WorldWideScience

Sample records for model rocket curriculum

  1. Pegasus Rocket Model

    Science.gov (United States)

    1996-01-01

    A small, desk-top model of Orbital Sciences Corporation's Pegasus winged rocket booster. Pegasus is an air-launched space booster produced by Orbital Sciences Corporation and Hercules Aerospace Company (initially; later, Alliant Tech Systems) to provide small satellite users with a cost-effective, flexible, and reliable method for placing payloads into low earth orbit. Pegasus has been used to launch a number of satellites and the PHYSX experiment. That experiment consisted of a smooth glove installed on the first-stage delta wing of the Pegasus. The glove was used to gather data at speeds of up to Mach 8 and at altitudes approaching 200,000 feet. The flight took place on October 22, 1998. The PHYSX experiment focused on determining where boundary-layer transition occurs on the glove and on identifying the flow mechanism causing transition over the glove. Data from this flight-research effort included temperature, heat transfer, pressure measurements, airflow, and trajectory reconstruction. Hypersonic flight-research programs are an approach to validate design methods for hypersonic vehicles (those that fly more than five times the speed of sound, or Mach 5). Dryden Flight Research Center, Edwards, California, provided overall management of the glove experiment, glove design, and buildup. Dryden also was responsible for conducting the flight tests. Langley Research Center, Hampton, Virginia, was responsible for the design of the aerodynamic glove as well as development of sensor and instrumentation systems for the glove. Other participating NASA centers included Ames Research Center, Mountain View, California; Goddard Space Flight Center, Greenbelt, Maryland; and Kennedy Space Center, Florida. Orbital Sciences Corporation, Dulles, Virginia, is the manufacturer of the Pegasus vehicle, while Vandenberg Air Force Base served as a pre-launch assembly facility for the launch that included the PHYSX experiment. NASA used data from Pegasus launches to obtain considerable

  2. Measuring Model Rocket Engine Thrust Curves

    Science.gov (United States)

    Penn, Kim; Slaton, William V.

    2010-01-01

    This paper describes a method and setup to quickly and easily measure a model rocket engine's thrust curve using a computer data logger and force probe. Horst describes using Vernier's LabPro and force probe to measure the rocket engine's thrust curve; however, the method of attaching the rocket to the force probe is not discussed. We show how a…

  3. Pressure And Thermal Modeling Of Rocket Launches

    Science.gov (United States)

    Smith, Sheldon D.; Myruski, Brian L.; Farmer, Richard C.; Freeman, Jon A.

    1995-01-01

    Report presents mathematical model for use in designing rocket-launching stand. Predicts pressure and thermal environment, as well as thermal responses of structures to impinging rocket-exhaust plumes. Enables relatively inexperienced analyst to determine time-varying distributions and absolute levels of pressure and heat loads on structures.

  4. Criminal Justice Curriculum Models.

    Science.gov (United States)

    Lumb, Richard C.; Alm, Mary

    This report outlines three new curriculum models for criminal justice developed as part of the North Carolina Community College System's Curriculum Improvement Project (CIP): the "Generalist"; "Generalist-with-Options" for a Law Enforcement Specialty, Corrections Specialty, or Protective Services Specialty; and "Generalist…

  5. The Integrated Curriculum Model (ICM)

    Science.gov (United States)

    VanTassel-Baska, Joyce; Wood, Susannah

    2010-01-01

    This article explicates the Integrated Curriculum Model (ICM) which has been used worldwide to design differentiated curriculum, instruction, and assessment units of study for gifted learners. The article includes a literature review of appropriate curriculum features for the gifted, other extant curriculum models, the theoretical basis for the…

  6. The Chameleon Solid Rocket Propulsion Model

    International Nuclear Information System (INIS)

    Robertson, Glen A.

    2010-01-01

    The Khoury and Weltman (2004a and 2004b) Chameleon Model presents an addition to the gravitation force and was shown by the author (Robertson, 2009a and 2009b) to present a new means by which one can view other forces in the Universe. The Chameleon Model is basically a density-dependent model and while the idea is not new, this model is novel in that densities in the Universe to include the vacuum of space are viewed as scalar fields. Such an analogy gives the Chameleon scalar field, dark energy/dark matter like characteristics; fitting well within cosmological expansion theories. In respect to this forum, in this paper, it is shown how the Chameleon Model can be used to derive the thrust of a solid rocket motor. This presents a first step toward the development of new propulsion models using density variations verse mass ejection as the mechanism for thrust. Further, through the Chameleon Model connection, these new propulsion models can be tied to dark energy/dark matter toward new space propulsion systems utilizing the vacuum scalar field in a way understandable by engineers, the key toward the development of such systems. This paper provides corrections to the Chameleon rocket model in Robertson (2009b).

  7. Dynamical Model of Rocket Propellant Loading with Liquid Hydrogen

    Data.gov (United States)

    National Aeronautics and Space Administration — A dynamical model describing the multi-stage process of rocket propellant loading has been developed. It accounts for both the nominal and faulty regimes of...

  8. This "Is" Rocket Science!

    Science.gov (United States)

    Keith, Wayne; Martin, Cynthia; Veltkamp, Pamela

    2013-01-01

    Using model rockets to teach physics can be an effective way to engage students in learning. In this paper, we present a curriculum developed in response to an expressed need for helping high school students review physics equations in preparation for a state-mandated exam. This required a mode of teaching that was more advanced and analytical…

  9. Thermohydraulic modeling of nuclear thermal rockets: The KLAXON code

    International Nuclear Information System (INIS)

    Hall, M.L.; Rider, W.J.; Cappiello, M.W.

    1992-01-01

    The hydrogen flow from the storage tanks, through the reactor core, and out the nozzle of a Nuclear Thermal Rocket is an integral design consideration. To provide an analysis and design tool for this phenomenon, the KLAXON code is being developed. A shock-capturing numerical methodology is used to model the gas flow (the Harten, Lax, and van Leer method, as implemented by Einfeldt). Preliminary results of modeling the flow through the reactor core and nozzle are given in this paper

  10. The Multidimensional Curriculum Model (MdCM)

    Science.gov (United States)

    Vidergor, Hava E.

    2010-01-01

    The multidimensional Curriculum Model (MdCM) helps teachers to better prepare gifted and able students for our changing world, acquiring much needed skills. It is influenced by general learning theory of constructivism, notions of preparing students for 21st century, Teaching the Future Model, and current comprehensive curriculum models for…

  11. Multiphase Modeling of Solid Rocket Motor Internal Environment, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Solid rocket motor (SRM) design requires thorough understanding of the slag accumulation process in order to: predict thrust continuity, optimize propellant...

  12. Mathematical Modeling in the Undergraduate Curriculum

    Science.gov (United States)

    Toews, Carl

    2012-01-01

    Mathematical modeling occupies an unusual space in the undergraduate mathematics curriculum: typically an "advanced" course, it nonetheless has little to do with formal proof, the usual hallmark of advanced mathematics. Mathematics departments are thus forced to decide what role they want the modeling course to play, both as a component of the…

  13. Experimental validation of solid rocket motor damping models

    Science.gov (United States)

    Riso, Cristina; Fransen, Sebastiaan; Mastroddi, Franco; Coppotelli, Giuliano; Trequattrini, Francesco; De Vivo, Alessio

    2017-12-01

    In design and certification of spacecraft, payload/launcher coupled load analyses are performed to simulate the satellite dynamic environment. To obtain accurate predictions, the system damping properties must be properly taken into account in the finite element model used for coupled load analysis. This is typically done using a structural damping characterization in the frequency domain, which is not applicable in the time domain. Therefore, the structural damping matrix of the system must be converted into an equivalent viscous damping matrix when a transient coupled load analysis is performed. This paper focuses on the validation of equivalent viscous damping methods for dynamically condensed finite element models via correlation with experimental data for a realistic structure representative of a slender launch vehicle with solid rocket motors. A second scope of the paper is to investigate how to conveniently choose a single combination of Young's modulus and structural damping coefficient—complex Young's modulus—to approximate the viscoelastic behavior of a solid propellant material in the frequency band of interest for coupled load analysis. A scaled-down test article inspired to the Z9-ignition Vega launcher configuration is designed, manufactured, and experimentally tested to obtain data for validation of the equivalent viscous damping methods. The Z9-like component of the test article is filled with a viscoelastic material representative of the Z9 solid propellant that is also preliminarily tested to investigate the dependency of the complex Young's modulus on the excitation frequency and provide data for the test article finite element model. Experimental results from seismic and shock tests performed on the test configuration are correlated with numerical results from frequency and time domain analyses carried out on its dynamically condensed finite element model to assess the applicability of different equivalent viscous damping methods to describe

  14. This Is Rocket Science!

    Science.gov (United States)

    Keith, Wayne; Martin, Cynthia; Veltkamp, Pamela

    2013-09-01

    Using model rockets to teach physics can be an effective way to engage students in learning. In this paper, we present a curriculum developed in response to an expressed need for helping high school students review physics equations in preparation for a state-mandated exam. This required a mode of teaching that was more advanced and analytical than that offered by Estes Industries, but more basic than the analysis of Nelson et al. In particular, drag is neglected until the very end of the exercise, which allows the concept of conservation of energy to be shown when predicting the rocket's flight. Also, the variable mass of the rocket motor is assumed to decrease linearly during the flight (while the propulsion charge and recovery delay charge are burning) and handled simplistically by using an average mass value. These changes greatly simplify the equations needed to predict the times and heights at various stages of flight, making it more useful as a review of basic physics. Details about model rocket motors, range safety, and other supplemental information may be found online at Apogee Components4 and the National Association of Rocketry.5

  15. Curriculum Development: A Philosophical Model.

    Science.gov (United States)

    Bruening, William H.

    Presenting models based on the philosophies of Carl Rogers, John Dewey, Erich Fromm, and Jean-Paul Sartre, this paper proposes a philosophical approach to education and concludes with pragmatic suggestions concerning teaching based on a fully-functioning-person model. The fully-functioning person is characterized as being open to experience,…

  16. Two phase flow combustion modelling of a ducted rocket

    NARCIS (Netherlands)

    Stowe, R.A.; Dubois, C.; Harris, P.G.; Mayer, A.E.H.J.; Champlain, A. de; Ringuette, S.

    2001-01-01

    Under a co-operative program, the Defence Research Establishment Valcartier and Université Laval in Canada and the TNO Prins Maurits Laboratory in the Netherlands have studied the use of a ducted rocket for missile propulsion. Hot-flow direct-connect combustion experiments using both simulated and

  17. The Information Technology Model Curriculum

    Science.gov (United States)

    Ekstrom, Joseph J.; Gorka, Sandra; Kamali, Reza; Lawson, Eydie; Lunt, Barry; Miller, Jacob; Reichgelt, Han

    2006-01-01

    The last twenty years has seen the development of demand for a new type of computing professional, which has resulted in the emergence of the academic discipline of Information Technology (IT). Numerous colleges and universities across the country and abroad have responded by developing programs without the advantage of an existing model for…

  18. Examining IS Curriculum Profiles and the IS 2010 Model Curriculum Guidelines in AACSB-Accredited Schools

    Science.gov (United States)

    Mills, Robert J.; Velasquez, Nicole Forsgren; Fadel, Kelly J.; Bell, Corbin C.

    2012-01-01

    The IS 2010 Model Curriculum Guidelines were developed to provide recommendations for standardized information systems curricula while simultaneously allowing for customization within individual programs. While some studies have examined program adherence to the IS 2010 Model Curriculum Guidelines, a more detailed analysis of IS curriculum…

  19. Implementing a Four-Phase Curriculum Review Model

    Science.gov (United States)

    LaCursia, Nancy

    2010-01-01

    This article describes how to implement the four-phase curriculum review model, a simplified process for renovating a high school health and physical education curriculum. Although this model was used at a large suburban high school, it could be adapted for use by smaller schools or other disciplines. The four phases of this model are: (1) needs…

  20. Functional Curriculum Models for Secondary Students with Mild Mental Impairment

    Science.gov (United States)

    Bouck, Emily C.

    2009-01-01

    This paper analyzed 10 commercially available functional curriculum models designed for secondary students with mild-to-moderate mental impairment. The models were examined with respect to the inclusion of functional curriculum components, the domains and subdomains of adulthood, the materials identified by the model to be used to deliver the…

  1. Mathematical modeling creation for curriculum based on ontology. Part 1

    OpenAIRE

    PIYAVSKY S.A.; LARUKHIN V.B.

    2012-01-01

    This article delivers a mathematical optimal formation model of curriculum based on the solution of multi-criteria optimization problem. A mathematical model of optimal curriculum shaping based on the solution of multi-criteria optimization. In combination with the previously developed ontology of the educational process, it allows us to offer information technology of forming curriculum at various levels of training in universities personalized for each students

  2. The Role of Various Curriculum Models on Physical Activity Levels

    Science.gov (United States)

    Culpepper, Dean O.; Tarr, Susan J.; Killion, Lorraine E.

    2011-01-01

    Researchers have suggested that physical education curricula can be highly effective in increasing physical activity levels at school (Sallis & Owen, 1999). The purpose of this study was to investigate the impact of various curriculum models on physical activity. Total steps were measured on 1,111 subjects and three curriculum models were studied…

  3. Are We Teaching the IS 2009 Model Curriculum?

    Science.gov (United States)

    Apigian, Charles H.; Gambill, Stanley E.

    2010-01-01

    This article presents the results of research that gathered data about undergraduate information systems curricula and compared it to previous studies and the IS 2009 working model curriculum which is now named IS 2010 Model Curriculum after final approval. Data was collected from the websites of 240 colleges and universities identified as having…

  4. Accessing Curriculum Through Technology Tools (ACTTT): A Model Development Project

    Science.gov (United States)

    Daytner, Katrina M.; Johanson, Joyce; Clark, Letha; Robinson, Linda

    2012-01-01

    Accessing Curriculum Through Technology Tools (ACTTT), a project funded by the U.S. Office of Special Education Programs (OSEP), developed and tested a model designed to allow children in early elementary school, including those "at risk" and with disabilities, to better access, participate in, and benefit from the general curriculum.…

  5. Verification of Model of Calculation of Intra-Chamber Parameters In Hybrid Solid-Propellant Rocket Engines

    Directory of Open Access Journals (Sweden)

    Zhukov Ilya S.

    2016-01-01

    Full Text Available On the basis of obtained analytical estimate of characteristics of hybrid solid-propellant rocket engine verification of earlier developed physical and mathematical model of processes in a hybrid solid-propellant rocket engine for quasi-steady-state flow regime was performed. Comparative analysis of calculated and analytical data indicated satisfactory comparability of simulation results.

  6. Mechanical Slosh Models for Rocket-Propelled Spacecraft

    Science.gov (United States)

    Jang, Jiann-Woei; Alaniz, Abram; Yang, Lee; Powers. Joseph; Hall, Charles

    2013-01-01

    Several analytical mechanical slosh models for a cylindrical tank with flat bottom are reviewed. Even though spacecrafts use cylinder shaped tanks, most of those tanks usually have elliptical domes. To extend the application of the analytical models for a cylindrical tank with elliptical domes, the modified slosh parameter models are proposed in this report by mapping an elliptical dome cylindrical tank to a flat top/bottom cylindrical tank while maintaining the equivalent liquid volume. For the low Bond number case, the low-g slosh models were also studied. Those low-g models can be used for Bond number > 10. The current low-g slosh models were also modified to extend their applications for the case that liquid height is smaller than the tank radius. All modified slosh models are implemented in MATLAB m-functions and are collected in the developed MST (Mechanical Slosh Toolbox).

  7. Transient Mathematical Modeling for Liquid Rocket Engine Systems: Methods, Capabilities, and Experience

    Science.gov (United States)

    Seymour, David C.; Martin, Michael A.; Nguyen, Huy H.; Greene, William D.

    2005-01-01

    The subject of mathematical modeling of the transient operation of liquid rocket engines is presented in overview form from the perspective of engineers working at the NASA Marshall Space Flight Center. The necessity of creating and utilizing accurate mathematical models as part of liquid rocket engine development process has become well established and is likely to increase in importance in the future. The issues of design considerations for transient operation, development testing, and failure scenario simulation are discussed. An overview of the derivation of the basic governing equations is presented along with a discussion of computational and numerical issues associated with the implementation of these equations in computer codes. Also, work in the field of generating usable fluid property tables is presented along with an overview of efforts to be undertaken in the future to improve the tools use for the mathematical modeling process.

  8. Rocket Measurements Within a Polar Cap Arc: Ionospheric Modelling,

    Science.gov (United States)

    1987-11-19

    References Aarons, Jules , Global morphology of ionospheric scintillations, Proc. IEEE, 70, 360, 1982. Banks, P.M., Chapell, C.R., and A.F. Nagy, A new model...penetration of soft electrons into the ionosphere, Planet. Space Sci., 24, 409, 1975. Mantas, George P., Carlson, Herbert C. Jr., and Caesar H. LaHoz

  9. A solid reactor core thermal model for nuclear thermal rockets

    International Nuclear Information System (INIS)

    Rider, W.J.; Cappiello, M.W.; Liles, D.R.

    1991-01-01

    A Helium/Hydrogen Cooled Reactor Analysis (HERA) computer code has been developed. HERA has the ability to model arbitrary geometries in three dimensions, which allows the user to easily analyze reactor cores constructed of prismatic graphite elements. The code accounts for heat generation in the fuel, control rods, and other structures; conduction and radiation across gaps; convection to the coolant; and a variety of boundary conditions. The numerical solution scheme has been optimized for vector computers, making long transient analyses economical. Time integration is either explicit or implicit, which allows the use of the model to accurately calculate both short- or long-term transients with an efficient use of computer time. Both the basic spatial and temporal integration schemes have been benchmarked against analytical solutions

  10. Development of Detonation Modeling Capabilities for Rocket Test Facilities: Hydrogen-Oxygen-Nitrogen Mixtures

    Science.gov (United States)

    Allgood, Daniel C.

    2016-01-01

    The objective of the presented work was to develop validated computational fluid dynamics (CFD) based methodologies for predicting propellant detonations and their associated blast environments. Applications of interest were scenarios relevant to rocket propulsion test and launch facilities. All model development was conducted within the framework of the Loci/CHEM CFD tool due to its reliability and robustness in predicting high-speed combusting flow-fields associated with rocket engines and plumes. During the course of the project, verification and validation studies were completed for hydrogen-fueled detonation phenomena such as shock-induced combustion, confined detonation waves, vapor cloud explosions, and deflagration-to-detonation transition (DDT) processes. The DDT validation cases included predicting flame acceleration mechanisms associated with turbulent flame-jets and flow-obstacles. Excellent comparison between test data and model predictions were observed. The proposed CFD methodology was then successfully applied to model a detonation event that occurred during liquid oxygen/gaseous hydrogen rocket diffuser testing at NASA Stennis Space Center.

  11. The model of beam-plasma discharge in the rocket environment during an electron beam injection in the ionosphere

    International Nuclear Information System (INIS)

    Mishin, E.V.; Ruzhin, Yu.Ya.

    1980-01-01

    The model of beam-plasma discharge in the rocket environment during electron beam injection in the ionosphere is constructed. The discharge plasma density dependence on the neutral gas concentration and the beam parameters is found

  12. High-Fidelity Gas and Granular Flow Physics Models for Rocket Exhaust Interaction with Lunar Soil, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — Current modeling of Lunar and Martian soil erosion and debris transport caused by rocket plume impingement lacks essential physics from the peculiar granular...

  13. Coupled Lagrangian impingement spray model for doublet impinging injectors under liquid rocket engine operating conditions

    Directory of Open Access Journals (Sweden)

    Qiang WEI

    2017-08-01

    Full Text Available To predict the effect of the liquid rocket engine combustion chamber conditions on the impingement spray, the conventional uncoupled spray model for impinging injectors is extended by considering the coupling of the jet impingement process and the ambient gas field. The new coupled model consists of the plain-orifice sub-model, the jet-jet impingement sub-model and the droplet collision sub-model. The parameters of the child droplet are determined with the jet-jet impingement sub-model using correlations about the liquid jet parameters and the chamber conditions. The overall model is benchmarked under various impingement angles, jet momentum and off-center ratios. Agreement with the published experimental data validates the ability of the model to predict the key spray characteristics, such as the mass flux and mixture ratio distributions in quiescent air. Besides, impinging sprays under changing ambient pressure and non-uniform gas flow are investigated to explore the effect of liquid rocket engine chamber conditions. First, a transient impingement spray during engine start-up phase is simulated with prescribed pressure profile. The minimum average droplet diameter is achieved when the orifices work in cavitation state, and is about 30% smaller than the steady single phase state. Second, the effect of non-uniform gas flow produces off-center impingement and the rotated spray fan by 38°. The proposed model suggests more reasonable impingement spray characteristics than the uncoupled one and can be used as the first step in the complex simulation of coupling impingement spray and combustion in liquid rocket engines.

  14. Rocket University at KSC

    Science.gov (United States)

    Sullivan, Steven J.

    2014-01-01

    "Rocket University" is an exciting new initiative at Kennedy Space Center led by NASA's Engineering and Technology Directorate. This hands-on experience has been established to develop, refine & maintain targeted flight engineering skills to enable the Agency and KSC strategic goals. Through "RocketU", KSC is developing a nimble, rapid flight engineering life cycle systems knowledge base. Ongoing activities in RocketU develop and test new technologies and potential customer systems through small scale vehicles, build and maintain flight experience through balloon and small-scale rocket missions, and enable a revolving fresh perspective of engineers with hands on expertise back into the large scale NASA programs, providing a more experienced multi-disciplined set of systems engineers. This overview will define the Program, highlight aspects of the training curriculum, and identify recent accomplishments and activities.

  15. The Isinglass Auroral Sounding Rocket Campaign: data synthesis incorporating remote sensing, in situ observations, and modelling

    Science.gov (United States)

    Lynch, K. A.; Clayton, R.; Roberts, T. M.; Hampton, D. L.; Conde, M.; Zettergren, M. D.; Burleigh, M.; Samara, M.; Michell, R.; Grubbs, G. A., II; Lessard, M.; Hysell, D. L.; Varney, R. H.; Reimer, A.

    2017-12-01

    The NASA auroral sounding rocket mission Isinglass was launched from Poker Flat Alaska in winter 2017. This mission consists of two separate multi-payload sounding rockets, over an array of groundbased observations, including radars and filtered cameras. The science goal is to collect two case studies, in two different auroral events, of the gradient scale sizes of auroral disturbances in the ionosphere. Data from the in situ payloads and the groundbased observations will be synthesized and fed into an ionospheric model, and the results will be studied to learn about which scale sizes of ionospheric structuring have significance for magnetosphere-ionosphere auroral coupling. The in situ instrumentation includes thermal ion sensors (at 5 points on the second flight), thermal electron sensors (at 2 points), DC magnetic fields (2 point), DC electric fields (one point, plus the 4 low-resource thermal ion RPA observations of drift on the second flight), and an auroral precipitation sensor (one point). The groundbased array includes filtered auroral imagers, the PFISR and SuperDarn radars, a coherent scatter radar, and a Fabry-Perot interferometer array. The ionospheric model to be used is a 3d electrostatic model including the effects of ionospheric chemistry. One observational and modelling goal for the mission is to move both observations and models of auroral arc systems into the third (along-arc) dimension. Modern assimilative tools combined with multipoint but low-resource observations allow a new view of the auroral ionosphere, that should allow us to learn more about the auroral zone as a coupled system. Conjugate case studies such as the Isinglass rocket flights allow for a test of the models' intepretation by comparing to in situ data. We aim to develop and improve ionospheric models to the point where they can be used to interpret remote sensing data with confidence without the checkpoint of in situ comparison.

  16. Integrating Surface Modeling into the Engineering Design Graphics Curriculum

    Science.gov (United States)

    Hartman, Nathan W.

    2006-01-01

    It has been suggested there is a knowledge base that surrounds the use of 3D modeling within the engineering design process and correspondingly within engineering design graphics education. While solid modeling receives a great deal of attention and discussion relative to curriculum efforts, and rightly so, surface modeling is an equally viable 3D…

  17. Models and automation technologies for the curriculum development

    Directory of Open Access Journals (Sweden)

    V. N. Volkova

    2016-01-01

    Full Text Available The aim of the research was to determine the sequence of the curriculum development stages on the basis of the system analysis, as well as to create models and information technologies for the implementation of thesestages.The methods and the models of the systems’ theory and the system analysis, including methods and automated procedures for structuring organizational aims, models and automated procedures for organizing complex expertise.On the basis of the analysis of existing studies in the field of curriculum modeling, using formal mathematical language, including optimization models, that help to make distribution of disciplines by years and semesters in accordance with the relevant restrictions, it is shown, that the complexity and dimension of these tasks require the development of special software; the problem of defining the input data and restrictions requires a large time investment, that seems to be difficult to provide in real conditions of plans’ developing, thus it is almost impossible to verify the objectivity of the input data and the restrictions in such models. For a complete analysis of the process of curriculum development it is proposed to use the system definition, based on the system-targeted approach. On the basis of this definition the reasonable sequence of the integrated stages for the development of the curriculum was justified: 1 definition (specification of the requirements for the educational content; 2 determining the number of subjects, included in the curriculum; 3 definition of the sequence of the subjects; 4 distribution of subjects by semesters. The models and technologies for the implementation of these stages of curriculum development were given in the article: 1 models, based on the information approach of A.Denisov and the modified degree of compliance with objectives based on Denisov’s evaluation index (in the article the idea of evaluating the degree of the impact of disciplines for realization

  18. Application of the IPI Model to a Perceptual Development Curriculum.

    Science.gov (United States)

    Rosner, Jerome

    The Individually Prescribed Instruction (IPI) Model developed by Bolvin and Glaser (1968) is applied to a perceptual development curriculum for children manifesting learning disabilities. The Model utilizes criterion referenced tests for behavioral objectives in four areas: general motor, visual motor, auditory motor, and integrative. Eight units…

  19. Interdisciplinary Science through the Parallel Curriculum Model: Lessons from the Sea

    Science.gov (United States)

    Hathcock, Stephanie J.

    2018-01-01

    The Parallel Curriculum Model (PCM) lends itself to considering curriculum development from different angles. It begins with a solid Core Curriculum and can then be extended through the Curriculum of Connections, Practice, and Identity. This article showcases a way of thinking about the creation of a PCM unit by providing examples from an…

  20. A Tale of Two Curricula: The Case for Pre-Requisites in the IS Model Curriculum

    Science.gov (United States)

    Reynolds, John H.; Ferguson, Roger C.; Leidig, Paul M.

    2016-01-01

    The most recent Information Systems (IS) Model Curriculum recommendations is IS2010. While the goal of this revision was to update the curriculum from IS2002, the end result was a change in curriculum design philosophy whereby a pre-requisite structure that fostered increasing depth of knowledge was flattened to make the curriculum easier to…

  1. Thermohydraulic Design Analysis Modeling for Korea Advanced NUclear Thermal Engine Rocket for Space Application

    Energy Technology Data Exchange (ETDEWEB)

    Nam, Seung Hyun; Choi, Jae Young; Venneria, Paolo F.; Jeong, Yong Hoon; Chang, Soon Heung [KAIST, Daejeon (Korea, Republic of)

    2015-05-15

    NTR engines have continued as a main stream based on the mature technology. The typical core design of the NERVA derived engines uses hexagonal shaped fuel elements with circular cooling channels and structural tie-tube elements for supporting the fuel elements, housing moderator and regeneratively cooling the moderator. The state-of-the-art NTR designs mostly use a fast or epithermal neutron spectrum core utilizing a HEU fuel to make a high power reactor with small and simple core geometry. Nuclear propulsion is the most promising and viable option to achieve challenging deep space missions. Particularly, the attractions of a NTR include excellent thrust and propellant efficiency, bimodal capability, proven technology, and safe and reliable performance. The KANUTER-HEU and -LEU are the innovative and futuristic NTR engines to reduce the reactor size and to implement a LEU fuel in the reactor by using thermal neutron spectrum. The KANUTERs have some features in the reactor design such as the integrated fuel element and the regeneratively cooling channels to increase room for moderator and heat transfer in the core, and ensuing rocket performance. To study feasible design points in terms of thermo-hydraulics and to estimate rocket performance of the KANUTERs, the NSES is under development. The model of the NSES currently focuses on thermo-hydraulic analysis of the peculiar and complex EHTGR design during the propulsion mode in steady-state. The results indicate comparable performance for future applications, even though it uses the heavier LEU fuel. In future, the NSES will be modified to obtain temperature distribution of the entire reactor components and then more extensive design analysis of neutronics, thermohydraulics and their coupling will be conducted to validate design feasibility and to optimize the reactor design enhancing the rocket performance.

  2. Theoretical Tools and Software for Modeling, Simulation and Control Design of Rocket Test Facilities

    Science.gov (United States)

    Richter, Hanz

    2004-01-01

    A rocket test stand and associated subsystems are complex devices whose operation requires that certain preparatory calculations be carried out before a test. In addition, real-time control calculations must be performed during the test, and further calculations are carried out after a test is completed. The latter may be required in order to evaluate if a particular test conformed to specifications. These calculations are used to set valve positions, pressure setpoints, control gains and other operating parameters so that a desired system behavior is obtained and the test can be successfully carried out. Currently, calculations are made in an ad-hoc fashion and involve trial-and-error procedures that may involve activating the system with the sole purpose of finding the correct parameter settings. The goals of this project are to develop mathematical models, control methodologies and associated simulation environments to provide a systematic and comprehensive prediction and real-time control capability. The models and controller designs are expected to be useful in two respects: 1) As a design tool, a model is the only way to determine the effects of design choices without building a prototype, which is, in the context of rocket test stands, impracticable; 2) As a prediction and tuning tool, a good model allows to set system parameters off-line, so that the expected system response conforms to specifications. This includes the setting of physical parameters, such as valve positions, and the configuration and tuning of any feedback controllers in the loop.

  3. Torpedo Rockets

    Science.gov (United States)

    2004-01-01

    All through the 13th to the 15th Centuries there were reports of many rocket experiments. For example, Joanes de Fontana of Italy designed a surface-rurning, rocket-powered torpedo for setting enemy ships on fire

  4. Rocket Flight.

    Science.gov (United States)

    Van Evera, Bill; Sterling, Donna R.

    2002-01-01

    Describes an activity for designing, building, and launching rockets that provides students with an intrinsically motivating and real-life application of what could have been classroom-only concepts. Includes rocket design guidelines and a sample grading rubric. (KHR)

  5. Cesar Chavez--Grade Five Model Curriculum and Resources.

    Science.gov (United States)

    California State Dept. of Education, Sacramento.

    In this California state curriculum model for grade 5, "United States History and Geography: A New Nation," students study the historical developments leading to the discovery and colonization of North America by European countries and the ensuing interactions between Native Americans, Europeans, and enslaved Americans. The curriculum…

  6. High Resolution Modeling of the Thermospheric Response to Energy Inputs During the RENU-2 Rocket Flight

    Science.gov (United States)

    Walterscheid, R. L.; Brinkman, D. G.; Clemmons, J. H.; Hecht, J. H.; Lessard, M.; Fritz, B.; Hysell, D. L.; Clausen, L. B. N.; Moen, J.; Oksavik, K.; Yeoman, T. K.

    2017-12-01

    The Earth's magnetospheric cusp provides direct access of energetic particles to the thermosphere. These particles produce ionization and kinetic (particle) heating of the atmosphere. The increased ionization coupled with enhanced electric fields in the cusp produces increased Joule heating and ion drag forcing. These energy inputs cause large wind and temperature changes in the cusp region. The Rocket Experiment for Neutral Upwelling -2 (RENU-2) launched from Andoya, Norway at 0745UT on 13 December 2015 into the ionosphere-thermosphere beneath the magnetic cusp. It made measurements of the energy inputs (e.g., precipitating particles, electric fields) and the thermospheric response to these energy inputs (e.g., neutral density and temperature, neutral winds). Complementary ground based measurements were made. In this study, we use a high resolution two-dimensional time-dependent non hydrostatic nonlinear dynamical model driven by rocket and ground based measurements of the energy inputs to simulate the thermospheric response during the RENU-2 flight. Model simulations will be compared to the corresponding measurements of the thermosphere to see what they reveal about thermospheric structure and the nature of magnetosphere-ionosphere-thermosphere coupling in the cusp. Acknowledgements: This material is based upon work supported by the National Aeronautics and Space Administration under Grants: NNX16AH46G and NNX13AJ93G. This research was also supported by The Aerospace Corporation's Technical Investment program

  7. Extensions to the time lag models for practical application to rocket engine stability design

    Science.gov (United States)

    Casiano, Matthew J.

