When Hamiltonians are nonsmooth, we define viscosity solutions of the Aronsson equation and prove that value functions of the corresponding deterministic optimal control problems are solutions if they are bilateral viscosity solutions of the Hamilton-Jacobi-Bellman equation. We characterize such a property in several ways, in ...

The Cartesian to geodetic coordinate transformation problem is modeled as a minimization problem for the height of an object above the reference ellipsoid. Cartesian coordinate of footprint of the object is directly derived and a new closed form solution to transform geocentric rectangular coordinates to geodetic Coordinates is found. This formula is ...

Microwave image reconstruction is typically based on a regularized least-square minimization of either the complex-valued field difference between recorded and modeled data or the logarithmic transformation of these field differences. Prior work has shown anecdotally that the latter outperforms the former in limited surveys of simulated and experimental phantom results. In ...

Solve an inequality involving absolute values using a graph of the absolute-value function. Vary the terms of the absolute-value function and vary the value that you are comparing it to. Then explore how the graph and solution set change in response.

Stereo-matching solutions minimize disparity relative to the horopter (minimum-absolute-disparity or MAD), and differences in disparity between adjacent features (minimum-relative-disparity or MRD). When placed in conflict, spatial proximity promotes MRD over MAD solutions. How does temporal proximity of ...

This study mathematically presents an optimum material removal control model, where the Material Removal Rate (MRR) is comprehensively introduced, to accomplish the dynamic machining control and tool life determination of a cutting tool under an expected machining quantity. To resolve the incessant cutting-rate control problem, Calculus of Variations is implemented for the optimum ...

We obtain spherically symmetric solutions for scalar fields with a non-minimal coupling xi absolute value of phi/sup 2/ R to gravity. We find, for fields of mass m, maximum masses and number of particles of order M/sub max/ approx. 0.73xi/sup 1/2/ M/sub Planck//sup 2//m, and N/sub max/ approx. 0.88xi/sup 1/2/ M/sub Planck//sup 2//m/sup ...

Some questions of the approximate solution of the nonlinear boundary problem for analytic functions, associated with the Low equation are considered. The convergency of continuous analog of the Newton method to the solutions with small absolute value is p...

interpretation of terms such as "absolute liability" and "minimize risk" that exist in documents like the. Charter of the United Nations, ...

Abstract: This paper proposes a new approach to the well known Liu-Layland periodic scheduling problem. This approach proves that any justin-time sequence with maximum absolute deviation being less than one is in fact a periodic schedule. Consequently, periodic schedules can be obtained by any algorithm capable of generating just-in-time sequences with maximum ...

Calculations regarding the long-term hazards to health from the radioactive gas radon which emanates from the tailings of milled uranium ores are presented here. The absolute and relative risks to the population from mill tailings, as well as technical solutions to the problem of disposal methods which would eliminate or minimize lung ...

We admit that the mathematical relation between agricultural production f(x, y) and the two types of fertilizers x and y is given by function (1). The coefficients that appear are determined by using the least squares method by comparison with the experimental data. We took into consideration the following economic indicators: absolute benefit, relative benefit, profitableness ...

The National Institute of Standards and Technology (NIST) has certified a high-purity (229)Th Standard Reference Material as SRM 4328C, based on live-timed 4pialphabeta-gamma anticoincidence counting (LTAC) of the equilibrium solution. The LTAC system was optimized to minimize the uncertainty in the result due to the two short-lived ground-states present ...

Topics covered include singular minimal hypersurfaces, generalized solutions, minimal hypersurfaces, first applications of generalized solutions, Bernstein's theorem, and existence of non-linear solutions to the M.S.E. in the whole space. 16 references. (GHT)

A relativistic, 3-particle equation with minimal 2-body input has unique solutions for bound states, and exhibits the Efimov effect (that there is an infinite accumulation of 3-particle bound states as the scattering length between the pairs increases without bound). The theory is Lorentz invariant and unitary. The physical input (for the three equal mass ...

