An Interactive Tool for Teaching and Learning LAN Design

2008 ◽  
pp. 1726-1740
Author(s):  
Nurul I. Sarkar
Keyword(s):  
Teaching And Learning ◽  
Local Area Network ◽  
Learning Experience ◽  
Software Tool ◽  
Local Area ◽  
Computer Networking ◽  
Area Network ◽  
Design Concepts ◽  
The Impact ◽  
Classroom Use

It is often difficult to motivate students to learn local area network (LAN) design because many students appear to find the subject rather dry, technical and boring. To overcome this problem the author has developed a software tool (named LAN-Designer) that gives students an interactive learning experience in LAN design concepts. The LAN-Designer is suitable for classroom use in introductory computer networking courses. This chapter describes LAN-Designer and its effectiveness in teaching and learning LAN design. The effectiveness of LAN-designer has been evaluated both formally by students and informally in discussion within the teaching team. The feedback from students indicates that the development and implementation of LAN-Designer were successful. It also discusses the impact of LAN-Designer on student learning and comprehension.

An Interactive Tool for Teaching and Learning LAN Design

2011 ◽  
pp. 253-271
Author(s):  
Nurul I. Sarkar
Keyword(s):  
Teaching And Learning ◽  
Local Area Network ◽  
Learning Experience ◽  
Software Tool ◽  
Local Area ◽  
Computer Networking ◽  
Area Network ◽  
Design Concepts ◽  
The Impact ◽  
Classroom Use

It is often difficult to motivate students to learn local area network (LAN) design because many students appear to find the subject rather dry, technical and boring. To overcome this problem the author has developed a software tool (named LAN-Designer) that gives students an interactive learning experience in LAN design concepts. The LAN-Designer is suitable for classroom use in introductory computer networking courses. This chapter describes LAN-Designer and its effectiveness in teaching and learning LAN design. The effectiveness of LAN-designer has been evaluated both formally by students and informally in discussion within the teaching team. The feedback from students indicates that the development and implementation of LAN-Designer were successful. It also discusses the impact of LAN-Designer on student learning and comprehension.

LAN-Designer

2008 ◽  
pp. 1741-1751
Author(s):  
Nurul I. Sarkar
Keyword(s):  
Teaching And Learning ◽  
Local Area Network ◽  
Student Evaluation ◽  
Software Tool ◽  
Local Area ◽  
Area Network ◽  
University Of Technology ◽  
Hands On ◽  
The Impact ◽  
Classroom Use

Until recently, it has been difficult to motivate students to learn about server-based local area network (LAN) design because students find the subject very technical, dry, and boring. A software tool (named LAN-Designer) has been developed at the Auckland University of Technology that gives students an interactive, hands-on experience in server-based LAN design. LAN-Designer is suitable for classroom use in introductory-level courses in server-based networking. This article describes LAN-Designer and its effectiveness as an aid to teaching and learning about LAN design. The effectiveness of LAN-Designer has been evaluated both formally by students (student evaluation forms) and informally through discussion within the teaching team. The conclusions drawn are based on survey data collected from students. The feedback from students indicates that the development and implementation of LAN-Designer were successful. The article concludes by discussing the strengths and weaknesses of LAN-Designer and its future development. The impact of LAN-Designer on students’ performance is also discussed.

A Web-Based Tool for Teaching WLAN Design Fundamentals to Undergraduates

2011 ◽  
pp. 2337-2345
Author(s):  
Nurul I. Sarkar
Keyword(s):  
Wireless Communication ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Learning Experience ◽  
Software Tool ◽  
Wireless Networking ◽  
Area Network ◽  
Web Based ◽  
Design Concepts ◽  
Networking Technologies

Wireless communication and networking courses are becoming increasingly popular in universities, polytechnical institutions, postsecondary colleges, and private training institutions around the globe. This popularity is partly because of rapid developments in wireless communication and networking technologies and the high demand for wireless networking skills in the industry worldwide. Unfortunately, motivating students to learn wireless local area network (WLAN) design is often difficult because students find the subject rather technical, and dry when presented. To overcome this problem, we have developed a Web-based software tool (named WLAN-Designer) that gives students an interactive learning experience in WLAN design concepts. The WLAN-Designer is suitable for classroom use in introductory wireless networking courses (undergraduate IT and CIS curricula). The effectiveness of WLAN-Designer has been evaluated by both students and teaching teams. The implementation of WLAN-Designer was judged to be successful because of the positive student feedback and also students scored better in the final examination. This chapter describes WLAN-Designer and its effectiveness as an aid to teaching and learning WLAN design concepts. The impact of WLAN-Designer on student learning and comprehension is also discussed.