    The combustion instability problem in liquid-propellant rocket engines (LREs) has remained a tremendous challenge since their discovery in the 1930s. Improvements are usually made in solving the combustion instability problem primarily using computational fluid dynamics (CFD) and also by testing demonstrator engines. Another approach is to use analytical models. Analytical models can be used such that design, redesign, or improvement of an engine system is feasible in a relatively short period of time. Improvements to the analytical models can greatly aid in design efforts. A thorough literature review is first conducted on liquid-propellant rocket engine (LRE) throttling. Throttling is usually studied in terms of vehicle descent or ballistic missile control however there are many other cases where throttling is important. It was found that combustion instabilities are one of a few major issues that occur during deep throttling (other major issues are heat transfer concerns, performance loss, and pump dynamics). In the past and again recently, gas injected into liquid propellants has shown to be a viable solution to throttle engines and to eliminate some forms of combustion instability. This review uncovered a clever solution that was used to eliminate a chug instability in the Common Extensible Cryogenic Engine (CECE), a modified RL10 engine. A separate review was also conducted on classic time lag combustion instability models. Several new stability models are developed by incorporating important features to the classic and contemporary models, which are commonly used in the aerospace rocket industry. The first two models are extensions of the original Crocco and Cheng concentrated combustion model with feed system contributions. A third new model is an extension to the Wenzel and Szuch double-time lag model also with feed system contributions. The first new model incorporates the appropriate injector acoustic boundary condition which is neglected in contemporary

  8. High-repetition-rate PIV investigations on a generic rocket model in sub- and supersonic flows

    Science.gov (United States)

    Bitter, Martin; Scharnowski, Sven; Hain, Rainer; Kähler, Christian J.

    2011-04-01

    High-repetition-rate PIV measurements were performed in the trisonic wind tunnel facility at the Bundeswehr University Munich in order to investigate the boundary layer parameters on a generic rocket model and the recirculation area in the wake of the model at Mach numbers up to Mach = 2.6. The data are required for the validation of unsteady flow simulations. Because of the limited run time of the blow-down wind tunnel, a high-repetition-rate PIV system was applied to obtain the flow statistics with high accuracy. The results demonstrate this method's potential to resolve small-scale flow phenomena over a wide field of view in a large Mach number range but also show its limitations for the investigations of wall-bounded flows.

  9. A 2-DOF model of an elastic rocket structure excited by a follower force

    Science.gov (United States)

    Brejão, Leandro F.; da Fonseca Brasil, Reyolando Manoel L. R.

    2017-10-01

    We present a two degree of freedom model of an elastic rocket structure excited by the follower force given by the motor thrust that is supposed to be always in the direction of the tangent to the deformed shape of the device at its lower tip. The model comprises two massless rigid pinned bars, initially in vertical position, connected by rotational springs. Lumped masses and dampers are considered at the connections. The generalized coordinates are the angular displacements of the bars with respect to the vertical. We derive the equations of motion via Lagrange’s equations and simulate its time evolution using Runge-Kutta 4th order time step-by-step numerical integration algorithm. Results indicate possible occurrence of stable and unstable vibrations, such as limit cycles.

  10. Kinetic modeling of auroral ion outflows observed by the VISIONS sounding rocket

    Science.gov (United States)

    Albarran, R. M.; Zettergren, M. D.

    2017-12-01

    The VISIONS (VISualizing Ion Outflow via Neutral atom imaging during a Substorm) sounding rocket was launched on Feb. 7, 2013 at 8:21 UTC from Poker Flat, Alaska, into an auroral substorm with the objective of identifying the drivers and dynamics of the ion outflow below 1000km. Energetic ion data from the VISIONS polar cap boundary crossing show evidence of an ion "pressure cooker" effect whereby ions energized via transverse heating in the topside ionosphere travel upward and are impeded by a parallel potential structure at higher altitudes. VISIONS was also instrumented with an energetic neutral atom (ENA) detector which measured neutral particles ( 50-100 eV energy) presumably produced by charge-exchange with the energized outflowing ions. Hence, inferences about ion outflow may be made via remotely-sensing measurements of ENAs. This investigation focuses on modeling energetic outflowing ion distributions observed by VISIONS using a kinetic model. This kinetic model traces large numbers of individual particles, using a guiding-center approximation, in order to allow calculation of ion distribution functions and moments. For the present study we include mirror and parallel electric field forces, and a source of ion cyclotron resonance (ICR) wave heating, thought to be central to the transverse energization of ions. The model is initiated with a steady-state ion density altitude profile and Maxwellian velocity distribution characterizing the initial phase-space conditions for multiple particle trajectories. This project serves to advance our understanding of the drivers and particle dynamics in the auroral ionosphere and to improve data analysis methods for future sounding rocket and satellite missions.

  11. Analytical modeling of the gas generator frequency response in hybrid rocket boosters

    Science.gov (United States)

    Osherov, A.; Natan, B.; Gany, A.

    1996-10-01

    Différent types of hybrid engines are considered candidates for space launchers. The gas generator hybrid engine consists of a fuel-rich solid propellant gas generator whose partially burned products are mixed and further burned with a liquid oxidizer in a separate combustion chamber. The objective of this paper is to model and analyze the frequency response characteristics of such a gas generator, as a part of the problem of hybrid rockets longitudinal dynamic instability (POGO). The analysis takes into account the coupling between the gas flow within the grain ports and the elastic body vibrations. In principle, the gas generator admittance coincides with the response of a 'quarter-wave' resonator with dissipative force. It is found that the gas generator structure elasticity affects significantly the GG admittance in both the resonance frequency and the amplification factor.

  12. Shared Curriculum Model: A Promising Practice for Education Transformation.

    Science.gov (United States)

    Close, Liz; Gorski, Mary Sue; Sroczynski, Maureen; Farmer, Pat; Wortock, Jean

    2015-12-01

    The shared curriculum model is one of four successful models of academic progression identified through a consensus-building process facilitated by The Future of Nursing: Campaign for Action, with support from the Robert Wood Johnson Foundation, AARP, and the AARP Foundation. Seamless academic progression from the associate degree in nursing (ADN) to the baccalaureate degree in nursing (BSN) is achieved either by simultaneously revising both ADN and BSN curricula or by making targeted adjustments in ADN or BSN curricula to create a unified academic progression. Systematic vetting and definitive agreement on nursing prerequisites and corequisites, general education courses, nursing major content, and general degree requirements are necessary to ensure coordinated degree progression. A standardized set of expectations for beginning professional practice and for unique baccalaureate nursing knowledge ensures vital nursing content across the ADN-to-BSN continuum. Examples of state and regional ADN-to-BSN progression programs using the shared curriculum model are highlighted. The shared curriculum model is a promising practical and sustainable approach to seamless ADN-to-BSN academic progression. Copyright 2015, SLACK Incorporated.

  13. Development of a model for baffle energy dissipation in liquid fueled rocket engines

    Science.gov (United States)

    Miller, Nathan A.

    In this thesis the energy dissipation from a combined hub and blade baffle structure in a combustion chamber of a liquid-fueled rocket engine is modeled and computed. An analytical model of the flow stabilization due to the effect of combined radial and hub blades was developed. The rate of energy dissipation of the baffle blades was computed using a corner-flow model that included unsteady flow separation and turbulence effects. For the inviscid portion of the flow field, a solution methodology was formulated using an eigenfunction expansion and a velocity potential matching technique. Parameters such as local velocity, elemental path length, effective viscosity, and local energy dissipation rate were computed as a function of the local angle alpha for a representative baffle blade, and compared to results predicted by the Baer-Mitchell blade dissipation model. The sensitivity of the model to the overall engine acoustic oscillation mode, blade length, and thickness was also computed and compared to previous results. Additional studies were performed to determine the sensitivity to input parameters such as the dimensionless turbulence coefficient, the location of the potential difference in the generation of the dividing streamline, the number of baffle blades and the size of the central hub. Stability computations of a test engine indicated that when the baffle length is increased, the baffles provide increased stabilization effects. The model predicts greatest dissipation for radial modes with a hub radius at approximately half the chamber's radius.

  14. A model for curriculum development and student evaluation

    Directory of Open Access Journals (Sweden)

    Šefer Jasmina P.

    2002-01-01

    Full Text Available The paper outlines theoretical foundations for investigations to be conducted in our education, based on USA (DISCOVERY and Yugoslav (CREATIVITY previous projects that dealt with developing, investigating and evaluating (a abilities of creative problem solving within seven types of intelligence after the Gardner model and (b curriculum that provides and encourages the development of those abilities. Divergent thinking and creativity in all spheres of intellectual behavior in teaching are encouraged by introducing open-type questions, play, exploring activities and multimedia integrative-interdisciplinary thematic approach to problem solving. Multiple intelligence and a dimensional model of problem solving present theoretical foundations for curriculum development and a new qualitative approach to process evaluation of student's various abilities. Investigations should make provisions for comparing the results obtained in various cultures and for integrating best solutions into a common whole. Comparing the results of cultures and testing theoretical models and instruments for the evaluation of students are the outcomes essential to the science of pedagogy. Curriculum development oriented to problem and divergent thinking in different areas, intellectual functioning, and enrichment of the choice of instruments for multiple process evaluation of students can also significantly contribute to the current reform of Yugoslav school, development of student abilities and teacher education and in-service training.

  15. Curriculum inventory: Modeling, sharing and comparing medical education programs.

    Science.gov (United States)

    Ellaway, Rachel H; Albright, Susan; Smothers, Valerie; Cameron, Terri; Willett, Timothy

    2014-03-01

    Abstract descriptions of how curricula are structured and run. The American National Standards Institute (ANSI) MedBiquitous Curriculum Inventory Standard provides a technical syntax through which a wide range of different curricula can be expressed and subsequently compared and analyzed. This standard has the potential to shift curriculum mapping and reporting from a somewhat disjointed and institution-specific undertaking to something that is shared among multiple medical schools and across whole medical education systems. Given the current explosion of different models of curricula (time-free, competency-based, socially accountable, distributed, accelerated, etc.), the ability to consider this diversity using a common model has particular value in medical education management and scholarship. This article describes the development and structure of the Curriculum Inventory Standard as a way of standardizing the modeling of different curricula for audit, evaluation and research purposes. It also considers the strengths and limitations of the current standard and the implications for a medical education world in which this level of commonality, precision, and accountability for curricular practice is the norm rather than the exception.

  16. Coupled Solid Rocket Motor Ballistics and Trajectory Modeling for Higher Fidelity Launch Vehicle Design

    Science.gov (United States)

    Ables, Brett

    2014-01-01

    Multi-stage launch vehicles with solid rocket motors (SRMs) face design optimization challenges, especially when the mission scope changes frequently. Significant performance benefits can be realized if the solid rocket motors are optimized to the changing requirements. While SRMs represent a fixed performance at launch, rapid design iterations enable flexibility at design time, yielding significant performance gains. The streamlining and integration of SRM design and analysis can be achieved with improved analysis tools. While powerful and versatile, the Solid Performance Program (SPP) is not conducive to rapid design iteration. Performing a design iteration with SPP and a trajectory solver is a labor intensive process. To enable a better workflow, SPP, the Program to Optimize Simulated Trajectories (POST), and the interfaces between them have been improved and automated, and a graphical user interface (GUI) has been developed. The GUI enables real-time visual feedback of grain and nozzle design inputs, enforces parameter dependencies, removes redundancies, and simplifies manipulation of SPP and POST's numerous options. Automating the analysis also simplifies batch analyses and trade studies. Finally, the GUI provides post-processing, visualization, and comparison of results. Wrapping legacy high-fidelity analysis codes with modern software provides the improved interface necessary to enable rapid coupled SRM ballistics and vehicle trajectory analysis. Low cost trade studies demonstrate the sensitivities of flight performance metrics to propulsion characteristics. Incorporating high fidelity analysis from SPP into vehicle design reduces performance margins and improves reliability. By flying an SRM designed with the same assumptions as the rest of the vehicle, accurate comparisons can be made between competing architectures. In summary, this flexible workflow is a critical component to designing a versatile launch vehicle model that can accommodate a volatile

  17. Quark Model in the Quantum Mechanics Curriculum.

    Science.gov (United States)

    Hussar, P. E.; And Others

    1980-01-01

    This article discusses in detail the totally symmetric three-quark karyonic wave functions. The two-body mesonic states are also discussed. A brief review of the experimental efforts to identify the quark model multiplets is given. (Author/SK)

  18. Mathematical Modeling in the High School Curriculum

    Science.gov (United States)

    Hernández, Maria L.; Levy, Rachel; Felton-Koestler, Mathew D.; Zbiek, Rose Mary

    2016-01-01

    In 2015, mathematics leaders and instructors from the Society for Industrial and Applied Mathematics (SIAM) and the Consortium for Mathematics and Its Applications (COMAP), with input from NCTM, came together to write the "Guidelines for Assessment and Instruction in Mathematical Modeling Education" (GAIMME) report as a resource for…

  19. 2D and 3D Modeling Efforts in Fuel Film Cooling of Liquid Rocket Engines (Conference Paper with Briefing Charts)

    Science.gov (United States)

    2017-01-12

    Conference Paper with Briefing Charts 3. DATES COVERED (From - To) 17 November 2016 – 12 January 2017 4. TITLE AND SUBTITLE 2D and 3D Modeling ...98) Prescribed by ANSI Std. 239.18 2D and 3D Modeling Efforts in Fuel Film Cooling of Liquid Rocket Engines Kevin C. Brown∗, Edward B. Coy†, and...wide. As a consequence, the 3D simulations may better model the experimental setup used, but are perhaps not representative of the long circumferential

  20. A multiphasic continuum mechanical model for design investigations of an effusion-cooled rocket thrust chamber

    Energy Technology Data Exchange (ETDEWEB)

    Ghadiani, S.R.

    2005-07-01

    In this thesis, the new concept of the German Aerospace Center (DLR) for an effusion-cooled ceramic rocket combustion chamber is investigated. Using effusion cooling, the porous inner liner of the chamber is cooled by passing the coolant through its pores. The theoretical treatment of the fluid-saturated deformable porous construction under non-isothermal conditions leads to a coupled solid fluid model which is formulated in this thesis within the framework of the Theory of Porous Media (TPM). The multiphasic continuum mechanical model created allows for the definition of mechanical loads, thermal loads as well as a fluid mass flow across the boundary. All necessary constitutive equations are physically expedient conclusions resulting from the evaluation of the determining entropy inequality. The FE-tool PANDAS from the Institute of Mechanics (civil engineering) at University of Stuttgart is used as numerical solver. The numerical simulations discussed in this work are restricted to the qualitative demonstration of the most important physical effects occurring in the construction under study. For a real design study, material parameters have to be determined by experiments which are not the subject of this thesis. Corresponding experiments are being performed in ongoing activities at the DLR. The model presented in this work has to be understood as a general tool for the design investigation of actively cooled porous constructions. (orig.)

  1. Code Validation of CFD Heat Transfer Models for Liquid Rocket Engine Combustion Devices

    National Research Council Canada - National Science Library

    Coy, E. B

    2007-01-01

    .... The design of the rig and its capabilities are described. A second objective of the test rig is to provide CFD validation data under conditions relevant to liquid rocket engine thrust chambers...

  2. The Curriculum Prerequisite Network: Modeling the Curriculum as a Complex System

    Science.gov (United States)

    Aldrich, Preston R.

    2015-01-01

    This article advances the prerequisite network as a means to visualize the hidden structure in an academic curriculum. Networks have been used to represent a variety of complex systems ranging from social systems to biochemical pathways and protein interactions. Here, I treat the academic curriculum as a complex system with nodes representing…

  3. Modeling the Gas Dynamics Environment in a Subscale Solid Rocket Test Motor

    Science.gov (United States)

    Eaton, Andrew M.; Ewing, Mark E.; Bailey, Kirk M.; McCool, Alex (Technical Monitor)

    2001-01-01

    Subscale test motors are often used for the evaluation of solid rocket motor component materials such as internal insulation. These motors are useful for characterizing insulation performance behavior, screening insulation material candidates and obtaining material thermal and ablative property design data. One of the primary challenges associated with using subscale motors however, is the uncertainty involved when extrapolating the results to full-scale motor conditions. These uncertainties are related to differences in such phenomena as turbulent flow behavior and boundary layer development, propellant particle interactions with the wall, insulation off-gas mixing and thermochemical reactions with the bulk flow, radiation levels, material response to the local environment, and other anomalous flow conditions. In addition to the need for better understanding of physical mechanisms, there is also a need to better understand how to best simulate these phenomena using numerical modeling approaches such as computational fluid dynamics (CFD). To better understand and model interactions between major phenomena in a subscale test motor, a numerical study of the internal flow environment of a representative motor was performed. Simulation of the environment included not only gas dynamics, but two-phase flow modeling of entrained alumina particles like those found in an aluminized propellant, and offgassing from wall surfaces similar to an ablating insulation material. This work represents a starting point for establishing the internal environment of a subscale test motor using comprehensive modeling techniques, and lays the groundwork for improving the understanding of the applicability of subscale test data to full-scale motors. It was found that grid resolution, and inclusion of phenomena in addition to gas dynamics, such as two-phase and multi-component gas composition are all important factors that can effect the overall flow field predictions.

  4. The curriculum prerequisite network: Modeling the curriculum as a complex system.

    Science.gov (United States)

    Aldrich, Preston R

    2015-01-01

    This article advances the prerequisite network as a means to visualize the hidden structure in an academic curriculum. Networks have been used to represent a variety of complex systems ranging from social systems to biochemical pathways and protein interactions. Here, I treat the academic curriculum as a complex system with nodes representing courses and links between nodes the course prerequisites as readily obtained from a course catalogue. I show that the catalogue data can be rendered as a directed acyclic graph, which has certain desirable analytical features. Using metrics developed in mathematical graph theory, I characterize the overall structure of the undergraduate curriculum of Benedictine University along with that of its Biochemistry and Molecular Biology program. The latter program is shown to contain hidden community structure that crosses disciplinary boundaries. The overall curriculum is seen as partitioned into numerous isolated course groupings, the size of the groups varying considerably. Individual courses serve different roles in the organization, such as information sources, hubs, and bridges. The curriculum prerequisite network represents the intrinsic, hard-wired constraints on the flow of information in a curriculum, and is the organizational context within which learning occurs. I explore some applications for advising and curriculum reform. © 2015 The International Union of Biochemistry and Molecular Biology.

  5. Controlling Curriculum Redesign with a Process Improvement Model

    Science.gov (United States)

    Drinka, Dennis; Yen, Minnie Yi-Miin

    2008-01-01

    A portion of the curriculum for a Management Information Systems degree was redesigned to enhance the experiential learning of students by focusing it on a three-semester community-based system development project. The entire curriculum was then redesigned to have a project-centric focus with each course in the curriculum contributing to the…

  6. Curriculum as Environments for Learning: A Practicel Meaning and Model.

    Science.gov (United States)

    Sinclair, Robert L.; Ghory, Ward J.

    Effective curriculum development and implementation may be achieved by considering the multidimensional nature of the term "curriculum." A definition of curriculum should be considered in terms of its expressed, implied, and emergent dimensions. The expressed dimension is the written statement of learning objectives, sequence of contents, learning…

  7. EPTS Curriculum Model in the Education of Gifted Students

    Directory of Open Access Journals (Sweden)

    Ugur Sak

    Full Text Available In this article, the author reviews the EPTS Model (Education Programs for Talented Students and discuss how it was developed through multiple stages, the ways it is used to develop programs for gifted students, and then presents research carried out on the effectiveness of this model in the education of gifted students. The EPTS Model has two dimensions: ability and content. The ability dimension has a hierarchical structure composed of three levels of cognitive skills. The content dimension is the extension of the regular curriculum but organized at four levels: data, concept, generalization and theory. Included in the article also is a brief critics of the current state of curricular programs in gifted education.

  8. Modeling the Thermal Rocket Fuel Preparation Processes in the Launch Complex Fueling System

    Directory of Open Access Journals (Sweden)

    A. V. Zolin

    2015-01-01

    Full Text Available It is necessary to carry out fuel temperature preparation for space launch vehicles using hydrocarbon propellant components. A required temperature is reached with cooling or heating hydrocarbon fuel in ground facilities fuel storages. Fuel temperature preparing processes are among the most energy-intensive and lengthy processes that require the optimal technologies and regimes of cooling (heating fuel, which can be defined using the simulation of heat exchange processes for preparing the rocket fuel.The issues of research of different technologies and simulation of cooling processes of rocket fuel with liquid nitrogen are given in [1-10]. Diagrams of temperature preparation of hydrocarbon fuel, mathematical models and characteristics of cooling fuel with its direct contact with liquid nitrogen dispersed are considered, using the numerical solution of a system of heat transfer equations, in publications [3,9].Analytical models, allowing to determine the necessary flow rate and the mass of liquid nitrogen and the cooling (heating time fuel in specific conditions and requirements, are preferred for determining design and operational characteristics of the hydrocarbon fuel cooling system.A mathematical model of the temperature preparation processes is developed. Considered characteristics of these processes are based on the analytical solutions of the equations of heat transfer and allow to define operating parameters of temperature preparation of hydrocarbon fuel in the design and operation of the filling system of launch vehicles.The paper considers a technological system to fill the launch vehicles providing the temperature preparation of hydrocarbon gases at the launch site. In this system cooling the fuel in the storage tank before filling the launch vehicle is provided by hydrocarbon fuel bubbling with liquid nitrogen. Hydrocarbon fuel is heated with a pumping station, which provides fuel circulation through the heat exchanger-heater, with

  9. A model curriculum of health care informatics for Dutch higher professional education.

    Science.gov (United States)

    Aarts, J.

    1995-01-01

    This paper describes the results of a two year project to design a model curriculum of health care informatics for Dutch higher professional education. The core of the curriculum are sixteen modules which cover the broad range of medical informatics and which are closely related to the profiles of the professions involved (nursing, physiotherapy, speech therapy, occupational therapy and dietetics). The curriculum emphasizes the need of using structured data and information to perform tasks in health care delivery and management, for which modern information technology is indispensable. The model curriculum will enable faculty to redesign existing undergraduate programs and to select the contents they see appropriate. In this way we hope that the model curriculum will contribute to an innovative attitude of future graduating health care professionals. A new three year project just has started to develop learning materials using professional health care software based on the sixteen modules of the curriculum. PMID:8563329

  10. A Model for the Development of a CDIO Based Curriculum in Electrical Engineering

    DEFF Research Database (Denmark)

    Bruun, Erik; Kjærgaard, Claus

    2011-01-01

    at the Technical University of Denmark and this gives a strong direct impact of the university environment on the resulting curriculum in electrical engineering. The resulting Bachelor of Engineering curriculum is presented and it is discussed how it complies with the model for curriculum development. The main......This paper deals with a model providing a structured method for engineering curriculum design. The model is developed to show the major influencers on the curriculum design and the relations between the influencers. These influencers are identified as the engineering science, the business...... environment, the university environment, and the teachers and students. Each of them and their influence on the curriculum is described and the sources of information about the influencers are discussed. The CDIO syllabus has been defined as part of the basis for the Bachelor of Engineering programs...

  11. Rocket Flight Path

    Directory of Open Access Journals (Sweden)

    Jamie Waters

    2014-09-01

    Full Text Available This project uses Newton’s Second Law of Motion, Euler’s method, basic physics, and basic calculus to model the flight path of a rocket. From this, one can find the height and velocity at any point from launch to the maximum altitude, or apogee. This can then be compared to the actual values to see if the method of estimation is a plausible. The rocket used for this project is modeled after Bullistic-1 which was launched by the Society of Aeronautics and Rocketry at the University of South Florida.

  12. Modeling of the filling and cooling processes of hot fuel mains in Liquid Fuel Rocket Power Plant (LFRPP)

    Science.gov (United States)

    Prisnyakov, V. F.; Pokrishkin, V. V.; Serebryansky, V. N.

    A mathematical model of heat and mass exchange processes during filling and cooling of hot fuel mains of the Liquid Fuel Rocket Power Plant (LFRPP), which allows to define a mass consumption and distribution of two-phase flow parameters by the length of pipeline. Results of calculations are compared with experimental data, taken during filling of the main with a supply of liquid oxygen from the tank into the combustion chamber. Also, the results of modeling of hydrogen main dynamic characteristics of LFRPP in the same conditions are given.

  13. Arctic Climate Connections Curriculum: A Model for Bringing Authentic Data into the Classroom

    Science.gov (United States)

    Gold, Anne U.; Kirk, Karin; Morrison, Deb; Lynds, Susan; Sullivan, Susan Buhr; Grachev, Andrey; Persson, Ola

    2015-01-01

    Science education can build a bridge between research carried out by scientists and relevant learning opportunities for students. The Broader Impact requirements for scientists by funding agencies facilitate this connection. We propose and test a model curriculum development process in which scientists, curriculum developers, and classroom…

  14. Empirical Test of the Know, See, Plan, Do Model for Curriculum Design in Leadership Education

    Science.gov (United States)

    Martin, Beth Ann; Allen, Scott J.

    2016-01-01

    This research assesses the Know, See, Plan, portions of the Know, See, Plan, Do (KSPD) model for curriculum design in leadership education. There were 3 graduate student groups, each taught using 1 of 3 different curriculum designs (KSPD and 2 control groups). Based on a pretest, post-test design, students' performance was measured to assess their…

  15. A Design Perspective on the School-Work Boundary: A Hybrid Curriculum Model

    Science.gov (United States)

    Zitter, Ilya; Hoeve, Aimée; de Bruijn, Elly

    2016-01-01

    This article proposes a model for the design of a hybrid VET curriculum across the school-work boundary. VET-curricula are designed on the basis of two main types of learning arrangements, namely, the plan for learning in school and for learning at the workplace. A challenge for curriculum development is creating consistency between different…

  16. Interpretive Structural Modeling of MLearning Curriculum Implementation Model of English Language Communication Skills for Undergraduates

    Science.gov (United States)

    Abdullah, Muhammad Ridhuan Tony Lim; Siraj, Saedah; Asra; Hussin, Zaharah

    2014-01-01

    In the field of distance education, learning mediated through mobile technology or mobile learning (mLearning) has rapidly building a repertoire of influence in distance education research. This paper aims to propose an mLearning curriculum implementation model for English Language and Communication skills course among undergraduates using…

  17. One Dimensional Analysis Model of a Condensing Spray Chamber Including Rocket Exhaust Using SINDA/FLUINT and CEA

    Science.gov (United States)

    Sakowski, Barbara; Edwards, Daryl; Dickens, Kevin

    2014-01-01

    Modeling droplet condensation via CFD codes can be very tedious, time consuming, and inaccurate. CFD codes may be tedious and time consuming in terms of using Lagrangian particle tracking approaches or particle sizing bins. Also since many codes ignore conduction through the droplet and or the degradating effect of heat and mass transfer if noncondensible species are present, the solutions may be inaccurate. The modeling of a condensing spray chamber where the significant size of the water droplets and the time and distance these droplets take to fall, can make the effect of droplet conduction a physical factor that needs to be considered in the model. Furthermore the presence of even a relatively small amount of noncondensible has been shown to reduce the amount of condensation [Ref 1]. It is desirable then to create a modeling tool that addresses these issues. The path taken to create such a tool is illustrated. The application of this tool and subsequent results are based on the spray chamber in the Spacecraft Propulsion Research Facility (B2) located at NASA's Plum Brook Station that tested an RL-10 engine. The platform upon which the condensation physics is modeled is SINDAFLUINT. The use of SINDAFLUINT enables the ability to model various aspects of the entire testing facility, including the rocket exhaust duct flow and heat transfer to the exhaust duct wall. The ejector pumping system of the spray chamber is also easily implemented via SINDAFLUINT. The goal is to create a transient one dimensional flow and heat transfer model beginning at the rocket, continuing through the condensing spray chamber, and finally ending with the ejector pumping system. However the model of the condensing spray chamber may be run independently of the rocket and ejector systems detail, with only appropriate mass flow boundary conditions placed at the entrance and exit of the condensing spray chamber model. The model of the condensing spray chamber takes into account droplet

  18. On track for success: an innovative behavioral science curriculum model.

    Science.gov (United States)

    Freedy, John R; Carek, Peter J; Dickerson, Lori M; Mallin, Robert M

    2013-01-01

    This article describes the behavioral science curriculum currently in place at the Trident/MUSC Family Medicine Residency Program. The Trident/MUSC Program is a 10-10-10 community-based, university-affiliated program in Charleston, South Carolina. Over the years, the Trident/MUSC residency program has graduated over 400 Family Medicine physicians. The current behavioral science curriculum consists of both required core elements (didactic lectures, clinical observation, Balint groups, and Resident Grand Rounds) as well as optional elements (longitudinal patient care experiences, elective rotations, behavioral science editorial experience, and scholars project with a behavioral science focus). All Trident/MUSC residents complete core behavioral science curriculum elements and are free to participate in none, some, or all of the optional behavioral science curriculum elements. This flexibility allows resident physicians to tailor the educational program in a manner to meet individual educational needs. The behavioral science curriculum is based upon faculty interpretation of existing "best practice" guidelines (Residency Review Committee-Family Medicine and AAFP). This article provides sufficient curriculum detail to allow the interested reader the opportunity to adapt elements of the behavioral science curriculum to other residency training programs. While this behavioral science track system is currently in an early stage of implementation, the article discusses track advantages as well as future plans to evaluate various aspects of this innovative educational approach.

  19. Designing a Curriculum Model for the Teaching of the Bible in UK Jewish Secondary Schools: A Case Study

    Science.gov (United States)

    Kohn, Eli

    2012-01-01

    This paper describes the process of designing a curriculum model for Bible teaching in UK Jewish secondary schools. This model was designed over the period 2008-2010 by a team of curriculum specialists from the Jewish Curriculum Partnership UK in collaboration with a group of teachers from Jewish secondary schools. The paper first outlines the…

  20. Simple-1: Development stage of the data transmission system for a solid propellant mid-power rocket model

    Science.gov (United States)

    Yarce, Andrés; Sebastián Rodríguez, Juan; Galvez, Julián; Gómez, Alejandro; García, Manuel J.

    2017-06-01

    This paper presents the development stage of a communication module for a solid propellant mid-power rocket model. The communication module was named. Simple-1 and this work considers its design, construction and testing. A rocket model Estes Ventris Series Pro II® was modified to introduce, on the top of the payload, several sensors in a CanSat form factor. The Printed Circuit Board (PCB) was designed and fabricated from Commercial Off The Shelf (COTS) components and assembled in a cylindrical rack structure similar to this small format satellite concept. The sensors data was processed using one Arduino Mini and transmitted using a radio module to a Software Defined Radio (SDR) HackRF based platform on the ground station. The Simple-1 was tested using a drone in successive releases, reaching altitudes from 200 to 300 meters. Different kind of data, in terms of altitude, position, atmospheric pressure and vehicle temperature were successfully measured, making possible the progress to a next stage of launching and analysis.

  1. Toward a model of curriculum analysis and evaluation - Beka: a case study from Australia.

    Science.gov (United States)

    Hall, Catherine E A

    2014-03-01

    All curricula vary in the way that it is constructed, implemented and experienced. Regardless of the context, ongoing evaluation of learning objectives, processes and content within curriculum is critical. Based primarily on the work of Glatthorn (1987), Print (1993) and Reid (2005), this paper describes a case study of an undergraduate nursing curriculum. The analysis described in this paper forms the basis of a process incorporating four key steps: benchmarking, evidencing, knowing and applying (BEKA). By critiquing the literature, and explaining the merge of others' processes and models of curriculum analysis, it is argued that the BEKA framework of curriculum analysis forms a useful and powerful tool enabling understanding of the actual process of teaching, coverage of curriculum content and assessment, and demonstrating linkages between theory and practice. Copyright © 2013 Elsevier Ltd. All rights reserved.

  2. The Collaborative Improvement Model: An Interpretive Study of Revising a Curriculum.

    Science.gov (United States)

    Nosek, Catherine M; Scheckel, Martha M; Waterbury, Theresa; MacDonald, Ann; Wozney, Nancee

    Curriculum revisions in nursing programs are necessary to maintain currency and ensure that nursing students are prepared to competently practice nursing. Yet, the research for curriculum revisions in nursing education is sparse, leaving nursing educators with a thin evidence base upon which to revise curricula. The purpose of this phenomenological and hermeneutical study was to understand the experiences of faculty members and students who used the Collaborative Improvement Model (CIM) at a midwestern nursing department as an approach to revise their curriculum. The findings of this study demonstrate how the CIM (a) promoted student involvement in revising a curriculum, (b) facilitated faculty collaboration across two campuses with different campus cultures, (c) encouraged the Scholarship of Teaching and Learning, and (d) emphasized the need to use external facilitators when revising a curriculum. Faculty members in nursing programs can use this study when considering the CIM as a framework for revising their curricula. Published by Elsevier Inc.

  3. Two-Language, Two-Paradigm Introductory Computing Curriculum Model and its Implementation

    OpenAIRE

    Zanev, Vladimir; Radenski, Atanas

    2011-01-01

    This paper analyzes difficulties with the introduction of object-oriented concepts in introductory computing education and then proposes a two-language, two-paradigm curriculum model that alleviates such difficulties. Our two-language, two-paradigm curriculum model begins with teaching imperative programming using Python programming language, continues with teaching object-oriented computing using Java, and concludes with teaching object-oriented data structures with Java.

