy utilization is minimized using Efficient PLC Programming. The entire process is Monitored and Controlled remotely using SCADA. The Report generation for the Conveyer process is programmed in SCADA like Conveyer Cycle time, Conveyer Idle Time and these data can be automatically saved in the Excel Data format (Data Logging Process). The whole process can be controlled using the Android mobile application in which the conveyer is controlled wireless in a Particular region of the Industry. The controllable range of the conveyor using the mobile application can also be extended to a wide range (apart from the industry premises) using multiple LAN connections. Where older automated conveyor systems would use in PLC and SCADA.

Performance comparison of various modulation schemes over free space optical (FSO) link employing Gamma–Gamma fading model

Free Space Optics (FSO) is an emerging line-of-sight technology intending to provide last-mile solution to the network problem where fiber technology is not feasible. The use of Wavelength Division Multiplexing (WDM) technology for FSO is inspired due to the demand for broadband communication. This technique has brought a revolution because the system data capacity is enhanced by simply adding more number of channels and reducing the channel spacing without having the need of more than one FSO link. By reducing the channel spacing to an appropriate level, Dense Wavelength Division Multiplexing (DWDM) based FSO systems are also be attained and are reported by various research works. FSO finds applications in vast areas like backhaul networks for cellular communication, disaster recovery, LAN–LAN connectivity, high-definition TV, MAN-extension, video transmission, medicine industry and surveillance. However, its usage is limited due to the serious challenges of link vulnerability to weather and atmospheric turbulence-induced fading. This paper is based on a WDM-FSO system. An 8-channel WDM based FSO system is proposed and performance is evaluated on widely accepted modulation schemes under weak, moderate and strong turbulence conditions. Gamma–Gamma fading model is employed for atmospheric turbulence modelling. The system is simulated on OptiSystem 14.0.

AUTOMATED SWIM (SINGLE WINDOW INFRASTRUCTURE MANAGEMENT) FOR CLOUD

Data centers manage complex server environments, including physical and virtual machines, across a wide variety of platforms, and often in geographically dispersed locations. Information Technology managers are responsible for ensuring that servers in these increasingly complex environments are properly configured and monitored throughout the IT life cycle. They also face challenges managing the physical and virtual environments and the fact that we must centralize, optimize and maintain both. If the variation and complexity can be taken out of a process to make it more consistent, it can be automated. Through the use of virtual provisioning software, provisioning and re-purposing of infrastructure will become increasingly automatic. Staff will physically rack once, cable once, and thereafter (remotely) reconfigure repeatedly, effortlessly, as needed. An automatic infrastructure will rapidly change which servers are running what software and how those servers are connected to network and storage. It will re-purpose machines according to the real-time demands of the business. It will enable capacity to be "dialed up" or "dialed down". And it will bring up a failed server on new hardware, with the same network and storage access and addressing, within minutes. All without needing to make physical machine, cable, LAN connection or SAN access changes.

Peer‐to‐peer cooperation for GPS positioning

SummaryThis paper presents a peer‐to‐peer cooperative positioning technique together with its performance assessment. The cooperation between the two GPS receivers is realized by means of a wireless LAN connection and is significantly influenced by the accurateness of the synchronization between the two terminals. Both the outdoor‐to‐indoor and outdoor‐to‐outdoor scenarios are considered. For each scenario, we assess the satellite signal acquisition and its computational load and the performance in terms of position accuracy and time‐to‐first‐fix of the positioning procedure. Copyright © 2016 John Wiley & Sons, Ltd.

Newly Constructed Real Time ECG Monitoring System Using LabView

This paper deals with the removal of noise and base wander in the transfer of ECG data from the patients to the doctor. The process of the project is receiving ECG signals from the patient and reading the data in PC using an Arduino (an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software) board, and then the signal is subjected to the removal of noise and base wander by amplification circuits in LabView (a system design software) software. Thus obtained ECG signal is sent to the doctors using an Ethernet cable or LAN connection. This enables the doctors to monitor any number of patients more accurately by sitting in a single room.

Chess Game System on Smart Mobile Terminal

Under the background that traditional Chinese culture needs to be carried forward, the author of this paper, combined with Unity3D game engine, introduces a self-developing Chinese chess game based on Android mobile platform and discusses the basic structure and core mechanics of this game system. Technologies like data transmission in the LAN, Shader of Unity3D, and touch-screen control are adopted in the game design. Through program optimization and compatible design, this game combines 3D modeling tools like Autodesk 3ds Max, utilizes network module of Unity3D and connects two mobile terminals in the LAN, thus finally realizing on-line VS play. Through the Network View component of Unity3D, LAN connection mode suitable for C/S system of Android can be created in Unity3D to achieve data and image synchronization. Test results turn out to prove that with this technology, this game system displays high performance in terms of operation and visual effects.

An overview of energy savings potentials through mobile forwarding proxy framework

Increasingly, mobile users interact with more than their primary mobile device, a trend that will likely continue with the growth of the internet of things. We introduce an application data forwarding framework, which is based on a mobile user's primary device and geared towards energy savings for the multitude of devices a mobile user interacts with. Based on the need to have a recent copy of application data available on a mobile user's primary device, e.g., a smartphone, our framework forwards, e.g., Facebook status updates, to external devices in vicinity. We provide an evaluation of the energy consumption and potentials for savings using our proposed approach by means of cost–based evaluations. Assuming that external devices could derive the data through cellular or wireless LAN connections as alternatives, we find that significant savings for the group of devices could be realised. Specifically, for an active social network account with frequent updates, we find that the external devices would be able to conserve power, while the additional burden on the primary device's battery remains reasonably low.

Identification and Investigation of the User Session for Lan Connectivity Via Enhanced Partition Approach of Clustering Techniques

This paper mainly presents some technical discussions on the identification and analyze of “LAN usersessions”. The identification of a user-session is non trivial. Classical methods approaches rely on threshold based mechanisms. Threshold based techniques are very sensitive to the value chosen for the threshold, which may be difficult to set correctly. Clustering techniques are used to define a novel methodology to identify LAN user-sessions without requiring an a priori definition of threshold values. We have defined a clustering based approach in detail, and also we discussed positive and negative of this approach, and we apply it to real traffic traces. The proposed methodology is applied to artificially generated traces to evaluate its benefits against traditional threshold based approaches. We also analyzed the characteristics of user-sessions extracted by the clustering methodology from real traces and study their statistical properties.

Technology - Development Investment and Firm Productivity in Developing Countries

This paper empirically investigates the impact of IT facilities and development investments on labor productivity to test the “productivity paradox”, the interaction effects of firm-level contextual factors on this relationship, and the determinants of productivity for Vietnamese enterprises. In contrast to most of the existing literature that mainly consider patents or R&D in the relationship with firm productivity, this study investigates actual investments in two main areas: (i) Information technology facilities; (ii) development investment capital. The balanced panel dataset, which corresponds to a strong process of integration and globalization in Vietnam during the period 2001-2005, is investigated separately for the manufacturing and commer- cial-service sectors as well as the whole economy for comparison. Applying the fixed and random effects models, my findings imply that the “productivity paradox” does not occur for R&D for all firms, for computerization for manufacturing firms, for LAN connection and Internet situation for the commercial firms. In addition, the effects of IT facilities and development investments on labor productivity significant- ly depend on contextual moderating factors