A Novel Approach for Redirecting Module in Honeypot Systems

1 Introduction Computer network security has been focus on passivedefense strategies usingtools and conceptslike Firewall ,Intrusion Detection System(IDS)[1 ~3]. This is an un-reasonable situation,because users have to protect com-puter systems perfectly, while hackers can use one ofvulnerabilities to attackthe systems . We are alwaysin apassive position.The bad guys have theinitiative .Theyhave unli mited resources and attack you whenever theywant , however they want . Moreover ,in a trad…     

A TSK Fuzzy Approach to Channel Estimation for OFDM Systems

This paper proposes a TSK fuzzy approach to channel estimation for Orthogonal Frequency Division Multiplexing （OFDM） systems. The information of dispersive fading channel is described by using TSK fuzzy model, which is updated by the pilot symbols. The proposed approach can trace the variation of channel and it is computationally simple. Its performance is tested via simulations. Results show that it is comparable to that of ideal Minimum Mean-Square-Error （MMSE） method, especially at the low Signal to Noise Ratio （SNR）.     

A Novel Effective Bandwidth Based Call Admission Control for Multimedia CDMA Systems

A novel Call Admission Control(CAC)scheme is proposed for multimedia CDMA systems.The effectivebandwidth of real time calls is reserved in the CAC with the consideration of active factors.The admission of non-real timecalls is controlled by the system according to the residual effective bandwidth left from real time calls.Simulation resultshave shown that the novel CAC has greatly enlarged the admission region for real time calls and make the transmission de-lay of non-real time calls under an acceptable level.     

A Novel Algorithm to Extract Weighted Critical Area

导体故障分析是一种列举与缺陷有关的集成电路版图中可能出现桥连的技术,计算带权关键面积是限制其性能的主要因素.文中提出了一种基于数学形态学和真实缺陷矩形模型提取带权关键面积的新算法,该算法不需要将版图上的线网拆分为矩形,也不需要合并矩形对的带权关键面积.实验结果验证了新算法的有效性.     

A Delay Decomposition Approach to Delay-Dependent Robust Passive Control for Takagi–Sugeno Fuzzy Nonlinear Systems

This paper is concerned with the problem of delay-dependent robust passive control for a fuzzy nonlinear system with time-varying delays. A Takagi–Sugeno fuzzy model approach is exploited to design a passive control for nonlinear systems with time-varying delay. By decomposing the delay interval into multiple equidistant subintervals, new Lyapunov–Krasovskii functionals (LKFs) are constructed on these intervals. Employing these new LKFs, a new robust passive control criterion is proposed in terms of linear matrix inequalities, which is dependent on the size of the time delay. We also design a state feedback controller that guarantees a robustly strictly passive closed-loop system for all admissible uncertainties. Finally, two numerical examples are given to illustrate the effectiveness of the developed techniques.     

Multi-Service Coverage Analysis for CDMA Planning

In CDMA network planning,it's important to understand the characteristics of multi-services.A novelmethod for analyzing the coverage of mixed voice and packet data traffics is presented in this paper.Based upon GIS andMonte-Carlo simulation method,this method can provide more precise but less time-consuming analysis result than before.A practical analysis case using real geographic information and network parameters is applied to verify its performanceand find some useful solutions.Simulation results show that this coverage analysis method can provide helpful solution forthe radio networks planning.     

A Delay Partitioning Approach to H �� Filtering for?Continuous Time-Delay Systems

This paper investigates the problem of delay-dependent H _∞ filter design for continuous time-delay systems. Attention is focused on the design of linear filters guaranteeing a prescribed noise attenuation level in an H _∞ sense. The admissible filters can be obtained from the solution of a convex optimization problem in terms of linear matrix inequalities (LMIs), which can be readily solved via standard software. The crucial issue for solving the filter design problem is the utilization of the delay partitioning idea, which proves to be less conservative than most of the existing results, and the conservatism could be notably reduced by thinning the delay partitioning. Numerical examples are provided to show the effectiveness and the advantage of the proposed filter design method.     

A simplified approach to the performance evaluation of FDMA‐CDMA systems

This work shows it is possible to apply for the performance evaluation of FDMA‐CDMA cellular mobile systems a simple analytical approximated method, previously successfully proposed by two of the authors with reference to FDMA‐TDMA systems. The distinctive feature of the methodology we describe is that it allows for an immediate determination of both the indexes traditionally employed to define system performance, i.e., average bit error probability _e and outage probability P _out at a very low computational cost. The hypothesis required to apply the proposed approximation is that the examined spread spectrum system be characterized by a bandwidth occupancy lower than the coherence bandwidth of the transmission channel. This could be the case of a wireless DS‐CDMA system envisioned to provide voice service and exploiting a processing gain of the order of a hundred. We apply our methodology to determine the performance improvements in both _e and P _out introduced increasing the protection of the transmitted information through error correcting codes and interleaving, in different operating conditions as regards the functioning of the power control loops. A comparison is also satisfyingly carried out with some other approximated analytical methods found in literature. We strongly point out that the corresponding results are achieved at a much more modest computational cost than in traditional approaches. This revised version was published online in July 2006 with corrections to the Cover Date.     