  4. Flow Formulation-based Model for the Curriculum-based Course Timetabling Problem

    DEFF Research Database (Denmark)

    Bagger, Niels-Christian Fink; Kristiansen, Simon; Sørensen, Matias

    2015-01-01

    In this work we will present a new mixed integer programming formulation for the curriculum-based course timetabling problem. We show that the model contains an underlying network model by dividing the problem into two models and then connecting the two models back into one model using a maximum ow...

  5. A Model Curriculum for Tobacco Use Cessation and Prevention Intervention.

    Science.gov (United States)

    Geboy, Michael J.; Fried, Jacquelyn L.

    1994-01-01

    Proposes a curriculum for dental/dental hygiene schools that would teach oral health care providers how to routinely assess tobacco use, advise cessation, and provide assistance and follow-up for tobacco-using patients. The article emphasizes the importance of making tobacco interventions routine components of schools' clinical teaching programs.…

  6. PLA-Based Curriculum: Humanistic Model of Higher Education

    Science.gov (United States)

    Popova-Gonci, Viktoria; Tobol, Amy Ruth

    2011-01-01

    The authors believe that there is no inherent academic validity or lack of thereof in the notion of prior learning assessment (PLA)-based curriculum. If mishandled, it can become the tool for carrying out diploma mill practices. Conversely, if implemented and facilitated appropriately, PLA-based curricula can offer humanistic educational values…

  7. A model marine-science curriculum for fourth-grade pupils in Florida

    Science.gov (United States)

    Schulte, Philip James

    This dissertation focused on the development of a model marine-science curriculum for fourth-grade pupils in the State of Florida. The curriculum was developed using grounded theory research method, including a component of data collected from an on-line survey administered to 106 professional educators and marine biologists. The results of the data collection and analysis showed a definitive necessity for teacher preparedness, multidisciplinary content, and inquiry-based science instruction. Further, three important factors emerged: (a) collaborative grouping increases achievement; (b) field excursions significantly impact student motivation; (c) standardized testing influences curriculum development. The curriculum is organized as an 11-day unit, with detailed lesson plans presented in standard curricular format and with all components correlated to the Florida State Educational Standards. The curriculum incorporates teacher preparation, multimedia presentations, computer-assisted instruction, scientific art appreciation, and replication as well as assessment factors. The curriculum addresses topics of ichthyology, marine animal identification, environmental conservation and protection, marine animal anatomy, water safety, environmental stewardship, and responsible angling techniques. The components of the curriculum were discussed with reference to the literature on which it was based and recommendations for future research were addressed.

  8. Modelling of the canopy photosynthesis in intercropping with lettuce, rocket, radish, coriander and red beet

    Directory of Open Access Journals (Sweden)

    Laíza Gomes de Paiva

    2016-11-01

    Full Text Available In the past years, many combinations of plants in intercropping have been demonstrating agronomic viability due to the increase of production per unity of area and greater use of natural resources. However, the knowledge and the proper choice of crops that will be part of the system are necessary to reach achievement, so that there is mutual interaction between them. The study had the purpose of evaluate the productivity of lettuce (Elba intercropped with coriander (Verdão, rocket (Cultivada, beet (Early Wonder or radish (Crimson Gigante. The experiment was conducted in the experimental area of the CCTA/UFCG, Pombal/PB, from September 2013 to July 2014. Nine treatments were assessed (4 intercropping and 5 monocultures, installed in randomized blocks with four replications. The amalgamation of lettuce with crops of coriander, rocket, radish or beet did not affected negatively its profitability. The intercropping of lettuce and beet presented the greater productive efficiency and efficient use of land, demonstrated by the increased production of both crops in this association. Modelagem do dossel fotossintético em sistemas consorciados com alface, rúcula, rabanete, coentro e beterrabaResumo: Nos últimos anos muitas combinações de plantas em cultivo consorciado têm demonstrado viabilidade agronômica devido ao aumento de produção por unidade de área e maior aproveitamento de recursos naturais, no entanto, para que esse sistema alcance sucesso é necessário a escolha adequada das culturas que irão fazer parte do mesmo, de maneira que haja interação mútua entre elas. Com o objetivo de avaliar a produtividade da cultura da alface (‘Elba’ em consórcio com coentro (‘Verdão’, rúcula (‘Cultivada’, rabanete (‘Crimson Gigante’, or beterraba (‘Early Wonder’ foi realizado o experimento na área experimental do CCTA/UFCG, em Pombal, PB, no período de setembro de 2013 a julho de 2014. Foram avaliados 9 tratamentos (4

  9. Modeling and Testing of Non-Nuclear, Highpower Simulated Nuclear Thermal Rocket Reactor Elements

    Science.gov (United States)

    Kirk, Daniel R.

    2005-01-01

    When the President offered his new vision for space exploration in January of 2004, he said, "Our third goal is to return to the moon by 2020, as the launching point for missions beyond," and, "With the experience and knowledge gained on the moon, we will then be ready to take the next steps of space exploration: human missions to Mars and to worlds beyond." A human mission to Mars implies the need to move large payloads as rapidly as possible, in an efficient and cost-effective manner. Furthermore, with the scientific advancements possible with Project Prometheus and its Jupiter Icy Moons Orbiter (JIMO), (these use electric propulsion), there is a renewed interest in deep space exploration propulsion systems. According to many mission analyses, nuclear thermal propulsion (NTP), with its relatively high thrust and high specific impulse, is a serious candidate for such missions. Nuclear rockets utilize fission energy to heat a reactor core to very high temperatures. Hydrogen gas flowing through the core then becomes superheated and exits the engine at very high exhaust velocities. The combination of temperature and low molecular weight results in an engine with specific impulses above 900 seconds. This is almost twice the performance of the LOX/LH2 space shuttle engines, and the impact of this performance would be to reduce the trip time of a manned Mars mission from the 2.5 years, possible with chemical engines, to about 12-14 months.

  10. Modeling of Uneven Flow and Electromagnetic Field Parameters in the Combustion Chamber of Liquid Rocket Engine with a Near-wall Layer Available

    Directory of Open Access Journals (Sweden)

    A. V. Rudinskii

    2015-01-01

    Full Text Available The paper concerns modeling of an uneven flow and electromagnetic field parameters in the combustion chamber of the liquid rocket engine with a near-wall layer available.The research objective was to evaluate quantitatively influence of changing model chamber mode of the liquid rocket engine on the electro-physical characteristics of the hydrocarbon fuel combustion by-products.The main method of research was based on development of a final element model of the flowing path of the rocket engine chamber and its adaptation to the boundary conditions.The paper presents a developed two-dimensional non-stationary mathematical model of electro-physical processes in the liquid rocket engine chamber using hydrocarbon fuel. The model takes into consideration the features of a gas-dynamic contour of the engine chamber and property of thermo-gas-dynamic characteristics of the ionized products of combustion of hydrocarbonic fuel. Distributions of magnetic field intensity and electric conductivity received and analyzed taking into account a low-temperature near-wall layer. Special attention is paid to comparison of obtained calculation values of the electric current, which is taken out from intrachamber space of the engine with earlier published data of other authors.

  11. Models of Non-Stationary Thermodynamic Processes in Rocket Engines Taking into Account a Chemical Equilibrium of Combustion Products

    Directory of Open Access Journals (Sweden)

    A. V. Aliev

    2015-01-01

    Full Text Available The paper considers the two approach-based techniques for calculating the non-stationary intra-chamber processes in solid-propellant rocket engine (SPRE. The first approach assumes that the combustion products are a mechanical mix while the other one supposes it to be the mix, which is in chemical equilibrium. To enhance reliability of solution of the intra ballistic tasks, which assume a chemical equilibrium of combustion products, the computing algorithms to calculate a structure of the combustion products are changed. The algorithm for solving a system of the nonlinear equations of chemical equilibrium, when determining the iterative amendments, uses the orthogonal QR method instead of a method of Gauss. Besides, a possibility to apply genetic algorithms in a task about a structure of combustion products is considered.It is shown that in the tasks concerning the prediction of non-stationary intra ballistic characteristics in a solid propellant rocket engine, application of models of mechanical mix and chemically equilibrium structure of combustion products leads to qualitatively and quantitatively coinciding results. The maximum difference in parameters is 5-10%, at most. In tasks concerning the starting operation of a solid sustainer engine with high-temperature products of combustion difference in results is more essential, and can reach 20% and more.A technique to calculate the intra ballistic parameters, in which flotation of combustion products is considered in the light of a spatial statement, requires using the high-performance computer facilities. For these tasks it is offered to define structure of products of combustion and its thermo-physical characteristics, using the polynoms coefficients of which should be predefined.

  12. Backyard rockets learn to make and launch rockets, missiles, cannons, and other projectiles

    CERN Document Server

    com, Instructables; Warren, Mike

    2014-01-01

    Originating from Instructables, a popular project-based community made up of all sorts of characters with wacky hobbies and a desire to pass on their wisdom to others, Backyard Rockets is made up of projects from a medley of authors who have collected and shared a treasure trove of rocket-launching plans and the knowledge to make their projects soar! Backyard Rockets gives step-by-step instructions, with pictures to guide the way, on how to launch your very own project into the sky. All of these authors have labored over their endeavors to pass their knowledge on and make it easier for others to attempt. Discover how to create the following projects: Teeny, Tiny Rocket Engine Ultimate Straw Rocket Rocket Eggstronaut Pocket Rocket Launcher Iron Man Model Rocket Model Rocket with Camera Rocket-Powered Matchbox Cars – Extreme And much more! The Instructables community has provided a compendium of rocket savvy from innovators who have paved the way for other curious minds. In addition to rockets, fireworks, and ...

  13. International Curriculums.

    Science.gov (United States)

    Neal, Larry L.

    This workshop presentation on international curriculums in the field of parks, recreation, leisure, cultural services, and travel/tourism comments that the literature is replete with articles addressing what the field is about, but not about curriculum issues, models, and structure. It reports an international survey of 12 college educators…

  14. Modeling of Rocket Fuel Heating and Cooling Processes in the Interior Receptacle Space of Ground-Based Systems

    Directory of Open Access Journals (Sweden)

    K. I. Denisova

    2016-01-01

    Full Text Available The propellant to fill the fuel tanks of the spacecraft, upper stages, and space rockets on technical and ground-based launch sites before fueling should be prepared to ensure many of its parameters, including temperature, in appropriate condition. Preparation of fuel temperature is arranged through heating and cooling the rocket propellants (RP in the tanks of fueling equipment. Processes of RP temperature preparation are the most energy-intensive and timeconsuming ones, which require that a choice of sustainable technologies and modes of cooling (heating RP provided by the ground-based equipment has been made through modeling of the RP [1] temperature preparation processes at the stage of design and operation of the groundbased fueling equipment.The RP temperature preparation in the tanks of the ground-based systems can be provided through the heat-exchangers built-in the internal space and being external with respect to the tank in which antifreeze, air or liquid nitrogen may be used as the heat transfer media. The papers [1-12], which note a promising use of the liquid nitrogen to cool PR, present schematic diagrams and modeling systems for the RP temperature preparation in the fueling equipment of the ground-based systems.We consider the RP temperature preparation using heat exchangers to be placed directly in RP tanks. Feeding the liquid nitrogen into heat exchanger with the antifreeze provides the cooling mode of PR while a heated air fed there does that of heating. The paper gives the systems of equations and results of modeling the processes of RP temperature preparation, and its estimated efficiency.The systems of equations of cooling and heating RP are derived on the assumption that the heat exchange between the fuel and the antifreeze, as well as between the storage tank and the environment is quasi-stationary.The paper presents calculation results of the fuel temperature in the tank, and coolant temperature in the heat exchanger, as

  15. The Effects of a Model-Based Physics Curriculum Program with a Physics First Approach: A Causal-Comparative Study

    Science.gov (United States)

    Liang, Ling L.; Fulmer, Gavin W.; Majerich, David M.; Clevenstine, Richard; Howanski, Raymond

    2012-01-01

    The purpose of this study is to examine the effects of a model-based introductory physics curriculum on conceptual learning in a Physics First (PF) Initiative. This is the first comparative study in physics education that applies the Rasch modeling approach to examine the effects of a model-based curriculum program combined with PF in the United…

  16. An Evaluation of High School Curricula Employing Using the Element-Based Curriculum Development Model

    Science.gov (United States)

    Aslan, Dolgun; Günay, Rafet

    2016-01-01

    This study was conducted with the aim of evaluating the curricula that constitute the basis of education provision at high schools in Turkey from the perspective of the teachers involved. A descriptive survey model, a quantitative research method was employed in this study. An item-based curriculum evaluation model was employed as part of the…

  17. Unified Program Design: Organizing Existing Programming Models, Delivery Options, and Curriculum

    Science.gov (United States)

    Rubenstein, Lisa DaVia; Ridgley, Lisa M.

    2017-01-01

    A persistent problem in the field of gifted education has been the lack of categorization and delineation of gifted programming options. To address this issue, we propose Unified Program Design as a structural framework for gifted program models. This framework defines gifted programs as the combination of delivery methods and curriculum models.…

  18. Developing a Model for an Innovative Culinary Competency Curriculum and Examining Its Effects on Students' Performance

    Science.gov (United States)

    Hu, Meng-Lei I-Chen Monica; Horng, Jeou-Shyan; Teng, Chih-Ching

    2016-01-01

    The present study designs and develops an innovative culinary competency curriculum (ICCC) model comprising seven sections: innovative culture, aesthetics, techniques, service, product, management, and creativity. The model is formulated based on culinary concept, creativity, innovation, and competency theory. The four elements of curriculum…

  19. Preparedness for clinical: evaluation of the core elements of the Clinical Immersion curriculum model.

    Science.gov (United States)

    Diefenbeck, Cynthia; Herrman, Judith; Wade, Gail; Hayes, Evelyn; Voelmeck, Wayne; Cowperthwait, Amy; Norris, Susan

    2015-01-01

    The Clinical Immersion Model is an innovative baccalaureate nursing curriculum that has demonstrated successful outcomes over the past 10 years. For those intending to adopt the model, individual components in isolation may prove ineffective. This article describes three core components of the curriculum that form the foundation of preparation for the senior-year clinical immersion. Detailed student-centered outcomes evaluation of these critical components is shared. Results of a mixed-methods evaluation, including surveys and focus groups, are presented. Implications of this curricular evaluation and future directions are explored. Copyright © 2015 Elsevier Inc. All rights reserved.

  20. Development and Validation of a Computational Model for Predicting the Behavior of Plumes from Large Solid Rocket Motors

    Science.gov (United States)

    Wells, Jason E.; Black, David L.; Taylor, Casey L.

    2013-01-01

    Exhaust plumes from large solid rocket motors fired at ATK's Promontory test site carry particulates to high altitudes and typically produce deposits that fall on regions downwind of the test area. As populations and communities near the test facility grow, ATK has become increasingly concerned about the impact of motor testing on those surrounding communities. To assess the potential impact of motor testing on the community and to identify feasible mitigation strategies, it is essential to have a tool capable of predicting plume behavior downrange of the test stand. A software package, called PlumeTracker, has been developed and validated at ATK for this purpose. The code is a point model that offers a time-dependent, physics-based description of plume transport and precipitation. The code can utilize either measured or forecasted weather data to generate plume predictions. Next-Generation Radar (NEXRAD) data and field observations from twenty-three historical motor test fires at Promontory were collected to test the predictive capability of PlumeTracker. Model predictions for plume trajectories and deposition fields were found to correlate well with the collected dataset.

  1. Development of Plasma Fluid Model for a Microwave Rocket Supported by a Magnetic Field

    Science.gov (United States)

    Takahashi, Masayuki

    2017-10-01

    A uid model of plasma transport is developed to reproduce a plasma pattern induced by microwave irradiation when an external magnetic field is applied to the breakdown volume. Transport coefficients in the uid model are evaluated using a fully kinetic simulation under a magnetic field to maintain consistency of electron transport between the particle and uid models. The electron-density profile and propagation speed of the ionization front obtained by the uid model agree with those of the particle model. Multidimensional or longer time-scale simulations can be conducted using the uid model in the case of the application of an external magnetic field, with the simulation reducing computational cost compared to the fully kinetic model.

  2. A proposed model curriculum in global child health for pediatric residents.

    Science.gov (United States)

    Suchdev, Parminder S; Shah, Ankoor; Derby, Kiersten S; Hall, Lauren; Schubert, Chuck; Pak-Gorstein, Suzinne; Howard, Cindy; Wagner, Sabrina; Anspacher, Melanie; Staton, Donna; O'Callahan, Cliff; Herran, Marisa; Arnold, Linda; Stewart, Christopher C; Kamat, Deepak; Batra, Maneesh; Gutman, Julie

    2012-01-01

    In response to the increasing engagement in global health (GH) among pediatric residents and faculty, academic GH training opportunities are growing rapidly in scale and number. However, consensus to guide residency programs regarding best practice guidelines or model curricula has not been established. We aimed to highlight critical components of well-established GH tracks and develop a model curriculum in GH for pediatric residency programs. We identified 43 existing formal GH curricula offered by U.S. pediatric residency programs in April 2011 and selected 8 programs with GH tracks on the basis of our inclusion criteria. A working group composed of the directors of these GH tracks, medical educators, and trainees and faculty with GH experience collaborated to develop a consensus model curriculum, which included GH core topics, learning modalities, and approaches to evaluation within the framework of the competencies for residency education outlined by the Accreditation Council for Graduate Medical Education. Common curricular components among the identified GH tracks included didactics in various topics of global child health, domestic and international field experiences, completion of a scholarly project, and mentorship. The proposed model curriculum identifies strengths of established pediatric GH tracks and uses competency-based learning objectives. This proposed pediatric GH curriculum based on lessons learned by directors of established GH residency tracks will support residency programs in creating and sustaining successful programs in GH education. The curriculum can be adapted to fit the needs of various programs, depending on their resources and focus areas. Evaluation outcomes need to be standardized so that the impact of this curriculum can be effectively measured. Copyright © 2012 Academic Pediatric Association. Published by Elsevier Inc. All rights reserved.

  3. An Experimental Study on Effectiveness of Integrated Curriculum Model (ICM) in Social Studies Education for Gifted and Talented Learners

    Science.gov (United States)

    Atalay, Özlem; Kahveci, Nihat Gürel

    2015-01-01

    This experimental study examines the effects of Integrated Curriculum Model (ICM) on 4th grade elementary gifted and talented students' academic achievement, creativity and critical thinking (Control Group N= 10, Experimental Group N= 11) in the social studies classroom context, in Istanbul, Turkey. Integrated Curriculum Model was utilized to…

  4. Assessment of exposure-response functions for rocket-emission toxicants

    National Research Council Canada - National Science Library

    National Research Council Staff; Commission on Life Sciences; Division on Earth and Life Studies; National Research Council; National Academy of Sciences

    ... aborted launch that results in a rocket being destroyed near the ground. Assessment of Exposure-Response Functions for Rocket-Emmission Toxicants evaluates the model and the data used for three rocket emission toxicants...

  5. A Model Longitudinal Observation Medicine Curriculum for an Emergency Medicine Residency.

    Science.gov (United States)

    Wheatley, Matthew; Baugh, Christopher; Osborne, Anwar; Clark, Carol; Shayne, Philip; Ross, Michael

    2016-04-01

    The role of observation services for emergency department patients has increased in recent years. Driven by changing health care practices and evolving payer policies, many hospitals in the United States currently have or are developing an observation unit (OU) and emergency physicians are most often expected to manage patients in this setting. Yet, few residency programs dedicate a portion of their clinical curriculum to observation medicine. This knowledge set should be integrated into the core training curriculum of emergency physicians. Presented here is a model observation medicine longitudinal training curriculum, which can be integrated into an emergency medicine (EM) residency. It was developed by a consensus of content experts representing the observation medicine interest group and observation medicine section, respectively, from EM's two major specialty societies: the Society for Academic Emergency Medicine (SAEM) and the American College of Emergency Physicians (ACEP). The curriculum consists of didactic, clinical, and self-directed elements. It is longitudinal, with learning objectives for each year of training, focusing initially on the basic principles of observation medicine and appropriate observation patient selection; moving to the management of various observation appropriate conditions; and then incorporating further concepts of OU management, billing, and administration. This curriculum is flexible and designed to be used in both academic and community EM training programs within the United States. Additionally, scholarly opportunities, such as elective rotations and fellowship training, are explored. © 2016 by the Society for Academic Emergency Medicine.

  6. Modeling the effects of dissolved helium pressurant on a liquid hydrogen rocket propellant tank

    Science.gov (United States)

    Richardson, I. A.; Leachman, J. W.

    2017-12-01

    A model was developed using NASA’s Generalized Fluid System Simulation Program (GFSSP) for the self-pressurization of a liquid hydrogen propellant tank due to boil-off to determine the significance of mixture non-idealities. The GFSSP model compared the tank performance for the traditional model that assumes no helium pressurant dissolves into the liquid hydrogen propellant to an updated model that accounts for dissolved helium pressurant. Traditional NASA models have been unable to account for this dissolved helium due to a lack of fundamental property information. Recent measurements of parahydrogen-helium mixtures enabled the development of the first multi-phase Equation Of State (EOS) for parahydrogen-helium mixtures. The self-pressurization GFSSP model was run assuming that the liquid propellant was pure liquid hydrogen and assuming helium dissolved into the liquid utilizing the new helium-hydrogen EOS. The analysis shows that having dissolved helium in the propellant does not have a significant effect on the tank pressurization rate for typical tank conditions (-423 °F and 30 psia).

  7. Curriculum-Integrated Information Literacy (CIIL) in a Community College Nursing Program: A Practical Model

    Science.gov (United States)

    Argüelles, Carlos

    2016-01-01

    This article describes a strategy to integrate information literacy into the curriculum of a nursing program in a community college. The model is articulated in four explained phases: preparatory, planning, implementation, and evaluation. It describes a collaborative process encouraging librarians to work with nursing faculty, driving students to…

  8. The "Unknown" Greek Paleoenvironment: Curriculum Proposals through an Infusion Model for Elementary School, Using Ammonite Fossils

    Science.gov (United States)

    Fragouli, Stiliani; Rokka, Aggeliki

    2017-01-01

    In this study we introduce an infusion model to "inject" ammonites and ammonite fossils in current subjects of Greek primary curriculum. Paleontology and mainly fossils attract more and more elementary students and teachers, yet in Greece this trend is solely about dinosaurs, despite the fact that the most common Greek fossils are not…

  9. A Sustainable Model for Integrating Current Topics in Machine Learning Research into the Undergraduate Curriculum

    Science.gov (United States)

    Georgiopoulos, M.; DeMara, R. F.; Gonzalez, A. J.; Wu, A. S.; Mollaghasemi, M.; Gelenbe, E.; Kysilka, M.; Secretan, J.; Sharma, C. A.; Alnsour, A. J.

    2009-01-01

    This paper presents an integrated research and teaching model that has resulted from an NSF-funded effort to introduce results of current Machine Learning research into the engineering and computer science curriculum at the University of Central Florida (UCF). While in-depth exposure to current topics in Machine Learning has traditionally occurred…

  10. Open Learning and Formal Credentialing in Higher Education: Curriculum Models and Institutional Policies

    Science.gov (United States)

    Reushle, Shirley, Ed.; Antonio, Amy, Ed.; Keppell, Mike, Ed.

    2016-01-01

    The discipline of education is a multi-faceted system that must constantly integrate new strategies and procedures to ensure successful learning experiences. Enhancements in education provide learners with greater opportunities for growth and advancement. "Open Learning and Formal Credentialing in Higher Education: Curriculum Models and…

  11. Model Curriculum And Trainer's Guide for Programs to Combat White-Collar Crime.

    Science.gov (United States)

    Karchmer, Clifford L.

    This model curriculum is addressed to the training needs of personnel working in general white-collar crime assignments located in state and local police or prosecutors' offices. It is designed intentionally to orient personnel to the requirements of building a case as it moves along the enforcement process. Materials on trainer use and…

  12. Leading a New Pedagogical Approach to Australian Curriculum Mathematics: Using the Dual Mathematical Modelling Cycle Framework

    Science.gov (United States)

    Lamb, Janeen; Kawakami, Takashi; Saeki, Akihiko; Matsuzaki, Akio

    2014-01-01

    The aim of this study was to investigate the use of the "dual mathematical modelling cycle framework" as one way to meet the espoused goals of the Australian Curriculum Mathematics. This study involved 23 Year 6 students from one Australian primary school who engaged in an "Oil Tank Task" that required them to develop two…

  13. Towards an Epistemically Neutral Curriculum Model for Vocational Education: From Competencies to Threshold Concepts and Practices

    Science.gov (United States)

    Hodge, Steven; Atkins, Liz; Simons, Michele

    2016-01-01

    Debate about the benefits and problems with competency-based training (CBT) has not paid sufficient attention to the fact that the model satisfies a unique, contemporary demand for cross-occupational curriculum. The adoption of CBT in the UK and Australia, along with at least some of its problems, can be understood in terms of this demand. We…

  14. Vaporization and Zonal Mixing in Performance Modeling of Advanced LOX-Methane Rockets

    Science.gov (United States)

    Williams, George J., Jr.; Stiegemeier, Benjamin R.

    2013-01-01

    Initial modeling of LOX-Methane reaction control (RCE) 100 lbf thrusters and larger, 5500 lbf thrusters with the TDK/VIPER code has shown good agreement with sea-level and altitude test data. However, the vaporization and zonal mixing upstream of the compressible flow stage of the models leveraged empirical trends to match the sea-level data. This was necessary in part because the codes are designed primarily to handle the compressible part of the flow (i.e. contraction through expansion) and in part because there was limited data on the thrusters themselves on which to base a rigorous model. A more rigorous model has been developed which includes detailed vaporization trends based on element type and geometry, radial variations in mixture ratio within each of the "zones" associated with elements and not just between zones of different element types, and, to the extent possible, updated kinetic rates. The Spray Combustion Analysis Program (SCAP) was leveraged to support assumptions in the vaporization trends. Data of both thrusters is revisited and the model maintains a good predictive capability while addressing some of the major limitations of the previous version.

  15. A Flight Dynamics Model for a Multi-Actuated Flexible Rocket Vehicle

    Science.gov (United States)

    Orr, Jeb S.

    2011-01-01

    A comprehensive set of motion equations for a multi-actuated flight vehicle is presented. The dynamics are derived from a vector approach that generalizes the classical linear perturbation equations for flexible launch vehicles into a coupled three-dimensional model. The effects of nozzle and aerosurface inertial coupling, sloshing propellant, and elasticity are incorporated without restrictions on the position, orientation, or number of model elements. The present formulation is well suited to matrix implementation for large-scale linear stability and sensitivity analysis and is also shown to be extensible to nonlinear time-domain simulation through the application of a special form of Lagrange s equations in quasi-coordinates. The model is validated through frequency-domain response comparison with a high-fidelity planar implementation.

  16. Development of Erosive Burning Models for CFD Predictions of Solid Rocket Motor Internal Environments

    Science.gov (United States)

    Wang, Qun-Zhen

    2003-01-01

    Four erosive burning models, equations (11) to (14). are developed in this work by using a power law relationship to correlate (1) the erosive burning ratio and the local velocity gradient at propellant surfaces; (2) the erosive burning ratio and the velocity gradient divided by centerline velocity; (3) the erosive burning difference and the local velocity gradient at propellant surfaces; and (4) the erosive burning difference and the velocity gradient divided by centerline velocity. These models depend on the local velocity gradient at the propellant surface (or the velocity gradient divided by centerline velocity) only and, unlike other empirical models, are independent of the motor size. It was argued that, since the erosive burning is a local phenomenon occurring near the surface of the solid propellant, the erosive burning ratio should be independent of the bore diameter if it is correlated with some local flow parameters such as the velocity gradient at the propellant surface. This seems to be true considering the good results obtained by applying these models, which are developed from the small size 5 inch CP tandem motor testing, to CFD simulations of much bigger motors.

  17. Rockets two classic papers

    CERN Document Server

    Goddard, Robert

    2002-01-01

    Rockets, in the primitive form of fireworks, have existed since the Chinese invented them around the thirteenth century. But it was the work of American Robert Hutchings Goddard (1882-1945) and his development of liquid-fueled rockets that first produced a controlled rocket flight. Fascinated by rocketry since boyhood, Goddard designed, built, and launched the world's first liquid-fueled rocket in 1926. Ridiculed by the press for suggesting that rockets could be flown to the moon, he continued his experiments, supported partly by the Smithsonian Institution and defended by Charles Lindbergh. T

  18. Evaluation of an integrative model for professional development and research in a dental curriculum.

    Science.gov (United States)

    Ditmyer, Marcia M; Mobley, Connie C; Davenport, William D

    2014-03-01

    The purpose of this project was to evaluate a Research, Professional Development, and Critical Thinking Integrative Model developed for use in a dental curriculum. This article outlines strategies used in developing a competency-based pedagogical model designed to provide a tailored student learning environment with objective, measurable, and calibrated assessment outcomes. The theoretical model integrated elements of critical thinking, professionalism, and evidence-based dentistry across dental school disciplines; implementation was based on consensus of dental faculty and student representatives about course content, faculty allocation, and curriculum alignment. Changes introduced included the following: 1) conversion and integration of previously siloed course content taught in Years 1 and 2 to sequential two-year combined courses; 2) reduction of course and content redundancies; 3) delivery of courses by teams of faculty members in biomedical, behavioral, and clinical sciences; and 4) reduction of total curriculum credit/contact hours from 13.5 (201 contact hours) to 5.0 (60 contact hours), allowing the Curriculum Committee to accommodate additional courses. These changes resulted in improvement in student satisfaction.

  19. Modeling of Heat Transfer and Ablation of Refractory Material Due to Rocket Plume Impingement

    Science.gov (United States)

    Harris, Michael F.; Vu, Bruce T.

    2012-01-01

    CR Tech's Thermal Desktop-SINDA/FLUINT software was used in the thermal analysis of a flame deflector design for Launch Complex 39B at Kennedy Space Center, Florida. The analysis of the flame deflector takes into account heat transfer due to plume impingement from expected vehicles to be launched at KSC. The heat flux from the plume was computed using computational fluid dynamics provided by Ames Research Center in Moffet Field, California. The results from the CFD solutions were mapped onto a 3-D Thermal Desktop model of the flame deflector using the boundary condition mapping capabilities in Thermal Desktop. The ablation subroutine in SINDA/FLUINT was then used to model the ablation of the refractory material.

  20. Burn-Rate Modeling and Combustion Diagnostics for Environmentally Friendly, Solid Rocket Propellants

    Science.gov (United States)

    2006-11-01

    and Anderson, 2004, Sausa, Venizelos, and Cabalo , 2006, Venizelos and Sausa, 1998, and Venizelos and Sausa, 2000). Briefly, the burn rates of NC...H2/N2O flame. This decrease agrees well with the observed OH decrease of ~45% (Sausa, Venizelos, and Cabalo , 2006). OH rate analysis for the H2...R., Venizelos, D., and Cabalo , J., 2006: Mass Spectrometric, Laser-Induced Fluorescence, and Chemical Kinetic Modeling

  1. A Study of EFL Curriculum of China's Science and Technology Institutes under Graded Teaching Model

    Science.gov (United States)

    He, Chunyan; Han, Fei

    2018-01-01

    Recent years, most universities and colleges have been reforming the English as a foreign language (EFL) curriculum system in China. Some reformed EFL curriculum into English for Specific Purposes (ESP) courses, for instance, while some conducted a graded teaching model in EFL teaching. However, the effect of this reform was not so good,…

  2. Implementing the Standards: Incorporating Mathematical Modeling into the Curriculum.

    Science.gov (United States)

    Swetz, Frank

    1991-01-01

    Following a brief historical review of the mechanism of mathematical modeling, examples are included that associate a mathematical model with given data (changes in sea level) and that model a real-life situation (process of parallel parking). Also provided is the rationale for the curricular implementation of mathematical modeling. (JJK)

  3. Special Curriculum Issue.

    Science.gov (United States)

    O'Connor, Bridget N.; And Others

    1996-01-01

    Includes "Foreword" (O'Connor, Fidoten); "Organizational and End-User Information Systems (OEIS)" (Regan); "Curriculum Development" (Bronner); "OEIS Model Curriculum" (O'Connor); "OEIS Model Curriculum: A Template for Implementation" (Moses, Rehwaldt); "Status of Model Curricula Development" (Caouette, Lutz); "Training in Industry and Education"…

  4. Acoustic Measurements for Small Solid Rocket Motors

    Science.gov (United States)

    Vargas, Magda B.; Kenny, R. Jeremy

    2010-01-01

    Models have been developed to predict large solid rocket motor acoustic loads based on the scaling of small solid rocket motors. MSFC has measured several small solid rocket motors in horizontal and launch configurations to anchor these models. Solid Rocket Test Motor (SRTM) has ballistics similar to the Reusable Solid Rocket Motor (RSRM) therefore a good choice for acoustic scaling. Acoustic measurements were collected during the test firing of the Insulation Configuration Extended Length (ICXL) 7,6, and 8 (in firing order) in order to compare to RSRM horizontal firing data. The scope of this presentation includes: Acoustic test procedures and instrumentation implemented during the three SRTM firings and Data analysis method and general trends observed in the data.