An important question in the literature focusing on motor control is to determine which laws drive biological limb movements. This question has prompted numerous investigations analyzing arm movements in both humans and monkeys. Many theories assume that among all possible movements the one actually performed satisfies an optimality criterion. In the framework of optimal control theory, a first ...

An important question in the literature focusing on motor control is to determine which laws drive biological limb movements. This question has prompted numerous investigations analyzing arm movements in both humans and monkeys. Many theories assume that among all possible movements the one actually performed satisfies an ...

The purpose of the work reported herein is to examine absolute modes of the TPD instability in two dimensions in an infinite homogeneous plasma. Briggs has shown that the condition for absolute instability in this case is the existence of a solution of th...

Measurements of absolute positions of electron energy loss spectroscopy (EELS) core-loss edges in a transmission electron microscopy (TEM) are hampered by noticeable errors caused by instabilities of the primary energy of the incident electrons. These instabilities originate from a continuous drift and random ripple of the high tension and are unavoidable in the present ...

Phase unwrapping is the inference of absolute phase from modulo-2pi phase. This paper introduces a new energy minimization framework for phase unwrapping. The considered objective functions are first-order Markov random fields. We provide an exact energy minimization algorithm, whenever the corresponding clique potentials are convex, ...

Over the past few years, the pace of preclinical stem cell research is astonishing and adult stem cells have become the subject of intense research. Due to the presence of promising supporting preclinical data, human clinical trials for stem cell regenerative treatment of various diseases have been initiated. As there has been a precedent for the use of bone marrow stem cells in the treatment of ...

A solution is given to the classical problem of the minimal surface in three dimensions formed from a repeating cell microstructure under isotropic conditions. The solution is found through a global/local minimization procedure and the resulting basic cel...

We investigate the behavior of a continuum model designed to provide insight into the dynamical development of microstructures observed during displacive phase transformations in certain materials. The model is presented within the framework of nonlinear viscoelasticity and is also of interest as an example of a strongly dissipative infinite-dimensional dynamical system whose forward orbits need ...

The effectiveness of using minimization techniques for the solution of nonlinear structural analysis

Multidimensional unfolding methods suffer from the degeneracy problem in almost all circumstances. Most degeneracies are easily recognized: the solutions are perfect but trivial, characterized by approximately equal distances between points from different sets. A definition of an absolutely degenerate solution is proposed, which makes ...

Logarithm of vapor pressure vs . reciprocal of absolute temperature. ... The density, vapor pressure, and viscosity are reported for two con- ...

Wang, Member, IEEE Abstract--We propose a new fault block model, Minimal-Connected-Component (MCC to determine the existence of Manhattan routes. Since MCC is designed to facilitate minimal route finding, if there exists no minimal route under MCC fault model, then there will be absolutely no ...

The experimental technique of tracer pulse chromatography was used to simultaneously measure the uptake of eluent components by a C(18)-bonded reversed-phase liquid chromatography (RPLC) packing and the retention factors for a series of test analytes over the full range of eluent composition for methanol and acetonitrile with water. The primary objective of the research was to determine whether or ...

It is shown that the iterated minimal information solution of the radiative transfer equation for temperature profiles can be implemented to any prespecified number of iterations as a one-step solution by using a properly modified solution matrix. The mat...

We are interested in the numerical solution of minimization problems subject to bound constraints. Algorithms for solving these problems usually restrict the change in the dimension of the working subspace by only dropping or adding one constraint at each iteration. This implies that if there are k/sub 1/ constraints active at the ...

Robotic Surgery. AESOP�, a voice-controlled robotic endoscopic positioning system, provides an absolutely steady picture during minimally invasive surgeries ...

... We outline a method for systematically finding approximate solutions to these equations ... norm. The solution thus found minimizes the ...

