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Sample records for bucket foundations vol

  1. Bucket foundations

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo

    In this report, bearing behaviour and installation of bucket foundations are reviewed. Different methods and standards are compared with the experimental data presented in Foglia and Ibsen (2014a). The most important studies on these topics are suggested. The review is focused on the response of...... monopod bucket foundations supporting offshore wind turbines....

  2. The Monopod Bucket Foundation

    DEFF Research Database (Denmark)

    Bakmar, Christian LeBlanc; Ahle, Kim; Nielsen, Søren A.;

    2009-01-01

    Following the successful installation of a prototype of a monopod bucket foundation, also called a “monopod suction caisson”, at Horns Rev 2 Offshore Wind Farm, Denmark, in 2009, DONG Energy is currently developing a commercialization strategy. The monopod bucket foundation is a promising foundat......, further research, development and prototype testing are required, before the monopod bucket foundation can be commercialized.......Following the successful installation of a prototype of a monopod bucket foundation, also called a “monopod suction caisson”, at Horns Rev 2 Offshore Wind Farm, Denmark, in 2009, DONG Energy is currently developing a commercialization strategy. The monopod bucket foundation is a promising...... foundation concept for offshore wind turbines and can be installed using suction assisted penetration, combined with other installation methods. This selfinstalling foundation concept, may avoid the use of expensive jack-ups and scour protection, and thus significantly reduces installation costs. However...

  3. Buckling of Bucket Foundations

    DEFF Research Database (Denmark)

    Madsen, Søren; Andersen, Lars Vabbersgaard; Ibsen, Lars Bo

    In this paper, the risk of structural buckling during installation of large-diameter bucket foundations is addressed using numerical methods. Imperfect geometries are introduced based on the pre-buckling mode shapes from a linear Eigenvalue buckling analysis. Various imperfect geometries are...

  4. Impedance of Bucket Foundations

    DEFF Research Database (Denmark)

    Andersen, Lars; Ibsen, Lars Bo; Liingaard, Morten

    2008-01-01

    paper concerns the analysis of bucket foundations with focus on torsional motion and coupled horizontal sliding and rocking. The frequency-dependent stiffness is found by means of a three-dimensional coupled boundary-element/finite-element scheme. Comparisons are made with known analytical and numerical...

  5. Scour Development around Bucket Foundations

    DEFF Research Database (Denmark)

    Stroescu, Ionut Emanuel; Frigaard, Peter Bak; Fejerskov, Morten

    2015-01-01

    The design without scour protection is a sensitive topic to most offshore developers, especially in the North Sea. However, newer research show that this concept is realistic if exists extended comprehension of the scour and backfill phenomena. The present paper shows comparative results for...... monopile and Bucket Foundation; using experimental analysis and real scour surveys around offshore installed Bucket Foundations. The main finding reflect that Bucket Foundation is a candidate for design without scour protection behaving like scour protected monopoles, in a variety of environmental...

  6. Characteristic Behavior of Bucket Foundations

    DEFF Research Database (Denmark)

    Barari, Amin

    design of offshore wind turbine foundations. The work was divided into two main research efforts: geotechnical engineering experiments to gain insight into the behavior of offshore bucket foundations, and development of methods to improve the study of infiltration into unsaturated soils, an important...

  7. Static Behaviour of Bucket Foundations

    DEFF Research Database (Denmark)

    Larsen, Kim André

    . The monopod concept is investigated in this thesis, regarding the static behaviour from loads relevant to offshore wind turbines. The main issue in this concept is the rotational stiffness of the foundation and the combined capacity dominated by moments. The vertical bearing capacity of bucket...

  8. Characteristic Behavior of Bucket Foundations

    DEFF Research Database (Denmark)

    Barari, Amin

    political and industrial forces(particularly in northern Europe) supporting the development of the offshore wind industry. The overall aim of the research presented in this thesis was to improve the design of offshore wind turbine foundations. The work was divided into two main researchefforts: geotechnical...... engineering experiments to gain insight into the behavior of offshore bucket foundations, and development of methods to improve the study of infiltration intounsaturated soils, an important problem in geo-environmental engineering. The outcomes of the research have the potential to directly or indirectly...... reduce the risks and costsrelated to offshore geotechnics. The thesis examines: 1.Characteristic Behavior of Bucket Foundations 2. Modeling of Water Flow through Porous Media The outcomes of each of the research contributions are summarized in four research articles, either directly or indirectly, and...

  9. Instability of Bucket Foundations during Installation

    DEFF Research Database (Denmark)

    Madsen, Søren; Andersen, Lars Vabbersgaard; Ibsen, Lars Bo

    The bucket foundation is an upcoming technology for offshore wind turbines. The bucket foundation is a large cylindrical monopod foundation constructed as a thin steel shell structure. A bucket foundation does not require heavy installation equipment since it is installed by suction forces. The...... combination of a thin shell structure and suction forces leads to the fact that instability, in form of buckling, becomes a crucial issue during installation. The hydrostatic buckling pressure of the bucket foundation is addressed using three-dimensional, non-linear finite element analysis. The results of the...

  10. Bucket Foundation Response Under Various Displacement Rates

    DEFF Research Database (Denmark)

    Vaitkunaite, Evelina; Nielsen, Benjaminn Nordahl; Ibsen, Lars Bo

    2016-01-01

    The present testing program aims at showing the pore pressure response around a bucket foundation skirt as well as the load and displacement change due to ten different displacement rates. Research findings are useful for a numerical model calibration focusing on the design of the upwind foundation...... in a multi-bucket foundation system. The foundation model is at a scale of approximately 1:20 prototype foundation size. The tests are performed in a pressure tank with the foundation model installed in dense sand. Based on the data, the conclusion is that the bucket foundation design in a storm case...

  11. Scour and Scour Protection for Bucket Foundations

    DEFF Research Database (Denmark)

    Larsen, Brian Juul; Frigaard, Peter

    A test programme has been performed to determine the scour around a bucket foundation for an offshore windturbine. furthermore the necessary scour protection has been investigated.......A test programme has been performed to determine the scour around a bucket foundation for an offshore windturbine. furthermore the necessary scour protection has been investigated....

  12. Bucket foundations under lateral cyclic loading

    DEFF Research Database (Denmark)

    Foglia, Aligi

    energy market. This thesis addresses issues concerning monopod bucket foundations in the hope of providing tools and ideas that could be used to optimize the design of this sub-structure. The work is focussed on the behaviour of bucket foundations under lateral cyclic loading. Other related and...

  13. Monopod bucket foundations under cyclic lateral loading

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo

    The monopod bucket foundation can be a cost-reducing sub-structure for offshore wind turbines. To avoid problems during the turbine operation, the long-term effect of cyclic loading must be considered in the design of the foundation. In this paper a 1g testing rig is adopted to extend the knowledge...... on bucket foundations under lateral cyclic loading. The test setup is described in detail and a comprehensive experimental campaign is presented. The foundation is subjected to cyclic overturning moment, cyclic horizontal loading and constant vertical loading, acting on the same plane for thousands...

  14. Monopod Bucket Foundations Under Cyclic Lateral Loading

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo

    2016-01-01

    The monopod bucket foundation has the potential to become a cost-reducing substructure for offshore wind turbines. To avoid problems during the energy converter operation, the long-term effect of cyclic loading must be considered in the design of the foundation. In this paper, a 1-g testing rig is...

  15. Stiffness Formulation of Flexible Bucket Foundation

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Liingaard, Morten; Larsen, Kim André

    as a substructure with predetermined properties. The interaction between the foundation and structure is expressed purely in terms of force and moment resultants, and their conjugate displacements and rotations. The Macro Model modelling the Bucket Foundation is suitable for implementation in an......The response of offshore wind turbines e.g. static, eigen frequencies and eigen modes, are affected by elastic properties of the foundation and the subsoil. The Elastic Macro Model is developed to evaluate the soil-structure interaction of flexible bucket foundations for offshore wind turbines so...... that it can be properly included and analysed in a composite structure-foundation system. The typical approach for analysing the structure-foundation system is to use a finite-element method. Such an approach is, however, inefficient and time consuming. The Elastic Macro Model describes the foundation...

  16. Adaptive plasticity model for bucket foundations

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Barari, Amin; Larsen, Kim A.

    2014-01-01

    first method is only capable of determining the capacity of the foundations and not the prepeak behavior. Thus, a new strain-hardening criterion is developed by calibrating failure criteria by employing data from small-scale tests on bucket foundations subjected to static loads. The shape of the yield......, potential, and failure surfaces are found to be dependent on the embedment ratio (i.e., ratio of skirt length to the diameter) and load path. For the models tested, associated flow is observed to be plausible in the radial planes, whereas nonassociated flow is observed in the planes along the V-axis....

  17. Vertical Capacity of Bucket Foundations in Undrained Soil

    DEFF Research Database (Denmark)

    Barari, Amin; Ibsen, Lars Bo

    2014-01-01

    Offshore wind turbine structures are traditionally founded on gravity concrete foundations or mono-piles. Bucket foundations were developed for the offshore oil and gas industry and are now being used in wind turbine construction. The loading in this application is characterized by a vertical load...... due to the slender construction combined with horizontal forces inducing a large overturning moment. Field tests on bucket foundations were performed to gain insight into the vertical load response of bucket foundations in clay soils. The field tests were accompanied by finite element numerical...... simulations in order to provide a better understanding of the parameters influencing bucket foundation behavior....

  18. Undrained Response of Bucket Foundations to Moment Loading

    DEFF Research Database (Denmark)

    Barari, Amin; Ibsen, Lars Bo

    2012-01-01

    Bucket foundation as a large cylindrical structure that is open at the base and closed at the top, is recently being used within the offshore wind turbines projects. The bearing capacity of bucket foundations to moment loading in undrained soil is of interest particularly to the offshore...... geotechnical engineers. This paper presents the experimental and numerical results of moment loading on small scale models of bucket foundations installed on Yoldia clay. The moment loading is experienced via the horizontal forces applied to features on a tower installed on bucket foundations. Different arm...

  19. Small-scale Testing of Bucket Foundations in Sand

    DEFF Research Database (Denmark)

    Knudsen, Bjørn S.; Østergaard, Martin Underlin; Ibsen, Lars Bo

    skirt will provide valuable information of the quasi-static behaviour. For a number of small-scale tests performed in the laboratory at Aalborg University, a bucket foundation will be loaded with varying velocity to investigate the dissipation and general behaviour of bucket foundations used as offshore...

  20. Optimal Design of Stiffeners for Bucket Foundations

    DEFF Research Database (Denmark)

    Courtney, William Tucker; Stolpe, Mathias; Buhl, Thomas; Bitsche, Robert; Hallum, Nicolai; Nielsen, Søren A.

    2015-01-01

    The potential for structural optimization of the bucket foundation’s outer stiffeners is investigated using commercial optimization software. In order to obtain the optimal design both shape and topology optimization problems are formulated and solved using the structural optimization software...

  1. Effect of embedment on the plastic behaviour of Bucket Foundations

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Barari, Amin; Larsen, Kim André

    2015-01-01

    studies have indicated the possibility of defining foundation response using plasticity theory. Results of multiple loading tests addressing the effect of embedment on the strain-hardening behavior of shallow bucket foundations under combined loading are reported. The kinematic mechanisms accompanying pre...

  2. Cost-Effective Mass Production of Mono Bucket Foundations

    DEFF Research Database (Denmark)

    Gres, Szymon; Nielsen, Søren Andreas; Fejerskov, Morten;

    2015-01-01

    for innovative and cost-effective design of Mono Bucket foundations. Established approach merges wind and wave load models, soil/structure interaction topics, structural optimization and installation/fabrication aspects, into software package with ability to perform optimal design of the individual foundations...

  3. Lumped-parameter Model of a Bucket Foundation

    DEFF Research Database (Denmark)

    Andersen, Lars; Ibsen, Lars Bo; Liingaard, Morten

    2009-01-01

    As an alternative to gravity footings or pile foundations, offshore wind turbines at shallow water can be placed on a bucket foundation. The present analysis concerns the development of consistent lumped-parameter models for this type of foundation. The aim is to formulate a computationally...... quality of the models are tested in the time and frequency domains. It is found that precise results are achieved by lumped-parameter models with two to four internal degrees of freedom per displacement or rotation of the foundation. Further, coupling between the horizontal sliding and rocking cannot be...

  4. Comparison of Calculation Models for Bucket Foundation in Sand

    DEFF Research Database (Denmark)

    Vaitkunaite, Evelina; Molina, Salvador Devant; Ibsen, Lars Bo

    The possibility of fast and rather precise preliminary offshore foundation design is desirable. The ultimate limit state of bucket foundation is investigated using three different geotechnical calculation tools: [Ibsen 2001] an analytical method, LimitState:GEO and Plaxis 3D. The study has focused...... on resultant bearing capacity of variously embedded foundation in sand. The 2D models, [Ibsen 2001] and LimitState:GEO can be used for the preliminary design because they are fast and result in a rather similar bearing capacity calculation compared with the finite element models of Plaxis 3D. The 2D...

  5. An Innovative Physical Model for Testing Bucket Foundations

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo; Andersen, Lars Vabbersgaard

    2012-01-01

    Monopod bucket foundations promise to become a reliable and cost-effective solution for offshore wind turbines. In this paper, six small scale tests of a steel bucket foundation subjected to quasi-static lateral load, are presented. When conducting small scale experiments on soil, scale effects can...... considerably affect the tests outcome. To overcome this issue, a novel testing system based on the application of suction between the soil surface and a membrane, is employed. By means of suction the effective stress of the soil is increased. The tests are conducted at stress levels of 0 (kPa), 10 (kPa), 15 (k......Pa), 20 (kPa), and 30 (kPa) respectively. The comparison between the tests conducted at stress level of 0 (kPa), and the tests with stress level increased, shows remarkable differences. The relationship between scaled overturning moment and rotation is well represented by a power law. The exponent of the...

  6. Effect of Embedment on the Vertical Bearing Capacity of Bucket Foundations in Clay

    DEFF Research Database (Denmark)

    Barari, Amin; Ibsen, Lars Bo

    2011-01-01

    To evaluate the undrained behaviour of bucket foundations installed on Yoldia clay, 100 tests on bucket foundations subject to vertical and moment loadings were conducted at Aalborg university geotechnical centre. Bucket foundations are tubular steel foundations that are installed by sealing the...... top and applying suction inside the bucket. The hydrostatic pressure difference and the deadweight cause the bucket to penetrate the soil. In the present study, results of an experimental study addressing the effect of embedment (skirt length to the diameter) on the undrained bearing capacity of...... bucket foundations under vertical loading are reported. The field tests have been accompanied by the finite element numerical simulations in order to provide better understanding of influential parameters on the behavior of bucket foundations....

  7. A Similitude Theory for Bucket Foundations Under Monotonic Horizontal Load in Dense Sand

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo

    2013-01-01

    This paper aims at finding force-displacement relationships to be employed in the design of bucket foundations for offshore wind turbine. This is accomplished by combining small-scale tests and element tests within a theoretical framework. A similitude theory, regarding the lateral displacement of...... bucket foundations under horizontal load, is put forward. A constitutive law of the soil and a load-displacement relationship for the bucket foundation are theoretically obtained. Triaxial tests of sand, and small-scale tests of bucket foundation, are respectively employed to corroborate the theory....... Attention is given to the different behaviour shown during the compressive and dilative phases of the soil. Some analogy between triaxial tests and tests of bucket foundation are pointed out. A theoretically derived power law is found capable to represent the dimensionless horizontal load...

  8. Modified Expression for the Failure Criterion of Bucket Foundations Subjected to Combined Loading

    DEFF Research Database (Denmark)

    Larsen, Kim André; Ibsen, Lars Bo; Barari, Amin

    2013-01-01

    Recently, various loading tests with small- and large-scale bucket foundations were performed on buckets of varying sizes, embedment ratios, and load paths with saturated dense Aalborg University Sand No. 1 at the geotechnical laboratory of Aalborg University. In the present study, the capacity and...... the present study. Therefore, a modified expression is proposed to describe the combined capacity as a function of the tensile capacity and the inclination factor....

  9. Buckling of Monopod Bucket Foundations – Influence of Boundary Conditions and Soil-structure Interaction

    DEFF Research Database (Denmark)

    Madsen, Søren; Pinna, Rodney; Randolph, M. F.;

    2015-01-01

    Using large monopod bucket foundations as an alternative to monopiles for offshore wind turbines offers the potential for large cost savings compared to typical piled foundations. In this paper, numerical simulations are carried out to assess the risk of structural buckling during installation of...... investigated. The effects of including soil restraint and soil–structure interaction on the buckling analysis are also addressed....

  10. Dynamic behaviour of mono bucket foundations subjected to combined transient loading

    DEFF Research Database (Denmark)

    Nielsen, Søren Dam; Ibsen, Lars Bo; Nielsen, Benjaminn Nordahl

    2015-01-01

    This article presents the results from small scale testing, investigating the effect of transient combined loading of a bucketfoundation. The tests are performed inside a pressure tank at Aalborg University, Denmark. The bucket foundation was installed in dense water saturated sand and transient...

  11. Physical Modelling of Bucket Foundation Under Long-Term Cyclic Lateral Loading

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo; Andersen, Lars Vabbersgaard;

    2012-01-01

    functioning. In this article a 1g physical model of bucket foundation under horizontal and moment cyclic loading is described. A testing program including four tests was carried out. Every test was conducted for at least 30000 cycles, each with different loading features. The capability of the model to...

  12. Cost-Effective Mass Production of Mono Bucket Foundations

    DEFF Research Database (Denmark)

    Nielsen, Søren A.; Ibsen, Lars Bo; Gres, Szymon

    Today, the basis for design and manufacturing of offshore foundations is inherited from oil and gas industry where the small repeatability in manufacturing is the case and the cost implications are different. The total opposite is the case when considering offshore Wind Turbine Generator...

  13. Small-Scale Testing of Laterally Loaded Bucket Foundations in Dense Sand

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Foglia, Aligi

    Monopod bucket foundations promise to become a reliable and cost-effective concept for offshore wind turbine. Physical models are essential to understand the behavior of soil-structure systems. When conducting small-scale experiments on soil, scale effects can considerably affect the tests outcome....... In a bid for overcoming this issue, a novel testing system based on the application of suction between the soil surface and a membrane is employed. The comparison between the tests conducted at stress levels of 0 kPa, and the tests with increased stress level, shows remarkable differences. In...... particular, the moment rotation curve of tests with pressure applied show more similar trend to large-scale tests. Further cyclic loading studies may be carried out adopting this testing system to investigate the accumulated rotation of bucket and monopile foundations....

  14. Soil-structure interaction of the Draupner E bucket foundation during storm conditions

    Energy Technology Data Exchange (ETDEWEB)

    Svanoe, G.; Eiksund, G.; Kavli, A.; Langoe, H.; Karunakaran, D. [SINTEF Civil and Environmental Engineering, Trondheim (Norway); Tjelta, T.I. [STATOIL, Stavanger (Norway)

    1997-12-31

    The Draupner E platform was installed in July 1994 in the central part of the North Sea. This is the first offshore platform founded on so called ``bucket foundations``, which is a gravity type of foundation consisting of a circular base plate equipped with skirts. The seabed at the site consists of very dense fine sand, and the foundation was designed to sustain true tension for a short period of time during the design wave. The platform is extensively instructed, and in this paper the foundation behaviour during a severe storm in January 1995 is analysed. Design assumptions regarding dynamic stiffness and pore pressure dissipation are verified, and mechanisms for pore pressure generation during storm conditions are studied. It is found that the generated excess pore pressure is related to redistribution of load bearing between skirts and base plate due to the action of wave loads. The resulting hydraulic gradients are well below critical, and no effects of stiffness degradation were seen. (author)

  15. Wave Forces on Transition Pieces for Bucket Foundations for Offshore Wind Turbines

    DEFF Research Database (Denmark)

    Nezhentseva, Anastasia; Andersen, Thomas Lykke; Andersen, Lars Vabbersgaard;

    Since offshore wind turbines continually increase in size and move to deep water depths (>25 m), significant wave loading becomes a major concern for their design. A monopile foundation is one of the most commonly used types of the offshore wind turbine foundations today. This solution, however......, becomes not very cost-effective in deep water depths. Therefore, it is essential to find some alternative economically efficient solutions. This paper presents an experimental study of wave loading on several shapes of transition pieces (TPs) used to transfer the loads from a 5 MW offshore wind turbine to...... a bucket foundation (suction caisson) located at 35 m water depth in the North Sea. Several models of the TPs (wedge-shaped steel flange-reinforced shear panels, conical and doubly curved with or without cutaways) are tested in a wave flume and compared with respect to wave loading. Due to a larger...

  16. Small-Scale Testing of Laterally Loaded Bucket Foundations in Dense Sand

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Foglia, Aligi

    2011-01-01

    Monopod bucket foundations promise to become a reliable and cost-effective option for offshore wind turbine. In this paper, six small-scale tests of a steel bucket foundation subjected to quasi-static lateral load, are When conducting small-scale experiments on soil, scale effects can considerably...... affect the tests outcome. To overcome this issue, a novel testing system based on the application of suction between the soil surface and a membrane, is employed. By means of the suction the effective stress of the soil is increased. The tests are conducted at stress levels of 0 kPa, 10 kPa, 15 kPa, 20 k......Pa, and 30 kPa respectively. The test results successfully prove reliability and consistency of the method. The comparison between the tests conducted at stress level of 0 kPa, and the tests with stress level increased, shows remarkable differences. In particular, the moment rotation curves of tests with...

  17. Damping Estimation of a Prototype Bucket Foundation for Offshore Wind Turbines Identified by Full Scale Testing

    DEFF Research Database (Denmark)

    Damgaard, Mads; Ibsen, Lars Bo; Andersen, Lars Vabbersgaard;

    2013-01-01

    -3.0 MW offshore wind turbine installed on a prototype bucket foundation. The foundation and the turbine tower are equipped with a monitoring system with 15 Kinemetrics force balance accelerometers and a Digitexx acquisition system. Using free vibration decays from “rotor-stop” tests and operational modal......Wave loading misaligned with wind turbulence often introduces large fatigue loads on offshore wind turbine structures. In this particular case, the structure is sensitive to resonant excitation acting out of the wind direction due to a small aerodynamic damping contribution in the cross......-wind direction. Therefore, in order to assess the fatigue damage accumulation during the lifetime of the offshore wind turbine structure, a correct estimation of the cross-wind modal damping is necessary. This paper describes the cross-wind modal damping of the lowest eigenmode of a fully operational Vestas V90...

  18. Modelling the drained response of bucket foundations for offshore wind turbines under general monotonic and cyclic loading

    DEFF Research Database (Denmark)

    Foglia, Aligi; Gottardi, Guido; Govoni, Laura;

    2015-01-01

    The response of bucket foundations on sand subjected to planar monotonic and cyclic loading is investigated in the paper. Thirteen monotonic and cyclic laboratory tests on a skirted footing model having a 0.3 m diameter and embedment ratio equal to 1 are presented. The loading regime reproduces the...

  19. Suction Buckets

    DEFF Research Database (Denmark)

    Feld, T.

    capable of simulating the change in size and shape of the failure locus in the H-M/D space, as revealed in the laboratory. An economic comparison between different foundation concepts is made. The advantages and disadvantages using bucket foundation are outlined. Concluding a design chart is proposed......, based on the performed numerical simulations, the analytical models and concepts like penetration resistance and critical suction. The employment of finite element calculations in the design of bucket foundation is evaluated and found necessary in the detailed design. However, introductory the...... determination of the bucket dimensions is enabled through the analytical model, even though it has a number of limitations and restrictions. The new foundation concept is considered both economically and environmentally attractive for certain locations....

  20. Air-Floating Towing Behaviors of Multi-Bucket Foundation Platform

    Institute of Scientific and Technical Information of China (English)

    乐丛欢; 丁红岩; 张浦阳

    2013-01-01

    Air-floating towing beha viors of multi-bucket foundation plat form (MBFP) are investigated with the 1/20-scale model tests and hydrodynamic so ftware MOSES. MOSES numerical model was val idated by test results, and M OSES prototype model of MBFP can eliminate scale effect of model. The influences of towing factors of to wing speed, water depth, freeboard, and w ave direction on air-floating tow ing stability of MBFP were analyzed by model tests and validated MOSES prototype mod el. It is sho wn that the re duction of towing sp eed can effectively d ecrease the to wing force and surge acceleration to improve towing stability. Water depth is another f actor in towing s tability. Obvious shallow water effect will appear in shallow water with sma ll water depth-draft ratio and it w ill disappear gradually and air-floating towing becomes more stable with the increase of water depth. Accelerations of surge, s way and heave are small and they have modest changes when freeboard increases from 0.5 to 2 m. For MBFP, the freeboard is not suggested to be larger than 2 m in following wave. Wave direction has large influence on the towing stability, the surge acceleration and towing force are sensitive to the va riation of wave direction, the surge acceleration and towing force in following wave (0°) and counter wave (180°) are much larger than that in transverse sea (90°and 270°).

  1. Bucket Group Effect of the Composite Multi-bucket Structure

    Institute of Scientific and Technical Information of China (English)

    Shucheng Jin; Yanhua Yang; Yongtao Zhang

    2014-01-01

    As a novel type of foundation in beach and shallow sea, the bucket structure is especially suitable for complex conditions such as soft clay ground and the worse types of sea environments. In this paper, the bearing capacity of a multi-bucket structure is studied by experiments with a single bucket and four-bucket foundation in a saturated sand layer. Based on the experimental data and numerical analysis results, the bearing capacity behavior and the bucket group effect are compared and analyzed. Furthermore, some influential factors, such as the soil type, the ratio of length to diameter L/D, the ratio of the bucket spacing to the bucket diameter S/D, and the bucket number are introduced and their effects on the multi-bucket structural capacity are investigated. The vertical static capacity adjustment factor is introduced to evaluate the bucket group effects of the multi-bucket foundation.

  2. Estimation of Heights of Soil Plug Inside Bucket Foundations During Suction Penetration by Deformable Discrete Element Modeling

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The soil plug phenomenon involving the rising of the surface soil inside the bucket chamber under the suction pressure and seepage forces was simulated and calculated by deformable discrete element method (DDEM) models. The seepage forces, the effective gravity of soil, the friction on the chamber wall and the suction inside the chamber are considered as the main external forces of DDEM specimen. Three typical types of soil (silty clay, silt and sand) in the Bohai Sea are set as the main environmental conditions in the formation process of soil plug. It is found that the heights of soil plug simulated by DDEM models are 161.85 mm in silty clay, 125.22 mm in silt and 167.56 mm in sand, which are close to model test results and higher than those estimated by discrete element method (DEM). DDEM is an effective method to estimate and predict the heights of soil plug before suction penetration of bucket foundations on site.

  3. Observations on bucket foundations under cyclic loading in dense saturated sand

    DEFF Research Database (Denmark)

    Foglia, Aligi; Ibsen, Lars Bo; Nicolai, Giulio; Andersen, Lars Vabbersgaard

    -term cyclic response of this foundation is not fully understood. In this article, a single gravity physical model is described, an experimental campaign is presented and the observed results are discussed. The aim of the study is to explore the general pattern of response of the foundation under cyclic...

  4. Material Composition of Bucket Foundation Transition Piece for Offshore Wind Turbines

    DEFF Research Database (Denmark)

    Nezhentseva, Anastasia; Andersen, Lars; Ibsen, Lars Bo;

    2010-01-01

    In Denmark, production of renewable energy is focused on offshore wind turbines, since they make little if any inconvenience for residents in inhabited areas. High requirements are placed on the installation of the foundations which can cost about 30% of the total cost of the wind turbine. This...... practice is limited to the use of steel-flange-reinforced shear panels for the transition piece—a production that requires extensive welding work—a desirable solution is to find a material that provides lower cost and easier manufacturing without compromising the strength and stiffness. The paper compares...... the structural behaviour of a transition piece made of steel (reference case), compact reinforced composite (CRC) and composite shell elements made of CRC glued to steel sheets. A finite-element model is developed in ABAQUS. Three material models are checked for buckling and material failure in the...

  5. Bucket elevator

    OpenAIRE

    Sklenář, Adam

    2016-01-01

    The aim of this thesis is a design of a vertical bucket elevator which is to be used to transport cereal. The transport height is nineteen meters and transport capacity one hundred tons per hour. This thesis consists of a description of the vertical bucket elevator and its main parts which are mentioned in the introductory list. The thesis deals with functional and capacitive calculations, determining a drive and a tensioning device. Another calculation has the function of control a drive sha...

  6. Foundation Structure

    DEFF Research Database (Denmark)

    2009-01-01

    Method of installing a bucket foundation structure comprising one, two, three or more skirts, into soils in a controlled manner. The method comprises two stages: a first stage being a design phase and the second stage being an installation phase. In the first stage, design parameters are determined...... relating to the loads on the finished foundation structure; soil profile on the location; allowable installation tolerances, which parameters are used to estimate the minimum diameter and length of the skirts of the bucket. The bucket size is used to simulate load situations and penetration into foundation...

  7. Wave- induced seabed dynamic response around composite bucket foundation%复合筒型基础周围土体在波浪作用下的动力响应

    Institute of Scientific and Technical Information of China (English)

    于聪; 张金凤; 张庆河

    2015-01-01

    Based on OpenFOAM, we simulated numerical wave flume, offered wave pressure of seabed around the composite bucket foundation as initial conditions for ABAQUS, and established an integrated model of wave-induced seabed dynamic re-sponse. The numerical results are in good agreement with experimental data and analytical results. Dynamic response around composite bucket foundation under progressing wave condition is analyzed and the effects of soil properties on the dynamic response are investigated by the model. The results show that attenuation velocity of pore water pressure increases with the increasing of seabed permeability coefficient and elastic modulus.%利用OpenFOAM模拟数值波浪水槽,将复合筒型基础周围海床受到的波压力作为初始条件输入有限元软件ABAQUS,建立波浪作用下海床动力响应模型。数值模拟结果与实验结果及解析解吻合较好。运用此模型进行了复合筒型基础周围海床在行进波作用下动力响应研究和土体特性对波浪作用下海床动力响应的影响分析,结果表明,海床孔隙水压衰减速度随着海床渗透系数和弹性模量的增加而增大。

  8. Level Classifications of Foundation Stiffness

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo; Liingaard, Morten

    2007-01-01

    This article describes a foundation module developed and implemented in both HAWC and FLEX capable of to simulate the frequency dependent stiffness and damping of foundations e.g. pile, gravitation and bucket foundations....

  9. 近海风电筒型基础风机结构地震动力响应分析%Analysis on seismic dynamic response of structure for offshore wind turbine with bucket foundation

    Institute of Scientific and Technical Information of China (English)

    戚蓝; 刘国威; 王海军

    2012-01-01

    In order to research the seismic dynamic response of the structure for ogshore wind turbine with bucket foundation, the sail-structure interaction(SSI) is considered with the equivalent linear dynamic constitutive model that can reflect the non-linearity and hysteresis of soil on the basis of the subroutine UMAT provided by ABAQUS, and then a finite element and infinite element coupling model for analysis on the rotor blade, tower, bucket foundation and soil is established for a domestic offshore wind power generation system; furthermore, the dynamic response analysis is made with the lime domain analysis based on i static analysis. The study shows that the natural frequency of the structure can be reduced by SSi eSect Lnder the seismic dynamic effect, the maximum horizontal acceleration response gf the tower structure of the wind turbine occurs near 1/3 height of it, while the vertical acceleration response keeps increasing all along the tower height and its amplification effect is stronger than that of the horizontal one.%为研究近海风电筒型基础风机结构的地震动力响应,基于ABAQUS软件的UMAT平台嵌入了能够反映土体非线性与滞后性的等效线性动本构模型,考虑土—结构相互作用( soil-structure interaction,SSI),针对国内某近海风力发电系统构建“桨叶—塔架—筒型基础—土体”的有限元—无限元耦合分析模型,在静力分析的基础上采用时域分析法对其进行动力响应分析.研究表明,SSI效应会降低结构的自振频率;在地震动作用下,该风机高塔结构水平向加速度响应在塔架2/3高度附近处最大,竖向加速度响应则沿塔架高程一直增大,且其放大效应强于水平向.

  10. Impact of Mooring Asparagus Angle on Towing of Ocean Platform with Bucket Foundation%系缆龙须角对筒型基础拖航影响试验

    Institute of Scientific and Technical Information of China (English)

    刘宪庆; 杨子慧; 丁红岩; 辜文杰

    2014-01-01

    系缆龙须角是影响气浮筒型基础拖航的主要因素之一。通过模型试验对顺浪拖航时结构在横向、纵向以及垂向振荡的加速度、筒内气压力和水压力以及拖缆力进行测量。试验结果表明:拖航加速度随着系缆龙须角从0°增大到90°呈先减小后增大的趋势;龙须角为0°时,拖航的加速度、筒内气压力和水压力以及拖缆力变化均明显大于有角度拖航;拖缆力呈脉冲变化,且在45°时取得较小值。因此对于该结构的拖航,为了保证在拖航中既具有较小的拖缆力,又具有较小的横向和垂向振荡,建议选取系缆龙须角为45°。%The mooring asparagus angle is one of the main factors which affect the towing of air-floating bucket foundations. The accelerations of longitudinal, lateral, vertical acceleration, the internal air pressure and water pressure of the bucket and the tension of towing are determined by towing in following wave through model test. The test results show that the accelerations increase firstly, and then decrease with the increase of mooring asparagus angle from zero degree to 90 degree;when the asparagus angle is zero degree, the change of acceleration, internal air pressure, water pressure and the change of the asparagus force are significantly larger than the asparagus angle is not zero;The mooring force changes with pulse and is relatively smaller at 45 degree angle;in order to obtain the smaller tension and vibration in towing, the selected mooring asparagus angles of this platform is 45 degree.

  11. Centrifugal bucket hoist

    OpenAIRE

    Kotačka, Petr

    2014-01-01

    This bachelor thesis deals with an engineering design of a centrifugal bucket elevator with transport height 6.5 metres and transport performance 40 000 kilograms per hour. The thesis focuses especially on a functional calculation of the elevator thanks to which a gear motor, band and bucket are chosen. This is followed by an analysis of a constructional solution with a strength check of a drive shaft and parallel keys as well as a calculation of a service life of bearings. Technical document...

  12. Buckets of power

    Energy Technology Data Exchange (ETDEWEB)

    Heeg, A.; Sosna, P.; Gnilke, M. [FAG Kugelfischer AG & Co. (Germany)

    2005-08-01

    The paper outlines the use of rolling bearing supports in high power bucket wheel gearboxes developed by MAN-TAKRAF and FAG. The shaft system of the gearbox was modelled using the Bearinx{reg_sign} bearing calculation program. 2 refs., 7 figs.

  13. Buckling of Bucket Foundations During Installation

    DEFF Research Database (Denmark)

    Madsen, Søren

    There is a great politically will to expand the green energy market in these times. A proven green technology is wind turbines. Wind turbines have been installed in great numbers on land over the last decades. However, the current development in wind turbine design leads to larger turbine sizes i...... imperfect geometry is, • The multi-shell cross section is just as sensitive to imperfections as a circular cylinder, • The new multi-shell design provides a significantly larger (75%) buckling load compared to the traditional design....... during penetration, • Considering the first mode shape from a linear buckling analysis as imperfect geometry in a nonlinear buckling analysis is not sufficient for capturing the buckling incident in Wilhelmshaven; however, considering the first 21 mode shapes and introducing themost critical one as an...

  14. Waves in Newton's bucket

    OpenAIRE

    Mougel, Jérôme; Fabre, David; Lacaze, Laurent

    2015-01-01

    The motion of a liquid in an open cylindrical tank rotating at a constant rate around its vertical axis of symmetry, a configuration called Newton’s bucket, is investigated using a linear stability approach. This flow is shown to be affected by several families of waves, all weakly damped by viscosity. The wave families encountered correspond to: surface waves which can be driven either by gravity or centrifugal acceleration, inertial waves due to Coriolis acceleration which are singular in t...

  15. Comparison of design methods for axially loaded buckets in sand

    DEFF Research Database (Denmark)

    Vaitkunaite, Evelina; Nielsen, Benjaminn Nordahl; Ibsen, Lars Bo

    A study of the present knowledge about the bucket resistance for axial loading was performed considering analytical and numerical design methods as well as physical models. A case study was performed with two bucket foundations of equal diameter, but different skirt lengths installed in dense sand....... Itwas found that bearing capacity from the surcharge increases approximately twice if the foundation skirt is two times longer. However, the predicted compressive soil capacity can differ by 3.6 times depending on the chosen bearing capacity parameters. Few methods are available for the estimation of...

  16. Concept Study of Foundation Systems for Wave Energy Converters

    DEFF Research Database (Denmark)

    Molina, Salvador Devant; Vaitkunaite, Evelina; Ibsen, Lars Bo

    Analysis of possible foundation solution for Wave Energy Converters (WEC) is presented by investigating and optimizing novel foundation systems recently developed for offshore wind turbines. Gravity based, pile and bucket foundations are innovative foundation systems that are analyzed. Concept...

  17. Recycler barrier RF buckets

    Energy Technology Data Exchange (ETDEWEB)

    Bhat, C.M.; /Fermilab

    2011-03-01

    The Recycler Ring at Fermilab uses a barrier rf systems for all of its rf manipulations. In this paper, I will give an overview of historical perspective on barrier rf system, the longitudinal beam dynamics issues, aspects of rf linearization to produce long flat bunches and methods used for emittance measurements of the beam in the RR barrier rf buckets. Current rf manipulation schemes used for antiproton beam stacking and longitudinal momentum mining of the RR beam for the Tevatron collider operation are explained along with their importance in spectacular success of the Tevatron luminosity performance.

  18. Recycler barrier RF buckets

    CERN Document Server

    Bhat, C M

    2012-01-01

    The Recycler Ring at Fermilab uses a barrier rf system for all of its rf manipulations. In this paper, I will give an overview of historical perspective on barrier rf systems, the longitudinal beam dynamics issues, aspects of rf linearization to produce long flat bunches and methods used for emittance measurements of the beam in the RR barrier rf buckets. Current rf manipulation schemes used for antiproton beam stacking and longitudinal momentum mining of the RR beam for the Tevatron collider operation are explained along with their importance in spectacular success of the Tevatron luminosity performance.

  19. Foundations

    Science.gov (United States)

    Harteveld, Casper

    A building will more likely collapse if it does not have any proper foundations. Similarly, the design philosophy of Triadic Game Design (TGD) needs to reside on solid building blocks, otherwise the concept will collapse as well. In this level I will elaborate on these building blocks. First I will explain what the general idea of TGD is. It is a design philosophy, for sure, but one which stresses that an “optimum” needs to be found in a design space constituted by three different worlds: Reality, Meaning, and Play. Additionally, these worlds need to be considered simultaneously and be treated equally. The latter requires balancing the worlds which may result in different tensions, within and between two or three of the worlds. I continue by discussing each of the worlds and showing their perspective on the field of games with a meaningful purpose. From this, we clearly see that it is feasible to think of each world and that the idea makes sense. I substantiate this further by relating the notion of player and similar approaches to this framework. This level is quite a tough pill to swallow yet essential for finishing the other levels. Do not cheat or simply skip this level, but just take a big cup of coffee or tea and start reading it.

  20. Second Stage Turbine Bucket Airfoil.

    Science.gov (United States)

    Xu, Liming; Ahmadi, Majid; Humanchuk, David John; Moretto, Nicholas; Delehanty, Richard Edward

    2003-05-06

    The second-stage buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at the radially innermost aerodynamic section of the airfoil and X and Y are coordinate values defining the airfoil profile at each distance Z. The X, Y and Z values may be scaled as a function of the same constant or number to provide a scaled-up or scaled-down airfoil section for the bucket.

  1. Buckets of Higgs and tops

    Energy Technology Data Exchange (ETDEWEB)

    Buckley, Matthew R. [Center for Particle Astrophysics, Fermi National Accelerator Laboratory,Batavia, IL (United States); Department of Physics and Astronomy, Rutgers University,Piscataway, NJ (United States); Plehn, Tilman; Schell, Torben [Institut für Theoretische Physik, Universität Heidelberg,Heidelberg (Germany); Takeuchi, Michihisa [Theoretical Particle Physics and Cosmology Group, Department of Physics,King’s College London, London WC2R 2LS (United Kingdom)

    2014-02-28

    We show that associated production of a Higgs with a top pair can be observed in purely hadronic decays. Reconstructing the top quarks in the form of jet buckets allows us to control QCD backgrounds as well as signal combinatorics. The background can be measured from side bands in the reconstructed Higgs mass. We back up our claims with a detailed study of the QCD event simulation, both for the signal and for the backgrounds.

  2. Holey buckets! Monitoring plot-scale runoff

    Science.gov (United States)

    Rupp, D. E.; Stewart, R. D.; Abou Najm, M. R.; Selker, J. S.; Selker, F.; Van De Giesen, N.

    2011-12-01

    Measurement of plot-scale surface runoff is commonly achieved by diverting flow through a flume or tipping bucket system, or into a storage tank, such as bucket. The principle advantages of the "bucket method" are relative simplicity and low cost. The principle drawback is that the bucket requires frequent emptying during heavy runoff, unless the bucket volume is very large. As a solution to the problem of emptying the bucket while still retaining the properties of simplicity and economy, we used a holey bucket. Our "bucket" is vertical 4"-diameter ABS pipe, sealed at the bottom, and with holes along the side of the pipe. A screen in the pipe catches debris that could block the holes. The holes' diameters and locations were chosen to capture both low (100 L min-1) flows. Runoff is diverted into the top of the pipe. The runoff rate is determined from the water level and the rate of change in water level: the water level gives the flow rate out of the submerged holes (using Torricelli's Law) and the change in water level gives the rate of change in storage in the pipe. The runoff is calculated as the sum of the hole discharge and the rate of change in storage. A calibration parameter is applied to account for departures from assumptions of the theory. The design is currently being utilized to monitor runoff from experimental plots on a rural hillslope in Chile.

  3. Conceptual description of the design of bucket elevator

    OpenAIRE

    Růčka, Martin

    2012-01-01

    The topic of this bachelor work is to describe the design process bucket elevator. Work is processed as study material for students of bachelor study. The first part is a basic description of the bucket elevator and its types. Furthermore, the description of the basic parts of the bucket elevator. The second part contains equations for bucket elevator design (design drawing element, buckets, engine). Are given two ways to resolve according to [1, 2] and the conclusion of this work is presente...