  5. Aerodynamics and flow characterisation of multistage rockets

    Science.gov (United States)

    Srinivas, G.; Prakash, M. V. S.

    2017-05-01

    The main objective of this paper is to conduct a systematic flow analysis on single, double and multistage rockets using ANSYS software. Today non-air breathing propulsion is increasing dramatically for the enhancement of space exploration. The rocket propulsion is playing vital role in carrying the payload to the destination. Day to day rocket aerodynamic performance and flow characterization analysis has becoming challenging task to the researchers. Taking this task as motivation a systematic literature is conducted to achieve better aerodynamic and flow characterization on various rocket models. The analyses on rocket models are very little especially in numerical side and experimental area. Each rocket stage analysis conducted for different Mach numbers and having different flow varying angle of attacks for finding the critical efficiency performance parameters like pressure, density and velocity. After successful completion of the analysis the research reveals that flow around the rocket body for Mach number 4 and 5 best suitable for designed payload. Another major objective of this paper is to bring best aerodynamics flow characterizations in both aero and mechanical features. This paper also brings feature prospectus of rocket stage technology in the field of aerodynamic design.

  6. Improving education in primary care: development of an online curriculum using the blended learning model

    Directory of Open Access Journals (Sweden)

    Lewin Linda

    2009-06-01

    Full Text Available Abstract Background Standardizing the experiences of medical students in a community preceptorship where clinical sites vary by geography and discipline can be challenging. Computer-assisted learning is prevalent in medical education and can help standardize experiences, but often is not used to its fullest advantage. A blended learning curriculum combining web-based modules with face-to-face learning can ensure students obtain core curricular principles. Methods This course was developed and used at The Case Western Reserve University School of Medicine and its associated preceptorship sites in the greater Cleveland area. Leaders of a two-year elective continuity experience at the Case Western Reserve School of Medicine used adult learning principles to develop four interactive online modules presenting basics of office practice, difficult patient interviews, common primary care diagnoses, and disease prevention. They can be viewed at http://casemed.case.edu/cpcp/curriculum. Students completed surveys rating the content and technical performance of each module and completed a Generalist OSCE exam at the end of the course. Results Participating students rated all aspects of the course highly; particularly those related to charting and direct patient care. Additionally, they scored very well on the Generalist OSCE exam. Conclusion Students found the web-based modules to be valuable and to enhance their clinical learning. The blended learning model is a useful tool in designing web-based curriculum for enhancing the clinical curriculum of medical students.

  7. Improving education in primary care: development of an online curriculum using the blended learning model.

    Science.gov (United States)

    Lewin, Linda Orkin; Singh, Mamta; Bateman, Betzi L; Glover, Pamela Bligh

    2009-06-10

    Standardizing the experiences of medical students in a community preceptorship where clinical sites vary by geography and discipline can be challenging. Computer-assisted learning is prevalent in medical education and can help standardize experiences, but often is not used to its fullest advantage. A blended learning curriculum combining web-based modules with face-to-face learning can ensure students obtain core curricular principles. This course was developed and used at The Case Western Reserve University School of Medicine and its associated preceptorship sites in the greater Cleveland area. Leaders of a two-year elective continuity experience at the Case Western Reserve School of Medicine used adult learning principles to develop four interactive online modules presenting basics of office practice, difficult patient interviews, common primary care diagnoses, and disease prevention. They can be viewed at (http://casemed.case.edu/cpcp/curriculum). Students completed surveys rating the content and technical performance of each module and completed a Generalist OSCE exam at the end of the course. Participating students rated all aspects of the course highly; particularly those related to charting and direct patient care. Additionally, they scored very well on the Generalist OSCE exam. Students found the web-based modules to be valuable and to enhance their clinical learning. The blended learning model is a useful tool in designing web-based curriculum for enhancing the clinical curriculum of medical students.

  8. Observed and modelled effects of auroral precipitation on the thermal ionospheric plasma: comparing the MICA and Cascades2 sounding rocket events

    Science.gov (United States)

    Lynch, K. A.; Gayetsky, L.; Fernandes, P. A.; Zettergren, M. D.; Lessard, M.; Cohen, I. J.; Hampton, D. L.; Ahrns, J.; Hysell, D. L.; Powell, S.; Miceli, R. J.; Moen, J. I.; Bekkeng, T.

    2012-12-01

    Auroral precipitation can modify the ionospheric thermal plasma through a variety of processes. We examine and compare the events seen by two recent auroral sounding rockets carrying in situ thermal plasma instrumentation. The Cascades2 sounding rocket (March 2009, Poker Flat Research Range) traversed a pre-midnight poleward boundary intensification (PBI) event distinguished by a stationary Alfvenic curtain of field-aligned precipitation. The MICA sounding rocket (February 2012, Poker Flat Research Range) traveled through irregular precipitation following the passage of a strong westward-travelling surge. Previous modelling of the ionospheric effects of auroral precipitation used a one-dimensional model, TRANSCAR, which had a simplified treatment of electric fields and did not have the benefit of in situ thermal plasma data. This new study uses a new two-dimensional model which self-consistently calculates electric fields to explore both spatial and temporal effects, and compares to thermal plasma observations. A rigorous understanding of the ambient thermal plasma parameters and their effects on the local spacecraft sheath and charging, is required for quantitative interpretation of in situ thermal plasma observations. To complement this TRANSCAR analysis we therefore require a reliable means of interpreting in situ thermal plasma observation. This interpretation depends upon a rigorous plasma sheath model since the ambient ion energy is on the order of the spacecraft's sheath energy. A self-consistent PIC model is used to model the spacecraft sheath, and a test-particle approach then predicts the detector response for a given plasma environment. The model parameters are then modified until agreement is found with the in situ data. We find that for some situations, the thermal plasma parameters are strongly driven by the precipitation at the observation time. For other situations, the previous history of the precipitation at that position can have a stronger

  9. Small rocket research and technology

    Science.gov (United States)

    Schneider, Steven; Biaglow, James

    1993-11-01

    Small chemical rockets are used on nearly all space missions. The small rocket program provides propulsion technology for civil and government space systems. Small rocket concepts are developed for systems which encompass reaction control for launch and orbit transfer systems, as well as on-board propulsion for large space systems and earth orbit and planetary spacecraft. Major roles for on-board propulsion include apogee kick, delta-V, de-orbit, drag makeup, final insertions, north-south stationkeeping, orbit change/trim, perigee kick, and reboost. The program encompasses efforts on earth-storable, space storable, and cryogenic propellants. The earth-storable propellants include nitrogen tetroxide (NTO) as an oxidizer with monomethylhydrazine (MMH) or anhydrous hydrazine (AH) as fuels. The space storable propellants include liquid oxygen (LOX) as an oxidizer with hydrazine or hydrocarbons such as liquid methane, ethane, and ethanol as fuels. Cryogenic propellants are LOX or gaseous oxygen (GOX) as oxidizers and liquid or gaseous hydrogen as fuels. Improved performance and lifetime for small chemical rockets are sought through the development of new predictive tools to understand the combustion and flow physics, the introduction of high temperature materials to eliminate fuel film cooling and its associated combustion inefficiency, and improved component designs to optimize performance. Improved predictive technology is sought through the comparison of both local and global predictions with experimental data. Results indicate that modeling of the injector and combustion process in small rockets needs improvement. High temperature materials require the development of fabrication processes, a durability data base in both laboratory and rocket environments, and basic engineering property data such as strength, creep, fatigue, and work hardening properties at both room and elevated temperature. Promising materials under development include iridium-coated rhenium and a

  10. Prospects and challenges in teachers’ adoption of a new modeling orientated science curriculum in lower secondary school in Denmark

    DEFF Research Database (Denmark)

    Nielsen, Sanne Schnell

    A new science curriculum with a significant emphasis on modeling has recently been enacted in the Danish compulsory school. This design based study aims to investigate science teachers’ beliefs, practice and reflections in response to the new curriculum. The data sources include teacher-generated......A new science curriculum with a significant emphasis on modeling has recently been enacted in the Danish compulsory school. This design based study aims to investigate science teachers’ beliefs, practice and reflections in response to the new curriculum. The data sources include teacher...... towards the modeling emphasis in the new curriculum, but nevertheless use a restricted range of modeling practices and pay limited attention to the purpose and utility of models. Teachers raised concerns in enacting the new curriculum due to: (i) Lack of time for preparations and teamwork, (ii) Shortage....... Their intentions reflect a very broad perspective on modeling by incorporating other science practices and focusing on models and modeling as a process. However, when enacting the intentions into practice their focus largely narrowed to see models as a product of content knowledge and concepts to be learned...

  11. Medical students and professionalism - Do the hidden curriculum and current role models fail our future doctors?

    Science.gov (United States)

    Joynt, Gavin Matthew; Wong, Wai-Tat; Ling, Lowell; Lee, Anna

    2017-12-21

    Formal medical curricula aim to promote professionalism through learning from lectures, interactive tutorials and simulations. We report an exploratory voting exercise, conducted within a new integrated professional teaching module, examining the likely influence on students' knowledge and perceptions of truth telling. Responses were collected from cohorts of final year students over a six-year period. Students were asked to pick between two responses to a standardized clinical vignette, firstly the response that they personally thought was the more desirable action, and subsequently the response they believed would most likely result in the context of everyday real-life clinical practice. The difference (proportional change) in voting for "avoid full disclosure" from vote 1 (more desirable action) to vote 2 (likely real-life response) was 50% (95% CI: 36-64%, p strategies to manage the hidden curriculum, prepare clinical teachers to be good role models, and prepare students to be discerning about the hidden curriculum and when choosing role models.

  12. The flight of uncontrolled rockets

    CERN Document Server

    Gantmakher, F R; Dryden, H L

    1964-01-01

    International Series of Monographs on Aeronautics and Astronautics, Division VII, Volume 5: The Flight of Uncontrolled Rockets focuses on external ballistics of uncontrolled rockets. The book first discusses the equations of motion of rockets. The rocket as a system of changing composition; application of solidification principle to rockets; rotational motion of rockets; and equations of motion of the center of mass of rockets are described. The text looks at the calculation of trajectory of rockets and the fundamentals of rocket dispersion. The selection further focuses on the dispersion of f

  13. Adapting a Community of Practice Model to Design an Innovative Ethics Curriculum in Healthcare

    OpenAIRE

    Naidoo, Sudeshni; Vernillo, Anthony T.

    2013-01-01

    The focus of healthcare ethics within the framework of ethical principles and philosophical foundations has always, in recent times, been the community, namely, the healthcare provider, the patient or, in research, the study participant. An initiative is thus described whereby a community of practice (CoP) model was developed around health ethics in health research, education and clinical care. The ethics curriculum was redesigned to include several components that are integrated and all embr...

  14. Investigating Academic Literacy Expectations: A Curriculum Audit Model

    Science.gov (United States)

    Armstrong, Sonya L.; Stahl, Norman A.; Kantner, M. Joanne

    2015-01-01

    Although much research has examined students' readiness levels as they prepare to transition from high school to college, little published research exists on the specific literacy expectations students will face in their early college experiences. This article provides an overview of a model for determining the reading demands and expectations in…

  15. Developing a comprehensive and articulated nuclear training curriculum - the Westinghouse model

    International Nuclear Information System (INIS)

    Scholand, G.W.

    1983-01-01

    The training of nuclear power plant personnel to a level that meets the needs of public safety and plant efficiency has become an important issue. Following an evaluation of its training program, Westinghouse have, after considerable research and development, upgraded their program. This process is described. The steps covered include conducting the task analysis, identifying the appropriate educational domains and taxonomies, writing behavioural objectives, sequencing the objectives, selecting the proper mode of instructional delivery the unit of instruction and evaluating the actual effectiveness of the curriculum product. As these tasks are conducted on a microscopic scale for discrete units of information, a macroscopic analysis is also being conducted to organize and sequence global topic areas, thus producing a comprehensive and articulated curriculum model. (U.K.)

  16. Development of a death education curriculum model for the general public using DACUM method.

    Science.gov (United States)

    Kim, Yong-Ha; Ahn, Sang-Yoon; Lee, Chong-Hyung; Lee, Moo-Sik; Kim, Moon-Joon; Arma, Park; Hwang, Hye-Jeong; Song, Hyeon-Dong; Shim, Moon-Sook; Kim, Kwang-Hwan

    2016-05-18

    In order to analyze tasks of the death education curriculum for the public, DACUM method was used. A committee for DACUM was gathered and a survey was conducted on professors of health care, humanities and social sciences for an interdisciplinary study. In the survey used to verify the model for death education for the public, a compilation based on difficulty and importance factor shows that the 27 tasks including the psychological changes in terminally ill or suicidal patients, healing of stress, acceptance and understanding of death and suicide prevention were identified as needing to be included in the curriculum. The data thus concluded will have to be reviewed when they are applied to actual education to revise the education program to make it more appropriate.

  17. A distance learning model in a physical therapy curriculum.

    Science.gov (United States)

    English, T; Harrison, A L; Hart, A L

    1998-01-01

    In response to the rural health initiative established in 1991, the University of Kentucky has developed an innovative distance learning program of physical therapy instruction that combines classroom lecture and discussion via compressed video technology with laboratory experiences. The authors describe the process of planning, implementing, and evaluating a specific distance learning course in pathomechanics for the professional-level master's-degree physical therapy students at the University of Kentucky. This presentation may serve as a model for teaching distance learning. Descriptions of optimal approaches to preclass preparation, scheduling, course delivery, use of audiovisual aids, use of handout material, and video production are given. Special activities that may enhance or deter the achievement of the learning objectives are outlined, and a problem-solving approach to common problems encountered is presented. An approach to evaluating and comparing course outcomes for the distance learnere is presented. For this particular course, there was no statistically significant difference in the outcome measures utilized to compare the distance learners with the on-site learners.

  18. Replacement of chemical rocket launchers by beamed energy propulsion.

    Science.gov (United States)

    Fukunari, Masafumi; Arnault, Anthony; Yamaguchi, Toshikazu; Komurasaki, Kimiya

    2014-11-01

    Microwave Rocket is a beamed energy propulsion system that is expected to reach space at drastically lower cost. This cost reduction is estimated by replacing the first-stage engine and solid rocket boosters of the Japanese H-IIB rocket with Microwave Rocket, using a recently developed thrust model in which thrust is generated through repetitively pulsed microwave detonation with a reed-valve air-breathing system. Results show that Microwave Rocket trajectory, in terms of velocity versus altitude, can be designed similarly to the current H-IIB first stage trajectory. Moreover, the payload ratio can be increased by 450%, resulting in launch-cost reduction of 74%.

  19. The model of dynamics and control of modified optical scanning seeker in anti-aircraft rocket missile

    Science.gov (United States)

    Gapinski, Daniel; Koruba, Zbigniew; Krzysztofik, Izabela

    2014-04-01

    The paper presents the concept of a modified optical scanning seeker. Programmed and tracking controls have been developed with the simultaneous influence of external interferences from the direction of self-guiding rocket missile. The numerical analysis for the proposed scanning seeker has been conducted. It appears from the conducted research that the seeker maintains accurately the set direction in space despite the occurrence of large angular accelerations of the missile. Moreover, the control of the seeker's axis is done with sufficient accuracy for self-guidance with the use of small control moments.

  20. Presentation on the Modeling and Educational Demonstrations Laboratory Curriculum Materials Center (MEDL-CMC): A Working Model and Progress Report

    Science.gov (United States)

    Glesener, G. B.; Vican, L.

    2015-12-01

    Physical analog models and demonstrations can be effective educational tools for helping instructors teach abstract concepts in the Earth, planetary, and space sciences. Reducing the learning challenges for students using physical analog models and demonstrations, however, can often increase instructors' workload and budget because the cost and time needed to produce and maintain such curriculum materials is substantial. First, this presentation describes a working model for the Modeling and Educational Demonstrations Laboratory Curriculum Materials Center (MEDL-CMC) to support instructors' use of physical analog models and demonstrations in the science classroom. The working model is based on a combination of instructional resource models developed by the Association of College & Research Libraries and by the Physics Instructional Resource Association. The MEDL-CMC aims to make the curriculum materials available for all science courses and outreach programs within the institution where the MEDL-CMC resides. The sustainability and value of the MEDL-CMC comes from its ability to provide and maintain a variety of physical analog models and demonstrations in a wide range of science disciplines. Second, the presentation then reports on the development, progress, and future of the MEDL-CMC at the University of California Los Angeles (UCLA). Development of the UCLA MEDL-CMC was funded by a grant from UCLA's Office of Instructional Development and is supported by the Department of Earth, Planetary, and Space Sciences. Other UCLA science departments have recently shown interest in the UCLA MEDL-CMC services, and therefore, preparations are currently underway to increase our capacity for providing interdepartmental service. The presentation concludes with recommendations and suggestions for other institutions that wish to start their own MEDL-CMC in order to increase educational effectiveness and decrease instructor workload. We welcome an interuniversity collaboration to

  1. Rocket Ozone Data Recovery for Digital Archival

    Science.gov (United States)

    Hwang, S. H.; Krueger, A. J.; Hilsenrath, E.; Haffner, D. P.; Bhartia, P. K.

    2014-12-01

    Ozone distributions in the photochemically-controlled upper stratosphere and mesosphere were first measured using spectrometers on V-2 rockets after WWII. The IGY(1957-1958) spurred development of new optical and chemical instruments for flight on meteorological and sounding rockets. In the early 1960's, the US Navy developed an Arcas rocket-borne optical ozonesonde and NASA GSFC developed chemiluminescent ozonesonde onboard Nike_Cajun and Arcas rocket. The Navy optical ozone program was moved in 1969 to GSFC where rocket ozone research was expanded and continued until 1994 using Super Loki-Dart rocket at 11 sites in the range of 0-65N and 35W-160W. Over 300 optical ozone soundings and 40 chemiluminescent soundings were made. The data have been used to produce the US Standard Ozone Atmosphere, determine seasonal and diurnal variations, and validate early photochemical models. The current effort includes soundings conducted by Australia, Japan, and Korea using optical techniques. New satellite ozone sounding techniques were initially calibrated and later validated using the rocket ozone data. As satellite techniques superseded the rocket methods, the sponsoring agencies lost interest in the data and many of those records have been discarded. The current task intends to recover as much of the data as possible from the private records of the experimenters and their publications, and to archive those records in the WOUDC (World Ozone and Ultraviolet Data Centre). The original data records are handwritten tabulations, computer printouts that are scanned with OCR techniques, and plots digitized from publications. This newly recovered digital rocket ozone profile data from 1965 to 2002 could make significant contributions to the Earth science community in atmospheric research including long-term trend analysis.

  2. Endoscopic simulator curriculum improves colonoscopy performance in novice surgical interns as demonstrated in a swine model.

    Science.gov (United States)

    Telem, Dana A; Rattner, David W; Gee, Denise W

    2014-05-01

    The purpose of this study was to determine whether independent virtual endoscopic training accelerates the acquisition of endoscopic skill by novice surgical interns. Nine novice surgical interns participated in a prospective study comparing colonoscopy performance in a swine model before and after an independent simulator curriculum. An independent observer evaluated each intern for the ability to reach the cecum within 20 min and technical ability as determined by Global Assessment of Gastrointestinal Endoscopic Skills--Colonoscopy (GAGES-C) score and performance compared. In addition, at the conclusion of training, a post test of two basic simulated colonoscopy modules was completed and metrics evaluated. As a control, three attending physicians who routinely perform colonoscopy also completed colonoscopy in the swine model. Prior to endoscopic training, one (11 %) intern successfully intubated the cecum in 19.56 min. Following training, six (67 %) interns reached the cecum with mean time of 9.2 min (p curriculum intern times demonstrated the experts to be significantly faster (p curriculum demonstrated significantly improved GI Mentor™ performance in the efficiency (79 vs. 67.1 %, p = 0.05) and time to cecum (3.37 vs. 5.59 min, p = 0.01) metrics. No other significant difference was demonstrated in GAGES-C categories or other simulator parameter. Simulator training on the GI Mentor™ alone significantly improved endoscopic skills in novice surgical interns as demonstrated in a swine model. This study also identified parameters on the GI Mentor™ that could indicate 'clinical readiness'. This study supports the role for endoscopic simulator training in surgical resident education as an adjunct to clinical experience.

  3. Another Look at Rocket Thrust

    Science.gov (United States)

    Hester, Brooke; Burris, Jennifer

    2012-01-01

    Rocket propulsion is often introduced as an example of Newton's third law. The rocket exerts a force on the exhaust gas being ejected; the gas exerts an equal and opposite force--the thrust--on the rocket. Equivalently, in the absence of a net external force, the total momentum of the system, rocket plus ejected gas, remains constant. The law of…

  4. Engineering the curriculum: Towards an adaptive curriculum

    Science.gov (United States)

    Johns-Boast, Lynette Frances

    cohesiveness. Without integrity, a curriculum is unlikely to be able to deliver all its required outcomes. Utilising the concepts of system dynamics and systems thinking I propose that not only is the curriculum a complex adaptive system, it is a multi-dimensional object. Adopting this notion facilitates possible interventions that may be used to monitor the curriculum and to moderate the effects of curriculum drift. I argue that using the articulated purpose of the curriculum to determine the desired outcomes of that curriculum will enhance curricular alignment, leading to improved student learning and outcomes. Furthermore, perceiving the curriculum as a multi-dimensional object reinforces the proposition that aligning the purpose and desired outcomes of each course with those of the program will achieve improved desired outcomes from the program as a whole. The original contributions to knowledge arising from this research are curriculum drift, an enhanced approach to the curricular alignment, and a multi-dimensional view of curriculum. Perhaps the most important implication of this research, is insight into how we might incorporate curriculum drift into curriculum review models. Successful incorporation has the potential to deliver increased quality of educational outcomes by enabling innovation whilst maintaining the integrity of the curriculum.

  5. Evaluating a modeling curriculum by using heuristics for productive disciplinary engagement.

    Science.gov (United States)

    Svoboda, Julia; Passmore, Cynthia

    2010-01-01

    The BIO2010 report provided a compelling argument for the need to create learning experiences for undergraduate biology students that are more authentic to modern science. The report acknowledged the need for research that could help practitioners successfully create and reform biology curricula with this goal in mind. Our objective in this article was to explore how a set of six design heuristics could be used to evaluate the potential of curricula to support productive learning experiences for science students. We drew on data collected during a long-term study of an undergraduate traineeship that introduced students to mathematical modeling in the context of modern biological problems. We present illustrative examples from this curriculum that highlight the ways in which three heuristics-instructor role-modeling, holding students to scientific norms, and providing students with opportunities to practice these norms-consistently supported learning across the curriculum. We present a more detailed comparison of two different curricular modules and explain how differences in student authority, problem structure, and access to resources contributed to differences in productive engagement by students in these modules. We hope that our analysis will help practitioners think in more concrete terms about how to achieve the goals set forth by BIO2010.

  6. The Development of a National Curriculum Guide for Persian: Themes, Genres, Standards-based Goals, and Models

    Directory of Open Access Journals (Sweden)

    Nicole Mills

    2014-08-01

    Full Text Available Wang (2009 has challenged foreign language scholars to “engage in rigorous discussions to develop language-specific examples and performance indicators to guide program development and decision-making for less commonly taught language (LCTL instructors” (p. 284. The 2011-2012 STARTALK programs in Persian aimed to encourage such rigorous discussion through the development of a National Curriculum Guide in Persian. Persian professionals explored current theories in second language acquisition, examined curricular resources and models, and shared successful teaching materials. This article describes the rationale, procedures, and outcomes of a series of faculty development events that aimed to create a model for curriculum development for the LCTLs and, perhaps, also for other language programs in the context of higher education. The final curriculum guide produced by the program participants includes overarching themes and genres, Standards-based goals, strategies for authentic assessment, and model unit plans.

  7. A person-task-context model for designing curriculum and in-training assessment in postgraduate education

    DEFF Research Database (Denmark)

    Skaarup, Anne Marie; Ringsted, Charlotte Vibeke; Henriksen, Ann-Helen

    2006-01-01

    The aim of this study was to trial a person-task-context model in designing a curriculum and in-training assessment programme that embraces trainee level of professional development and the work-based context of postgraduate medical education. The model was applied to the design of a programme...

  8. ROCKET PORT CLOSURE

    Science.gov (United States)

    Mattingly, J.T.

    1963-02-12

    This invention provides a simple pressure-actuated closure whereby windowless observation ports are opened to the atmosphere at preselected altitudes. The closure comprises a disk which seals a windowless observation port in rocket hull. An evacuated instrument compartment is affixed to the rocket hull adjacent the inner surface of the disk, while the outer disk surface is exposed to the atmosphere through which the rocket is traveling. The pressure differential between the evacuated instrument compartment and the relatively high pressure external atmosphere forces the disk against the edge of the observation port, thereby effecting a tight seai. The instrument compartment is evacuated to a pressure equal to the atmospheric pressure existing at the altitude at which it is desiretl that the closure should open. When the rocket reaches this preselected altitude, the inwardly directed atmospheric force on the disk is just equaled by the residual air pressure force within the instrument compartment. Consequently, the closure disk falls away and uncovers the open observation port. The separation of the disk from the rocket hull actuates a switch which energizes the mechanism of a detecting instrument disposed within the instrument compartment. (AE C)

  9. Rocket noise - A review

    Science.gov (United States)

    McInerny, S. A.

    1990-10-01

    This paper reviews what is known about far-field rocket noise from the controlled studies of the late 1950s and 1960s and from launch data. The peak dimensionless frequency, the dependence of overall sound power on exhaust parameters, and the directivity of the overall sound power of rockets are compared to those of subsonic jets and turbo-jets. The location of the dominant sound source in the rocket exhaust plume and the mean flow velocity in this region are discussed and shown to provide a qualitative explanation for the low peak Strouhal number, fD(e)/V(e), and large angle of maximum directivity. Lastly, two empirical prediction methods are compared with data from launches of a Titan family vehicle (two, solid rocket motors of 5.7 x 10 to the 6th N thrust each) and the Saturn V (five, liquid oxygen/rocket propellant engines of 6.7 x 10 to the 6th N thrust, each). The agreement is favorable. In contrast, these methods appear to overpredict the far-field sound pressure levels generated by the Space Shuttle.

  10. Assessing the effect of adding interactive modeling to the geoscience curriculum

    Science.gov (United States)

    Castillo, A.; Marshall, J.; Cardenas, M.

    2013-12-01

    Technology and computer models enhance the learning experience when appropriately utilized. Moreover, learning is significantly improved when effective visualization is combined with models of processes allowing for inquiry-based problem solving. Still, hands-on experiences in real scenarios result in better contextualization of related problems compared to virtual laboratories. Therefore, the role of scientific visualization, technology, and computer modeling is to enhance, not displace, the learning experience by supplementing real-world problem solving and experiences, although in some circumstances, they can adequately serve to take the place of reality. The key to improving scientific education is to embrace an inquiry-based approach that favorably uses technology. This study will attempt to evaluate the effect of adding interactive modeling to the geological sciences curriculum. An assessment tool, designed to assess student understanding of physical hydrology, was used to evaluate a curriculum intervention based on student learning with a data- and modeling-driven approach using COMSOL Multiphysics software. This intervention was implemented in an upper division and graduate physical hydrology course in fall 2012. Students enrolled in the course in fall 2011 served as the control group. Interactive modeling was added to the curriculum in fall 2012 to replace the analogous mathematical modeling done by hand in fall 2011. Pre- and post-test results were used to assess and report its effectiveness. Student interviews were also used to probe student reactions to both the experimental and control curricula. The pre- and post-tests asked students to describe the significant processes in the hydrological cycle and describe the laws governing these processes. Their ability to apply their knowledge in a real-world problem was also assessed. Since the pre- and post-test data failed to meet the assumption of normality, a non-parametric Kruskal-Wallis test was run to

  11. Increasing diversity in international education: Programming for non-traditional students through an alternative curriculum model

    Directory of Open Access Journals (Sweden)

    Rebecca A. Clothey

    2016-05-01

    Full Text Available This paper looks at an alternative curriculum model for study abroad designed specifically to address some of the needs of non-traditional students enrolled in an online education program. In order to meet the needs of non-traditional students and provide quality international programming for them, it is necessary first to understand their restraints to studying abroad, and then to design alternative educational models that can address these challenges. The paper describes the challenges of balancing the need to create quality international learning opportunities for education students, with the limitations faced by non-traditional online adult learners who have families and full-time jobs. It is based on an action research case study of two study abroad programs implemented for online students at a northeastern four-year research-one institution of higher education.

  12. Entrepreneurial Curriculum through Digital-Age Learning in Higher Education – A Process-based Model

    Directory of Open Access Journals (Sweden)

    Elena FLEACĂ

    2017-08-01

    Full Text Available ICT revolution with direct impact on digital economy and society involves new knowledge, skills and competences for students striving to compete and succeed in a technological rich marketplace. The higher education providers are accountable for inspiring and helping students to acquire relevant and updated skills i.e. entrepreneurial and digital skills needed to innovate in the world of work. These challenges require designing entrepreneurial curriculum to promote innovation and exploitation of the potential of new technologies and digital content. The paper aims to support the modernisation initiatives of organisational organisations i.e. higher education institutions in the attempt to embrace digital technologies in teaching and learning practices. It proposes a process-based model to integrate and leverage digital learning technologies in teaching, learning and organisational practices. The results depict a coherent methodology for designing, applying, over sighting and fine-tuning the entrepreneurial curriculum with embedded digital-age learning practices as key means for stepping up digital changes in educational practices.

  13. [Nationwide questionnaire study in "the Model Core Curriculum" and current status for the undergraduate education in neurology].

    Science.gov (United States)

    Sasaki, Hidenao; Arimura, Kimiyoshi; Itoyama, Yasuto; Kwak, Shin; Kira, Jun-Ichi; Nakashima, Kenji; Amano, Takahiro; Inoue, Kiyoharu; Uozumi, Takenori; Kohara, Nobuo; Tsuji, Sadatoshi; Tamagawa, Akira; Toyoshima, Itaru; Mizutani, Tomohiko; Yoshii, Fumihito; Sobue, Gen; Shimizu, Teruo

    2008-08-01

    To investigate the current state of education for undergraduates, the subcommittee of the Japanese Society of Neurology for undergraduate education sent a questionnaire on the 2001-version of Model Core Curriculum to the department of neurology in 80 medical universities and their 7 associate medical institutes throughout Japan. Answers were obtained from 56 out of those 87 institutes (64.4%). According to the answers, the Core Curriculum was introduced to the program of undergraduate education in 93% of those 56 universities. For the revision of neurology part in the current Core Curriculum, there are number of requests for improving the description on the neurological examination, list of common symptoms and disorders, and addition of therapeutics. Despite application of the Model Core Curriculum in medical education, the present study disclosed that there were considerable difference in the number and content of the lectures, and the duration of clinical clerkship in neurology ward. These differences of the curriculum and training program depends on not only the number of staffs, but also whether they are working as staffs in a department of neurology or as a small group of neurologists within a department other than neurology.

  14. Examining the (False) Dichotomy between "Care" and "Education" in Early Childhood Programs: A Descriptive Case Study of Teacher-Child Relationships within a Standardized Curriculum Model

    Science.gov (United States)

    Ostrove, Randi

    2016-01-01

    Public preschool programs using standardized curriculum models are increasing rapidly, and while research has shown that teacher-child relationships have been used successfully as an intervention and compensatory measure, it is unclear what influence the public preschool setting and the use of a curriculum model have on teacher-child…

  15. Cryogenic rocket engine development at Delft aerospace rocket engineering

    NARCIS (Netherlands)

    Wink, J; Hermsen, R.; Huijsman, R; Akkermans, C.; Denies, L.; Barreiro, F.; Schutte, A.; Cervone, A.; Zandbergen, B.T.C.

    2016-01-01

    This paper describes the current developments regarding cryogenic rocket engine technology at Delft Aerospace Rocket Engineering (DARE). DARE is a student society based at Delft University of Technology with the goal of being the first student group in the world to launch a rocket into space. After

  16. A stepwise model for simulation-based curriculum development for clinical skills, a modification of the six-step approach.

    Science.gov (United States)

    Khamis, Nehal N; Satava, Richard M; Alnassar, Sami A; Kern, David E

    2016-01-01

    Despite the rapid growth in the use of simulation in health professions education, courses vary considerably in quality. Many do not integrate efficiently into an overall school/program curriculum or conform to academic accreditation requirements. Moreover, some of the guidelines for simulation design are specialty specific. We designed a model that integrates best practices for effective simulation-based training and a modification of Kern et al.'s 6-step approach for curriculum development. We invited international simulation and health professions education experts to complete a questionnaire evaluating the model. We reviewed comments and suggested modifications from respondents and reached consensus on a revised version of the model. We recruited 17 simulation and education experts. They expressed a consensus on the seven proposed curricular steps: problem identification and general needs assessment, targeted needs assessment, goals and objectives, educational strategies, individual assessment/feedback, program evaluation, and implementation. We received several suggestions for descriptors that applied the steps to simulation, leading to some revisions in the model. We have developed a model that integrates principles of curriculum development and simulation design that is applicable across specialties. Its use could lead to high-quality simulation courses that integrate efficiently into an overall curriculum.