... Model and Solution Approaches for Part Movement Minimization and Load Balancing in FMS with Machine, Tool, and Process Plan Flexibilities. ...

... Title : Integrated Solutions for Metal Recovery and Water Recycling. ... designs for metal recovery, water recycling and waste minimization are ...

Dimethyl sulfoxide (DMSO) can effectively form a glassy matrix necessary for dynamic nuclear polarization (DNP) experiments. We tested the effects of (13)C enrichment in DMSO on DNP of [1-(13)C]pyruvate doped with trityl radical OX063Me. We found that the polarization build-up time ? of pyruvate in (13)C-labeled DMSO glassing solution is twice as fast as the unenriched DMSO ...

We study the consequences of some possible modifications of the phase space structure of general relativity imposed by breaking, in the simplest manner, the full diffeomorphism invariance but retaining the time foliation preserving diffeomorphisms. We examine the different sectors in phase space that satisfy the new structure of constraints. For some sectors we find an infinite tower of ...

Dimethyl sulfoxide (DMSO) can effectively form a glassy matrix necessary for dynamic nuclear polarization (DNP) experiments. We tested the effects of 13C enrichment in DMSO on DNP of [1-13C]pyruvate doped with trityl radical OX063Me. We found that the polarization build-up time ? of pyruvate in 13C-labeled DMSO glassing solution is twice as fast as the unenriched DMSO while ...

A Synthetic Aperture Radar (SAR) requires accu- rate measurement of the motion of the imaging plat- form to produce well-focused images with minimal absolute position error. The motion measurement (MoMeas) system consists of a inertial measurement unit (IMU) and a P-code GPS receiver that outputs corrected ephemeris, L1 & L2 pseudoranges, and L1 & ...

... surfactant solutions (liquid membranes), supported hydrogel membranes, grafted and interpenetrating polymer networks, and nanocomposites. ...

Flood forecasting is important for flood damage reduction. As a result of advances in the numerical methods and computer technologies, many mathematical models have been developed and used for hydraulic simulation of the flood. These simulations usually include the prediction of the flood width and depth along a watercourse. Results obtained from the application of hydraulic models will help ...

An iterative algorithm is described to solve the inverse problem of stratified media using magnetic field data collected in aerial surveys. An airborne antenna sends downwards magnetic fields at several frequencies, and an airborne antenna detects the secondary magnetic fields. The input data for the inversion algorithm are the complex ratios between the secondary and primary magnetic fields at ...

This report discusses the following topics on support minimized inversion of acoustic and elastic wave scattering: Minimum support inversion; forward modelling of elastodynamic wave scattering; minimum support linearized acoustic inversion; support minimized nonlinear acoustic inversion without absolute phase; and support ...

We developed a high-resolution absolute optical encode that achieves a resolution of 4,194,304 Division/Rev at a diameter of 34mm, based on the new angle detection principles, by which the two sets of interpolation data of two differing cycles and M-Code data are mixed. This absolute encoder also achieves an accuracy of 20 seconds to ...

... Adaptive DSP Solution to Sensor Data Processing. ... current generation of high-speed DSP solutions. ... data streams must be processed with minimal ...

The purpose of this note is to give an improved version of a basic a priori estimate for the gradient of solutions of the minimal surface equation. Specifically, we prove the following result. Theorem. Let u = u(x,y) be a non-negative solution of the mini...

The purpose of the work reported herein is to examine absolute modes of the TPD instability in two dimensions in an infinite homogeneous plasma. Briggs has shown that the condition for absolute instability in this case is the existence of a solution of the coupled mode dispersion relation. Analytic solutions for ...

The classic Madelung problem, i.e., the divergence associated with the r(sup -1) term in the Coulomb potential of condensed ionic systems, was cast into an absolutely convergent form that is readily evaluated by direct lattice summation, revealing a net r...

