... high-income areas. Consider the following. The Durban Chamber of Commerce and Industry “has in recent years expressed the concern of its members regarding the increasing cost of doingbusiness in ... better-offindividuals have been the main beneficiaries of increasing ideological free-marketfunding systems Most development finance in the past has given priority to private profit – of developers, ... afford). In the context of South Africa,granting service quality along income lines was a guarantee that apartheid-era living standardswould remain intact.Apart from the question of basic service...
... commissioner of prisons, ZPS] and judge fellow inmates and mete outpunishments, including beatings, through night-timecourts in their cells.According to both inmates and prison officials,drinking ... in- depth inter-view to provide a way of systematically presenting keyindicators, as well as of allowing more thorough docu-mentation of conditions and nuanced understanding of the interrelation of ... regarding prisonconditions, discipline and HIV/TB risk behaviour in open-ended, in- depth interviews. All interviews wereconducted outside of the hearing of prison officers andother prisoners, in...
... contents-providing services, presence services, and E-911locating services, have recently been drawing much attention inwireless network community. Since LBSs rely onthe location information in providing ... a wireless link errorscenario comes into play in order to see whether thefairness is supported in t ime-varying unreliable wireless link, whi ch is to ver ify the role of ωsi in calculatingper-location ... dynamics of TaLE-enabled Hot Spot in the presence ofwireless link errors.Table 8 Average per-location throughput of TaLE-enabled Hot Spot in the presence ofwireless link errors.Time interval...
... M)Flooding(b) Stochastic pulsing attacks and flooding attacks Figure 7: Average detection time for pulsing and flooding attacks using Vanguard. 12 EURASIP Journal on Advances in Signal ProcessingTable ... 40M)Flooding(b) Stochastic pulsing attacks and flooding attacks Figure 8: Average detection time for pulsing and flooding attacks using the WCM method.value p = 0.01. The period and the burst width of ... pagesdoi:10.1155/2009/256821Research ArticleDetecting Pulsing Denial- of- ServiceAttacks withNondeterministic Attack IntervalsXiapuLuo,EdmondW.W.Chan,andRockyK.C.ChangDepartment of Computing, The Hong Kong Polytechnic...
... paper.2. Intrusion Detection inWireless Networks This section examines the state of intrusion detection in wireless networks, with a particular emphasis on statisticalapproaches. The wireless intrusion ... clus-tering approach for intrusion detection in mobile ad hoc networks, ” in Proceedings of the 13th International Conferenceon Software, Telecommunications and Computer Networks (SoftCOM ’05), ... expectedto appear in the near future. The intrinsic features of wireless mobile networks make them more vulnerable than wiredfixed networks. For instance, the nature ofwireless radiolinks renders...
... Barcelona, Spain3Division of Communication Systems, Department of Electrical Engineering, Linkăoping University, 581 83 Linkăoping, Sweden4Department of Electrical and Computer Engineering, University ... reproduction in any medium, provided the original work is properlycited.Next-generation wirelessnetworks will go beyond the point-to-point or point-to-multipoint paradigms of classical cel-lular networks. ... transceivers, relays providediversity by creating multiple replicas of the signal of interest.By properly coordinating different spatially distributed nodes in a wireless system, one can effectively synthesize...
... for incrementally increasing values of the self-interference coefficient. It alternates betweentwosteps:increasingthevalueofavirtualself-interferencecoefficient gv(note that this increasing is ... isintuitively explained by looking in to the network topology.When the self-interference is significantly canceled, theresultant interference at the receiver node of any link in thecase of ... thecase ofwireless CDMA networks the interference coefficientgij(t) would model the residual interference at the output of despreading filter of node rec(j)[7]. Similarly, in thecase wireless...
... công thường là các máy có kết nối Internet bị người tấn công xâm nhập. DDOS - Distributed DenialOf Service. ã 1998 Chng trỡnh Trinoo Distributed DenialofService (DDoS) được viết bởi Phifli. ... thấy rõ những vụ tấn công từ chối dịch vụ (Denial Of Services Attack ) và những cuộc tấn công về việc gửi nhửng gói dữ liệu tới máy chủ (Flood Data Of ServicesAttack) tới tấp là những mối lo ... reboot. ã Tn cụng t chi dch vụ có rất nhiều dạng như Ping of Death, Teardrop, Aland Attack, Winnuke, Smurf Attack, UDP/ICMP Flooding, TCP/SYN Flooding, Attack DNS. • Qua đó chúng tôi đã tham khảo...
