two disadvantages of using wireless networks

... throughput of a large wireless work has been a topic of great interest A large wireless net-work can take many possible forms in practice, which in-clude large sensor networks, large ad hoc networks, ... networks, and large mesh networks A large mesh network may consist of a large number of wireless transceivers located (or approximately lo-cated) on a regular grid Such a mesh network may serve as ... 1EURASIP Journal on Wireless Communications and NetworkingVolume 2007, Article ID 26760, 11 pages doi:10.1155/2007/26760 Research Article Throughput Analysis of Large Wireless Networks with Regular

Ngày tải lên: 22/06/2014, 19:20

... learners and find out the benefits of using these games 1.2 Research goals First of all, the purposes of this study are to find out the importance and application of using games in teaching vocabulary ... point of view 40 4.4 The difficulties of using games in teaching vocabulary 45 4.5 Results of the interviews 47 Chap 5: CONCLUSION 48 5.1 A review of major ... 4: Using games in teaching vocabulary benefits students' learning process 10 Table 5: The difficulties of using games in teaching-learning vocabulary of elementary students 11 Figure 6: The disadvantages

Ngày tải lên: 08/07/2022, 22:27

... reasons of using Code-switching 35 Table 6 Descriptive Statistics of Total Mean Scores of the advantages of using Code-switching 36 Table 7 Item-Total Statistics of the advantages of using ... 37 Table 8 Descriptive Statistics of Total Mean Scores of the disadvantages of using Code-switching 38 Table 9 Item-Total Statistics of the disadvantages of using Code-switching 39 Trang 10viii ... 2.2.1 Definitions of Bilingual 8 2.2.2 Code-Switching and Bilingual 8 2.3 The roles of using Code-switching 10 2.4 Advantages of using Code-switching 11 2.5 Disadvantages of using Code-switching

Ngày tải lên: 07/06/2023, 22:26

... The questionnaire consisted of eight questions advantages of using debate technique and four questions disadvantages of using debate technique The first question of the questionnaire aimed to ... advantages of using debates techique in speaking lessons in advanced classes at VNUA? 2.What are the disadvantages of using debates techique in speaking lessons in advanced classes at VNUA?Scope of the ... and disadvantages of using debate technique.Review of theoretical backgroundMastering speaking is essential for students to become effective communicators, as it involves the verbal use of language

Ngày tải lên: 06/07/2023, 21:23

... Objectives of the Study The study is aimed at advantages and disadvantages of using Google translate inEnglish Vietnamese translation process, focusing on senior of BE major at NEU.The objective of study ... natural counterpart of the targetlanguage, first in terms of meaning and subsequently in terms of style Both ofthe aforementioned definitions imply that translation needs the use of twolanguages: the ... Figure 2.4 The Strategies of Using Google Translate (Nida and Taber ,1969) 17 Chart 4.1: Percentage of people who have used Google 'Translafe 22 Chart 4.2: Percentage of how often people use Google

Ngày tải lên: 08/04/2024, 21:02

... 1MINISTRY OF EDUCATION AND TRAINING 000 HO CHI MINH CITY UNIVERSITY OF FOREIGN LANGUAGES AND INFORMATION TECHNOLOGY —- (HUFLIT) RESEARCH METHODOLOGY COURSE Advantages and Disadvantages of Using ... integration must be stressed An overview of the area of future study will contribute to the field of educational technology or e-learning by focusing on the popularization of 1Pads and laptops in various ... 2.2 The benefits of using iPad and laptops in classrooms of Huflit students 2.2.1 Improving knowledge “Have you ever heard of the saying “There’s an app for that”? The number of apps there are

Ngày tải lên: 18/10/2024, 19:54

... Research Council of Canada (NSERC), and the Automobile of the 21st Century (AUTO21) and Mathematics of Information Technology and Complex Systems (MITACS) Networks of Centers of Excellence (NCEs) ... geographic location techniques in sensor networks,” in Proceedings of the 3rd International Conference on Ad-Hoc, Mobile, and Wireless Networks (ADHOC-NOW ’04), vol 3158 of Lecture Notes in Computer Science, ... also served as a network-based technique to localize a transmitting device using two receivers of known coordinates and the transmission’s angle of arrival A significant drawback of the triangulation