The classic Madelung problem is cast into an absolutely convergent form that is readily evaluated by direct lattice summation, revealing a net r(sup (minus)5) range of the net Coulomb potential in ionic crystals and liquids. The realization that Coulomb i...

Some fast algorithms have recently been constructed for fitting regression equations by the Least Absolute Deviations criterion. The basis for these algorithms is discussed, and the geometry of the problem is described. The difficulties caused by degeneracy of the problem and nonuniqueness of the solutions are also mentioned.

This paper presents a linear programming approach to solve simple linear regression problems with the least absolute value criterion. The solution technique uses linear programming with an extended minimum ratio rule. A computational study indicates the e...

A comparison is made between linear programming and weighted least squares approach to absolute deviation curve fitting. The computational results are consistent in showing linear programming substantially reduces solution times while requiring only a rel...

A lower critical solution temperature (LCST) phase split can be used as an alternative to steam stripping for separating polymer solutions. By adding a supercritical fluid (SCF) additive to the polymer solution the LCST can be lowered, thus, minimizing th...

water. The absolute viscosity was determined from the measured kinematic viscosity using the densityAppendix A: Correlations for the density and viscosity of aqueous formaldehyde solutions. 103 Appendix A Correlations for the density and viscosity of aqueous formaldehyde solutions Abstract Empirical

Our primary goals are the minimization of the trim loss or the minimization of the ... For our computational tests we use some data sets from the paper industry ...

Solution of the steady-state scalar conservation law u[sub x] + TU[sub y] = 0 (t constant, 0 [le] t [le] 1) on the unit square is considered. A grid of n[sup 2] equal square cells with sides of length h = 1/n is placed on the unit square. Numerical values u[sub i,j] are located at the cell vertices (x[sub i], y[sub i]) = (ih, jh). The conservation law is discretized on each ...

The Mumford-Shah model has been well acknowledged as an important method for image segmentation. This paper discussed the problem of simultaneous image segmentation and smoothing by approaching the Mumford-Shah paradigm from a numerical approximation perspective. In particular, a novel iterative relaxation algorithm for the numerical solving of the Mumford-Shah model was proposed. First, the paper ...

To compute depth from binocular disparity, the visual system must correctly link corresponding points between two images, given multiple possible correspondences. Typically, model solutions to this problem use some form of local spatial smoothing, with many physiologically inspired models doing so implicitly, through the use of local cross-correlation-like procedures. In this ...

An automated, flow calorimeter has been constructed to measure the isobaric heat capacities of concentrated, aqueous electrolyte solutions using a differential calorimetry technique. The calorimeter is capable of operation to 700 K and 40 MPa with a measurement accuracy of 0.03% relative to the heat capacity of the pure reference fluid (water). A novel design encloses the ...

First, the existence of the solution of the Cauchy problem, whose absolute value difers from the absolute value of the kink-solution by a function from W(sub 2)(sup 1)(R) is proved if this is valid for the initial value. Then, the stability of the kink-so...

Essential genes are absolutely required for cell survival. Determination of the universal minimal set of genes needed to sustain life is, therefore, expected to contribute greatly to our understanding of life at its simplest level, with applications in medicine and synthetic biology. The search for the minimal genome has led to the ...

The maximum intersection (MAXI) method, which derives from the master station method (MSM), determines within a 3-D velocity model the absolute hypocentral location based on observed arrival times. First, the spatial node that better satisfies the arrival time differences computed at all station pairs, plus or minus an error tolerance value (in seconds), is defined as the ...

The pH scale is not an absolute scale; it is relative to a set of standard solutions whose pH is established by international agreement. ...

The pH scale is not an absolute scale; it is relative to a set of standard solutions whose pH is established by international agreement. ...

stain. Their sensitive surfaces must be touched only when absolutely necessary ...... removers, deoxidizer solutions, etc. (5). Entrapment under fasteners, ...

... Addition was dropwise and with stirring, required ... and 15 mL of absolute ethanol was added, dropwise and with stirring, to a solution of ...

