accurate model representation of the water cycle and its role in climate ... global water cycle (GWC) based on up to date observational resources [Oki and Kanae ...
NASA Website
wind tunnel wall effects, model blockage effects, and condensation effects. Technology Spinoff. The F-8 SCW program required an accurate Mach number ...
Interception is an important component of the forest water balance that cannot be ignored where accurate water balance estimates are desired. The state of modelling the interception of rainfall has been greatly improved by the development of models using ...
National Technical Information Service (NTIS)
Because of the crucial role snowmelt plays in many watersheds around the world, it is important to understand and accurately quantify the melt process. As such, numerous mathematical models attempting to describe and predict snowmelt have arisen. There are two main categories of ...
EPA Science Inventory
A combination of accurate, selected analytical determinations and a competent geochemical model constitutes the only possible means of achieving a sufficiently thorough and reliable aqueous speciation of waters for the evaluation of societal risks resulti...
The unit learning curve plays a prominent role in DOD cost analysis. In those cases where the model accurately describes the real-life situation, i.e., when the model is properly applied to the data, it can be a powerful tool for predicting unit productio...
Towards the overall goal of making an accurate mathematical model of a neocortical pyramidal neuron, (1) the electrical properties of Na+ and Ca2+ channel subtypes were measured in sufficient detail to construct a quantitative empirical model, and (2) ant...
In this contribution the author discusses models of two-body strong hadron decays. These models are expected to play a vital role in future attempts to identify unconventional hadrons such as glueballs and hybrids, through accurate predictions of the deca...
... Title : SIMPLE AND ACCURATE CALIBRATION MODEL FOR HYDROGEN- CONTENT, BETA-PARTICLE BACKSCATTER GAUGES. ...
DTIC Science & Technology
This report describes the shielding model development for the JB-Line Upgrade project. The product of this effort is a simple-to-use but accurate method of estimating the personnel dose expected for various operating conditions on the line. The current techniques for shielding calculations use transport codes such as ANISN which, while ...
Energy Citations Database
Excitation of atomic copper by electron impact plays an important role in the copper vapor laser and accurate cross sections are needed for understanding and modeling laser performance. During the past seven years, there have been several attempts to norm...
A multi-zone model has been developed that accurately predicts HCCI combustion and emissions. The multizone methodology is based on the observation that turbulence does not play a direct role on HCCI combustion. Instead, chemical kinetics dominates the pr...
This briefing includes NIMA's mission which is to provide timely relevant and accurate imagery, imagery intelligence, and geospatial information in support of the national security objectives of the United States. It discusses NIMA's role as a data produc...
... techniques, (2) evaluate the roles of diffusion and advection in a forest soil on the estimates of ( ... transport was little to non-existent; however, an advection-diffusion model was more accurate than a...
NBII National Biological Information Infrastructure
... Unsteady or time-accurate CFD modeling Competent smart munitions that can more accurately hit a ... cubic k-& model, depending on grid fineness. ...
... Title : Accurate Pairing Treatment of the Coulomb Interaction in the Anderson Model of a Localized Moment in a Metal. ...
... Title : ACCURATE DETERMINATION OF THE MOMENT OF INERTIA AND CENTER OF GRAVITY POSITION OF WIND TUNNEL MODELS. ...
Accurate estimation of the in vivo locations of skeletal landmarks plays an integral role in several biomechanical research techniques. Because of rounding errors caused by instruments or skin movement, the data obtained through cinematography are usually not accurate and rise to a distance matrix which, because of the data errors, may ...
PubMed
This paper presents a numerical and an experimental investigation on the ferroresonance in a LCR series electric circuit with the aim of deepening the effects of the magnetization phenomena in the ferromagnetic core. In the experiments an Epstein-like FeSi core, enabling an accurate material characterization under the same test conditions, constitutes the non-linear ...