Ngày tải lên: 21/06/2014, 23:20

... are of practical interest in actual wireless network deployment and provisioning The main contribution of this paper is the proposal of a two-level call admission control scheme for DS-CDMA wireless ... communication systems The problem of CAC in DS-CDMA multimedia wireless networks is very challenging due to the different quality of service (QoS) requirements of the traffic classes, traffic asymmetry ... admission control scheme for DS-CDMA wireless networks and the evaluation of its performance The proposed scheme is discussed in the context of two classes of services: real-time and nonreal-time calls

Ngày tải lên: 22/06/2014, 19:20

... implementation of the Levenberg–Marquardt algorithm for simultaneous-energy-gradient fitting using two-layer feed-forward neural networks Hieu T Nguyen-Truong, Hung M Le∗ us cr Faculty of Materials ... implementation of this Levenberg–Marquardt te version with simultaneous-energy-gradient fitting is subject to improve PES fitting quality using two-layer feed-forward neural networks There are two Ac ... Accepted Manuscript Title: An implementation of the Levenberg–Marquardt algorithm forsimultaneous-energy-gradient fitting using two-layer feed-forwardneural networks Author: Hieu T Nguyen-Truong Hung

Ngày tải lên: 16/12/2017, 02:59

... mạng cảm biến theo Duty Cycle đã thiết lập 59 Trang 11Chương 1 GIớI THIệU1.1 Giới thiệu Wireless Sensor Networks (WSNs: mạng cảm biến không dây) từ khi ra đời đến nay đã có sự phát triển nhanh ... 2 phần Firmware và software  Firmware: Phát triển phần mềm nhúng trên MCU.Các lưu đồ trạng thái, xác định và gửi, thời gian lấy frame, thời gian tính toán nhịp tim,…  Software: Sử dụng hệ ... tao ra mức điện áp offset để cộng vào mức tín hiệu của điện tim tạo ra tín hiệu có thể đọc được bằng module ADC của vi điều khiển Hình 4.10 Sơ đồ khối khuếch đại và nâng áp offset Ngõ ra của

Ngày tải lên: 23/01/2021, 11:05

... develop-ment of routing protocols for wireless ad hoc networks [1, 2] The movement pattern of mobile nodes plays an important role in the performance analysis of mobile and wireless networks Additionally, ... connection of length more than 6 hops Moreover, node speeds have a minimal effect on the length of the TCP connection in terms of number of hops for RPGM because of the strict movements of nodes ... multi-hop wireless ad hoc networks,” in Ad Hoc Networking, pp 139–172, Addison-Wesley, Reading, Mass, USA, 2001 [3] T Camp, J Boleng, and V Davies, “A survey of mobility mod-els for ad hoc network

Ngày tải lên: 21/06/2014, 11:20

... Monitoring Using Wireless Sensor Networks with Stationary and Mobile Nodes Theofanis P Lambrou and Christos G Panayiotou KIOS Research Center for Intelligent Systems and Networks, Department of Electrical ... that this approach is appropriate in the context of wireless sensor networks since it is not feasible to have an accurate global view of the state of the environment Copyright © 2009 T P Lambrou ... but also alleviates some of the traditional problems associated with static sensor networks It is envisaged that in the near future, very large scale networks consisting of both mobile and static

Ngày tải lên: 21/06/2014, 22:20

... Area Wireless Network Recently, many kinds of wireless networks have been proposed to be applied to disaster area relief operations In [3], Hiroaki et al propose and evaluate a mobile ad hoc network ... used for performance evaluation of networks The fluid as the flow of a fluid, which models mobility in terms of the mean number of users crossing the boundary of a given area Derived from transportation ... We implement two initial distributions of MNs: 40 s1,10,s10,10 Thus we can obtain four different scenarios with each of the two distributions of CI values when MNs follow each of the two initial