scholarly journals Performance Analysis of Wireless Local Area Network for a High-/Low-Priority Traffic Ratio at Different Numbers of Access Categories

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 693
Author(s):  
Kvitoslava Obelovska ◽  
Olga Panova ◽  
Vincent Karovič
Keyword(s):  
Network Performance ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Large Network ◽  
Medium Access ◽  
Massive Growth ◽  
Adaptive Adjustment ◽  
The Impact

The performance of Wireless Local Area Network (WLAN) is highly dependent on the processes that are implemented in the Medium Access Control (MAC) sublayer regulated by the IEEE 802.11 standard. In turn, various parameters affect the performance of the MAC sublayer, the most important of which is the number of stations in the network and the offered load. With the massive growth of multimedia traffic, research of the network performance depending on traffic types is relevant. In this paper, we present the impact of a high-/low-priority traffic ratio on WLAN performance with different numbers of access categories. The simulation results show different impact of high-/low-priority traffic ratio on the performance of the MAC sublayer of wireless LANs depending on different network-sizes and on network conditions. Performance of the large network with two access categories and with the prevalent high-priority traffic is significantly higher than in the case of using four categories on the MAC sublayer. This allows us to conclude that the performance improvement of the large network with the prevalent high-priority traffic can be achieved by an adaptive adjustment of the access categories number on the MAC sublayer.

Analysis of electromagnetic absorption in new design of PIFA antenna using metamaterials

2021 ◽  
Author(s):  
Hamza Ben Hamadi ◽  
said ghnimi ◽  
Lassaad Latrach ◽  
Philippe Benech ◽  
Ali Gharsallah
Keyword(s):  
Human Body ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Dual Band ◽  
Area Network ◽  
Dual Band Antenna ◽  
Cubic Model ◽  
The Impact ◽  
Pifa Antenna

Abstract This paper presents the design, simulation and fabrication of a miniaturized wearable dual-band antenna on a semi-flex substrate; she is operable at 2.45/5.8 GHz for wireless local area network applications. The electrical and radiation characteristics of this proposed antenna were obtained by means of a technical of insertion of a slot to tune the operating frequencies. To study the impact of the electromagnetic radiation of the structure of the human body, it is necessary to minimize the back radiation towards the user. Therefore, in this work, a multi-band artificial magnetic conductor (AMC) was placed directly above a dual-band planar inverted F antenna to achieve a miniaturization with excellent radiation performance. The simulation results were designed and simulated using Studio commercial software (CST). A good agreement was achieved between the results of simulation and the experimental. The Comparison of measurement results indicates that the gain improved from 1,84 dB to 3,8 dB, in the lower band, and from 2,4 dB to 4,1 in the upper band, when the antenna is backed by the AMC plane. The front-to-back ratio of the AMC backed PIFA antenna was also enhanced. Then, to ensure that the proposed AMC is harmless to the human body, this prototype was placed on three-layer human tissue cubic model. It was observed that the through inclusion of plane AMC, the peak specific absorption rate (SAR) decreased to 1,45 and 1,1 W/kg at 2,45 and 5.8 GHz, respectively (a reduction of around 3,7 W/kg, compared with an antenna without (AMC).

Client-Server Computing

2011 ◽  
pp. 220-234
Author(s):  
Mahesh S. Raisinghani ◽  
Ann Shou-an Char
Keyword(s):  
Local Area Network ◽  
Local Area ◽  
Computer Networking ◽  
Area Network ◽  
Network Efficiency ◽  
Client Server ◽  
Network Connection ◽  
Database Engine ◽  
Application Programs ◽  
Server Architecture

Client-server architecture is a local area network (LAN) based computing environment in which a central database sever or engine performs all database commands sent to it from client workstations, and application programs on each client concentrate on user interface functions. Client-server computing is a phrase used to describe a model for computer networking. In this shared processing model, a server has an intelligent database engine functioning as a service on the network. This model offers an efficient way to provide data/ information and services to many users as needed. A network connection is only made when a user needs to access the information or obtain the needed service. This lack of a continuous network connection provides network efficiency. Any change made in the server is transparent to clients.

