denial of service in sensor networks pdf

... 5Department of Telecommunication SystemsSchool of Engineering Blekinge Institute of Technology SWEDEN Trang 6© 2006 Stefan ChevulDepartment of Telecommunication Systems School of Engineering Publisher: ... perception of a networked service Thus, the goal of thisthesis is directed towards gaining a better understanding of how the networkinfluences an application’s perception of QoS by investigating the ... link was not reached Finally, the thesis discusses the suitability of wireless networks for differentmobile services, since the influence of the network on the application-perceivedQuality of Service

Ngày tải lên: 18/10/2013, 12:15

... 18Quality of InformationThe main goal of operation of sensor networks is collection of informationabout events and phenomena happening in the area where the sensors aredeployed Therefore, in deciding ... common type of such shared infrastructure havebeen computer networks Because of this reason the most of the original re-search in the area of Quality of Service was done in the area of networks ... Engineering National University of Singapore April 2008 Trang 21 Introduction 41.1 Overview of Quality of Service 5 1.2 Application-level Quality of Service 6 1.3 Overview of Sensor Networks

Ngày tải lên: 11/09/2015, 14:22

... problem of applying classical kernel machines to distributed learning in sensor networks is that the order of the resulting models scales linearly with the number of deployed sensors and measurements ... quadratic in the routing distance, and linear in the number of bits sent The proposed algorithm transmits information between neighboring sensors and requires the transmission of a small amount of information ... reproduction in any medium, provided the original work is properly cited Wireless sensor networks rely on sensor devices deployed in an environment to support sensing and monitoring, including temperature,

Ngày tải lên: 21/06/2014, 17:20

... number of service sensors as sacrifices for disseminating keying information to worker sensors in the vicinity Worker sensors are in charge of normal network operations such as sensing and reporting ... Networking encrypting a shared key ks between a service sensor and itself in secure channel establishment, decoding the keying information obtained from the associated service node in keying information ... sensor network consisting of two different types of sensors, namely, worker nodes and service nodes Since the number of service sensors is expected to be much smaller than that of the worker sensors,

Ngày tải lên: 21/06/2014, 20:20

... producers of Wi-Fi suggest using WPA in preshared key only in the home of the SOHO environment or in environments where there is a low proba-bility of attempting attacks on security [8,9] During 2002, ... EAP-TLS and PEAP) The third type consisted of spoofing of 4 types of EAP protocol messages So in this case the possibility of hacking referred to (i) flooding associate requests or EAOPL-start packets ... outlined in 2002, except problems at-tached to disassociate or deauthenticate requests, have been avoided in the following release of WPA and in WPA2 In 2003, in order to show the vulnerability of

Ngày tải lên: 22/06/2014, 22:20

... role among sensors to avoid draining the battery of a particular set of sensors in the network [10] Ensuring that all nodes be-come CHs the same number of times, each node will be CH once inNTOT/ ... nodes have not all the same role in the network [25,26] Finally, in the third kind of pro-tocols, sensors exploit the knowledge of their position in the network, obtained, for example, through GPS ... amount of data trans-mitted by nodes to the CHs First of all, we want to point out that the random changing of the CHs can mitigate the hidden terminal problem In fact, in every round in LEACH

Ngày tải lên: 23/06/2014, 00:20

... Examples of location-aware informa-tion are tourist informainforma-tion, shows and events in the surrounding, informainforma-tion on shops/restaurants in the area, and so on 1.1.2 Wireless sensor networks ... without interrupting her applications Implementing this sort of ‘network handoff’ is a very challenging task – Definition of a feasible business model : Currently, accounting in wireless networks ... approaches introduced in the literature, the reader should bear in mind that what is reported in this book is a picture of this research field taken at the beginning of year 2005 Audience This book is intended

