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Simple Power Analysis (SPA), first introduced by Kocher et al. in [1], is a technique that involves directly interpreting power consumption measurements collected during cryptographic operations. Although the possibility of attacking elliptic curve cryptosystems (ECC) by SPA repeatedly appears in research papers, all accessible references evade the essence of reporting conclusive experiments where...
In this paper, a uniform method is presented for computing the minimum translational distance (MTD) between a pair of ellipsoids. This article deduces a necessary and sufficient condition of the witness point-pair which achieve MTD value and reliable criteria for determining their spatial relation. Experimental results show the algorithm converge after a few iteration whether two objects overlap or...
Taking soybean futures on Dalian Commodity Exchange for example, the paper studies the relationship between transaction behavior of agricultural futures investors and volatility of futures price. Most previous researches use parametric models to study price volatility, but estimation of volatility is efficient only when the form of general parametric models is rational and all assumptions are fulfilled...
There is a great significance to research the term structure of interest rate based on the background of China’s gradual marketization of interest rates. In the paper, the dynamic changing situations of buy-back rates are researched and time series theories, such as GARCH and EGARCH model, are respectively applied to estimate the term structure of buy-back rates. The empirical results show that (1)...
Fast Discrete Curvelet Transform (FDCT) is a multiscale, multidirection and shift-invariant over complete transform. The paper proposes a blind watermarking algorithm in the FDCT domain. A simple but effective human visual model in FDCT domain is described. By modelling watermarking as a communication process. The experimentations show that this domain has higher capacity than the wavelet (include...
In the underdetermined blind source separation and sparse component analysis, we get sensor signals. The mixed matrix and source signals aren’t known, where the number of sensor signals less than that of source signals, but we can know source signals are sparse, so we use the information to recover source signals by estimating the mixed matrix. This paper gives an algorithm for estimating mixed matrix...
Cryptographic hash function plays a central role in application of cryptology and is an essential building block of a digital signature scheme. So far, in almost all of the practical digital signature schemes, hash functions which are dependent on underlying cyclic groups are necessary, and it could be required to construct a dedicated hash function for each digital signature. As a special cryptographical...
In this paper, taking subjective trust as the background in the open network system, the subjective trust is analyzed. It shows the subjective trust has the subjectivity, uncertainty and randomness etc., which shows fuzziness. Based on the fuzzy reasoning theory, the subjective trust evaluation model based on fuzzy reasoning is studied and proposed by the aid of local information and the associated...
Computer technology has long been considered an important factor influencing attitude and action of human being. And system design of enterprise's virtual community is also an important factor influencing consumer's trust in e-vendors. How system design affect consumer's attitude is a multi-disciplinary research topic. Some researchers have separately studied the effect of knowledge sharing behavior...
Website quality is crucial for acquiring user satisfaction and e-commerce website success. Based on TAM and information system success model, we analyze the effect of website quality on user satisfaction. Website quality includes three dimensions: system quality, information quality and service quality. These dimensions affect user satisfaction through perceived ease of use, perceived usefulness and...
The finite element method (FEM) geometry modeling of realistic head volume conductor plays an important role in FEM-based EEG/MEG forward and inverse problems. In this paper, a tetrahedron mesh generation method was developed for finite element modeling of human head. By using this method, a finite element model of human head is obtained from segmented medical images, and tested in application to...
The reliability of service is related to the kind and the number of service resources in grid. The kind and the number of service resources often change, so the service reliability is variable. In this paper, we propose a reliability measurement model for service in grid, which is based on the dynamic characteristic of service resource. In this model, the dynamic state of service is divided into a...
Based on the characteristics of knowledge demand in innovation networks, an optimization model to determine the optimal realization time of knowledge demand is presented. Important factors, such as knowledge absorption capacity, update rate of knowledge in the network, discount rate, the time of knowledge transfer, market share, product life cycle, etc. are taken into account in the model. A large...
Gives a new control method, which is used in the AGC systems of cold rolling mill. TO the shortage of control method which is used now, analyses and synthesize dynamic mathematical model of AGC, presents a new method: method. Simulations of experiment indicate that the control method has good system performance and robust stability performance.
Central Bank has been promoting the market-based process of interest rate in recent years, and will foster Shanghai Interbank Offered Rate (Shibor) into benchmark interest rate. Time series theories, such as GARCH, TARCH and PARCH model, are respectively applied to estimate the term structure of Shibor. The empirical results show: First, as to the fitting results, the PARCH model is better than the...
A STATCOM multi-objective, adaptive control simulation model is established based on MATLAB dynamic simulation tool SIMULINK. Set a machine infinite-bus system with the STATCOM as an example, combine of fuzzy control theory, with S-Function simulate and analysis the STATCOM transient fault in the system in the process of adjustment. The simulation results proves the correctness of the fuzzy controller...
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