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- Geometric-invariant image watermarking by key-dependent triangulation
- Fast and massive dissemination of image data across the Internet imposes great challenges of protecting images against illegal access and unauthorized reproduction. Image watermarking provides a powerful solution for intellectual protection. In this paper, a new image watermarking approach robust to various geometric distortions is proposed. The new scheme involves...
- Research articles 2008-06-01
- Matrix elements for the morse and coulomb interactions
- Abstract We show the usefulness of the hypervirial theorem to obtain the matrix elements (m|[e.sup.-[gamma]au]|n> for the Morse potential. Besides, it is known that the hydrogenlike atom can be studied as a Morse oscillator, then here we prove that these fact leads to an interesting method to calculate <n[l.sub.2|[r.sup.k]|n[l.sub.1]> for...
- Research articles 2007-06-01
- Economic power dispatch of power system with pollution control using multiobjective ant colony optimization
- Abstract: This paper presents solution of optimal power flow OPF problem of medium-sized power systems via an ant colony optimisation ACO metaheuristic method. The objective is to minimise the total fuel cost of generation and environmental pollution caused by fossil based thermal generating units and also maintain an acceptable system...
- Research articles 2007-04-01
- Performance of fractionally spaced blind channel shortening
- Abstract In this paper we derive the Multicarrier Equalization by Restoration of RedundancyY MERRY algorithm for a fractionally-spaced channel shortening or time domain equalizer (FSTEQ and show that the FSTEQ MERRY algorithm converges significantly faster than the non-fractional TEQ MERRY algorithm. The main reason is that a fractionally-spaced blind...
- Research articles 2007-01-01
- Coexistence rules and regulations in the European Union
- The institutional environment for planting GM crops in Europe is heterogeneous. Poland wants to ban the planting of GM crops; Spanish farmers have been growing Bt-maize for several years: 120 communities in Belgium have declared themselves to be GMO-free; a local grain trader in Germany has announced that it will...
- Research articles 2006-12-01
- Lam Tuyen Tinh, translated and annotated by Honda Mamoru. LangBiang no jiseki: Betonamu Chubu shosuminzoku no kodensho [TEXT NOT REPRODUCIBLE IN ASCII].(Legends from the LangBiang Highlands: Folklores of minority groups in Central Vietnam)(Book review)
- LAM TUYEN TINH, translated and annotated by Honda Mamoru. LangBiang no jiseki: Betonamu Chubu shosfiminzoku no kodensho [TEXT NOT REPRODUCIBLE IN ASCII] [Legends from the LangBiang Highlands: Folklores of minority groups in Central Vietnam]. Kawasaki, Japan: Terra Incognita, 2000. 294 pages. Translator's bibliography, color plates....
- Research articles 2006-10-01
- Yang Shuhui and Yang Yunqin, translators. Feng Menglong, compiler. Stories to Caution the World: A Ming Dynasty Collection, Volume 2.(Book review)
- Yang Shuhui and Yang Yunqin, translators. Feng Menglong, compiler. Stories to Caution the World: A Ming Dynasty Collection, Volume 2. Seattle and London: University of Washington Press, 2005. xx, 771 pp. Hardcover $90.00, ISBN 0-295-98552-6. Having already published a full translation of Feng Menglong's...
- Research articles 2006-09-22
- Subjective economic risk to beneficiaries in notional defined contribution accounts
- ABSTRACT This article aims to quantify the aggregate subjective economic risk to which beneficiaries would be exposed if a retirement pension system based on notional account philosophy were introduced. We use scenario generation techniques to make projections of the factors that determine the real expected internal rate of return...
- Research articles 2006-09-01
- The simple analytics of a pooled annuity fund
- ABSTRACT This article provides a formal analysis of payout adjustments from a longevity risk-pooling fund, an arrangement we refer to as group self-annuitization GSA. The distinguishing risk diffusion characteristic of GSAs in the family of longevity insurance instruments is that the annuitants bear their systematic risk, but the pool...
- Research articles 2005-09-01
- Soil fragment size distribution and compactive effort effects on maize root seedling elongation in moist soil.
