Optimal use of limited resources as nucleus and testing capacity is important when organizing crossbreeding schemes in pigs. This paper introduces a method of modelling pig crossbreeding schemes consisting of nucleus, multiplier and commercial tiers. As an efficient alternative to the gene flow method (Hill, W.G. 1974. Anim. Prod. 18, 117-139), lag, original genetic level and annual genetic improvement for each line and cross are combined into one single evaluation criterion, the average discounted revenues of the breeding scheme. An optimum allocation of nucleus and testing capacity within breeding schemes, as well as an optimum solution between schemes can be found. As an example, the optimization of a four-way crossbreeding scheme is shown. the optimum allocation of nucleus capacity was 35% and 15% in each dam line and sire line, respectively. The corresponding figures for testing capacity were 23% and 27%.
A series of experiments was performed to evaluate the effectiveness of commercially available surfactants for steam-foam EOR applications in light oil reservoirs. The experiments were performed in a 3-ft long, 1-1/2 in.-diameter cylindrical sandpack of about 1 darcy permeability. The sandpack and injected fluids were preheated to 430{degree}F at 155 psi. The main objective of these tests was to investigate the effectiveness of several surfactants in providing mobility control under a variety of conditions expected in light-oil steamfloods. Thus, maximum pressure-rise and foam-bank buildup/decay were noted as operating conditions were changed in a test or in various tests. Tests were performed with various oil types, sacrificial salts, injection rates, injection strategies, vapor-to-liquid fractions (VLF), and steam/N{sub 2} ratios (SNR).
The production of a theatre play involves a wide range of artists: dramaturge, author, director, costume designer, set designer, choreographer, stage manager, musician and actors. Normally if you as a spectator or critical reporter are analyzing a theatre play it is only possible to pick out a few ideas which draw your attention.Often it is difficult to compare the views of different spectators because they focus on separate aspects of the production. In an attempt to analyze what impressed the spectators in a community play from Brazil, Beatrice Cabral and Dan Olsen use a quantitative research method
Capillary Pressure Curves for Low Permeability Chalk Obtained by NMR Imaging of Core Saturation Profiles Jens Vinther Norgaard; Jens Vinther Norgaard Technical University of Denmark Search for other works by this author on: This Site Google Scholar Dan Olsen; Dan Olsen Geological Survey of Denmark Search for other works by this author on: This Site Google Scholar Niels Springer; Niels Springer Geological Survey of Denmark Search for other works by this author on: This Site Google Scholar Jan Reffstrup Jan Reffstrup Technical University of Denmark Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, October 1995. Paper Number: SPE-30605-MS https://doi.org/10.2118/30605-MS Published: October 22 1995 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Norgaard, Jens Vinther, Olsen, Dan, Springer, Niels, and Jan Reffstrup. "Capillary Pressure Curves for Low Permeability Chalk Obtained by NMR Imaging of Core Saturation Profiles." Paper presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, October 1995. doi: https://doi.org/10.2118/30605-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Annual Technical Conference and Exhibition Search Advanced Search AbstractA new technique for obtaining water-oil capillary pressure curves, based on NMR imaging of the saturation distribution in flooded cores is presented.In this technique, a steady state fluid saturation profile is developed by flooding the core at a constant flow rate, At the steady state situation where the saturation distribution no longer changes, the local pressure difference between the wetting and non-wetting phases represents the capillary pressure.The saturation profile is measured using an NMR technique and for a drainage case, the pressure in the non-wetting phase is calculated numerically. The paper presents the NMR technique and the procedure for calculating the pressure distribution in the sample.In homogeneous samples produce irregular saturation profiles, which may be interpreted in terms of variation in permeability, porosity, and capillary pressure.Capillary pressure curves for North Sea chalk obtained by the new technique show good agreement with capillary pressure curves obtained by traditional techniques.IntroductionAccurate petrophysical properties of reservoir rock such as capillary pressure, permeability, and relative permeability functions are essential as input for reliable oil in place estimations and for the prediction of the reservoir performance.Traditional methods for capillary pressure measurements