  17. Rockets in World War I

    Science.gov (United States)

    2004-01-01

    World War I enlisted rockets once again for military purposes. French pilots rigged rockets to the wing struts of their airplanes and aimed them at enemy observation balloons filled with highly inflammable hydrogen.

  18. THE DEVELOPMENT OF CHARACTER EDUCATION MODEL TROUGH AN INTEGRATED CURRICULUM AT ELEMENTARY EDUCATION LEVEL IN

    Directory of Open Access Journals (Sweden)

    Amini

    2017-11-01

    Full Text Available Character education is an effort to help the development of the soul of children/learners both inward and inward to a better human. Therefore character education is a continuous and never ending process, in order to produce a future human figure rooted in the cultural values of the Indonesian nation. Thus character education has a higher meaning than moral education, because character education is not only about right-wrong problems, but how to instill habits of good things in life, so that children / learners will have awareness, and high understanding, as well as concern and commitment to apply the virtues in everyday life. Character education in today's context is very relevant to children / learners to overcome the moral crisis that is happening in our country. Whether or not this real moral crisis exists that involves our generation is our children as future leaders. The crisis is among others promiscuity, crime against friends, teenage theft, cheating habits, drug abuse and drugs, pornography, and so forth. This should be addressed early on by characterizing character education through an integrated curriculum to children / learners. This is done by researchers as a continuation of research activities in 2015 with the object of basic education research in Muhammadiyah Elementary School 29 of Sunggal. The year 2016 was continued again in Muhammadiyah Junior High School 47 of Sunggal as part of basic education. Because the socalled elementary education is elementary (primary school and junior (junior high school equal. This research was conducted to see the development of character education model conducted in SMP Muhammadiyah 47 Sunggal through integrated curriculum. Because so far there is a stigma that the character education education is only the responsibility of teachers REM and PCE in school, so that dichotomous character education (only inculcated by both teachers while other teachers do not do. It turns out through an integrated

  19. [Model core curriculum in neurology--current status and problems after its application to the medical education program].

    Science.gov (United States)

    Sasaki, Hidenao

    2007-11-01

    Taking the needs of society and progress of medicine into account, The Ministry of Education, Culture, Sports, Science and Technology of Japan, reformed the education program and established a "model core curriculum" on Mar 2001, which is introduced to the medial universities since then. Principles of this curriculum consist of selected categories such as lists mandatory for current medicine, set up of optional courses, and voluntary attitude for lifelong studying. To search for The Education Program of Medical University, the subcommittee of the Japanese Society of Neurology sent a Questionnaire on this curriculum to all the Medical Universities of Japan. Answers were obtained from 56 out of 87 Universities. According to them, some agree to the concept and content of the curriculum, while others insist that it is still insufficient to educate update Neurology. The clinical clerkship is important for the students to experience the basic process of neurology. However, the study disclosed that program of clinical clerkship to neurology is different among the institutes. The list of curriculum needs additional neurological disorders and symptoms commonly seen, and that clinical clerkship to neurology must be taken into account as one of compulsory rather than optional course.

  20. Model training curriculum for Low-Level Radioactive Waste Disposal Facility Operations

    International Nuclear Information System (INIS)

    Tyner, C.J.; Birk, S.M.

    1995-09-01

    This document is to assist in the development of the training programs required to be in place for the operating license for a low-level radioactive waste disposal facility. It consists of an introductory document and four additional appendixes of individual training program curricula. This information will provide the starting point for the more detailed facility-specific training programs that will be developed as the facility hires and trains new personnel and begins operation. This document is comprehensive and is intended as a guide for the development of a company- or facility-specific program. The individual licensee does not need to use this model training curriculum as written. Instead, this document can be used as a menu for the development, modification, or verification of customized training programs

  1. Model training curriculum for Low-Level Radioactive Waste Disposal Facility Operations

    Energy Technology Data Exchange (ETDEWEB)

    Tyner, C.J.; Birk, S.M.

    1995-09-01

    This document is to assist in the development of the training programs required to be in place for the operating license for a low-level radioactive waste disposal facility. It consists of an introductory document and four additional appendixes of individual training program curricula. This information will provide the starting point for the more detailed facility-specific training programs that will be developed as the facility hires and trains new personnel and begins operation. This document is comprehensive and is intended as a guide for the development of a company- or facility-specific program. The individual licensee does not need to use this model training curriculum as written. Instead, this document can be used as a menu for the development, modification, or verification of customized training programs.

  2. Health Policy in Physician Assistant Education: Teaching Considerations and a Model Curriculum.

    Science.gov (United States)

    Kidd, Vasco Deon; Cawley, James F; Kayingo, Gerald

    2016-03-01

    Recognition is growing within the medical academic community that future clinicians will need the tools to understand and influence health policy decisions. With the passage of the Patient Protection and Affordable Care Act of 2010, future clinicians will need not only clinical competence for successful practice but also an understanding of how health systems function. Although the fourth edition of the Accreditation Standards for Physician Assistant Education contains provisions and stipulations for the teaching of health topics in general and health policy specifically, physician assistant (PA) educators retain little consensus regarding either learning objectives or specific rubrics for teaching these important concepts. In this article, we discuss approaches for teaching health policy, delineate useful educational resources for PA faculty, and propose a model curriculum.

  3. Thiokol Solid Rocket Motors

    Science.gov (United States)

    Graves, S. R.

    2000-01-01

    This paper presents viewgraphs on thiokol solid rocket motors. The topics include: 1) Communications; 2) Military and government intelligence; 3) Positioning satellites; 4) Remote sensing; 5) Space burial; 6) Science; 7) Space manufacturing; 8) Advertising; 9) Space rescue space debris management; 10) Space tourism; 11) Space settlements; 12) Hazardous waste disposal; 13) Extraterrestrial resources; 14) Fast package delivery; and 15) Space utilities.

  4. The Relativistic Rocket

    Science.gov (United States)

    Antippa, Adel F.

    2009-01-01

    We solve the problem of the relativistic rocket by making use of the relation between Lorentzian and Galilean velocities, as well as the laws of superposition of successive collinear Lorentz boosts in the limit of infinitesimal boosts. The solution is conceptually simple, and technically straightforward, and provides an example of a powerful…

  5. Low toxicity rocket propellants

    NARCIS (Netherlands)

    Wink, J.

    2014-01-01

    Hydrazine (N2H4) and its hypergolic mate nitrogen tetroxide (N2O4) are used on virtually all spacecraft and on a large number of launch vehicles. In recent years however, there has been an effort in identifying and developing alternatives to replace hydrazine as a rocket propellant.

  6. Curriculum vitae of the LOTOS–EUROS (v2.0 chemistry transport model

    Directory of Open Access Journals (Sweden)

    A. M. M. Manders

    2017-11-01

    Full Text Available The development and application of chemistry transport models has a long tradition. Within the Netherlands the LOTOS–EUROS model has been developed by a consortium of institutes, after combining its independently developed predecessors in 2005. Recently, version 2.0 of the model was released as an open-source version. This paper presents the curriculum vitae of the model system, describing the model's history, model philosophy, basic features and a validation with EMEP stations for the new benchmark year 2012, and presents cases with the model's most recent and key developments. By setting the model developments in context and providing an outlook for directions for further development, the paper goes beyond the common model description.With an origin in ozone and sulfur modelling for the models LOTOS and EUROS, the application areas were gradually extended with persistent organic pollutants, reactive nitrogen, and primary and secondary particulate matter. After the combination of the models to LOTOS–EUROS in 2005, the model was further developed to include new source parametrizations (e.g. road resuspension, desert dust, wildfires, applied for operational smog forecasts in the Netherlands and Europe, and has been used for emission scenarios, source apportionment, and long-term hindcast and climate change scenarios. LOTOS–EUROS has been a front-runner in data assimilation of ground-based and satellite observations and has participated in many model intercomparison studies. The model is no longer confined to applications over Europe but is also applied to other regions of the world, e.g. China. The increasing interaction with emission experts has also contributed to the improvement of the model's performance. The philosophy for model development has always been to use knowledge that is state of the art and proven, to keep a good balance in the level of detail of process description and accuracy of input and output, and to keep a good record

  7. Application of Context Input Process and Product Model in Curriculum Evaluation: Case Study of a Call Centre

    Science.gov (United States)

    Kavgaoglu, Derya; Alci, Bülent

    2016-01-01

    The goal of this research which was carried out in reputable dedicated call centres within the Turkish telecommunication sector aims is to evaluate competence-based curriculums designed by means of internal funding through Stufflebeam's context, input, process, product (CIPP) model. In the research, a general scanning pattern in the scope of…

  8. Learning-Goals-Driven Design Model: Developing Curriculum Materials that Align with National Standards and Incorporate Project-Based Pedagogy

    Science.gov (United States)

    Krajcik, Joseph; McNeill, Katherine L.; Reiser, Brian J.

    2008-01-01

    Reform efforts in science education emphasize the importance of rigorous treatment of science standards and use of innovative pedagogical approaches to make science more meaningful and successful. In this paper, we present a learning-goals-driven design model for developing curriculum materials, which combines national standards and a…

  9. Launch Preparation and Rocket Launching

    Science.gov (United States)

    1991-05-23

    equipment: switchgear , power sources, onboard cable system. The imitation of prelaunch servicing procedure, launching and rocket flight is carried out...in center of container between it and rocket are installed four bushings from foam plastic. These bushings hold rocket in the center of container and

  10. Baking Soda and Vinegar Rockets

    Science.gov (United States)

    Claycomb, James R.; Zachary, Christopher; Tran, Quoc

    2009-01-01

    Rocket experiments demonstrating conservation of momentum will never fail to generate enthusiasm in undergraduate physics laboratories. In this paper, we describe tests on rockets from two vendors that combine baking soda and vinegar for propulsion. The experiment compared two analytical approximations for the maximum rocket height to the…

  11. Summary of Low-Lift Drag and Directional Stability Data from Rocket Models of the Douglas XF4D-1 Airplane with and without External Stores and Rocket Packets at Mach Numbers from 0.8 to 1.38 TED No. NACA DE-349

    Science.gov (United States)

    Mitcham, Grady L.; Blanchard, Willard S.; Hastings, Earl C., Jr.

    1952-01-01

    At the request of the Bureau of Aeronautics, Department of the Navy, an investigation at transonic and low supersonic speeds of the drag and longitudinal trim characteristics of the Douglas XF4D-1 airplane is being conducted by the Langley Pilotless Aircraft Research Division. The Douglas XF4D-1 is a jet-propelled, low-aspect-ratio, swept-wing, tailless, interceptor-type airplane designed to fly at low supersonic speeds. As a part of this investigation, flight tests were made using rocket- propelled 1/10- scale models to determine the effect of the addition of 10 external stores and rocket packets on the drag at low lift coefficients. In addition to these data, some qualitative values of the directional stability parameter C(sub n beta) and duct total-pressure recovery are also presented.

  12. Development of Flow and Heat Transfer Models for the Carbon Fiber Rope in Nozzle Joints of the Space Shuttle Reusable Solid Rocket Motor

    Science.gov (United States)

    Wang, Q.; Ewing, M. E.; Mathias, E. C.; Heman, J.; Smith, C.; McCool, Alex (Technical Monitor)

    2001-01-01

    Methodologies have been developed for modeling both gas dynamics and heat transfer inside the carbon fiber rope (CFR) for applications in the space shuttle reusable solid rocket motor joints. Specifically, the CFR is modeled using an equivalent rectangular duct with a cross-section area, friction factor and heat transfer coefficient such that this duct has the same amount of mass flow rate, pressure drop, and heat transfer rate as the CFR. An equation for the friction factor is derived based on the Darcy-Forschheimer law and the heat transfer coefficient is obtained from pipe flow correlations. The pressure, temperature and velocity of the gas inside the CFR are calculated using the one-dimensional Navier-Stokes equations. Various subscale tests, both cold flow and hot flow, have been carried out to validate and refine this CFR model. In particular, the following three types of testing were used: (1) cold flow in a RSRM nozzle-to-case joint geometry, (2) cold flow in a RSRM nozzle joint No. 2 geometry, and (3) hot flow in a RSRM nozzle joint environment simulator. The predicted pressure and temperature history are compared with experimental measurements. The effects of various input parameters for the model are discussed in detail.

  13. Models and Materials: Bridging Art and Science in the Secondary Curriculum

    Science.gov (United States)

    Pak, D.; Cavazos, L.

    2006-12-01

    Creating and sustaining student engagement in science is one challenge facing secondary teachers. The visual arts provide an alternative means of communicating scientific concepts to students who may not respond to traditional formats or identify themselves as interested in science. We have initiated a three-year teacher professional development program at U C Santa Barbara focused on bridging art and science in secondary curricula, to engage students underrepresented in science majors, including girls, English language learners and non-traditional learners. The three-year format provides the teams of teachers with the time and resources necessary to create innovative learning experiences for students that will enhance their understanding of both art and science content. Models and Materials brings together ten secondary art and science teachers from six Santa Barbara County schools. Of the five participating science teachers, three teach Earth Science and two teach Life Science. Art and science teachers from each school are teamed and challenged with the task of creating integrated curriculum projects that bring visual art concepts to the science classroom and science concepts to the art classroom. Models and Materials were selected as unifying themes; understanding the concept of models, their development and limitations, is a prominent goal in the California State Science and Art Standards. Similarly, the relationship between composition, structure and properties of materials is important to both art and science learning. The program began with a 2-week institute designed to highlight the natural links between art and science through presentations and activities by both artists and scientists, to inspire teachers to develop new ways to present models in their classrooms, and for the teacher teams to brainstorm ideas for curriculum projects. During the current school year, teachers will begin to integrate science and art and the themes of modeling and materials

  14. Implementation of a comprehensive competency-based transoral robotic surgery training curriculum with ex vivo dissection models.

    Science.gov (United States)

    Sobel, Ryan H; Blanco, Ray; Ha, Patrick K; Califano, Joseph A; Kumar, Rajesh; Richmon, Jeremy D

    2016-10-01

    Despite its increasingly widespread adoption of transoral robotic surgery (TORS), there is still no uniform training curriculum. The purpose of this study was to describe the results of our novel TORS curriculum training program in which we introduce ex vivo dissection models for radical tonsillectomy and base of tongue (BOT) resections. Prospective blinded data collection and objective assessment of a novel training curriculum. Trainee performance was evaluated on objective structured assessments of technical skills (OSATS) metrics, measured resection time, and margin analysis. Additionally, 4 expert TORS surgeons completed the ex vivo dissections. Trainees achieved OSATS scores similar to those of experts in both the BOT resection and radical tonsillectomy models. Peripheral and deep surgical margin measurements in the BOT model were significantly improved after training and were comparable to experts. This graduated curriculum provides a realistic training experience to develop competency with oropharyngeal resections before transition to the operating room. © 2016 Wiley Periodicals, Inc. Head Neck 38: First-1563, 2016. © 2016 Wiley Periodicals, Inc.

  15. A model for teacher learning in the context of a curriculum renewal

    NARCIS (Netherlands)

    Coenders, Ferdinand G.M.; Terlouw, C.

    2012-01-01

    Teachers play a crucial role in curriculum changes, as they are the ones to implement a new curriculum in class. Therefore, teachers need to bring their knowledge and beliefs (pedagogical content knowledge) in line with the new curricular demands. The reason for the study is the introduction of a

  16. How Can the Secondary School Learning Model Be Adapted to Provide for More Meaningful Curriculum Integration?

    Science.gov (United States)

    Gill, Caroline; Fisher, Anthony

    2014-01-01

    Interest in curriculum integration (CI) has resurged recently as schools seek to bring together knowledge from separate curriculum areas to create a more holistic, integrated learning experience for students to address the demands of "twenty-first century" learning. As the educational sciences deliver new research on the role of the arts…

  17. The Development and Evaluation of a Time Based Network Model of the Industrial Engineering Technology Curriculum at the Southern Technical Institute.

    Science.gov (United States)

    Bannerman, James W.

    A practicum was conducted to develop a scientific management tool that would assist students in obtaining a systems view of their college curriculum and to coordinate planning with curriculum requirements. A modification of the critical path method was employed and the result was a time-based network model of the Industrial Engineering Technology…

  18. International Federation for Emergency Medicine model curriculum for medical student education in emergency medicine.

    Science.gov (United States)

    Hobgood, Cherri; Anantharaman, Venkataraman; Bandiera, Glen; Cameron, Peter; Halpern, Pinchas; Holliman, James; Jouriles, Nicholas; Kilroy, Darren; Mulligan, Terrence; Singer, Andrew

    2010-10-01

    Currently, there is no internationally recognised, standard curriculum that defines the basic minimum standards for emergency medicine education. To address this, the International Federation for Emergency Medicine convened a committee of international experts in emergency medicine and international emergency medicine development to outline a global curriculum for medical students in emergency medicine. This curriculum document represents the consensus of recommendations by this committee. The curriculum is designed with a focus on the basic minimum emergency medicine educational content that any medical school should be delivering to its students during their undergraduate years of training. The content is relevant not just for communities with mature emergency medicine systems, but also for developing nations or for nations seeking to expand emergency medicine within current educational structures. It is anticipated that there will be wide variability in how this curriculum is implemented and taught, reflecting the existing educational milieu, the resources available and the goals of the institutions' educational leadership.

  19. The ECOMA 2007 campaign: rocket observations and numerical modelling of aerosol particle charging and plasma depletion in a PMSE/NLC layer

    Directory of Open Access Journals (Sweden)

    A. Brattli

    2009-02-01

    Full Text Available The ECOMA series of rocket payloads use a set of aerosol particle, plasma, and optical instruments to study the properties of aerosol particles and their interaction with the ambient plasma environment in the polar mesopause region. In August 2007 the ECOMA-3 payload was launched into a region with Polar Mesosphere Summer Echoes (PMSE and noctilucent clouds (NLC. An electron depletion was detected in a broad region between 83 and 88 km, coincident with enhanced density of negatively charged aerosol particles. We also find evidence for positive ion depletion in the same region. Charge neutrality requires that a population of positively charged particles smaller than 2 nm and with a density of at least 2×108 m−3 must also have been present in the layer, undetected by the instruments. A numerical model for the charging of aerosol particles and their interaction with the ambient plasma is used to analyse the results, showing that high aerosol particle densities are required in order to explain the observed ion density depletion. The model also shows that a very high photoionisation rate is required for the particles smaller than 2 nm to become positively charged, indicating that these may have a lower work function than pure water ice.

  20. The ECOMA 2007 campaign: rocket observations and numerical modelling of aerosol particle charging and plasma depletion in a PMSE/NLC layer

    Directory of Open Access Journals (Sweden)

    A. Brattli

    2009-02-01

    Full Text Available The ECOMA series of rocket payloads use a set of aerosol particle, plasma, and optical instruments to study the properties of aerosol particles and their interaction with the ambient plasma environment in the polar mesopause region. In August 2007 the ECOMA-3 payload was launched into a region with Polar Mesosphere Summer Echoes (PMSE and noctilucent clouds (NLC. An electron depletion was detected in a broad region between 83 and 88 km, coincident with enhanced density of negatively charged aerosol particles. We also find evidence for positive ion depletion in the same region. Charge neutrality requires that a population of positively charged particles smaller than 2 nm and with a density of at least 2×108 m−3 must also have been present in the layer, undetected by the instruments. A numerical model for the charging of aerosol particles and their interaction with the ambient plasma is used to analyse the results, showing that high aerosol particle densities are required in order to explain the observed ion density depletion. The model also shows that a very high photoionisation rate is required for the particles smaller than 2 nm to become positively charged, indicating that these may have a lower work function than pure water ice.

  1. Teachers’ Perceptions Regarding the Curriculum Of an 8th Grade English Course Based on the CIPP Model

    OpenAIRE

    Batdı, V.

    2015-01-01

    The purpose of this research is to investigate teachers’ perceptions regarding the curriculum of an 8th grade English course, taught within secondary schools in the 2013 to 2014 academic year, and to analyse these perceptions with Stufflebeam’s context, input, process and product (CIPP) model. As a descriptive survey model, the sampling consisted of 103 English teachers worked in secondary schools in Elazığ and selected randomly from the population. The teacher form of the scale, which was de...

  2. The Effectiveness of Macros-based Cognitive Domain Evaluation Model in Senior High School Based on the Curriculum 2013

    OpenAIRE

    Purnomo, Djoko; Harjito, Harjito; Setyawati, Rina Dwi; Prayito, Muhammad

    2016-01-01

    The particular objective of this study was to investigate the effectiveness of implementation of learning device in the form of macros-based cognitive domain evaluation model via E-learning applied at 10th grade of senior high school in the odd semester based on the curriculum 2013. The method of this study followed the procedures of R & D (Research & Development) developed by Borg and Gall. The results of the research and application development of macros-based evaluation model are effective...

  3. Integrating Spanish language training across a Doctor of Physical Therapy curriculum: a case report of one program's evolving model.

    Science.gov (United States)

    Pechak, Celia; Diaz, Deborah; Dillon, Loretta

    2014-12-01

    As the Hispanic population continues to expand in the United States, health professionals increasingly may encounter people who speak Spanish and have limited English proficiency. Responding to these changes, various health profession educators have incorporated Spanish language training into their curricula. Of 12 doctor of physical therapy (DPT) programs identified as including elective or required Spanish courses, the program at The University of Texas at El Paso is the only one integrating required Spanish language training across the curriculum. The purpose of this case report is to describe the development, implementation, and preliminary outcomes of the evolving educational model at The University of Texas at El Paso. The University of Texas at El Paso is situated immediately across the border from Mexico. Responding to the large population with limited English proficiency in the community, faculty began to integrate required Spanish language training during a transition from a master-level to a DPT curriculum. The Spanish language curriculum pillar includes a Spanish medical terminology course, language learning opportunities threaded throughout the clinical courses, clinical education courses, and service-learning. Forty-five DPT students have completed the curriculum. Assessment methods were limited for early cohorts. Clinically relevant Spanish verbal proficiency was assessed with a practical examination in the Spanish course, a clinical instructor-rated instrument, and student feedback. Preliminary data suggested that the model is improving Spanish language proficiency. The model still is evolving. Spanish language learning opportunities in the curriculum are being expanded. Also, problems with the clinical outcome measure have been recognized. Better definition of intended outcomes and validation of a revised tool are needed. This report should promote opportunities for collaboration with others who are interested in linguistic competence. © 2014

  4. Solar Technology Curriculum, 1980.

    Science.gov (United States)

    Seward County Community Coll., Liberal, KS.

    This curriculum guide contains lecture outlines and handouts for training solar technicians in the installation, maintenance, and repair of solar energy hot water and space heating systems. The curriculum consists of four modular units developed to provide a model through which community colleges and area vocational/technical schools can respond…

  5. Modeling Potential Carbon Monoxide Exposure Due to Operation of a Major Rocket Engine Altitude Test Facility Using Computational Fluid Dynamics

    Science.gov (United States)

    Blotzer, Michael J.; Woods, Jody L.

    2009-01-01

    This viewgraph presentation reviews computational fluid dynamics as a tool for modelling the dispersion of carbon monoxide at the Stennis Space Center's A3 Test Stand. The contents include: 1) Constellation Program; 2) Constellation Launch Vehicles; 3) J2X Engine; 4) A-3 Test Stand; 5) Chemical Steam Generators; 6) Emission Estimates; 7) Located in Existing Test Complex; 8) Computational Fluid Dynamics; 9) Computational Tools; 10) CO Modeling; 11) CO Model results; and 12) Next steps.

  6. A mental model for successful inter-disciplinary collaboration in curriculum innovation for information literacy

    Directory of Open Access Journals (Sweden)

    M. Detken Scheepers

    2011-01-01

    Full Text Available The University of Pretoria introduced a compulsory Information Literacy module to address the need for delivering motivated knowledgeable employees that embrace information and have the skills to find, select and use relevant information accurately, efficiently and effectively in an explosive information age. Low class attendance, an indication of unmotivated students, as well as the limited scholarly application of information literacy skills in consecutive academic years of study have been identified as possible barriers to the application of the desired skills. A collaborative action research project based on Whole Brain principles was introduced to motivate learners through innovative learning material in the module. A deeper understanding of the role of thinking preferences and thinking avoidances is essential in selecting a team that is responsible for the planning, design, development and delivery of learning opportunities and material. This article discusses the Whole Brain Model® as a mental model that underpins the successful collaboration of multidisciplinary teams and enhances innovative curriculum design that addresses alternative approaches to the teaching of Information Literacy.

  7. Neonatal intensive care nursing curriculum challenges based on context, input, process, and product evaluation model: A qualitative study

    Directory of Open Access Journals (Sweden)

    Mansoureh Ashghali-Farahani

    2018-01-01

    Full Text Available Background: Weakness of curriculum development in nursing education results in lack of professional skills in graduates. This study was done on master's students in nursing to evaluate challenges of neonatal intensive care nursing curriculum based on context, input, process, and product (CIPP evaluation model. Materials and Methods: This study was conducted with qualitative approach, which was completed according to the CIPP evaluation model. The study was conducted from May 2014 to April 2015. The research community included neonatal intensive care nursing master's students, the graduates, faculty members, neonatologists, nurses working in neonatal intensive care unit (NICU, and mothers of infants who were hospitalized in such wards. Purposeful sampling was applied. Results: The data analysis showed that there were two main categories: “inappropriate infrastructure” and “unknown duties,” which influenced the context formation of NICU master's curriculum. The input was formed by five categories, including “biomedical approach,” “incomprehensive curriculum,” “lack of professional NICU nursing mentors,” “inappropriate admission process of NICU students,” and “lack of NICU skill labs.” Three categories were extracted in the process, including “more emphasize on theoretical education,” “the overlap of credits with each other and the inconsistency among the mentors,” and “ineffective assessment.” Finally, five categories were extracted in the product, including “preferring routine work instead of professional job,” “tendency to leave the job,” “clinical incompetency of graduates,” “the conflict between graduates and nursing staff expectations,” and “dissatisfaction of graduates.” Conclusions: Some changes are needed in NICU master's curriculum by considering the nursing experts' comments and evaluating the consequences of such program by them.

  8. Unsteady Three-Dimensional Simulation of a Shear Coaxial GO2/GH2 Rocket Injector with RANS and Hybrid-RAN-LES/DES Using Flamelet Models

    Science.gov (United States)

    Westra, Doug G.; West, Jeffrey S.; Richardson, Brian R.

    2015-01-01

    Historically, the analysis and design of liquid rocket engines (LREs) has relied on full-scale testing and one-dimensional empirical tools. The testing is extremely expensive and the one-dimensional tools are not designed to capture the highly complex, and multi-dimensional features that are inherent to LREs. Recent advances in computational fluid dynamics (CFD) tools have made it possible to predict liquid rocket engine performance, stability, to assess the effect of complex flow features, and to evaluate injector-driven thermal environments, to mitigate the cost of testing. Extensive efforts to verify and validate these CFD tools have been conducted, to provide confidence for using them during the design cycle. Previous validation efforts have documented comparisons of predicted heat flux thermal environments with test data for a single element gaseous oxygen (GO2) and gaseous hydrogen (GH2) injector. The most notable validation effort was a comprehensive validation effort conducted by Tucker et al. [1], in which a number of different groups modeled a GO2/GH2 single element configuration by Pal et al [2]. The tools used for this validation comparison employed a range of algorithms, from both steady and unsteady Reynolds Averaged Navier-Stokes (U/RANS) calculations, large-eddy simulations (LES), detached eddy simulations (DES), and various combinations. A more recent effort by Thakur et al. [3] focused on using a state-of-the-art CFD simulation tool, Loci/STREAM, on a two-dimensional grid. Loci/STREAM was chosen because it has a unique, very efficient flamelet parameterization of combustion reactions that are too computationally expensive to simulate with conventional finite-rate chemistry calculations. The current effort focuses on further advancement of validation efforts, again using the Loci/STREAM tool with the flamelet parameterization, but this time with a three-dimensional grid. Comparisons to the Pal et al. heat flux data will be made for both RANS and

  9. Curriculum Pearls for Faculty Members

    Science.gov (United States)

    Staykova, Milena P.

    2013-01-01

    Many nurse educators fear involvement in curriculum development because of limited understanding of what it entails. Curricula, as etymological, epistemological, and phenomenological concepts have attracted the attention of educators for decades. Several curriculum models exist to explain curriculum decision-making, and the relationship among…

  10. A Model to Predict Student Failure in the First Year of the Undergraduate Medical Curriculum

    Directory of Open Access Journals (Sweden)

    Gerard J.A. Baars

    2017-06-01

    Discussion: The earliest moment with the highest specificity to predict student failure in the first-year curriculum seems to be at 6 months. However, additional factors are needed to improve this prediction or to bring forward the predictive moment.

  11. Pressure scaled water impact test of a 12.5 inch diameter model of the Space Shuttle solid rocket booster

    Science.gov (United States)

    1982-01-01

    A total of 59 tail first drops were made. Model entry conditions simulated full scale vertical velocities of approximately 75 to 110 ft/sec with horizontal velocities up to 45 ft/sec and impact angles to + or - 10 deg. These tests were conducted at scaled atmospheric pressures (1.26 psia or 65 mm.Hg). The model, test program, test facility, test equipment, instrumentation system, data reduction procedures, and test results are described.

  12. Damage assessment of long-range rocket system by electromagnetic pulse weapon

    Science.gov (United States)

    Cao, Lingyu; Liu, Guoqing; Li, Jinming

    2017-08-01

    This paper analyzes the damage mechanism and characteristics of electromagnetic pulse weapon, establishes the index system of survivability of long-range rocket launcher system, and uses AHP method to establish the combat effectiveness model of long-range rocket missile system. According to the damage mechanism and characteristics of electromagnetic pulse weapon, the damage effect of the remote rocket system is established by using the exponential method to realize the damage efficiency of the remote rocket system.

  13. International Federation for Emergency Medicine model curriculum for emergency medicine specialists

    Directory of Open Access Journals (Sweden)

    Cherri Hobgood

    2011-06-01

    Full Text Available To meet a critical and growing need for emergency physicians and emergency medicine resources worldwide, physicians must be trained to deliver time-sensitive interventions and lifesaving emergency care. Currently, there is no globally recognized, standard curriculum that defines the basic minimum standards for specialist trainees in emergency medicine. To address this deficit, the International Federation for Emergency Medicine (IFEM convened a committee of international physicians, health professionals, and other experts in emergency medicine and international emergency medicine development to outline a curriculum for training of specialists in emergency medicine. This curriculum document represents the consensus of recommendations by this committee. The curriculum is designed to provide a framework for educational programs in emergency medicine. The focus is on the basic minimum emergency medicine educational content that any emergency medicine physician specialist should be prepared to deliver on completion of a training program. It is designed not to be prescriptive but to assist educators and emergency medicine leadership to advance physician education in basic emergency medicine no matter the training venue. The content of this curriculum is relevant not just for communities with mature emergency medicine systems but in particular for developing nations or for nations seeking to expand emergency medicine within the current educational structure. We anticipate that there will be wide variability in how this curriculum is implemented and taught. This variability will reflect the existing educational milieu, the resources available, and the goals of the institutions’ educational leadership with regard to the training of emergency medicine specialists.

  14. [Kampo Medicine in the New Model Core Curriculum of Pharmaceutical Education].

    Science.gov (United States)

    Kobayashi, Yoshinori

    2016-01-01

    What should we educate for Kampo medicine in the model core curriculum of pharmaceutical education? The curricular core should be discussed considering the points mentioned below. (1) Positioning of Kampo medicine in the Japanese medical care system. Kampo medicine is an authorized medical care category in the National Health Insurance (NHI) program in Japan. The NHI drug price list carries 148 Kampo formulations. According to the report of the Japan Kampo Medicines Manufacturers Association in 2011, approximately 90% of Japanese physicians prescribe Kampo medicines. (2) Differences between Kampo medicine and western medicine: In Kampo medicine, the most suitable formula among various Kampo formulas to normalize the psychophysical state of individual patients is selected. In other words, if there is a complaint, there are always some treatments. (3) A strong point of Kampo medicine: Kampo medicine enables physicians to deal with difficult-to-treat conditions by western medicine alone. Also, by using the scale of Kampo medicine, each patient can grasp his or her own systemic state and improve their lifestyle. To extend healthy life expectancy, a basic knowledge of Kampo medicine may play a significant role in integrated health care. "The guide book of the approval standards for OTC Kampo products", "the pharmaceutical advanced educational guideline", and "the manual of the exam questions preparation for registered sales clerks" should also be consulted before selecting the area and contents that should be covered.