... DenialofService I/. Giới thiệu khái quát về DoS:DoS (Denial of Service) có thể mô tả như hành động ngăn cản những người dùng ... trạng thái chờ (đợi gói tin ACK từphía yêu cầu thiết lập kết nối) và liên tục gửi gói tin SYN ACK để thiết lập kết nối . Một cách khác là giả mạo địa chỉ IP nguồn của gói tin yêu cầu thiết lập ... người dùng cũng như các nguồn tin trên mạng (các thông tin cập nhật định tuyến giữa các router cũng nên thiết lập ở chế độ xác thực)- Xây dựng hệ thống lọc thông tin trên router, firewall… và...
... Tìm hiểu về DoS- Denialof Service/ Tấn công từ chối dịch vụTrong tấn công từ chối dịch vụ, kẻ tấn công cố gắng ngăn cản người dùng truy cập thông tin hoặc dịch vụ. Bằng cách nhằm ... mail và ngăn chặn bạn nhận được các mail khác. Thực chất của tấn công bằng từ chối dịch vụ (Denial Of Services Attack) là hacker sẽ chiếm dụng một lựợng lớn tài nguyên trên server, tài nguyên ... reboot.Mới nhất là tấn công từ chối dịch vụ theo phương pháp phản xạ DRDoS (DistributedReflection Denialof Service) .Để thực hiện "Tấn công từ chối dịch vụ phân tán DDoS", kẻ tấn công tìm...
... legitimate users, by overloading its resourcesA Distributed Denial of Service (DDoS) ã On the Internet, a distributed denial- of- service A Distributed Denial - of - Service (DDoS) attack:,(DDoS) ... familiarize you with :ã Denialof Service( D0S) Attackã Types of DoS Attacks ã Tools that facilitate DoS AttackãBOTsã Distributed DenialofService (DDoS) Attackã Taxonomy of DDoS AttackT l th ... stopPackets arriving at your firewall may be blocked there, but they may just as easily overwhelm the incoming side of your Internet connectionoverwhelm the incoming side of your Internet connectionIf...
... consideration, we study the throughputmaximization of a distributed single-hop wireless networkwith K links, operating in a bandwidth of W. Wireless networks using unlicensed spectrum (e.g., Wi-Fi systemsbased ... RH(·)representstherighthandsideofthe equations.2. Network Model and Objectives2.1. Network Model. In this work, we consider a single-hop wireless network consisting of K pairs of nodes indexed by{1, , K}, operating in ... derivative of (31)intermsofpiis positive too.Thus, (31)isaconvex function of pi.Itisknownthataconvexfunction attains its maximum at one of its extreme points of its domain [28]. In other...
... basicallyconsists of two phases: training phase and testing phase. Atraining set is used in supervised training to present theproper network behavior, where each input to the networkis introduced ... parameters of digital modulation used in training, validation,and evaluation of the proposed algorithm.Besides fast convergence, one of the main advantages of RPROP lies in the fact that no choice of ... networkconvergence. The training algorithm is mostly defined by thelearning rule, that is, the weig hts update in each trainingepoch. There are a number of efficient training algorithmsfor ANNs....
... the caching management of streaming data in multihop wireless networks. In this paper, we present the theoretical foundations of C3and a set of general rules for applying C3 in the cachingmanagement. ... benefits in multihop wireless networks [8–10]. In the caching-enhanced multihop wireless networks, single wireless node usually has limited space for cachingand can only save part of streaming data. ... Coding andCaching (C3); compre for example Network Coding (NC)andno coding at all (Non-NC ).3.1. Overview of Cooperative Coding and Caching3.1.1. Code words. In C3, instead of having...
... Schwartz,“The value of clustering in distributed estimation for sensor networks, ” in Proceedings of the International Conference on Wireless Networks, Communications and Mobile Computing,vol. 2, pp. ... Rabbat and R. Nowak, “Distributed optimization in sensor networks, ” in Proceedings of the 3rd International Symposiumon Information Processing in Sensor Networks (IPSN ’04),pp.20–27, ACM, New York, ... prediction of dynamic fields.Online optimization of this criterion by adding or removingkernel functions from the dictionary also seems interesting.Finally, in a broader perspective, controlling the...