MEM-DnP—A Novel Energy Efficient Approach for Memory Integrity Detection and Protection in Embedded Systems

The pervasiveness of modern day embedded systems has led to the storing of huge amounts of sensitive information in them. These embedded devices often have to operate under insecure environments and are hence susceptible to software and physical attacks. Thus, security has been and will remain one of the prime concerns in the embedded systems. Although a lot of hardware and software techniques have been proposed to provide high levels of security, they are hampered by the trade-offs created by the design constraints in embedded systems. This paper presents a novel energy efficient approach for MEMory integrity Detection and Protection (MEM-DnP). The key feature of the proposed MEM-DnP is that it can be adaptively tuned to a memory integrity verification module by using a sensor module. This significantly reduces the energy overheads imposed on an embedded system as compared to the conventional memory integrity verification mechanisms. The simulation results show that the average energy saved in the combined detection and protection mechanism ranges from 85.5 % to 99.998 %. This is substantially higher compared to the results achieved in basecase simulations with traditional memory integrity verification techniques.     

A μ Approach to Robust Stability Analysis of nD Discrete Systems

This paper considers the robust stability analysis problem of multidimensional (nD) discrete systems. It is shown that the problems of stability test and stability margin computation for an nD system described by Roesser model can be recast into analysis problems in a unified way, thus can be solved effectively by using the commercially available software package. Several numerical examples are presented to illustrate the new methods.     

A New Approach to Observer-Based Fault-Tolerant Controller Design for Takagi-Sugeno Fuzzy Systems with State Delay

This paper deals with the problem of active fault-tolerant control (FTC) for time-delay Takagi-Sugeno (T-S) fuzzy systems based on a fuzzy adaptive fault diagnosis observer (AFDO). A novel fuzzy fast adaptive fault estimation (FAFE) algorithm for T-S fuzzy models is proposed to enhance the performance of fault estimation, and sufficient conditions for the existence of the fault estimator are given in terms of linear matrix inequalities (LMIs). Using the obtained on-line fault estimation information, an observer-based fast active fault-tolerant controller is designed to compensate for the effect of faults by stabilizing the closed-loop system. Simulation results of a track trail system and a nonlinear numerical example are presented to illustrate the effectiveness of the proposed method.     

A Novel Space-time Spreading Transmit Diversity Scheme for Wireless CDMA System

1　Introduction　Thefundamentalchallenge,whichmakesreliablewirelesstransmissiondifficult,isthetime varyingmulti pathfading .Theoretically ,themosteffectivetechniqueformitigatingmulti pathfadinginawire lesschannelistransmitterpowercontrol.ButinCDMAsystems,powercontrolislimitedbythetransmitterdynamicrangeandthenear fareffect.Diversityisanefficientandpracticaltechniquetocombattime varyingmulti pathfading .Andanten nadiversityiswidelyappliedtoreducetheeffectofmulti pathfading .Theclassicalappro…     

Strategies for Dense Optical CDMA Communication Systems

1　Introduction　Recently, considerable interest has been focused on Opti cal Code Division Multiple Access (OCDMA)[1~15], be cause of the advantages of flexible bandwidth management,asynchronous access, and the potential network scalabilityetc. In an OCDMA system, many users can simultaneouslyshare the same channel through the allocation of specific ad dress codes. All users signals are transmitted by the sameoptical fiber channel. At the receiver end, the matched de coder can re…     

A Delay-Dependent Approach to Robust H ∞ Control for Uncertain Stochastic Systems with State and Input Delays

In this paper, the problem of delay-dependent robust H _∞ control for uncertain stochastic systems with state and input delays is investigated. The time delays are assumed to be bounded and time varying and the uncertainties are assumed to be norm bounded. By using the Lyapunov functional method, a new delay-dependent robust H _∞ control scheme is presented in terms of linear matrix inequalities (LMIs). Some numerical examples are given to illustrate the effectiveness of the proposed approach. This work is partially supported by the Natural Science Foundation of China (60674055, 60774047), and the Taishan Scholar Programme of Shandong Province. An erratum to this article can be found at     

A Generalized Parameter-Dependent Approach to Robust H ∞ Filtering of Stochastic Systems