  4. On-land and offshore testing of a new helicopter bucket for dispersant application - response 3000D

    International Nuclear Information System (INIS)

    Development of a new helicopter bucket for dispersant applications to serve the dispersant spraying needs of Norwegian oil companies was described. Testing two existing helicopter buckets and practical experience with firefighting helicopter operations provided the foundations for this developmental experiment, combined with the dispersant applications experience of SINTEF. The newly designed bucket, 3000D, has two dispersant spray systems (high and low flow rates) and a large capacity ( three cu m). It is capable of direct filling of dispersant via a suction hose while the helicopter is hovering and is equipped for remote control of all functions. It is robustly designed for use under harsh offshore conditions in the North Sea. The bucket has been subjected to extensive testing on land and offshore with experimental oil slicks. The results were fully satisfactory. 9 refs., 1 tab., 13 figs

  5. Fixing the Hole in My Bucket

    Science.gov (United States)

    Nitkewicz, Edward J.

    2011-01-01

    Like many people, the author has spent the better part of his life fashioning a list of places he wanted to go and things he wanted to do. Because he is a typical American male, his "Bucket List" is mostly populated by sporting venues he wants to visit and sporting events he wants to witness. Sharing his "Bucket List" with his son would be a gift…

  6. Bucket transport of energetic ions in tokamaks

    International Nuclear Information System (INIS)

    The so-called “bucket transport” of energetic ions — the spatial mixing of these ions due to spatial displacement of resonances — is studied with special attention to quasi-steady-state magnetic perturbations. A Hamiltonian formalism suitable to the case when the resonance displacement results from the collisional slowing down of the particles and the temporal evolution of the safety factor profile is suggested. The energy flux produced due to the bucket transport is shown to be considerable in configurations with low shear. It is shown that the bucket transport flux associated with magnetic islands tends to be localized at some distance from the islands. The bucket transport caused by perturbations with non-zero frequencies is also discussed. - Highlights: • The bucket transport of energetic ions is the spatial mixing due to spatial displacements of resonances. • The bucket transport may be of importance when the magnetic shear is small. • The particle and energy fluxes are located apart from the magnetic islands causing the transport. • The transport due to non-zero-frequency perturbations is less sensitive to the shear and may contribute to ash removal

  7. Bucket transport of energetic ions in tokamaks

    Energy Technology Data Exchange (ETDEWEB)

    Yakovenko, Yu.V., E-mail: yakovenko@kinr.kiev.ua [Institute for Nuclear Research, Prospekt Nauky 47, Kyiv 03680 (Ukraine); National University of Kyiv Mohyla Academy, Vul. Skovorody 2, Kyiv 04070 (Ukraine); Burdo, O.S.; Kolesnichenko, Ya.I.; Tyshchenko, M.H. [Institute for Nuclear Research, Prospekt Nauky 47, Kyiv 03680 (Ukraine)

    2015-09-25

    The so-called “bucket transport” of energetic ions — the spatial mixing of these ions due to spatial displacement of resonances — is studied with special attention to quasi-steady-state magnetic perturbations. A Hamiltonian formalism suitable to the case when the resonance displacement results from the collisional slowing down of the particles and the temporal evolution of the safety factor profile is suggested. The energy flux produced due to the bucket transport is shown to be considerable in configurations with low shear. It is shown that the bucket transport flux associated with magnetic islands tends to be localized at some distance from the islands. The bucket transport caused by perturbations with non-zero frequencies is also discussed. - Highlights: • The bucket transport of energetic ions is the spatial mixing due to spatial displacements of resonances. • The bucket transport may be of importance when the magnetic shear is small. • The particle and energy fluxes are located apart from the magnetic islands causing the transport. • The transport due to non-zero-frequency perturbations is less sensitive to the shear and may contribute to ash removal.

  8. Buckets: Smart Objects for Digital Libraries

    Science.gov (United States)

    Nelson, Michael L.

    2001-01-01

    Current discussion of digital libraries (DLs) is often dominated by the merits of the respective storage, search and retrieval functionality of archives, repositories, search engines, search interfaces and database systems. While these technologies are necessary for information management, the information content is more important than the systems used for its storage and retrieval. Digital information should have the same long-term survivability prospects as traditional hardcopy information and should be protected to the extent possible from evolving search engine technologies and vendor vagaries in database management systems. Information content and information retrieval systems should progress on independent paths and make limited assumptions about the status or capabilities of the other. Digital information can achieve independence from archives and DL systems through the use of buckets. Buckets are an aggregative, intelligent construct for publishing in DLs. Buckets allow the decoupling of information content from information storage and retrieval. Buckets exist within the Smart Objects and Dumb Archives model for DLs in that many of the functionalities and responsibilities traditionally associated with archives are pushed down (making the archives dumber) into the buckets (making them smarter). Some of the responsibilities imbued to buckets are the enforcement of their terms and conditions, and maintenance and display of their contents.

  9. Implementation of a new Foundations Concept for Offshore Wind Farms

    DEFF Research Database (Denmark)

    Ibsen, Lars Bo

    The foundation principles for the recent major offshore wind farm projects in Europe have been dominated by two types of foundation solutions, the gravitational foundation and the monopile. A fully operational 3.0 MW offshore wind turbine was installed on a prototype of the bucket foundation at the...... test field in Frederikshavn in December 2002. A five-year research and development project has proven the bucket foundation to be feasible in suitable soil conditions in water depth from near shore to approximately 40 meters. The bucket foundation design reduces the steel weight by half compared with a...... to maintain an approval procedure in future projects. In order to develop these design procedure relevant studies involving techniques as diverse as laboratory model testing, field trials at reduced scale, and a full-scale field installation, has been performed. The nature of these tests is outlined...

  10. Second-stage turbine bucket airfoil

    Science.gov (United States)

    Wang, John Zhiqiang; By, Robert Romany; Sims, Calvin L.; Hyde, Susan Marie

    2002-01-01

    The second-stage buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at the radially innermost aerodynamic section of the airfoil and X and Y are coordinate values defining the airfoil profile at each distance Z. The X and Y values may be scaled as a function of the same constant or number to provide a scaled-up or scaled-down airfoil section for the bucket. The second-stage wheel has sixty buckets.

  11. Bucket wheel excavators for varying mining conditions

    Energy Technology Data Exchange (ETDEWEB)

    Schachtschneider, H.; Seliger, E.

    1987-06-01

    TAKRAF bucket wheel excavators have proven their efficiency through the achievement of daily production rates in excess of 300,000 bcm, and have accomplished this under the most difficult geological and climatic conditions. Even heavy, plastic, very sticky clays, very abrasive soils, and rocky partings have been successfully mined with bucket wheel excavators. The use of BWEs to mine the hard coal deposits at the Ekibastus surface mine in the U.S.S.R., has broadened the field of application of these machines. Based on the experience gained in heavy-duty service, the bucket wheel excavators designed in the future will be capable of successfully coping with even more difficult site conditions.

  12. MPED: An ISRU Bucket Ladder Excavator Demonstrator System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Abstract: The Multi-Purpose Excavation Demonstrator (MPED) is a commercial effort and a third generation of technology, following Bucket Wheel Excavator and Bucket...

  13. Design and Analysis of Rotating Bucket Arm of Excavator

    Directory of Open Access Journals (Sweden)

    Bikash Rai

    2013-12-01

    Full Text Available In this paper an attempt has been made to design and analyze the rotating bucket of the excavator along with the stick and the bucket arm. This paper focuses on the joint design by using the geared motor for angular rotation of the bucket arm and studies the effect of digging, torsional force and bending stresses developed on the joint. Study the motion of the bucket arm

  14. Bucket wheel excavators: variable mining equipment in the focus

    Energy Technology Data Exchange (ETDEWEB)

    Nies, G.; Jurisch, H. (Schwermaschinenbau Lauchhammerwerk AG, Lauchhammer (Germany). TAKRAF Tagebautechnik)

    1992-01-01

    Specifications and performance parameters of different types of bucket wheel excavators are given. Factors discussed include: bucket wheel power requirement, discharge of the bucket wheel boom, structure of the digging unit, variations in the loading units, and adaptation of the crawler vehicle. 15 figs., 4 refs.

  15. Bucket shaking stops bunch dancing in Tevatron

    CERN Document Server

    Burov, A

    2012-01-01

    Bunches in Tevatron are known to be longitudinally unstable: their collective oscillations, also called "dancing bunches," persist without any signs of decay. Typically, a damper is used to stop these oscillations, but recently, it was theoretically predicted that the oscillations can be stabilized by means of small bucket shaking. Dedicated measurements in Tevatron have shown that this method does stop the dancing.

  16. Third-stage turbine bucket airfoil

    Science.gov (United States)

    Pirolla, Peter Paul; Siden, Gunnar Leif; Humanchuk, David John; Brassfield, Steven Robert; Wilson, Paul Stuart

    2002-01-01

    The third-stage buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at the radially innermost aerodynamic section of the airfoil and X and Y are coordinates defining the airfoil profile at each distance Z. The X, Y and Z values may be scaled as a function of the same constant or number to provide a scaled-up or scaled-down airfoil section for the bucket.

  17. Bucket wheel excavators VABE 550 in China

    Energy Technology Data Exchange (ETDEWEB)

    In June 1989, China National Machinery Import and Export Corporation (CNM Corp.) and Voest-Alpine Bergtechnik (VA-Bergteknik) signed a contract for the engineering and delivery of 3 bucket wheel excavators type VABE 550 to be used in a large open pit brown coal mine in Yunnan Province, P.R. China. This article provides technical data relating to the excavators and discusses the results of a performance test conducted after completion of erection and commissioning. 2 photos.

  18. BEEM : Bucket Elimination with External Memory

    CERN Document Server

    Kask, Kalev; Gelfand, Andrew E

    2012-01-01

    A major limitation of exact inference algo- rithms for probabilistic graphical models is their extensive memory usage, which often puts real-world problems out of their reach. In this paper we show how we can extend in- ference algorithms, particularly Bucket Elim- ination, a special case of cluster (join) tree de- composition, to utilize disk memory. We pro- vide the underlying ideas and show promis- ing empirical results of exactly solving large problems not solvable before.

  19. Buckets: Aggregative, Intelligent Agents for Publishing

    Science.gov (United States)

    Nelson, Michael L.; Maly, Kurt; Shen, Stewart N. T.; Zubair, Mohammad

    1998-01-01

    Buckets are an aggregative, intelligent construct for publishing in digital libraries. The goal of research projects is to produce information. This information is often instantiated in several forms, differentiated by semantic types (report, software, video, datasets, etc.). A given semantic type can be further differentiated by syntactic representations as well (PostScript version, PDF version, Word version, etc.). Although the information was created together and subtle relationships can exist between them, different semantic instantiations are generally segregated along currently obsolete media boundaries. Reports are placed in report archives, software might go into a software archive, but most of the data and supporting materials are likely to be kept in informal personal archives or discarded altogether. Buckets provide an archive-independent container construct in which all related semantic and syntactic data types and objects can be logically grouped together, archived, and manipulated as a single object. Furthermore, buckets are active archival objects and can communicate with each other, people, or arbitrary network services.

  20. Examination of the causes of a bucket wheel fracture in a bucket wheel excavator

    Energy Technology Data Exchange (ETDEWEB)

    Rusinski, E.; Harnatkiewicz, P.; Kowalczyk, M.; Moczko, P. [Wroclaw University of Technology, Wroclaw (Poland). Faculty of Mechanical Engineering

    2010-09-15

    A bucket wheel excavator failure occurred in a brown-coal mine. The failure was caused by a fractured shaft of the bucket wheel. An attempt to determine the causes of the bucket wheel shaft fracture has been made. To that end, the character of changing loads and their maximum amplitudes has been determined by performing measurements on the excavator. A discreet model of the shaft was built and a numerical simulation of the shaft operation using the FEM method was achieved. An analysis of the materials in the fracture area was also implemented. Macroscopic and microscopic images of the fracture area are provided. The shaft fracture was mainly caused by a non-metallic inclusion located below the surface of the shaft as a result of its being rolled. Moreover, it was discovered that the shaft had not been heat-treated.

  1. Bucket-by-bucket on-axis/off-axis injection by fast kicker with variable position dependence of kick

    International Nuclear Information System (INIS)

    The bucket-by-bucket on-axis/off-axis injection system is proposed with new stripline fast kicker with variable position dependence of kick, from dipole to quadrupole, controlled by the drive voltage and its polarity. Applying the injection system to on-axis injection necessary for ultimate storage rings with narrow dynamic aperture, every bucket can be stored to achieve high average current with top-up operation. Also the minimum perturbation for stored beam can be achieved with the system by limiting the perturbations to injected bucket. Also the impurity electrons are prevented from injection with this system. (author)

  2. Progress in SLIP stacking and barrier bucket

    International Nuclear Information System (INIS)

    The slip stacking for pbar production has been operational in the Main Injector(MI) since December 2004 and has increased the beam intensity on the pbar target by more than 60%. We plan to use slip stacking for the NuMI neutrino experiment to effectively increasing the beam intensity to NuMI target by about a factor two in a MI cycle. In parallel with slip stacking, we plan to study fast momentum stacking using barrier buckets. One barrier rf system has been installed and tested, and a second system is being installed during the current shutdown. (author)

  3. Microwave instability in α-like quasi-isochronous buckets

    International Nuclear Information System (INIS)

    The problem of microwave instability inside an α-like quasi- isochronous bucket is addressed. The coupling impedance at wavelengths shorter than the length of the short bunches is found to be not small. The Keil-Schnell criterion is modified for such a bucket using the concept of self-bunching. The mechanism of particle loss during a microwave growth is examined

  4. Use of buckets as tools by Western lowland gorillas.

    Science.gov (United States)

    Margulis, Susan W; Steele, Gary R; Kleinfelder, Raymond E

    2012-01-01

    While all great apes have been documented to use tools, gorillas are arguably the least proficient tool users. In 2009, a Western lowland gorilla (Gorilla gorilla gorilla) at the Buffalo Zoo was observed using a bucket, which had been provided as part of normal enrichment, as a tool to collect water. We conducted a brief, ad libitum investigation to confirm the validity of the initial observation. We then carried out a systematic investigation of the behavior in 2010. We collected 72 hr of videotaped data and tested the null hypothesis that the gorillas did not differ in their prevalence of engaging in bucket-use behaviors. We documented that all four adult gorillas in the group used buckets as drinking tools; however, there was significant individual variation in frequency and type of use of buckets. Four of the eight behaviors showed significant variation among individuals. The silverback male and the youngest adult female contacted and held the bucket significantly more than the remaining two adult females. The young female carried and drank from the bucket significantly more than any other individual. Furthermore, she was observed to fill the bucket with water four of the six times during which this behavior was observed. These data provide evidence of the ability of gorillas to utilize tools, given the appropriate environmental conditions. We continue to explore the abilities of gorillas to recognize the functionality of buckets as tools. PMID:22290615

  5. Airfoil shape for a turbine bucket

    Science.gov (United States)

    Hyde, Susan Marie; By, Robert Romany; Tressler, Judd Dodge; Schaeffer, Jon Conrad; Sims, Calvin Levy

    2005-06-28

    Third stage turbine buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth Table I wherein X and Y values are in inches and the Z values are non-dimensional values from 0 to 0.938 convertible to Z distances in inches by multiplying the Z values by the height of the airfoil in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape. The X and Y distances may be scalable as a function of the same constant or number to provide a scaled up or scaled down airfoil section for the bucket. The nominal airfoil given by the X, Y and Z distances lies within an envelop of .+-.0.150 inches in directions normal to the surface of the airfoil.

  6. Laboratory Setup for Vertically Loaded Suction Caisson Foundation in Sand and Validation of Responses

    DEFF Research Database (Denmark)

    Manzotti, E.; Vaitkunaite, Evelina; Ibsen, Lars Bo

    devices usually installed in farms, therefore many inexpensive foundations are needed. Suction Bucket foundations are a suitable option for this purpose, but for large scale utilization more research is required, especially for in-service performance. Size of offshore wind turbine has been increasing...... during the last years and, following this trend, design choice will turn into foundation composed of three or four suction bucket foundations, called respectively tripod and tetrapod. Overturning moment in tripod and tetrapod is carried by vertical loading; therefore vertical pull-out capacity is tested...... depth of vertical stress, depending if the case of application is installation or pull-out....

  7. Magnetic resonance imaging of meniscal bucket-handle tears

    International Nuclear Information System (INIS)

    To define MR signs of meniscal bucket-handle tears and evaluate the diagnostic efficiency of this technique. Retrospective study of 30 patients with a meniscal bucket-handle tear and 30 with a different type of tear, all proven by arthroscopy. The following MR signs of a bucket-handle tear were evaluated: 'separate meniscal fragment, 'double posterior cruciate ligament', 'snake sign' and 'double anterior horn'. A correct diagnosis of a bucket-handle tear was only made in 18/30 of patients. Several of the MR signs were seen in the same patient in 17 cases. A double posterior cruciate ligament was present only in cases of medial meniscus tears. The 12 menisci without these signs, and therefore not diagnosed as bucket-handle tears, were all classified as meniscal tears on the basis of signal extending to the meniscal surface. Nine of these were not displaced into the inter-condylar notch at arthroscopy. The interobserver agreement was excellent: kappa 0.88. The diagnosis of a bucket-handle meniscal tear, if it is displaced, can be made when one or more of the four MR evaluated signs are present. Other forms of meniscal tears are only exceptionally diagnosed as bucket-handle tears. (authors)

  8. Barrier bucket method in cyclic accelerators

    International Nuclear Information System (INIS)

    The paper describes the main principles of the Barrier Bucket Method of charge particles stacking and acceleration in proton synchrotrons. The consideration is done with two models of 'rectangular barriers' and 'quasi-sinusoidal' ones using different approaches to analysis of particle motion. The first of them - so-called 'step by step approach', allows us to give a very clear physical explanation of the method and obtain easily the main characteristics of the method in analytical form. However, that is not always an efficient way. Therefore, the general case of the 'barriers' of an arbitrary form is considered as well and differential equations of particle phase motion are derived. This approach gives ample opportunities for analysis and numerical simulations of different phase dynamics regimes of particles in cyclic accelerators. Numerical examples for the method illustration are presented

  9. From Newton's bucket to rotating polygons

    DEFF Research Database (Denmark)

    Bach, B.; Linnartz, E. C.; Vested, Malene Louise Hovgaard;

    2014-01-01

    We present an experimental study of 'polygons' forming on the free surface of a swirling water flow in a partially filled cylindrical container. In our set-up, we rotate the bottom plate and the cylinder wall with separate motors. We thereby vary rotation rate and shear strength independently and...... move from a rigidly rotating 'Newton's bucket' flow to one where bottom and cylinder wall are rotating oppositely and the surface is strongly turbulent but flat on average. Between those two extremes, we find polygonal states for which the rotational symmetry is spontaneously broken. We investigate the...... phase diagram spanned by the two rotational frequencies at a given water filling height and find polygons in a regime, where the two frequencies are sufficiently different and, predominantly, when they have opposite signs. In addition to the extension of the family of polygons found with the stationary...

  10. Multispectral imaging using a single bucket detector

    CERN Document Server

    Bian, Liheng; Situ, Guohai; Li, Ziwei; Chen, Feng; Dai, Qionghai

    2015-01-01

    Current multispectral imagers suffer from low photon efficiency and limited spectrum range. These limitations are partially due to the technological limitations from array sensors (CCD or CMOS), and also caused by separative measurement of the entries/slices of a spatial-spectral data cube. Besides, they are mostly expensive and bulky. To address above issues, this paper proposes to image the 3D multispectral data with a single bucket detector in a multiplexing way. Under the single pixel imaging scheme, we project spatial-spectral modulated illumination onto the target scene to encode the scene's 3D information into a 1D measurement sequence. Conventional spatial modulation is used to resolve the scene's spatial information. To avoid increasing requisite acquisition time for 2D to 3D extension of the latent data, we conduct spectral modulation in a frequency-division multiplexing manner in the speed gap between slow spatial light modulation and fast detector response. Then the sequential reconstruction falls...

  11. Flow choking over weir flow slit-type flip buckets

    Institute of Scientific and Technical Information of China (English)

    马飞; 徐准; 吴建华

    2015-01-01

    The flow choking may occur for weir flow slit-type flip buckets under common operation conditions. An estimation method is developed through introducing a comprehensive coefficient to determine the approach flow Froude number for the flow choking to occur in those flip buckets. The error of the present method relative to the experimental data is less than 5%. The results show that, the Froude number for the flow choking to occur is related to the contraction ratio and the contraction angle of the flip buckets. When the flow choking occurs, the upper jet trajectory decreases and the lower one is almost not affected, and the dynamic pressures on the bottom and the sidewalls increase due to the flow profile rising on the flip buckets.

  12. Bucket thinking:the future framework for evolutionary explanation

    OpenAIRE

    Pievani, T; Serrelli, E

    2013-01-01

    The hierarchical interplay between ecology and genealogy is a fundamental ingredient for the most compelling current explanations in evolutionary biology. Yet philosophy of biology has hardly welcomed a classic fundamental intuition by palaeontologist Niles Eldredge, i.e. the non-coincidence and interrelation between ecology and genealogy, and their interaction in a Sloshing Bucket fashion. Hierarchy Theory and the Sloshing Bucket need to be made precise, developed and updated in light of an ...

  13. Leaky Buckets Versus Compensating Justice: An Experimental Investigation

    OpenAIRE

    Eva Camacho-Cuena; Tibor Neugebauer; Christian Seidl

    2007-01-01

    Leaky-bucket transactions can be regarded as income transfers allowing for transaction costs. In its most rudimentary form, leaky-bucket transactions trace out the maximum “leakage” of transaction costs before income inequality is exacerbated, or—alternatively—before a welfare loss is experienced. This notion suggests that part of the income transfer should reach the transferee in order to keep the degree of income inequality or social welfare intact. However, in general, this conjecture is t...

  14. Modelling bucket excavation by finite element

    Science.gov (United States)

    Pecingina, O. M.

    2015-11-01

    Changes in geological components of the layers from lignite pits have an impact on the sustainability of the cup path elements and under the action of excavation force appear efforts leading to deformation of the entire assembly. Application of finite element method in the optimization of components leads to economic growth, to increase the reliability and durability of the studied machine parts thus the machine. It is obvious usefulness of knowledge the state of mechanical tensions that the designed piece or the assembly not to break under the action of tensions that must cope during operation. In the course of excavation work on all bucket cutting force components, the first coming into contact with the material being excavated cutting edge. Therefore in the study with finite element analysis is retained only cutting edge. To study the field of stress and strain on the cutting edge will be created geometric patterns for each type of cup this will be subject to static analysis. The geometric design retains the cutting edge shape and on this on the tooth cassette location will apply an areal force on the abutment tooth. The cutting edge real pattern is subjected to finite element study for the worst case of rock cutting by symmetrical and asymmetrical cups whose profile is different. The purpose of this paper is to determine the displacement and tensions field for both profiles considering the maximum force applied on the cutting edge and the depth of the cutting is equal with the width of the cutting edge of the tooth. It will consider the worst case when on the structure will act both the tangential force and radial force on the bucket profile. For determination of stress and strain field on the form design of cutting edge profile will apply maximum force assuming uniform distribution and on the edge surface force will apply a radial force. After geometric patterns discretization on the cutting knives and determining stress field, can be seen that at the

  15. Development of 50 kV ultra-fast dipole-quadrupole kicker for bucket-by-bucket beam handling

    International Nuclear Information System (INIS)

    Ultra-fast dipole / quadrupole field variable kicker was developed for bucket-by-bucket handling of a beam and tested with a 1 GeV electron beam from the SPring-8 linac. The kicker produces dipole field to quadrupole field by changing the driving voltage and polarity. The kicker was tested with 50 kV pulse generator and the high kick field was expected in the kicker. For dipole kick, the kicker does not impose the horizontal aperture. (author)

  16. Bucket shaking stops bunch dancing in Tevatron

    Energy Technology Data Exchange (ETDEWEB)

    Burov, A.; Tan, C.Y.; /Fermilab

    2011-03-01

    Bunches in Tevatron are known to be longitudinally unstable: their collective oscillations, also called dancing bunches, persist without any signs of decay. Typically, a damper is used to stop these oscillations, but recently, it was theoretically predicted that the oscillations can be stabilized by means of small bucket shaking. Dedicated measurements in Tevatron have shown that this method does stop the dancing. According to predictions of Refs. [2,3], the flattening of the bunch distribution at low amplitudes should make the bunch more stable against LLD. An experiment has been devised to flatten the distribution by modulating the RF phase at the low-amplitude synchrotron frequency for a few degrees of amplitude. These beam studies show that stabilisation really happens. After several consecutive shakings, the dancing disappears and the resulting bunch profile becomes smoother at the top. Although not shown in this report, sometimes a little divot forms at the centre of the distribution. These experiments confirm that resonant RF shaking flattens the bunch distribution at low amplitudes, and the dancing stops.

  17. Bucket shaking stops bunch dancing in Tevatron

    International Nuclear Information System (INIS)

    Bunches in Tevatron are known to be longitudinally unstable: their collective oscillations, also called dancing bunches, persist without any signs of decay. Typically, a damper is used to stop these oscillations, but recently, it was theoretically predicted that the oscillations can be stabilized by means of small bucket shaking. Dedicated measurements in Tevatron have shown that this method does stop the dancing. According to predictions of Refs. (2,3), the flattening of the bunch distribution at low amplitudes should make the bunch more stable against LLD. An experiment has been devised to flatten the distribution by modulating the RF phase at the low-amplitude synchrotron frequency for a few degrees of amplitude. These beam studies show that stabilisation really happens. After several consecutive shakings, the dancing disappears and the resulting bunch profile becomes smoother at the top. Although not shown in this report, sometimes a little divot forms at the centre of the distribution. These experiments confirm that resonant RF shaking flattens the bunch distribution at low amplitudes, and the dancing stops.

  18. Multispectral imaging using a single bucket detector.

    Science.gov (United States)

    Bian, Liheng; Suo, Jinli; Situ, Guohai; Li, Ziwei; Fan, Jingtao; Chen, Feng; Dai, Qionghai

    2016-01-01

    Existing multispectral imagers mostly use available array sensors to separately measure 2D data slices in a 3D spatial-spectral data cube. Thus they suffer from low photon efficiency, limited spectrum range and high cost. To address these issues, we propose to conduct multispectral imaging using a single bucket detector, to take full advantage of its high sensitivity, wide spectrum range, low cost, small size and light weight. Technically, utilizing the detector's fast response, a scene's 3D spatial-spectral information is multiplexed into a dense 1D measurement sequence and then demultiplexed computationally under the single pixel imaging scheme. A proof-of-concept setup is built to capture multispectral data of 64 pixels × 64 pixels × 10 wavelength bands ranging from 450 nm to 650 nm, with the acquisition time being 1 minute. The imaging scheme holds great potentials for various low light and airborne applications, and can be easily manufactured as production-volume portable multispectral imagers. PMID:27103168

  19. Dynamic response of jetting and cementing bucket platform to wave and current loading

    Institute of Scientific and Technical Information of China (English)

    Wang Hu; Wang Deyu

    2006-01-01

    The jetting and cementing bucket platform (JCBP) is a new type offshore oil-drilling platform. This paper aims to establish an analysis method for calculating the dynamic response of this platform. Based on the theory of elastic half space, the dynamic stiffness and damping of the platform's foundation were obtained and attached to the end of the platform's main jackets as a boundary condition. Then using finite element method (FEM), the dynamic response of the platform due to wave and current loading was calculated. Furthermore, the whole platform's finite element model was established and the dynamic response of the platform was calculated. The numerical results demonstrate that the present method by the usage of elastic half space theory and FEM is simple and it is reliable and efficient to calculate dynamic behavior of the platform in response to wave and current loading.

  20. PKD Foundation

    Science.gov (United States)

    ... Up for Advocacy Alerts Donate Ways to Give Foundation Partners Estate Gift Planning Tribute Giving News About ... know Learn More About PKD and the PKD Foundation Make a Gift I Have PKD I Know ...

  1. Scleroderma Foundation

    Science.gov (United States)

    ... Ways to Add Sun Protection This Summer Scleroderma Foundation National Director of Programs and Services Named Chair ... Get more news headlines >> Buzzworthy Reads>> Facebook Scleroderma Foundation E-Newsletter Signup Get the latest news. Please ...

  2. Vasculitis Foundation

    Science.gov (United States)

    ... fund the most promising studies. Support the Vasculitis Foundation Donate Now Join VF Team Brandon and Victory ... map feature to find a doctor or Vasculitis Foundation chapter near you. Participate in research Help find ...

  3. Time bucket size and lot-splitting approach

    NARCIS (Netherlands)

    Riezebos, Jan

    2002-01-01

    We address the problem of lot splitting for various time bucket lengths in MRP systems. Two approaches for lot splitting can be applied: either use the same (equal) or a variable number of subbatches. Equal subbatching strategies have logistical and computational advantages. Literature states that v

  4. Determination of quaternary strata diggability with bucket wheel excavators

    Energy Technology Data Exchange (ETDEWEB)

    Ural, S.; Onur, A.H. [Afsin-Elbistan Lignite Establishment (Turkey)

    1994-12-31

    This paper relates the field investigations of the Quaternary strata series diggability with a bucket wheel excavator (BWE), carried out in Afsin-Elbistan Lignite Establishment (AEL). The investigations were intended to determine the Quaternary strata diggability and, in particular, to define the relative difficulty of excavating in-situ and preblasted layers. 3 refs., 11 figs., 3 tabs.

  5. Numerical analysis of the bucket surface roughness effects in Pelton turbine

    International Nuclear Information System (INIS)

    The internal flow of a Pelton turbine is quite complex. It is difficult to analyse the unsteady free water sheet flow in the rotating bucket owing to the lack of a sound theory. Affected by manufacturing technique and silt abrasion during the operation, the bucket surface roughness of Pelton turbine may be too great, and thereby influence unit performance. To investigate the effect of bucket roughness on Pelton turbine performance, this paper presents the numerical simulation of the interaction between the jet and the bucket in a Pelton turbine. The unsteady three-dimensional numerical simulations were performed with CFX code by using the SST turbulence model coupling the two-phase flow volume of fluid method. Different magnitude orders of bucket surface roughness were analysed and compared. Unsteady numerical results of the free water sheet flow patterns on bucket surface, torque and unit performance for each bucket surface roughness were generated. The total pressure distribution on bucket surface is used to show the free water sheet flow pattern on bucket surface. By comparing the variation of water sheet flow patterns on bucket surface with different roughness, this paper qualitatively analyses how the bucket surface roughness magnitude influences the impeding effect on free water sheet flow. Comparison of the torque variation of different bucket surface roughness highlighted the effect of the bucket surface roughness on the Pelton turbine output capacity. To further investigate the effect of bucket surface roughness on Pelton turbine performance, the relation between the relative efficiency loss rate and bucket surface roughness magnitude is quantitatively analysed. The result can be used to predict and evaluate the Pelton turbine performance

  6. Corporate Foundations

    DEFF Research Database (Denmark)

    Herlin, Heidi; Thusgaard Pedersen, Janni

    2013-01-01

    This paper aims to explore the potential of Danish corporate foundations as boundary organizations facilitating relationships between their founding companies and non-governmental organizations (NGOs). Hitherto, research has been silent about the role of corporate foundations in relation to cross......-sector partnerships. The results of this paper are based on interviews, participant observations, and organizational documents from a 19-month empirical study of a Danish corporate foundation. Findings suggest that corporate foundations have potential to act as boundary organizations and facilitate collaborative...... action between business and NGOs through convening, translation, collaboration, and mediation. Our study provides valuable insights into the tri-part relationship of company foundation NGO by discussing the implications of corporate foundations taking an active role in the realm of corporate social...

  7. First-stage high pressure turbine bucket airfoil

    Science.gov (United States)

    Brown, Theresa A.; Ahmadi, Majid; Clemens, Eugene; Perry, II, Jacob C.; Holiday, Allyn K.; Delehanty, Richard A.; Jacala, Ariel Caesar

    2004-05-25

    The first-stage buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at the radially innermost aerodynamic section of the airfoil and X and Y are coordinates defining the airfoil profile at each distance Z. The X, Y and Z values may be scaled as a function of the same constant or number to provide a scaled-up or scaled-down airfoil section for the bucket.

  8. An RF cavity for barrier bucket experiment in the AGS

    International Nuclear Information System (INIS)

    A barrier bucket experiment in the AGS is planed in 1998. An accumulation of the beam, which intensity of 1.0 x 1014ppp is, acceleration after the injection with a barrier bucket scheme and other RF gymnastics experiments will be studied. An isolated RF pulse of 40 kV per cavity is necessary for the experiment. The RF frequency is 2 MHz and the isolated pulse is generated at the repetition rate of the revolution frequency of 357 kHz. We have developed the barrier cavity for this experiment. The cavity is loaded with FINEMET core. It has low Q value but high shunt impedance. It makes the necessary power less than that of ferrite-loaded cavity for an isolated RF pulse. (author)

  9. Novel Processing of Tipping-Bucket Rain Gauge Records

    Czech Academy of Sciences Publication Activity Database

    Fišer, Ondřej; Wilfert, O.

    2009-01-01

    Roč. 92, č. 3 (2009), s. 283-288. ISSN 0169-8095. [International workshop on precipitation in urban areas /7./. St. Moritz, 07.12.2006-10.12.2006] R&D Projects: GA ČR GA102/08/0851 Institutional research plan: CEZ:AV0Z30420517 Keywords : Tipping-bucket rain gauge * rain rate * rain data processing * rain data simulation Subject RIV: DG - Athmosphere Sciences, Meteorology Impact factor: 1.811, year: 2009

  10. Semiring-based mini-bucket partitioning schemes

    OpenAIRE

    Rollón Rico, Emma; Larrosa Bondia, Francisco Javier; Dechter, Rina

    2013-01-01

    Graphical models are one of the most prominent frameworks to model complex systems and efficiently query them. Their underlying algebraic properties are captured by a valuation structure that, most usually, is a semiring. Depending on the semiring of choice, we can capture probabilistic models, constraint networks, cost networks, etc. In this paper we address the partitioning problem which occurs in many approximation techniques such as mini-bucket elimination and join-graph propagation algor...

  11. Bucket Elimination: A Unifying Framework for Several Probabilistic Inference

    OpenAIRE

    Dechter, Rina

    2013-01-01

    Probabilistic inference algorithms for finding the most probable explanation, the maximum aposteriori hypothesis, and the maximum expected utility and for updating belief are reformulated as an elimination--type algorithm called bucket elimination. This emphasizes the principle common to many of the algorithms appearing in that literature and clarifies their relationship to nonserial dynamic programming algorithms. We also present a general way of combining conditioning and elimination within...

  12. Canavan Foundation

    Science.gov (United States)

    ... the Foundation's activities and a tribute to the late Randy Yudenfriend Glaser, President of the Jewish Genetic Disease Consortium. ... Information For: Couple of Childbearing Age Carrier of Canavan Disease Parents of a ...

  13. Epilepsy Foundation

    Science.gov (United States)

    ... Gastaut Syndrome Infantile Spasms and Tuberous Sclerosis Complex Facebook Epilepsy Foundation of America Join David Taplinger, MD, ... helping to make Hidden Truths, The Mind Unraveled art show happen! For more information and tickets to ...

  14. Dysautonomia Foundation

    Science.gov (United States)

    ... disease most people have never heard of ... Familial Dysautonomia (FD) is a rare genetic neurological disorder that ... birth. (More about FD .) Research funded by the Dysautonomia Foundation has led to a number of breakthroughs ...

  15. Structural Optimization of an Offshore Wind Turbines Transition Pieces for Bucket Foundations

    DEFF Research Database (Denmark)

    Nezhentseva, Anastasia; Andersen, Lars Vabbersgaard; Ibsen, Lars Bo;

    residual soil conditions for depths up to approximately 40 m. The existing design practice is limited to the use of steel-flange-reinforced shear panels. Desirable outcome is proposal of an alternative material which does not require extensive welding work. Compact reinforced composite (CRC) is suggested...... is limited offshore, mainly, to making a grouting connection of a transition piece to a monopile. Lack of standards and norms puts additional restriction on application of CRC. In the earlier work, the structural performance of transition pieces with a conical shape was compared for a 5 MW offshore......, corresponding to deviation of the middle surface from the perfect ideal shape of the shell structure, and was assumed for further investigation. The steel model showed the highest sensitivity to geometrical and loading imperfections. This paper presents optimization of the CRC TP structure to lower...

  16. Design of Transition Pieces for Bucket Foundations for Offshore Wind Turbines

    DEFF Research Database (Denmark)

    Nezhentseva, Anastasia

    -High-Performance Fibre-Reinforced Concrete (UHPFRC) with dense main reinforcement. A study on workability of UHPFRC material, compressive strength, and non-destructive Computed Tomography (CT-scanning) tests for analysis of fibre orientation, distribution and presence of cracks and air voids were carried out on a batch...... of UHPFRC samples cast at AAU. Firstly, a conical design of the TP was proposed using three material models: CRC®-steel composite, pure CRC® and steel shell. Carrying capacity in the ULS was checked, and the eigenvalue buckling analysis of the shells was performed. Additionally, a non...... study the effect of implementation of cutaways and propose the shape that could minimize wave forces acting on the TPs. Based on the x Nezhentseva results of the present investigation, it is believed that mass production of the transition pieces for offshore wind turbines made of UHPFRC is recommended....

  17. New Medium-Scale Laboratory Testing of Bucket Foundation Capacity in Sand

    DEFF Research Database (Denmark)

    Vaitkunaite, Evelina; Ibsen, Lars Bo; Nielsen, Benjaminn Nordahl

    2014-01-01

    the test set-up allow long-term examination with more than 40 000 cycles. Tests can be done with specimens of up to one meter in diameter and one meter in skirt length. The overburden pressure can be as large as 70 kPa using a tight latex membrane which covers the specimen and the soil surface. In...

  18. High Speed Flow Visualisation of an Impinging Jet on a Pelton Turbine Bucket

    OpenAIRE

    Perrig, A.; Avellan, F.; Farhat, M.

    2007-01-01

    This paper deals with flow investigations using endoscopes in a single-injector reduced scale Pelton turbine performed with a CMOS high-speed camera. Both onboard and external visualizations techniques of the flow in a bucket are presented. The flow observations evidence the unsteadiness of the successive steps of jet/bucket interaction, free surface flow development and evolution throughout the bucket duty cycle.

  19. Displaced Medial and Lateral Bucket Handle Meniscal Tears With Intact ACL and PCL.

    Science.gov (United States)

    Boody, Barrett S; Omar, Imran M; Hill, James A

    2015-08-01

    Bucket handle lesions are vertical longitudinal tears in the meniscus that may displace centrally into the respective medial or lateral compartment, frequently causing mechanical symptoms, including pain, perceived instability, and mechanical locking. Bucket handle meniscal tears are most commonly from a traumatic etiology and are frequently found with concomitant anterior cruciate ligament (ACL) injuries. Multiple imaging signs and associations have been described for the diagnosis of bucket handle meniscus tears, including coronal truncation, absent bow tie sign, double posterior cruciate ligament (PCL), double ACL, displacement of the bucket handle fragment, and disproportionate posterior horn signs. Among meniscal pathology encountered on magnetic resonance imaging or during arthroscopy, bucket handle meniscal tears are infrequent occurrences. Furthermore, the occurrence of displaced medial and lateral bucket handle tears found on imaging and during arthroscopy is very uncommon and is only sparsely reported in the literature. When displaced medial and lateral bucket handle meniscal segments are visualized within the intercondylar notch along with the ACL and PCL, the radiologic findings are referred to as the "quadruple cruciate" sign or the "Jack and Jill lesion." Of the few case reports described in the literature, only one noted displaced medial and lateral bucket handle meniscus tears with an intact ACL and PCL. The current case report outlines a similar rare case of the quadruple cruciate sign: displaced medial and lateral bucket handle meniscal tears located within the intercondylar notch and an intact ACL and PCL. PMID:26270763

  20. Comparison of Foundation Systems for Wave Energy Converters Wavestar

    DEFF Research Database (Denmark)

    Vaitkunaite, Evelina; Ibsen, Lars Bo; Nielsen, Benjaminn Nordahl;

    2013-01-01

    six possible foundation solutions for WEC are presented in this article. The study is performed for WEC superstructure supported by two or four foundations. In the four-column system horizontal wind and wave loads are transformed as a pair of vertical forces, acting in tension and compression. When......In order to deliver cost competitive solutions, Wave Energy Converters (WEC) must be optimized in several fields, e.g. transportation, installation, structure, machinery etc. Large expenses lie on the superstructure support, i.e. the offshore foundation. Geotechnical analysis and optimization of...... such a solution horizontal wind and wave loads are dominant. Gravity based, pile and bucket foundations are universally applied solutions for the offshore structures. The suitability of these types for a WEC is analysed and commented. The foundations are designed to satisfy ultimate and serviceability...

  1. Results of Dynamic Calibration of Tipping-Bucket Rain Gauges

    Science.gov (United States)

    Kvicera, V.; Grabner, M.

    2009-04-01

    Experimental research in the Department of Frequency Engineering in the Czech Metrology Institute (CMI) in Prague, the Czech Republic, is focused on stability of received signal on terrestrial radio and optical paths. Rain can cause serious attenuation of electromagnetic waves in the frequency bands over 10 GHz. Therefore, our experimental research is also focused on our own meteorological measurement in the vicinity of experimental radio and optical paths. The heated tipping-bucket raingauge MR3H manufactured by Meteoservis, the Czech Republic, with the collector area of 500 cm2 and the rain amount per tip of 0.1 mm is used at CMI for the measurement of rainfall intensities. The time of tips is recorded with uncertainty of 0.1 second. The obtained time of tips are stored by PC and recorded on CD-ROM. It is generally known higher rainfall intensities measured by tipping-bucket rain gauges are underestimated. Therefore, after static calibration the tipping-bucket rain gauge was dynamically calibrated by water flowmeters. The Brooks FLOMEGA Flow Meters models 5882 and 3750 were used for the rain gauge calibration in the range from 2.6 mm/h to 530 mm/h. The used method of dynamic calibration of raingauges and our experience obtained will be described. The dependence of the measured rain intensity on the reference rain intensity (calibration curve) will be presented. Both the results obtained and the influence of dynamic calibration on our results concerning attenuation of electromagnetic waves due to rain will be discussed. Ministry of Education, Youth and Sports of the Czech Republic under the Project No. OC09076 supported the described work.