Ngày tải lên: 27/06/2014, 00:20

... Conservation of protein interactions<p>The conservation of protein-protein interaction networks can be examined by mapping human proteins to yeast and other model organisms, revealing that protein ... proteins, eIF-2 complexes, the origin recognition complex (ORC) and mini- Conservation of interacting proteins by degreeFigure 3 Conservation of interacting proteins by degree. (a) Each protein in ... Looking across the entire range of protein degrees, an average of 81% of the human proteins are con- served in mice - a number that increases with increasing degree. Similarly, on average, 59% of

Ngày tải lên: 14/08/2014, 07:21

... weighted fair queuing-based provisioning method offers effectively zero blocking and complete sharing of bandwidth Bandwidth provisioning methods also focus on maintaining QoS in terms of latency and ... Reinforcement Learning-based Provisioning 4.1 Introduction 43 4.2 Theory 44 4.2.1 Basic Concepts 45 4.2.2 Advantages of Using Reinforcement Learning 48 4.2.3 Application of Reinforcement Learning ... INTELLIGENT ADAPTIVE BANDWIDTH PROVISIONING FOR QUALITY OF SERVICE IN UMTS CORE NETWORKS TIMOTHY HUI CHEE KIN (B Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING

Ngày tải lên: 08/11/2015, 16:30

... vào Trên cơ sở Trang 5thông tin tài nguyên khả dụng được phản hồi từ nút lõi, nút biên vào thực hiện điều chỉnh một cách linh hoạt kích thước của các chùm được sinh ra nhằm đem lại hiệu quả về ... khiển được hình thành và được gửi đi trước một khoảng thời gian bù đắp (thời gian offset) Khoảng thời gian offset này cần được tính toán sao cho đủ để đặt trước tài nguyên và cấu hình các chuyển ... gói điện nhằm có thể triển khai trên các cấu trúc liên kết vòng hay lưới nhằm có thể điều chỉnh linh hoạt để đáp ứng với việc lưu lượng thay đổi Tuy nhiên, với một số hạn chế về mặt công nghệ,

Ngày tải lên: 30/03/2021, 07:01

... Puthal, and S Dutta, “Best Fit Void Filling Algorithm in Optical Burst Switching Networks,” in 2009 Second International Conference on Emerging Trends in Engineering & Technology, 2009, pp 609– 614, ... Kaheel and H Alnuweiri, “A strict priority scheme for quality-of-service provisioning in optical burst switching networks,” in Proceedings of the Eighth IEEE Symposium on Computers and Communications ... Distance Fairness Provisioning in Optical Burst Switching NetworksFair Bandwidth Allocation with Distance Fairness Provisioning in Optical Burst Switching Networks,” in 2010 IEEE Global Telecommunications

Ngày tải lên: 14/04/2021, 21:51

... Load-based Dynamic Wavelength Grouping Nhóm bước sóng động dựa trên tải LLAC Load-Level Admission Control Điều khiển chấp nhận dựa trên tải Min-EV Minimum Ending Void Khoảng trống với kết thúc ... này Tôi xin trân trọng cảm ơn sự giúp đỡ của Quý Thầy Cô trong Khoa Công nghệ Thông tin - Trường Đại học Khoa học Huế đã quan tâm, giúp đỡ, hướng dẫn trong suốt quá trình học tập Tôi xin trân ... kỳ công trình nào khác Nghiên cứu sinh Phạm Trung Đức Trang 4ii LỜI CẢM ƠN Trước hết tôi xin bày tỏ lòng biết ơn chân thành và sâu sắc đến PGS TS Võ Viết Minh Nhật và TS Đặng Thanh Chương là

Ngày tải lên: 30/06/2021, 00:36

... done in [11] These schemes can save energy and bandwidth in large sensor networks Based on information in incoming Session Messages, the Inter-cSimplex Message Thread at the sender-side maintains ... originally developed for reliable upgrade of control software in mission-critical real-time systems [1] This work extends Simplex to the domain of communication software upgrade in sensor networks ... no single point of failure This is important in sensor networks as node failures, e.g due to battery depletion, are common As discussed in [11], single-point, purely sender-based control using