are the mercury injection method, the diaphragm method and the centrifuge method.In the mercury injection method, the non-wetting phase is mercury which displaces a gas. The samples are usually evacuated to a low pressure and Hg is then injected in steps allowing for pressure equilibrium at each step, or alternatively Hg is continuously injected. Corresponding data on injected volume of Hg and the injection pressure are recorded. This technique is widely used for measuring capillary pressure functions for low permeable rocks. This is primarily because it is generally believed that pressure equilibrium in each pressure step is readily obtained, while this is normally a problem for other methods where a liquid is the wetting phase. The disadvantage of this technique is the uncertainty in the scaling of the measured data to reservoir fluid data and conditions.In the diaphragm method or porous plate method, the problem concerning the scaling of the measured data is avoided, since this technique allows for the direct use of reservoir fluids. The water saturated sample is placed on a water wet diaphragm to impose a boundary condition Pc=0 to the wetting phase, i.e. the wetting phase is allowed to drain through the outlet end of the sample, at the same time as the non-wetting phase (oil or gas) is impeded. Pressure is added to the non-wetting phase and through a limited number of pressure steps, the capillary pressure curve is recorded. However, an important requirement is that equilibrium is obtained at each pressure step. This is the major problem when the diaphragm method is used on microporous materials. The drainage time may be considerable during each step e.g. several weeks. In recent studies, thin micropore membranes have been used in an attempt to reduce the experimental time. Such a reduction will be less pronounced for low permeable rocks such as chalk since the flow resistance in the core is relatively more important.P. 807 Keywords: capillary pressure function, upstream oil & gas, procedure, centrifuge method, experiment, low permeability chalk, permeability, equilibrium, flow in porous media, nmr imaging Subjects: Reservoir Fluid Dynamics, Formation Evaluation & Management, Flow in porous media This content is only available via PDF. 1995. Society of Petroleum Engineers You can access this article if you purchase or spend a download.
The subject of User Interface Management Systems (UIMS) has been a topic of research and debate for the last several years. The goal of such systems has been to automate the production of user interface software. The problem of building quality user interfaces within available resources is a very important one as the demand for new interactive programs grows. Prototype UIMSs have been built and some software packages are presently being marketed as such. Many papers have been published on the topic.
article Free AccessThe interaction technique notebook: Bookmarks: an enhanced scroll bar Author: Dan R. Olsen Brigham Young University, Computer Science Department, Provo, UT Brigham Young University, Computer Science Department, Provo, UTView Profile Authors Info & Claims ACM Transactions on GraphicsVolume 11Issue 3July 1992 pp 291–295https://doi.org/10.1145/130881.370595Published:01 July 1992Publication History 10citation454DownloadsMetricsTotal Citations10Total Downloads454Last 12 Months10Last 6 weeks1 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
Internet-based video delivery offers new opportunities for interactive television. The creation and usability of interactive television is very different from desktop or web-based interaction. The concepts of frameworks and genres provides an approach to learnable interaction in an entertainment rather than task-oriented activity. The concept of a framework defines the tools required for both producing and viewing a particular style of interactive video experience. An interactive framework for televised sports is presented. This framework implements a sports television experience that support play-by-play navigation as well as viewer's interactive choice of camera angles. Tools for creating and viewing interactive sports are developed in parallel. In-home and in-lab experiments give indications of how sports fans will use interactive television in the future. The experiments demonstrate that fans will use the interaction rather than passively watching, can easily learn the interactive features and strongly prefer the new features over tradition rewind/fast-forward. The data indicates that many users will use the interactive controls to enrich and prolong their viewing rather than simply skipping as rapidly as possible through a game. However, there is also indication that some viewers will simply skip rapidly. There are also indications that the skip vs. review interaction depends on the interest level of current game play.