Design and Evaluation of a Web-Based Tool for Teaching Computer Network Design to Undergraduates

2011 ◽  
Vol 6 (4) ◽  
pp. 39-59 ◽  
Author(s):  
Nurul I. Sarkar ◽  
Krassie Petrova
Keyword(s):  
Network Design ◽  
Undergraduate Students ◽  
Wireless Lan ◽  
Teaching And Learning ◽  
Computer Network ◽  
Local Area Network ◽  
Positive Impact ◽  
Local Area ◽  
Area Network ◽  
Web Based

Previous studies have shown that motivating students to learn about local area network (LAN) design can be difficult when presented in the traditional lecture format. To overcome this problem, a Web-based tool (“WebLan-Designer”) was developed as an aid in teaching and learning of LAN design at the introductory level. A WebLan-Designer provides a set of learning resources (tutorials, quizzes, network modeling, network design scenarios, key terms and definitions, and review questions and answers) and assists undergraduate students in learning the basics of both wired and wireless LAN design. The tool is Internet-based and can be accessed at any time so that students can study LAN design at their own pace and convenience. This flexible learning approach contributes positively to distance education and e-learning. The effectiveness of WebLan-Designer is evaluated both formally and informally; positive student and peer feedback indicates that the design and implementation of the tool has been successful and that using WebLan-Designer may have a positive impact on student learning and comprehension.

Study of the Different Optical Filters in SAC-OCDMA System

2018 ◽  
Vol 39 (4) ◽  
pp. 381-386 ◽  
Author(s):  
H. Djellab ◽  
N. Doghmane ◽  
A. Bouarfa ◽  
M. Kandouci
Keyword(s):  
Wavelength Division Multiplexing ◽  
Local Area Network ◽  
Direct Detection ◽  
Optical Filter ◽  
Optical Filters ◽  
Local Area ◽  
Spectral Amplitude ◽  
Area Network ◽  
Code Division Multiple ◽  
The Impact

Abstract Spectral amplitude coding for optical code division multiple access (SAC-OCDMA) networks has received much attention over the last two decades. This article aims to explore the impact of encoder change on different types of optical filters, such as the Gaussian optical filter and the Bessel optical filter, for high data rates and to give an overview on importance of choosing the optimal type of optical filter according to the frequency range selected by the user is 25 and 50 GHz. SAC-OCDMA transmitter utilizes Wavelength Division Multiplexing multiplexer (WDM MUX) as an encoder, to generate a code having low cross-correlation called Random Diagonal code, and spectral direct detection as a detection technique. The change of optical filter, in WDM MUX, directly affects the performance of the system. The results show that the system for 50 GHz, with a WDM MUX, using a Gaussian optical filter has better performance compared to the optical Bessel filter and can reach a bit error rate (BER) of 10−25. SAC-OCDMA system, using a WDM MUX based on Bessel filters with a bit rate of 300Mb/s, achieves a BER of 10−28 which leads us to recommend it for second norm 25 GHz. Moreover, the power received increases by 4 dBm every 20 Km with the increase in the length of the fibre for both filters Bessel and Gaussian. Our work focuses on the two 25 and 50 GHz bands, after a study on the impact of the change of the bandwidth and the order of the different optical filters used according to the BER applied to the different networks of access, such as local area network (LAN).

scholarly journals FAKTOR-FAKTOR YANG MEMPENGARUHI INTERAKSI MANUSIA DENGAN KOMPUTER PADA SISTEM INFORMASI BERBASIS JARINGAN DI KANTOR BALAI DIKLAT INDAG SURABAYA

2007 ◽  
Vol 9 (2) ◽  
pp. 243
Author(s):  
Sonang Sitohang Sonang Sitohang
Keyword(s):  
Local Area Network ◽  
Local Area ◽  
Dominant Factor ◽  
Area Network ◽  
Variable Loading ◽  
Regional Office ◽  
Eigen Values ◽  
On Line ◽  
Object Of Study ◽  
The Impact

This study examines the impact of interaction human factors with computer used by Local Area Network (LAN) at Regional Office Surabaya Industrial and Trade Training Service. The object of study are employees which worked by LAN Service office and used primary datas non probability sampling with analysis factor throught SPSS 10,0 windows program.The corelation matrix result shows of variable population; Barlets test of Sphericity (BTS) 0,000 proved, and Kayser Meyer Oklin (KMO) 0,671 > 0,50 means sample strength enough. By rotation from 35 variables become 22 variables with cumulative percentation 64,67. Tools is the dominant factor impact of human computer interaction by Local Area Network (LAN). The contribution of variable 10,187%, with eigen values 3,573 consist of; tools by loading variable 0,813, language with loading variable 0,745 and on line by 0,661 variable loading.

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