Orbital solutions were obtained for the early-type eclipsing binary LY Aurigae from the light curves

A nonaqueous solution of Br in absolute ethanol (EtOH) has recently been reported to be effective at

Since a Maxwellian plasma is free of absolute instabilities, steady state solutions of (29) can exist for W real, and most generally k ...

time and the movement of the beam at a rate of 3.5per minute. ..... temperatures , voltages, and currents); and to determine the spacecraft attitude solution ...

... specimen controls (individuals with known chromosome number). For chromosome counts, floral buds or root tips were fixed in Carnoy's solution (absolute ethanol ... ...

... use of the large deformation finite element absolute nodal ... in the analysis of rotating blades was examined. ... that are used in rotor blade models, and ...

Recent improvements in chemical analysis of fluid inclusions (using techniques such as LA-ICP-MS, PIXE, SXRF, LIBS and SIMS for individual inclusions, and crush-leach analysis for bulk samples), now permit ratios of certain solute elements to be determined with high accuracy. In order to apply these results to geochemical problems, the element ratios must be converted to ...

The full Raman scattering equations have been solved in a linear density profile in an attempt to overcome the local nature of most previous analyses. The global solution obtained elucidates the transition between absolute and convective Raman instabilities. Feedback linking backward and forward Raman scattering can result in an instability that is ...

The absolute configuration of the guaiane-type sesquiterpene lactone 8-epiisolippidiol-3-O-?-D-glucopyranoside, isolated from plants of the genus Crepis, and the predominant solution-state conformation in CD3OD were determined by comparison of experimental and calculated VCD spectra. It has been found that the reported stereostructure of the compound ...

Solutions of learning problems by Empirical Risk Minimization (ERM) - - and almost-ERM when the minimizer does not exist -- need to be consistent, so that they may be predictive. They also need to be well-posed in the sense of being stable, so that they m...

It is shown that the dual of the problem of minimizing the 2-norm of the primal and dual optimal variables and slacks of a linear program, can be transformed into an unconstrained minimization of a convex, parameter-free, globally differentiable, piecewis...

An evaluation of muscle (pectoralis major) protein turnover using the phenylalanine flood dose technique was assessed in broiler chicks fed graded dietary lysine levels with CP at 170, 210, 250, and 290 g/kg diet. Chicks at 21 d old were injected with 1 mL/100 g BW of a phenylalanine solution (120 micromol L-[ring-2H5)]-phenylalanine). Muscle protein gain was assessed in ...

A solution is given to the classical problem of the minimal surface in three dimensions formed from a repeating cell microstructure under isotropic conditions. The solution is found through a global/local minimization procedure and the resulting basic cell is composed of 14 faces. At the junctions where the ...

In this paper we study the problem of the minimization of the Dirichlet integral over a two-dimensional domain, by non-negative functions satisfying a finite number of linear constraints. Existence and uniqueness of the solution is provded. A characteriza...

For a clutter X of subsets of a finite set E, the minimization problem minimize the set of all wx such that x a member of X, with a positive weight function w defined on E is considered. Let X(sub w) denote the solution set of this problem. Clearly, X(sub...

This work investigates another way of contributing to the radar minimization solution for air vehicles in a threat environment. While much research has been conducted on structural solutions to radar exposure minimization, not much work has been done in t...

The trust region problem, minimization of a quadratic function subject to a spherical trust region constraint, occurs in many optimization algorithms. In a previous paper, the authors introduced an inexpensive approximate solution technique for this probl...

In this study, higher order beam elements are developed based on the absolute nodal coordinate formulation. The absolute nodal coordinate formulation is a finite element procedure that was recently proposed for flexible multibody applications. Many different elements based on the absolute nodal coordinate formulation are introduced, ...