This paper is concerned with the problem of robust H _∞ filtering for discrete-time stochastic systems with state-dependent stochastic noises and deterministic polytopic parameter uncertainties. We utilize the polynomial parameter-dependent approach to solve the robust H _∞ filtering problem, and the proposed approach includes results in the quadratic framework that entail fixed matrices for the entire uncertain domain and results in the linearly parameter-dependent framework that use linear convex combinations of matrices as special cases. New linear matrix inequality (LMI) conditions obtained for the existence of admissible filters are developed based on homogeneous polynomial parameter-dependent matrices of arbitrary degree. As the degree grows, a test of increasing precision is obtained, providing less conservative filter designs. A numerical example is provided to illustrate the effectiveness and advantages of the filter design methods proposed in this paper. This work was supported by HKU CRCG 200611159157, the National Nature Science Foundation of China (60504008), The Research Fund for the Doctoral Programme of Higher Education of China (20070213084), the Fok Ying Tung Education Foundation (111064), and the Key Laboratory of Integrated Automation for the Process Industry (Northeastern University), Ministry of Education of China.     

A Generalized KYP Lemma-Based Approach for H ∞ Control of Singularly Perturbed Systems

In this paper, H _∞ control synthesis of linear time invariant singularly perturbed systems (SPS) based on a generalized KYP lemma approach is investigated. By employing a generalized KYP lemma on the low- and high-frequency domains of SPS, respectively, a slow (low-frequency) controller and a fast (high-frequency) controller are designed to stabilize the slow and fast subsystems, and also to meet the individual H _∞ performance specifications. A composite controller for the full-order SPS is constructed via the above two above well-defined lower-order problems. Moreover, the effectiveness of the proposed method is verified as compared with the traditional H _∞ design method by its application to a tracking problem of SPS and an H _∞ model matching problem for SPS.     

A Novel Parameter Identification Approach for C–V–T Characteristics of Multi-Quantum Wells Schottky Diode Using Ant Lion Optimizer

Russian Microelectronics - We report the capacitance-voltage (C–V) characteristics of multi quantum wells Schottky diode. This diode is based on Aluminum gallium arsenide, which is highly...     

A Low-Complexity MAP–SIC Detector for Massive MIMO Systems

This paper represents the modified version of spotted hyena optimizer (SHO) to improve the performance. The spiral moment and astrophysics concepts are utilized in the proposed algorithm. The spiral moment is used to enhance the intensification capability of SHO. The concept of astrophysics is incorporated in SHO to improve both diversification and intensification. The performance of the proposed algorithm is compared with five well-known metaheuristic algorithms over CEC 2015 benchmark test functions. The results depict that the proposed algorithm outperforms the others in terms of fitness function value. The effects of scalability and sensitivity analysis have also been investigated. The proposed algorithm is also applied to two constrained engineering design problems. The experimental result shows that the proposed algorithm performs better than the other algorithms.

     

A Novel Nanobody–Photosensitizer Conjugate for Hypoxia Resistant Photoimmunotherapy

As a non-invasive treatment modality, photodynamic therapy has been a potential therapeutic method for metastatic and non-metastatic tumors. In order to further improve the tumor selectivity, phtotoimmunotherapy (PIT) has been developed recently, which includes antibodies as the active targeting ligands. However, traditional monoclonal antibody-based PIT suffers from long half-lives and extended phototoxic side-effects in vivo. Herein, a type I mechanism-based photoimmunoconjugate (PIC) is developed by incorporating anti-EGFR nanobody as the targeting ligand, and benzophenothiazine as the photosensitizer (PS). The small size and robust structure of the nanobody ensures excellent targeting accuracy and efficient renal excretion. Meanwhile, the type I PS is able to circularly transfer oxygen to superoxide radical upon irradiation to overcome hypoxia microenvironment. The PIC showed satisfying phototherapeutic ability both in normoxia and hypoxia, and displayed high selectivity towards tumor in vivo. By combining nanobody and Type I PS, the work presents a novel type of PIC for the precise treatment of tumors with high specificity and potency.     

A Novel Approach to Practical Matrix Converter Motor Drive System With Reverse Blocking IGBT

Fig. 8 shows the variations of the input power factor and T.H.D with the load torque at 40 Hz. The input power factor is more than 99% with 50% load torque or higher. The THD of the input current is also less than 10% with 50% load torque or higher. In the load region, the input power factor decreases because of an increase in the ratio of the filter current against the input current, and the T.H.D. of the input current increases, since the magnitude of the harmonics current is almost constant, regardless of the load condition. Those experimental results have confirmed that the proposed control method is useful in the wide load region.