Ngày tải lên: 21/06/2014, 23:20

... hop being wireless Cellular phones and wireless networks using 802.11 (WI-FI) are examples of this Ad hoc networks are another type of wireless networks They are formed by a collection of nodes ... original work is properly cited Wireless networks consist of a number of nodes which com-municate with each other using high-frequency radio waves Some of these networks have a wired backbone or ... capacity of wireless networks,” IEEE Transactions on Information Theory, vol 46, no 2, pp. 388–404, 2000 [2] M Grossglauser and D N C Tse, “Mobility increases the ca-pacity of ad hoc wireless networks,”

Ngày tải lên: 22/06/2014, 00:20

... indication ofthe direction of the failure Trang 13Number of objects [ 15 ]The collection of the metrics evaluated by [15] contains a metric only concerning the number of objects, consisting of a precision ... computationframework of the measure calculation can be found Thepreparation and presentation of the resulting values areoutlined in Section 3.4 Figure 2shows an overview of thesystem The system consists of two ... effectiveness of surveillance systems is still disputed [1] One effect which is thereby often mentioned is that of crime dislocation Another problem is that the rate of crime detection using surveillance

Ngày tải lên: 22/06/2014, 00:20

... transmission of 3D geometry over lossy networks,” in Proceedings of the 8th International... of Computer and Information Science, University of Pennsylvania, Pa, USA The support of Alberta ... wired networks, we consider higher loss rates considering “shadowing” and interference in wireless networks, which could be ad hoc [12] (where hosts depend on one another to keep the network ... management schemes for wireless networks [20–24]; however, the present paper will not address the possibility of optimizing our algorithms considering these advanced wireless network management protocols.

Ngày tải lên: 22/06/2014, 00:20

... assumption of TCP-based protocols that packet error (lost or damaged) is due to network congestion is not true for wireless networks. For wireless networks, it is important to reduce the number of retransmissions ... provided the original work is properly cited. 1. INTRODUCTION One of the major advantages of wireless networks over wired networks is the ability to collect data from locations where it is very ... on Wireless Communications and Networking Volume 2007, Article ID 52492, 16 pages doi:10.1155/2007/52492 Research Article TCP Traffic Control Evaluation and Reduction over Wireless Networks Using

Ngày tải lên: 22/06/2014, 19:20

... for future wideband wireless networks,” Annals of Telecommunications,... currently a Professor and Head of the group Systems, Propagation and Radars of the Rennes Institute ... change of focus from voice to multimedia. Fourth gener- ation (4G), as for it, will be defined by the ability to integrate heterogeneous networks, especially radio mobile networks and wireless ... systems. On the other hand, the advent of such wireless commu- nication systems also depends on the use of optimized em- bedded architectures and consequently of advanced design methods. Due to increased

Ngày tải lên: 23/06/2014, 01:20

... conferences 0 10 20 30 40 50 60 70 80 ICADL 1998 ICADL 1999 ICADL 2000 ICADL 2001 ICADL 2002 ICADL 2003 # of Papers # of Papers from Asia Figure 1. Number of papers accepted in ICADL ICADL 1998 ICADL 1999 ICADL 2000 ICADL 2001 ICADL 2002 # of Papers 23 18 37 34 54 # of Papers ... 14 26 25+ 31+ # of Countries 7 7 12 12 20 # of Countries from Asi a 6 5 7 9 12 # of Institutions 17+ 14+ 31+ 33+ 55+ # of Institutions from Asia 12+ 10+ 21+ 22+ 23+ # of Academic Departments/Discipline s ... coherent view of the collection of data and a sensible set of services, there is a need for remote access mechanisms for digital library services. The simplest of these is the concept of remote searching,...

Ngày tải lên: 01/06/2014, 00:46

... ii Radio Link Performance of Third Generation (3G) Technologies For Wireless Networks Gustavo Nader (Abstract) Third generation wireless mobile communication networks are characterized ... Introduction 1.1 The Need for Third-Generation Wireless Technologies The first generation of wireless networks was primarily concerned with the provision of voice services, allowing users to transition ... One source of co-channel interference, de-correlated in time with 0 frequency offset. One source of adjacent channel interference, de-correlated in time with 200 kHz of frequency offset. One...

Ngày tải lên: 26/04/2013, 11:15