  2. A BUNCH TO BUCKET PHASE DETECTOR USING DIGITAL RECEIVER TECHNOLOGY.

    Energy Technology Data Exchange (ETDEWEB)

    DELONG,J.; BRENNAN, J. M.; HAYES,T.; TUONG, N. LE,; SMITH, K.

    2003-05-12

    Transferring high-speed digital signals to a Digital Signal Processor is limited by the IO bandwidth of the DSP. A digital receiver circuit is used to translate high frequency W signals to base-band. The translated output frequency is close to DC and the data rate can be reduced, by decimation, before transfer to the DSP. By translating both the longitudinal beam (bunch) and RF cavity pick-ups (bucket) to DC, a DSP can be used to measure their relative phase angle. The result can be used as an error signal in a beam control servo loop and any phase differences can be compensated.

  3. A BUNCH TO BUCKET PHASE DETECTOR USING DIGITAL RECEIVER TECHNOLOGY

    International Nuclear Information System (INIS)

    Transferring high-speed digital signals to a Digital Signal Processor is limited by the IO bandwidth of the DSP. A digital receiver circuit is used to translate high frequency W signals to base-band. The translated output frequency is close to DC and the data rate can be reduced, by decimation, before transfer to the DSP. By translating both the longitudinal beam (bunch) and RF cavity pick-ups (bucket) to DC, a DSP can be used to measure their relative phase angle. The result can be used as an error signal in a beam control servo loop and any phase differences can be compensated

  4. Hydrodynamics of the free surface flow in Pelton turbine buckets

    OpenAIRE

    Perrig, Alexandre; Avellan, François; Farhat, Mohamed

    2008-01-01

    The design of Pelton turbines has always been more difficult than that of reaction turbines, and their performances lower. Indeed, the Pelton turbines combine 4 types of flows: (i) confined, steady-state flow in the piping systems and injector, (ii) free water jets, (iii) 3D unsteady free surface flows in the buckets, and (iv) dispersed 2-phase flows in the casing. The flow in Pelton turbines has not been analyzed so far with such detail as the flow in the reaction turbines, thus the understa...

  5. Hydrodynamics of the free surface flow in Pelton turbine buckets

    OpenAIRE

    Perrig, Alexandre

    2007-01-01

    The design of Pelton turbines has always been more difficult than that of reaction turbines, and their performances lower. Indeed, the Pelton turbines combine 4 types of flows: (i) confined, steady-state flow in the piping systems and injector, (ii) free water jets, (iii) 3D unsteady free surface flows in the buckets, and (iv) dispersed 2-phase flows in the casing. The flow in Pelton turbines has not been analyzed so far with such detail as the flow in the reaction turbines, thus the understa...

  6. Applied Foundations

    DEFF Research Database (Denmark)

    Kohlenbach, Ulrich

    2002-01-01

    A central theme in the foundations of mathematics, dating back to D. Hilbert, can be paraphrased by the following question "How is it that abstract methods (`ideal elements´) can be used to prove `real´ statements e.g. about the natural numbers and is this use necessary in principle?"...

  7. Specific cutting force and production capacity of bucket wheel excavators with non-extendable bucket wheel booms. Specificna sila kopanja i tehnicki kapacitet rotornog bagera bez izvlacenja katarke rotora

    Energy Technology Data Exchange (ETDEWEB)

    Popovic, N.; Komljenovic, D. (Rudarsko-Geoloski Fakultet, Tuzla (Yugoslavia))

    1989-01-01

    Analyzes determination of required cutting forces of bucket wheel excavators operating in surface mines. Various formulae are proposed for calculating excavator capacity and excavator cutting force. Formulae take into account parameters of excavator design and operation, as well as geomechanical soil properties. Buckets are of oblique or trapezoidal shape. Effects of bucket shape and cutting tooth length are calculated. 9 refs.

  8. Stability of Flat Bunches in the Recycler Barrier Bucket

    Energy Technology Data Exchange (ETDEWEB)

    Sen, T.; Bhat, C.; Ostiguy, J.-F.; /Fermilab

    2009-05-01

    We examine the stability of intense flat bunches in barrier buckets used in the Fermilab Recycler. We consider some common stationary distributions and show that they would be unstable against rigid dipole oscillations. We discuss the measurements which identify stable distributions. We also report on experimental studies on the impact of creating a local extremum of the incoherent frequency within the rf bucket. We considered two typical stationary distributions and found they were not adequate descriptions of the Recycler bunches. From the measured line density distribution we find (a) the tanh function is a good fit to the line density, and (b) the coherent frequency of the rigid dipole mode for this distribution is within the incoherent spread at nominal intensities. Stability diagrams when the beam couples to space charge and external impedances will be discussed elsewhere. Our initial experimental investigations indicate that longitudinal stability in the Recycler is, consistent with expectations, influenced by the ratio T{sub 2}/(4T{sub 1}) which determines the location of the extremum of the incoherent tune. The coherent tune depends strongly on the distribution in the bunch tails which is difficult to measure. Numerical studies using both a conventional tracking code and a Vlasov solver are in progress and should provide more insight into conditions that may lead to unstable behavior.

  9. Barrier Buckets and Transient Beam Loading in the SPS

    CERN Document Server

    Bohl, T; Garoby, R; Linnecar, Trevor Paul R; Shaposhnikova, Elena; Tückmantel, Joachim

    2003-01-01

    Using long bunches held in place by barrier buckets to overcome the limitations associated with peak density in high intensity bunched beams could be a promising scheme for increasing the luminosity of LHC. In the SPS at CERN an initial barrier bucket machine development(MD) study was done in 1999 to check the capabilities of 200 MHz thick barriers generated by the travelling wave system. A second experiment took place on 5th of August 2003 to examine high intensity effects. In this experiment a flat and stable long bunch of @ 3 µs bunch length was obtained and kept for more than 80 minutes without developing a significant line density modulation. However, strong beam loading effects were observed during the injection process, causing a coherent, non-negligible energy transfer from the beam to the RF cavities, and significant fraction of the injected beam was lost to a coasting beam background. The beam intensity that could be confined in between the barriers suffered emittance increase and was not high enou...

  10. Application of modern calculation and design methods for bucket wheel sleeve shafts

    Energy Technology Data Exchange (ETDEWEB)

    Moeser, H. (VEB Schwermaschinenbau Lauchhammerwerk, Lauchhammer-Ost (German Democratic Republic))

    1989-01-01

    Explains design of the bucket wheel sleeve shaft for the large SRs 6,300 bucket wheel excavator, built by TAKRAF, GDR. The excavator has a production capacity of 14,500 m{sup 3}/h and a bucket wheel diameter of 17 m. The bucket wheel shaft is 7 m long and weighs 33 t. A scheme of the shaft is provided. The design was developed by computer calculations with the ROSCHA program system of the Dresden Technical University. Shaft groove geometry was determined with the ALPHA program. The shaft was welded from segments that fulfilled requirements of the TGL 19 340 industrial standard. Measurements of load on this bucket wheel shaft and assessment of service life have been made during excavator operations in brown coal surface mines. 5 refs.

  11. Experimental studies on resulting bucket wheel load in hard and brittle soil

    Energy Technology Data Exchange (ETDEWEB)

    Hitzschke, K.; Hubrich, F. (Technische Universitaet, Dresden (German Democratic Republic))

    1990-06-01

    Evaluates cutting experiments carried out by a 1:10 model of a SRs 2,000 bucket wheel excavator of the TAKRAF manufacturer aimed at measuring real load on the bucket wheel, regarded as more accurate than using model tests with single cutting buckets. A scheme of the model bucket wheel and its boom is demonstrated. Measuring devices for bucket wheel load are pointed out. Weak sand concrete was used for cutting experiments. The analysis focuses on tangential, lateral and normal forces as well as on angles of pressure. A cutting force model is further established. A comparison is made between measured and calculated load in tangential and normal direction. It is concluded that the established cutting force model was improved during cutting tests and should be further developed. 10 refs.

  12. BONE CHAR BASED BUCKET DEFLUORIDATOR IN TANZANIAN HOUSEHOLDS

    DEFF Research Database (Denmark)

    Jacobsen, P.; Dahi, Elian

    1997-01-01

    A household defluoridator, made of a 20 L plastic bucket and 10 kg of bone char, is tested and found efficient to remove fluoride at a capacity of 1.1 mg/g. On an average, the defluoridator reduced the original contents of 8.5 mgF/L to 0.37 mgF/L, i.e. 95.6 %, for a period of 2 months, where 32.5 L...... were treated every day. The defluoridator could be manufactured locally in Ngurdoto village, Arusha Region Tanzania for a price of about 10 US $ per unit. The defluoridator is monitored as operated in 10 households. The defluoridator reduced the fluoride concentration from 10.5 mg/L to less than 1 mg...

  13. Load on the slewing drive of bucket wheel excavators by cutting forces

    Energy Technology Data Exchange (ETDEWEB)

    Meixner, P.

    1983-09-01

    Presented are formulae and vectorial diagrams for calculating slewing forces of bucket wheel excavators. Parameters include bucket geometry, specific cutting force, average values of cutting force components, slewing power and others. Calculations proceed according to the methods of W. A. Kowrigin and G.J. Neplotnik (1978) and H. Haertig, R. Ciesielski, K. Strzodka and R. Steinmetz. Calculated values for slewing drives of the SRs 240 and SRs 1,300 bucket wheel excavators, built by TAKRAF, are compared to slewing force measurements conducted during mining. Calculated and measured values are in good correlation. (3 refs.) (In German)

  14. Free medial meniscal fragment which mimics the dislocated bucket-handle tear on MRI.

    Science.gov (United States)

    Türkmen, Faik; Korucu, Ismail Hakkı; Sever, Cem; Demirayak, Mehmet; Goncü, Gani; Toker, Serdar

    2014-01-01

    The bucket-handle meniscal tear is a specific type of meniscal injuries which has specific signs on MRI. An attached fragment displaced away from the meniscus with any type of tear causes bucket-handle tear of the meniscus. Magnetic resonance imaging (MRI) is the most commonly used diagnostic tool for meniscal injuries. We present a case of free medial meniscal fragment which mimics the dislocated bucket-handle tear on MRI. The presence of "fragment within the intercondylar notch sign" and "the absence of the bow tie sign" may be an indication of a free meniscal fragment. This should be considered during diagnosis. PMID:25002980

  15. Free Medial Meniscal Fragment Which Mimics the Dislocated Bucket-Handle Tear on MRI

    Directory of Open Access Journals (Sweden)

    Faik Türkmen

    2014-01-01

    Full Text Available The bucket-handle meniscal tear is a specific type of meniscal injuries which has specific signs on MRI. An attached fragment displaced away from the meniscus with any type of tear causes bucket-handle tear of the meniscus. Magnetic resonance imaging (MRI is the most commonly used diagnostic tool for meniscal injuries. We present a case of free medial meniscal fragment which mimics the dislocated bucket-handle tear on MRI. The presence of “fragment within the intercondylar notch sign” and “the absence of the bow tie sign” may be an indication of a free meniscal fragment. This should be considered during diagnosis.

  16. Cross sections for atomic processes, vol. 2

    International Nuclear Information System (INIS)

    This data collection book contains the data on all processes involving hydrogen and helium isotopes, their ions, electrons and photons, collected systematically and comprehensively, and is compiled subsequently to Vol. 1 as one of the works of the data collection study group in the Institute of Plasma Physics, Nagoya University, Japan. The items of the contents will include energy level, multiplicately excited state, radiation process, electron collision, ionic collision, recombination, collision of neutral atoms, colliding process involving molecules, and other processes. However, the first edition this time contains energy level, radiation process, electron collision and ionic collision, and the data on remaining items are now under collection. Though some criticisms have been heard about Vol. 1, the authors consider that such comprehensive collection based on systematic classification is the foundation of making a generalized data bank expected to become necessary in future. Thus the data collection book includes all relevant processes, and records the experimental data and theoretically calculated results in principle without modification by selecting them systematically. This year, investigation on data evaluation is taken up also as one of the tasks of the study group. (Wakatsuki, Y.)

  17. Climate Prediction Center (CPC) Global Monthly Leaky Bucket Soil Moisture Analysis

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Monthly global soil moisture, runoff, and evaporation data sets produced by the Leaky Bucket model at 0.5? ? 0.5? resolution for the period from 1948 to the...

  18. Operation and maintenance techniques of 1 ton bucket elevator in IMEF

    International Nuclear Information System (INIS)

    IMEF pool is used as a pathway between pool and hot cell in order to transfer (incoming and outgoing) irradiated materials. Transfer is performed by 1 ton bucket elevator which is moved inside the rectangular tube installed between pool and M1 hot cell. Allowable load capacity is 1 ton of the bucket elevator and its size is 25 X 25 X 150 cm. Bucket is driven by chain system which is moved up and down through the guide rail. Guide rail is installed in rectangular tube that is tilted about 63 degree. Chain which is moved by using the roller sliding method is driven by sprocket wheel being rotated by the shaft and the shaft is driven by gear reducing motor. In this report operation and maintenance techniques of 1 ton bucket elevator in IMEF are described in detail. (Author). 8 refs., 14 tabs., 6 figs

  19. ITALIMPIANTI designs bucket wheel reclaimer and stacker for North Pulau Laut Terminal

    Energy Technology Data Exchange (ETDEWEB)

    Landi, M.; Cugnach, P. (ITALIMPIANTI, Genoa (Italy))

    Briefly describes the bucket wheel reclaimer and boom stacker, designed by ITALIMPIANTI and supplied by Noyes Clough of Australia to the coal transhipment terminal at the north end of the island of Pulau Laut, South Kalimantan. 1 tab., 2 photos

  20. Split roller bearings in bucket wheel excavators. Geteilte Waelzlager in Schaufelradbaggern

    Energy Technology Data Exchange (ETDEWEB)

    Herles, G. (FAG Kugelfischer Georg Schaefer KGaA, Schweinfurt (Germany))

    1991-09-01

    Roller bearings for bucket wheel gearing and for bucket wheel shafts have to meet high requirements to cope with the rugged conditions of opencast workings. Operating safety and reliability, long service life and easy maintenance are factors of primary importance. Since 1970 the heavy-duty machine construction firm Lauchhammer TAKRAF has used split cylinder roller bearings manufactured by the firm of FAG Kugelfischer Georg Schaefer for the gear driven wheels in bucket wheel gear systems instead of the orginally installed split journal bearings. Split self-aligning roller bearings have proved a satisfactory solution as bearings for bucket wheel shafts. The bearings developed in co-operation with FAG are economical in design, ensure high operating safety and reliability and can be assembled or dismantled easily and quickely. A total number of more than 120 FAG split cylindrical roller bearings and self-aligning roller bearings are already in service in TAKRAF excavators. (orig.).

  1. Cutting of hard overburden and mining of black coal by TAKRAF bucket wheel excavators

    Energy Technology Data Exchange (ETDEWEB)

    Jurisch, H.

    1988-08-01

    Reviews specifications and performance of TAKRAF bucket wheel excavators in various surface mines with hard overburden or coal. Photographs of excavators, design of bucket wheels and cutting teeth as well as main parameters including power requirement, excavation capacity, cutting range etc. are given. Excavators considered are the SRs(K)2,000, operating at the Ehkibastuz black coal mine (USSR), the SRs2,000, operating in Greece, the largest TAKRAF built excavator SRs6,300 with 11,000 m/sup 3//h production capacity, the smaller sized SRs130 to 450, some of which operate in Austria and Yugoslavia. The SRs700 and SRs1,500 excavators with up to 4,000 m/sup 3//h production capacity are being developed. Various formulae concerning specific digging forces for rectangular and semi-circular buckets used by the manufacturer for designing cutting teeth and shape of buckets are also provided. 6 refs.

  2. Experimental analysis of the load on the bucket wheel by the digging process - Part 2

    Energy Technology Data Exchange (ETDEWEB)

    Hitzschke, K.; Jacob, K.

    1984-10-01

    Bench-scale experiments aimed at modeling the digging process of bucket wheel excavators are evaluated. The design of the laboratory bucket wheel digging machine as well as the arrangement of measuring devices are explained. Measurement values were computer processed with TAKRAF programs on model dynamics for heavy surface mining equipment. Various graphs show cutting force components for single digging teeth and for an asymmetrical digging vessel. Cutting is carried out in advancing and slewing direction. Functions for mean values of digging forces are given with which the load on the bucket wheel can be determined. The mathematical description of the digging process is a means of assessing geometrical design and digging performance of buckets.

  3. Study of Aeration Performance of Open Channel Chutes Equipped with a Flip Bucket

    OpenAIRE

    EMİROĞLU, M. Emin

    2003-01-01

    An adequate supply of dissolved oxygen (DO) is essential for the survival of aquatic organisms. Hydraulic structures can increase DO levels by creating turbulent conditions where small air bubbles are carried into the bulk of the flow. The flip bucket on open channel chutes with mild slopes is a particular instance of this, although the aeration performance of such structures has not been studied in the laboratory and field. This paper considers flip bucket chutes with different inc...

  4. Bucket Brigades to Increase Productivity in a Luxury Assembly Line

    Directory of Open Access Journals (Sweden)

    Filippo De Carlo

    2013-08-01

    Full Text Available One of the most challenging issues in manual assembly lines is to achieve the best balance of workloads. There are many analytic approaches to solve this problem, but they are often neglected, since they are time-consuming and require high level engineering skills. Fashion bags packaging lines must comply with a number of different products with low production volumes, while the organization of the line is often under the mere responsibility of the foreman, who balances workloads in an empirical way. The aim of this work is to evaluate the effectiveness of the arrangement of bucket brigades (BBs for an assembly line of luxury handbags. To do this, it was decided to perform a testing activity in a company producing fashion handbags in order to compare the self-made design with the BBs and with a simple assembly line balancing problem algorithm. The originality of this research lies in the fact that there are no studies in the literature on BBs applied to the packaging of highly variable small batches. The results were excellent, showing the advantages of BBs in terms of flexibility, the reduction of work in the process and the ability to handle small anomalies.

  5. Jumping into buckets, or How to decontaminate overlapping fat jets

    CERN Document Server

    Hamaguchi, Koichi; Stoll, Martin

    2015-01-01

    At the LHC, tagging boosted heavy particle resonances which decay hadronically, such as top quarks and Higgs bosons, can play an essential role in new physics searches. In events with high multiplicity, however, the standard approach to tag boosted resonances by a large-radius fat jet becomes difficult because the resonances are not well-separated from other hard radiation. In this paper, we propose a different approach to tag and reconstruct boosted resonances by using the recently proposed mass-jump jet algorithm. A key feature of the algorithm is the flexible radius of the jets, which results from a terminating veto that prevents the recombination of two hard prongs if their combined jet mass is substantially larger than the masses of the separate prongs. The idea of collecting jets in "buckets" is also used. As an example, we consider the fully hadronic final state of pair-produced vectorlike top partners at the LHC, $pp\\to T\\bar{T}\\to t\\bar{t}HH$, and show that the new approach works better than the corr...

  6. TAKRAF bucket wheel excavators for difficult operating conditions

    Energy Technology Data Exchange (ETDEWEB)

    Harta, H.; Jurisch, H.

    1987-04-01

    Design, performance and technical specifications are explained for bucket wheel excavators, built by TAKRAF Lauchhammerwerk, GDR. The SRs (K) 2000 excavator (capacity 3000 m/sup 3//h, digging height 28 m) has been built since 1972 and operates in Ehkibastuz black coal surface mines at a temperature range of +/- 40 C. A total of nine such excavators are in operation, two more are being built. The SRs 2000 excavator (42 are in operation, 5 more are being built) operates in the Greek Ptolemais brown coal mine with 4000 m/sup 3//h capacity and at 30 m bench height. The SRs 4000 excavator (7600 m/sup 3//h capacity, 36 m digging height) is new and being assembled at Ptolemais and at Kansk-Achinsk. The largest excavation type is the SRs 6300 for 13,000 m/sup 3//h overburden removal. Smaller equipment includes the SRs 400 operating in the Austrian Oberdorf brown coal mine and also in Yugoslavia, among other places, the SRs 700 and the SRs 1500, the latter two being developed for hard, cohesive overburden, 17 to 22 m digging height and with 2400 to 3000 m/sup 3//h capacity. Photographs of excavators operating in various surface mines are provided. 3 refs.

  7. Estimating Rain Rates from Tipping-Bucket Rain Gauge Measurements

    Science.gov (United States)

    Wang, Jianxin; Fisher, Brad L.; Wolff, David B.

    2007-01-01

    This paper describes the cubic spline based operational system for the generation of the TRMM one-minute rain rate product 2A-56 from Tipping Bucket (TB) gauge measurements. Methodological issues associated with applying the cubic spline to the TB gauge rain rate estimation are closely examined. A simulated TB gauge from a Joss-Waldvogel (JW) disdrometer is employed to evaluate effects of time scales and rain event definitions on errors of the rain rate estimation. The comparison between rain rates measured from the JW disdrometer and those estimated from the simulated TB gauge shows good overall agreement; however, the TB gauge suffers sampling problems, resulting in errors in the rain rate estimation. These errors are very sensitive to the time scale of rain rates. One-minute rain rates suffer substantial errors, especially at low rain rates. When one minute rain rates are averaged to 4-7 minute or longer time scales, the errors dramatically reduce. The rain event duration is very sensitive to the event definition but the event rain total is rather insensitive, provided that the events with less than 1 millimeter rain totals are excluded. Estimated lower rain rates are sensitive to the event definition whereas the higher rates are not. The median relative absolute errors are about 22% and 32% for 1-minute TB rain rates higher and lower than 3 mm per hour, respectively. These errors decrease to 5% and 14% when TB rain rates are used at 7-minute scale. The radar reflectivity-rainrate (Ze-R) distributions drawn from large amount of 7-minute TB rain rates and radar reflectivity data are mostly insensitive to the event definition.

  8. Skin Cancer Foundation

    Science.gov (United States)

    ... Fundraising Event | About Us | Store The Skin Cancer Foundation The Skin Cancer Foundation is the only international organization devoted solely to ... About Us Contact Us © 2016 The Skin Cancer Foundation | 149 Madison Avenue Suite 901 New York, NY ...

  9. Proteus Syndrome Foundation

    Science.gov (United States)

    ... Gift Stock Gift Sunshine Society Contact Privacy Policy Proteus Syndrome Foundation The Proteus Syndrome Foundation , a 501c3 ... 1 Trial with ARQ 092 in Proteus Syndrome Proteus Syndrome Patient Registry The Proteus Syndrome Foundation Contact ...

  10. The displaced bucket-handle tear of the meniscus: MRI findings

    International Nuclear Information System (INIS)

    To describe the features of displaced bucket-handle tears of the menisci on magnetic resonance(MR) images and to assess associated knee injuries. We retrospectively reviewed coronal and sagittal MR images in 21 bucket-handle tears. The subjects were patients who had underwent preoperative MR evaluations of the knee and were identified from the arthroscopic surgical records as bucket-handle tear. We also described patterns of associated injuries. On coronal MR images, (a) in all cases, peripheral portion of the meniscus(bucket) had the appearance of a truncated or altered wedge; (b) central fragments(handle) were observed to be sitting in the intercondylar notch (16 cases) or located between the femoral condyle and tibial plateau (5 cases). On sequential sagittal MR images, (c) the bow-tie appearance of the body of the meniscus was not seen (13 cases); (d) the bow-tie appearance of the displaced inner fragment was seen at the intercondylar notch level (9 cases); (e) 'double posterior cruciate ligament' sign was presented (7 cases). Associated joint abnormalities included anterior cruciate ligament tears(11), contralateral meniscal tears(11), posterior cruciate ligament tears(3), medial collateral ligament tears(3), osteoarthritis(1), and Baker's cyst(1). Awareness of these characteristic MR images(a-e) may increase the sensitivity of MR imaging in the diagnosis of displaced bucket-handle tears, and the MRI may be helpful to correctly characterize the displaced fragment and patterns of associated injury, providing arthroscopists a guide to appropriate surgical plans

  11. Injection method of barrier bucket supported by off-aligned electron cooling for CRing of HIAF

    Science.gov (United States)

    Shen, Guo-Dong; Yang, Jian-Cheng; Xia, Jia-Wen; Mao, Li-Jun; Yin, Da-Yu; Chai, Wei-Ping; Shi, Jian; Sheng, Li-Na; Smirnov, A.; Wu, Bo; Zhao, He

    2016-08-01

    A new accelerator complex, HIAF (the High Intensity Heavy Ion Accelerator Facility), has been approved in China. It is designed to provide intense primary and radioactive ion beams for research in high energy density physics, nuclear physics, atomic physics as well as other applications. In order to achieve a high intensity of up to 5×1011 ppp 238U34+, the Compression Ring (CRing) needs to stack more than 5 bunches transferred from the Booster Ring (BRing). However, the normal bucket to bucket injection scheme can only achieve an intensity gain of 2, so an injection method, fixed barrier bucket (BB) supported by electron cooling, is proposed. To suppress the severe space charge effect during the stacking process, off-alignment is adopted in the cooler to control the transverse emittance. In this paper, simulation and optimization with the BETACOOL program are presented. Supported by New Interdisciplinary and Advanced Pilot Fund of Chinese Academy of Sciences

  12. Injection method of barrier bucket supported by misaligned electron cooling for CRing

    CERN Document Server

    Shen, Guo-Dong; Xia, Jia-Wen; Mao, Li-Jun; Yin, Da-Yu; Chai, Wei-Ping; Shi, Jian; Sheng, Li-Na; Smirnov, A; Wu, Bo; Zhao, He

    2016-01-01

    A new accelerator complex HIAF (the High Intensity Heavy Ion Accelerator Facility) is approved in China. It is designed to provide intense primary and radioactive ion beams for researches in high energy density physics, nuclear physics, atomic physics as well as other applications. In order to achieve a high intensity up to 5e11ppp 238U34+, CRing needs to stack more than 5 bunches transferred from BRing. However, the normal bucket to bucket injection scheme can only achieve an intensity gain of 2, so an injection method, fixed barrier bucket (BB) supported by electron cooling, is proposed. To suppress the severe space charge effect during the stacking process, misalignment is adopted in the cooler to control the transverse emittance. In this paper the simulation and optimization with BETACOOL program are presented.

  13. Operation of class O bucket wheel excavators from the TAKRAF heavy machine engineering complex

    Energy Technology Data Exchange (ETDEWEB)

    Reinel, H.

    1981-03-01

    This paper presents main technical specifications and the general design of the smallest types of TAKRAF bucket wheel excavators. Class O is comprised of the 5 excavators SRs 65, SRs 130, SRs 220, SRs 240 and SRs 280 with a theoretical production of between 200 and 1150 M/sup 3//h. The excavators have an analog basic design with variations concerning power and operation conditions. Excavator SRs 220 is designed for winning brown coal with high strength, the SRs 240 is to be used in soils with high digging resistance such as clay. The other excavator types are especially suitable for work in bulk storage facilities of coal power stations and in ports. Technical specifications of the machines include: equipment weight of between 45 to 155 t, bucket wheel diameter ranging between 3 and 5.1 m, and bucket wheel drive of between 30 and 160 kW. Seventy five excavators have been produced. (In German)

  14. Criticality analysis of a mop bucket containing UO2F2 solution

    International Nuclear Information System (INIS)

    Open containers are frequently used for housekeeping purposes in fissile material process areas containing a variety of aqueous solutions. Solutions are a significant criticality safety concern since a simple review of history shows that the majority of the criticality accidents to date have occurred with materials of this nature. During an in-class discussion, the question arose in regard to how and what safety analyses have been performed for mop buckets used for housekeeping purposes at uranium processing plants. After a review of the open literature revealed no published criticality safety studies that address mop buckets, the first author of this paper decided to perform a mop bucket study as his class project in the criticality safety course being taught by the second author

  15. The Application of High-temperature Strain Gauges to the Measurements of Vibratory Stresses in Gas-turbine Buckets

    Science.gov (United States)

    Kemp, R H; Morgan, W C; Manson, S S

    1947-01-01

    The feasibility of measuring the vibration in the buckets of a gas turbine under service conditions of speed and temperature was determined by use of a high temperature wire strain gauge cemented to a modified supercharger turbine bucket. A high-temperature wire strain gauge and the auxiliary mechanical and electrical equipment developed for the investigation are described.

  16. Metadata and Buckets in the Smart Object, Dumb Archive (SODA) Model

    Science.gov (United States)

    Nelson, Michael L.; Maly, Kurt; Croom, Delwin R., Jr.; Robbins, Steven W.

    2004-01-01

    We present the Smart Object, Dumb Archive (SODA) model for digital libraries (DLs), and discuss the role of metadata in SODA. The premise of the SODA model is to "push down" many of the functionalities generally associated with archives into the data objects themselves. Thus the data objects become "smarter", and the archives "dumber". In the SODA model, archives become primarily set managers, and the objects themselves negotiate and handle presentation, enforce terms and conditions, and perform data content management. Buckets are our implementation of smart objects, and da is our reference implementation for dumb archives. We also present our approach to metadata translation for buckets.

  17. Painful locking of the knee due to bucket handle tear of mediopatellar plica

    Institute of Scientific and Technical Information of China (English)

    HE Rui; YANG Liu; GUO Lin

    2011-01-01

    A case of swelling and anterior painful knee due to tear of mediopatellar plica is reported. The patient also felt clunk of the patellofemoral joint and knee locking. Under arthroscopic examination, a thick and fibrous plica was found medial to patellar, and a bucket tear along the plica fi.om medial patellar retinaculum to infrapatellar fat pad. Polarized microscopic examination showed collagen fiber fragment and loss of light reflecting property. Neuroimmunohistology suggested up-regulation of synovial plica innervation in the area around the crack. This may be related to the pain. The bucket tear of mediopatellar plicacaused pain and lock of knee are more common than previously reported.

  18. Turbine bucket for use in gas turbine engines and methods for fabricating the same

    Science.gov (United States)

    Garcia-Crespo, Andres

    2014-06-03

    A turbine bucket for use with a turbine engine. The turbine bucket includes an airfoil that extends between a root end and a tip end. The airfoil includes an outer wall that defines a cavity that extends from the root end to the tip end. The outer wall includes a first ceramic matrix composite (CMC) substrate that extends a first distance from the root end to the tip end. An inner wall is positioned within the cavity. The inner wall includes a second CMC substrate that extends a second distance from the root end towards the tip end that is different than the first distance.

  19. Possibilities for determining operation time of a bucket wheel excavator with non-extendable bucket wheel boom. Odredivanje vremena kopanja rotornog bagera bez izvlacenja katarke rotora

    Energy Technology Data Exchange (ETDEWEB)

    Popovic, N.; Komljenovic, D. (Rudarsko-Geoloski Fakultet, Tuzla (Yugoslavia))

    1989-01-01

    Provides a detailed kinematic analysis of the digging process by a bucket wheel excavator on a surface mine bench. The analysis takes horizontal, vertical and combined digging into account. The study determines real operation time required for excavation of individual surface mine blocks according to pre-set automated excavation programs. Various equations used in the analysis are given. Advantages of programmed automated excavator operation compared to manual operator guidance are pointed out. 9 refs.

  20. The tale of two buckets and associated containers: impact on aedes albopictus oviposition

    Science.gov (United States)

    Aedes albopictus is an invasive species. Its oviposition behavior is the subject of several projects in our research unit. The main emphasis of this presentation is a study which utilizes two five gallon buckets, one heated and one with ambient temperature. The heat is provided by an aquarium hea...

  1. Consideration on the 1 ton bucket elevator installed under water of pool in IMEF

    International Nuclear Information System (INIS)

    The bucket elevator which can transfer examination capsule or fuel from pool to hot cell is installed under water of pool (3x6x10 m) in IMEF. A allowable load is 1 ton and the dimension of bucket is 25x25x150 cm. The upper and lower sides motion of bucket have about 63 degrees inclined duties with a chain driving system. A specialized made chain catches a rug of bucket with a roller sliding way between right and left guide rails which are fixed at inner of a square tube and moves to an upper and lower sides and it is made so that it is operated by sprocket wheel installed in a hot cell working table below. Sprocket wheel is executed to two steps of driving shaft by reduction geared motor installed at right outside of M1 hot cell. As for the starting operation, it is executed by push an operation button on a operating panel located at front of M1 hot cell

  2. Multi-bucket optimization for integrated planning and scheduling in the perishable dairy supply chain

    NARCIS (Netherlands)

    Sel, C.; Bilgen, B.; Bloemhof, J.M.; Vorst, van der J.G.A.J.

    2015-01-01

    This paper considers a dairy industry problem on integrated planning and scheduling of set yoghurt production. A mixed integer linear programming formulation is introduced to integrate tactical and operational decisions and a heuristic approach is proposed to decompose time buckets of the decisions.

  3. The Bucket System – A computer mediated signaling system for group improvisation

    DEFF Research Database (Denmark)

    Dahlstedt, Palle; Nilsson, Per Anders; Robair, Gino

    2015-01-01

    The Bucket System is a new system for computer-mediated ensemble improvisation, designed by improvisers for improvisers. Coming from a tradition of structured free ensemble improvisation practices (comprovisation), influenced by post-WW2 experimental music practices, it is a signaling system...

  4. Flow simulation of a Pelton bucket using finite volume particle method

    International Nuclear Information System (INIS)

    The objective of the present paper is to perform an accurate numerical simulation of the high-speed water jet impinging on a Pelton bucket. To reach this goal, the Finite Volume Particle Method (FVPM) is used to discretize the governing equations. FVPM is an arbitrary Lagrangian-Eulerian method, which combines attractive features of Smoothed Particle Hydrodynamics and conventional mesh-based Finite Volume Method. This method is able to satisfy free surface and no-slip wall boundary conditions precisely. The fluid flow is assumed weakly compressible and the wall boundary is represented by one layer of particles located on the bucket surface. In the present study, the simulations of the flow in a stationary bucket are investigated for three different impinging angles: 72°, 90° and 108°. The particles resolution is first validated by a convergence study. Then, the FVPM results are validated with available experimental data and conventional grid-based Volume Of Fluid simulations. It is shown that the wall pressure field is in good agreement with the experimental and numerical data. Finally, the torque evolution and water sheet location are presented for a simulation of five rotating Pelton buckets

  5. Vibration Theory, Vol. 1B

    DEFF Research Database (Denmark)

    Asmussen, J. C.; Nielsen, Søren R. K.

    The present collection of MATLAB exercises has been published as a supplement to the textbook, Svingningsteori, Bind 1 and the collection of exercises in Vibration theory, Vol. 1A, Solved Problems. Throughout the exercise references are made to these books. The purpose of the MATLAB exercises is to...... give a better understanding of the physical problems in linear vibration theory and to surpress the mathematical analysis used to solve the problems. For this purpose the MATLAB environment is excellent....

  6. SABRE: A Sensitive Attribute Bucketization and REdistribution framework for t-closeness

    KAUST Repository

    Cao, Jianneng

    2010-05-19

    Today, the publication of microdata poses a privacy threat: anonymous personal records can be re-identified using third data sources. Past research has tried to develop a concept of privacy guarantee that an anonymized data set should satisfy before publication, culminating in the notion of t-closeness. To satisfy t-closeness, the records in a data set need to be grouped into Equivalence Classes (ECs), such that each EC contains records of indistinguishable quasi-identifier values, and its local distribution of sensitive attribute (SA) values conforms to the global table distribution of SA values. However, despite this progress, previous research has not offered an anonymization algorithm tailored for t-closeness. In this paper, we cover this gap with SABRE, a SA Bucketization and REdistribution framework for t-closeness. SABRE first greedily partitions a table into buckets of similar SA values and then redistributes the tuples of each bucket into dynamically determined ECs. This approach is facilitated by a property of the Earth Mover\\'s Distance (EMD) that we employ as a measure of distribution closeness: If the tuples in an EC are picked proportionally to the sizes of the buckets they hail from, then the EMD of that EC is tightly upper-bounded using localized upper bounds derived for each bucket. We prove that if the t-closeness constraint is properly obeyed during partitioning, then it is obeyed by the derived ECs too. We develop two instantiations of SABRE and extend it to a streaming environment. Our extensive experimental evaluation demonstrates that SABRE achieves information quality superior to schemes that merely applied algorithms tailored for other models to t-closeness, and can be much faster as well. © 2010 Springer-Verlag.

  7. Hepatitis Foundation International

    Science.gov (United States)

    ... partner – it's your best friend. Welcome. The Hepatitis Foundation International (HFI) is a 501 (c) 3 non- ... and cures is your participation in the Hepatitis Foundation International Registry. Whether you are affected, a caregiver, ...

  8. Cooley's Anemia Foundation

    Science.gov (United States)

    Cooley's Anemia Foundation Leading the Fight against Thalassemia About Us Mission/Purpose History About Thomas Benton Cooley Medical Research ... Gabriella was diagnosed with thalassemia, and the Cooley’s Anemia Foundation continues to play an almost-daily role ...

  9. Lupus Foundation of America

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    ... You. Learn More About the Lupus Foundation of America We are devoted to solving the mystery of ... Support for Lupus Research The Lupus Foundation of America applauds the U.S. Senate Appropriations Committee for voting ...

  10. Sarcoma Foundation of America

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    ... Mission The mission of the Sarcoma Foundation of America (SFA) is to advocate for sarcoma patients by ... behalf of everyone at the Sarcoma Foundation of America (SFA),THANK YOU! The Celebration of Life drew ...

  11. Pulmonary Fibrosis Foundation

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    ... most current news and updates from the Pulmonary Fibrosis Foundation. Life with PF Education & Support About PF ... LEARN MORE We Imagine a World Without Pulmonary Fibrosis The Pulmonary Fibrosis Foundation mobilizes people and resources ...

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    Science.gov (United States)

    ... the disease. Learn More A New Home for Parkinson's Science An open access journal, enabling professionals and ... Contact the HelpLine Parkinson's News Upcoming Events National Parkinson Foundation (NPF) and the Parkinson's Disease Foundation (PDF) ...

  17. Multiple Myeloma Research Foundation

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  18. Toxicology Education Foundation

    Science.gov (United States)

    ... bodies and our world. Welcome to the Toxicology Education Foundation! Our mission is to enhance public understanding ... TEF In the Classroom Our Goal The Toxicology Education Foundation seeks to help build the public's understanding ...

  19. Interaction Design: Foundations, Experiments

    OpenAIRE

    Hallnäs, Lars; Redström, Johan

    2006-01-01

    Interaction Design: Foundations, Experiments is the result of a series of projects, experiments and curricula aimed at investigating the foundations of interaction design in particular and design research in general. The first part of the book - Foundations - deals with foundational theoretical issues in interaction design. An analysis of two categorical mistakes -the empirical and interactive fallacies- forms a background to a discussion of interaction design as act design and of computa...

  20. Reconstruction and modernization of bucket wheel drive and bucket wheel of large bucket wheel excavator SRs 6300 at Nochten opencast mine; Rekonstruktion und Modernisierung des Schaufelradantriebes und des Schaufelrades vom Grossschaufelradbagger SRS 6300 im Tagebau Nochten

    Energy Technology Data Exchange (ETDEWEB)

    Arnold, E. [LAUBAG, Senftenberg (Germany); Roessel, W. [MAN TAKRAF Foerdertechnik GmbH, Lauchhammer (Germany)

    1996-03-01

    For a bucket wheel driving power of 2130 kW a completely new drive design was developed and put into service. Instead of the previously used 3 secondary gears and the gear set, the new drive consists of one compact unit arranged in a gear case. In this way significant advantages are achieved as regards dead weight, maintenance work and noise level. Together with the new drive design, a new single-web bucket wheel was also constructed, a design which ensures better protection against wear and thus simplifies maintenance considerably. By integration of a fourth drive unit the new drive design allows for a further increase of the driving power of the drive system and it can therefore also be installed on machines with a higher required output. (orig.) [Deutsch] Fuer eine Schaufelradantriebsleistung von 2130 kW wurde eine voellig neue Antriebskonzeption entwickelt und zum Einsatz gebracht. Anstelle der bisher eingesetzten 3 Satellitengetriebe und des Sammelgetriebes besteht der neue Antrieb aus einer in einem Gehaeuse angeordneten kompakten Einheit. Dadurch ergeben sich wesentliche Vorteile in bezug auf Eigenmasse, Instandhaltungsaufwendungen und Schalleistungspegel. Parallel zum neuen Antriebskonzept wurde ein neues Schaufelrad in Einstegausfuehrung konstruiert, wodurch sich der Verschleissschutz besser gestalten liess und damit die Wartung sich bedeutend vereinfacht. Das vorhandene Antriebskonzept laesst durch die Integration einer vierten Antriebseinheit eine weitere Leistungserhoehung des Antriebssystems zu und kann damit auch an Geraeten mit hoeherem Leistungsbedarf eingesetzt werden. (orig.)

  1. The Krupp Truck Bucket Wheel Excavator for continuous mining and intermittent transport by means of heavy-duty trucks; Der Krupp Truck Bucket Wheel Excavator zur kontinuierlichen Gewinnung und diskontinuierlichen Abfoerderung mittels SKW

    Energy Technology Data Exchange (ETDEWEB)

    Jahn, D.; Schlecht, B. [Krupp Foerdertechnik GmbH, Luebeck (Germany)

    1997-09-01

    The obvious need to extend the scope of application of the technology of continuously digging bucket wheel excavators so that intermittently operating trucks instead of continuously transporting belt conveyor systems can also be used in combination with bucket wheel excavators led to the development of the Krupp Truck Bucket Wheel Excavator. This innovation in the field of bucket wheel excavator construction is an ideal combination of the advantages of continuous digging (stripping of hard material with slight expenditure of energy and without blasting) with the advantages of intermittent transport (great mobility of trucks). By means of a modified bucket wheel excavator with an hourly output of 400 m{sup 3} of the well-known series of models of standard and compact bucket wheel excavators constructed by Krupp, the applicability of this principle is established by technical tests. The main technical innovations of this bucket wheel excavator and the tests carried out so far at the construction works are explained in detail in the present paper. Furthermore, the entire newly developed series of models of the Krupp Truck Bucket Wheel Excavators with hourly outputs of 500 m{sup 3} to 5000 m{sup 3} is described in brief. A smaller machine of this series, a KTB 400, was reequipped and is at present in service at the Profen opencast mine of the MIBRAG. Taking the findings obtained so far as a basis, it is planned to construct a Krupp Truck Bucket Wheel Excavator KTB 500, which as from 1998 will be available for service to parties interested all over the world. The already foreseeable increase in the efficiency of mining operations as a result of the combination of the bucket wheel excavator technology with the mobile truck system will be discussed in a subsequent paper, which will appear shortly and in which examples of the application of this principle will be cited. (orig.) [Deutsch] Der festzustellende Bedarf, den Einsatzbereich der kontinuierlich gewinnenden

  2. Painful locking of the knee due to bucket handle tear of

    Directory of Open Access Journals (Sweden)

    HE Rui

    2011-04-01

    Full Text Available 【Abstract】 A case of swelling and anterior painful knee due to tear of mediopatellar plica is reported. The patient also felt clunk of the patellofemoral joint and knee locking. Under arthroscopic examination, a thick and fibrous plica was found medial to patellar, and a bucket tear along the plica from medial patellar retinaculum to infrapatellar fat pad. Polarized microscopic examination showed collagen fiber fragment and loss of light reflecting property. Neuroimmunohistology suggested up-regulation of synovial plica innervation in the area around the crack. This may be related to the pain. The bucket tear of mediopatellar plicacaused pain and lock of knee are more common than previously reported. Key words: Knee injuries; Arthroscopy; Patellofemoral joint

  3. SRs 320 - a new machine in the bucket wheel excavator series

    Energy Technology Data Exchange (ETDEWEB)

    Reinel, H.