We survey some recent results on periodic solutions for N-body problems that were obtained by variational minimization methods. PMID:16510423

... Control Vector Iteration (CVI) and Control Vector Parameterization (CVP), CVI requires solution of the Euler-Lagrange equations and minimization ...

... neutralized on ice by the careful addition of ammonium hydroxide solution. Resulting neutral solutions were analyzed by UPLC- ... ...

... was added to each 100 mL of sucrose solution. The mixture was kept at 4°C and a fresh solution made every 24 h. To minimize the amount ... ...

Crystals were grown from solution in the earth's gravitational field with the substantial absence of

We propose a method of finding the generalized solutions of nonconvex variational problems by solving an appropriate differential inclusion that is motivated by necessary conditions of optimality for such generalized minimizers.

A simplified solution is presented for the problem of finding a set of points and corresponding weights that will minimize the variance of the estimated value of a Chebyshev regression function at a point outside the interval of observations. This problem...

Generalized solutions of equations of minimal-surface type are studied. It is shown that a solution makes at most countably many jumps at the boundary. In particular, a solution defined in the exterior of a disc extends by continuity to the boundary circle everywhere outside a countable point set. An estimate of ...

Therapeutic drug monitoring allows to determine the best dosage regimen adapted to each patient optimizing the therapeutic benefits, while minimizing the risk for side effects. Here, the first methodological approach based on matrix-assisted laser desorption/ionization source equipped with tandem time-of-flight (MALDI-TOF/TOF) mass spectrometry for the determination of the ...

... Schrijver's submodular function minimization algorithm can be modified to construct in polynomial time a prime or pseudoprime decomposition of ...

... The simplest version of MCM wavelets based on the ... 6. Conclusions and Generalizations ... the solution of the minimization problem (94) without the ...

... a solution that minimally violates the physical dose constraints and EUD constraints. ... proximity function; intensity modulation; radiation therapy. ...

The optimal solution time that minimizes the sum of the two applied impulses necessary to rendezvous

... SOLUTE SUPERSATURATIONS WITH MINIMAL QUENCH-CLUSTERING IN ... IS A LOWER SUPERSATURATION OF QUENCHED-IN VACANCIES ...

... In addition, the solutions were tested for biodegradability under ... Electroplating; Biodegradable; Industrial wastewater; Hazardous waste minimization ...

As demonstrated in this work, all orthogonal matrices solve a first order differential equation. The

A method and apparatus are disclosed for growing in a gravitational field a microscopic crystal from

We use Tikhonov regularization, a special case of L2- norm regularization or ridge regression. The analytical solution to the minimize ...

... Verapamil and nifedipine will, on the other hand, accomplish similar effects: reducing vascular and golmerular abnormalities by minimizing calcium ...

... based on the fact that their solutions minimize certain quadratic functionals, which opens the way to the employment of the Rayleigh-Ritz method. ...

New, efficient solution minimizes run time. Approach based on approved theorem provides formal basis

CONMIN is a FORTRAN program, in subroutine form, for the solution of linear or nonlinear constrained

... however, to ensure that the solution works under the most restrictive conditions, the handheld device will be a personal digital assistant (PDA), not ...

... estimator. The adaptation attempts to minimize the effects of the spherical model approximation used in the solution. Several ...

... A stochastic inverse method computer code which attains a solution by minimizing mean square error ... variability of the unknown field to decrease ...

Many points of reference have been used to compare and rationalize extracorporeal end-stage renal disease therapy. We address a specific part of the subject: the effect of the delivery schedule on a predetermined dose of dialysis, e.g., weekly Kt/V. Steady (time-invariant) application of dialysis absolutely minimizes time-averaged and peak concentrations ...

A general method for the measurement of absolute rate constants for the termination of photochemically produced organic free radicals in solution has been developed. Radicals are generated in the cavity of an EPR spectrometer by high intensity uv irradiat...