  15. Model Point-of-Care Ultrasound Curriculum in an Intensive Care Unit Fellowship Program and Its Impact on Patient Management

    Directory of Open Access Journals (Sweden)

    Keith Killu

    2014-01-01

    Full Text Available Objectives. This study was designed to assess the clinical applicability of a Point-of-Care (POC ultrasound curriculum into an intensive care unit (ICU fellowship program and its impact on patient care. Methods. A POC ultrasound curriculum for the surgical ICU (SICU fellowship was designed and implemented in an urban, academic tertiary care center. It included 30 hours of didactics and hands-on training on models. Minimum requirement for each ICU fellow was to perform 25–50 exams on respective systems or organs for a total not less than 125 studies on ICU. The ICU fellows implemented the POC ultrasound curriculum into their daily practice in managing ICU patients, under supervision from ICU staff physicians, who were instructors in POC ultrasound. Impact on patient care including finding a new diagnosis or change in patient management was reviewed over a period of one academic year. Results. 873 POC ultrasound studies in 203 patients admitted to the surgical ICU were reviewed for analysis. All studies included were done through the POC ultrasound curriculum training. The most common exams performed were 379 lung/pleural exams, 239 focused echocardiography and hemodynamic exams, and 237 abdominal exams. New diagnosis was found in 65.52% of cases (95% CI 0.590, 0.720. Changes in patient management were found in 36.95% of cases (95% CI 0.303, 0.435. Conclusions. Implementation of POC ultrasound in the ICU with a structured fellowship curriculum was associated with an increase in new diagnosis in about 2/3 and change in management in over 1/3 of ICU patients studied.

  16. Model Point-of-Care Ultrasound Curriculum in an Intensive Care Unit Fellowship Program and Its Impact on Patient Management

    Science.gov (United States)

    Killu, Keith; Coba, Victor; Mendez, Michael; Reddy, Subhash; Adrzejewski, Tanja; Huang, Yung; Ede, Jessica; Horst, Mathilda

    2014-01-01

    Objectives. This study was designed to assess the clinical applicability of a Point-of-Care (POC) ultrasound curriculum into an intensive care unit (ICU) fellowship program and its impact on patient care. Methods. A POC ultrasound curriculum for the surgical ICU (SICU) fellowship was designed and implemented in an urban, academic tertiary care center. It included 30 hours of didactics and hands-on training on models. Minimum requirement for each ICU fellow was to perform 25–50 exams on respective systems or organs for a total not less than 125 studies on ICU. The ICU fellows implemented the POC ultrasound curriculum into their daily practice in managing ICU patients, under supervision from ICU staff physicians, who were instructors in POC ultrasound. Impact on patient care including finding a new diagnosis or change in patient management was reviewed over a period of one academic year. Results. 873 POC ultrasound studies in 203 patients admitted to the surgical ICU were reviewed for analysis. All studies included were done through the POC ultrasound curriculum training. The most common exams performed were 379 lung/pleural exams, 239 focused echocardiography and hemodynamic exams, and 237 abdominal exams. New diagnosis was found in 65.52% of cases (95% CI 0.590, 0.720). Changes in patient management were found in 36.95% of cases (95% CI 0.303, 0.435). Conclusions. Implementation of POC ultrasound in the ICU with a structured fellowship curriculum was associated with an increase in new diagnosis in about 2/3 and change in management in over 1/3 of ICU patients studied. PMID:25478217

  17. Simulation and experimental research on line throwing rocket with flight

    Directory of Open Access Journals (Sweden)

    Wen-bin Gu

    2014-06-01

    Full Text Available The finite segment method is used to model the line throwing rocket system. A dynamic model of line throwing rocket with flight motion based on Kane's method is presented by the kinematics description of the system and the consideration of the forces acting on the system. The experiment designed according to the parameters of the dynamic model is made. The simulation and experiment results, such as range, velocity and flight time, are compared and analyzed. The simulation results are basically agreed with the test data, which shows that the flight motion of the line throwing rocket can be predicted by the dynamic model. A theoretical model and guide for the further research on the disturbance of rope and the guidance, flight control of line throwing rocket are provided by the dynamic modeling.

  18. Rocket + Science = Dialogue

    Science.gov (United States)

    Morris,Bruce; Sullivan, Greg; Burkey, Martin

    2010-01-01

    It's a cliche that rocket engineers and space scientists don t see eye-to-eye. That goes double for rocket engineers working on human spaceflight and scientists working on space telescopes and planetary probes. They work fundamentally different problems but often feel that they are competing for the same pot of money. Put the two groups together for a weekend, and the results could be unscientific or perhaps combustible. Fortunately, that wasn't the case when NASA put heavy lift launch vehicle designers together with astronomers and planetary scientists for two weekend workshops in 2008. The goal was to bring the top people from both groups together to see how the mass and volume capabilities of NASA's Ares V heavy lift launch vehicle could benefit the science community. Ares V is part of NASA's Constellation Program for resuming human exploration beyond low Earth orbit, starting with missions to the Moon. In the current mission scenario, Ares V launches a lunar lander into Earth orbit. A smaller Ares I rocket launches the Orion crew vehicle with up to four astronauts. Orion docks with the lander, attached to the Ares V Earth departure stage. The stage fires its engine to send the mated spacecraft to the Moon. Standing 360 feet high and weighing 7.4 million pounds, NASA's new heavy lifter will be bigger than the 1960s-era Saturn V. It can launch almost 60 percent more payload to translunar insertion together with the Ares I and 35 percent more mass to low Earth orbit than the Saturn V. This super-sized capability is, in short, designed to send more people to more places to do more things than the six Apollo missions.

  19. CURRENT, POTENTIAL AND FUTURE ISSUES: SEMESTA SENIOR HIGH SCHOOL AS MODEL SCHOOL OF EMERGING ICT TO ANSWER 2013 CURRICULUM IMPLEMENTATION

    OpenAIRE

    Candradewi Wahyu Anggraeni; Wasi‘ah Kurniaty; Windhariyati Dyah Kusumawanti

    2017-01-01

    Semesta Senior High School was chosen as the model school of the implementation of 2013 curriculum because it has emerged ICT to teaching learning process, teaching profession and school management. In addition, Semesta Foundation named Pasiad has collaborated with some public schools in Indonesia. The problems of this study are (a) how is the use of ICT in Semesta?; (b) how are the current, potential, and future issues of emerging ICT in education? The study objectives are (a) describing the...

  20. The “unknown” Greek paleoenvironment: Curriculum proposals through an ınfusion model for elementary school, using ammonite fossils

    OpenAIRE

    Stiliani Fragouli; Aggeliki Rokka

    2017-01-01

    In this study we introduce an infusion model to “inject” ammonites and ammonite fossils in current subjects of Greek primary curriculum. Paleontology and mainly fossils attract more and more elementary students and teachers, yet in Greece this trend is solely about dinosaurs, despite the fact that the most common Greek fossils are not dinosaurs, but ammonites. Ammonites can be found in large population and diversity inside Greek rocks, as these rocks were part of Tethys΄ seafloor at their geo...

  1. Liquid Rocket Engine Testing

    Science.gov (United States)

    2016-10-21

    and storable propellants • Liquid Oxygen (LOX) • RP-1 (Kerosene, very similar to JP-8) • Liquid Hydrogen • Liquid methane • Pressure = Performance in...booster rocket engines • 6000-10000 psia capabilities – Can use gaseous nitrogen, helium, or hydrogen to pressurize propellant tanks 9Distribution A...demonstrator of a Kerosene-LOX, 250,000 lbf, 3000 psi oxygen-rich staged combustion engine (ORSC) • AFRL’s Test Stand 2A recently completed a two-year

  2. Nuclear rocket propulsion

    International Nuclear Information System (INIS)

    Clark, J.S.; Miller, T.J.

    1991-01-01

    NASA has initiated planning for a technology development project for nuclear rocket propulsion systems for Space Exploration Initiative (SEI) human and robotic missions to the Moon and to Mars. An Interagency project is underway that includes the Department of Energy National Laboratories for nuclear technology development. This paper summarizes the activities of the project planning team in FY 1990 and FY 1991, discusses the progress to date, and reviews the project plan. Critical technology issues have been identified and include: nuclear fuel temperature, life, and reliability; nuclear system ground test; safety; autonomous system operation and health monitoring; minimum mass and high specific impulse

  3. Rocket Assembly and Checkout Facility

    Data.gov (United States)

    Federal Laboratory Consortium — FUNCTION: Integrates, tests, and calibrates scientific instruments flown on sounding rocket payloads. The scientific instruments are assembled on an optical bench;...

  4. From Model Rockets to Spacewalks: an Astronaut Physician’s Journey and the Science of the United States’ Space Program*

    OpenAIRE

    Parazynski, Scott E

    2006-01-01

    From simple childhood dreams to their fulfillment, this presentation chronicles the author’s life journey from young model rocketteer through his medical training and eventual career as a NASA astronaut. Over the course of four Space Shuttle flights and a cumulative 6 weeks in space, including 20 hours of Extravehicular Activity (EVA, or spacewalking), this article describes a wide range of activities and scientific payloads that are representative of the unique and valuable science that can ...

  5. Culture Matters in Successful Curriculum Change: An International Study of the Influence of National and Organizational Culture Tested With Multilevel Structural Equation Modeling.

    Science.gov (United States)

    Jippes, Mariëlle; Driessen, Erik W; Broers, Nick J; Majoor, Gerard D; Gijselaers, Wim H; van der Vleuten, Cees P M

    2015-07-01

    National culture has been shown to play a role in curriculum change in medical schools, and business literature has described a similar influence of organizational culture on change processes in organizations. This study investigated the impact of both national and organizational culture on successful curriculum change in medical schools internationally. The authors tested a literature-based conceptual model using multilevel structural equation modeling. For the operationalization of national and organizational culture, the authors used Hofstede's dimensions of culture and Quinn and Spreitzer's competing values framework, respectively. To operationalize successful curriculum change, the authors used two derivates: medical schools' organizational readiness for curriculum change developed by Jippes and colleagues, and change-related behavior developed by Herscovitch and Meyer. The authors administered a questionnaire in 2012 measuring the described operationalizations to medical schools in the process of changing their curriculum. Nine hundred ninety-one of 1,073 invited staff members from 131 of 345 medical schools in 56 of 80 countries completed the questionnaire. An initial poor fit of the model improved to a reasonable fit by two suggested modifications which seemed theoretically plausible. In sum, characteristics of national culture and organizational culture, such as a certain level of risk taking, flexible policies and procedures, and strong leadership, affected successful curriculum change. National and organizational culture influence readiness for change in medical schools. Therefore, medical schools considering curriculum reform should anticipate the potential impact of national and organizational culture.

  6. A Faculty Workshop Model to Integrate Climate Change across the Curriculum

    Science.gov (United States)

    Teranes, J. L.

    2017-12-01

    Much of the growing scientific certainty of human impacts on the climate system, and the implications of these impacts on current and future generations, have been discovered and documented in research labs in colleges and universities across the country. Often these institutions also take decisive action towards combatting climate change, by making significant reductions in greenhouse emissions and pledging to greater future reductions. Yet, there are still far too many students that graduate from these campuses without an adequate understanding of how climate change will impact them within their lifetimes and without adequate workforce preparation to implement solutions. It may be that where college and universities still have the largest influence on climate change adaption and mitigation is in the way that we educate students. Here I present a curriculum workshop model at UC San Diego that leverages faculty expertise to infuse climate change education across disciplines to enhance UC San Diego students' climate literacy, particularly for those students whose major focus is not in the geosciences. In this model, twenty faculty from a breadth of disciplines, including social sciences, humanities, arts, education, and natural sciences participated in workshops and developed curricula to infuse aspects of climate change into their existing undergraduate courses. We particularly encouraged development of climate change modules in courses in the humanities, social sciences and arts that are best positioned to address the important human and social dimensions of climate change. In this way, climate change content becomes embedded in current course offerings, including non-science courses, to increase climate literacy among a greater number and a broader cross-section of students.

  7. Integration of the Client Self-Care Commitment Model in a dental hygiene curriculum.

    Science.gov (United States)

    Miles, S S; Rogo, E J; Calley, K H; Hill, N R

    2014-11-01

    This exploratory study investigated whether integration of the Client Self-Care Commitment Model (CSCCM) Instructional Module in a dental hygiene curriculum, as an additional educational experience, would further enhance students' client-centred knowledge, values and actions. Subjects (n = 26) were second-year students enrolled in a BS entry-level dental hygiene programme with random assignments to two groups. The experimental group participated in a 2-h didactic session, an 8-h preclinical session, an 8-h clinical session and a 1-h question and answer period. An online pretest-post-test survey administered at three time intervals (baseline, 3 and 6 weeks) was used to measure differences between the groups on three subscales (knowledge, values and actions). Cronbach's α for each subscale across time was above 0.90. A repeated-measures anova determined that there were no statistically significant interactions between Time and Group (experimental or control group) for the knowledge and values variables; however, there was a significant interaction between Time (P = 0.003) and Group (P = 0.033) for the actions variable. A content analysis of participants' responses to three open-ended questions reflected both positive and negative comments and revealed that students' primary barrier to implementing the model in client care was lack of time. Significant differences in the actions variable between the groups suggested that implementation of the CSCCM Instructional Module enhanced students' client-centred actions during client care. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  8. A Model Curriculum for an Emergency Medical Services (EMS Rotation for Emergency Medicine Residents

    Directory of Open Access Journals (Sweden)

    Michael Mancera

    2018-01-01

    Full Text Available Audience: This EMS curriculum is designed for Emergency Medicine residents at all levels of training. Introduction: Emergency Medicine (EM physicians have routine interaction with Emergency Medical Services (EMS in their clinical practice. Additionally, the American College of Graduate Medical Education (ACGME mandates that all Emergency Medicine resident physicians receive specific training in the area of EMS.1 Historically, EMS training for EM residents has been conducted in the absence of a standardized didactic curriculum. Despite advancements in the area of prehospital training, there remains wide inconsistency in EMS training experiences among EM residency training programs.2 To our knowledge a standardized and reproducible EMS curriculum for EM residents does not exist. Objectives: The aim of this curriculum is to provide a robust learning experience for EM residents around prehospital care and EMS that fulfills the ACGME requirements and which can be easily replicated and implemented in a variety of EM residency training programs. Method: The educational strategies used in this curriculum include didactics, asynchronous learning through online modules and a focused reading list, experiential learning through ride-alongs, structured small group discussion, supervised medical command shifts, and mentored practice in organizing and delivering didactics to EMS providers.

  9. From Model Rockets to Spacewalks: an Astronaut Physician’s Journey and the Science of the United States’ Space Program*

    Science.gov (United States)

    Parazynski, Scott E

    2006-01-01

    From simple childhood dreams to their fulfillment, this presentation chronicles the author’s life journey from young model rocketteer through his medical training and eventual career as a NASA astronaut. Over the course of four Space Shuttle flights and a cumulative 6 weeks in space, including 20 hours of Extravehicular Activity (EVA, or spacewalking), this article describes a wide range of activities and scientific payloads that are representative of the unique and valuable science that can be accomplished in the microgravity of space. NASA’s efforts to develop inspection and repair capabilities in the aftermath of the Columbia tragedy are also covered, as are the nation’s plans for returning to the Moon and continuing on to Mars as part of the Vision for Space Exploration (VSE). PMID:18528479

  10. From model rockets to spacewalks: an astronaut physician's journey and the science of the United States' space program.

    Science.gov (United States)

    Parazynski, Scott E

    2006-01-01

    From simple childhood dreams to their fulfillment, this presentation chronicles the author's life journey from young model rocketteer through his medical training and eventual career as a NASA astronaut. Over the course of four Space Shuttle flights and a cumulative 6 weeks in space, including 20 hours of Extravehicular Activity (EVA, or spacewalking), this article describes a wide range of activities and scientific payloads that are representative of the unique and valuable science that can be accomplished in the microgravity of space. NASA's efforts to develop inspection and repair capabilities in the aftermath of the Columbia tragedy are also covered, as are the nation's plans for returning to the Moon and continuing on to Mars as part of the Vision for Space Exploration (VSE).

  11. ["Flipped classroom" teaching model into the curriculum of Theories of Different Schools of Acupuncture and Moxibustion:exploration and practice].

    Science.gov (United States)

    Liu, Mailan; Yuan, Yiqin; Chang, Xiaorong; Tang, Yulan; Luo, Jian; Li, Nan; Yu, Jie; Yang, Qianyun; Liu, Mi

    2016-08-12

    The "flipped classroom" teaching model practiced in the teaching of Theories of Different Schools of Acupuncture and Moxibustion curriculum was introduced. Firstly, the roles and responsibilities of teachers were clarified, indicating teachers provided examples and lectures, and a comprehensive assessment system was established. Secondly, the "flipped classroom" teaching model was split into online learning, classroom learning and offline learning. Online learning aimed at forming a study report by a wide search of relevant information, which was submitted to teachers for review and assessment. Classroom learning was designed to communicate study ideas among students and teachers. Offline learning was intended to revise and improve the study report and refined learning methods. Lastly, the teaching practice effects of "flip classroom" were evaluated by comprehensive rating and questionnaire assessment, which assessed the overall performance of students and overall levels of paper; the learning ability was enhanced, and the interest and motivation of learning were also improved. Therefore, "flipped classroom" teaching mode was suitable for the curriculum of Theories of Different Schools of Acupuncture and Moxibustion , and could be recommended into the teaching practice of related curriculum of acupuncture and tuina.

  12. Natural Frequency Testing and Model Correlation of Rocket Engine Structures in Liquid Hydrogen - Phase I, Cantilever Beam

    Science.gov (United States)

    Brown, Andrew M.; DeLessio, Jennifer L.; Jacobs, Preston W.

    2018-01-01

    Many structures in the launch vehicle industry operate in liquid hydrogen (LH2), from the hydrogen fuel tanks through the ducts and valves and into the pump sides of the turbopumps. Calculating the structural dynamic response of these structures is critical for successful qualification of this hardware, but accurate knowledge of the natural frequencies is based entirely on numerical or analytical predictions of frequency reduction due to the added-fluid-mass effect because testing in LH2 has always been considered too difficult and dangerous. This fluid effect is predicted to be approximately 4-5% using analytical formulations for simple cantilever beams. As part of a comprehensive test/analysis program to more accurately assess pump inducers operating in LH2, a series of frequency tests in LH2 were performed at NASA/Marshall Space Flight Center's unique cryogenic test facility. These frequency tests are coupled with modal tests in air and water to provide critical information not only on the mass effect of LH2, but also the cryogenic temperature effect on Young's Modulus for which the data is not extensive. The authors are unaware of any other reported natural frequency testing in this media. In addition to the inducer, a simple cantilever beam was also tested in the tank to provide a more easily modeled geometry as well as one that has an analytical solution for the mass effect. This data will prove critical for accurate structural dynamic analysis of these structures, which operate in a highly-dynamic environment.

  13. Scaled Rocket Testing in Hypersonic Flow

    Science.gov (United States)

    Dufrene, Aaron; MacLean, Matthew; Carr, Zakary; Parker, Ron; Holden, Michael; Mehta, Manish

    2015-01-01

    NASA's Space Launch System (SLS) uses four clustered liquid rocket engines along with two solid rocket boosters. The interaction between all six rocket exhaust plumes will produce a complex and severe thermal environment in the base of the vehicle. This work focuses on a recent 2% scale, hot-fire SLS base heating test. These base heating tests are short-duration tests executed with chamber pressures near the full-scale values with gaseous hydrogen/oxygen engines and RSRMV analogous solid propellant motors. The LENS II shock tunnel/Ludwieg tube tunnel was used at or near flight duplicated conditions up to Mach 5. Model development was strongly based on the Space Shuttle base heating tests with several improvements including doubling of the maximum chamber pressures and duplication of freestream conditions. Detailed base heating results are outside of the scope of the current work, rather test methodology and techniques are presented along with broader applicability toward scaled rocket testing in supersonic and hypersonic flow.

  14. Emerging identities: A proposed model for an interactive science curriculum for First Nations students

    Science.gov (United States)

    Sable, Trudy

    including language itself This identity is based on personal, cultural, historical and social factors that come to bear on each student's definition of who they are and what knowledge is pertinent to survival and well being. Five fundamental themes emerged from the interviews and field trips---fragile ontologies, multiple layers of identity (personal, cultural, pan-tribal, and societal), border crossings, the continuing and emerging aspects of culture, and beyond borders to a spiritual narrative---and became the foundation for a culturally interactive science education model of learning. The model assists educators through a visualization of layers of identity, porous borders and seeming paradoxes, and "narrative unity" beyond boundaries---all of which affect the learning of science. The content of a culturally interactive curriculum is drawn from the cultural heritage of the students, giving them an historical context with which to identify. Working with Mi'kmaw language and notational representation is shown to assist educators in cultural border crossing and creating cultural continuity for the students. Taken into the classroom, this interactive paradigm could be adapted to pedagogical methods as "speaking together" times, in which students explore the processes of doing science while appreciating their own cultural traditions. In so doing, educators can come to know the larger narrative that gives shape to student's identities and ways of relating to the world. Then it becomes possible for educators to recognize the boundaries that obstruct or open a path to meaningful learning experiences.

  15. International Federation for Emergency Medicine Model Curriculum for Emergency Medicine Specialists.

    Science.gov (United States)

    Hobgood, Cherri; Anantharaman, Venkataraman; Bandiera, Glen; Cameron, Peter; Halpern, Pinchas; Holliman, C James; Jouriles, Nicholas; Kilroy, Darren; Mulligan, Terrence; Singer, Andrew

    2011-10-01

    To meet a critical and growing need for emergency physicians and emergency medicine resources worldwide, physicians must be trained to deliver time-sensitive interventions and lifesaving emergency care. Currently, there is no globally recognized, standard curriculum that defines the basic minimum standards for specialist trainees in emergency medicine. To address this deficit, the International Federation for Emergency Medicine convened a committee of international physicians, health professionals and other experts in emergency medicine and international emergency medicine development to outline a curriculum for training of specialists in emergency medicine. This curriculum document represents the consensus of recommendations by this committee. The curriculum is designed to provide a framework for educational programmes in emergency medicine. The focus is on the basic minimum emergency medicine educational content that any emergency medicine physician specialist should be prepared to deliver on completion of a training programme. It is designed not to be prescriptive but to assist educators and emergency medicine leadership to advance physician education in basic emergency medicine no matter the training venue. The content of this curriculum is relevant not just for communities with mature emergency medicine systems, but in particular for developing nations or for nations seeking to expand emergency medicine within the current educational structure. We anticipate that there will be wide variability in how this curriculum is implemented and taught. This variability will reflect the existing educational milieu, the resources available, and the goals of the institutions' educational leadership with regard to the training of emergency medicine specialists. © 2011 The Authors. EMA © 2011 Australasian College for Emergency Medicine and Australasian Society for Emergency Medicine.

  16. Assessing the Effects of the "Rocket Math" Program with a Primary Elementary School Student at Risk for School Failure: A Case Study

    Science.gov (United States)

    Smith, Christina R.; Marchand-Martella, Nancy E.; Martella, Ronald C.

    2011-01-01

    This study assessed the effects of the "Rocket Math" program on the math fluency skills of a first grade student at risk for school failure. The student received instruction in the "Rocket Math" program over 6 months. He was assessed using a pre- and posttest curriculum-based measurement (CBM) and individualized fluency checkouts within the…

  17. Nuclear Rocket Engine Reactor

    CERN Document Server

    Lanin, Anatoly

    2013-01-01

    The development of a nuclear rocket engine reactor (NRER ) is presented in this book. The working capacity of an active zone NRER under mechanical and thermal load, intensive neutron fluxes, high energy generation (up to 30 MBT/l) in a working medium (hydrogen) at temperatures up to 3100 K is displayed. Design principles and bearing capacity of reactors area discussed on the basis of simulation experiments and test data of a prototype reactor. Property data of dense constructional, porous thermal insulating and fuel materials like carbide and uranium carbide compounds in the temperatures interval 300 - 3000 K are presented. Technological aspects of strength and thermal strength resistance of materials are considered. The design procedure of possible emergency processes in the NRER is developed and risks for their origination are evaluated. Prospects of the NRER development for pilotless space devices and piloted interplanetary ships are viewed.

  18. Experimental investigation of solid rocket motors for small sounding rockets

    Science.gov (United States)

    Suksila, Thada

    2018-01-01

    Experimentation and research of solid rocket motors are important subjects for aerospace engineering students. However, many institutes in Thailand rarely include experiments on solid rocket motors in research projects of aerospace engineering students, mainly because of the complexity of mixing the explosive propellants. This paper focuses on the design and construction of a solid rocket motor for total impulse in the class I-J that can be utilised as a small sounding rocket by researchers in the near future. Initially, the test stands intended for measuring the pressure in the combustion chamber and the thrust of the solid rocket motor were designed and constructed. The basic design of the propellant configuration was evaluated. Several formulas and ratios of solid propellants were compared for achieving the maximum thrust. The convenience of manufacturing and casting of the fabricated solid rocket motors were a critical consideration. The motor structural analysis such as the combustion chamber wall thickness was also discussed. Several types of nozzles were compared and evaluated for ensuring the maximum thrust of the solid rocket motors during the experiments. The theory of heat transfer analysis in the combustion chamber was discussed and compared with the experimental data.

  19. Integrating critical thinking and evidence-based dentistry across a four-year dental curriculum: a model for independent learning.

    Science.gov (United States)

    Marshall, Teresa A; Straub-Morarend, Cheryl L; Handoo, Nidhi; Solow, Catherine M; Cunningham-Ford, Marsha A; Finkelstein, Michael W

    2014-03-01

    Introducing critical thinking and evidence-based dentistry (EBD) content into an established dental curriculum can be a difficult and challenging process. Over the past three years, the University of Iowa College of Dentistry has developed and implemented a progressive four-year integrated critical thinking and EBD curriculum. The objective of this article is to describe the development and implementation process to make it available as a model for other dental schools contemplating introduction of critical thinking and EBD into their curricula. The newly designed curriculum built upon an existing problem-based learning foundation, which introduces critical thinking and the scientific literature in the D1 year, in order to expose students to the rationale and resources for practicing EBD in the D2 and D3 years and provide opportunities to practice critical thinking and apply the EBD five-step process in the D2, D3, and D4 years. All curricular content is online, and D3 and D4 EBD activities are integrated within existing clinical responsibilities. The curricular content, student resources, and student activities are described.

  20. NASA Sounding Rocket Program Educational Outreach

    Science.gov (United States)

    Rosanova, G.

    2013-01-01

    Educational and public outreach is a major focus area for the National Aeronautics and Space Administration (NASA). The NASA Sounding Rocket Program (NSRP) shares in the belief that NASA plays a unique and vital role in inspiring future generations to pursue careers in science, mathematics, and technology. To fulfill this vision, the NSRP engages in a variety of educator training workshops and student flight projects that provide unique and exciting hands-on rocketry and space flight experiences. Specifically, the Wallops Rocket Academy for Teachers and Students (WRATS) is a one-week tutorial laboratory experience for high school teachers to learn the basics of rocketry, as well as build an instrumented model rocket for launch and data processing. The teachers are thus armed with the knowledge and experience to subsequently inspire the students at their home institution. Additionally, the NSRP has partnered with the Colorado Space Grant Consortium (COSGC) to provide a "pipeline" of space flight opportunities to university students and professors. Participants begin by enrolling in the RockOn! Workshop, which guides fledgling rocketeers through the construction and functional testing of an instrumentation kit. This is then integrated into a sealed canister and flown on a sounding rocket payload, which is recovered for the students to retrieve and process their data post flight. The next step in the "pipeline" involves unique, user-defined RockSat-C experiments in a sealed canister that allow participants more independence in developing, constructing, and testing spaceflight hardware. These experiments are flown and recovered on the same payload as the RockOn! Workshop kits. Ultimately, the "pipeline" culminates in the development of an advanced, user-defined RockSat-X experiment that is flown on a payload which provides full exposure to the space environment (not in a sealed canister), and includes telemetry and attitude control capability. The RockOn! and Rock

  1. Development of a subspecialty cardiology curriculum for paediatric registrars in Malawi: Implementation of a long-distance hybrid model.

    Science.gov (United States)

    Newberry, Laura; Kennedy, Neil; Greene, Elizabeth A

    2016-06-01

    Malawi has a high burden of paediatric cardiac disease but a limited number of health providers familiar with these chronic diseases. Given the rising number of Malawian postgraduate paediatric trainees at the University of Malawi College of Medicine, we sought to remedy this lack of basic cardiology training with a long-distance, module-based curriculum that could be utilised independently, as needed, with on-site teaching. We also wished to evaluate the initial modules for utility and improvement in knowledge and confidence in each topic. After an initial site visit to determine curriculum needs, online modules with interactive evaluations and quizzes were developed by a paediatric cardiologist in the United States, in collaboration with paediatric registrar training directors in Malawi. This online interactive curriculum was followed by several site visits to Malawi, by the United States-based paediatric cardiologist, to provide bedside teaching, case-based discussions and hands-on skill training in cardiac ultrasound and electrocardiogram interpretation. Evaluation of the curriculum model included post-module quizzes on cardiac topics as well as registrar self-assessments regarding confidence in content areas. The average post-module quiz score was 93.6%. Repeat testing with the same questions four months later yielded an average score of 78%, with a range from 60 to 100%. Pre- and post-module registrar self-assessment regarding confidence in content areas showed a substantial gain in knowledge and confidence mean. In their qualitative feedback, registrars noted that the modules were helpful in studying for their certifying examinations, and all four of the registrars sitting Part I of their Malawian and South African paediatric certifying examinations passed. Our innovative hybrid approach, combining online educational modules with in-person teaching visits, is a useful approach in expanding paediatric cardiology subspecialty education in Malawi.

  2. A Curriculum Development Model Based on Deforestation and the Work of Kafka.

    Science.gov (United States)

    Kember, David

    1991-01-01

    A tongue-in-cheek look at methods used for curriculum development by many colleges and universities compares the process to two others: destruction of trees and trial by ordeal. Forests are destroyed to produce large quantities of paper for printing of curricula in many versions, followed by Kafkaesque committee scrutiny. (MSE)

  3. A Report of the School Health Education Curriculum Project, Wichita Model. 1974-75.

    Science.gov (United States)

    Moore, Terry E.; Makalous, Don L.

    This report discusses the genesis, imblementation, and evaluation of the Wichita, Kansas, School Health Education Curriculum Project, instructinq fifth-, sixth-, seventh-, and eighth-grade public school students in units on the lung and respiratory system, the heart and circulatory system, and the brain and central nervous system. Developed from…

  4. Analysis of High School English Curriculum Materials through Rasch Measurement Model and Maxqda

    Science.gov (United States)

    Batdi, Veli; Elaldi, Senel

    2016-01-01

    The purpose of the study is to analyze high school English curriculum materials (ECM) through FACETS analysis and MAXQDA-11 programs. The mixed methods approach, both quantitative and qualitative methods, were used in three samples including English teachers in Elazig during the 2014-2015 academic year. While the quantitative phase of the study…

  5. A Model for Infusing Energy Concepts into Vocational Education Programs. Solar Energy Curriculum Guide.

    Science.gov (United States)

    Delta Vocational Technical School, Marked Tree, AR.

    This solar energy curriculum guide is designed to assist teachers in infusing energy concepts into vocational education programs. It consists of 31 competency-based instructional units organized into 10 sections. Covered in the sections are the following topics: related instructions (history and development; human relations; general safety;…

  6. Use of Integrated Curriculum Model (ICM) in Social Studies: Gifted and Talented Students' Conceptions

    Science.gov (United States)

    Kahveci, Nihat Gürel; Atalay, Özlem

    2015-01-01

    Problem Statement: There have been several studies that have investigated curricular interventions for gifted students to address their educational needs. For most courses and disciplines, a standard curriculum may not be sufficient for the majority of gifted students. Here, among other curricular efforts in the education of the gifted, an…

  7. Dynamic Analysis of Sounding Rocket Pneumatic System Revision

    Science.gov (United States)

    Armen, Jerald

    2010-01-01

    The recent fusion of decades of advancements in mathematical models, numerical algorithms and curve fitting techniques marked the beginning of a new era in the science of simulation. It is becoming indispensable to the study of rockets and aerospace analysis. In pneumatic system, which is the main focus of this paper, particular emphasis will be placed on the efforts of compressible flow in Attitude Control System of sounding rocket.

  8. Implementing a Course Review Process for a Continuous Quality Improvement Model for a Medical School Curriculum.

    Science.gov (United States)

    Ward, Cassandra S; Andrade, Amy; Walker-Winfree, Lena

    2018-01-01

    In 1901, Abraham Flexner, a research scholar at the Carnegie Foundation for the Advancement of Teaching, visited 155 medical schools in the United States and Canada to assess medical education. Flexner's recommendations became the foundation for the Liaison Committee on Medical Education accreditation, a voluntary, peer-reviewed quality assurance process to determine whether a medical education program meets established standards. The Meharry Medical College School of Medicine, a historically Black college/university (HBCU) established the Office of Curriculum Evaluation and Effectiveness in 2013 to ensure the consistent monitoring of the medical education program's compliance with accreditation standards. The motto and logo, LCME 24/7, highlight the school's emphasis on meeting accreditation standards. The school uses the 1994 Plan-Do-Study-Act Cycle for Learning and Improvement for continuous review of course content, outcomes, and evaluations. This process identifies strengths, challenges, and opportunities for innovative steps for continuous quality improvements to the curriculum.