    1987-05-01

    Design and technical specifications are presented of the SRs 320, produced by TAKRAF. This excavator type was needed by brown coal surface mines in the GDR; the first machine went into operation at the end of 1986. The excavator weighs 350 t, has 745 to 900 kW motor power, cutting height of 15 m, bucket wheel diameter of 6.5 m and a theoretical cutting capacity of 2300 m/sup 3//h. Various schemes and diagrams of the design are provided. Further details discussed include excavator movements, reach of booms, cutting performance, the driver stand, energy supply system, etc. The excavator is part of the TAKRAF SRs 65 to SRs 403 small excavator series with a cutting capacity ranging between 200 and 3,000 m/sup 3//h. The excavator series is technologically adapted for operating in combination with TAKRAF shiftable belt conveyors, mobile transfer conveyors and bucket wheel excavators. 1 ref.

  4. Comparison of Tipping-Bucket Raingauge Record Processing at Various Workplaces

    Czech Academy of Sciences Publication Activity Database

    Kvičera, V.; Fišer, Ondřej; Riva, C.; Sharma, P.

    Noordwijk: European space agency, 2005, s. 1-4. [COST 280 Final Workshop. Prague (CZ), 06.06.2005-07.06.2005] R&D Projects: GA MŠk OC 280.002 Institutional research plan: CEZ:AV0Z30420517 Keywords : Rain data processing * Tipping bucket rain gauges Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering http://www.cost280.rl.ac.uk

  5. Transmissibility of the Ice Bucket Challenge among globally influential celebrities: retrospective cohort study

    OpenAIRE

    Ni, Michael Y.; Chan, Brandford H. Y.; Leung, Gabriel M; Lau, Eric H. Y.; Pang, Herbert

    2014-01-01

    Objectives To estimate the transmissibility of the Ice Bucket Challenge among globally influential celebrities and to identify associated risk factors. Design Retrospective cohort study. Setting Social media (YouTube, Facebook, Twitter, Instagram). Participants David Beckham, Cristiano Ronaldo, Benedict Cumberbatch, Stephen Hawking, Mark Zuckerberg, Oprah Winfrey, Homer Simpson, and Kermit the Frog were defined as index cases. We included contacts up to the fifth generation seeded from each i...

  6. Application of the bucket wheel excavators to the Afsin-Elbistan lignites of Turkey

    Energy Technology Data Exchange (ETDEWEB)

    Muftuoglu, Y.V.; Scoble, M.J.; Solmaz, O.M.

    1987-06-01

    The paper considers surface mining in the Afsin-Elbistan basin in Turkey. This basin contains nearly half of Turkey's lignite potential. The Kisalakoy mine has been the first one developed. Topics covered are: geology of the mining field; hydrology and dewatering systems at the Kislakloy mine; mining method and equipment selection in particular bucket wheel excavators; operational problems due to hard rock zones and sticky clays; and slope stability. 2 refs.

  7. Data-dependent bucketing improves reference-free compression of sequencing reads

    OpenAIRE

    Patro, Rob; Kingsford, Carl

    2015-01-01

    Motivation: The storage and transmission of high-throughput sequencing data consumes significant resources. As our capacity to produce such data continues to increase, this burden will only grow. One approach to reduce storage and transmission requirements is to compress this sequencing data. Results: We present a novel technique to boost the compression of sequencing that is based on the concept of bucketing similar reads so that they appear nearby in the file. We demonstrate that, by adopti...

  8. Prisen Årets studenter start-up går til Drop Bucket

    DEFF Research Database (Denmark)

    Lassen, Lisbeth

    2015-01-01

    DTU’s ny pris for årets mest innovative studerende blev ved universitetets årsfest givet til Heiða Gunnarsdóttir Nolsøe og Marie Stampe Berggreen, som står bag virksomheden Drop Bucket. Koncerndirektør for innovation og entreprenørskab, Marianne Thellersen, overakte prisen til de to innovatører s...

  9. Bucket-handle tear of a discoid lateral meniscus in a 6-year-old girl

    OpenAIRE

    Yalcin, Nadir; Bektaser, Bulent; Cicekli, Ozgur; Dogan, Metin

    2004-01-01

    A six-year-old girl was examined upon development of pain, swelling, and locking in her right knee after a considerable period of discomfort and popping sensation. She had no history of trauma. Magnetic resonance imaging showed a discoid lateral meniscus, filling the entire lateral plateau and exhibiting signs of degeneration. On arthroscopic examination, a bucket-handle tear of the discoid lateral meniscus was noted and the patient was treated with arthroscopic subtotal meniscectomy. During ...

  10. Analysis of in-situ renewal technology for the backhoe bucket bores

    International Nuclear Information System (INIS)

    The overall aim of this article is to outline the progress of the research on how to develop an economically and scientifically justified backhoe buckets boreholes renewal technology by using mobile on-site technological equipment. Today the new mobile (in-situ) repair technologies are extensively used for the specialized equipment and machinery repairs. This repair technology is deployed directly on the damaged product: repair equipment is installed by using specialized centering devices. The bucket bores central axes are used as a reference base and damaged layer of material is removed mechanically applying turning operation. Subsequently the renewable surface is covered by new material layer by means of regular MIG/MAG welding. The last technological operation is final turning to the nominal diameter. Outlined renewal technology should meet high expectations – this necessitates in-depth and systematic study of pins and bores which are the most repaired objects of shovel bucket excavators. Therefore, research on established accuracy and technical requirements, both for the repaired unit and technological equipment in line with in-situ repair technology specifics, has been done. It was supported by impact analysis of the technological regimes to surface integrity with ambition to provide practical recommendations for the optimal choice of the technological regimes. Key words: in-situ repair technology, surface integrity, technological parameters

  11. Numerical analysis of non-stationary free surface flow in a Pelton bucket

    Energy Technology Data Exchange (ETDEWEB)

    Hana, Morten

    1999-07-01

    Computation and analysis of flow in Pelton buckets have been carried out. First a graphical method is investigated and partially improved. In order to decide whether to improve the method further or disregard it in favour of commercial computational fluid dynamics (CFD) codes, a study on numerical methods for free surface flow was carried out. This part of this work concentrates on the theoretical background for different numerical methods, and describes some practical considerations. Although small programs were created based on the literature survey, but only one reported herein, it was soon found that commonly available numerical codes were favourable in use. A code, RIPPLE, was acquired to study the Volume of Fluid (VOF) method in detail. The commercial codes used were Flow-3D and CFX-4. These programs were used in three different cases. First, a simplified 2-dimensional case was verified experimentally. Next, a 3-dimensional fixed jet calculation was carried out. Finally, numerical calculations with relative motion between the jet and buckets were carried out with CFX-4. The conclusion is that commercial CFD codes can replace the graphical method. But careful implementation is needed in order to resolve the special features of Pelton turbines, which are the free surface, the complex geometry and the relative motion between the jet and the bucket.

  12. RF empty bucket channelling combined with a betatron core to improve slow extraction in medical synchrotrons

    CERN Document Server

    Crescenti, M

    1998-01-01

    The uniformity of a slow-extracted beam from a synchrotron is degraded by ripples from the power converters of the magnetic elements. This effect can be reduced by making the beam particles cross more quickly from the stable to the unstable region. Among the various methods that have been proposed for this purpose, RF bucket channelling seems to be a good candidate for compensating low frequency ripples in spills of the order of one second. The method is based on the technique of RF phase displacement acceleration. In the configuration studied, a coasting beam is accelerated slowly into a third-order resonance by a betatron core. The acceleration rate set by the betatron core determines the spill length. Empty buckets are then created at the resonance frequency and adjusted with a phase angle that would decelerate any trapped beam by an equal and opposite amount. The main RF system can be used for this purpose. The empty buckets cause an obstruction in phase space and the beam particles are forced to channel ...

  13. Design and Development of Electro-Mechanical Twins Tipping Buckets Runoff-Meter

    Directory of Open Access Journals (Sweden)

    Olotu Yahaya

    2014-07-01

    Full Text Available Electro-mechanical tipping bucket runoff-meter was designed and developed to measure surface runoff water using locally-sourced components. The instrument consists of metallic-fabricated runoff plot area of 2 m 2 , depth 0.25 m and metal gauge of 3mm. The tipping operation was initiated by arranging the sensitive electro-mechanical components such digital micro-switch (SW1,SW2, SW3 and SW4, pair of open/close circuit breakers (No,Nc, electronic speed gear and circular rotating disc to a pair of twins buckets of runoff volume 0.141 liter capacity per bucket which corresponds to 0.25 mm runoff depth. The whole arrangement was powered by a 12V by 75 AH battery and the tipping processes was being recorded by the electro-mechanical data logger. The instrument has a measuring accuracy of ±0.001 liter per tip. It was calibrated to measure minimum and maximum runoff volume from 0.14l to 200 liters, these values correspond to 0.25 mm and 800 mm runoff depths respectively. Therefore, precise results obtained using the instrument could be used to establish strong database for measuring and storing accurate surface runoff data which in turn could be applied for hydrological modeling for sustainable water resources management and design of hydraulic structures

  14. RED-DTB: A Dual Token Bucket Based Queue Management Algorithm

    Institute of Scientific and Technical Information of China (English)

    YinJian-hua; CaoYang; LingJun; HuangTian-xi

    2003-01-01

    Improving the Quality of Service (QoS) of Internet traffic is widely recognized as a critical issue for the next-generation networks. In this paper,we present a new algorithm for the active queue management, namely RED-DTB. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (Random Early Detection) algorithm, the RED-DTB mechanism can be deployed to actively respond to the gateway congestion, keep the gateway in a healthy state, and protect the fragile flows from being stolen bandwidth by greedy ones. The algorithm is based on the so-called Dual Token Bucket (DTB) pattern. That is, on the one hand, every flow is rate-limited by its own token bucket, to ensure that it can not consume more than its fair share of bandwidth; On the other hand,to make some compensations to less aggressive flows, such as connections with larger round trip time or smaller sending window, and to gain a relatively higher system utilization coefficient, all flows, depending on their individual behavior, may have a chance to fetch tokens from the public token bucket when they run out of their own share of tokens. The algorithm is analyzed and evaluated by simulations, and is proved to be effective in protecting the gateway buffer and controlling the fair allocation of bandwidth among flows.

  15. RED- DTB:A Dual Token Bucket Based Queue Management Algorithm

    Institute of Scientific and Technical Information of China (English)

    Yin Jian-hua; Cao Yang; Ling Jun; Huang Tian-xi

    2003-01-01

    Improving the Quality of Service (QoS) of Internet traffic is wide-ly recognized as a critical issue for the next-generation networks. In this paper,we present a new algorithm for the active queue management, namely RED-DTB. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (Random Early Detection) algorithm, the RED-DTB mechanism can be deployed to actively re-spond to the gateway congestion, keep the gateway in a healthy state, and pro-tect the fragile flows from being stolen band width by greedy ones. The algo-rithm is based on the so-called Dual Token Bucket (DTB) pattern. That is, onthe one hand, every flow is rate-limited by its own token bucket, to ensure thatit can not consume more than its fair share of bandwidth; On the other hand,to make some compensations to less aggressive flows, such as connections with larger round trip time or smaller sending window, and to gain a relatively high-er system utilization coefficient, all flows, depending on their individual behav-ior, may have a chance to fetch tokens from the public token bucket when theyrun out of their own share of tokens. The algorithm is analyzed and evaluatedby simulations, and is proved to be effective in protecting the gateway bufferand controlling the fair allocation of bandwidth among flows.

  16. The use of knowledge-based Genetic Algorithm for starting time optimisation in a lot-bucket MRP

    Science.gov (United States)

    Ridwan, Muhammad; Purnomo, Andi

    2016-01-01

    In production planning, Material Requirement Planning (MRP) is usually developed based on time-bucket system, a period in the MRP is representing the time and usually weekly. MRP has been successfully implemented in Make To Stock (MTS) manufacturing, where production activity must be started before customer demand is received. However, to be implemented successfully in Make To Order (MTO) manufacturing, a modification is required on the conventional MRP in order to make it in line with the real situation. In MTO manufacturing, delivery schedule to the customers is defined strictly and must be fulfilled in order to increase customer satisfaction. On the other hand, company prefers to keep constant number of workers, hence production lot size should be constant as well. Since a bucket in conventional MRP system is representing time and usually weekly, hence, strict delivery schedule could not be accommodated. Fortunately, there is a modified time-bucket MRP system, called as lot-bucket MRP system that proposed by Casimir in 1999. In the lot-bucket MRP system, a bucket is representing a lot, and the lot size is preferably constant. The time to finish every lot could be varying depends on due date of lot. Starting time of a lot must be determined so that every lot has reasonable production time. So far there is no formal method to determine optimum starting time in the lot-bucket MRP system. Trial and error process usually used for it but some time, it causes several lots have very short production time and the lot-bucket MRP would be infeasible to be executed. This paper presents the use of Genetic Algorithm (GA) for optimisation of starting time in a lot-bucket MRP system. Even though GA is well known as powerful searching algorithm, however, improvement is still required in order to increase possibility of GA in finding optimum solution in shorter time. A knowledge-based system has been embedded in the proposed GA as the improvement effort, and it is proven that the

  17. BrightFocus Foundation

    Science.gov (United States)

    ... size: A A Contrast En Español Donate BrightFocus Foundation Alzheimer’s Disease Research Macular Degeneration Research National Glaucoma ... Bovenkamp, Ph.D., Scientific Program Officer for BrightFocus Foundation, about the basic science and therapeutic research the ...

  18. Modelling Foundations and Applications

    DEFF Research Database (Denmark)

    This book constitutes the refereed proceedings of the 8th European Conference on Modelling Foundations and Applications, held in Kgs. Lyngby, Denmark, in July 2012. The 20 revised full foundations track papers and 10 revised full applications track papers presented were carefully reviewed and sel...

  19. Dallas's Nonprofit Foundation Founders.

    Science.gov (United States)

    Levin, Dan

    1979-01-01

    Describes the scandals that have destroyed the Foundation for Quality Education, the foundation the Dallas (Texas) school district created to raise money for the schools through real estate management and the marketing of school-system-developed curriculum materials. (Author/IRT)

  20. Foundations for Critical Thinking

    Science.gov (United States)

    Bers, Trudy; Chun, Marc; Daly, William T.; Harrington, Christine; Tobolowsky, Barbara F.

    2015-01-01

    "Foundations for Critical Thinking" explores the landscape of critical-thinking skill development and pedagogy through foundational chapters and institutional case studies involving a range of students in diverse settings. By establishing a link between active learning and improved critical thinking, this resource encourages all higher…

  1. First Yugoslav compact KSD 750,16/14 bucket wheel excavator. Prvi Jugoslovenski kompaktni rotorni bager KSD 750,16/14

    Energy Technology Data Exchange (ETDEWEB)

    Popovic, N.; Zivkovic, S.; Komljenovic, D. (Rudarsko-Geoloski Fakultet, Tuzla (Yugoslavia))

    1990-01-01

    Carries out cutting and excavation experiments in 5 different strata of overburden (sand and clay) in the Sikulje surface coal mine (Yugoslavia) for determining cutting forces and other design parameters of bucket wheel excavators. Required cutting forces for a bucket wheel excavator with a 1,500 m[sup 3]/h capacity varied between 30-50 kN/m for sand and 30-150 kN/m for marly clay. Initial values for design of a compact bucket wheel excavator for Yugoslav mining conditions are proposed: bucket wheel diameter of 8.4 m, bucket volume 0.75 m[sup 3], length of the wheel boom 17 m, power of bucket wheel electric drive 630 kW, excavator weight 650 t and cutting forces 90 kN/m. 6 refs.

  2. Soil-structure interaction Vol.3. Influence of ground water

    International Nuclear Information System (INIS)

    This study has been performed for the Nuclear Regulatory Commission (NRC) by the Structural Analysis Division of Brookhaven National Laboratory (BNL). The study was conducted during the fiscal year 1965 on the program entitled 'Benchmarking of Structural Engineering Problems' sponsored by NRC. The program considered three separate but complementary problems, each associated with the soil-structure interaction (551) phase of the seismic response analysis of nuclear plant facilities. The reports, all entitled Soil-Structure Interaction, are presented in three separate volumes, namely: Vol. 1 Influence of Layering by AJ Philippacopoulos, Vol. 2 Influence of Lift-Off by C.A. Miller, Vol. 3 Influence of Ground Water by C.J. Costantino. The two problems presented in Volumes 2 and 3 were conducted at the City University of New York (CUNY) under subcontract to BNL. This report, Volume 3 of the report, presents a summary of the first year's effort on the subject of the influence of foundation ground water on the SSI phenomenon. A finite element computer program was developed for the two-phased formulation of the combined soil-water problem. This formulation is based on the Biot dynamic equations of motion for both the solid and fluid phases of a typical soil. Frequency dependent interaction coefficients were generated for the two-dimensional plane problem of a rigid surface footing moving against a saturated linear soil. The results indicate that interaction coefficients are significantly modified as compared to the comparable values for a dry soil, particularly for the rocking mode of response. Calculations were made to study the impact of the modified interaction coefficients on the response of a typical nuclear reactor building. The amplification factors for a stick model placed atop a dry and saturated soil were computed. It was found that pore water caused the rocking response to decrease and translational response to increase over the frequency range of interest, as

  3. 基于牛顿切线法创建通风机扩散器导叶模型%Constructing the model of the entrance bucket of a fanning machine diffuser on the basis of newton tangent law

    Institute of Scientific and Technical Information of China (English)

    朱修传; 潘地林

    2011-01-01

    利用牛顿切线法快速、高精度地计算出通风机扩散器导叶圆弧的圆心角,通过VBA技术提供的求线段的向量角和极点坐标等方法求出圆弧圆心坐标和半径,再利用VBA中画圆弧的命令精确绘制导叶圆弧曲线.成功解决了在AutoCAD软件中高精度创建通风机扩散器导叶三维模型的困难.为通风机扩散器的虚拟设计及其内部流场数值分析奠定了基础.同时,也为AutoCAD软件提供了一种新的绘制圆弧的方法.%In order to improve the precision in constructing the model of the entrance bucket of a fanning machine diffuser in AutoCAD,Firstly,calculate the central angle of the arc of the entrance bucket based on Newton Tangent Law. Secondly,get the values coordinates of the center of the arc and the radius by applying the methods from VBA of getting the polar angle and the coordinates of the pole. Lastly,accurately draw the arc by employing the instructions of VBA. The suggested method successfully solve the difficulty in constructing 3D model of the entrance bucket in high accuracy in AutoCAD,and lays a foundation for the virtual design of the diffuser and the numerical analysis of the internal flow field. Simultaneously,it provides a new method of drawing arc for AutoCAD.

  4. Dimensioning working elements as a basis for design of bucket wheel excavators. Dimenzionisanje radnih organa kao osnova za konstruisanje rotornog bagera

    Energy Technology Data Exchange (ETDEWEB)

    Zivkovic, S.; Popovic, N.; Dizdarevic, S.; Komljenovic, D. (RO Rudnici Lignita Kreka, Tuzla (Yugoslavia))

    1989-01-01

    Analyzes suitability of bucket wheel excavators for operation in medium sized Yugoslav coal and ore surface mines with 2 to 5 Mt/a production. Studies showed that imported excavators are not appropriate for Yugoslav mining conditions and configuration in excavator-spreader technology. Dimensioning cutting elements of bucket wheel excavators, determining number of buckets, diameter of the bucket wheel and required power for efficient excavator operation is described. Analysis results are given in a number of formulae. Calculations are proposed for designing excavators capable of coping with the difficult working conditions of Yugoslav surface mines. 26 refs.

  5. Comparative study of a three-bucket Savonius rotor with a combined three-bucket Savonius-three-bladed Darrieus rotor

    Energy Technology Data Exchange (ETDEWEB)

    Gupta, R.; Biswas, A.; Sharma, K.K. [Department of Mechanical Engineering, National Institute of Technology (NIT), Silchar 788 010, Assam (India)

    2008-09-15

    The vertical axis wind turbines are simple in construction, self-starting, inexpensive and can accept wind from any direction without orientation. A combined Savonius-Darrieus type vertical axis wind rotor has got many advantages over individual Savonius or individual Darrieus wind rotor, such as better efficiency than Savonius rotor and high starting torque than Darrieus rotor. But works on the combined Savonius-Darrieus wind rotor are very scare. In view of the above, two types of models, one simple Savonius and the other combined Savonius-Darrieus wind rotors were designed and fabricated. The Savonius rotor was a three-bucket system having provisions for overlap variations. The Savonius-Darrieus rotor was a combination of three-bucket Savonius and three-bladed Darrieus rotors with the Savonius placed on top of the Darrieus rotor. The overlap variation was made in the upper part, i.e. the Savonius rotor only. These were tested in a subsonic wind tunnel available in the department. The various parameters namely, power coefficients and torque coefficients were calculated for both overlap and without overlap conditions. From the present investigation, it is seen that with the increase of overlap, the power coefficients start decreasing. The maximum power coefficient of 51% is obtained at no overlap condition. However, while comparing the power coefficients (C{sub p}) for simple Savonius-rotor with that of the combined configuration of Savonius-Darrieus rotor, it is observed that there is a definite improvement in the power coefficient for the combined Savonius-Darrieus rotor without overlap condition. Combined rotor without overlap condition provided an efficiency of 0.51, which is higher than the efficiency of the Savonius rotor at any overlap positions under the same test conditions. (author)

  6. Numerical simulation of installation process and uplift resistance for an integrated suction foundation in deep ocean

    Science.gov (United States)

    Li, Ying; Yang, Shu-geng; Yu, Shu-ming

    2016-03-01

    A concept design, named integrated suction foundation, is proposed for a tension leg platform (TLP) in deep ocean. The most important improvement in comparing with the traditional one is that a pressure-resistant storage module is designed. It utilizes the high hydrostatic pressure in deep ocean to drive water into the module to generate negative pressure for bucket suction. This work aims to further approve the feasibility of the concept design in the aspect of penetration installation and the uplift force in-place. Seepage is generated during suction penetration, and can have both positive and negative effects on penetration process. To study the effect of seepage on the penetration process of the integrated suction foundation, finite element analysis (FEA) is carried out in this work. In particular, an improved methodology to calculate the penetration resistance is proposed for the integrated suction foundation with respect to the reduction factor of penetration resistance. The maximum allowable negative pressure during suction penetration is calculated with the critical hydraulic gradient method through FEA. The simulation results of the penetration process show that the integrated suction foundation can be installed safely. Moreover, the uplift resistance of the integrated suction foundation is calculated and the feasibility of the integrated suction foundation working on-site is verified. In all, the analysis in this work further approves the feasibility of the integrated suction foundation for TLPs in deep ocean applications.

  7. Main: 1VOL [RPSD[Archive

    Lifescience Database Archive (English)

    Full Text Available 1VOL シロイヌナズナ Arabidopsis Arabidopsis thaliana (L.) Heynh. Transcription Initiation Factor ... ucture Of A Tfiib-Tbp-Tata-Element Ternary Complex Nature ... V. 377 119 1995 Transcription Initiation, Molecula ...

  8. New equipment for bucket chain replacement at Es 3750 and Es 3150 excavators built by the TAKRAF heavy engineering complex

    Energy Technology Data Exchange (ETDEWEB)

    Reinel, H.

    1981-04-01

    This paper presents specifications and details on the design of a rail track bound transportation and assembling unit, with which a complete bucket chain is carried from the maintenance station via the public rail network to bucket chain excavators in brown coal surface mines. Four rail carriages each transporting one quarter of a chain with 11 buckets make up the basic design of this system. One carriage (two articulated independent bogies) has a length of 32 m, a mass of 138 tons (with load) and a driving speed of 60 km/h. The carriage is called KEAT 3750 and was introduced in 1978 as a further development of the KEAT 3150 from 1974, which was capable of transporting one sixth of a chain. Advantages of the new KEAT 3750 compared to KEAT 3150 are higher capacity (transport of 11 buckets instead of 7), reduction of time required for excavator chain replacement, transport of larger buckets (3,750 l compared to 3,150 l each), lower maintenance expenditures and rationalized design. The transportation unit proved to be in good driving condition during various test runs on the railway network. (1 ref.)

  9. Morris Animal Foundation

    Science.gov (United States)

    ... the transmission of serious illnesses. Read more » Morris Animal Foundation Receives $750,000 Grant for Cancer Studies. ... Give Partners Become a Partner Meet Our Partners Animal Lovers Our Work Ways to Give Pet Health ...

  10. Mesothelioma Applied Research Foundation

    Science.gov (United States)

    ... Percentage Donations Tribute Wall Other Giving/Fundraising Opportunities Bitcoin Donation Form FAQs Help us raise awareness and ... Percentage Donations Tribute Wall Other Giving/Fundraising Opportunities Bitcoin Donation Form FAQs © 2013 Mesothelioma Applied Research Foundation, ...

  11. Taxation of Foreign Foundations

    DEFF Research Database (Denmark)

    Werlauff, Erik

    This article analyses why it is necessary to consider European law when national tax law is to test whether a foundation (i.e., an independent institution) domiciled in another EU/EEA country can be considered as an independent tax subject. In Denmark the qualification for tax purposes of a foreign...... foundation has so far been decided on the basis purely of national tax law. This article argues that it is necessary to consider European law in the testing because it creates a restriction on the freedom of establishment and capital movement if the foundation is not approved as the ‘beneficial owner’ of the...... income received by the foundation. Such restriction must be able to be justified on the grounds of compelling reasons, suitability and proportionality....

  12. Pediatric Brain Tumor Foundation

    Science.gov (United States)

    ... you insights into your child's treatment. LEARN MORE Brain tumors and their treatment can be deadly so ... Michigan event celebrates 25 years Read more >> Pediatric Brain Tumor Foundation 302 Ridgefield Court, Asheville, NC 28806 ...

  13. Children's Cardiomyopathy Foundation

    Science.gov (United States)

    Search The Children's Cardiomyopathy Foundation (CCF) is a national, non-profit organization focused on pediatric cardiomyopathy, a chronic disease of the heart muscle. CCF is dedicated to accelerating the search for ...

  14. Moebius Syndrome Foundation

    Science.gov (United States)

    ... FRAME video on Moebius syndrome The Moebius Syndrome Foundation is excited to announce the premiere of the FRAME video, produced by Rick Guidotti and his non-profit organization, Positive Exposure! FRAME is a web-based ...

  15. Melanoma International Foundation

    Science.gov (United States)

    ... 501(c)(3) charity, also registered as a non-profit charity in the state of Pennsylvania, certificate #29498 © 2013 Melanoma International Foundation. All Rights Reserved. Privacy Policy | Terms of Use ...

  16. The foundations of statistics

    CERN Document Server

    Savage, Leonard J

    1972-01-01

    Classic analysis of the foundations of statistics and development of personal probability, one of the greatest controversies in modern statistical thought. Revised edition. Calculus, probability, statistics, and Boolean algebra are recommended.

  17. Foundation for Sarcoidosis Research

    Science.gov (United States)

    ... Clinical Trials Fail: FSR’s New Initiative to Bridge Gap between Industry Leaders, Researchers, and Patients Guest post ... 1 2 3 … 10 Next → Foundation for Sarcoidosis Research 1820 W. Webster Ave Suite 304 Chicago, Illinois ...

  18. International OCD Foundation

    Science.gov (United States)

    ... and productive lives. Join Donate Volunteer Events International OCD Foundation Our mission is to help all individuals ... to the IOCDF. Learn More Order a Bouquet OCD Awareness Week #OCDweek International OCD Awareness Week is ...

  19. National Ataxia Foundation

    Science.gov (United States)

    ... Facebook Page - Twitter - YouTube Giving a talk on Ataxia? - Ataxia Presentation Thank You To Our Partners Donate Now! Welcome to the National Ataxia Foundation International Ataxia Awareness Day (IAAD) The "International Ataxia Awareness Day" ...

  20. National Fragile X Foundation

    Science.gov (United States)

    ... Anthology Advocacy National Fragile X Foundation Advocacy Day STAR: Local Advocacy Agenda and Accomplishments Community Events International ... Making Sense of the Alphabet Soup Teaching Your Child to Ask for Something Behavior and Fragile X ...

  1. Hepatitis B Foundation

    Science.gov (United States)

    ... worldwide 2 Billion People have been infected with Hepatitis B Worldwide The Hepatitis B Foundation is working ... of people living with hepatitis B. Learn About Hepatitis B in 10 Other Languages . Resource Video See ...

  2. National Reye's Syndrome Foundation

    Science.gov (United States)

    ... we need your help... Learn More Share: View National Reye's Syndrome Foundation's LinkedIn profile Spread Awareness with the Kids & Aspirin Don't Mix car magnet ribbon. Get News & Updates: SignUp to get ...

  3. National Psoriasis Foundation

    Science.gov (United States)

    ... Tips" to find out more! Email * Zipcode National Psoriasis Foundation provides you with the help you need to best manage your psoriasis or psoriatic arthritis, while promoting research to find ...

  4. Foundations of measurement

    CERN Document Server

    Suppes, Patrick

    1989-01-01

    Foundations of Measurement offers the most coherently organized treatment of the topics and issues central to measurement. Much of the research involved has been scattered over several decades and a multitude of journals--available in many instances only to specialties. With the publication of Volumes two and three of this important work, Foundations of Measurement is the most comprehensive presentation in the area of measurement.

  5. Foundational aspects of security

    DEFF Research Database (Denmark)

    Chatzikokolakis, Konstantinos; Mödersheim, Sebastian Alexander; Palamidessi, Catuscia;

    2014-01-01

    This Special Issue of the Journal of Computer Security focuses on foundational aspects of security, which in recent years have helped change much of the way we think about and approach system security.......This Special Issue of the Journal of Computer Security focuses on foundational aspects of security, which in recent years have helped change much of the way we think about and approach system security....

  6. Simultaneous bicompartmental bucket handle meniscal tears with a clinically competent Anterior Cruciate Ligament

    Directory of Open Access Journals (Sweden)

    Wright Jonathan

    2010-09-01

    Full Text Available Abstract Bucket handle meniscal tears (BHMT of the knee occur infrequently (approximately 10% of meniscal injuries. Simultaneous, bicompartmental BHMT are extremely rare. Previously, these have only been reported in association with a ruptured anterior cruciate ligament (ACL. The pathomechanism of this injury was thought to be due to the lack of knee stability following the ACL injury. We present a case of a 38 year old male patient with bicompartmental BHMT with a clinically competent ACL. This highlights the need for clinical and radiological suspicion of simultaneous BHMTs even in the presence of an intact ACL.

  7. NUMERICAL SIMULATION OF 3-D AERATED JET BEHIND FLIP BUCKET OF OVERFLOW DAM

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Aerated jet,such as the jet flow behind the flip bucket of an overflow dam, widely exists in hydraulic engineering. Up to now the model test and prototype observation have been two main methods of studying the aerated jet for a special hydraulic project. In this paper, a three-dimensional mathematical model for the aerated jet was established. It seems that the suggested model has high predictive power by comparison with the results of model tests and prototype observations, which is very useful in the study of energy dissipation and jet flow atomization.

  8. Bunch-to-bucket injection of linac beam into the Brookhaven AGS

    International Nuclear Information System (INIS)

    A new fast beam chopper has been used to study injection and capture in the AGS. The chopper is a fast beam switch with 10 ns rise and fall times that can be programmed on a bunch-by-bunch basis and is synchronized to the net accelerating voltage of the synchrotron, thus allowing bunch-to-bucket injection of the 200 MeV H- linac beam. The studies so far have concentrated on simple injection scenarios, at reduced intensity, where longitudinal effects are well separated from transverse. The evolution of the pre-bunched beam during the transition from injection to acceleration has been examined. Results have shown the importance of the detailed linac beam energy distribution. The ability to control the longitudinal emittance of the beam with the fast chopper has been used in other machine studies. This report includes a description of a measurement of the longitudinal coupling impedance of the AGS by the beam transfer function technique which utilized the control of longitudinal emittance provided by bunch-to-bucket injection. Plans for improvements to the chopper equipment are also describe. 6 refs., 4 figs

  9. Experiences in adapting and optimizing equipment parameters of bucket wheel excavators. [German Democratic Republic

    Energy Technology Data Exchange (ETDEWEB)

    Nies, G.; Jurisch, H.

    1985-05-01

    Design and technological improvements of bucket wheel excavator series produced by the TAKRAF manufacturer in the GDR are described. These excavators are predominantly employed in overburden removal and coal mining in brown coal surface mines. Technical specifications of the SRs 2000 excavator, of which 37 units have been produced since 1971, are given. As an example, design features of SRs 2000 excavators built for mining conditions in the Ehkibastuz basin (USSR), Trojanovo mines (Bulgaria) and Prolomain (Greece) are enumerated. This model excavator is in operation in surface mines of 9 East European countries and Greece. Other equipment series built by TAKRAF include the newly developed SRs 4000 produced for surface mining in Amynteon (Greece), Kansk-Achinsk (USSR) and Breitenfeld (GDR), the largest TAKRAF bucket wheel excavator SRs 6300, and the newly developed smaller size series SRs(H) 401 and SRs 402 with a weight of 470 t and a production capacity of 2200 m/sup 3//h. Design schemes of excavator series are provided. 3 references.

  10. CONSTITUTIONAL FOUNDATIONS OF JURISDICTION

    Directory of Open Access Journals (Sweden)

    Alexandre Jamal Batista

    2016-06-01

    Full Text Available At the current stage of our State of Law there is no way to separate the study of the civil procedural law from the Federal Constitution, especially the jurisdiction, because it is in the Constitution that there are the legitimizing foundations of the jurisdiction institute. In this article, we carry on about the constitutional foundations of jurisdiction, such as: the principle of natural justice, principle of access to justice, principle of impartiality, principle of publicity, principle of motivation and principle of submission to res judicata. The conclusion is, after all, that jurisdiction, as one of the bulwarks of the citizen, finds in the “Citizen Constitution” of 1988 its foundations and decisive bases.

  11. Foundations of predictive analytics

    CERN Document Server

    Wu, James

    2012-01-01

    Drawing on the authors' two decades of experience in applied modeling and data mining, Foundations of Predictive Analytics presents the fundamental background required for analyzing data and building models for many practical applications, such as consumer behavior modeling, risk and marketing analytics, and other areas. It also discusses a variety of practical topics that are frequently missing from similar texts. The book begins with the statistical and linear algebra/matrix foundation of modeling methods, from distributions to cumulant and copula functions to Cornish--Fisher expansion and o

  12. Foundations of Power

    DEFF Research Database (Denmark)

    Lev, Amnon

    The categories of law play an essential part in the elaboration of the concept of the modern state. From the 17th century society is perceived to be the product of the free will of its citizens, as expressed in their consent to the social contract. Contract thus becomes the conceptual foundation of...... legal thought arises out of the ruins of natural law and it argues that, even as 20th century legal thought has distanced itself from natural law, it has not ceased to return to its fundamental problem: the problem of the foundation of power....

  13. Optimization Foundations and Applications

    CERN Document Server

    Miller, H Ronald

    2011-01-01

    A thorough and highly accessible resource for analysts in a broad range of social sciences. Optimization: Foundations and Applications presents a series of approaches to the challenges faced by analysts who must find the best way to accomplish particular objectives, usually with the added complication of constraints on the available choices. Award-winning educator Ronald E. Miller provides detailed coverage of both classical, calculus-based approaches and newer, computer-based iterative methods. Dr. Miller lays a solid foundation for both linear and nonlinear models and quickly moves on to dis

  14. Foundations of Risk Analysis

    CERN Document Server

    Aven, Terje

    2012-01-01

    Foundations of Risk Analysis presents the issues core to risk analysis - understanding what risk means, expressing risk, building risk models, addressing uncertainty, and applying probability models to real problems. The author provides the readers with the knowledge and basic thinking they require to successfully manage risk and uncertainty to support decision making. This updated edition reflects recent developments on risk and uncertainty concepts, representations and treatment. New material in Foundations of Risk Analysis includes:An up to date presentation of how to understand, define and

  15. Professional Windows Workflow Foundation

    CERN Document Server

    Kitta, Todd

    2007-01-01

    If you want to gain the skills to build Windows Workflow Foundation solutions, then this is the book for you. It provides you with a clear, practical guide on how to develop workflow-based software and integrate it into existing technology landscapes. Throughout the pages, you'll also find numerous real-world examples and sample code that will help you to get started quickly.Each major area of Windows Workflow Foundation is explored in depth along with some of the fundamentals operations related to generic workflow applications. You'll also find detailed coverage on how to develop workflow in

  16. TCP/IP foundations

    CERN Document Server

    Blank, Andrew G

    2006-01-01

    The world of IT is always evolving, but in every area there are stable, core concepts that anyone just setting out needed to know last year, needs to know this year, and will still need to know next year. The purpose of the Foundations series is to identify these concepts and present them in a way that gives you the strongest possible starting point, no matter what your endeavor. TCP/IP Foundations provides essential knowledge about the two protocols that form the basis for the Internet, as well as many other networks. What you learn here will benefit you in the short term, as you acquire and

  17. Foundations of Corporate Governance

    OpenAIRE

    Volonté, Christophe

    2012-01-01

    This paper outlines the foundations of corporate governance. The discussion includes a review on the modern corporation, transaction costs theory, agency costs theory, legal investor protection, investor protection by corporate governance and its various mechanisms, as well as an overview of the determinants of corporate governance.

  18. Foundation Fighting Blindness

    Science.gov (United States)

    ... Boston VisionWalk Kick Off 8th Annual Central Ohio Golf For Sight Golf Classic San Antonio/Austin Chapter Speaker Series Presentations ... Foundation Fighting Blindness’ 2015 Annual Report. Read More Learn more about the latest retinal research news and ...

  19. Glaucoma Research Foundation

    Science.gov (United States)

    ... and research. Subscribe Browse the Gleams Archive » Glaucoma Research Foundation www.glaucoma.org 251 Post Street, Suite 600 San Francisco , CA 94108 (415) 986-3162 (800) 826-6693 question@ glaucoma.org ... Progress Get Involved News About Us Donate Informacion ...

  20. Kessler Foundation Research Center

    Science.gov (United States)

    ... fMRI software could invalidate 15 years of brain research . Read More > Kessler Foundation Making Headlines nTIDE Jobs Report: Employment Continues to Climb for Americans with Disabilities nTIDE Jobs Report: Strong employment gains ... JOIN OUR RESEARCH STUDIES multiple sclerosis stroke traumatic brain injury spinal ...

  1. Foundations for Farming Website

    OpenAIRE

    Foundations for Farming

    2011-01-01

    Metadata only record This website provides information on the activities and outcomes of Foundations for Farming, an international NGO dedicated to promoting Conservation Agriculture as a means of poverty reduction and food security. The organization currently works in Zimbabwe, South Africa, and Malawi, hosting training sessions and facilitating the dissemination of Conservation Agriculture ideologies and practices.

  2. Foundations of factor analysis

    CERN Document Server

    Mulaik, Stanley A

    2009-01-01

    Introduction Factor Analysis and Structural Theories Brief History of Factor Analysis as a Linear Model Example of Factor AnalysisMathematical Foundations for Factor Analysis Introduction Scalar AlgebraVectorsMatrix AlgebraDeterminants Treatment of Variables as Vectors Maxima and Minima of FunctionsComposite Variables and Linear Transformations Introduction Composite Variables Unweighted Composite VariablesDifferentially Weighted Composites Matrix EquationsMulti

  3. Grouting for Pile Foundation Improvement

    OpenAIRE

    Van der Stoel, A.E.C.

    2001-01-01

    The aim of this research was to examine the use of grouting methods for pile foundation improvement, a generic term that is used here to define both foundation renovation (increasing the bearing capacity of a pile foundation that has insufficient bearing capacity) and foundation protection (safeguarding the piles of the foundation against possible damage resulting from underground construction activities in the vicinity). A full-scale test, of which the general set-up and consistency check ar...

  4. Dynamics of structures '89. Vol. 3

    International Nuclear Information System (INIS)

    The proceedings, comprising 3 volumes published by the Plzen Centre of the Czechoslovak Society for Science and Technology (Vol. 1 and 2) and by Skoda Works in Plzen (Vol. 3), contain 107 papers, out of which 8 fall within the INIS Subject Scope; these deal with problems related to the earthquake resistance of nuclear power plants. Attention is paid to the evaluation of seismic characteristics of nuclear power plant equipment, to the equipment testing and to calculations of its dynamic characteristics under simulated seismic stress. (Z.M.)

  5. Measurement errors in tipping bucket rain gauges under different rainfall intensities and their implication to hydrologic models

    Science.gov (United States)

    Measurements from tipping bucket rain gauges (TBRs) consist of systematic and random errors as an effect of external factors, such as mechanical limitations, wind effects, evaporation losses, and rainfall intensity. Two different models of TBRs, viz. ISCO-674 and TR-525 (TexasInstr., Inc.), being us...

  6. Actual evapotranspiration and precipitation measured by lysimeters: a comparison with eddy covariance and tipping bucket

    Science.gov (United States)

    Gebler, S.; Hendricks Franssen, H.-J.; Pütz, T.; Post, H.; Schmidt, M.; Vereecken, H.