If a solution of the wave equation in free space has initial data that are of compact support, then by the strict Huyghens' principle the solution is identically zero at every point x(0), t(0) for which the sphere, the absolute value of (x-x(0))=t(0) does...

We present expressions for absolute and relative errors in individual components of the solution to systems of linear equations. We consider three kinds of linear systems: non-singular, underdetermined of full row rank, and least squares of full column ra...

... after deparaffinization, sections were treated with quenching solutions (3% hydrogen peroxide in absolute methanol), rinsed with water, digested in 0.4% pepsin, rinsed in blocking solution (0.5% casein), t...

A determination of the absolute activity of radioactive phosphorus solutions by the definite body-carbon method is described. The method gives reproducible results within hr at 1500 deg 2%.

Absolute thresholding of channel 3 (T-3) and the channel 3/4 difference (T-34) was more effective than contextual analysis in minimizing false detections, ...

A high count rate 4 pi beta - gamma coincidence counting system for the determination of absolute disintegration rates of short half-life radionuclides is described. With this system the dead time per pulse is minimized by not stretching any pulses beyond...

A suspended-load backpack designed to permit the load to move relative to the backpack frame during walking and running so that the large movements between the load and the frame of the backpack reduce the fluctuations of absolute vertical motion of the l...

The development of an ionisation chamber for measuring gamma exposure rates in graphite thermal reactors is described. Through careful design, the absolute thermal neutron sensitivity has been minimized.

Both the free and hindered rotation of atoms or groups of atoms about single chemical linkages may be studied with the Debye relation between the molar polarization, P, and the reciprocal of the absolute temperature, 1T. The quantitative treatment by one of us for the simplest case of a free rotation has been compared with the more recent and more general expressions of Eyring ...

Dichlorocarbene is the cornerstone of singlet carbene reactivity. Moss has thoroughly characterized carbenic selectivity in cyclopropanation reactions. The reactivity of any singlet carbene (:CXY) may be standardized by comparison of its reactivity toward a standard set of alkenes with that of chlorocarbene (:CCl{sub 2}). Amazingly, however, the absolute kinetics of this ...

The equation {delta}u=f(x,y)e{sup cu} is considered in the case when the coefficient f(x,y) is the absolute value or the square of the absolute value of some holomorphic function. In this case a full description of the general solution of the equation is presented. Several problems usually posed for elliptic equations are also ...

Sixty-five patients with axillary hyperhidrosis took part in a trial of treatment with a solution of 20% aluminium chloride hexahydrate in absolute alcohol, applied topically each night for a week and then whenever the patient thought it necessary. Excellent control of sweating was achieved in 64 patients, and occlusion of the area was found to be ...

Stability analysis of an arbitrary-finesse ring cavity containing a Kerr medium of arbitrary response time reveals an absolute minimum threshold for the driving intensity necessary for realization of self-pulsing instabilities. This threshold is minimized not only with respect to cavity mistuning but also with respect to the medium's response time. The ...

SummaryA minimally invasive electrical recording and stimulating technique capable of simultaneously monitoring the activity of a significant number (e.g., 10³ to 10⁴) of neurons is an absolute prerequisite in developing an effective brain�machine interface. Although there are many excellent methodologies for ...

Censored median regression has proved useful for analyzing survival data in complicated situations, say, when the variance is heteroscedastic or the data contain outliers. In this paper, we study the sparse estimation for censored median regression models, which is an important problem for high dimensional survival data analysis. In particular, a new procedure is proposed to ...

The European Space Agency (ESA) Earth observation satellite Envisat was successfully launched on 1 March 2002 by an Ariane-5 launcher. Onboard Envisat are a wide range of different instruments. One of these is the new dual frequency Radar Altimeter (RA-2). This new altimeter combined with the Microwace Radiometer for atmospheric correction, the laser retroreflector and the DORIS system for ...