  9. Not just rocket science

    Energy Technology Data Exchange (ETDEWEB)

    MacAdam, S.; Anderson, R. [Celan Energy Systems, Rancho Cordova, CA (United States)

    2007-10-15

    The paper explains a different take on oxyfuel combustion. Clean Energy Systems (CES) has integrated aerospace technology into conventional power systems, creating a zero-emission power generation technology that has some advantages over other similar approaches. When using coal as a feedstock, the CES process burns syngas rather than raw coal. The process uses recycled water and steam to moderate the temperature, instead of recycled CO{sub 2}. With no air ingress, the CES process produces very pure CO{sub 2}. This makes it possible to capture over 99% of the CO{sub 2} resulting from combustion. CES uses the combustion products to drive the turbines, rather than indirectly raising steam for steam turbines, as in the oxyfuel process used by companies such as Vattenfall. The core of the process is a high-pressure oxy-combustor adapted from rocket engine technology. This combustor burns gaseous or liquid fuels with gaseous oxygen in the presence of water. Fuels include natural gas, coal or coke-derived synthesis gas, landfill and biodigester gases, glycerine solutions and oil/water emulsion. 2 figs.

  10. THE EFFECTIVENESS OF MACROS-BASED COGNITIVE DOMAIN EVALUATION MODEL IN SENIOR HIGH SCHOOL BASED ON THE CURRICULUM 2013

    Directory of Open Access Journals (Sweden)

    Djoko Purnomo

    2016-10-01

    Full Text Available The particular objective of this study was to investigate the effectiveness of implementation of learning device in the form of macros-based cognitive domain evaluation model via E-learning applied at 10th grade of senior high school in the odd semester based on the curriculum 2013. The method of this study followed the procedures of R & D (Research & Development developed by Borg and Gall. The results of the research and application development of macros-based evaluation model are effective which can be seen from (1 the results of students’ mastery learning, (2 students’ independence gives positive effect on learning outcomes, (3 the learning results of students who used macros-based learning evaluation model of cognitive domain are better rather than those in control class. Based on the above results, it can be concluded that macros-based learning evaluation model of cognitive domain tested has met the quality standards.

  11. Easier Analysis With Rocket Science

    Science.gov (United States)

    2003-01-01

    Analyzing rocket engines is one of Marshall Space Flight Center's specialties. When Marshall engineers lacked a software program flexible enough to meet their needs for analyzing rocket engine fluid flow, they overcame the challenge by inventing the Generalized Fluid System Simulation Program (GFSSP), which was named the co-winner of the NASA Software of the Year award in 2001. This paper describes the GFSSP in a wide variety of applications

  12. Infrasound from the 2009 and 2017 DPRK rocket launches

    Science.gov (United States)

    Evers, L. G.; Assink, J. D.; Smets, P. S. M.

    2018-03-01

    Supersonic rockets generate low-frequency acoustic waves, i.e., infrasound, during the launch and re-entry. Infrasound is routinely observed at infrasound arrays from the International Monitoring System, in place for the verification of the Comprehensive Nuclear-Test-Ban Treaty. Association and source identification are key elements of the verification system. The moving nature of a rocket is a defining criterion, in order to distinguish it from an isolated explosion. Here, it is shown how infrasound recordings can be associated, which leads to identification of the rocket. Propagation modeling is included to further constrain the source identification. Four rocket launches by the Democratic People's Republic of Korea in 2009 and 2017 are analyzed, in which multiple arrays detected the infrasound. Source identification in this region is important for verification purposes. It is concluded that with a passive monitoring technique such as infrasound, characteristics can be remotely obtained on sources of interest, i.e., infrasonic intelligence, over 4500+ km.

  13. The “unknown” Greek paleoenvironment: Curriculum proposals through an ınfusion model for elementary school, using ammonite fossils

    Directory of Open Access Journals (Sweden)

    Stiliani Fragouli

    2017-06-01

    Full Text Available In this study we introduce an infusion model to “inject” ammonites and ammonite fossils in current subjects of Greek primary curriculum. Paleontology and mainly fossils attract more and more elementary students and teachers, yet in Greece this trend is solely about dinosaurs, despite the fact that the most common Greek fossils are not dinosaurs, but ammonites. Ammonites can be found in large population and diversity inside Greek rocks, as these rocks were part of Tethys΄ seafloor at their geological time. Apart from the informal sources of education, these science topics are excluded from elementary national curriculum, and leave the regional paleoenvironment and geological history practically “unknown” to students. Data collected through a pre-test study, in 558 students of 4th, 5th, and 6th grade confirmed the above belief. A post-test at the original sample, using an open ended questionnaire and students’ drawings, evaluated positively the infusion teaching model, whose core were the ammonite fossils.

  14. The “unknown” Greek Paleoenvironment: Curriculum Proposals through an Infusion Model for Elementary School, Using Ammonite Fossils

    Directory of Open Access Journals (Sweden)

    Stiliani FRAGOULI

    2017-06-01

    Full Text Available In this study we introduce an infusion model to “inject” ammonites and ammonite fossils in current subjects of Greek primary curriculum. Paleontology and mainly fossils attract more and more elementary students and teachers, yet in Greece this trend is solely about dinosaurs, despite the fact that the most common Greek fossils are not dinosaurs, but ammonites. Ammonites can be found in large population and diversity inside Greek rocks, as these rocks were part of Tethys΄ seafloor at their geological time. Apart from the informal sources of education, these science topics are excluded from elementary national curriculum, and leave the regional paleoenvironment and geological history practically “unknown” to students. Data collected through a pre-test study, in 558 students of 4th, 5th, and 6th grade confirmed the above belief. A post-test at the original sample, using an open ended questionnaire and students’ drawings, evaluated positively the infusion teaching model, whose core were the ammonite fossils.

  15. Content and face validation of a curriculum for ultrasonic propulsion of calculi in a human renal model.

    Science.gov (United States)

    Hsi, Ryan S; Dunmire, Barbrina; Cunitz, Bryan W; He, Xuemei; Sorensen, Mathew D; Harper, Jonathan D; Bailey, Michael R; Lendvay, Thomas S

    2014-04-01

    Ultrasonic propulsion to reposition urinary tract calculi requires knowledge about ultrasound image capture, device manipulation, and interpretation. The purpose of this study was to validate a cognitive and technical skills curriculum to teach urologists ultrasonic propulsion to reposition kidney stones in tissue phantoms. Ten board-certified urologists recruited from a single institution underwent a didactic session on renal ultrasound imaging. Subjects completed technical skills modules in tissue phantoms, including kidney imaging, pushing a stone through a translucent maze, and repositioning a lower pole calyceal stone. Objective cognitive and technical performance metrics were recorded. Subjects completed a questionnaire to ascertain face and content validity on a five-point Likert scale. Eight urologists (80%) had never attended a previous ultrasound course, and nine (90%) performed renal ultrasounds less frequently than every 6 months. Mean cognitive skills scores improved from 55% to 91% (pdidactic tests. In the kidney phantom, 10 subjects (100%) repositioned the lower pole calyceal stone to at least the lower pole infundibulum, while 9 (90%) successfully repositioned the stone to the renal pelvis. A mean±SD (15.7±13.3) pushes were required to complete the task over an average of 4.6±2.2 minutes. Urologists rated the curriculum's effectiveness and realism as a training tool at a mean score of 4.6/5.0 and 4.1/5.0, respectively. The curriculum for ultrasonic propulsion is effective and useful for training urologists with limited ultrasound proficiency in stone repositioning technique. Further studies in animate and human models will be required to assess predictive validity.

  16. The Influence of Curriculum, Instruction, Technology, and Social Interactions on Two Fifth-Grade Students' Epistemologies in Modeling throughout a Model-Based Curriculum Unit

    Science.gov (United States)

    Baek, Hamin; Schwarz, Christina V.

    2015-01-01

    In the past decade, reform efforts in science education have increasingly attended to engaging students in scientific practices such as scientific modeling. Engaging students in scientific modeling can help them develop their epistemologies by allowing them to attend to the roles of mechanism and empirical evidence when constructing and revising…

  17. Teacher learning in collaborative curriculum design

    NARCIS (Netherlands)

    Bregje de Vries; J. Voogt; A. Walraven; J. Pieters; A. Handelzalts; S. McKenney; H. Westbroek

    2011-01-01

    The Interconnected Model of Professional Growth (Clarke & Hollingsworth, 2002) was used to identify processes of teacher learning during the collaborative design of curriculum materials in the context of curriculum innovation. Nine published studies from six different countries about teachers’

  18. Teacher learning in collaborative curriculum design

    NARCIS (Netherlands)

    Voogt, J.; Westbroek, H.B.; Handelzalts, A.; Walraven, A.; McKenney, S.; Pieters, J.M.; de Vries, B.

    2011-01-01

    The Interconnected Model of Professional Growth (Clarke & Hollingsworth, 2002) was used to identify processes of teacher learning during the collaborative design of curriculum materials in the context of curriculum innovation. Nine published studies from six different countries about teachers'

  19. Using a Systematic Conceptual Model for a Process Evaluation of a Middle School Obesity Risk-Reduction Nutrition Curriculum Intervention: "Choice, Control & Change"

    Science.gov (United States)

    Lee, Heewon; Contento, Isobel R.; Koch, Pamela

    2013-01-01

    Objective: To use and review a conceptual model of process evaluation and to examine the implementation of a nutrition education curriculum, "Choice, Control & Change", designed to promote dietary and physical activity behaviors that reduce obesity risk. Design: A process evaluation study based on a systematic conceptual model. Setting: Five…

  20. Evaluation of how a curriculum change in nurse education was managed through the application of a business change management model: A qualitative case study.

    Science.gov (United States)

    Chowthi-Williams, Annette; Curzio, Joan; Lerman, Stephen

    2016-01-01

    Curriculum changes are a regular feature of nurse education, yet little is known about how such changes are managed. Research in this arena is yet to emerge. Evaluation of how a curriculum change in nurse education was managed through the application of a business change management model. A qualitative case study: the single case was the new curriculum, the Primary Care Pathway. One executive, three senior managers, two academics and nineteen students participated in this study in one faculty of health and social care in a higher education institution. The findings suggest that leadership was pivotal to the inception of the programme and guiding teams managed the change and did not take on a leadership role. The vision for the change and efforts to communicate it did not reach the frontline. Whilst empowerment was high amongst stakeholders and students, academics felt dis-empowered. Short-term wins were not significant in keeping up the momentum of change. The credibility of the change was under challenge and the concept of the new programme was not yet embedded in academia. Differences between the strategic and operational part of the organisation surfaced with many challenges occurring at the implementation stage. The business change model used was valuable, but was found to not be applicable during curriculum changes in nurse education. A new change model emerged, and a tool was developed alongside to aid future curriculum changes. Copyright © 2015 Elsevier Ltd. All rights reserved.

  1. The entomologist as a science partner and curriculum advisor: The Earth School model for grades 6--8

    Science.gov (United States)

    Marshall, Bethany Johnston

    The Earth School model for creation of partnerships between university scientists and public schools began with a traditional research project involving the study of macroinvertebrate recolonization of agriculturally based restored wetlands. From fieldwork designed to address hypotheses of community composition over time, protocols and equipment evolved for application in middle-school classrooms. In addition to classroom teachers guiding their students in replicating active scientific research, the inclusion of a science partner was key to the success of this model. To ensure that the classroom teachers were themselves comfortable as researchers, monthly staff development workshops were conducted as a component of the Earth School model. The use of entomology as a unifying theme for educational scientific investigation lets the student explore virtually every other system in the biosphere. Because of the unparalleled survivability and adaptability of insects, we can find examples from all biomes, all time references and all disciplines. Over the course of long-term continuous exploration, learners become familiar with relationships and patterns evident in natural situations. These same patterns of birth, growth and decay are much more vividly demonstrated in the field than in textbooks. Similarly, concrete examples of feeding relationships between organisms are plentiful in nearly any outdoor situation. The following model incorporates current research from multiple scientific disciplines but focuses on the many and varied research activities offered by the entomological community. Teachers and students in a primarily urban setting made extensive use of the materials developed through the course of this model's development. Their feedback as the materials were integrated into an established curriculum allowed for the fine-tuning of activity development. A conversion template has evolved that gives teachers, curriculum directors, parents and other educators a

  2. Reproductive Science for High School Students: A Shared Curriculum Model to Enhance Student Success.

    Science.gov (United States)

    Castle, Megan; Cleveland, Charlotte; Gordon, Diana; Jones, Lynda; Zelinski, Mary; Winter, Patricia; Chang, Jeffrey; Senegar-Mitchell, Ericka; Coutifaris, Christos; Shuda, Jamie; Mainigi, Monica; Bartolomei, Marisa; Woodruff, Teresa K

    2016-07-01

    The lack of a national reproductive biology curriculum leads to critical knowledge gaps in today's high school students' comprehensive understanding of human biology. The Oncofertility Consortium developed curricula that address the basic and clinical aspects of reproductive biology. Launching this academy and creating easy-to-disseminate learning modules allowed other universities to implement similar programs across the country. The expansion of this informal, extracurricular academy on reproductive health from Northwestern University to the University of California, San Diego, Oregon Health & Science University, and the University of Pennsylvania magnifies the scope of scientific learning to students who might not otherwise be exposed to this important information. To assess the experience gained from this curriculum, we polled alumni from the four centers. Data were collected anonymously from de-identified users who elected to self-report on their experiences in their respective reproductive science academy. The alumni survey asked participants to report on their current academic standing, past experiences in the academy, and future academic and career goals. The results of this national survey suggest the national oncofertility academies had a lasting impact on participants and may have contributed to student persistence in scientific learning. © 2016 by the Society for the Study of Reproduction, Inc.

  3. Model curriculum outline for Alternatively Fueled Vehicle (AFV) automotive technician training in light and medium duty CNG and LPG

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-04-01

    This model curriculum outline was developed using a turbo-DACUM (Developing a Curriculum) process which utilizes practicing experts to undertake a comprehensive job and task analysis. The job and task analysis serves to establish current baseline data accurately and to improve both the process and the product of the job through constant and continuous improvement of training. The DACUM process is based on the following assumptions: (1) Expert workers are the best source for task analysis. (2) Any occupation can be described effectively in terms of tasks. (3) All tasks imply knowledge, skills, and attitudes/values. A DACUM panel, comprised of six experienced and knowledgeable technicians who are presently working in the field, was given an orientation to the DACUM process. The panel then identified, verified, and sequenced all the necessary job duty areas and tasks. The broad duty categories were rated according to relative importance and assigned percentage ratings in priority order. The panel then rated every task for each of the duties on a scale of 1 to 3. A rating of 3 indicates an {open_quotes}essential{close_quotes} task, a rating of 2 indicates an {open_quotes}important{close_quotes} task, and a rating of 1 indicates a {open_quotes}desirable{close_quotes} task.

  4. Yes--This is Rocket Science: MMCs for Liquid Rocket Engines

    National Research Council Canada - National Science Library

    Shelley, J

    2001-01-01

    The Air Force's Integrated High-Payoff Rocket Propulsion Technologies (IHPRPT) Program has established aggressive goals for both improved performance and reduced cost of rocket engines and components...

  5. Rocket Science 101 Interactive Educational Program

    Science.gov (United States)

    Armstrong, Dennis; Funkhouse, Deborah; DiMarzio, Donald

    2007-01-01

    To better educate the public on the basic design of NASA s current mission rockets, Rocket Science 101 software has been developed as an interactive program designed to retain a user s attention and to teach about basic rocket parts. This program also has helped to expand NASA's presence on the Web regarding educating the public about the Agency s goals and accomplishments. The software was designed using Macromedia s Flash 8. It allows the user to select which type of rocket they want to learn about, interact with the basic parts, assemble the parts to create the whole rocket, and then review the basic flight profile of the rocket they have built.

  6. Rocket Science at the Nanoscale.

    Science.gov (United States)

    Li, Jinxing; Rozen, Isaac; Wang, Joseph

    2016-06-28

    Autonomous propulsion at the nanoscale represents one of the most challenging and demanding goals in nanotechnology. Over the past decade, numerous important advances in nanotechnology and material science have contributed to the creation of powerful self-propelled micro/nanomotors. In particular, micro- and nanoscale rockets (MNRs) offer impressive capabilities, including remarkable speeds, large cargo-towing forces, precise motion controls, and dynamic self-assembly, which have paved the way for designing multifunctional and intelligent nanoscale machines. These multipurpose nanoscale shuttles can propel and function in complex real-life media, actively transporting and releasing therapeutic payloads and remediation agents for diverse biomedical and environmental applications. This review discusses the challenges of designing efficient MNRs and presents an overview of their propulsion behavior, fabrication methods, potential rocket fuels, navigation strategies, practical applications, and the future prospects of rocket science and technology at the nanoscale.

  7. Nuclear Thermal Rocket Simulation in NPSS

    Science.gov (United States)

    Belair, Michael L.; Sarmiento, Charles J.; Lavelle, Thomas M.

    2013-01-01

    Four nuclear thermal rocket (NTR) models have been created in the Numerical Propulsion System Simulation (NPSS) framework. The models are divided into two categories. One set is based upon the ZrC-graphite composite fuel element and tie tube-style reactor developed during the Nuclear Engine for Rocket Vehicle Application (NERVA) project in the late 1960s and early 1970s. The other reactor set is based upon a W-UO2 ceramic-metallic (CERMET) fuel element. Within each category, a small and a large thrust engine are modeled. The small engine models utilize RL-10 turbomachinery performance maps and have a thrust of approximately 33.4 kN (7,500 lbf ). The large engine models utilize scaled RL-60 turbomachinery performance maps and have a thrust of approximately 111.2 kN (25,000 lbf ). Power deposition profiles for each reactor were obtained from a detailed Monte Carlo N-Particle (MCNP5) model of the reactor cores. Performance factors such as thermodynamic state points, thrust, specific impulse, reactor power level, and maximum fuel temperature are analyzed for each engine design.

  8. Simulation of Rocket-Grade Kerosene Flowing in an Electrically Heated Experimental Apparatus

    Science.gov (United States)

    2015-07-01

    Technical Paper 3. DATES COVERED (From - To) July 2015-July 2015 4. TITLE AND SUBTITLE Simulation of Rocket Kerosene Flowing in an Electrically Heated...rocket-grade kerosene (RP-2) flowing in an electrically heated tube is simulated. The model and boundary conditions are selected so as to simulate an...and Astronautics 1 Simulation of Rocket-Grade Kerosene Flowing in an Electrically Heated Experimental Apparatus Ananda Himansu1 and Matthew C

  9. Test Report for MSFC Test No. 83-2: Pressure scaled water impact test of a 12.5 inch diameter model of the Space Shuttle solid rocket booster filament wound case and external TVC PCD

    Science.gov (United States)

    1983-01-01

    Water impact tests using a 12.5 inch diameter model representing a 8.56 percent scale of the Space Shuttle Solid Rocket Booster configuration were conducted. The two primary objectives of this SRB scale model water impact test program were: 1. Obtain cavity collapse applied pressure distributions for the 8.56 percent rigid body scale model FWC pressure magnitudes as a function of full-scale initial impact conditions at vertical velocities from 65 to 85 ft/sec, horizontal velocities from 0 to 45 ft/sec, and angles from -10 to +10 degrees. 2. Obtain rigid body applied pressures on the TVC pod and aft skirt internal stiffener rings at initial impact and cavity collapse loading events. In addition, nozzle loads were measured. Full scale vertical velocities of 65 to 85 ft/sec, horizontal velocities of 0 to 45 ft/sec, and impact angles from -10 to +10 degrees simulated.

  10. A Model CSMH Curriculum for Child and Adolescent Psychiatry Training Programs.

    Science.gov (United States)

    Derenne, Jennifer; Martel, Adele

    2015-10-01

    Child and adolescent psychiatrists (CAP) care for high school students preparing to enter college. They also may continue to see students while on school vacations and may care for college students in various settings (emergency room, inpatient hospital unit, private practice, college student health service, or counseling center). As increasing numbers of students with mental health diagnoses pursue secondary education, CAP need to be knowledgeable about campus systems of care, principles of transition, and privacy and educational laws affecting college students. This article describes an informal needs assessment of general CAP members of the American Academy of Child and Adolescent Psychiatry and details the results of a survey of CAP program directors on training opportunities in college student mental health (CSMH). The authors present a sample curriculum for a clinical rotation in CSMH, as well as providing ideas for core didactic lectures, and proposing the development of online resources to reduce the burden of creating new lectures and standardize experiences among training programs.

  11. Study of Locality and “Citizenship”: an analysis of the Geography National Curriculum Model official discourse

    Directory of Open Access Journals (Sweden)

    João Pedro Pezzato

    2007-06-01

    Full Text Available The official discourse reported by the National Curriculum Model, especially that on geography, has incorporated several terms and expressions currently used in academic discourse. Such incorporation might indicate updating and commitment to current and theoretical regulations; however, it demands special attention. The terms “teaching democratization” or “educating for citizenship” are reported in official documents as having the same meaning; they should be better explained. Once they are widely broadcast, new concepts, codes, and expressions have become central elements of pedagogical discourses. Therefore, educational agents should do a more thorough and detailed analysis of the terms mentioned above to better explain their meanings, involving practical or theoretical aspects.

  12. "¡Cocinar Para Su Salud!" Development of a Culturally Based Nutrition Education Curriculum for Hispanic Breast Cancer Survivors Using a Theory-Driven Procedural Model

    Science.gov (United States)

    Aycinena, Ana Corina; Jennings, Kerri-Ann; Gaffney, Ann Ogden; Koch, Pamela A.; Contento, Isobel R.; Gonzalez, Monica; Guidon, Ela; Karmally, Wahida; Hershman, Dawn; Greenlee, Heather

    2017-01-01

    We developed a theory-based dietary change curriculum for Hispanic breast cancer survivors with the goal of testing the effects of the intervention on change in dietary intake of fruits/vegetables and fat in a randomized, clinical trial. Social cognitive theory and the transtheoretical model were used as theoretical frameworks to structure…

  13. Using a Systematic Conceptual Model for a Process Evaluation of a Middle School Obesity Risk-Reduction Nutrition Curriculum Intervention: Choice, Control & Change

    Science.gov (United States)

    Lee, Heewon; Contento, Isobel R.; Koch, Pamela

    2012-01-01

    Objective To use and review a conceptual model of process evaluation and to examine the implementation of a nutrition education curriculum, Choice, Control & Change, designed to promote dietary and physical activity behaviors that reduce obesity risk. Design A process evaluation study based on a systematic conceptual model. Setting Five middle schools in New York City. Participants 562 students in 20 classes and their science teachers (n=8). Main Outcome Measures Based on the model, teacher professional development, teacher implementation, and student reception were evaluated. Also measured were teacher characteristics, teachers’ curriculum evaluation, and satisfaction with teaching the curriculum. Analysis Descriptive statistics and Spearman’s Rho Correlation for quantitative analysis and content analysis for qualitative data were used. Results Mean score of the teacher professional development evaluation was 4.75 on a 5-point scale. Average teacher implementation rate was 73%, and student reception rate was 69%. Ongoing teacher support was highly valued by teachers. Teachers’ satisfaction with teaching the curriculum was highly correlated with students’ satisfaction (p <.05). Teachers’ perception of amount of student work was negatively correlated with implementation and with student satisfaction (p<.05). Conclusions and implications Use of a systematic conceptual model and comprehensive process measures improves understanding of the implementation process and helps educators to better implement interventions as designed. PMID:23321021

  14. Using a systematic conceptual model for a process evaluation of a middle school obesity risk-reduction nutrition curriculum intervention: choice, control & change.

    Science.gov (United States)

    Lee, Heewon; Contento, Isobel R; Koch, Pamela

    2013-03-01

    To use and review a conceptual model of process evaluation and to examine the implementation of a nutrition education curriculum, Choice, Control & Change, designed to promote dietary and physical activity behaviors that reduce obesity risk. A process evaluation study based on a systematic conceptual model. Five middle schools in New York City. Five hundred sixty-two students in 20 classes and their science teachers (n = 8). Based on the model, teacher professional development, teacher implementation, and student reception were evaluated. Also measured were teacher characteristics, teachers' curriculum evaluation, and satisfaction with teaching the curriculum. Descriptive statistics and Spearman ρ correlation for quantitative analysis and content analysis for qualitative data were used. Mean score of the teacher professional development evaluation was 4.75 on a 5-point scale. Average teacher implementation rate was 73%, and the student reception rate was 69%. Ongoing teacher support was highly valued by teachers. Teacher satisfaction with teaching the curriculum was highly correlated with student satisfaction (P model and comprehensive process measures improves understanding of the implementation process and helps educators to better implement interventions as designed. Copyright © 2013 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

  15. Validity and Reliability of a Questionnaire on Primary and Secondary School Teachers' Perception of Teaching a Competence-Based Curriculum Model

    Science.gov (United States)

    García-López, Luis M.; Gutiérrez, David; Pastor, Juan Carlos; Romo, Vicente

    2018-01-01

    The aim of this study is to develop a scale to measure primary and secondary school teachers' perception of a competence-based curriculum model in Spain. After reviewing the literature, we designed an initial questionnaire with 37 five-point Likert-type items. This was then reviewed by a panel of experts. A pilot test was conducted with 100…

  16. Maximising Students' Progress and Engagement in Science through the Use of the Biological Sciences Curriculum Study (BSCS) 5E Instructional Model

    Science.gov (United States)

    Hoskins, Peter

    2013-01-01

    The Biological Sciences Curriculum Studies (BSCS) 5E Instructional Model (often referred to as the 5Es) consists of five phases. Each phase has a specific function and contributes both to teachers' coherent instruction and to students' formulation of a better understanding of scientific knowledge, attitudes and skills. Evidence indicates that the…

  17. Metal Matrix Composites for Liquid Rocket Engines

    National Research Council Canada - National Science Library

    Shelley, J

    2001-01-01

    ...) technologies being developed for application to Liquid Rocket Engines (LIRE). Developments in LRE technology for the US Air Force are being tracked and planned through the Integrated High Payoff Rocket Propulsion Technologies Program (IHPRPT...

  18. Integrated Composite Rocket Nozzle Extension Project

    Data.gov (United States)

    National Aeronautics and Space Administration — ORBITEC proposes to develop and demonstrate an Integrated Composite Rocket Nozzle Extension (ICRNE) for use in rocket thrust chambers. The ICRNE will utilize an...

  19. Integrated Composite Rocket Nozzle Extension, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — ORBITEC proposes to develop and demonstrate an Integrated Composite Rocket Nozzle Extension (ICRNE) for use in rocket thrust chambers. The ICRNE will utilize an...

  20. Some typical solid propellant rocket motors

    NARCIS (Netherlands)

    Zandbergen, B.T.C.

    2013-01-01

    Typical Solid Propellant Rocket Motors (shortly referred to as Solid Rocket Motors; SRM's) are described with the purpose to form a database, which allows for comparative analysis and applications in practical SRM engineering.

  1. SYMBIOSIS: development, implementation, and assessment of a model curriculum across biology and mathematics at the introductory level.

    Science.gov (United States)

    Depelteau, Audrey M; Joplin, Karl H; Govett, Aimee; Miller, Hugh A; Seier, Edith

    2010-01-01

    "It takes a lot of courage to release the familiar and seemingly secure, to embrace the new. But there is no real security in what is no longer meaningful. There is more security in the adventurous and exciting, for in movement there is life, and in change there is power." Alan Cohen (Used by permission. All rights reserved. For more information on Alan Cohen's books and programs, see (www.alancohen.com.) With the support of the East Tennessee State University (ETSU) administration and a grant from Howard Hughes Medical Institute, the departments of Biological Sciences, Mathematics and Statistics, and Curriculum and Instruction have developed a biology-math integrated curriculum. An interdisciplinary faculty team, charged with teaching the 18 curriculum modules, designed this three-semester curriculum, known as SYMBIOSIS. This curriculum was piloted to two student cohorts during the developmental stage. The positive feedback and assessment results of this project have given us the foundation to implement the SYMBIOSIS curriculum as a replacement for the standard biology majors curriculum at the introductory level. This article addresses the history and development of the curriculum, previous assessment results and current assessment protocol, and the future of ETSU's approach to implementing the SYMBIOSIS curriculum.

  2. SYMBIOSIS: Development, Implementation, and Assessment of a Model Curriculum across Biology and Mathematics at the Introductory Level

    Science.gov (United States)

    Joplin, Karl H.; Govett, Aimee; Miller, Hugh A.; Seier, Edith

    2010-01-01

    “It takes a lot of courage to release the familiar and seemingly secure, to embrace the new. But there is no real security in what is no longer meaningful. There is more security in the adventurous and exciting, for in movement there is life, and in change there is power.”Alan Cohen (Used by permission. All rights reserved. For more information on Alan Cohen's books and programs, see (www.alancohen.com.) With the support of the East Tennessee State University (ETSU) administration and a grant from Howard Hughes Medical Institute, the departments of Biological Sciences, Mathematics and Statistics, and Curriculum and Instruction have developed a biology–math integrated curriculum. An interdisciplinary faculty team, charged with teaching the 18 curriculum modules, designed this three-semester curriculum, known as SYMBIOSIS. This curriculum was piloted to two student cohorts during the developmental stage. The positive feedback and assessment results of this project have given us the foundation to implement the SYMBIOSIS curriculum as a replacement for the standard biology majors curriculum at the introductory level. This article addresses the history and development of the curriculum, previous assessment results and current assessment protocol, and the future of ETSU's approach to implementing the SYMBIOSIS curriculum. PMID:20810967

  3. Clinical leadership and pre-registration nursing programmes: A model for clinical leadership and a prospective curriculum implementation and evaluation research strategy.

    Science.gov (United States)

    Brown, Angela; Dewing, Jan; Crookes, Patrick

    2016-07-01

    To present for wider debate a conceptual model for clinical leadership development in pre-registration nursing programmes and a proposed implementation plan. Globally, leadership in nursing has become a significant issue. Whilst there is continued support for leadership preparation in pre-registration nursing programmes, there have been very few published accounts of curriculum content and/or pedagogical approaches that foster clinical leadership development in pre-registration nursing. A doctoral research study has resulted in the creation of an overarching model for clinical leadership. A multi-method research study using theoretical and empirical literature 1974-2015, a focus group, expert opinion and a national on-line survey. A conceptual model of clinical leadership development in pre-registration nursing programme is presented, including the infinity loop of clinical leadership, an integral curriculum thread and a conceptual model: a curriculum-pedagogy nexus for clinical leadership. In order to test out usability and evaluate effectiveness, a multi method programme of research in one school of nursing in Australia is outlined. Implementation of the proposed conceptual model for clinical leadership development in pre-registration nursing programmes and a programme of (post-doctoral) research will contribute to what is known about curriculum content and pedagogy for nurse academics. Importantly, for nursing students and the profession as a whole, there is a clearer expectation of what clinical leadership might look like in the novice registered nurse. For nurse academics a model is offered for consideration in curriculum design and implementation with an evaluation strategy that could be replicated. Copyright © 2016 Elsevier Ltd. All rights reserved.

  4. Numerical investigations of hybrid rocket engines

    Science.gov (United States)

    Betelin, V. B.; Kushnirenko, A. G.; Smirnov, N. N.; Nikitin, V. F.; Tyurenkova, V. V.; Stamov, L. I.

    2018-03-01

    Paper presents the results of numerical studies of hybrid rocket engines operating cycle including unsteady-state transition stage. A mathematical model is developed accounting for the peculiarities of diffusion combustion of fuel in the flow of oxidant, which is composed of oxygen-nitrogen mixture. Three dimensional unsteady-state simulations of chemically reacting gas mixture above thermochemically destructing surface are performed. The results show that the diffusion combustion brings to strongly non-uniform fuel mass regression rate in the flow direction. Diffusive deceleration of chemical reaction brings to the decrease of fuel regression rate in the longitudinal direction.

  5. Rocket Ignition Demonstrations Using Silane

    Science.gov (United States)

    Pal, Sibtosh; Santoro, Robert; Watkins, William B.; Kincaid, Kevin

    1998-01-01

    Rocket ignition demonstration tests using silane were performed at the Penn State Combustion Research Laboratory. A heat sink combustor with one injection element was used with gaseous propellants. Mixtures of silane and hydrogen were used as fuel, and oxygen was used as oxidizer. Reliable ignition was demonstrated using fuel lead and and a swirl injection element.

  6. Centrifugal pumps for rocket engines

    Science.gov (United States)

    Campbell, W. E.; Farquhar, J.

    1974-01-01

    The use of centrifugal pumps for rocket engines is described in terms of general requirements of operational and planned systems. Hydrodynamic and mechanical design considerations and techniques and test procedures are summarized. Some of the pump development experiences, in terms of both problems and solutions, are highlighted.

  7. Scale Effects on Solid Rocket Combustion Instability Behaviour

    OpenAIRE

    David R. Greatrix

    2011-01-01

    The ability to understand and predict the expected internal behaviour of a given solid-propellant rocket motor under transient conditions is important. Research towards predicting and quantifying undesirable transient axial combustion instability symptoms necessitates a comprehensive numerical model for internal ballistic simulation under dynamic flow and combustion conditions. A numerical model incorporating pertinent elements, such as a representative transient, frequency-dependent combusti...