- Distributions of soil fragments a mixture of primary aggregates resulting from tillage fragmentation in seedbeds are known to influence emergence and early shoot and root growth of crops. However, it is not clearly understood which distribution model parameters the roots are responding to when water imbibition and nutrient availability are...
- Research articles 2005-07-01
- Testing quasi-independence of failure and truncation times via conditional Kendall's tau.(failure time)(left-truncation time)(right-truncation time)
- Truncated survival data arise when the failure time is observed only if it falls within a subject-specific truncating set. Most analysis methods rely on the key assumption of quasi-independence, that is, factorization of the joint density of failure and truncation times into a product proportional to the individual densities in...
- Research articles 2005-06-01
- El concepto de lo innato en la psicologia evolucionista *.
- Resumen: Se revisa aquí la literatura correspondiente a algunas disciplinas cognoscitivas evolucionistas, y se muestra que existe por lo menos una connotación importante asociada al término "innato" como se usa en estas disciplinas; a saber, la que entiende lo innato como aquello que es producto de...
- Research articles 2005-05-01
- Sequential Monte Carlo methods for statistical analysis of tables.
- We describe a sequential importance sampling SIS procedure for analyzing two-way zero-one or contingency tables with fixed marginal sums. An essential feature of the new method is that it samples the columns of the table progressively according to certain special distributions. Our method produces Monte Carlo samples that are remarkably...
- Research articles 2005-03-01
- A pricing model for quantity contracts
- ABSTRACT An economic model is proposed for a combined price futures and yield futures market. The innovation of the article is a technique of transforming from quantity and price to a model of two genuine pricing processes. This is required in order to apply modern financial theory. It is...
- Research articles 2004-12-01
- Frequency-domain models for nonlinear microwave devices based on large-signal measurements
- In this paper, we introduce nonlinear large-signal scattering S parameters, a new type of frequency-domain mapping that relates incident and reflected signals. We present a general form of nonlinear large-signal S-parameters and show that they reduce to classic S-parameters in the absence of nonlinearities. Nonlinear large-signal impedance Z and admittance...
- Research articles 2004-07-01
- Risk and the value of Bt corn
- Bt corn is genetically engineered to produce a protein found in the soil bacterium Bacillus thuringiensis Bt. The protein is toxic to lepidopterous insects such as the European corn borer ECB, Ostrinia nubilalis Hubner, which is estimated to cost U.S. farmers over $1 billion annually (Mason et al.). Most varieties...
- Research articles 2004-05-01
- Aegean feasting: a Minoan perspective
- ABSTRACT This survey of feasting in Bronze Age Crete reveals that feasts could be either exclusive elite celebrations or unrestricted occasions in which social identity rather than power was most important. In contrast, Mycenaean feasting on the Greek mainland seems to have arisen from elite customs aimed at exclusion....
- Research articles 2004-03-22
- Honda Katsuichi. Harukor: an Ainu Woman's Tale. Voices from Asia.(Book Review)
- HONDA KATSUICHI. Harukor: An Ainu Woman's Tale. Voices from Asia. Translated by Kyoko Selden. Foreword by David L. Howell. Berkeley: University of California Press, 2000. xxxv + 315 pages. Maps, line drawings, photographs, diagrams, glossary, list of English reference books, index. Cloth US$50.00; ISBN 0-520-21019-0. Paper...
- Research articles 2003-12-01
- Inferring infection transmission parameters that influence water treatment decisions.
- 1. Introduction Risk assessments can quantify the effect of water treatment interventions that improve human health by removing waterborne microbes. Secondary transmission of infection may strongly influence risk exposure and the public health benefit of water treatment, but secondary transmission dynamics are not always fully modeled, and the...
- Research articles 2003-07-01
- Application of symmetric orthogonal multiwavelets and prefilter technique for image compression
- ABSTRACT Multiwavelets are new addition to the body of wavelet theory. There are many types of symmetric multiwavelets such as Geronimo-Hardin-Massopust GHM and Chui-Lian CL multiwavelets. However, the matrix filter generating the GHM system multiwavelets does not satisfy the symmetric property. For this reason, this paper presents a new...
- Research articles 2003-04-01
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