The absolute value learning objective in high school mathematics requires students to solve far more complex absolute value equations and inequalities. When absolute value problems become more complex, students often do not have sufficient conceptual understanding to make any sense of what is happening mathematically. The authors ...

A set S that has a non-empty intersection with every set in a collection of sets C is called a hitting set of C. If no element can be removed from S without violating the hitting set property, S is considered to be minimal. Several interesting problems can be partly formulated as ones that a minimal hitting set or more ones have to be found. Many of these ...

We undertook to determine the extent to which the inhibition in absolute proximal fluid reabsorption in response to expansion of extracellular volume with noncolloid-containing solutions is the result of concomitant reductions in postglomerular (efferent arteriolar) protein concentration. Selective elevation of efferent arteriolar oncotic pressure in ...

A numerical method is presented that allows one to obtain steady or zonally moving (i.e., form-preserving) solutions of the barotropic vorticity equation on a sphere. The solutions are characterized by nonlinear functional relationships between the streakfunction (the streamfunction in a steady or zonally moving frame of reference) and the ...

Four anion exchange resins will be tested to confirm that they will sorb and release plutonium from/to the appropriate solutions in the presence of other cations. Certain cations need to be removed from the test solutions to minimize adverse behavior in o...

Solutions of the initial boundary value problems for Navier-Stokes equations are approximated by solutions of the initial boundary value problem. We study the nearness of solutions of these problems in suitable norms and also the nearness of their minimal global B-attractors.

We analyze the implications of the infrared quasi fixed point solution for the top quark mass in the Minimal Supersymmetric Standard Model. This solution could explain in a natural way the relatively large value of the top quark mass and, if confirmed exp...

It is shown that there exist several anisotropic solutions for the non-minimal coupled electromagnetic and gravitational field equations. A solution to vacuum is firstly presented, and afterwards a solution with matter and electric field, where the photon...

A semilinear parabolic equation describes the neutron flux in a one- region cylindrical configuration. Steration schemes establish existence of maximal and minimal solutions, and a quasilinearization method is used to construct a sequence which converges uniformly to the solution. (DG)

A procedure is developed which can be used to obtain the solution of a two-sided allocation problem (one in which there are two sides allocating resources with opposing interests). The method may be used for the solution of maximization, minimization or m...

The requirements for computer-generated perspective projections of three dimensional objects has escalated. A general solution was developed. The theoretical solution to this problem is presented. The method is very efficient as it minimizes the selection...

Nonconvex nonsmooth regularization has advantages over convex regularization for restoring images with neat edges. However, its practical interest used to be limited by the difficulty of the computational stage which requires a nonconvex nonsmooth minimization. In this paper, we deal with nonconvex nonsmooth minimization methods for image restoration and ...

We aim at developing methods to track minimal energy solutions of time-independent m-component coupled discrete nonlinear Schr�dinger (DNLS) equations. We first propose a method to find energy minimizers of the 1-component DNLS equation and use it as the initial point of the m-component DNLS equations in a continuation scheme. We ...

An algorithm is presented to solve multiple assignment problems in which a cost is incurred only when an assignment is made at a given cell. The proposed method recursively searches for single/group absolute points to identify cells that must be loaded in any optimal solution. Unlike other methods, the first solution is the optimal ...

Under-determined linear inverse problems arise in applications in which signals must be estimated from insufficient data. In these problems the number of potentially active sources is greater than the number of observations. In many situations, it is desirable to find a minimal source solution. This can be accomplished by minimizing a ...

We compare numerical solution of the ''minimal'' three-body equations obtained from unitarity and analyticity with the full Schrodinger solution in a simple three-boson model. We find that for short-range forces the minimal equations give the correct shape, but not ...

In this paper a particular family of deterministic automata that was built to reach the worst case complexity of Hopcroft's state minimization algorithm is considered. This family is also challenging for the two other classical minimization algorithms: it achieves the worst case for Moore's algorithm, as a consequence of a result by Berstel et al., and is ...