Ngày tải lên: 18/10/2022, 12:43

... University of Singapore Trang 5Kee Chaing Chua Mohan Gurusamy Yong Liu Minh Hoang Phung Department of Electrical and Computer Engineering National University of Singapore Singapore Quality of Service ... which are deployed in currentbackbone networks, comprise WDM point-to-point links In thesenetworks, routers are connected by high-bandwidth WDM links At each router, all incoming Internet Protocol ... a switching stage to the input of the next switching stage In afeedback configuration, delay lines connect the output of a switch-ing stage back to the input of the same stage Long holding timeand

Ngày tải lên: 28/02/2023, 16:49

... label 4.3 Integrating Early Dropping and Wavelength Grouping Schemes Since both early dropping and wavelength grouping differentiationschemes result in inefficient wavelength utilization, the integratedscheme ... from thebottleneck link to other lightly loaded links Since the remainingcapacity of the path is determined by the bottleneck link, thealgorithm will maximise the path’s remaining capacity and allowmore ... between the benefit of using a lightly-loadedpath and the disadvantage of using a longer path Consider the traffic assignment process in a specific time win-dow T (i) Initially, in time winwin-dow T (0),

Ngày tải lên: 28/02/2023, 16:50

... thông tin về độ dài chùm và lớp ưu tiên, giúp đặt trước tài nguyên (bước sóng) tại các nút trung gian Gói điều khiển và dữ liệu được truyền riêng biệt trên các kênh khác nhau, mang lại sự linh hoạt ... định tuyến các gói tin IP trong miền quang mà không cần chuyển đổi sang miền điện tử tại mỗi nút mạng.OPS sử dụng một ma trận chuyển mạch có khả năng cấu hình lại cho từng gói tin đến, cho phép ... gói tin không vượt quá 1% Nếu xác suất mất gói tại một bộ định tuyến vượt quá mức này, yêu cầu CLDV sẽ không đạt Do đó, việc nâng cao CLDV là cần thiết cho đường truyền tốc độ cao của mạng Internet

Ngày tải lên: 13/05/2023, 07:54

... out of participating in the hop-by-hop routing process Perrig et al.[12] introduce “SPINS: Security Protocols for Sensor Networks” comprised of Sensor Network two-party data authentication, integrity ... Date-Time-Group Finally, privacy is achieved as a result of encrypting all communications. 4.3 Inserting Additional Nodes into the Network The insertion of an additional node into the existing sensor network ... operates in the base station mode of sensor communication, where the security protocol is mindful of the resource constraints of sensor networks Our application class requires mitigation against

Ngày tải lên: 14/02/2014, 16:20

... suggesting that leading companies see sustainability issues playing a larger role in shaping consumer perceptions, influencing purchasing decisions and creating a competitive advantage in the ... point: Business action is needed In order to overcome these challenges and accelerate a tipping point in the integration of sustainability into core business, CEOs believe that a number of 'must-have' ... was just emerging on the periphery of business issues, an increasing concern that was beginning to reshape the rules of competition Three years later, sustainability is truly top-of-mind for CEOs

Ngày tải lên: 18/02/2014, 21:20

... 2Notwithstanding the potential of intrabodies formanipulating intracellular protein function, a bottle-neck of this approach became evident recently, in that the large majority of antibodies obtained ... expressed intracellularly This may be due to the redu-cing conditions existing in cell compartments, which may prevent the formation of intradomain disulfide bonds within the VH and VL domains resulting ... key enzyme in the biosynthesis of polyamines, whose interaction with antizyme, an ODC inhibitory protein, confers to the enzyme a half-life of about 1 h The C-terminal end of ODC contains a PEST

Ngày tải lên: 19/02/2014, 18:20

... is offered in The Faculty of Social Sciences of Mzumbe University which was established in August 2002 as one of the founding faculties at the University • Programs offered in the Faculty of ... total of 40credit points for the two semesters during which students are involved in intensive course work The course is offered in a Specified basic, intermediate and specialist courses Independent ... preservation and dissemination of knowledge and skills through training, research, technical and professional services which is intended to make the University a center of excellence in management science

Ngày tải lên: 20/02/2014, 16:20