NASA Astrophysics Data System (ADS)
... at explaining the response to hypoxia and hypercapnia ... More accurate lung injury model. ... accurate determination of lung injuries, including location ...
... Accession Number : ADA396425. Title : Accurate Multiresolution Modeling of the Earth's Gravitational Field. Descriptive ...
... Accession Number : ADA534986. Title : Accurate Modeling of Ionospheric Electromagnetic Fields Generated by a Low Altitude VLF Transmitter. ...
The influence of parallel'' viscosity on the resistive tearing'' mode in a cylindrical model of a plasma is investigated for a hard-core pinch. Iterative solutions of the basic equation indicate that the destabilization suggested by a previous cartesian model is not substantiated, and in fact under extreme ...
We developed an improved model in order to predict the RF behavior and the slow light properties of the SOA valid for any experimental conditions. It takes into account the dynamic saturation of the SOA, which can be fully characterized by a simple measurement, and only relies on material fitting parameters, independent of the optical intensity and the injected current. The ...
Concern regarding human induced changes in the chemical and radiative properties of our atmosphere through increased emission of trace gas species has received considerable attention. Effective models are needed to understand the future of ozone, global warming and other important anthropogenic perturbations before policy decisions can be considered. In order to ...
In this paper, we discuss the accuracy of resist model calibration under various aspects. The study is done based on an extensive OPC dataset including hundreds of CD values obtained with immersion lithography for the sub-30 nm node. We address imaging aspects such as the role of Jones matrices, laser bandwidth and mask bias. Besides we focus on the ...
The ejection of atoms by the ion bombardment of solids is discussed in terms of linear collision cascade theory. A simple argument describes the energies of the ejecta, but elaborate models are required to obtain accurate sputtering yields and related quantities. These include transport theoretical models based on linearized Boltzmann ...
Accurate estimation and prediction of healthcare costs play crucial roles in decisions made by healthcare agencies on policy and resource allocation. Development of a cost model allows these decision-makers the opportunity to investigate the impact of different policies and/or allocations of resources. With increased subject-specific ...
Marsupials, such as the tammar wallaby (Macropus eugenii), have adopted a reproductive strategy that is very different to eutherians. Both the rate of production and the composition of milk changes progressively during the lactation cycle to meet the nutritional demands of an altricial young. The tammar therefore provides a valuable model to study changes in milk composition, ...
Recent calculations have significantly decreased the scheme and residual scale dependence of basic radiative corrections of the Standard Electroweak Model. This leads to a theoretically accurate prediction of the W-boson mass MW, as well as a reduced upper bound for the Higgs boson mass MH. The implications of a precise MW measurement on the MH estimate ...
We have measured several Q values at JYFLTRAP for superallowed ? decays that contribute to testing the Standard Model and candidate nuclei that one could use for the search of neutrinoless double- ? decay. These results play important roles in the research of fundamental physics that have scopes beyond Standard Model.
Objectives. To evaluate the usefulness of a role-play model in developing students' patient-care skills in a first-year undergraduate pharmacy practice course.Design. A role-play model was developed and implemented in workshops across 2 semesters of a year-long course. Students performed different ...
Objectives. To evaluate the usefulness of a role-play model in developing students� patient-care skills in a first-year undergraduate pharmacy practice course.Design. A role-play model was developed and implemented in workshops across 2 semesters of a year-long course. Students performed different ...
PubMed Central
The diversity of teacher roles has been a long-standing concern in the field of special education. Role complexity has been implicated in teacher burnout and attrition and in the inefficiency of service delivery models. Recent evidence suggests that new policy may be further complicating teacher roles and that ...
ERIC Educational Resources Information Center
... Title: An Efficient and Accurate Method of Estimating Substrate ... This thesis presents a Z-parameter based model to predict the substrate ...
... to) - Title and Subtitle Accurate Identification of Evoked Potentials by Waveform Decomposition Using Discrete Cosine Transform Modeling ...