    2014-12-01

    This study compares actual evapotranspiration (ETa) measurements by a set of six weighable lysimeters, ETa estimates obtained with the eddy covariance (EC) method, and potential crop evapotranspiration according to FAO (ETc-FAO) for the Rollesbroich site in the Eifel (Western Germany). The comparison of ETa measured by EC (including correction of the energy balance deficit) and by lysimeters is rarely reported in literature and allows more insight into the performance of both methods. An evaluation of ETa for the two methods for the year 2012 shows a good agreement with a total difference of 3.8% (19 mm) between the ETa estimates. The highest agreement and smallest relative differences (methods are found in summer. ETa was close to ETc-FAO, indicating that ET was energy limited and not limited by water availability. ETa differences between lysimeter, ETc-FAO, and EC were mainly related to differences in grass height caused by harvesting management and the EC footprint. The lysimeter data were also used to estimate precipitation amounts in combination with a filter algorithm for high precision lysimeters recently introduced by Peters et al. (2014). The estimated precipitation amounts from the lysimeter data show significant differences compared to the precipitation amounts recorded with a standard rain gauge at the Rollesbroich test site. For the complete year 2012 the lysimeter records show a 16% higher precipitation amount than the tipping bucket. With the help of an on-site camera the precipitation measurements of the lysimeters were analyzed in more detail. It was found that the lysimeters record more precipitation than the tipping bucket in part related to the detection of rime and dew, which contributes 17% to the yearly difference between both methods. In addition, fog and drizzle explain an additional 5.5% of the total difference. Larger differences are also recorded for snow and sleet situations. During snowfall, the tipping bucket device underestimated

  7. Actual evapotranspiration and precipitation measured by lysimeters: a comparison with eddy covariance and tipping bucket

    Directory of Open Access Journals (Sweden)

    S. Gebler

    2014-12-01

    Full Text Available This study compares actual evapotranspiration (ETa measurements by a set of six weighable lysimeters, ETa estimates obtained with the eddy covariance (EC method, and potential crop evapotranspiration according to FAO (ETc-FAO for the Rollesbroich site in the Eifel (Western Germany. The comparison of ETa measured by EC (including correction of the energy balance deficit and by lysimeters is rarely reported in literature and allows more insight into the performance of both methods. An evaluation of ETa for the two methods for the year 2012 shows a good agreement with a total difference of 3.8% (19 mm between the ETa estimates. The highest agreement and smallest relative differences (a was close to ETc-FAO, indicating that ET was energy limited and not limited by water availability. ETa differences between lysimeter, ETc-FAO, and EC were mainly related to differences in grass height caused by harvesting management and the EC footprint. The lysimeter data were also used to estimate precipitation amounts in combination with a filter algorithm for high precision lysimeters recently introduced by Peters et al. (2014. The estimated precipitation amounts from the lysimeter data show significant differences compared to the precipitation amounts recorded with a standard rain gauge at the Rollesbroich test site. For the complete year 2012 the lysimeter records show a 16% higher precipitation amount than the tipping bucket. With the help of an on-site camera the precipitation measurements of the lysimeters were analyzed in more detail. It was found that the lysimeters record more precipitation than the tipping bucket in part related to the detection of rime and dew, which contributes 17% to the yearly difference between both methods. In addition, fog and drizzle explain an additional 5.5% of the total difference. Larger differences are also recorded for snow and sleet situations. During snowfall, the tipping bucket device underestimated precipitation

  8. Crisis Communication (Handbooks of Communication Science Vol. 23)

    DEFF Research Database (Denmark)

    Vol. 23 - The Handbook of Communication Science General editors: Peter J. Schultz and Paul Cobley......Vol. 23 - The Handbook of Communication Science General editors: Peter J. Schultz and Paul Cobley...

  9. Quicksort, largest bucket, and min-wise hashing with limited independence

    DEFF Research Database (Denmark)

    Knudsen, Mathias Bæk Tejs; Stöckel, Morten

    2015-01-01

    k-independent if every variable is uniform and every size k subset is independent. In this paper we consider three classic algorithms under limited independence. Besides the theoretical interest in removing the unrealistic assumption of full independence, the work is motivated by lower independence......Randomized algorithms and data structures are often analyzed under the assumption of access to a perfect source of randomness. The most fundamental metric used to measure how “random” a hash function or a random number generator is, is its independence: a sequence of random variables is said to be...... being more practical. We provide new bounds for randomized quicksort, min-wise hashing and largest bucket size under limited independence. Our results can be summarized as follows. Randomized Quicksort. When pivot elements are computed using a 5-independent hash function, Karloff and Raghavan, J.ACM’93...

  10. Galaxies as Rotating Buckets - a Hypothesis on the Gravitational Constant Based on Mach's Principle

    CERN Document Server

    Unzicker, A

    2003-01-01

    According to Mach's principle inertia has its reason in the presence of all masses in the universe. Despite there is a lot of sympathy for this plausible idea, only a few quantitative frameworks have been proposed to test it. In this paper a tentative theory is given which is based on Mach's critisism on Newton's rotating bucket. Taking this criticism seriously, one is led to the hypothesis that the rotation of our galaxy is the reason for gravitation. Concretely, a functional dependence of the gravitational constant on the size, mass and angular momentum of the milky way is proposed that leads to a spatial, but not to a temporal variation of G. Since Newton's inverse-square law is modified, flat rotation curves of galaxies can be explained that usually need the postulate of dark matter. While the consequences for stellar evolution are discussed briefly, a couple of further observational coincidences are noted and possible experimental tests are proposed.

  11. Multi-leg Seat Inventory Control Based on EMSU and Virtual Bucket

    Directory of Open Access Journals (Sweden)

    Wei Fan

    2014-01-01

    Full Text Available Expected marginal seat revenue (EMSR is a well-known method for airline seat inventory control airlines. However, this method employs a static model to study the dynamic reservation process, and does not take into account the risk tolerance of policy makers. Expected marginal seat utility (EMSU replaces revenue by utility, which addresses the real situation of seat inventory control. However, there is still a lack of multi-leg seat control algorithms based on EMSU. Therefore, using EMSU and bucket algorithms, this paper applies the Markov decision-making process to simulate the flight reservation process and builds a dynamic multi-leg seat inventory control model. Experimental results validate the effectiveness of the proposed method.

  12. Calculation of seed values for longitudinal coupled bunch dipole instability due to uneven bucket population

    International Nuclear Information System (INIS)

    Conventionally, the starting amplitude (or 'seed') for bunched beam coherent oscillations is assumed independent of the steady state Fourier components of the beam, and is attributed to imperfect technology of randomness. However, there are occasions when the dominant component of the seeds derive from the transient response of the impedance to the revolution harmonics. Such harmonics are caused by uneven bucket population. In this paper we find the beam response to sweeping the radio frequency through a cavity parasitic resonance in order to calculate the increases in the individual bunch dipole moments and the coupled-bunch oscillation amplitude. In the KAON Booster, an hypothetical first HOM with Q = 4000 and R/Q = 30 gives a coupled-bunch dipole oscillation of 27 degrees of rf phase; which would swamp any injection timing errors. (Author) 4 refs

  13. Netherlands foundation for radioastronomy

    International Nuclear Information System (INIS)

    A report of the board is followed by departmental reports from the Westerbork Telescope Group, Dwingeloo Telescope Group, Computer Group, Laboratory and Central Technical Services, Astronomy Group, Administration of the Foundation/General Affairs and Personnel Council. Astronomical reports describe radio astronomical research carried out by the Foundation staff and at the Kapteyn Laboratory Groningen, Leiden Observatory, Utrecht Observatory and the Laboratorio di Radioastronomia Bologna, Italy. Progress in the extension of the synthesis radio telescope and investigations into the possibility of substantially increasing the SRT data rate for solar observations, are outlined. Appendices shows the organisational structure, the names of the employees, the operating budget, the observing facilities at Westerbork and Dwingeloo, and the publications and reports published in 1978 and related to observations made with these facilities. (C.F.)

  14. Mathematical foundations of thermodynamics

    CERN Document Server

    Giles, R; Stark, M; Ulam, S

    2013-01-01

    Mathematical Foundations of Thermodynamics details the core concepts of the mathematical principles employed in thermodynamics. The book discusses the topics in a way that physical meanings are assigned to the theoretical terms. The coverage of the text includes the mechanical systems and adiabatic processes; topological considerations; and equilibrium states and potentials. The book also covers Galilean thermodynamics; symmetry in thermodynamics; and special relativistic thermodynamics. The book will be of great interest to practitioners and researchers of disciplines that deal with thermodyn

  15. Foundations of Inference

    OpenAIRE

    Kevin H. Knuth; John Skilling

    2012-01-01

    We present a simple and clear foundation for finite inference that unites and significantly extends the approaches of Kolmogorov and Cox. Our approach is based on quantifying lattices of logical statements in a way that satisfies general lattice symmetries. With other applications such as measure theory in mind, our derivations assume minimal symmetries, relying on neither negation nor continuity nor differentiability. Each relevant symmetry corresponds to an axiom of quantification, and thes...

  16. Foundation doctors’ induction experiences

    OpenAIRE

    Miles, Susan; Kellett, Joanne; Leinster, Sam J.

    2015-01-01

    Background It is well established that trainee doctors struggle with the transition from medical school to starting work and feel unprepared for many aspects of their new role. There is evidence that suitable induction experiences improve competence and confidence, but available data indicate that trainee doctors on the UK Foundation Programme are commonly not experiencing useful inductions. The aim of the reported research was to explore trainee doctors’ experiences with induction during the...

  17. Foundations for Intrusion Prevention

    OpenAIRE

    Alderman, Ian D.; Parter, David W.; Rubin, Shai; Vernon, Mary K.

    2004-01-01

    We propose an infrastructure that helps a system administrator to identify a newly published vulnerability on the site hosts and to evaluate the vulnerability’s threat with respect to the administrator’s security priorities. The infrastructure foundation is the vulnerability semantics, a small set of attributes for vulnerability definition. We demonstrate that with a few attributes it is possible to define the majority of the known vulnerabilities in a way that (i) facilitates ...

  18. Fractal Topology Foundations

    OpenAIRE

    Porchon, Helene

    2012-01-01

    In this paper, we introduce the foundation of a fractal topological space constructed via a family of nested topological spaces endowed with subspace topologies, where the number of topological spaces involved in this family is related to the appearance of new structures on it. The greater the number of topological spaces we use, the stronger the subspace topologies we obtain. The fractal manifold model is brought up as an illustration of space that is locally homeomorphic to the fractal topo...

  19. Foundations of Mathematics

    OpenAIRE

    Chaitin, G. J.

    2002-01-01

    This article discusses what can be proved about the foundations of mathematics using the notions of algorithm and information. The first part is retrospective, and presents a beautiful antique, Godel's proof, the first modern incompleteness theorem, Turing's halting problem, and a piece of postmodern metamathematics, the halting probability Omega. The second part looks forward to the new century and discusses the convergence of theoretical physics and theoretical computer science and hopes fo...

  20. Foundations of image science

    CERN Document Server

    Barrett, Harrison H

    2013-01-01

    Winner of the 2006 Joseph W. Goodman Book Writing Award! A comprehensive treatment of the principles, mathematics, and statistics of image science In today's visually oriented society, images play an important role in conveying messages. From seismic imaging to satellite images to medical images, our modern society would be lost without images to enhance our understanding of our health, our culture, and our world. Foundations of Image Science presents a comprehensive treatment of the principles, mathematics, and st

  1. Foundations for Moral Relativism

    OpenAIRE

    Velleman, J. David

    2015-01-01

    In Foundations for Moral Relativism a distinguished moral philosopher tames a bugbear of current debate about cultural difference. J. David Velleman shows that different communities can indeed be subject to incompatible moralities, because their local mores are rationally binding. At the same time, he explains why the mores of different communities, even when incompatible, are still variations on the same moral themes. The book thus maps out a universe of many moral worlds without, as Vellem...

  2. Transmissibility of the Ice Bucket Challenge among globally influential celebrities: retrospective cohort study

    Science.gov (United States)

    Chan, Brandford H Y; Leung, Gabriel M; Lau, Eric H Y; Pang, Herbert

    2014-01-01

    Objectives To estimate the transmissibility of the Ice Bucket Challenge among globally influential celebrities and to identify associated risk factors. Design Retrospective cohort study. Setting Social media (YouTube, Facebook, Twitter, Instagram). Participants David Beckham, Cristiano Ronaldo, Benedict Cumberbatch, Stephen Hawking, Mark Zuckerberg, Oprah Winfrey, Homer Simpson, and Kermit the Frog were defined as index cases. We included contacts up to the fifth generation seeded from each index case and enrolled a total of 99 participants into the cohort. Main outcome measures Basic reproduction number R0, serial interval of accepting the challenge, and odds ratios of associated risk factors based on fully observed nomination chains; R0 is a measure of transmissibility and is defined as the number of secondary cases generated by a single index in a fully susceptible population. Serial interval is the duration between onset of a primary case and onset of its secondary cases. Results Based on the empirical data and assuming a branching process we estimated a mean R0 of 1.43 (95% confidence interval 1.23 to 1.65) and a mean serial interval for accepting the challenge of 2.1 days (median 1 day). Higher log (base 10) net worth of the participants was positively associated with transmission (odds ratio 1.63, 95% confidence interval 1.06 to 2.50), adjusting for age and sex. Conclusions The Ice Bucket Challenge was moderately transmissible among a group of globally influential celebrities, in the range of the pandemic A/H1N1 2009 influenza. The challenge was more likely to be spread by richer celebrities, perhaps in part reflecting greater social influence. PMID:25514905

  3. Large Aperture "Photon Bucket" Optical Receiver Performance in High Background Environments

    Science.gov (United States)

    Vilnrotter, Victor A.; Hoppe, D.

    2011-01-01

    The potential development of large aperture groundbased "photon bucket" optical receivers for deep space communications, with acceptable performance even when pointing close to the sun, is receiving considerable attention. Sunlight scattered by the atmosphere becomes significant at micron wavelengths when pointing to a few degrees from the sun, even with the narrowest bandwidth optical filters. In addition, high quality optical apertures in the 10-30 meter range are costly and difficult to build with accurate surfaces to ensure narrow fields-of-view (FOV). One approach currently under consideration is to polish the aluminum reflector panels of large 34-meter microwave antennas to high reflectance, and accept the relatively large FOV generated by state-of-the-art polished aluminum panels with rms surface accuracies on the order of a few microns, corresponding to several-hundred micro-radian FOV, hence generating centimeter-diameter focused spots at the Cassegrain focus of 34-meter antennas. Assuming pulse-position modulation (PPM) and Poisson-distributed photon-counting detection, a "polished panel" photon-bucket receiver with large FOV will collect hundreds of background photons per PPM slot, along with comparable signal photons due to its large aperture. It is demonstrated that communications performance in terms of PPM symbol-error probability in high-background high-signal environments depends more strongly on signal than on background photons, implying that large increases in background energy can be compensated by a disproportionally small increase in signal energy. This surprising result suggests that large optical apertures with relatively poor surface quality may nevertheless provide acceptable performance for deep-space optical communications, potentially enabling the construction of cost-effective hybrid RF/optical receivers in the future.

  4. The hydrodynamics of a Graesser ("raining bucket") contactor with a reverse micellar phase.

    Science.gov (United States)

    Jarudilokkul, S; Paulsen, E; Stuckey, D C

    2000-01-01

    A variety of contactor types have been assessed for the liquid-liquid extraction of proteins using reversed micelles; however, many of these contactors suffer from drawbacks such as emulsion formation and poor mass transfer performance. In this study, a small (1.25 L) Graesser "raining bucket" contactor was assessed for use with this system since it has the potential to ameliorate many of these problems. The aim of the work was to evaluate the hydrodynamics of the contactor in order to use this information for future work on mass transfer performance. Hydrodynamic characteristics such as the axial mixing coefficient were determined by residence time distribution studies using a tracer injection method. The effect of rotor speed and flow rate of each phase on axial mixing was investigated, and as a result of its unusual structure, i.e., falling/rising sheet, the interfacial mass transfer area in the Graesser was determined by image analysis. It was found that rotor speed had more influence on the axial mixing coefficient in the aqueous phase than in the reverse micellar phase. The axial mixing coefficient in each phase increased by increasing the flow rate of the same phase. The images obtained in a dropping cell showed that under the conditions of this study (3 rpm, 22 degrees C), the bucket pours one phase through the other in the form of a curtain or sheet. A new image technique was developed to determine the interfacial area of both phases, and it was found that the specific area was 8.6 m(2)/m(3), which was higher than in a spray column but considerably lower than in a RDC or a Graesser run at high rotational speed (50 rpm) without the addition of a surfactant. PMID:11101336

  5. Physicians and foundation hospitals.

    Science.gov (United States)

    Cooper, John; Black, Carol

    2003-01-01

    Foundation NHS Trusts will be constituted in the same way as Mutual Societies, and local people and patients will be invited to become subscribers. Subscribers will elect a board of governors who will appoint the non-executive directors of the Trusts. Foundation Trusts will be outside the performance management system, but will be subject to a regulator and to inspection. Contracts with commissioners will be legally enforceable. Issues discussed in the article include: financial borrowing; whether competition is being reintroduced; poaching staff; fears of a two-tier health service; fragmentation of the NHS; the impact on research and teaching; and the impact on the current 'target culture'. Local communities and patient groups may welcome involvement with their local hospitals, but special interest groups could be a danger. Foundation Trusts may bring back some of the better features of NHS Trusts as originally conceived, and offer better opportunities for clinicians to influence local policies and priorities. Fears of yet another organisational change are an important issue. Only time will tell whether the outcome will justify the effort the changes will involve. PMID:14703035

  6. Wronski's Foundations of Mathematics.

    Science.gov (United States)

    Wagner, Roi

    2016-09-01

    Argument This paper reconstructs Wronski's philosophical foundations of mathematics. It uses his critique of Lagrange's algebraic analysis as a vignette to introduce the problems that he raised, and argues that these problems have not been properly appreciated by his contemporaries and subsequent commentators. The paper goes on to reconstruct Wronski's mathematical law of creation and his notions of theory and techne, in order to put his objections to Lagrange in their philosophical context. Finally, Wronski's proof of his universal law (the expansion of a given function by any series of functions) is reviewed in terms of the above reconstruction. I argue that Wronski's philosophical approach poses an alternative to the views of his contemporary mainstream mathematicians, which brings up the contingency of their choices, and bridges the foundational concerns of early modernity with those of the twentieth-century foundations crisis. I also argue that Wronski's views may be useful to contemporary philosophy of mathematical practice, if they are read against their metaphysical grain. PMID:27573997

  7. Scour around Offshore Windturbine Foundations

    DEFF Research Database (Denmark)

    Larsen, Brian Juul; De Vos, Leen; Frigaard, Peter

    For the present report a testprogramme has been performed to determine the scour around offshore windturbine foundations.......For the present report a testprogramme has been performed to determine the scour around offshore windturbine foundations....

  8. Crohn's & Colitis Foundation of America

    Science.gov (United States)

    ... the full interactive experience. Crohn's & Colitis Foundation of America Find a Doctor Find a support group Log ... Findings about IBD at Crohn’s & Colitis Foundation of America’s Advances in Inflammatory Bowel Diseases Clinical and Research ...

  9. Brain and Behavior Research Foundation.

    Science.gov (United States)

    ... View All > Donate DONATE TODAY! > The Brain & Behavior Research Foundation is committed to alleviating the suffering caused by ... in scientific research. Copyright © 2016 the brain & behavior research foundation Privacy Policy Legal Notices and Disclaimers

  10. Cushing's Support and Research Foundation

    Science.gov (United States)

    ... and find other resources. READ MORE > Cushing's Support & Research Foundation Meet CSRF FORUM Meet and share your experiences ... Forum Privacy Policy Disclaimer Copyright © CSRF • Cushing's Support & Research Foundation 60 Robbins Rd, #12 • Plymouth, MA 02360

  11. Wave Forces on Windturbine Foundations

    DEFF Research Database (Denmark)

    Larsen, Brian Juul; Frigaard, Peter

    A testprogramme has been performed to determine the wave forces on two types of foundations for an offshore windturbine. the tested foundation types are a monopile and cone. Furthermore the shaft of the cone has been tested.......A testprogramme has been performed to determine the wave forces on two types of foundations for an offshore windturbine. the tested foundation types are a monopile and cone. Furthermore the shaft of the cone has been tested....

  12. American foundations : roles and contributions

    OpenAIRE

    Helmut K. Anheier; Hammack, David

    2010-01-01

    Foundations play an essential part in the philanthropic activity that defines so much of American life. No other nation provides its foundations with so much autonomy and freedom of action as does the United States. Liberated both from the daily discipline of the market and from direct control by government, American foundations understandably attract great attention. As David Hammack and Helmut Anheier note in this volume, "Americans have criticized foundations for... their alleged conservat...

  13. Problem solving in foundation engineering using foundationPro

    CERN Document Server

    Yamin, Mohammad

    2016-01-01

    This book is at once a supplement to traditional foundation engineering textbooks and an independent problem-solving learning tool. The book is written primarily for university students majoring in civil or construction engineering taking foundation analysis and design courses to encourage them to solve design problems. Its main aim is to stimulate problem solving capability and foster self-directed learning. It also explains the use of the foundationPro software, available at no cost, and includes a set of foundation engineering applications. Taking a unique approach, Dr. Yamin summarizes the general step-by-step procedure to solve various foundation engineering problems, illustrates traditional applications of these steps with longhand solutions, and presents the foundationPro solutions. The special structure of the book allows it to be used in undergraduate and graduate foundation design and analysis courses in civil and construction engineering. The book stands as valuable resource for students, faculty, ...

  14. Instant Zurb Foundation 4

    CERN Document Server

    Arévalo, Jorge

    2013-01-01

    A quick and easy guide that follows a practical approach to rapidly create responsive web pages using Foundation 4 framework, following the mobile-first philosophy.If you are a web developer who wants to get the most out of your HTML5/CSS/JavaScript skills, this book is ideal for you. It is assumed that you will have some experience with these languages, but for those who don't, you can also be up and running in an instant.

  15. Web services foundations

    CERN Document Server

    Bouguettaya, Athman; Daniel, Florian

    2013-01-01

    Web services and Service-Oriented Computing (SOC) have become thriving areas of academic research, joint university/industry research projects, and novel IT products on the market. SOC is the computing paradigm that uses Web services as building blocks for the engineering of composite, distributed applications out of the reusable application logic encapsulated by Web services. Web services could be considered the best-known and most standardized technology in use today for distributed computing over the Internet.Web Services Foundations is the first installment of a two-book collection coverin

  16. Foundations of isomathematics

    Science.gov (United States)

    Muktibodh, A. S.

    2013-10-01

    Santilli's isomathematics has a strong foundation in the early literature of mathematics surveyed by R.H. Bruck in his land mark book `A Survey of Binary Systems' [1] dating back to 1958. This work aims at exploring the very basics of Isomathematics as suggested by Santilli [7] and [8]. The concept of `Isotopy' plays a vital role in the development of this new age mathematics. Starting with Isotopy of groupoids we develop the study of Isotopy of quasi groups and loops via Partial Planes, Projective planes, 3-nets and multiplicative 3-nets.

  17. Mathematical foundations of elasticity

    CERN Document Server

    Marsden, Jerrold E

    1994-01-01

    This advanced-level study approaches mathematical foundations of three-dimensional elasticity using modern differential geometry and functional analysis. It is directed to mathematicians, engineers and physicists who wish to see this classical subject in a modern setting with examples of newer mathematical contributions. Prerequisites include a solid background in advanced calculus and the basics of geometry and functional analysis.The first two chapters cover the background geometry ― developed as needed ― and use this discussion to obtain the basic results on kinematics and dynamics of con

  18. Foundations of physical law

    CERN Document Server

    Rowlands, Peter

    2014-01-01

    The book originated in a series of lectures given at Liverpool in 2013 to a group that included postgraduate and undergraduate students and staff of the Physics Department. They followed from two very successful lectures given to the undergraduate Physical Society. It seemed that there was a very large interest among the students in investigating the foundations of physics in a way that was never done in physics courses, and was not available in books or other outlets. However, the idea was to create a framework in which students (and interested staff) could develop their own thinking relativ

  19. Foundations of Inference

    Directory of Open Access Journals (Sweden)

    Kevin H. Knuth

    2012-06-01

    Full Text Available We present a simple and clear foundation for finite inference that unites and significantly extends the approaches of Kolmogorov and Cox. Our approach is based on quantifying lattices of logical statements in a way that satisfies general lattice symmetries. With other applications such as measure theory in mind, our derivations assume minimal symmetries, relying on neither negation nor continuity nor differentiability. Each relevant symmetry corresponds to an axiom of quantification, and these axioms are used to derive a unique set of quantifying rules that form the familiar probability calculus. We also derive a unique quantification of divergence, entropy and information.

  20. Use of midlatitude soil moisture and meteorological observations to validate soil moisture simulations with biosphere and bucket models

    International Nuclear Information System (INIS)

    Soil moisture observations in sites with natural vegetation were made for several decades in the former Soviet Union at hundreds of stations. In this paper, the authors use data from six of these stations from different climatic regimes, along with ancillary meteorological and actinometric data, to demonstrate a method to validate soil moisture simulations with biosphere and bucket models. Some early and current general circulation models (GCMs) use bucket models for soil hydrology calculations. More recently, the Simple Biosphere Model (SiB) was developed to incorporate the effects of vegetation on fluxes of moisture, momentum, and energy at the earth's surface into soil hydrology models. Until now, the bucket and SiB have been verified by comparison with actual soil moisture data only on a limited basis. In this study, a Simplified SiB (SSiB) soil hydrology model and a 15-cm bucket model are forced by observed meteorological and actinometric data every 3 h for 6-yr simulations at the six stations. The model calculations of soil moisture are compared to observations of soil moisture, literally 'ground truth,' snow cover, surface albedo, and net radiation, and with each other. For three of the stations, the SSiB and 15-cm bucket models produce good simulations of seasonal cycles and interannual variations of soil moisture. For the other three stations, there are large errors in the simulations by both models. Inconsistencies in specification of field capacity may be partly responsible. There is no evidence that the SSiB simulations are superior in simulating soil moisture variations. In fact, the models are quite similar since SSiB implicitly has a bucket embedded in it. One of the main differences between the models is in the treatment of runoff due to melting snow in the spring-SSiB incorrectly puts all the snowmelt into runoff. While producing similar soil moisture simulations, the models produce very different surface latent and sensible heat

  1. Mathematical foundations of biomechanics.

    Science.gov (United States)

    Niederer, Peter F

    2010-01-01

    The aim of biomechanics is the analysis of the structure and function of humans, animals, and plants by means of the methods of mechanics. Its foundations are in particular embedded in mathematics, physics, and informatics. Due to the inherent multidisciplinary character deriving from its aim, biomechanics has numerous connections and overlapping areas with biology, biochemistry, physiology, and pathophysiology, along with clinical medicine, so its range is enormously wide. This treatise is mainly meant to serve as an introduction and overview for readers and students who intend to acquire a basic understanding of the mathematical principles and mechanics that constitute the foundation of biomechanics; accordingly, its contents are limited to basic theoretical principles of general validity and long-range significance. Selected examples are included that are representative for the problems treated in biomechanics. Although ultimate mathematical generality is not in the foreground, an attempt is made to derive the theory from basic principles. A concise and systematic formulation is thereby intended with the aim that the reader is provided with a working knowledge. It is assumed that he or she is familiar with the principles of calculus, vector analysis, and linear algebra. PMID:21303323

  2. Temperature profile data from bucket, surface seawater intake, and XBT casts in a world wide distribution from 07 December 1995 to 18 October 1996 (NODC Accession 9600167)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile data were collected using bucket, surface seawater intake, and XBT casts from several vessels in a world wide distribution from December 07,...

  3. Z physics at LEP 1. Vol. 1

    International Nuclear Information System (INIS)

    The contents of this final report from the Workshop on Z Physics at LEP can be divided into two parts. The first part, comprising Vols. 1 and 2, is a relatively concise but fairly complete handbook on the physics of e+e- annihilation near the Z peak (with normal LEP luminosity and unpolarized beams, appropriate for the first phase of LEP operation). The second part (Vol. 3) is devoted to a review of the existing Monte Carlo event generators for LEP physics. A special effort has been made to co-ordinate the different parts of this report, with the aim of achieving a systematic and balanced review of the subject, rather than having simply a collection of separate contributions. (orig.)

  4. Z Physics at LEP 1. Vol. 3

    International Nuclear Information System (INIS)

    The contents of this final report from the Workshop on Z Physics at LEP can be divided into two parts. The first part, comprising Vols. 1 and 2, is a relatively concise but fairly complete handbook on the physics of e+e- annihilation near the Z peak (with normal LEP luminosity and unpolarized beams, appropriate for the first phase of LEP operation). The second part (Vol. 3) is devoted to a review of the existing Monte Carlo event generators for LEP physics. A special effort has been made to co-ordinate the different parts of this report, with the aim of achieving a systematic and balanced review of the subject, rather than having simply a collection of separate contributions. (orig.)

  5. Z physics at LEP 1. Vol. 2

    International Nuclear Information System (INIS)

    The contents of this final report from the Workshop on Z Physics at LEP can be divided into two parts. The first part, comprising Vols. 1 and 2, is a relatively concise but fairly complete handbook on the physics of e+e- annihilation near the Z peak (with normal LEP luminosity and unpolarized beams, appropriate for the first phase of LEP operation). The second part (Vol. 3) is devoted to a review of the existing Monte Carlo event generators for LEP physics. A special effort has been made to co-ordinate the different parts of this report, with the aim of achieving a systematic and balanced review of the subject, rather than having simply a collection of separate contributions. (orig.)

  6. The double flipped meniscus sign: unusual MRI findings in bucket-handle tear of the lateral meniscus.

    Science.gov (United States)

    Ahn, Jin Hwan; Yim, Soo Jae; Seo, Yu Seok; Ko, Taeg Su; Lee, Joon Hee

    2014-01-01

    Bucket-handle meniscal tears are either longitudinal, vertical, or oblique in direction with an attached tear fragment displaced from the meniscus. Magnetic resonance imaging (MRI) signs are widely used in the diagnosis of these tears, including the 'fragment within the intercondylar notch sign', 'flipped meniscus sign', 'double anterior horn sign', 'absence of the bow tie sign', 'double posterior cruciate ligament (PCL) sign', 'posterior double PCL sign', and 'triple PCL sign'. We report an unusual case, not yet described in previous studies, of a bucket-handle tear presenting as a double longitudinal tear of the lateral meniscus (LM). Two longitudinal tears were observed in the white-white zone and the red-white zone of the LM, where both fragments were shown to be displaced and locked within the intercondylar notch. Partial menisectomy was performed for the central fragment and a repair with modified all-inside sutures was performed for the peripheral fragment. PMID:24156924

  7. Large hadron collider workshop. Proceedings. Vol. 3

    International Nuclear Information System (INIS)

    The aim of the LHC workshop at Aachen was to discuss the 'discovery potential' of a high-luminosity hadron collider (the Large Hadron Collider) and to define the requirements of the detectors. Of central interest was whether a Higgs particle with mass below 1 TeV could be seen using detectors potentially available within a few years from now. Other topics included supersymmetry, heavy quarks, excited gauge bosons, and exotica in proton-proton collisions, as well as physics to be observed in electron-proton and heavy-ion collisions. A large part of the workshop was devoted to the discussion of instrumental and detector concepts, including simulation, signal processing, data acquisition, tracking, calorimetry, lepton identification and radiation hardness. The workshop began with parallel sessions of working groups on physics and instrumentaiton and continued, in the second half, with plenary talks giving overviews of the LHC project and the SSC, RHIC, and HERA programmes, summaries of the working groups, presentations from industry, and conclusions. Vol. 1 of these proceedings contains the papers presented at the plenary sessions, Vol. 2 the individual contributions to the physics sessions, and Vol. 3 those to the instrumentation sessions. (orig.)

  8. Large hadron collider workshop. Proceedings. Vol. 1

    International Nuclear Information System (INIS)

    The aim of the LCH workshop at Aachen was to discuss the 'discovery potential' of a high-luminosity hadron collider (the Large Hadron Collider) and to define the requirements of the detectors. Of central interest was whether a Higgs particle with mass below 1 TeV could be seen using detectors potentially available within a few years from now. Other topics included supersymmetry, heavy quarks, excited gauge bosons, and exotica in proton-proton collisions, as well as physics to be observed in electron-proton and heavy-ion collisions. A large part of the workshop was devoted to the discussion of instrumental and detector concepts, including simulation, signal processing, data acquisition, tracking, calorimetry, lepton identification and radiation hardness. The workshop began with parallel sessions of working groups on physics and instrumentation and continued, in the second half, with plenary talks giving overviews of the LHC project and the SSC, RHIC, and HERA programmes, summaries of the working groups, presentations from industry, and conclusions. Vol. 1 of these proceedings contains the papers presented at the plenary sessions, Vol. 2 the individual contributions to the physics sessions, and Vol. 3 those to the instrumentation sessions. (orig.)

  9. Large hadron collider workshop. Proceedings. Vol. 2

    International Nuclear Information System (INIS)

    The aim of the LHC workshop at Aachen was to discuss the 'discovery potential' of a high-luminosity hadron collider (the Large Hadron Collider) and to define the requirements of the detectors. Of central interest was whether a Higgs particle with mass below 1 TeV could be seen using detectors potentially available within a few years from now. Other topics included supersymmetry, heavy quarks, excited gauge bosons, and exotica in proton-proton collisions, as well as physics to be observed in electron-proton and heavy-ion collisions. A large part of the workshop was devoted to the discussion of instrumental and detector concepts, including simulation, signal processing, data acquisition, tracking, calorimetry, lepton identification and radiation hardness. The workshop began with parallel sessions of working groups on physics and instrumentation and continued, in the second half, with plenary talks giving overviews of the LHC project and the SSC, RHIC, and HERA programmes, summaries of the working groups, presentations from industry, and conclusions. Vol.1 of these proceedings contains the papers presented at the plenary sessions, Vol.2 the individual contributions to the physics sessions, and Vol.3 those to the instrumentation sessions. (orig.)

  10. Foundations of Quantum Decoherence

    CERN Document Server

    Gamble, John

    2008-01-01

    The conventional interpretation of quantum mechanics, though it permits a correspondence to classical physics, leaves the exact mechanism of transition unclear. Though this was only of philosophical importance throughout the twentieth century, over the past decade new technological developments, such as quantum computing, require a more thorough understanding of not just the result of quantum emergence, but also its mechanism. Quantum decoherence theory is the model that developed out of necessity to deal with the quantum-classical transition explicitly, and without external observers. In this thesis, we present a self-contained and rigorously argued full derivation of the master equation for quantum Brownian motion, one of the key results in quantum decoherence theory. We accomplish this from a foundational perspective, only assuming a few basic axioms of quantum mechanics and deriving their consequences. We then consider a physical example of the master equation and show that quantum decoherence successfull...

  11. Foundations of quantum gravity

    CERN Document Server

    Lindesay, James

    2013-01-01

    Exploring how the subtleties of quantum coherence can be consistently incorporated into Einstein’s theory of gravitation, this book is ideal for researchers interested in the foundations of relativity and quantum physics. The book examines those properties of coherent gravitating systems that are most closely connected to experimental observations. Examples of consistent co-gravitating quantum systems whose overall effects upon the geometry are independent of the coherence state of each constituent are provided, and the properties of the trapping regions of non-singular black objects, black holes, and a dynamic de Sitter cosmology are discussed analytically, numerically, and diagrammatically. The extensive use of diagrams to summarise the results of the mathematics enables readers to bypass the need for a detailed understanding of the steps involved. Assuming some knowledge of quantum physics and relativity, the book provides textboxes featuring supplementary information for readers particularly interested ...

  12. Foundations of signal processing

    CERN Document Server

    Vetterli, Martin; Goyal, Vivek K

    2014-01-01

    This comprehensive and engaging textbook introduces the basic principles and techniques of signal processing, from the fundamental ideas of signals and systems theory to real-world applications. Students are introduced to the powerful foundations of modern signal processing, including the basic geometry of Hilbert space, the mathematics of Fourier transforms, and essentials of sampling, interpolation, approximation and compression. The authors discuss real-world issues and hurdles to using these tools, and ways of adapting them to overcome problems of finiteness and localisation, the limitations of uncertainty and computational costs. Standard engineering notation is used throughout, making mathematical examples easy for students to follow, understand and apply. It includes over 150 homework problems and over 180 worked examples, specifically designed to test and expand students' understanding of the fundamentals of signal processing, and is accompanied by extensive online materials designed to aid learning, ...

  13. Radiation Effects Research Foundation

    International Nuclear Information System (INIS)

    The last day of March 1978 marked the completion of the first 3 years of operation of the Radiation Effects Research Foundation in Hiroshima and Nagasaki. RERF was established on 1 April 1975 as successor to the Atomic Bomb Casualty Commission which had been in continuous operation since 1947. This record of the first 3 years of operation consists of selected reports and other documents prepared in the course of conducting the business of RERF and includes a brief history, a late radiation effects that might be conducted at RERF. The wisdom and thought given to the research program and its operation by the Scientific Council and the Board of Directors is reflected in the minutes of their meetings which are included in the Appendix. (Mori, K.)

  14. Scientific foundations of engineering

    CERN Document Server

    McKnight, Stephen

    2015-01-01

    Providing an overview of the foundations of engineering from a fundamental scientific and physical perspective, this book reinforces the basic scientific and mathematical principles which underpin a range of engineering disciplines and applications. It covers the basics of physics, including quantum physics, as well as some key topics in chemistry, making it a valuable resource for both students and professionals looking to gain a more coherent and interdisciplinary understanding of engineering systems. Throughout, the focus is on common features of physical systems (such as mechanical and electronic resonance), showing how the same underlying principles apply to different disciplines. Problems are provided at the end of each chapter including conceptual questions and examples to demonstrate the practical application of fundamental scientific principles. These include real-world examples, which are solvable using computational packages such as MATLAB.

  15. Direct Excitation of High-Amplitude Chirped Bucket-BGK Modes

    Science.gov (United States)

    Bertsche, William

    2004-11-01

    Using a low amplitude, chirped-frequency localized potential drive(W. Bertsche, J. Fajans and L. Friedland, Direct Excitation of High-Amplitude Chirped Bucket-BGK Modes, Phys. Rev. Lett., 91: 265003, 2003. ), we excited undamped large amplitude electrostatic plasma waves in a relatively hot plasma. We believe these waves to be BGK waves, stationary, non-linear kinetic waves which are untouched by classical Landau damping. Even though BGK modes underpin much of kinetic wave theory, direct experimental evidence of undamped BGK waves has proven elusive. Large-amplitude responses have been observed in the past, however such structures have generally been unstable and short-lived. Other excitations generated during continuous driving have resulted in stable but low-amplitude waves. Our technique generates a tailored distribution function along with a self-consistent field, yielding large oscillations long after the drive has been removed. A theory for this excitation has been developed, which agrees with many features observed experimentally(L. Friedland, F. Peinetti, W. Bertsche, J. Fajans, and J. Wurtele, Driven Phase Space Holes and Synchronized Bernstein, Green, and Kruskal (BGK) Modes , Phys. Plasmas (accepted, 2004).). Restricted two-dimensional PIC simulations of an electron plasma column with a localized chirped drive are in close agreement with experimental data. This technique may lend laboratory insight to physical phenomena observed in other fields such as laser plasma interactions.

  16. Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process

    Energy Technology Data Exchange (ETDEWEB)

    Schilke, Peter W. (4 Hempshire Ct., Scotia, NY 12302); Muth, Myron C. (R.D. #3, Western Ave., Amsterdam, NY 12010); Schilling, William F. (301 Garnsey Rd., Rexford, NY 12148); Rairden, III, John R. (6 Coronet Ct., Schenectady, NY 12309)

    1983-01-01

    In the method for fabrication of water-cooled composite nozzle and bucket hardware for high temperature gas turbines, a high thermal conductivity copper alloy is applied, employing a high velocity/low pressure (HV/LP) plasma arc spraying process, to an assembly comprising a structural framework of copper alloy or a nickel-based super alloy, or combination of the two, and overlying cooling tubes. The copper alloy is plamsa sprayed to a coating thickness sufficient to completely cover the cooling tubes, and to allow for machining back of the copper alloy to create a smooth surface having a thickness of from 0.010 inch (0.254 mm) to 0.150 inch (3.18 mm) or more. The layer of copper applied by the plasma spraying has no continuous porosity, and advantageously may readily be employed to sustain a pressure differential during hot isostatic pressing (HIP) bonding of the overall structure to enhance bonding by solid state diffusion between the component parts of the structure.

  17. Portraying the Portuguese Foundation Sector

    OpenAIRE

    Fernanses, Tânia

    2016-01-01

    Foundations’ importance in the actual economy has been increasingly recognized. This work project assesses the impact of the new legal framework in the foundations’ financial reporting and offers a financial statement analysis of the Portuguese foundational sector. It unveils links between financial performance and characteristics of foundations, and profiles foundations in three clusters, each with different approaches to disclosure, volunteer workforce, and taxes. It is concl...

  18. The Governance of Industrial Foundations

    DEFF Research Database (Denmark)

    Børsting, Christa; Kuhn, Johan; Poulsen, Thomas;

    We study turnover among executives and directors in companies owned by Danish industrial foundations, which are held to be long term owners. Executives are members of the management board (direktionen), whereas directors a members of the supervisiory board (bestyrelsen). As expected, we find that...... both director and executive turnover is lower in foundation-owned companies. Foundation-owned companies are more likely to replace directors, but not executives, when performance is bad (negative profits). Thus, we find some evidence of long-termism in foundation-owned companies....