... Title : Accurate Identification of Evoked Potentials by Waveform Decomposition Using Discrete Cosine Transform Modeling. ...
... for an Electronics Capital Equipment Manufacturer. ... accurate inventory demand forecasting is becoming ... need for accurate forecasts and adequate ...
The primary requirement for any engineering model is to provide the user accurate ... Thus, any engineering model must include an accurate assessment of the ...
The development of accurate numerical model of the atmospheric general circulation experiment (AGCE)
NASA Technical Reports Server (NTRS)
... An accurate and useful model will require coupling sediment-transport with hydrodynamic forcing and stratigraphy. The ...
The assumption on the mass error distribution of fragment ions plays a crucial role in peptide identification by tandem mass spectra. Previous mass error models are the simplistic uniform or normal distribution with empirically set parameter values. In this paper, we propose a more accurate mass error model, namely ...
Modeling and simulation form an integral role in the engineering design process. An accurate mathematical description of a system provides the design engineer the flexibility to perform trade studies quickly and accurately to expedite the design process. Most often, the mathematical model of ...
I will discuss the physical principles lying behind the acquisition of accurate positional information in bacteria. A good application of these ideas is to the rod-shaped bacterium E. coli which divides precisely at its cellular midplane. This positioning is controlled by the Min system of proteins. These proteins coherently oscillate from end to end of the bacterium. I will ...
An accurate impedance model of a skull plays an important role in the simulation research on source localization of EEG and brain EIT (electrical impedance tomography), etc. On the basis of the large number of impedance and resistivity data obtained from our previous measurement on the live human skull, in this study we established the ...
Recent work with a wind turbulence model has demonstrated that the effects of wind turbulence may be large. This work also illustrates that turbulence models do not need to accurately reproduce all the details in the physical wind to be of benefit to the wind turbine community. Their use, however, will be facilitated if they are ...
Econometrics and traditional modeling have not accurately forecast the effects of prices and policies on future oil supplies. A lack of specific data and the assumption that field behavior is too erratic for successful modeling have been obstacles to using a less-aggregated analysis. A study of exploration behavior as it relates to a ...
An integrated simulation capability is being developed to examine the fidelity of a dynamic radiographic system. This capability consists of a suite of simulation codes which individually model electromagnetic and particle transport phenomena and are chained together to model an entire radiographic event. Our study showed that the electron beam spot size ...
DOE Information Bridge
Estimating vegetation cover, water content and dry biomass from space plays a significant role in a variety of scientific fields including drought monitoring, climate modeling, and agricultural prediction. However, getting accurate and consistent measurements of vegetation is complicated very often ...
Technology Transfer Automated Retrieval System (TEKTRAN)
Accurate assessment of vegetation canopy optical properties plays a critical role in monitoring natural and managed ecosystems under environmental changes. In this context, radiative transfer (RT) models simulating vegetation canopy reflectance have been demonstrated to be a powerful tool for unders...
Sunspots have fascinated mankind right from their first detection. Now, state-of-the art telescopes, combined with the muscle of a supercomputer called "Bluefire," are allowing scientists to come to a physics understanding of sunspots and to accurately model their structure and dynamics. Better understanding of sunspots also will help scientists sort out ...
NSDL National Science Digital Library
Over the past year additional experimental results and more accurate modeling were obtained for the grain boundary chemistry and structure of controlled purity alloys 690 and X-750 material as a function of thermal treatment. High purity heats of Ni-30Cr-...
Accurate modeling of tire-pavement contact behavior (i.e., distribution of contact tractions at the interface) plays an important role in the analysis of pavement performance and vehicle driving safety. The tire-pavement contact is essentially a rolling c...
Adaptive Friction Compensation for Servo Mechanisms J. Wang, S. S. Ge, and T. H. Lee Department@nus.edu.sg Abstract Friction exists in all machines having relative motion, and plays an important role in many servo, accurate friction modeling and effective compensation techniques have to be investigated. In this chapter
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