  19. The logical foundations of mathematics

    CERN Document Server

    Hatcher, William S

    1981-01-01

    The Logical Foundations of Mathematics offers a study of the foundations of mathematics, stressing comparisons between and critical analyses of the major non-constructive foundational systems. The position of constructivism within the spectrum of foundational philosophies is discussed, along with the exact relationship between topos theory and set theory.Comprised of eight chapters, this book begins with an introduction to first-order logic. In particular, two complete systems of axioms and rules for the first-order predicate calculus are given, one for efficiency in proving metatheorems, and

  20. Coarse categories I: foundations

    CERN Document Server

    Luu, Viêt-Trung

    2007-01-01

    Following Roe and others (see, e.g., [MR1451755]), we (re)develop coarse geometry from the foundations, taking a categorical point of view. In this paper, we concentrate on the discrete case in which topology plays no role. Our theory is particularly suited to the development of the Roe (C*-)algebras C*(X) and their K-theory on the analytic side; we also hope that it will be of use in the strictly geometric/algebraic setting of controlled topology and algebra. We leave these topics to future papers. Crucial to our approach are nonunital coarse spaces, for which we introduce locally proper maps. Our coarse category Crs generalizes the usual one: its objects are nonunital coarse spaces and its morphisms (locally proper) coarse maps modulo closeness. Crs is much richer than the usual unital coarse category. As such, it has all nonzero limits and all colimits. We examine various other categorical issues. E.g., Crs does not have a terminal object, so we substitute a termination functor which will be important in t...

  1. Foundations of resilience thinking.

    Science.gov (United States)

    Curtin, Charles G; Parker, Jessica P

    2014-08-01

    Through 3 broad and interconnected streams of thought, resilience thinking has influenced the science of ecology and natural resource management by generating new multidisciplinary approaches to environmental problem solving. Resilience science, adaptive management (AM), and ecological policy design (EPD) contributed to an internationally unified paradigm built around the realization that change is inevitable and that science and management must approach the world with this assumption, rather than one of stability. Resilience thinking treats actions as experiments to be learned from, rather than intellectual propositions to be defended or mistakes to be ignored. It asks what is novel and innovative and strives to capture the overall behavior of a system, rather than seeking static, precise outcomes from discrete action steps. Understanding the foundations of resilience thinking is an important building block for developing more holistic and adaptive approaches to conservation. We conducted a comprehensive review of the history of resilience thinking because resilience thinking provides a working context upon which more effective, synergistic, and systems-based conservation action can be taken in light of rapid and unpredictable change. Together, resilience science, AM, and EPD bridge the gaps between systems analysis, ecology, and resource management to provide an interdisciplinary approach to solving wicked problems. PMID:24975863

  2. Experimental Research of Engine Foundations

    OpenAIRE

    Violeta-Elena Chiţan; Doina Ştefan

    2004-01-01

    This paper tries a compact presentation of experimental research of engine-foundations. The dynamic phenomena are so complex, that the vibrations cannot be estimated in the design stage. The design engineer of an engine foundation must foresee through a dynamic analysis of the vibrations, those measures that lead to the avoidance or limiting of the bad effects caused by the vibrations.

  3. Antithetic Foundations of Economics

    Directory of Open Access Journals (Sweden)

    Marin Dinu

    2011-03-01

    Full Text Available This paper aims at decrypting the manner in which the foundations of Economics as a science and the meanings of the relevant explanatory formulas are being shaped. My analytical endeavor focuses on understanding the peculiarities of what is referred to as the object of study of the science known as Economics, an academic synthesis of concept-related breakthroughs regarding economicity. The explicit purpose of this analysis is to identify perennial benchmarks in economic cognition whereby this ensures its consistency. The implicit purpose is to shape a cognitive model in line with the specifics of the conceptual universe of Economics, as well as with the sources of the economic realities that are subject to a sui-generis relativism. The primary benefit of this endeavor consists in systemizing the conceptual prospects with an antithetic nature that allow for the explanations of the state of economic rationality and generate the understanding of what the source of economicity is and how it behaves. As such, the conclusions are marked by the stringent need of more precisely defining economic knowledge in order to match the changing nature of economic reality, as an expression that embraces the meeting point of two ontological vistas that are methodologically separated by some theories: human nature and human condition. Economics as a science thus features, apart from a conceptual substrate that needs to be spotted, an ontological background that needs to be revealed. The role played by this background appears to be most frequently ignored. The joint identification of both direct and contextual determinants for a sensitive area of humankind, i.e. the economy, is a direction to be followed by the royal path of rational knowledge.

  4. Designing a simple physically-based bucket SVAT model for spatialisation of water needs

    Science.gov (United States)

    Lakhal, A.; Boulet, G.; Lakhal, L.; Er-Raki, S.; Duchemin, B.; Chehbouni, G.; Timouk, F.

    2003-04-01

    Within the frame of both IRRIMED and SUDMED projects one needs a robust and simple tool to provide space-time estimates of the water requirements in flat semi-arid agricultural zones. This is the task of the simplest water balance equations, which can be seen as simple SVAT schemes. Most of the simplest SVAT schemes use the classical bucket representation of soil moisture exchange through the soil-canopy-air continuum. They usually rely on empirical relationships such as the “beta function” that are not well suited for all climate, soil and vegetation conditions. Some of them for instance greatly simplify the deep drainage parameterization, or overlook the first to second stage evaporation processes. Several authors have proposed physically-based simple expressions, such as the desorptive approach, which gives accurate integrated capillary flows under constant boundary conditions. We propose here a simple SVAT schemes that uses the same approach but reduces as much as possible the number of empirical relationships. It is tested against 1) a physically based complex SVAT scheme SiSPAT and 2) experimental data acquired during the SALSA and the SUDMED field experiments in Mexico and Morocco (respectively) for a large range of vegetation types (olive trees, wheat crop, grassland). This simple SVAT is well suited to simulate long time series of soil moisture evolution, and proves to give accurate predictions of first to second-stage evaporation time series for the bare soil and fully vegetated cover conditions. An insight into model adjustment for sparse vegetation (which usually prevails under semi-arid conditions) is proposed and partially evaluated against SiSPAT outputs.

  5. Physics at LEP2. Vol. 1

    International Nuclear Information System (INIS)

    This is the final report of the Workshop on Physics at LEP2, held at CERN during 1995. The first part of vol. 1 is devoted to aspects of machine physics of particular relevance to experiments, including the energy, luminosity and interaction regions, as well as the measurement of beam energy. The second part of vol. 1 is a relatively concise, but fairly complete, handbook on the physics of e+e- annihilation above the WW threshold and up to √s∼200 GeV. It contains discussions on WW cross-sections and distributions, W mass determination, Standard Model processes, QCD and gamma-gamma physics, as well as aspects of discovery physics, such as Higgs, new particle searches, triple gauge boson couplings and Z'. The second volume contains a review of the existing Monte Carlo generators for LEP2 physics. These include generators for WW physics, QCD and gamma-gamma processes, Bhabha scattering and discovery physics. A special effort was made to co-ordinate the different parts, with a view to achieving a systematic and balanced review of the subject, rather than just publishing a collection of separate contributions. (orig.)

  6. Physics at LEP2. Vol. 2

    International Nuclear Information System (INIS)

    This is final report of the Workshop on Physics at LEP2, held at CERN during 1995. The first part of vol. 1 is devoted to aspects of machine physics of particular relevance to experiments, including the energy, luminosity and interaction regions, as well as the measurement of beam energy. The second part of vol. 1 is a relatively concise, but fairly complete, handbook on the physics of e+e- annihilation above the WW threshold and up to √s∼200 GeV. It contains discussions on WW cross-sections and distributions, W mass determination, Standard Model processes, QCD and gamma-gamma physics, as well as aspects of discovery physics, such as Higgs, new particle searches, triple gauge boson couplings and Z'. The second volume contains a review of the existing Monte Carlo generators for LEP2 physics. These include generators for WW physics, QCD and gamma-gamma processes, Bhabha scattering and discovery physics. A special effort was made to co-ordinate the different parts, with a view to achieving a systematic and balanced review of the subject, rather than just publishing a collection of separate contributions. (orig.)

  7. NEWS: Solid foundations?

    Science.gov (United States)

    2000-07-01

    Among the initiatives to be found at UK universities is a vocational award with the title `University Foundation Degree' at Nottingham Trent University. This qualification will be offered in 14 different subjects including four in the Faculty of Science and Mathematics, in the areas of applied biology, applied sciences, chemistry and physics. The courses will be available on a two-year full-time, three-year sandwich or a part-time basis. Set at a higher standard and specification than the Higher National Diplomas which it replaces, the UFD has been devised in consultation with industry and will cover the technical and specialist areas demanded by employers to combat skills shortages. The UFD in applied sciences concentrates on practical applications through laboratory, IT and project work, supported by lectures and seminars. At the end students can enter the employment market or transfer onto the second year of a degree course. Science-based careers including research and development would be the aim of those taking the UFD in physics. The first year develops the fundamentals of modern physics supported by studies in mathematics, IT and computer programming, whilst year 2 is vocational in nature with industrial problem solving and work experience as well as an academic theme associated with environmental aspects of the subject. Those who complete the UFD will be allowed automatic progression to a specified honours degree course and would normally be expected to study for a further two years for this award. However, those demonstrating an outstanding academic performance can transfer to the linked degree programme at the end of the first year via fast-track modules. Back in May the UK's Quality Assurance Agency (QAA) announced new standard benchmarks for degrees. These will be introduced into higher education institutions from 2002 to outline the knowledge, understanding and skills a student should gain from a particular higher education course. These benchmark

  8. The Diagnostic Value of Sonography in Bucket Handle Tear of Meniscus and Complete MCL Tear Compared with Arthroscopy

    Directory of Open Access Journals (Sweden)

    J. Najafi

    2006-05-01

    Full Text Available Background/Objective: The concept of evaluating the musculoskeletal system with ultrasound was initially introduced in the late 1970s. For evaluating meniscal tears, which are a common injury in traumatic events of knee, linear probes with high resolution have been used. In this study, we compared the results of sonography with arthroscopy in diagnosing bucket handle tear of meniscus and MCL tear. Patients and Methods: 218 clinically symptomatic knee joints with clinical indication of arthro-scopy were examined by sonography in a referral sport medicine center. The patients eventually had arthroscopic exam. The results were compared, and statistically analyzed using Fisher’s exact. Results: In this study, of 218 patient who had arthroscopy and sonography, the sensitivity and specificity of sonography in meniscal tear were 68.1% and 100%, respectively. 34 patients had bucket handle tear of the posterior horn of the medial meniscus on sonography; six cases (17.6% of which had abnormally small posterior horns of medial meniscus (in favor of meniscal tear but in 60 patients with other types of meniscal tear, sonography revealed tear in 58 (96.6%(P<0.0001. Six patients had complete MCL tear in arthroscopy, while in sonography 4 complete MCL tears were shown. Sensitivity of ultrasound in diagnosing complete MCL tear was 66.6% and specificity of 98%. Conclusion: Ultrasound is easily applicable in evaluation of knee derangement: however, for bucket handle tears it has limited application. For MCL tears, sonography seems an accurate method. Ultrasonography is rapid, low-cost and non-invasive examination.

  9. Hauling techniques of bucket- based structure%桶式结构运输出运工艺

    Institute of Scientific and Technical Information of China (English)

    秦丹; 黄鹏举; 刘晓曦

    2016-01-01

    连云港港徐圩港区直立堤工程采用的新型无底桶式结构具有施工效率高、造价低、对环境影响小、占有资源少、结构新颖等特点,能适应日益外海化深水化的防波堤工程施工。文章介绍了新型无底桶式结构从预制场地到海上安装位置的运输出运工艺,对场内台车运输工艺、上驳气囊运输工艺、水上气浮拖运工艺等多项关键施工技术进行阐述,可为同类型无底桶式结构项目施工提供参考和借鉴。%The new type of bottomless bucket-based structure is the trend to accommodate the increasing breakwater construction in deep waters and open seas with its numerous advantages: high efficiency, low cost, environment friendly, resource saving and frame novel. It has been applied in the up-right breakwater in Xuwei District in Lianyungang Port. We introduced the hauling techniques of bucket-based structure between the prefabricate site and installation position, described the trolleys, gasbags and pneumatic floating techniques, which can provide reference for the construction of similar bottomless bucket-based structures.

  10. Polish Foundation for Energy Efficiency

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    The Polish Foundation for Energy Efficiency (FEWE) was established in Poland at the end of 1990. FEWE, as an independent and non-profit organization, has the following objectives: to strive towards an energy efficient national economy, and to show the way and methods by use of which energy efficiency can be increased. The activity of the Foundation covers the entire territory of Poland through three regional centers: in Warsaw, Katowice and Cracow. FEWE employs well-known and experienced specialists within thermal and power engineering, civil engineering, economy and applied sciences. The organizer of the Foundation has been Battelle Memorial Institute - Pacific Northwest Laboratories from the USA.

  11. The Swiss National Science Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    @@ Introduction The Swiss National Science Foundation (SNSF) is Switzerland's leading provider of scientific research funding.The SNSF annually supports some 7200 researchers, almost 80 percent of whom are aged 35 years or younger.

  12. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providin gquality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in

  13. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation(RDF),founded in1996,is an Indian nonprofit organization with the mission of providingquality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in

  14. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation (RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in Andhra

  15. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools

  16. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in

  17. Kaiser Family Foundation - Content Search

    Data.gov (United States)

    U.S. Department of Health & Human Services — Chartpacks, chartbooks, factsheets, reports, and slide presentations bring Kaiser Family Foundation information to life, and can be easily incorporated into your...

  18. Mathematical foundations of quantum statistics

    CERN Document Server

    Khinchin, A Y

    2011-01-01

    A coherent, well-organized look at the basis of quantum statistics' computational methods, the determination of the mean values of occupation numbers, the foundations of the statistics of photons and material particles, thermodynamics.

  19. Foundation for Film and Science

    Science.gov (United States)

    van der Veen, G.

    1976-01-01

    Provides a comprehensive discussion on the Stichting Film en Wetenschap, SFW (Foundation for Film and Science), in Utrecht. Various aspects of the use of audio-visual aids in university teaching are looked at in detail. (Editor/RK)

  20. Foundations of genetic algorithms 1991

    CERN Document Server

    FOGA

    1991-01-01

    Foundations of Genetic Algorithms 1991 (FOGA 1) discusses the theoretical foundations of genetic algorithms (GA) and classifier systems.This book compiles research papers on selection and convergence, coding and representation, problem hardness, deception, classifier system design, variation and recombination, parallelization, and population divergence. Other topics include the non-uniform Walsh-schema transform; spurious correlations and premature convergence in genetic algorithms; and variable default hierarchy separation in a classifier system. The grammar-based genetic algorithm; condition

  1. Experimental Research of Engine Foundations

    Directory of Open Access Journals (Sweden)

    Violeta-Elena Chiţan

    2004-01-01

    Full Text Available This paper tries a compact presentation of experimental research of engine-foundations. The dynamic phenomena are so complex, that the vibrations cannot be estimated in the design stage. The design engineer of an engine foundation must foresee through a dynamic analysis of the vibrations, those measures that lead to the avoidance or limiting of the bad effects caused by the vibrations.

  2. Physical Foundations of Cosmology

    International Nuclear Information System (INIS)

    In 1952, Mme Yvonne Choquet-Bruhat published a major paper, Theoreme d'existence pour certains systemes d'equations aux derivees partielles non lineaires (Acta Math. 88 141-225), which laid the foundation for modern studies of the Cauchy problem in general relativity. The fiftieth anniversary of this event was celebrated with an eponymous Cargese Summer School in 2002. The proceedings of that summer school are summarized electronically (as audio, video, transparencies and lecture notes, where available) on a DVD archive included with this volume, and are also available on the internet. However the organizers decided that a separate volume describing the 'state of the art in mathematical general relativity' would be useful, and this book is the result. It includes some material not covered in the school and excludes some school material which has been covered adequately elsewhere. About one fifth of the book is devoted to a survey of Smoothness at Null Infinity and the Structure of Initial Data by Helmut Friedrich. This is a modern study of gravitational radiation, and the analysis of Einstein's equations. It is extremely helpful to survey all of this material, including some of the latest developments, using a consistent notation. This article is strongly recommended to anyone hoping to gain a foothold in this area. Lars Andersson has surveyed, in The Global Existence Problem in General Relativity, some results and conjectures about the global properties of 3+1-dimensional spacetimes with a compact Cauchy surface. Again it is very useful to have essentially all of the known results presented in a consistent notation. This material is not on the DVD. Yvonne Choquet-Bruhat has contributed a long research paper, Future Complete U(1) Symmetric Einsteinian Spacetimes, the Unpolarized Case. There is a non-linear stability theorem due to her and Vincent Moncrief in which spacetime is of the form M x R where M is a circle bundle over a compact orientable surface of genus

  3. A background to risk analysis. Vol. 4

    International Nuclear Information System (INIS)

    This 4-volumes report gives a background of ideas, principles, and examples which might be of use in developing practical methods for risk analysis. Some of the risk analysis techniques described are somewhat experimental. The report is written in an introductory style, but where some point needs further justification or evaluation, this is given in the form of a chapter appendix. In this way, it is hoped that the report can serve two purposes, - as a basis for starting risk analysis work and as a basis for discussing effectiveness of risk analysis procedures. The report should be seen as a preliminary stage, prior to a program of industrial trials of risk analysis methods. Vol. 4 treats human error in plant operation. (BP)

  4. A background to risk analysis. Vol. 2

    International Nuclear Information System (INIS)

    This 4-volumes report gives a background of ideas, principles and examples which might be of use in developing practical methods for risk analysis. Some of the risk analysis techniques described are somewhat experimental. The report is written in an introductory style, but where some point needs further justification or evaluation, this is given in the form of a chapter appendix. In this way, it is hoped that the report can serve two purposes, - as a basis for starting risk analysis work and as a basis for discussing effectiveness of risk analysis procedures. The report should be seen as a preliminary stage, prior to a program of industrial trials of risk analysis methods. Vol. 2 treats generic methods of qualitative failure analysis. (BP)

  5. A background to risk analysis. Vol. 3

    International Nuclear Information System (INIS)

    This 4-volumes report gives a background of ideas, principles, and examples which might be of use in developing practical methods for risk analysis. Some of the risk analysis techniques described are somewhat experimental. The report is written in an introductory style, but where some point needs further justifi- cation or evaluation, this is given in the form of a chapter appenix. In this way, it is hoped that the report can serve two purposes, - as a basis for starting risk analysis work and as a basis for discussing effectiveness of risk analysis procedures. The report should be seen as a preliminary stage, prior to a program of industrial trials of risk analysis methods. Vol. 3 contains chapters on quantification of risk, failure and accident probability, risk analysis and design, and examles of risk analysis for process plant. (BP)

  6. A background risk analysis. Vol. 1

    International Nuclear Information System (INIS)

    This 4-volumes report gives a background of ideas, principles, and examples which might be of use in developing practical methods for risk analysis. Some of the risk analysis techniques, described are somewhat experimental. The report is written in an introductory style, but where some point needs further justification or evaluation, this is given in the form of a chapter appendix. In this way, it is hoped that the report can serve two purposes, - as a basis for starting risk analysis work and as a basis for discussing effectiveness of risk analysis procedures. The report should be seen as a preliminary stage, prior to a program of industrial trials of risk analysis methods. Vol. 1 contains a short history of risk analysis, and chapters on risk, failures, errors and accidents, and general procedures for risk analysis. (BP)

  7. Experimental radiotherapy and clinical radiobiology. Vol. 16

    International Nuclear Information System (INIS)

    The following topics were dealt with: DNA repair as therapeutical target in radiation therapy, biological imaging and tumor microenvironment, molecular factors of radiation therapy, molecular factors and modulation of the radiation reaction of normal tissues, experimental tumor therapy, EGFR inhibition, the endothel cell as primary target of radiation therapy, molecular and cellular foundations of the radiation biology of protons and ions. (HSI)

  8. A behaviorological thanatology: Foundations and implications

    OpenAIRE

    Fraley, Lawrence E.

    1998-01-01

    Foundation principles supporting a behaviorological thanatology are reviewed, including concepts of life, person, death, value, right, ethic, and body/person distinctions. These natural science foundations are contrasted with traditional foundations, and their respective implications are speculatively explored.

  9. Transfer, refurbishment and commissioning of a big bucket wheel excavator from the Czech Republic to Germany; Umsetzung, Modernisierung und Inbetriebnahme eines Grossschaufelradbaggers von Tschechien nach Deutschland

    Energy Technology Data Exchange (ETDEWEB)

    Gerlach, T. [TAKRAF GmbH, Lauchhammer (Germany); Werner, U. [MIBRAG GmbH, Technische Dienste - Maschinentechnik, Theissen (Germany)

    2007-03-15

    The Profen mine of the Mitteldeutsche Braunkohlengesellschaft mbh (MIBRAG) will be gradually transferred from Profen-South to Schwerzau mining field within the next few years. In order to compensate for the worse geological conditions it will be necessary to reduce unit costs at Schwerzau. Several variants of technical equipment were reviewed with respect to the large mine equipment at the new mining field. As a result, it seemed to be the most favorable solution to transfer and modernize a SRs 2000+VR bucket wheel excavator. In 2003 the transfer was started, in June 2006 the bucket wheel excavator with loading unit was accepted at the Schwerzau mining field. (orig.)

  10. Free Vibration and Dynamic Stability of Functionally Graded Material Plates on Elastic Foundation

    Directory of Open Access Journals (Sweden)

    I. Ramu

    2015-05-01

    Full Text Available The study of parametric resonance characteristics of functionally-graded material (FGM plates on elastic foundation is proposed under biaxial in plane periodic load. Finite element method in conjunction with Hamilton’s principle is utilised to establish the governing equations in a discrete form, Floquet’s theory was applied to determine the instability regions of FGM plate resting on elastic foundation. The effects of power law index, temperature rise, and foundation coefficients on the natural frequencies and dynamic stability of the plate have been examined in detail through parametric studies. The first two natural frequencies decrease with increase in temperature and power law index values, on the contrary, these two frequencies increase with increase in the foundation constants. Increase in power law index enhances the instability of the FGM plate. Increased foundation stiffness enhances the stability of the plate. Influence of shear layer constant is more dominant compared to the Winkler foundation constant.Defence Science Journal, Vol. 65, No. 3, May 2015, pp.245-251, DOI: http://dx.doi.org/10.14429/dsj.65.8621

  11. Foundation Networks and American Hegemony

    Directory of Open Access Journals (Sweden)

    Inderjeet Parmar

    2012-02-01

    Full Text Available The major American foundations constructed and sustained the rich texture of cooperative social, intellectual and political relations between key actors and institutions supportive of specific modes of thought that promoted US hegemony. Foundations also fostered and developed the attractive power-knowledge networks that not only radiated intellectual influence but also attracted some of the most creative minds. Finally, liberal internationalist foundations fostered globalism even when the American state was ‘isolationist’, and when US influence abroad unwelcome. Their significance in American hegemony building lay in their sustained, long-term cooperative relationship with the American state through which they helped build national, international and global institutions and networks. The latter process evidences the most significant impact of US foundations – the building of the domestic and international infrastructure for liberal internationalism which has transformed into a kind of “social neoliberalism”. Theoretical conclusions follow from these claims: the sustained and deep cooperation between the state and foundations suggests that we must revise our views of “how power works” in the United States and therefore influences its foreign relations. Therefore, the article shows that elite networks, consisting of state officials and private citizens are powerful means by which foreign policy shifts may be prepared, elite and mass opinion primed and mobilised, new consensus built, ‘old’ forces marginalised, and US hegemony constructed.

  12. Macroelement modeling of shallow foundations

    CERN Document Server

    Chatzigogos, Charisis; Salençon, J

    2008-01-01

    The paper presents a new macroelement model for shallow foundations. The model is defined through a non-linear constitutive law written in terms of some generalized force and displacement parameters. The linear part of this constitutive law comes from the dynamic impedances of the foundation. The non-linear part comprises two mechanisms. One is due to the irreversible elastoplastic soil behavior: it is described with a bounding surface hypoplastic model, adapted for the description of the cyclic soil response. An original feature of the formulation is that the bounding surface is considered independently of the surface of ultimate loads of the system. The second mechanism is the detachment that can take place at the soil-footing interface (foundation uplift). It is totally reversible and non-dissipative and can thus be described by a phenomenological non-linear elastic model. The macroelement is qualitatively validated by application to soil-structure interaction analyses of simple real structures.

  13. Sloan foundation nuclear education program

    International Nuclear Information System (INIS)

    The Alfred P. Sloan Foundation realized the time had come for a real and significant contribution to the enlightenment of university students concerning nuclear matters. The Sloan Foundation chose to educate the youth of four-year colleges and universities with a curriculum established with the resource information sieved from three workshops for professors in these institutions. The three workshops were organized by groups at Harvard-MIT (two-week Summer Program on Nuclear Weapons and Arms Control), the University of California, San Diego (two-week Summer Seminar on Global Security and Arms Control), and the University of Miami (one-week Winter Workshop on Enlightenment: The Best Security in a Nuclear-Armed World). In this report the author focuses on a unified presentation of the basic facts, aims, and results of the Sloan Foundation Nuclear Education Program based on three workshops directed by Jack Ruina (MIT), Herbert York (USCD), and Behram Kursunoglu (UM) and offered from 1983-1990

  14. IFRA Special Research Issue Vol. 1

    OpenAIRE

    Albert, Isaac Olawale; Bello, Raji A.; Ijaiya, Gafar .T.; Nwolise, Osisioma; Olaniyi, Rasheed; Osifodunrin, Paul; Ukah, Asonzeh F.-K.; Yoroms, Gani

    2013-01-01

    I lie French Institute for Research in Africa /IFRA). Ibadan. a foundation of the French govemment, is a non-profit institute set up to promote research in the social sciences and humanities. as well as enhance collaborative work between scholars in France and West Africa. It was established in 1990 and operates from the University of Ibadan. Nigeria, where it is housed by the Institute of African Studies. IFRA mandate includes subsiding research programs. granting research allowances to acad...

  15. IFRA Special Research Issue Vol. 2

    OpenAIRE

    Aderinto, Saheed; Enweremadu, David Uchenna; Garba, Ismail Bala; Ogunyemi, Biodun; Emmanuel O. Ojo; Olaniyi, Rasheed; Raheem, Kolawole

    2013-01-01

    The French Institute for Research in Africa (IFRA), Ibadan, a foundation of the French government, is a non-profit institute set up to promote research in the social sciences and humanities, as well as enhance collaborative work between scholars in France and West Africa. It was established in 1990 and operates from the University of Ibadan, Nigeria, where it is housed by the Institute of African Studies. IFRA mandate includes subsiding research programs, granting research allowances to acade...

  16. Professional Team Foundation Server 2010

    CERN Document Server

    Blankenship, Ed; Holliday, Grant; Keller, Brian

    2011-01-01

    Authoritative guide to TFS 2010 from a dream team of Microsoft insiders and MVPs!Microsoft Visual Studio Team Foundation Server (TFS) has evolved until it is now an essential tool for Microsoft?s Application Lifestyle Management suite of productivity tools, enabling collaboration within and among software development teams. By 2011, TFS will replace Microsoft?s leading source control system, VisualSourceSafe, resulting in an even greater demand for information about it. Professional Team Foundation Server 2010, written by an accomplished team of Microsoft insiders and Microsoft MVPs, provides

  17. Offshore Wind Turbine Foundation Design

    DEFF Research Database (Denmark)

    Passon, Patrik; Hvenekær Rasmussen, Jørgen

    wind-wave correlations are typically subjected to sequential load calculation approaches in an iterative and collaborative process between foundation designer and wind turbine manufacturer. Involvement of these different design parties may be motivated by various aspects such as introduction of state...... present thesis, how various aspects, such as the load calculation approach or the foundation model in the aeroelastic analysis, influence the dynamics and may thereby potentially introduce design load errors on the conservative or non-conservative side if not considered adequately. Different types of OWT...

  18. Professional Team Foundation Server 2012

    CERN Document Server

    Blankenship, Ed; Holliday, Grant; Keller, Brian

    2012-01-01

    A comprehensive guide to using Microsoft Team Foundation Server 2012 Team Foundation Server has become the leading Microsoft productivity tool for software management, and this book covers what developers need to know to use it effectively. Fully revised for the new features of TFS 2012, it provides developers and software project managers with step-by-step instructions and even assists those who are studying for the TFS 2012 certification exam. You'll find a broad overview of TFS, thorough coverage of core functions, a look at extensibility options, and more, written by Microsoft ins

  19. Physical foundations of technical acoustics

    CERN Document Server

    Malecki, I

    1969-01-01

    Physical Foundations of Technical Acoustics discusses theoretical foundations of acoustical engineering. It is not so much a technical compendium as a systematic statement of physical laws so conceived that technologists might find in it all the information they need to become acquainted with the physical meaning and mathematical expression of phenomena they encounter in their work. To facilitate the acquirement of notions, which lie beyond a layman's grasp, the plan of narration adopted consists in beginning with the simplest idealized cases and then gradually moving on to the truest possibl

  20. Restructuring the National Kidney Foundation.

    Science.gov (United States)

    Brand, J L

    2000-04-01

    The National Kidney Foundation reorganized its governance structure for the first time in its 50-year history. Following a 2-year review, which involved all constituents of the Foundation and took advantage of the advice of professional consultants, the NKF delegated governance responsibilities to the Board of Directors and created a General Assembly of affiliate leaders and professional staff. NKF national and affiliate leaders agreed on this course of action so that power would be more appropriately shared between the national organization and the affiliates and the overall organization would be better positioned to succeed in the NKF's first national fund raising campaign. PMID:10766005

  1. ITIL Foundation exam study guide

    CERN Document Server

    Gallacher, Liz

    2012-01-01

    Everything you need to prepare for the ITIL exam The ITIL (Information Technology Infrastructure Library) exam is the ultimate certification for IT service management. This essential resource is a complete guide to preparing for the ITIL Foundation exam and includes everything you need for success. Organized around the ITIL Foundation syllabus, the study guide addresses the ITIL Service Lifecycles, the ITIL processes, roles, and functions, and also thoroughly explains how the Service Lifecycle provides effective and efficient IT services. Offers an introduction to IT service management and ITI

  2. Soil-structure interaction Vol.2. Influence of lift-off

    International Nuclear Information System (INIS)

    This study has been performed for the Nuclear Regulatory Commission (NRC) by the Structural Analysis Division of Brookhaven National Laboratory (BNL). The study was conducted during the fiscal year 1985 on the program entitled 'Benchmarking of Structural Engineering Problems' sponsored by NRC. The program considered three separate but complementary problems, each associated with the soil-structure interaction (SSI) phase of the seismic response analysis of nuclear plant facilities. The reports are presented in three separate volumes. The general title for the reports is 'Soil Structure Interaction' with the following subtitles: Vol. 1 Influence of Layering by A.J. Philippacopoulos, Vol. 2 Influence of Lift-Off by C.A. Miller, Vol. 3 Influence of Ground Water by C.J. Costantino. The two problems presented in Volumes 2 and 3 were conducted at the City University of New York (CUNY) under subcontract to BNL. This report, Volume 2 of the report, presents a summary of the work performed defining the influence liftoff has on the seismic response of nuclear power plant structures. The standard lumped parameter analysis method was modified by representing the lumped soil/structure interaction horizontal and rocking dampers with distributed (over the foundation area) springs and dampers. The distributed springs and dampers are then modified so that they can only transmit compressive stresses. Additional interaction damping is included to account for the energy dissipated as a portion of the foundation which has separated comes back into contact with the soil. The validity of the model is evaluated by comparing predictions made with it to data measured during the SIMQUAKE II experiment. The predictions were found to correlate quite well with the measured data except for some discrepancies at the higher frequencies (greater than 10 cps). This discrepancy was attributed to the relatively crude model used for impact effects. Data is presented which identifies the peak

  3. But…What about My Epistemological Foundations?

    Science.gov (United States)

    Curin, Raquel Isabel Barrera

    2015-01-01

    At one time or another, all researchers in mathematics education must face the rather complex question of their epistemological foundations. Discussing epistemological foundations naturally leads to a conversation about theories. Theories and epistemological foundations work in a circular fashion: theories can have epistemological foundations and…

  4. Workshop Arboretum Volčji potok

    Directory of Open Access Journals (Sweden)

    Ana Kučan

    2012-01-01

    Full Text Available From its constitution onwards, the Volčji Potok Arboretum has been caught between various conflicting orientations. It is both a scientific, research and educational institution, and a cultural monument with exquisite garden and landscape design features and areas of great natural value and built cultural heritage, as well as commercial venue. At the same time, it functions as a park and an area for mass events, a garden centre and nursery. This variety of functions has helped Arboretum to survive the pressures of time; however, partial and uncoordinated interventions have threatened its original mission and its image and generated a number of conflicting situations. The workshop, organised on the initiative of the Institute for the Protection of Cultural Heritage of Slovenia, which involved students from the Faculty of Architecture and students from the Department of Landscape Architecture of the Biotechnical Faculty in mixed groups, generated eight proposals to solve some of the most urgent problems by introducing optimised development with clearly defined goals and priorities.

  5. The Foundation of Nea Paphos

    DEFF Research Database (Denmark)

    Bekker-Nielsen, Tønnes

    2000-01-01

    Traditionally it has been assumed that Nea Paphos was founded by king Nikokles, the last of the Kinyrad dynasty, around 320 BC. A critical reexamination of the evidence reveals this foundation date to be impossible; Nea Paphos was not founded in Nikokles' lifetime and probably not before 294 BC....

  6. Foundations of Responsibility for Children

    Science.gov (United States)

    Dillen, Annemie

    2008-01-01

    Children's vulnerability asks for people taking up responsibility for children. In this contribution, three different ways of thinking on foundations of (ethical and spiritual) responsibility for children are discussed, namely, a liberalist, a social-constructivist and a naturalist paradigm. The author argues that cultural and natural elements are…

  7. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology. Rather than

  8. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providingquality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college inAndhra Pradesh State,

  9. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>The Rural Development Foundation(RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology.Rather than using the

  10. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>The Rural Development Foundation(RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in Andhra

  11. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation (RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providingquality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in AndhraPradesh State,taking a unique holistic approach to education through innovative programs and methodology. Rather than using the con-

  12. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation(RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology.Rather than using the con-

  13. Behavior Modeling -- Foundations and Applications

    DEFF Research Database (Denmark)

    This book constitutes revised selected papers from the six International Workshops on Behavior Modelling - Foundations and Applications, BM-FA, which took place annually between 2009 and 2014. The 9 papers presented in this volume were carefully reviewed and selected from a total of 58 papers...

  14. Corporate Ownership by Industrial Foundations

    DEFF Research Database (Denmark)

    Thomsen, Steen

    1999-01-01

    relatively inefficient since they lack monitoring by residual claimants and access to equity finance from the stock market. Nevertheless, empirical research (Thomsen 1996) has found that Danish foundation-owned companies do no worse in terms of profitability and growth than companies with dispersed ownership...

  15. Student Alumni Associations and Foundations.

    Science.gov (United States)

    Alberger, Patricia L., Ed.

    Papers from a conference on student alumni programs and foundations are presented. Contents are as follows: "How Student Alumni Programs Can Serve Your Institution," by Larry Weiss; "How to Start a Student Alumni Organization," by William Harlan; "Getting the Right Students: How, When, and Where" (Harlan); "Building Your Budget From Scratch," by…

  16. Urban heritage, building maintenance: foundations

    NARCIS (Netherlands)

    Verhoef, L.G.W.

    1999-01-01

    What do we understand by the term 'foundations'? This general idea may embody the literal ' groundwork' that provides support for a building and may possibly include the entire structural works that serve to pre vent subsidence. Remarkably, in this definition the word 'groundwork' incorporates both

  17. Soils and Foundations: A Syllabus.

    Science.gov (United States)

    Long, Melvin J.

    The teaching guide and course outline for a 12-week course in soils and foundations is designed to help student technicians in a two-year associate degree civil engineering technology program to obtain entry level employment as highway engineering aides, soil testing technicians, soil mappers, or construction inspectors. The seven teaching units…

  18. Does Macroeconomics Need Microeconomic Foundations?

    OpenAIRE

    Da Silva, Sergio

    2009-01-01

    The author argues that it is microeconomics that needs foundations, not macroeconomics. Preferences need to be built on biology, and, in particular, on neuroscience. In contrast, macroeconomics could benefit from rationalizations of aggregate economic phenomena by non-equilibrium statistical physics.

  19. Team Foundation Server 2013 customization

    CERN Document Server

    Beeming, Gordon

    2014-01-01

    This book utilizes a tutorial based approach, focused on the practical customization of key features of the Team Foundation Server for collaborative enterprise software projects.This practical guide is intended for those who want to extend TFS. This book is for intermediate users who have an understanding of TFS, and basic coding skills will be required for the more complex customizations.

  20. Neutron Reference Benchmark Field Specifications: ACRR Polyethylene-Lead-Graphite (PLG) Bucket Environment (ACRR-PLG-CC-32-CL).

    Energy Technology Data Exchange (ETDEWEB)

    Vega, Richard Manuel [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Parm, Edward J. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Griffin, Patrick J. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Vehar, David W. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

    2015-07-01

    This report was put together to support the International Atomic Energy Agency (IAEA) REAL- 2016 activity to validate the dosimetry community’s ability to use a consistent set of activation data and to derive consistent spectral characterizations. The report captures details of integral measurements taken in the Annular Core Research Reactor (ACRR) central cavity with the Polyethylene-Lead-Graphite (PLG) bucket, reference neutron benchmark field. The field is described and an “a priori” calculated neutron spectrum is reported, based on MCNP6 calculations, and a subject matter expert (SME) based covariance matrix is given for this “a priori” spectrum. The results of 37 integral dosimetry measurements in the neutron field are reported.

  1. DETERMINING THE REACTIONS OF BALLS SLEWING BEARING MOUNTED IN WORKING STRUCTURES OF THE SINGLE-BUCKET EXCAVATOR

    Directory of Open Access Journals (Sweden)

    Ludwik KANIA

    2014-06-01

    Full Text Available In the article the problem of modeling methodology slewing bearings by take into account partial or complete structures of housing in the working machine is presented. The structures of two exemplary models are described. The object of the study was single-bucket excavator caterpillar type F250H. Basic parameters of analyzed bearing are presented. The finite element method has been used to the modeling procedure. The calculation which is needed to calculate the force loading of balls slewing bearing has been done using the ADINA program. The way of calculating single-row ball slewing bearing rings which is presented in this paper, used the analytic correlation which determine the permissible load of contact zone (ball-bearing race in slewing bearings too. The chosen distributions of reactions loading on the balls are presented. The results are shown as a graph

  2. AUTOMATED DYNAMIC LOAD CONTROL BY ELECTROMECHANICAL SYSTEMS OF A BUCKET-CHAIN EXCAVATOR IN THE COURSE OF SCOOPING

    Directory of Open Access Journals (Sweden)

    Khayrullin Rustam Zinnatullovich

    2012-10-01

    Full Text Available Methods and algorithms of control of the tension of lifting and towing ropes of bucket-chain excavators are proposed in the article. They are based on the non-linear dependence of the current path length and intensity of excavation efforts. Three automatic control modes, including scooping, correction signals and automatic overload protection, are implemented. Two independent control loops in charge of tension of lifting and towing ropes are developed. The proposed automated control system may be integrated both into new bucket-chain excavators and into those excavators that are already in operation. The new system does not require any substantial alterations in electric drive control systems in charge of lifting and towing, if integrated into excavators in operation. The author has performed the non-linearity analysis; he has also designed, developed and implemented the models that are capable of taking an adequate account of the system peculiarities identified in the course of the project implementation. The system parameters are adjustable to specific conditions of the excavator operation, including the hardness of the rock extracted by the excavator, etc. The automatic overload control system attached to the electric drives in control of lifting and towing ensures maximal responsiveness of the system based on the commutation-related limitations imposed by power-driven elements, maximal over-control values and variability of the transition process. Prevention of any rope slacks in the course of scooping of any hard rock is assured by the loop of regulation of minimal tension of lifting cables. The service life of lifting and towing ropes goes up by eight to ten weeks, if the system proposed by the author is implemented.

  3. Foundations of scientific research (Foundations of Research Activities)

    OpenAIRE

    Glazunov, N. M.

    2012-01-01

    During years 2008 to 2011 author gives several courses on Foundations of Scientific Research at Computer Science Faculty of the National Aviation University in Kiev. This text presents material to lectures of the courses. It consists of 18 sections and some ideas of the manual can be seen from their titles. These include: General notions about scientific research. Ontologies and upper ontologies. Ontologies of object domains. Examples of Research Activity. Some Notions of the Theory of Finite...

  4. Linear programming foundations and extensions

    CERN Document Server

    Vanderbei, Robert J

    2001-01-01

    Linear Programming: Foundations and Extensions is an introduction to the field of optimization. The book emphasizes constrained optimization, beginning with a substantial treatment of linear programming, and proceeding to convex analysis, network flows, integer programming, quadratic programming, and convex optimization. The book is carefully written. Specific examples and concrete algorithms precede more abstract topics. Topics are clearly developed with a large number of numerical examples worked out in detail. Moreover, Linear Programming: Foundations and Extensions underscores the purpose of optimization: to solve practical problems on a computer. Accordingly, the book is coordinated with free efficient C programs that implement the major algorithms studied: -The two-phase simplex method; -The primal-dual simplex method; -The path-following interior-point method; -The homogeneous self-dual methods. In addition, there are online JAVA applets that illustrate various pivot rules and variants of the simplex m...

  5. Foundation Design of Caisson Breakwaters

    DEFF Research Database (Denmark)

    Groot, M.B. De; Andersen, K.H.; Burcharth, H. F.;

    1996-01-01

    This document has been prepared as a part of the dissemination of results of the MCS-Project (Contract No. MAS2-CT92-0047) which was led by the University of Hannover (Coordinator: H. Oumeraci) within the 2nd Research Programme of the European Union (EU) on Marine and Science Technology. The...... and University of Essen. The foundation aspects of caisson breakwaters are described. Special attention is paid to the dynamic response of the foundation to wave impacts, generation of pore pressures in the subsoil, degradation by repetitive loading and the interaction between all these aspects....... Several design levels are distinguished, varying from feasibility studies to research. The feasibility and preliminary design levels are discussed extensively, including a description of the most relevant models and illustrations with the help of example structures. The document may serve as a tool for...

  6. Philosophical foundations of human rights

    CERN Document Server

    Liao, Matthew S

    2015-01-01

    What makes something a human right? What is the relationship between the moral foundations of human rights and human rights law? What are the difficulties of appealing to human rights? This book offers the first comprehensive survey of current thinking on the philosophical foundations of human rights. Divided into four parts, this book focusses firstly on the moral grounds of human rights, for example in our dignity, agency, interests or needs. 'Secondly, it looks at the implications that different moral perspectives on human rights bear for human rights law and politics. Thirdly, it discusses specific and topical human rights including freedom of expression and religion, security, health and more controversial rights such as a human right to subsistence. The final part discusses nuanced critical and reformative views on human rights from feminist, Kantian and relativist perspectives among others. The essays represent new and canonical research by leading scholars in the field. Each part is comprised of a set...

  7. Urban heritage, building maintenance: foundations

    OpenAIRE

    Verhoef, L.G.W.

    1999-01-01

    What do we understand by the term 'foundations'? This general idea may embody the literal ' groundwork' that provides support for a building and may possibly include the entire structural works that serve to pre vent subsidence. Remarkably, in this definition the word 'groundwork' incorporates both the 'ground' itself and the structural 'works'. Ground itself is a general word for the usually layered formations containing elements such as sand, clay peat and silt deposited beside each other o...

  8. EVOLUTIONARY FOUNDATIONS FOR MOLECULAR MEDICINE

    OpenAIRE

    Nesse, Randolph M.; Ganten, Detlev; Gregory, T. Ryan; Omenn, Gilbert S.

    2012-01-01

    Evolution has long provided a foundation for population genetics, but many major advances in evolutionary biology from the 20th century are only now being applied in molecular medicine. They include the distinction between proximate and evolutionary explanations, kin selection, evolutionary models for cooperation, and new strategies for tracing phylogenies and identifying signals of selection. Recent advances in genomics are further transforming evolutionary biology and creating yet more oppo...

  9. Cognitive Foundations for Visual Analytics

    Energy Technology Data Exchange (ETDEWEB)

    Greitzer, Frank L.; Noonan, Christine F.; Franklin, Lyndsey

    2011-02-25

    In this report, we provide an overview of scientific/technical literature on information visualization and VA. Topics discussed include an update and overview of the extensive literature search conducted for this study, the nature and purpose of the field, major research thrusts, and scientific foundations. We review methodologies for evaluating and measuring the impact of VA technologies as well as taxonomies that have been proposed for various purposes to support the VA community. A cognitive science perspective underlies each of these discussions.

  10. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology. Rather than using the conventional method of rote memorization,RDF focuses on cultivating critical thinking skills and

  11. Windows Presentation Foundation a kytara

    OpenAIRE

    KRAJČOVIČ, Jan

    2010-01-01

    This work deals with general overview about technology of Windows Presentation Foundation which is specialized for creating aplications with user friendly interface designated for operating systems Windows Vista (or later). By using technology of WPF author of this thesis created tutorial for playing guitar. Few of students will test the program. Main goal of this thesis is evaluation of testing student´s achieved results.

  12. Foundation Trusts: A Retrospective Review

    OpenAIRE

    Chris Bojke; Maria Goddard

    2010-01-01

    There is limited research evidence on foundation trusts (FTs) and much of the available material is in the form of commentary or the regular reports from Monitor. Comparative research is made difficult through lack of a counter-factual and robust methods are required to overcome bias. Summary points from the literature and from some initial analysis of Monitor reports that we have undertaken for this review are given below. Future policy and research issues are highlighted in the main report.

  13. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology. Rather than using the conventional method of rote memorization,RDF focuses on cultivating critical thinking skills and encouraging students to

  14. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    <正>The Rural Development Foundation(RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology.Rather than using the conventional method of rote memorization,RDF focuses on cultivating critical thinking skills and encouraging students to understand and

  15. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation(RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children.RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology.Rather than using the conventional method of rote memorization,RDF focuses on cultivating critical thinking skills and encouraging students to understand and

  16. Energy Foundations - Potential for Ireland

    OpenAIRE

    Hemmingway, Phil; Long, Michael

    2011-01-01

    With one of the highest energy dependencies in the European Union, Ireland must adapt quickly to renewable energy technologies or risk paying the penalty in the form of high energy prices in years to come. Escalating energy costs have led to a renewed interest in alternative energy technologies and ground source energy is one such resource which is being increasingly considered. This paper presents some of the practical considerations of energy foundations, evidenced from the i...

  17. To Foundations of Classical Electrodynamics

    OpenAIRE

    Bessonov, E. G.

    1997-01-01

    In the present work foundations of the law of the energy conservation and the introduction of particles in the classical electrodynamics are discussed. We pay attention to a logic error which takes place at an interpretation of the Poynting's theorem as the law of conservation of energy. It was shown that the laws of conservation of energy and momentum of the system of electromagnetic fields and charged particles does not follow from the equations of electrodynamics and the violation of these...

  18. Choice of Law: New Foundations

    OpenAIRE

    Guzman, Andrew

    2000-01-01

    This Article develops a new approach to choice of law. Founded on economic principles rather than the notions of sovereignty that are typically used by choice of law scholars, it seeks to build new foundations for choice of law scholarship. The analysis in the Article makes it possible to discuss alternative choice of law rules in terms of their impact on the well-being of individuals. In other words, it makes it possible to consider questions of efficie...

  19. Windows Presentation Foundation & Data Binding

    OpenAIRE

    JANDA, Vilém

    2010-01-01

    The aim of this work is a course in the form of e-learning study materials for the interpretation of technology Data Binding in Windows Presentation Foundation (WPF). In the first, mostly theoretical part will be done a description and interpretation of the elements of technology, focusing on WPF Data Binding. In the second part, is available methodology and training course with their own interpretive audio-visual files for self-study. The lectures are supplemented by solved examples, and exa...

  20. Progeria Research Foundation Diagnostic Testing Program

    Science.gov (United States)

    ... Testing The PRF Diagnostic Testing Program The Progeria Research Foundation, in association with a CLIA-approved diagnostics lab, ... please contact Dr. Leslie Gordon at The Progeria Research Foundation at info@progeriaresearch.org quick links Donate Now ...

  1. Run-up on Offshore Windturbine Foundations

    DEFF Research Database (Denmark)

    De Vos, Leen; Larsen, Brian Juul; Frigaard, Peter

    For the present report a testprogramme has been performed to determine the run-up on offshore windturbine foundations.......For the present report a testprogramme has been performed to determine the run-up on offshore windturbine foundations....

  2. Temperature profile data from surface seawater intake, bucket, and XBT casts in a world wide distribution from 1996-03-01 to 1997-01-03 (NODC Accession 9700036)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile data were collected using surface seawater intake, bucket, and XBT casts from several vessels in a world wide distribution from March 1, 1996 to...

  3. Compressor Foundation Analysis Tool(COFANTO)

    NARCIS (Netherlands)

    Eijk, A.; Lentzen, S.S.K; Zuada Coelho, B.E.; Galanti, F.M.B.

    2012-01-01

    Reciprocating compressors are generally supported on a heavy concrete foundation. In spite of the large inertia and stiffness of the foundation, problems can occur due to interaction between the mechanical installation and the foundation. Two types of problems may occur. In the first type, the inter

  4. Beyond Dependency: Strategies for Saving Foundations

    Science.gov (United States)

    Schutz, Aaron; Butin, Dan

    2013-01-01

    The foundations field cannot sustain itself in its present condition. A range of complex forces have combined to marginalize foundations over the past few decades. The decline of this field as a separate discipline in schools of education has been abetted by the fact that foundations is generally a "service provider" to other programs.…

  5. Grantmaking to School Districts: Lessons for Foundations

    Science.gov (United States)

    Coffman, Julia; Weiss, Heather; Harris, Erin; Little, Priscilla M. D.

    2010-01-01

    This brief offers lessons and best practices from foundations across the country on grantmaking to school districts. It offers advice to foundations that are considering school district investments for the first time. It also offers a useful "check" to more experienced foundations that want to examine their thinking and approaches against the…

  6. Philanthropy and Private Foundations: Expanding Revenue Sources

    Science.gov (United States)

    Drummer, Carlee; Marshburn, Roxann

    2014-01-01

    As community colleges seek new revenue streams, philanthropic organizations, including college foundations and private funders, have already begun to influence both revenues and college programming. This chapter discusses the current role of philanthropy, especially private foundations such as the Lumina Foundation for Education and the Bill and…

  7. Foundation-Level Dyslexia: Assessment and Treatment.

    Science.gov (United States)

    Evans, Henryka M.; Seymour, Philip H. K.

    1999-01-01

    An assessment of foundation processes was administered to 51 Scottish children with reading difficulties and to 56 reading-level-matched controls. Results suggested the foundation is in place by the reading age of 7 years and that foundation-level dyslexia is identifiable in children with reading difficulty whose reading ages fall below this…

  8. Dynamics of structures '89. Vol. 1 and 2

    International Nuclear Information System (INIS)

    The proceedings, comprising 3 volumes published by the Plzen Centre of the Czechoslovak Society for Science and Technology (Vol. 1 and 2) and by Skoda Works in Plzen (Vol. 3), contain 107 papers, out of which 8 fall within the INIS Subject Scope; these deal with problems related to the earthquake resistance of nuclear power plants. Attention is paid to the evaluation of seismic characteristics of nuclear power plant equipment, to the equipment testing and to calculations of its dynamic characteristics under simulated seismic stress. (Z.M.)

  9. Electromagnetic foundations of electrical engineering

    CERN Document Server

    Faria, J A Brandao

    2008-01-01

    The applications of electromagnetic phenomena within electrical engineering have been evolving and progressing at a fast pace. In contrast, the underlying principles have been stable for a long time and are not expected to undergo any changes. It is these electromagnetic field fundamentals that are the subject of discussion in this book with an emphasis on basic principles, concepts and governing laws that apply across the electrical engineering discipline. Electromagnetic Foundations of Electrical Engineering begins with an explanation of Maxwell's equations, from which the fundament

  10. Foundations of wireless and electronics

    CERN Document Server

    Scroggie, M G

    1984-01-01

    Foundations of Wireless and Electronics, 10th Edition covers the cathode-ray and microwave tubes; modern pulse methods; f.m. detectors; basic processes of transmission; and reception, computers, and non-sinusoidal signal amplification. The book starts by giving a general overview of a complete electronic system, electricity and circuits, capacitance, and inductance. The text also discusses alternating currents (a.c.), including the frequency and phase of a.c.; the capacitance and inductance in a.c. circuits; and the capacitance and inductance in a series. Diodes, triode, transistor equivalent

  11. Quantum mechanics foundations and applications

    CERN Document Server

    Swanson, Donald Gary

    2006-01-01

    Progressing from the fundamentals of quantum mechanics (QM) to more complicated topics, Quantum Mechanics: Foundations and Applications provides advanced undergraduate and graduate students with a comprehensive examination of many applications that pertain to modern physics and engineering.Based on courses taught by the author, this textbook begins with an introductory chapter that reviews historical landmarks, discusses classical theory, and establishes a set of postulates. The next chapter demonstrates how to find the appropriate wave functions for a variety of physical systems in one dimens

  12. Letter to European Science Foundation

    Directory of Open Access Journals (Sweden)

    2006-06-01

    Full Text Available Département de Linguistique AppliquéeEt de Didactique des languesDirecteur : Claude Springerhttp://dladl.u-strasbg.fr Dr. Rüdiger KleinEUROCORES Programme CoordinatorEuropean Science Foundation1, quai Lezay MarnésiaBP 90015F-67080 Strasbourg Cedex Strasbourg, le 22 mai 2006 Dear colleague, The Editorial Board of the journal ALSIC (Apprentissage des langues et système d’information et de communication which comprises 45 people from universities in 9 different countries was astonished to note...

  13. Foundations of combinatorics with applications

    CERN Document Server

    Bender, Edward A

    2006-01-01

    This introduction to combinatorics, the foundation of the interaction between computer science and mathematics, is suitable for upper-level undergraduates and graduate students in engineering, science, and mathematics.The four-part treatment begins with a section on counting and listing that covers basic counting, functions, decision trees, and sieving methods. The following section addresses fundamental concepts in graph theory and a sampler of graph topics. The third part examines a variety of applications relevant to computer science and mathematics, including induction and recursion, sorti

  14. Ensemble Methods Foundations and Algorithms

    CERN Document Server

    Zhou, Zhi-Hua

    2012-01-01

    An up-to-date, self-contained introduction to a state-of-the-art machine learning approach, Ensemble Methods: Foundations and Algorithms shows how these accurate methods are used in real-world tasks. It gives you the necessary groundwork to carry out further research in this evolving field. After presenting background and terminology, the book covers the main algorithms and theories, including Boosting, Bagging, Random Forest, averaging and voting schemes, the Stacking method, mixture of experts, and diversity measures. It also discusses multiclass extension, noise tolerance, error-ambiguity a

  15. About The Rural Development Foundation

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>The Rural Development Foundation (RDF),founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one junior college in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and methodology. Rather than using the conventional method of rote memorization,RDF focuses on cultivating critical thinking skills and encouraging students to understand and apply concepts. RDF does this through special programs such as Social Awareness,Youth Empowerment,

  16. Microsoft Windows Identity Foundation Cookbook

    CERN Document Server

    Chanda, Sandeep

    2012-01-01

    This book is written in a simple, easy to understand format, with lots of screenshots and step-by-step explanations.If you are a .NET developer looking forward to building access control in your applications using claims-based identity, then this is the best guide for you. This book is also an excellent choice for professionals and IT administrators trying to enable Single Sign-On across applications within the enterprise, and in the cloud spanning interoperable platforms. No previous knowledge on the subject is necessary, however a strong foundation in the C# programming language and .NET Fra

  17. Foundations of compositional model theory

    Czech Academy of Sciences Publication Activity Database

    Jiroušek, Radim

    2011-01-01

    Roč. 40, č. 6 (2011), s. 623-678. ISSN 0308-1079 R&D Projects: GA MŠk 1M0572; GA ČR GA201/09/1891; GA ČR GEICC/08/E010 Institutional research plan: CEZ:AV0Z10750506 Keywords : multidimensional probability distribution * conditional independence * graphical Markov model * composition of distributions Subject RIV: IN - Informatics, Computer Science Impact factor: 0.667, year: 2011 http://library.utia.cas.cz/separaty/2011/MTR/jirousek-foundations of compositional model theory.pdf

  18. Foundations of cryptography a primer

    CERN Document Server

    Goldreich, Oded

    2014-01-01

    Foundations of Cryptography surveys the main paradigms, approaches and techniques used to conceptualize, define and provide solutions to natural cryptographic problems. The author starts by presenting some of the central tools; that is, computational difficulty (in the form of one-way functions), pseudorandomness, and zero-knowledge proofs. Based on these tools, the emphasis is shifted to the treatment of basic applications such as encryption and signature schemes as well as the design of general secure cryptographic protocols. The author has created a unique overview that includes well over 1

  19. Proceedings of the 1. Arabic conference on chemical applications (Chemia 2). Vol. 2

    International Nuclear Information System (INIS)

    The conference of chemical application was held on 1-5 Nov 1997 in Cairo, This vol.2 contains of chemical application on nuclear materials. Studies on these vol.This second volume covers papers presented on the subjects

  20. Proceedings of the second international conference on environmental impact assessment of all economical activities. Vol. 1

    International Nuclear Information System (INIS)

    Proceedings of the conference consist of 3 volumes: Vol. 1 - 'Environmental Impact Assessment of all Economical Activities including Industry'; Vol. 2 - 'Air Pollution Control and Prevention'; Vol. 3 - Waste Management and Environmental Problems in Construction Industry'. Out of 32 papers contained in Vol. 1, 2 were inputted to INIS. They deal with models of radionuclide transport in food chains and the use of aerial monitoring in the study of environmental contamination. (Z.S.)

  1. Proceedings of the second international conference on environmental impact assessment of all economical activities. Vol. 2

    International Nuclear Information System (INIS)

    Proceedings of the conference consist of 3 volumes: Vol. 1 - 'Environmental Impact Assessment of all Economical Activities including Industry'; Vol. 2 - 'Air Pollution Control and Prevention'; Vol. 3 - Waste Management and Environmental Problems in Construction Industry'. Out of 32 papers contained in Vol. 2, 4 were inputted to INIS. They deal with nuclear fusion as a potential energy source, with environmental aspects of disposal of ashes from power plants in the Czech Republic, and with land reclamation after mining activities. (Z.S.)

  2. Superconductivity. Vol. 1. Conventional and unconventional superconductors

    International Nuclear Information System (INIS)

    Conceived as the definitive reference in a classic and important field of modern physics, this extensive and comprehensive handbook systematically reviews the basic physics, theory and recent advances in the field of superconductivity. Leading researchers, including Nobel laureates, describe the state-of-the-art in conventional and unconventional superconductors at a particularly opportune time, as new experimental techniques and field-theoretical methods have emerged. In addition to full-coverage of novel materials and underlying mechanisms, the handbook reflects continued intense research into electron-phonon based superconductivity. Considerable attention is devoted to high-Tc superconductivity, novel superconductivity, including triplet pairing in the ruthenates, novel superconductors, such as heavy-Fermion metals and organic materials, and also granular superconductors. What's more, several contributions address superconductors with impurities and nanostructured superconductors. Important new results on current problems are presented in a manner designed to stimulate further research. Numerous illustrations, diagrams and tables make this book especially useful as a reference work for researchers, students and teachers. Treating the entire superconductivity field, this unparalleled reference resource carefully blends theoretical studies with experimental results to provide the scientist and engineers an indispensable foundation for further research. (orig.)

  3. Building Multi-Discipline, Multi-Format Digital Libraries Using Clusters and Buckets. Degree rewarded by Old Dominion Univ. on Aug. 1997

    Science.gov (United States)

    Nelson, Michael L.

    1997-01-01

    Our objective was to study the feasibility of extending the Dienst protocol to enable a multi-discipline, multi-format digital library. We implemented two new technologies: cluster functionality and publishing buckets. We have designed a possible implementation of clusters and buckets, and have prototyped some aspects of the resultant digital library. Currently, digital libraries are segregated by the disciplines they serve (computer science, aeronautics, etc.), and by the format of their holdings (reports, software, datasets, etc.). NCSTRL+ is a multi-discipline, multi-format digital library (DL) prototype created to explore the feasibility of the design and implementation issues involved with created a unified, canonical scientific and technical information (STI) DL. NCSTRL+ is based on the Networked Computer Science Technical Report Library (NCSTRL), a World Wide Web (WWW) accessible DL that provides access to over 80 university departments and laboratories. We have extended the Dienst protocol (version 4.1.8), the protocol underlying NCSTRL, to provide the ability to cluster independent collections into a logically centralized DL based upon subject category classification, type of organization, and genre of material. The concept of buckets provides a mechanism for publishing and managing logically linked entities with multiple data formats.

  4. Issues on sale with Flora Malesiana foundation

    NARCIS (Netherlands)

    NN,

    1959-01-01

    Backer, C.A.: Butch-English taxonomic-botanical vocabulary. ed. 2. Bound. Dfl. 12,50; US$ 3. Steenis, C.G.G.J. van. Specific and infraspecific delimitation (repr. from Fl. Mal. vol. 5). Dfl. 7,50; US$ 2.

  5. The Astrometric Foundation of Astrophysics

    CERN Document Server

    Høg, Erik

    2014-01-01

    Astrophysical studies require a knowledge of very accurate positions, motions and distances of stars. A brief overview is given of the significance and development of astrometry by ESA's two astrometric satellites, Hipparcos and Gaia, launched in respectively 1989 and 2013. The astrometric foundation of all branches of astronomy from the solar system and stellar systems to compact galaxies, quasars and dark matter is being revolutionized by the observations from these satellites. The future of fundamental astrometry must be considered in a time frame of 50 years, therefore science issues for a Gaia successor mission in twenty years are discussed in an extensive report: "Absolute Astrometry in the Next 50 Years" available at https://dl.dropbox.com/u/49240691/GaiaRef.pdf.

  6. Transactions of the 9th international conference on structural mechanics in reactor technology. Vol. K1 and K2

    International Nuclear Information System (INIS)

    Division K is traditionally a division which attracts many contributions. The area to be covered by Division K of SMIRT-Conferences can be briefly summarized as follows: Selection of reference ground motion; transmission to the foundations, structures and components. Experimental and analytical methods for the seismic response of structures; soil-structure interaction. Seismic design concepts; qualification of systems and equipments, seismic isolation systems. More than 180 papers have been submitted for publication and are included in this volume of the Transactions. Some delayed contributions to the scientific program of Division K will be published in Vol. A of the Transactions. The importance of Division K is further underlined by the fact that joint sessions have been organized with Divisions E, D, H, J, and M. All contributions to these joint sessions are published in the corresponding volumes. 183 papers are separately indexed in the database. (orig./HP)

  7. Mooring Anchors for Marine Renewable Energy Foundations

    OpenAIRE

    Stevens, Robert F.; Rahim, Amir

    2014-01-01

    With the increasing use of offshore wind turbines, it has become necessary to explore deep-water sites for locating wind farms. Floating turbines are an ideal choice for these locations. Such turbines are anchored with mooring chains to the sea floor using suction anchors, driven piles or gravity foundations. This paper presents design methods for these types of foundations. Moored gravity foundations have been used for the much larger floating oil and gas installations. These concrete founda...

  8. The Heart and Stroke Foundation of Ontario

    OpenAIRE

    Graham, Anthony F.

    1987-01-01

    The Heart and Stroke Foundation of Ontario is a non-profit volunteer-driven organization that is active in supporting research and education programs with the ultimate goal of reducing death and disability from heart disease and stroke. The Foundation has over 65 chapters across the province, a full-time staff of 130, and over 70,000 volunteers involved in various programs and fund-raising activities. Several of the Foundation's programs offer direct assistance to family physicians and their ...

  9. Digital system design with Xilinx foundation

    International Nuclear Information System (INIS)

    This book consists seven chapters, which are introduction of ASIC design, structure of Xilinx spartan and spartan-XL, digital logic circuit design by Xilinx Foundation, qualification for Xilinx foundation, structure of ASIC Training Kit, examples of digital logic circuit design with Xilinx Foundation and examples of digital logic circuit design with Training kit. It has example of package use and Xilinx spartan XCS-40 data sheet in the appendix.

  10. Industrial Foundations in the Danish Economy

    DEFF Research Database (Denmark)

    Thomsen, Steen

    Industrial Foundations (foundations that own business companies) are found around the world e.g in Northern Europe, Germany, the US and India, but nowhere do they appear to be as economically important as in Denmark. In this paper we review their share of the Danish economy. We find that foundation......-owned companies account for 5-10% of the Danish economy depending on measurement. However, they constitute the bulk of Danish stock market capitalization and R&D expenditure, and they also contribute disproportionally to international business activity. Finally the industrial foundations make charitable donations...... of approximately 0.5% of Danish GDP, primarily to research....

  11. Technical note on measuring run-off dynamics from pavements using a new device: the weighable tipping bucket

    Directory of Open Access Journals (Sweden)

    T. Nehls

    2010-12-01

    Full Text Available Due to climate change, cities need to adapt to changing rainfall and rainwater run-off dynamics. In order to develop an corresponding process based run-off model for pavements, we had to improve the measurement technique to detect run-off dynamics in an appropriate high resolution.

    Traditional tipping buckets (TB have a comparable low volume resolution, capable to quantify the highest intensities in a range of expected flows. This results in varying temporal resolutions for varying flow intensities, especially in low resolutions for small flow events. Therefore, their applicability for run-off measurements and other hydrological process studies is limited, especially when the dynamics of both small and big flow events shall be described.

    We improved a TB by coupling it to a balance and called it weighable tipping bucket (WTB. This paper introduces the device set up and the according data processing concept. The improved volume and temporal resolution of the WTB are demonstrated. A systematic uncertainty of TB measurements compared to WTB measurements is calculated. The impact of that increased resolution on our understanding of run-off dynamics from paved urban soils are discussed, exemplary for the run-off and the surface storage of a paved urban soil.

    The study was conducted on a permeably paved lysimeter situated in Berlin, Germany. Referring to the paved surface, the TB has a resolution of 0.1 mm, while the WTB has a resolution of 0.001 mm. The temporal resolution of the WTB is 3 s, the TB detects individual tippings with 0.4 s between them. Therefore, the data processing concept combines both the benefits of the balance to measure small intensities with that of the TB to measure high flow intensities.

    During a five months period (July to November 2009 154 rain events were detected. Accordingly, the TB and WTB detected 47 and 121 run-off events. The total run-off was 79.6 mm measured by the WTB which was

  12. Foundations of support constraint machines.

    Science.gov (United States)

    Gnecco, Giorgio; Gori, Marco; Melacci, Stefano; Sanguineti, Marcello

    2015-02-01

    The mathematical foundations of a new theory for the design of intelligent agents are presented. The proposed learning paradigm is centered around the concept of constraint, representing the interactions with the environment, and the parsimony principle. The classical regularization framework of kernel machines is naturally extended to the case in which the agents interact with a richer environment, where abstract granules of knowledge, compactly described by different linguistic formalisms, can be translated into the unified notion of constraint for defining the hypothesis set. Constrained variational calculus is exploited to derive general representation theorems that provide a description of the optimal body of the agent (i.e., the functional structure of the optimal solution to the learning problem), which is the basis for devising new learning algorithms. We show that regardless of the kind of constraints, the optimal body of the agent is a support constraint machine (SCM) based on representer theorems that extend classical results for kernel machines and provide new representations. In a sense, the expressiveness of constraints yields a semantic-based regularization theory, which strongly restricts the hypothesis set of classical regularization. Some guidelines to unify continuous and discrete computational mechanisms are given so as to accommodate in the same framework various kinds of stimuli, for example, supervised examples and logic predicates. The proposed view of learning from constraints incorporates classical learning from examples and extends naturally to the case in which the examples are subsets of the input space, which is related to learning propositional logic clauses. PMID:25380338

  13. Neurobehavioral foundation of environmental reactivity.

    Science.gov (United States)

    Moore, Sarah R; Depue, Richard A

    2016-02-01

    Sensitivity to environmental context has been of interest for many years, but the nature of individual differences in environmental sensitivity has become of particular focus over the past 2 decades. What is particularly uncertain are the neural variables and processes that mediate the effects of environment on developmental outcomes. Accordingly, we provide a neurobehavioral foundation of reactivity to the environment in several steps. First, the different patterns of environmental sensitivity are defined to identify the significant factors involved in the manifestation of these patterns. Second, we focus on neurobiological reactivity as the construct underlying variation in sensitivity to the environment by (a) providing an organizing threshold model of elicitation of neurobiology by environmental context; and (b) integrating the literature on 2 sets of neuromodulators in terms of each modulator's (a) contribution to neural and behavioral reactivity to stimulation, and (b) relation to emotional-motivational systems (dopamine, opiates and oxytocin, corticotropin-releasing hormone) or the general modulation of those systems (serotonin, norepinephrine, and GABA). Discussion concludes with (a) a comprehensive neurobehavioral framework of environmental reactivity based on a combinatorial model of a supertrait, (b) methodological implications of the model, and (c) a developmental perspective on environmental reactivity. PMID:26479069

  14. Relativistic navigation a theoretical foundation

    CERN Document Server

    Turyshev, S G

    1996-01-01

    We present a theoretical foundation for relativistic astronomical measurements in curved space-time. In particular, we discuss a new iterative approach for describing the dynamics of an astronomical N-body system. To do this, we generalize the Fock-Chandrasekhar method of the weak-field and slow-motion approximation (WFSMA) and develop a theory of relativistic reference frames (RF) for a gravitationally bounded many-extended-body problem. In any proper RF constructed in the immediate vicinity of an arbitrary body, the N-body solutions of the gravitational field equations are presented as a sum of the Riemann-flat inertial space-time, the gravitational field generated by the body itself, the unperturbed solutions for each body in the system transformed to the coordinates of this proper RF, and the gravitational interaction term. We develop the basic concept of a general theory of the celestial RFs applicable to a wide class of metric theories of gravity with an arbitrary model of matter distribution. We apply ...

  15. Stress tomography : monitoring dam foundation

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez, A. [GeoConsult Inc., (Puerto Rico); Gonzalez, M.; Parra, S.; Malave, G.; Alvarellos, J. [Petroleos de Venezuela (Venezuela); Santamarina, J.C. [Georgia Inst. of Technology, Atlanta, GA (United States)

    2002-12-01

    An important engineering application for dam foundations was presented. A study was conducted in which tomographic techniques were used to field-test a site characterization methodology based on the measurement of P and S-wave travel times and data processing. P and S-wave propagation studies provide information about stratigraphy, spatial distribution in soil stiffness and degree of saturation. In some instances, the state of stress can be determined. The interpretation can be enhanced through tomography by providing spatial distribution of the soil properties, instead of the average value that is obtained through cross-hole or down-hole testing. This field test at Lake Maracaibo Coastal Protection System involved 3 crosshole tests in the same soil deposit under different states of stress. A new borehole-less source of shear waves was used to increase the quality of the measurement. Tomographic imaging effectively characterized geotechnical systems and monitored subsurface processes such as changes in the field of stress in relation to pressure anomalies. It was concluded that a low velocity region beneath the berm of a dam can result from the undergoing subsurface arching and subsidence. 20 refs., 1 figs.

  16. [Reliability of % vol. declarations on labels of wine bottles].

    Science.gov (United States)

    Schütz, Harald; Erdmann, Freidoon; Verhoff, Marcel A; Weiler, Günter

    2005-01-01

    The Council Regulation (EC) no. 1493/1999 of 17 May 1999 on the common organisation of the market in wine (Abl. L 179 dated 14/7/1999) and the GMO Wine 2000 (Annex VII A) stipulates that the labels of wine bottles have to indicate, among others, information on the sales designation of the product, the nominal volume and the alcoholic strength. The latter must not differ by more than 0.5% vol. from the alcoholic strength as established by analysis. Only when quality wines are stored in bottles for more than three years, the accepted tolerance limits are +/- 0.8% vol. The presented investigation results show that deviations have to be taken into account which may be highly relevant for forensic practice. PMID:15887778

  17. Supersymmetric mechanics. Vol. 1. Supersymmetry, noncommutativity and matrix models

    Energy Technology Data Exchange (ETDEWEB)

    Bellucci, S. (ed.) [Istituto Nazionale di Fisica Nucleare, Rome (Italy)

    2006-07-01

    This is the first volume in a series of books on the general theme of Supersymmetric Mechanics; the series is based on lectures and discussions held in 2005 and 2006 at the INFN-Laboratori Nazionali di Frascati. The selected topics include supersymmetry and supergravity, the attractor mechanism, black holes, noncommutative mechanics, super-Hamiltonian formalism and matrix models. All lectures are intended for beginners at the graduate level and nonspecialists from related fields of research and a substantial effort was made to incorporate in the extensive write-ups the results of the animated discussion sessions which followed the individual lectures. A second volume appears as Lecture Notes Physics, Vol. 701 ''Supersymmetric Mechanics - Vol. 2: The Attractor Mechanism'' (2006), ISBN: 3-540-34156-0. (orig.)

  18. Index to Nuclear Safety. A technical progress review by chronology, permuted title, and author. Vol. 11, No. 1 through Vol. 15, No. 6

    International Nuclear Information System (INIS)

    This issue of the Index to Nuclear Safety covers only articles included in Nuclear Safety, Vol. 11, No. 1, through Vol. 15, No. 6. This index is presented in three sections as follows: Chronological List of Articles by Volume; Permuted Title (KWIC) Index; and Author Index. (U.S.)

  19. Wave Forces on Offshore Windturbine Foundations

    DEFF Research Database (Denmark)

    Larsen, Brian Juul; Frigaard, Peter

    The present report on the wave forces is the first report on the Borkum Riff project. A testprogramme has been performed to dertermine the wave forces on windturbine foundations.......The present report on the wave forces is the first report on the Borkum Riff project. A testprogramme has been performed to dertermine the wave forces on windturbine foundations....

  20. Liberating Foundations of Art and Design

    Science.gov (United States)

    Lerner, Fern

    2012-01-01

    Research concerning the basic course known as Foundations of Art and Design strengthens the pedagogical approach for K-16 art and design education. The version of Foundations introduced to America by Josef Albers, although hardly changed, is shown to have continued, timeless relevance. Next, a sequential, implicit logic is revealed in linking the…

  1. Peace Education: Exploring Some Philosophical Foundations

    Science.gov (United States)

    Page, James S.

    2004-01-01

    Peace education has been recognized as an important aspect of social education for the past three decades. The critical literature as well as official documents, however, have given little attention to its philosophical foundations. This essay explores these foundations in the ethics of (1) virtue, (2) consequentialism, (3) aesthetics, (4)…

  2. Relative information at the foundation of physics

    OpenAIRE

    Rovelli, Carlo

    2013-01-01

    Shannon's notion of relative information between two physical systems can function as foundation for statistical mechanics and quantum mechanics, without referring to subjectivism or idealism. It can also represent a key missing element in the foundation of the naturalistic picture of the world, providing the conceptual tool for dealing with its apparent limitations. I comment on the relation between these ideas and Democritus.

  3. Density functional theory: Foundations reviewed

    Energy Technology Data Exchange (ETDEWEB)

    Kryachko, Eugene S., E-mail: eugene.kryachko@ulg.ac.be [Bogolyubov Institute for Theoretical Physics, Kiev, 03680 (Ukraine); Ludeña, Eduardo V., E-mail: popluabe@yahoo.es [Centro de Química, Instituto Venezolano de Investigaciones Científicas, IVIC, Apartado 21827, Caracas 1020-A (Venezuela, Bolivarian Republic of); Prometheus Program, Senescyt (Ecuador); Grupo Ecuatoriano para el Estudio Experimental y Teórico de Nanosistemas, GETNano, USFQ, N104-E, Quito (Ecuador); Escuela Politécnica Superior del Litoral, ESPOL, Guayaquil (Ecuador)

    2014-11-10

    Guided by the above motto (quotation), we review a broad range of issues lying at the foundations of Density Functional Theory, DFT, a theory which is currently omnipresent in our everyday computational study of atoms and molecules, solids and nano-materials, and which lies at the heart of modern many-body computational technologies. The key goal is to demonstrate that there are definitely the ways to improve DFT. We start by considering DFT in the larger context provided by reduced density matrix theory (RDMT) and natural orbital functional theory (NOFT), and examine the implications that N-representability conditions on the second-order reduced density matrix (2-RDM) have not only on RDMT and NOFT but, also, by extension, on the functionals of DFT. This examination is timely in view of the fact that necessary and sufficient N-representability conditions on the 2-RDM have recently been attained. In the second place, we review some problems appearing in the original formulation of the first Hohenberg–Kohn theorem which is still a subject of some controversy. In this vein we recall Lieb’s comment on this proof and the extension to this proof given by Pino et al. (2009), and in this context examine the conditions that must be met in order that the one-to-one correspondence between ground-state densities and external potentials remains valid for finite subspaces (namely, the subspaces where all Kohn–Sham solutions are obtained in practical applications). We also consider the issue of whether the Kohn–Sham equations can be derived from basic principles or whether they are postulated. We examine this problem in relation to ab initio DFT. The possibility of postulating arbitrary Kohn–Sham-type equations, where the effective potential is by definition some arbitrary mixture of local and non-local terms, is discussed. We also deal with the issue of whether there exists a universal functional, or whether one should advocate instead the construction of problem

  4. Density functional theory: Foundations reviewed

    International Nuclear Information System (INIS)

    Guided by the above motto (quotation), we review a broad range of issues lying at the foundations of Density Functional Theory, DFT, a theory which is currently omnipresent in our everyday computational study of atoms and molecules, solids and nano-materials, and which lies at the heart of modern many-body computational technologies. The key goal is to demonstrate that there are definitely the ways to improve DFT. We start by considering DFT in the larger context provided by reduced density matrix theory (RDMT) and natural orbital functional theory (NOFT), and examine the implications that N-representability conditions on the second-order reduced density matrix (2-RDM) have not only on RDMT and NOFT but, also, by extension, on the functionals of DFT. This examination is timely in view of the fact that necessary and sufficient N-representability conditions on the 2-RDM have recently been attained. In the second place, we review some problems appearing in the original formulation of the first Hohenberg–Kohn theorem which is still a subject of some controversy. In this vein we recall Lieb’s comment on this proof and the extension to this proof given by Pino et al. (2009), and in this context examine the conditions that must be met in order that the one-to-one correspondence between ground-state densities and external potentials remains valid for finite subspaces (namely, the subspaces where all Kohn–Sham solutions are obtained in practical applications). We also consider the issue of whether the Kohn–Sham equations can be derived from basic principles or whether they are postulated. We examine this problem in relation to ab initio DFT. The possibility of postulating arbitrary Kohn–Sham-type equations, where the effective potential is by definition some arbitrary mixture of local and non-local terms, is discussed. We also deal with the issue of whether there exists a universal functional, or whether one should advocate instead the construction of problem

  5. The Foundation-Institution Partnership: The Role of Institutionally Related Foundations in Public Higher Education

    Science.gov (United States)

    Bass, David

    2010-01-01

    Institutionally related foundations have played a vital role in raising and managing private resources in support of public institutions of higher education. Unlike private grant-making foundations, college and university foundations are typically incorporated as public charities under section 501(c)(3) of the Internal Revenue Code. Although they…

  6. Forward the Foundation: Local Education Foundations Offer an Alternative Source for School Funding

    Science.gov (United States)

    Brooks-Young, Susan

    2007-01-01

    February's column "Going Corporate" discussed ideas for approaching private foundations for funding. Some districts take this idea several steps further by partnering with the community and local businesses to establish a not-for-profit foundation, or local education foundation (LEF). It probably comes as no surprise that the idea of forming a LEF…

  7. Provenance and composition of unusually chrome and nickel-rich bucket-shaped pottery from Rogaland (southwestern Norway)

    Science.gov (United States)

    Zimmermann, Udo; Kristoffersen, Elna Siv; Fredriksen, Per Ditlef; Bertolino, Silvana A. R.; Andò, Sergio; Bersani, Danilo

    2016-05-01

    We report results from FE-SEM-EDS, geochemical, mineralogical analyses and Raman spectroscopy of pottery of bucket-shaped ceramic from Rogaland (southwestern Norway) dated between the 5th and 6th Century. The study reveals a very rare pottery composition including asbestos-group minerals and an unusual enrichment in compatible elements like Cr (8-27 × Post Archean average shale (PAS), McLennan et al., 2006), Ni (2-8 × normal shale) and Co (2-3 × PAS). X-Rray diffraction and Raman spectroscopy could pinpoint that Ni is introduced by specific Ni-rich talc mineral and chlorite minerals and Cr occurs in a rare Cr-rich talc, and possibly in a Cr-chlorite, these minerals are the most abundant in the pottery, which is supported by strong enrichment in Mg (10-20 × PAS). The addition of Mg, Cr, Ni and Co and other compatible trace elements is to our current knowledge not caused by anthropogenic activity but related to the used materials, which are alteration products of mafic and ultramafic rocks or genetically related to mafic and ultramafic rocks. Rocks of this type are exposed in vicinity of the sampling areas in a region called Karmøy, hosting a world famous ophiolite complex, which is identified as the major source for the mafic and ultramafic component, as the next succession of a similar composition is far further north located in Norway and a number of rock types on Karmøy matches the chemical composition of the pottery. The here reported composition is spectacular and extremely rare - if ever found - in pottery. Our study shows that unusual material sources have been used in pottery production, and this opens for discussion whether the materials were deliberately selected by the manufacturers, thereby expressing a specific social function, in a time period where more functional clay types and additives, and certainly functional and sufficient for use in pottery, where abundant in areas of Rogaland closer to where the pots were found.

  8. Proceedings of the Seventh Conference of Nuclear Sciences and Applications. Vol.1,2,3

    International Nuclear Information System (INIS)

    The publication has been set up as a textbook for nuclear sciences and applications vol.1: (1) radiochemistry; (2) radiation chemistry; (3) isotope production; (4) waste management; vol.2: (1) nuclear and reactor; (2) physics; (3) plasma physics; (4) instrumentation and devices; (5) trace and ultra trace analysis; (6) environmental; vol.3: (1) radiation protection; (2) radiation health hazards; (3) nuclear safety; (4) biology; (5) agriculture

  9. Foundations for a theory of gravitation theories

    Science.gov (United States)

    Thorne, K. S.; Lee, D. L.; Lightman, A. P.

    1972-01-01

    A foundation is laid for future analyses of gravitation theories. This foundation is applicable to any theory formulated in terms of geometric objects defined on a 4-dimensional spacetime manifold. The foundation consists of (1) a glossary of fundamental concepts; (2) a theorem that delineates the overlap between Lagrangian-based theories and metric theories; (3) a conjecture (due to Schiff) that the Weak Equivalence Principle implies the Einstein Equivalence Principle; and (4) a plausibility argument supporting this conjecture for the special case of relativistic, Lagrangian-based theories.

  10. Philosophical foundations of interpretations of quantum mechanics

    CERN Document Server

    Bezlepkin, Evgeny

    2016-01-01

    It is demonstrated that the reason for the diversity of interpretations of quantum mechanics is that they are not connected by continuity relations with classical physics, and also the reason is the impossibility of operationalist definition of the vector of state. The problem lies in the incompatibility of the philosophical foundations of interpretations, which results in the difficulty of building a unified picture of the world. To solve the problem, we identify general philosophical foundation of interpretations of quantum mechanics and built their classification. We also show that in more general theories, the part of which is quantum mechanics, it is possible to integrate (reconcile) the philosophical foundations of interpretations.

  11. Relativistic Navigation: A Theoretical Foundation

    Science.gov (United States)

    Turyshev, Slava G.

    1996-01-01

    We present a theoretical foundation for relativistic astronomical measurements in curved space-time. In particular, we discuss a new iterative approach for describing the dynamics of an isolated astronomical N-body system in metric theories of gravity. To do this, we generalize the Fock-Chandrasekhar method of the weak-field and slow-motion approximation (WFSMA) and develop a theory of relativistic reference frames (RF's) for a gravitationally bounded many-extended-body problem. In any proper RF constructed in the immediate vicinity of an arbitrary body, the N-body solutions of the gravitational field equations are formally presented as a sum of the Riemann-flat inertial space-time, the gravitational field generated by the body itself, the unperturbed solutions for each body in the system transformed to the coordinates of this proper RF, and the gravitational interaction term. We develop the basic concept of a general WFSMA theory of the celestial RF's applicable to a wide class of metric theories of gravity and an arbitrary model of matter distribution. We apply the proposed method to general relativity. Celestial bodies are described using a perfect fluid model; as such, they possess any number of internal mass and current multipole moments that explicitly characterize their internal structures. The obtained relativistic corrections to the geodetic equations of motion arise because of a coupling of the bodies' multiple moments to the surrounding gravitational field. The resulting relativistic transformations between the different RF's extend the Poincare group to the motion of deformable self-gravitating bodies. Within the present accuracy of astronomical measurements we discuss the properties of the Fermi-normal-like proper RF that is defined in the immediate vicinity of the extended compact bodies. We further generalize the proposed approximation method and include two Eddington parameters (gamma, Beta). This generalized approach was used to derive the

  12. Proceedings of the second international conference on environmental impact assessment of all economical activities. Vol. 3

    International Nuclear Information System (INIS)

    Proceedings of the conference consist of 3 volumes: Vol. 1 - 'Environmental Impact Assessment of all Economical Activities including Industry'; Vol. 2 - 'Air Pollution Control and Prevention'; Vol. 3 - Waste Management and Environmental Problems in Construction Industry'. Out of 39 papers contained in Vol. 3, 3 were inputted to INIS. They deal with the use of portable radioisotope X-ray fluorescence analyzers in the determination of building material contamination by toxic elements, with underground waste repositories and ground water contamination, and the impact of the Temelin nuclear power plant on the hydrosphere and other environmental components. (Z.S.)

  13. Long-Term Ownership by Industrial Foundations

    DEFF Research Database (Denmark)

    Børsting, Christa Winther; Kuhn, Johan Moritz; Poulsen, Thomas;

    2016-01-01

    Short-termism has become a serious concern for businesses and policy makers and this has inspired a search for governance arrangement to promote long term decision making. In this paper we study a particularly long-term ownership structure, which is fairly common in Northern Europe, particularly in...... Denmark. Industrial foundations are independent legal entities without owners or members typically with the dual objective of preserving the company and using excess profits for charity. We use a unique Danish data set to examine the governance of foundation-owned companies. We show that they are long......-term in several respects. Foundations hold on to their shares for longer. Foundation-owned companies replace managers less frequently. They have more conservative capital structures with less leverage. Their companies survive longer. Their business decisions appear to be more long term. This paper...

  14. Astrophysics. An introduction into theory and foundations

    International Nuclear Information System (INIS)

    The following topics are covered: general and physical foundations, star burning, Jeans instability, protostars, radiation transport, stellar energy sources, models for burning stars and compact objects, white dwarfs, neutron stars, pulsars and black holes, stability theory, collapsing objects

  15. Industrial Foundations in the Tax System

    DEFF Research Database (Denmark)

    Nielsen, Søren Bo

    countries and elsewhere. This system implies clear consequences for the taxation of different types of income, labor income and capital income. However, as the outline of the system is based on the premise that “people pay taxes”, industrial foundations, having no personal owners, do not immediately fit in......This paper attempts to place industrial foundations (IFs in the following; similar to trusts) in the tax system. An industrial foundation is a private foundation that holds a voting majority in a joint stock corporation. These IFs are probably more prevalent in Denmark than in any other country......, and the paper starts by reviewing some stylized facts and figures for IFs in Denmark. Thereafter, it recalls basic desires as to the structure and logic in the tax system and demonstrates how they lead to a system akin to the ‘dual income tax’ system which has inspired tax reforms in the Nordic...

  16. Sartre: A Possible Foundation for Educational Theory.

    Science.gov (United States)

    Burstow, Bonnie

    1983-01-01

    The claim by Khemais Benhamida and others that Jean-Paul Sartre's philosophy is too hostile and restrictive to serve as the foundation of progressive educational theory is based on an incomplete understanding of the philosopher's work. (IS)

  17. Composite turbine bucket assembly

    Science.gov (United States)

    Liotta, Gary Charles; Garcia-Crespo, Andres

    2014-05-20

    A composite turbine blade assembly includes a ceramic blade including an airfoil portion, a shank portion and an attachment portion; and a transition assembly adapted to attach the ceramic blade to a turbine disk or rotor, the transition assembly including first and second transition components clamped together, trapping said ceramic airfoil therebetween. Interior surfaces of the first and second transition portions are formed to mate with the shank portion and the attachment portion of the ceramic blade, and exterior surfaces of said first and second transition components are formed to include an attachment feature enabling the transition assembly to be attached to the turbine rotor or disk.

  18. Corporatism As A Totalitaristic Foundation And Practicism

    OpenAIRE

    Slobodan Lakic

    2012-01-01

    Based on the liberal concept of management and generating profit, capitalism disappeared from the world economic and political scene during the Great Economic Crisis. The expansion of mega corporations, primarily from the USA, was enabled by Anglo-Saxon fascist political-economic world order and state favoring - global control mechanism. The fascist order was in propulsion owing to a combination of leftist economic and political foundations and rightist oppressive practicism. As a foundation ...

  19. Foundations of microprogramming architecture, software and applications

    CERN Document Server

    Agrawala, Ashok K

    1976-01-01

    Foundations of Microprogramming: Architecture, Software, and Applications discusses the foundations and trends in microprogramming, focusing on the architectural, software, and application aspects of microprogramming. The book reviews microprocessors, microprogramming concepts, and characteristics, as well as the architectural features in microprogrammed computers. The text explains support software and the different hierarchies or levels of languages. These include assembler languages which are mnemonic or symbolic representation of machine commands; the procedure oriented machine-dependent;

  20. CENTRIFUGAL VIBRATION TEST OF RC PILE FOUNDATION

    Science.gov (United States)

    Higuchi, Shunichi; Tsutsumiuchi, Takahiro; Otsuka, Rinna; Ito, Koji; Ejiri, Joji

    It is necessary that nonlinear responses of structures are clarified by soil-structure interaction analysis for the purpose of evaluating the seismic performances of underground structure or foundation structure. In this research, centrifuge shake table tests of reinforced concrete pile foundation installed in the liquefied ground were conducted. Then, finite element analyses for the tests were conducted to confirm an applicability of the analytical method by comparing the experimental results and analytical results.

  1. Nordic Corporate Governance and Industrial Foundations

    DEFF Research Database (Denmark)

    Thomsen, Steen

    The Nordic countries have attracted considerable attention in recent years as a benchmark for good governance. However, while the political governance characteristics of the Nordic model – particularly the welfare state - are well understood, its corporate governance characteristics remain elusive...... to the international audience. This paper therefore reviews the Nordic corporate governance model with special emphasis on a unique ownership structure, industrial foundations (foundations that own business companies). Rather than a meticulous description of details it emphasizes the Nordic model as...

  2. Búsquedas en grandes volúmenes de datos

    OpenAIRE

    Britos, Luis; Di Gennaro, María E.; Gil Costa, Graciela Verónica; Kasián, Fernando; Lobos, Jair; Ludueña, Verónica; Molina, Romina; Printista, Alicia Marcela; Reyes, Nora Susana; Roggero, Patricia; Trabes, Guillermo

    2016-01-01

    En la actualidad los sistemas de información demandan no sólo poder realizar búsquedas eficientes sobre distintos tipos de datos, tales como texto libre, audio, video, secuencias de ADN, etc., sino también poder manejar grandes volúmenes de estos datos. Dada una consulta, el objetivo de un sistema de recuperación de información es obtener lo que podría ser útil o relevante para el usuario, usando una estructura de almacenamiento especialmente diseñada para responderla eficientemente. Nuest...

  3. The foundation of self-esteem.

    Science.gov (United States)

    Bailey, Joseph A

    2003-05-01

    Self-esteem is a simplistic term for varied and complex mental states pertaining to how one views oneself. It takes but little research in the voluminous literature to see the vagueness and inconsistencies in its various definitions. Even more problematic is the uncertainty concerning its foundational components. The importance of having a solid definition and specific ideas about the foundational components of self-esteem is that both pave the way to recognizing its causes; to predicting effects from those causes; and to organizing the trouble-shooting process for locating those philosophical flaws or psychological scars which lead to low self-esteem. The purpose of this paper is to offer a common ground for thinking about self-esteem at its most basic level. In order to distinguish the "basic level" from the rest of the components of self-esteem, let us liken it to a skyscraper building. Here, the focus is on the building's "underground foundation" and the base upon which that foundation rests. The base is a definition that allows for the assessment of the foundation. The underground foundation itself consists of the mental building blocks called self-meaning, self-identity, self-image, and self-concepts. To help illustrate their interactions, a few of the "masks" and "faces" of self-esteem will be mentioned. What is not being addressed is the "above ground structure"--those theories and manifestations dealt with by most mental health specialists. PMID:12793795

  4. Health legacy foundations: a new census.

    Science.gov (United States)

    Niggel, Sabrina Jones; Brandon, William P

    2014-01-01

    Health care merger and acquisition activity has increased since enactment of the Affordable Care Act in 2010. Proceeds from transactions involving nonprofit hospitals, health systems, and health plans will endow philanthropic foundations, collectively known as health legacy foundations. Building on work by Grantmakers In Health, we undertook a systematic search for these foundations and generated a newly updated, comprehensive database. We found 306 organizations in forty-three states that have been endowed with proceeds from the sale, merger, lease, joint venture, or other restructuring of nonprofit health care assets. These health legacy foundations had $26.2 billion in assets in 2010. Concentrated in the southern United States, foundations originating from hospitals and specialty care facilities (86.6 percent) held mean assets of $64.7 million per funder and typically restricted grants to local communities. Foundations formed from health plans (13.4 percent) held higher mean assets ($222 million), usually served larger areas, and were more likely to engage in health care advocacy. Recent transactions involving smaller and stand-alone nonprofit hospitals will infuse many more communities with unprecedented charitable wealth. PMID:24395949

  5. 75 FR 45600 - African Development Foundation, Board of Directors Meeting

    Science.gov (United States)

    2010-08-03

    ...; ] AFRICAN DEVELOPMENT FOUNDATION African Development Foundation, Board of Directors Meeting Time: Tuesday, August 17, 2010, 8:30 a.m. to 1 p.m. Place: African Development Foundation, Conference Room, 1400...

  6. 75 FR 2844 - African Development Foundation, Board of Directors Meeting

    Science.gov (United States)

    2010-01-19

    ...; ] AFRICAN DEVELOPMENT FOUNDATION African Development Foundation, Board of Directors Meeting Time: Tuesday, January 26, 2010, 8:30 a.m. to 1 p.m. Place: African Development Foundation, Conference Room, 1400...

  7. 75 FR 14418 - African Development Foundation, Board of Directors Meeting

    Science.gov (United States)

    2010-03-25

    ...; ] AFRICAN DEVELOPMENT FOUNDATION African Development Foundation, Board of Directors Meeting Time: Tuesday, April 13, 2010, 9:30 a.m. to 1 p.m. Place: African Development Foundation, Conference Room, 1400...

  8. ECONOMICS OF ALEXANDER THE GREAT (15 vols + 4 cdroms) by Gregory Zorzos

    OpenAIRE

    Gregory Zorzos

    2002-01-01

    Research contains many ancient texts (Ancient Greek, Hebrews, Hieroglyphs, Assyrian, Sumerian, Babylonian, Latin, etc.). 1. (MICRO-MACRO ECONOMICS OF ALEXANDER THE GREAT (5 vols + cdrom). Microeconomics and macroeconomics of Alexander the Great. Economic theories, feasibilities, economic plannings, general description of the campaign's business plan etc. 2. BANKS OF ALEXANDER THE GREAT (2 vols + cdrom) Describes banking system, economists, financiers, investors, accountants, bookkeepers, etc,...

  9. Index to Nuclear Safety. A technical progress review by chronology, permuted title, and author. Vol. 11, No. 1--Vol. 17, No. 6

    International Nuclear Information System (INIS)

    This index to Nuclear Safety covers articles in Nuclear Safety Vol. 11, No. 1 (Jan.-Feb. 1970), through Vol. 17, No. 6 (Nov.-Dec. 1976). The index includes a chronological list of articles (including abstract) followed by KWIC and Author Indexes. Nuclear Safety, a bimonthly technical progress review prepared by the Nuclear Safety Information Center, covers all safety aspects of nuclear power reactors and associated facilities. The index lists over 350 technical articles in the last six years of publication

  10. Index to Nuclear Safety. A technical progress review by chronology, permuted title, and author. Vol. 11, No. 1--Vol. 17, No. 6

    Energy Technology Data Exchange (ETDEWEB)

    Cottrell, W.B.; Klein, A.

    1977-02-23

    This index to Nuclear Safety covers articles in Nuclear Safety Vol. 11, No. 1 (Jan.-Feb. 1970), through Vol. 17, No. 6 (Nov.-Dec. 1976). The index includes a chronological list of articles (including abstract) followed by KWIC and Author Indexes. Nuclear Safety, a bimonthly technical progress review prepared by the Nuclear Safety Information Center, covers all safety aspects of nuclear power reactors and associated facilities. The index lists over 350 technical articles in the last six years of publication.

  11. Orthopaedic research and education foundation and industry.

    Science.gov (United States)

    Wurth, Gene R; Sherr, Judy H; Coffman, Thomas M

    2003-07-01

    Members of orthopaedic industry commit a significant amount of funds each year to support research and education programs that are directly related to their product(s). In addition, industry supports organizations such as the Orthopaedic Research and Education Foundation. The relationship between the Orthopaedic Research and Education Foundation and industry began in the early 1980s. The support to the Orthopaedic Research and Education Foundation from industry primarily has come in the form of unrestricted grants. These grants best can be looked at as an investment rather than a contribution. This form of giving, once called corporate philanthropy is more accurately referred to as strategic philanthropy. Members of industry make these investments to enhance their reputations, build brand awareness, market their products and services, improve employee morale, increase customer loyalty, and establish strategic alliances. The specialty of orthopaedics is among the leaders in medicine in the amount of funding raised within the specialty for research and education programs. This is because of the amount of support from members of industry and the surgeons. During the past 15 years, 40% of the annual support to the Orthopaedic Research and Education Foundation has come from industry and the balance has come from surgeons and members of lay public. Future industry support of the Orthopaedic Research and Education Foundation and other organizations within the specialty of orthopaedics will be dependent on the continued demonstration of tangible returns in areas described. PMID:12838052

  12. Impact loads on beams on elastic foundations

    International Nuclear Information System (INIS)

    Quite often, complex structural components are idealised as beams in engineering analysis and design. Also, equations governing the responses of shallow shells are mathematically equivalent to the equations governing the responses of beams on elastic foundations. Hence with possible applications in several technical disciplines, the behaviour of beams on elastic foundations subjected to impact loads is studied in detail in the present investigation both analytically and experimentally. The analytical methods include analysis and energy method. The effect of foundation parameters (stiffness, and damping constants) on the dynamic responses of the beam-foundation system has been analysed. In modal analysis, the free-vibration equation has been solved by replacing the applied impulse by suitable initial conditions and the solution has been obtained as the linear combination of an infinite sequence of discrete eigen-vectors. In the energy method, the beam-foundation system is treated to be under forced vibrations and the forcing function has been obtained using the Hertz's law of impact. In the case of free-free end conditions of the beam, the rigid body modes and the elastic modes have been superposed to obtain the total response. The responses predicted using modal analysis are higher than those obtained using energy method. From the present study it is observed that model analysis is preferable to energy method. (Auth.)

  13. Al- Khwarizmi and axiomatic foundation of algebra

    International Nuclear Information System (INIS)

    This paper intends to investigate the axiomatic foundations of algebra, as they were presented in the book of algebra of al-Khwarizmi (9 th century), and as they were developed in many subsequent Arabic works. The paper gives also a description of algebra evolution towards a discipline independent ofgeometry and arithmetic: the two disciplines whosemarriage had led to its birth.By an in depth reading of some details in the text of al Khwarizmi , we concluded that this mathematician intended to lay down the axiomatic foundations of that new discipline. His resort to arithmetical and geometrical means was a way of making his theory more accessible. He used them to justify the axioms: those that were not explicitly introduced per se, and those that were remained implicit. The paper also relies on some unedited writingsof al-Khwarizmi's successors, which could shedlight on the ways they used to consolidate the foundations of algebra and improve its methods. (author)

  14. Expert Meeting Report. Foundations Research Results

    Energy Technology Data Exchange (ETDEWEB)

    Ojczyk, C. [Univ. of Minnesota, St. Paul, MN (United States); Huelman, P. [Univ. of Minnesota, St. Paul, MN (United States); Carmody, J. [Univ. of Minnesota, St. Paul, MN (United States)

    2013-05-01

    The NorthernSTAR Building America Partnership held an expert meeting on Foundations–Research Results on November 15, 2011, in Minneapolis, MN. Audience participation was actively encouraged during each presentation to uncover needs and promote dialog among researchers and industry professionals. Key results were: greater understanding of the role of moisture transport through foundation and insulation materials and its potential impact on building durability; greater understanding of the role of foundation type in the process of selecting an insulation system for energy performance and building durability; need for research to quantify the risks associated with insulation processes to better enable users to weigh costs and benefits against the existing conditions of a home; need for improved performance modeling capabilities that address variations in foundation types and soil conditions.

  15. Foundations for the Future: The Fundraising Role of Foundation Boards at Public Colleges and Universities

    Science.gov (United States)

    Worth, Michael

    2012-01-01

    In the face of rising costs and a prolonged economic downturn, public colleges and universities are being challenged to increase their sources of private support and philanthropy. Drawing on the findings of a recent AGB survey of public college- and university-affiliated foundation board chairs and chief executive officers, Foundations for the…

  16. Effective Foundation Boards: A Guide for Members of Institutionally Related Foundation Boards

    Science.gov (United States)

    Association of Governing Boards of Universities and Colleges, 2012

    2012-01-01

    Institutionally related foundations are an important partner to all institutions of public higher education. As public colleges, universities, and systems respond to a shifting landscape, related foundations have become increasingly important to their financial sustainability, commitment to academic access and educational excellence, and…

  17. Relativity foundations & philosophy of science & technology

    CERN Document Server

    Angel, Roger B

    1980-01-01

    Relativity: The Theory and its Philosophy provides a completely self-contained treatment of the philosophical foundations of the theory of relativity. It also surveys the most essential mathematical techniques and concepts that are indispensable to an understanding of the foundations of both the special and general theories of relativity. In short, the book includes a crash course in applied mathematics, ranging from elementary trigonometry to the classical tensor calculus.Comprised of 11 chapters, this book begins with an introduction to fundamental mathematical concepts such as sets, relatio

  18. Wave-current force on bridge foundation

    OpenAIRE

    Pan, J.N.; Wang, D.T.; Wang, X. G.; Nie, F

    2013-01-01

    Many cross-sea bridges have been constructed or in construction in the Chinese coastal areas, such as Hangzhou Bay Bridge, East China Sea Bridge and Hong Kong-Zhuhai-Macau Bridge, etc. Usually the foundations of cross-sea bridges will bear the load of wave and current simultaneously, the extreme value of which is an important factor for bridge design. It is quite difficult to estimate the extreme wave-current forces on bridge foundations due to their complex form, for example a polygonal plat...

  19. Historical and Conceptual Foundation of Diagrammatical Ontology

    DEFF Research Database (Denmark)

    Øhrstrøm, Peter; Uckelman, Sara L.; Schärfe, Henrik

    2007-01-01

    During the Renaissance there was a growing interest for the use of diagrams within conceptual studies. This paper investigates the historical and philosophical foundation of this renewed use of diagrams in ontology as well as the modern relevance of this foundation. We discuss the historical...... and philosophical background for Jacob Lorhard’s invention of the word ‘ontology’ as well as the scientific status of ontology in the 16th and 17th century. We also consider the use of Ramean style diagrams and diagrammatic ontology in general. A modern implementation of Lorhard’s ontology is discussed...... and this classical ontology is compared to some modern ontologies....

  20. Cyber warfare building the scientific foundation

    CERN Document Server

    Jajodia, Sushil; Subrahmanian, VS; Swarup, Vipin; Wang, Cliff

    2015-01-01

    This book features a wide spectrum of the latest computer science research relating to cyber warfare, including military and policy dimensions. It is the first book to explore the scientific foundation of cyber warfare and features research from the areas of artificial intelligence, game theory, programming languages, graph theory and more. The high-level approach and emphasis on scientific rigor provides insights on ways to improve cyber warfare defense worldwide. Cyber Warfare: Building the Scientific Foundation targets researchers and practitioners working in cyber security, especially gove

  1. History on foundation of Korea nuclear power

    International Nuclear Information System (INIS)

    This reports the history on foundation of Korea nuclear power from 1955 to 1980, which is divided ten chapters. The contents of this book are domestic and foreign affairs before foundation of nuclear power center, establishment of nuclear power and research center, early activity and internal conflict about nuclear power center, study for nuclear power business and commercialization of the studying ordeal over nuclear power administration and new phase, dispute for jurisdiction on nuclear power business and the process, permission for nuclear reactor, regulation and local administration, the process of deliberation and decision of reactor 3. 4 in Yonggwang, introduction of nuclear reprocessing facilities and activities for social organization.

  2. Impact of foundation properties on seismic response

    International Nuclear Information System (INIS)

    Seismic response of the NPP structures depends on the foundation properties twice. First, “free-field excitation” depends on soil/rock layering; second, soil-structure interaction also depends on soil/rock profile. Extreme cases of soil foundation profile are homogeneous half-space and soil layer resting on rigid rock. These two site profiles are principally different in behavior. Each particular site is usually somewhere in between. It is important to know the type of site in order to predict seismic response of NPP structures. (author)

  3. Mastering Microsoft SharePoint Foundation 2010

    CERN Document Server

    Callahan, C A

    2011-01-01

    Everything IT professionals need to create collaborative solutions. SharePoint Foundation 2010 is the newest version of a powerful collaboration tool used in many Exchange-enabled organizations. This book gets network professionals and business application administrators up to speed on the updates, features, and installation procedures, preparing them to create powerful collaboration structures for their companies.: Microsoft SharePoint Foundation 2010 is the successor to Windows SharePoint Services 3.0 and is used with Microsoft Office SharePoint Server to enable collaboration; this guide pre

  4. Neutron Reference Benchmark Field Specification: ACRR 44 Inch Lead-Boron (LB44) Bucket Environment (ACRR-LB44-CC-32-CL).

    Energy Technology Data Exchange (ETDEWEB)

    Vega, Richard Manuel [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Parma, Edward J. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Griffin, Patrick J. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Vehar, David W. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

    2015-07-01

    This report was put together to support the International Atomic Energy Agency (IAEA) REAL- 2016 activity to validate the dosimetry community’s ability to use a consistent set of activation data and to derive consistent spectral characterizations. The report captures details of integral measurements taken in the Annular Core Research Reactor (ACRR) central cavity with the 44 inch Lead-Boron (LB44) bucket, reference neutron benchmark field. The field is described and an “a priori” calculated neutron spectrum is reported, based on MCNP6 calculations, and a subject matter expert (SME) based covariance matrix is given for this “a priori” spectrum. The results of 31 integral dosimetry measurements in the neutron field are reported.

  5. Vibration Based Wind Turbine Tower Foundation Design Utilizing Soil-Foundation-Structure Interaction

    Science.gov (United States)

    Al Satari, P. E. Mohamed; Hussain, S. E. Saif

    2008-07-01

    Wind turbines have been used to generate electricity as an alternative energy source to conventional fossil fuels. This case study is for multiple wind towers located at different villages in Alaska where severe arctic weather conditions exist. The towers are supported by two different types of foundations; large mat or deep piles foundations. Initially, a Reinforced Concrete (RC) mat foundation was utilized to provide the system with vertical and lateral support. Where soil conditions required it, a pile foundation solution was devised utilizing a 30″ thick RC mat containing an embedded steel grillage of W18 beams supported by 20″-24″ grouted or un-grouted piles. The mixing and casting of concrete in-situ has become the major source of cost and difficulty of construction at these remote Alaska sites. An all-steel foundation was proposed for faster installation and lower cost, but was found to impact the natural frequencies of the structural system by significantly softening the foundation system. The tower-foundation support structure thus became near-resonant with the operational frequencies of the wind turbine leading to a likelihood of structural instability or even collapse. A detailed 3D Finite-Element model of the original tower-foundation-pile system with RC foundation was created using SAP2000. Soil springs were included in the model based on soil properties obtained from the geotechnical consultant. The natural frequency from the model was verified against the tower manufacturer analytical and the experimental values. Where piles were used, numerous iterations were carried out to eliminate the need for the RC and optimize the design. An optimized design was achieved with enough separation between the natural and operational frequencies to prevent damage to the structural system eliminating the need for any RC encasement to the steel foundation or grouting to the piles.

  6. 49 CFR 230.77 - Foundation brake gear.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Foundation brake gear. 230.77 Section 230.77... Tenders Brake and Signal Equipment § 230.77 Foundation brake gear. (a) Maintenance. Foundation brake gear...) Distance above the rails. No part of the foundation brake gear of the steam locomotive or tender shall...

  7. Exercises in diagnostic radiology. Vol. 1. 3. ed.

    International Nuclear Information System (INIS)

    The book contains a vast number of exercises to deepen the reader's knowledge in radiology. It should be used towards the end of medical training, e.g. by interns or students just arriving at intern stage, for self-testing and as a supplement to lectures and textbooks. Some knowledge of radiology of the chest is required for the exercises in Vol. 1. The descriptions of cases have been compiled on this basis. Alternatingly easy and difficult exercises are presented, so that the reader may regard errors as an incentive and success as an encouragement. The cases are as varied as an intern may encounter them every night on a night ward. (orig./HP)

  8. volBrain: An Online MRI Brain Volumetry System.

    Science.gov (United States)

    Manjón, José V; Coupé, Pierrick

    2016-01-01

    The amount of medical image data produced in clinical and research settings is rapidly growing resulting in vast amount of data to analyze. Automatic and reliable quantitative analysis tools, including segmentation, allow to analyze brain development and to understand specific patterns of many neurological diseases. This field has recently experienced many advances with successful techniques based on non-linear warping and label fusion. In this work we present a novel and fully automatic pipeline for volumetric brain analysis based on multi-atlas label fusion technology that is able to provide accurate volumetric information at different levels of detail in a short time. This method is available through the volBrain online web interface (http://volbrain.upv.es), which is publically and freely accessible to the scientific community. Our new framework has been compared with current state-of-the-art methods showing very competitive results. PMID:27512372

  9. Componentes volátiles de mamey (mammea americana L.

    Directory of Open Access Journals (Sweden)

    Alicia Lucía Morales

    2010-07-01

    Full Text Available Los componentes volátiles del aroma de mamey (Mammea americana L, fueron extraídos utilizando el método de destilación por arrastre con vapor-extracción simultánea con solvente orgánico. El extracto fue prefraccionado por cromatografía en columna en silica gel con gradiente discontinuo Pentano: Éter etílico para obtener tres fracciones que fueron analizadas por CGAR y CGAR-EM. Se detectaron 34 compuestos, de los cuales fueron identificados 22, siendo los componentes mayoritarios: Furfural (7281 ^ig/kg y E-Famesol (2145 ng/kg

  10. volBrain: An Online MRI Brain Volumetry System

    Science.gov (United States)

    Manjón, José V.; Coupé, Pierrick

    2016-01-01

    The amount of medical image data produced in clinical and research settings is rapidly growing resulting in vast amount of data to analyze. Automatic and reliable quantitative analysis tools, including segmentation, allow to analyze brain development and to understand specific patterns of many neurological diseases. This field has recently experienced many advances with successful techniques based on non-linear warping and label fusion. In this work we present a novel and fully automatic pipeline for volumetric brain analysis based on multi-atlas label fusion technology that is able to provide accurate volumetric information at different levels of detail in a short time. This method is available through the volBrain online web interface (http://volbrain.upv.es), which is publically and freely accessible to the scientific community. Our new framework has been compared with current state-of-the-art methods showing very competitive results.

  11. Theoretical Foundations for Website Design Courses.

    Science.gov (United States)

    Walker, Kristin

    2002-01-01

    Considers how theoretical foundations in website design courses can facilitate students learning the genres of Internet communication. Proposes ways that theories can be integrated into website design courses. Focuses on two students' website portfolios and ways they utilize genre theory and activity theory discussed in class to produce websites…

  12. Scientific foundations of structural policy analysis

    OpenAIRE

    Svetlana Grygoriyeva

    2015-01-01

    This article analyses the theoretical foundations of scientific investigation of the interrelation of sectoral (technological) and institutional aspects of structural policy in Ukraine. In the article it is substantiated the concept modernization of metallurgy and mechanical engineering sectors. This concept considers the modernization of metallurgy and mechanical engineering as a single institutional and technological complex.

  13. Observed variations of monopile foundation stiffness

    DEFF Research Database (Denmark)

    Kallehave, Dan; Thilsted, C.L.; Diaz, Alberto Troya

    2015-01-01

    The soil-structure stiffness of monopile foundations for offshore wind turbines has a high impact on the fatigue loading during normal operating conditions. Thus, a robust design must consider the evolution of pile-soil stiffness over the lifetime of the wind farm. This paper present and discuss ...

  14. Foundations of computer science : lecture notes

    OpenAIRE

    Escardó, Martín

    2005-01-01

    Lecture given at Foundations of Computer Science, 2nd term In this part of the module are studied data structures and algorithms. The firts module have been treated some data structures (e.g. arrays, lists, stacks, queues) and some algorithms (e.g. linear search and binary search).

  15. Excavationless Exterior Foundation Insulation Field Study

    Energy Technology Data Exchange (ETDEWEB)

    Schirber, T. [NorthernSTAR, Minneaplolis, MN (United States); Mosiman, G. [NorthernSTAR, Minneaplolis, MN (United States); Ojczyk, C. [NorthernSTAR, Minneaplolis, MN (United States)

    2014-09-01

    Building science research supports installing exterior (soil side) foundation insulation as the optimal method to enhance the hygrothermal performance of new homes. With exterior foundation insulation, water management strategies are maximized while insulating the basement space and ensuring a more even temperature at the foundation wall. However, such an approach can be very costly and disruptive when applied to an existing home, requiring deep excavation around the entire house. The NorthernSTAR Building America Partnership team implemented an innovative, minimally invasive foundation insulation upgrade technique on an existing home. The approach consisted of using hydrovac excavation technology combined with liquid insulating foam. The team was able to excavate a continuous 4 inches wide by 4 feet to 5 feet deep trench around the entire house, 128 linear feet, except for one small part under the stoop that was obstructed with concrete debris. The combination pressure washer and vacuum extraction technology also enabled the elimination of large trenches and soil stockpiles normally produced by backhoe excavation. The resulting trench was filled with liquid insulating foam, which also served as a water-control layer of the assembly. The insulation was brought above grade using a liquid foam/rigid foam hybrid system and terminated at the top of the rim joist. Cost savings over the traditional excavation process ranged from 23% to 50%. The excavationless process could result in even greater savings since replacement of building structures, exterior features, utility meters, and landscaping would be minimal or non-existent in an excavationless process.

  16. Theoretical Foundations of Rorschach by Piotrowski.

    Science.gov (United States)

    Daly, William C.

    2005-01-01

    The writer has tried to lift the veil of mystery from the Rorschach Cards by uncovering in simple form the ten basic principles of Zygmunt Protrowski which can be considered the foundation stones of Rorschach; they are composed of psycho-justifications as well as meaningful administrative procedures allowing the reader broader understanding of…

  17. Corner Office Interview: Gates Foundation's Deborah Jacobs

    Science.gov (United States)

    Miller, Rebecca

    2010-01-01

    U.S. libraries gave the world a top talent when Deborah Jacobs left her transformational role as City Librarian of Seattle in 2008 to head the Bill & Melinda Gates Foundation's Global Libraries program, the international sibling to the U.S. Libraries program. The initiative fosters national-scale projects with grantees in transitioning countries…

  18. Response of Rubble Foundation to Dynamic Loading

    DEFF Research Database (Denmark)

    Burcharth, H. F.; Ibsen, Lars Bo

    1993-01-01

    The soil beneath vertical monolithic structures is subjected to a combination of static load due to the submerged weight of the structure and stochastic non-stationary loads as a result of the wave loads on the vertical wall. The stress conditions in the soil below a foundation exposed to both st...

  19. Perfect Bayesian equilibrium. Part II: epistemic foundations

    OpenAIRE

    Bonanno, Giacomo

    2011-01-01

    In a companion paper we introduced a general notion of perfect Bayesian equilibrium which can be applied to arbitrary extensive-form games. The essential ingredient of the proposed definition is the qualitative notion of AGM-consistency. In this paper we provide an epistemic foundation for AGM-consistency based on the AGM theory of belief revision.

  20. About The Rural Developm ent Foundation

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>The Rural Development Foundation ( RDF) ,founded in 1996,is an Indian nonprofit organization with the mission of providing quality education for underprivileged rural children. RDF founded and continues to operate five schools and one juniorcollege in Andhra Pradesh State,taking a unique holistic approach to education through innovative programs and

  1. The Philosophical Foundations of Modern Medicine

    CERN Document Server

    Lee, Dr Keekok

    2011-01-01

    An exploration of the philosophical foundation of modern medicine which explains why such a medicine possesses the characteristics it does and where precisely its strengths as well as its weaknesses lie. Written in plain English, it should be accessible to anyone who is intellectually curious, lay persons and medical professionals alike.

  2. Towards Axiomatic Foundations for Defuzzification Theory

    OpenAIRE

    Thiele, Helmut

    1998-01-01

    The starting point of the paper presented are the well-known defuzzification procedures on the one hand and approaches to axiomatize the concept of defuzzification, on the other hand. We present a new attempt to build up an axiomatic foundation for defuzzification theory using the theory of groups and the theory of partially ordered sets, and in particular, the theory of GALOIS connections.

  3. Physico-mathematical foundations of relativistic cosmology

    CERN Document Server

    Soares, Domingos

    2013-01-01

    I briefly present the foundations of relativistic cosmology, which are, General Relativity Theory and the Cosmological Principle. I discuss some relativistic models, namely, "Einstein static universe" and "Friedmann universes". The classical bibliographic references for the relevant tensorial demonstrations are indicated whenever necessary, although the calculations themselves are not shown.

  4. Response of Rubble Foundation to Dynamic Loading

    DEFF Research Database (Denmark)

    Burcharth, H. F.; Ibsen, Lars Bo

    1994-01-01

    The soil beneath vertical monolithic structures is subjected to a combination of static load due to the submerged weight of the structure and stochastic non-stationary loads as a result of the wave loads on the vertical wall. The stress conditions in the soil below a foundation exposed to both...

  5. Installation of foundation fieldbus to KUR

    International Nuclear Information System (INIS)

    The instrumentation and control system for the research reactor in Research Reactor Institute, Kyoto University has been used for the safe and steady operation since the initial critical attainment in 1964. It has been modified and added many devices in the chance of increasing the reactor power from 1 MW to 5 MW, installing new experimental facilities or fitting to modified nuclear regulations. In order to avoid the unscheduled shutdown of the research reactor by cause the failure of the devices, most of instrumentation system was renewed in 1999. Operating the research reactor more safely and reliably, Supervisory Control Automation and Data Acquisition System which employed personal computers with the Windows NT operating system was added to the conventional instrumentation system, and the fieldbus system called Foundation Fieldbus was installed. Compared with conventional instrumentation system, each fieldbus system has some advantages. Many kinds of fieldbus systems have been developed and sold on the markets in some countries. Foundation Fieldbus standardizing international, which was able to use the devices made by multi-vendor was tentatively installed to study particular techniques about Foundation Fieldbus. The primary coolant flow rate, the temperature difference between the reactor tank inlet and outlet temperatures, the calorimetric power and the reactor power in nuclear instrumentation are monitored on human-machine interface devices on the fieldbus. The programmable logic controller is employed to control the information system for the reactor. This paper introduces Foundation Fieldbus installed. (author)

  6. Vibrations of a pipe on elastic foundations

    Indian Academy of Sciences (India)

    S V Lilkova-Markova; D S Lolov

    2004-06-01

    A cantilevered pipe subjected to external transverse (or lateral) force is investigated. Two cases of elastic foundations are considered: rotational and both linear and rotational. The major findings are the variations in frequency with flow velocity and displacements at different points and times.

  7. Excavationless Exterior Foundation Insulation Field Study

    Energy Technology Data Exchange (ETDEWEB)

    Schirber, T.; Mosiman, G.; Ojczyk, C.

    2014-10-01

    Building science research supports installing exterior (soil side) foundation insulation as the optimal method to enhance the hygrothermal performance of new homes. With exterior foundation insulation, water management strategies are maximized while insulating the basement space and ensuring a more even temperature at the foundation wall. However, such an approach can be very costly and disruptive when applied to an existing home, requiring deep excavation around the entire house. The NorthernSTAR Building America Partnership team implemented an innovative, minimally invasive foundation insulation upgrade technique on an existing home. The approach consisted of using hydrovac excavation technology combined with a liquid insulating foam. The team was able to excavate a continuous 4" wide by 4' to 5' deep trench around the entire house, 128 linear feet, except for one small part under the stoop that was obstructed with concrete debris. The combination pressure washer and vacuum extraction technology also enabled the elimination of large trenches and soil stockpiles normally produced by backhoe excavation. The resulting trench was filled with liquid insulating foam, which also served as a water-control layer of the assembly. The insulation was brought above grade using a liquid foam/rigid foam hybrid system and terminated at the top of the rim joist. Cost savings over the traditional excavation process ranged from 23% to 50%. The excavationless process could result in even greater savings since replacement of building structures, exterior features, utility meters, and landscaping would be minimal or non-existent in an excavationless process.

  8. Western European Art Foundations and Publishing

    Science.gov (United States)

    King, Lindsay M.; Clement, Russell T.

    2011-01-01

    Western European art foundations create invaluable opportunities for research and exhibition by artists, curators, and scholars. These activities are often documented and disseminated via high-quality publications. This article highlights an important but under-recognized collecting resource for academic and museum libraries by profiling several…

  9. Theoretical Foundations of Learning Environments. Second Edition

    Science.gov (United States)

    Jonassen, David, Ed.; Land, Susan, Ed.

    2012-01-01

    "Theoretical Foundations of Learning Environments" provides students, faculty, and instructional designers with a clear, concise introduction to the major pedagogical and psychological theories and their implications for the design of new learning environments for schools, universities, or corporations. Leading experts describe the most important…

  10. The Foundations of Modern Time Series Analysis

    CERN Document Server

    Mills, Professor Terence C

    2011-01-01

    This book develops the analysis of Time Series from its formal beginnings in the 1890s through to the publication of Box and Jenkins' watershed publication in 1970, showing how these methods laid the foundations for the modern techniques of Time Series analysis that are in use today.

  11. The Emotional Foundations of Social Understanding

    Science.gov (United States)

    Warren, Heather K.; Denham, Susanne A.; Bassett, Hideko H.

    2008-01-01

    The infant and toddler years are a watershed of development in the emotional domain. These skills lay the foundation for positive social interactions, and ultimately, academic and life success. This article describes the development of three skills that are central in creating successful relationships: expressing emotion, understanding emotion,…

  12. Foundational Academic Development: Building Collegiality across Divides?

    Science.gov (United States)

    Clarke, Catherine; Reid, Jacqueline

    2013-01-01

    There is limited research into the effectiveness of non-accredited foundational courses for new academic staff. An ongoing issue is that of attention and anxiety overload in the critical first period of employment when the challenges of establishing oneself in a new collegial environment are most acute. Approaches to addressing this issue may be…

  13. Research and the Bernard van Leer Foundation.

    Science.gov (United States)

    Wall, W. D.

    1978-01-01

    Outlines Bernard van Leer Foundation sponsorship of action programs and research studies of child development in 25 countries. The problems and possibilities of such work are discussed from the viewpoint of evaluation and the contribution which can be made to the behavioral sciences--notably to comparative child development. (Author/RH)

  14. Shallow foundation model tests in Europe

    Czech Academy of Sciences Publication Activity Database

    Feda, Jaroslav; Simonini, P.; Arslan, U.; Georgiodis, M.; Laue, J.; Pinto, I.

    1999-01-01

    Roč. 2, č. 4 (1999), s. 447-475. ISSN 1436-6517. [Int. Conf. on Soil-Structure Interaction in Urban Civ. Engineering. Darmstadt, 08.10.1999-09.10.1999] R&D Projects: GA MŠk OC C7.10 Keywords : shallow foundations * model tests * sandy subsoil * bearing capacity * settlement Subject RIV: JM - Building Engineering

  15. Vibrations of machine foundations and surrounding soil

    NARCIS (Netherlands)

    Van Koten, H.; Hoogenboom, P.C.J.

    2012-01-01

    Rotating or pulsing machines are often placed on concrete foundations supported by soil. The machines cause vibrations in the building and in the surrounding soil. This paper provides information, formulas and calculation examples to predict these vibrations. The formulas have been experimentally te

  16. Foundations of Laic Moral Education in Spain

    Science.gov (United States)

    Soria, Juan Manuel Fernandez

    2008-01-01

    This article studies the foundations of laic moral education in Spain. Some aspects of laic moral education can also be found in other nations, including the emergence of the laic man or the need for an educating State; other aspects of laic moral education, however, are peculiar to the Spanish case, such as the influence of Krausoinstitutionism…

  17. The Promises of Moral Foundations Theory

    Science.gov (United States)

    Musschenga, Bert

    2013-01-01

    In this article I examine whether Moral Foundations Theory can fulfil the promises that Haidt claims for the theory: that it will help in developing new approaches to moral education and to the moral conflicts that divide our diverse society. I argue that, first, the model that Haidt suggests for understanding the plurality of moralities--a shared…

  18. Readiness, Behavior, and Foundational Mathematics Course Success

    Science.gov (United States)

    Li, Kevin; Zelenka, Richard; Buonaguidi, Larry; Beckman, Robert; Casillas, Alex; Crouse, Jill; Allen, Jeff; Hanson, Mary Ann; Acton, Tara; Robbins, Steve

    2013-01-01

    This study examines the effects of math readiness and student course behavior (e.g., attendance, participation, homework completion) on knowledge gain and course success using two samples of students enrolled in foundational skills (noncredit-bearing) mathematics courses. As hypothesized, entering student mathematics readiness and course behavior…

  19. Mining Foundations, Trust and Funds : A Sourcebook

    OpenAIRE

    World Bank, (WB)

    2010-01-01

    Mining operations increasingly exist in remote parts of developing countries, and with the combined challenges in public services delivery and development assistance, this is drawing the mining sector further into catalyzing development at local, regional and national levels. Responding to this multifaceted trend, the mining sector has increasingly turned to foundations, trusts and funds a...

  20. Foundation: Transforming data bases into knowledge bases

    Science.gov (United States)

    Purves, R. B.; Carnes, James R.; Cutts, Dannie E.

    1987-01-01

    One approach to transforming information stored in relational data bases into knowledge based representations and back again is described. This system, called Foundation, allows knowledge bases to take advantage of vast amounts of pre-existing data. A benefit of this approach is inspection, and even population, of data bases through an intelligent knowledge-based front-end.