  8. "Good Enough" Psychiatric Residency Training in Borderline Personality Disorder: Challenges, Choice Points, and a Model Generalist Curriculum.

    Science.gov (United States)

    Unruh, Brandon T; Gunderson, John G

    2016-01-01

    While the public health burden posed by borderline personality disorder (BPD) rivals that associated with other major mental illnesses, the prevailing disposition of psychiatrists toward the disorder remains characterized by misinformation, stigma, aversive attitudes, and insufficient familiarity with effective generalist treatments that can be delivered in nonspecialized health care settings. Residency training programs are well positioned to better equip the next generation of psychiatrists to address these issues, but no consensus or guidelines currently exist for what and how residents should be taught about managing BPD. Instead, disproportionately limited curricular time, teaching of non-evidence-based approaches, and modeling of conceptually confused combinations of techniques drawn from specialty BPD treatments are offered. In this article, we (1) explain why training in a generalist model is sensible and why alternative approaches are not appropriate for residents, (2) propose a plan for giving residents adequate training via a generalist model, highlighting minimal didactic and clinical-training objectives (dubbed "core competencies" and "milestones") and a model curriculum developed at the Massachusetts General Hospital/McLean Hospital residency program, and (3) describe obstacles to implementation of effective generalist training posed by infrastructural, faculty-centered, and resident-centered variables.

  9. A Critical Review of Qualitative Research Methods in Evaluating Nursing Curriculum Models: Implication for Nursing Education in the Arab World

    Science.gov (United States)

    Devadas, Briliya

    2016-01-01

    Aim: The purpose of this critical literature review was to examine qualitative studies done on innovative nursing curriculums in order to determine which qualitative methods have been most effective in investigating the effectiveness of the curriculum and which would be most appropriate in an Arab Islamic country. Data Sources: At least 25 studies…

  10. A Model for Technovocational School-Based Curriculum Planning and Evaluation under the Framework of Total Quality Management.

    Science.gov (United States)

    Wang, Yen-Zen

    In the current climate of rapid technological advance and social value change, many have suggested that schools should use a school-based approach to curriculum planning. How to design such a curriculum in order to train graduates suited for employment has become an important issue. Many domestic and international enterprises have successfully…

  11. Potential Teaching Model for Applying Novel Approaches of Renewed Estonian National Curriculum into Visual Art Classes in Primary School

    Science.gov (United States)

    Vahter, Edna

    2015-01-01

    In 2010, the renewed national curriculum was legislated in Estonia. Major changes include a new list of cross-curricular topics, increased importance of integration and specification of the components of the art learning process. In this situation, the question arises--how to fully implement the challenges of the renewed curriculum in primary…

  12. A Comparative Study on Student Perceptions of Their Learning Outcomes in Undergraduate Science Degree Programmes with Differing Curriculum Models

    Science.gov (United States)

    Matthews, Kelly E.; Firn, Jennifer; Schmidt, Susanne; Whelan, Karen

    2017-01-01

    This study investigated students' perceptions of their graduate learning outcomes including content knowledge, communication, writing, teamwork, quantitative skills, and ethical thinking in two Australian universities. One university has a traditional discipline-orientated curriculum and the other, an interdisciplinary curriculum in the entry…

  13. Performance of an Axisymmetric Rocket Based Combined Cycle Engine During Rocket Only Operation Using Linear Regression Analysis

    Science.gov (United States)

    Smith, Timothy D.; Steffen, Christopher J., Jr.; Yungster, Shaye; Keller, Dennis J.

    1998-01-01

    The all rocket mode of operation is shown to be a critical factor in the overall performance of a rocket based combined cycle (RBCC) vehicle. An axisymmetric RBCC engine was used to determine specific impulse efficiency values based upon both full flow and gas generator configurations. Design of experiments methodology was used to construct a test matrix and multiple linear regression analysis was used to build parametric models. The main parameters investigated in this study were: rocket chamber pressure, rocket exit area ratio, injected secondary flow, mixer-ejector inlet area, mixer-ejector area ratio, and mixer-ejector length-to-inlet diameter ratio. A perfect gas computational fluid dynamics analysis, using both the Spalart-Allmaras and k-omega turbulence models, was performed with the NPARC code to obtain values of vacuum specific impulse. Results from the multiple linear regression analysis showed that for both the full flow and gas generator configurations increasing mixer-ejector area ratio and rocket area ratio increase performance, while increasing mixer-ejector inlet area ratio and mixer-ejector length-to-diameter ratio decrease performance. Increasing injected secondary flow increased performance for the gas generator analysis, but was not statistically significant for the full flow analysis. Chamber pressure was found to be not statistically significant.

  14. Communicating safe sun practices to farm youth: a model and field test of a proposed curriculum

    International Nuclear Information System (INIS)

    Turk, D.R.; Parrott, R.; Martin, M.; Steiner, C.; Lewis, D.

    1997-01-01

    This project was designed to identify the barriers and motivators to farm youths' performance of skin cancer prevention and detection behavior in order to design curricula which could directly address both. The curriculum as developed was pilot tested in 1994 at the Georgia Healthy Farmers ''Farm Kids'' Safety Camp. The 82 participants, aged 8 to 15 years, were children of Georgia farmers. Eight Sun Safety classes were held over the course of two days. Participants were seated in a large conference room and were given a research questionnaire packet consisting of a skin cancer prevention/detection knowledge measure, three skin cancer related fact sheets, and a workbook to be used to rate various skin cancer prevention/detection materials and behaviors staged at centers around the room. A brief presentation about the dangers of sun exposure and skin cancer prevention behaviors was given after which subjects participated in three activities: a sun protection hat station, a sun block station, and skin self exam station. Student t- tests were conducted comparing the outcome expectancy scores for individuals who reported that they would wear the particular hat or sunscreen with the outcome expectancy scores for individuals who reported that they would not wear the particular hat or sunscreen. Participants who reported that they would wear the hat had significantly higher positive outcome expectancy scores than those who said that they would not wear those hats. For four out of five sun blocks, participants who reported that they would wear these blocks had significantly higher positive outcome expectancies than those reporting that they would not wear them. The authors conclude that health education curricula to promote sun safety to youth must focus on building positive outcome expectancies in relation to the most efficacious practices, and in drawing clear distinctions for youth among their options, so that they are able to make decisions for themselves. (author)

  15. Welding Curriculum.

    Science.gov (United States)

    Alaska State Dept. of Education, Juneau. Div. of Adult and Vocational Education.

    This competency-based curriculum guide is a handbook for the development of welding trade programs. Based on a survey of Alaskan welding employers, it includes all competencies a student should acquire in such a welding program. The handbook stresses the importance of understanding the principles associated with the various elements of welding.…

  16. Representing Curriculum

    Science.gov (United States)

    Gaztambide-Fernandez, Ruben

    2009-01-01

    Handbooks denote representative authority, which gives their content normative value and through which editors and authors can emphasize certain views and orientations within a field. The representative authority of a handbook is reinforced in various ways, both obvious and subtle. The "SAGE Handbook of Curriculum and Instruction" is no exception…

  17. Tourism Curriculum.

    Science.gov (United States)

    Alaska State Dept. of Education, Juneau. Div. of Adult and Vocational Education.

    This competency-based curriculum guide is a handbook for the development of tourism education programs. Based on a survey of Alaskan tourism employers, it includes all competencies a student should acquire in such a welding program. The handbook stresses the importance of understanding the principles associated with the various components of the…

  18. Guided Multiple Launch Rocket System/Guided Multiple Launch Rocket System Alternative Warhead (GMLRS/GMLRS AW)

    Science.gov (United States)

    2015-12-01

    Launch Rocket System/Guided Multiple Launch Rocket System Alternative... Launch Rocket System/Guided Multiple Launch Rocket System Alternative Warhead (GMLRS/GMLRS AW) DoD Component Army Responsible Office References SAR...UNCLASSIFIED 5 Mission and Description The mission of the Guided Multiple Launch Rocket System/Guided Multiple Launch Rocket System Alternative

  19. Integrating technology, curriculum, and online resources: A multilevel model study of impacts on science teachers and students

    Science.gov (United States)

    Ye, Lei

    This scale-up study investigated the impact of a teacher technology tool (Curriculum Customization Service, CCS), curriculum, and online resources on earth science teachers' attitudes, beliefs, and practices and on students' achievement and engagement with science learning. Participants included 73 teachers and over 2,000 ninth-grade students within five public school districts in the western U.S. To assess the impact on teachers, changes between pre- and postsurveys were examined. Results suggest that the CCS tool appeared to significantly increase both teachers' awareness of other earth science teachers' practices and teachers' frequency of using interactive resources in their lesson planning and classroom teaching. A standard multiple regression model was developed. In addition to "District," "Training condition" (whether or not teachers received CCS training) appeared to predict teachers' attitudes, beliefs, and practices. Teachers who received CCS training tended to have lower postsurvey scores than their peers who had no CCS training. Overall, usage of the CCS tool tended to be low, and there were differences among school districts. To assess the impact on students, changes were examined between pre- and postsurveys of (1) knowledge assessment and (2) students' engagement with science learning. Students showed pre- to postsurvey improvements in knowledge assessment, with small to medium effect sizes. A nesting effect (students clustered within teachers) in the Earth's Dynamic Geosphere (EDG) knowledge assessment was identified and addressed by fitting a two-level hierarchical linear model (HLM). In addition, significant school district differences existed for student post-knowledge assessment scores. On the student engagement questionnaire, students tended to be neutral or to slightly disagree that science learning was important in terms of using science in daily life, stimulating their thinking, discovering science concepts, and satisfying their own

  20. Unique nuclear thermal rocket engine

    International Nuclear Information System (INIS)

    Culver, D.W.; Rochow, R.

    1993-06-01

    In January, 1992, a new, advanced nuclear thermal rocket engine (NTRE) concept intended for manned missions to the moon and to Mars was introduced (Culver, 1992). This NTRE promises to be both shorter and lighter in weight than conventionally designed engines, because its forward flowing reactor is located within an expansion-deflection rocket nozzle. The concept has matured during the year, and this paper discusses a nearer term version that resolves four open issues identified in the initial concept: (1) the reactor design and cooling scheme simplification while retaining a high pressure power balance option; (2) elimination need for a new, uncooled nozzle throat material suitable for long life application; (3) a practical provision for reactor power control; and (4) use of near-term, long-life turbopumps

  1. Electron beam sounding rocket experiments for probing the distant magnetosphere

    Science.gov (United States)

    Nemzek, R. J.; Winckler, J. R.

    1991-01-01

    Electron accelerators on sounding rockets have injected 8-40-keV electrons on closed magnetospheric tail field lines near 250 km altitude in the northern auroral zone. These beams mirrored at the southern conjugate point ad returned as 'echoes' which were detected on the rocket system. The 20 percent of the beam that returned was sufficient to measure field line lengths and verify magnetospheric magnetic models, to measure fluctuating electric fields, and electron pitch angle scattering (6-10) R(E) distant, and to identify 10-100 V field-aligned potentials above the rocket. The experiment gives new insight into the motion of natural electrons in the outer Van Allen radiation belt.

  2. Rocket Engine Altitude Simulation Technologies

    Science.gov (United States)

    Woods, Jody L.; Lansaw, John

    2010-01-01

    John C. Stennis Space Center is embarking on a very ambitious era in its rocket engine propulsion test history. The first new large rocket engine test stand to be built at Stennis Space Center in over 40 years is under construction. The new A3 Test Stand is designed to test very large (294,000 Ibf thrust) cryogenic propellant rocket engines at a simulated altitude of 100,000 feet. A3 Test Stand will have an engine testing chamber where the engine will be fired after the air in the chamber has been evacuated to a pressure at the simulated altitude of less than 0.16 PSIA. This will result in a very unique environment with extremely low pressures inside a very large chamber and ambient pressures outside this chamber. The test chamber is evacuated of air using a 2-stage diffuser / ejector system powered by 5000 lb/sec of steam produced by 27 chemical steam generators. This large amount of power and flow during an engine test will result in a significant acoustic and vibrational environment in and around A3 Test Stand.

  3. Writings as modelling examples: Scaffolds for academic writing in a post-graduate curriculum

    NARCIS (Netherlands)

    Firssova, Olga

    2014-01-01

    The presented study investigated the effectiveness of learning from models in the context of post-graduate academic writing. Two questions were pursued: whether studying model writings supports mature students in writing in a new genre and whether integrating additional scaffolds in such models has

  4. Model texts in an advanced academic writing curriculum: Unravelling an instructional strategy

    NARCIS (Netherlands)

    Firssova, Olga

    2014-01-01

    The study investigated the effectiveness of learning from models in the context of post-graduate academic writing. Two questions were pursued: whether studying model writings supports mature students in writing in a new genre and whether integrating additional scaffolds in such models has added

  5. Systems Models in Educational Research: A Review and Realignment in the Context of Curriculum

    Science.gov (United States)

    Lee, Nicolette

    2015-01-01

    System models are commonly used in tertiary education as a mechanism for describing the interacting components of educational phenomena, but have hitherto been uncritically accepted. This paper provides a critical review of existing systems models, including the 3P model defined Biggs, and outlines their conceptual challenges. A revised model…

  6. From Classrooms to Geosciences Careers: Developing and Testing a Curriculum Module and Web Application for Modeling Water in Urban Environments

    Science.gov (United States)

    Cervenec, J. M.; Durand, M. T.

    2014-12-01

    A curriculum module created to teach basic principles of hydrology and promote geoscience careers at the high school level will be shared. The module, consisting of five exercises of increasing complexity, focuses on investigating local problems in hydrology using tangible models, readily available online tools, and a custom-built web application. The module culminates in students examining changing land use patterns over time and looking at subsequent impacts on runoff. Materials were field tested during two summer workshops for educators and support was provided during the subsequent school years. Participants reported that the materials filled existing voids in their instructional materials, that they preferred to select individual exercises for use in their classrooms rather than the module as a whole, and that they found online tools in geosciences and connections to local field sites and geoscience professionals to be particularly valuable. Furthermore, while the five exercises where developed for use together in high school classrooms, individual exercises were found to be applicable in classrooms from the elementary through graduate levels. The module addresses NGSS Disciplinary Core Idea - The Role of Water in Earth's Surface Processes in addition to Cross Cutting Concepts - Systems and System Models and Influence of Engineering, Technology, and Science on Society and the Natural World and multiple NGSS Practices.

  7. Gagne's and Laurillard's Models of Instruction Applied to Distance Education: A theoretically driven evaluation of an online curriculum in public health

    Directory of Open Access Journals (Sweden)

    Peggy Hannon

    2002-10-01

    Full Text Available This article presents an overview of the instructional models of Gagne, Briggs, and Wager (1992 and Laurillard (1993; 2002, followed by student evaluations from the first year of an online public health core curriculum. Both online courses and their evaluations were developed in accordance with the two models of instruction. The evaluations by students indicated that they perceived they had achieved the course objectives and were generally satisfied with the experience of taking the courses online. However, some students were dissatisfied with the feedback and learning guidance they received; these students’ comments supported Laurillard’s model of instruction. Discussion captured in this paper focuses on successes of the first year of the online curriculum, suggestions for solving problem areas, and the importance of the perceived relationship between teacher and student in the distance education environment.

  8. Analytical Description of Ascending Motion of Rockets in the Atmosphere

    Science.gov (United States)

    Rodrigues, H.; de Pinho, M. O.; Portes, D., Jr.; Santiago, A.

    2009-01-01

    In continuation of a previous work, we present an analytic study of ascending vertical motion of a rocket subjected to a quadratic drag for the case where the mass-variation law is a linear function of time. We discuss the detailed analytical solution of the model differential equations in closed form. Examples of application are presented and…

  9. Software for Collaborative Engineering of Launch Rockets

    Science.gov (United States)

    Stanley, Thomas Troy

    2003-01-01

    The Rocket Evaluation and Cost Integration for Propulsion and Engineering software enables collaborative computing with automated exchange of information in the design and analysis of launch rockets and other complex systems. RECIPE can interact with and incorporate a variety of programs, including legacy codes, that model aspects of a system from the perspectives of different technological disciplines (e.g., aerodynamics, structures, propulsion, trajectory, aeroheating, controls, and operations) and that are used by different engineers on different computers running different operating systems. RECIPE consists mainly of (1) ISCRM a file-transfer subprogram that makes it possible for legacy codes executed in their original operating systems on their original computers to exchange data and (2) CONES an easy-to-use filewrapper subprogram that enables the integration of legacy codes. RECIPE provides a tightly integrated conceptual framework that emphasizes connectivity among the programs used by the collaborators, linking these programs in a manner that provides some configuration control while facilitating collaborative engineering tradeoff studies, including design to cost studies. In comparison with prior collaborative-engineering schemes, one based on the use of RECIPE enables fewer engineers to do more in less time.

  10. Rocket Engine Numerical Simulator (RENS)

    Science.gov (United States)

    Davidian, Kenneth O.

    1997-01-01

    Work is being done at three universities to help today's NASA engineers use the knowledge and experience of their Apolloera predecessors in designing liquid rocket engines. Ground-breaking work is being done in important subject areas to create a prototype of the most important functions for the Rocket Engine Numerical Simulator (RENS). The goal of RENS is to develop an interactive, realtime application that engineers can utilize for comprehensive preliminary propulsion system design functions. RENS will employ computer science and artificial intelligence research in knowledge acquisition, computer code parallelization and objectification, expert system architecture design, and object-oriented programming. In 1995, a 3year grant from the NASA Lewis Research Center was awarded to Dr. Douglas Moreman and Dr. John Dyer of Southern University at Baton Rouge, Louisiana, to begin acquiring knowledge in liquid rocket propulsion systems. Resources of the University of West Florida in Pensacola were enlisted to begin the process of enlisting knowledge from senior NASA engineers who are recognized experts in liquid rocket engine propulsion systems. Dr. John Coffey of the University of West Florida is utilizing his expertise in interviewing and concept mapping techniques to encode, classify, and integrate information obtained through personal interviews. The expertise extracted from the NASA engineers has been put into concept maps with supporting textual, audio, graphic, and video material. A fundamental concept map was delivered by the end of the first year of work and the development of maps containing increasing amounts of information is continuing. Find out more information about this work at the Southern University/University of West Florida. In 1996, the Southern University/University of West Florida team conducted a 4day group interview with a panel of five experts to discuss failures of the RL10 rocket engine in conjunction with the Centaur launch vehicle. The

  11. Correlation Educational Model in Primary Education Curriculum of Mathematics and Computer Science

    Science.gov (United States)

    Macinko Kovac, Maja; Eret, Lidija

    2012-01-01

    This article gives insight into methodical correlation model of teaching mathematics and computer science. The model shows the way in which the related areas of computer science and mathematics can be supplemented, if it transforms the way of teaching and creates a "joint" lessons. Various didactic materials are designed, in which all…

  12. Using the QUAIT Model to Effectively Teach Research Methods Curriculum to Master's-Level Students

    Science.gov (United States)

    Hamilton, Nancy J.; Gitchel, Dent

    2017-01-01

    Purpose: To apply Slavin's model of effective instruction to teaching research methods to master's-level students. Methods: Barriers to the scientist-practitioner model (student research experience, confidence, and utility value pertaining to research methods as well as faculty research and pedagogical incompetencies) are discussed. Results: The…

  13. Heat transfer in rocket combustion chambers

    Science.gov (United States)

    Anderson, P.; Cheng, G.; Farmer, R.

    1993-11-01

    Complexities of liquid rocket engine heat transfer which involve the injector faceplate and film cooled walls are being investigated by computational analysis. A conjugate heat transfer analysis was used to describe localized heating phenomena associated with particular injector configurations and film coolant flows. These components were analyzed, and the analyses verified when appropriate test data were available. The component analyses are being synthesized into an overall flowfield/heat transfer model. A Navier-Stokes flow solver, the FDNS code, was used to make the analyses. Particular attention was given to the representation of the thermodynamic properties of the fluid streams. Unit flow models of specific coaxial injector elements have been developed and are being used to describe the flame structure near the injector faceplate.

  14. GLOBE Atmosphere and AMS Diversity Program Content to Foster Weather and Climate Science Awareness at HBCUs: A Curriculum Enhancement Model

    Science.gov (United States)

    Padgett, D.

    2017-12-01

    Tennessee State University (TSU) is a member of the "Global Learning and Observations to Benefit the Environment (GLOBE) Mission Earth" project. The World Regional Geography (GEOG 1010/1020) courses are required for Education majors. Pre-service teachers must complete several exercises to be certified in the GLOBE Atmosphere Protocols. The pre-service teachers are required to develop GLOBE-based lessons to high school students. The exercise theme is "Exploring the Impacts of Urban Heat Islands (UHI) using Geospatial Technology." Surface temperature, ambient air temperature, and cloud cover data are collected. Sample point locations are logged using Garmin GPS receivers and then mapped using ArcGIS Online (http://arcg.is/1oiD379). The service learning outreach associated with this experience requires collegians to thoroughly understand the physical, social, and health science content associated with UHIs and then impart the information to younger learners. The precollegiate students are motivated due to their closeness in age and social context to the college students. All of the students have the advantage of engaging in hands-on problem-based learning of complex meteorology, climate science, and geospatial technology concepts. The optimal result is to have pre-service teachers enroll in the Weather and Climate (GEOG 3500) course, which is supported by the American Meteorological Society (AMS) Weather and Climate Studies Curriculum. Tennessee State University faculty have completed training to deliver the curriculum through the AMS Diversity Program. The AMS Weather Studies and Climate Studies programs have been institutionalized at Tennessee State University (TSU) since fall 2005. Approximately 250 undergraduate students have been exposed to the interactive AMS learning materials over the past 10-plus years. Non-STEM, and education majors are stimulated by the real-time course content and are encouraged to think critically about atmospheric systems science, and

  15. Model of Supervision Based on Primary School Teacher Professional Competency in Tematic Learning in Curriculum 2013

    Directory of Open Access Journals (Sweden)

    Meilani Hartono

    2017-08-01

    Full Text Available This study aims to find the Supervision Model Based on Primary Teacher Professional Competence which effective on integrated learning. This study use research and development with qualitative approach which will be carried out in the Palmerah, West Jakarta. The techniques used to collect data are interviews, questionnaires, observation and documentation. Data v alidity is tested with credibility, transferability, dependability, and comfortability. The model developed will be validated using the Delphi technique. The result of this research is the discovery of the model and device-based supervision model of professional competence of primary teachers in integrated learning. The long-term goal of this research is to improve the teachers’ competence and the supervision quality for primary teachers in integrated learning

  16. How Science Could Drive Curriculum Development

    Science.gov (United States)

    Markwick, Andy; Nandhra, Satvinder

    2010-01-01

    This article describes how science can lead whole-school curriculum change at key stage 3 (ages 11-14). Two thematic curriculum models are described. Model 1 shows how science specialists can develop student understanding of how science interrelates to a variety of other subject areas, while Model 2 shows how science might help to create a…

  17. Auditing sex- and gender-based medicine (SGBM) content in medical school curriculum: a student scholar model.

    Science.gov (United States)

    Song, Michael M; Jones, Betsy G; Casanova, Robert A

    2016-01-01

    Sex- and gender-based medicine (SGBM) aims to (1) delineate and investigate sex- and gender-based differences in health, disease, and response to treatment and (2) apply that knowledge to clinical care to improve the health of both women and men. However, the integration of SGBM into medical school curricula is often haphazard and poorly defined; schools often do not know the current status of SGBM content in their curricula, even if they are committed to addressing gaps and improving SGBM delivery. Therefore, complete auditing and accounting of SGBM content in the existing medical school curriculum is necessary to determine the baseline status and prepare for successful integration of SGBM content into that curriculum. A review of course syllabi and lecture objectives as well as a targeted data analysis of the Curriculum Management and Information Tool (CurrMIT) were completed prior to a real-time curriculum audit. Subsequently, six "student scholars," three first-year and three second-year medical students, were recruited and trained to audit the first 2 years of the medical school curriculum for SGBM content, thus completing an audit for both of the pre-clinical years simultaneously. A qualitative analysis and a post-audit comparative analysis were completed to assess the level of SGBM instruction at our institution. The review of syllabi and the CurrMIT data analysis did not generate a meaningful catalogue of SGBM content in the curriculum; most of the content identified specifically targeted women's or men's health topics and not sex- or gender-based differences. The real-time student audit of the existing curriculum at Texas Tech revealed that most of the SGBM material was focused on the physiological/anatomical sex differences or gender differences in disease prevalence, with minimal coverage of sex- or gender-based differences in diagnosis, prognosis, treatment, and outcomes. The real-time student scholar audit was effective in identifying SGBM content in

  18. Solid Rocket Testing at AFRL (Briefing Charts)

    Science.gov (United States)

    2016-10-21

    19b. TELEPHONE NUMBER (Include area code) 10/21/2016 Briefing Charts 01 October 2016 - 31 October 2016 Solid Rocket Testing at AFRL Robert Antypas Air...Unclassified SAR 18 R. Antypas N/A Solid Rocket Testing at AFRL 21 Oct 2016 Robert Antypas AFRL/RQRO -Distribution A: Approved for Public Release...Distribution Unlimited. PA#16492 2 Agenda • Solid Rocket Motors • History of Sea Level Testing • Small Component Testing • Full-scale Testing • Altitude

  19. Energy Management Curriculum Starter Kit

    Energy Technology Data Exchange (ETDEWEB)

    Turner, W.C.

    1987-02-01

    The Energy Management Curriculum Starter Kit was designed to help engineering educators develop and teach energy management courses. Montana State University and Oklahoma State University courses are embodied in the model curriculum given. The curricula offered at many other universities throughout the United States are also presented. The kit was designed specifically to train engineering students to be good energy managers. Courses at both the undergraduate and postgraduate level are presented.

  20. Hairy Root as a Model System for Undergraduate Laboratory Curriculum and Research

    Science.gov (United States)

    Keyes, Carol A.; Subramanian, Senthil; Yu, Oliver

    2009-01-01

    Hairy root transformation has been widely adapted in plant laboratories to rapidly generate transgenic roots for biochemical and molecular analysis. We present hairy root transformations as a versatile and adaptable model system for a wide variety of undergraduate laboratory courses and research. This technique is easy, efficient, and fast making…

  1. Evaluation of the Curriculum of English Preparatory Classes at Yildiz Technical University Using CIPP Model

    Science.gov (United States)

    Akpur, Ugur; Alci, Bülent; Karatas, Hakan

    2016-01-01

    The purpose of this study is to evaluate the instruction program of preparatory classes at Yildiz Technical University using CIPP model. A total of 54 teachers and 753 university students attending preparatory classes in the Academic Year of 2014-2015 formed the study group. The research is based on a questionnaire applied to teachers and…

  2. A Modular Approach to Teaching Mathematical Modeling in Biotechnology in the Undergraduate Curriculum

    Science.gov (United States)

    Larripa, Kamila R.; Mazzag, Borbala

    2016-01-01

    Our paper describes a solution we found to a still existing need to develop mathematical modeling courses for undergraduate biology majors. Some challenges of such courses are: (i) relatively limited exposure of biology students to higher-level mathematical and computational concepts; (ii) availability of texts that can give a flavor of how…

  3. Visual Literacy and the Integration of Parametric Modeling in the Problem-Based Curriculum

    Science.gov (United States)

    Assenmacher, Matthew Benedict

    2013-01-01

    This quasi-experimental study investigated the application of visual literacy skills in the form of parametric modeling software in relation to traditional forms of sketching. The study included two groups of high school technical design students. The control and experimental groups involved in the study consisted of two randomly selected groups…

  4. Envisioning Curriculum as Six Simultaneities

    Science.gov (United States)

    Hussain, Hanin; Conner, Lindsey; Mayo, Elaine

    2014-01-01

    This paper uses the discourse of complexity thinking to envision curriculum as six partial and coupled facets that exist simultaneously: curriculum as structure, curriculum as process, curriculum as content, curriculum as teaching, curriculum as learning and curriculum as activity. Such a curriculum is emergent and self-organising. It is emergent…

  5. Lifelong learning for public health practice education: a model curriculum for bioterrorism and emergency readiness.

    Science.gov (United States)

    Olson, Debra; Hoeppner, Mary; Larson, Susan; Ehrenberg, Anne; Leitheiser, Agnes T

    2008-01-01

    In 2002, the University of Minnesota School of Public Health (UMNSPH) adopted an approach that supports basic, advanced, and continuing education curricula to train current and future public health workers. This model for lifelong learning for public health practice education allows for the integration of competency domains from the Council on Linkages Between Academia and Public Health Practice's core public health workforce competency levels and the Centers for Disease Control and Prevention's Bioterrorism and Emergency Readiness Competencies. This article describes how UMNSPH has implemented the model through coordination with state planning efforts and needs assessments in the tristate region of Minnesota, North Dakota, and Wisconsin. In addition, we discuss methods used for credentialing practitioners who have achieved competency at various levels of performance to enhance the capacity of the public health preparedness systems.

  6. [The Homburger Curriculum as a model for medical resident education for ophthalmologists at Saarland University Medical Center].

    Science.gov (United States)

    Goebels, S; Viestenz, A; Seitz, B

    2017-10-01

    The Homburger Curriculum was introduced in 2012 to enhance the medical resident education and professional satisfaction. At the same time different steps were taken to encourage applications of eligible candidates. To address candidates, the Homburger Curriculum is presented on the department's website and a short-term hospitation was introduced. The curriculum has been divided into time slots of 4 months throughout the 5 years of residency. In addition, a booklet of documented evidence of the rotations and a Resident's Compendium were introduced. Internal and external teaching programs, additional research projects and involvement of the residents in the organization of their curriculum were introduced. The paper describes the rationale behind the new structure of the curriculum and its practical outcomes for the department (e. g. a regular standby resident to fill in unexpected gaps). It is discussed in detail which steps were easy to implement and which steps were more difficult to introduce. After consolidation of the numerous steps, the number of resigning residents dropped significantly and the number of applicants increased. The new rotation schedule guarantees every young resident to be able to work at each work area of the Department of Ophthalmology. External training courses can be planned suitable to his/her rotations. An "internal competition" for popular rotations is no longer necessary. Clear organization and transparency in all areas provide good interpersonal climate in which much work still has to be done, but by motivated and satisfied residents.

  7. Tidal analysis of Met rocket wind data

    Science.gov (United States)

    Bedinger, J. F.; Constantinides, E.

    1976-01-01

    A method of analyzing Met Rocket wind data is described. Modern tidal theory and specialized analytical techniques were used to resolve specific tidal modes and prevailing components in observed wind data. A representation of the wind which is continuous in both space and time was formulated. Such a representation allows direct comparison with theory, allows the derivation of other quantities such as temperature and pressure which in turn may be compared with observed values, and allows the formation of a wind model which extends over a broader range of space and time. Significant diurnal tidal modes with wavelengths of 10 and 7 km were present in the data and were resolved by the analytical technique.

  8. Additive Manufacturing a Liquid Hydrogen Rocket Engine

    Science.gov (United States)

    Jones, Carl P.; Robertson, Elizabeth H.; Koelbl, Mary Beth; Singer, Chris

    2016-01-01

    Space Propulsion is a 5 day event being held from 2nd May to the 6th May 2016 at the Rome Marriott Park Hotel in Rome, Italy. This event showcases products like Propulsion sub-systems and components, Production and manufacturing issues, Liquid, Solid, Hybrid and Air-breathing Propulsion Systems for Launcher and Upper Stages, Overview of current programmes, AIV issues and tools, Flight testing and experience, Technology building blocks for Future Space Transportation Propulsion Systems : Launchers, Exploration platforms & Space Tourism, Green Propulsion for Space Transportation, New propellants, Rocket propulsion & global environment, Cost related aspects of Space Transportation propulsion, Modelling, Pressure-Thrust oscillations issues, Impact of new requirements and regulations on design etc. in the Automotive, Manufacturing, Fabrication, Repair & Maintenance industries.

  9. Solid Rocket Booster-Illustration

    Science.gov (United States)

    1977-01-01

    This illustration is a cutaway of the solid rocket booster (SRB) sections with callouts. The Shuttle's two SRB's are the largest solids ever built and the first designed for refurbishment and reuse. Standing nearly 150-feet high, the twin boosters provide the majority of thrust for the first two minutes of flight, about 5.8 million pounds, augmenting the Shuttle's main propulsion system during liftoff. The major design drivers for the solid rocket motors (SRM's) were high thrust and reuse. The desired thrust was achieved by using state-of-the-art solid propellant and by using a long cylindrical motor with a specific core design that allows the propellant to burn in a carefully controlled marner. At burnout, the boosters separate from the external tank and drop by parachute to the ocean for recovery and subsequent refurbishment. The boosters are designed to survive water impact at almost 60 miles per hour, maintain flotation with minimal damage, and preclude corrosion of the hardware exposed to the harsh seawater environment. Under the project management of the Marshall Space Flight Center, the SRB's are assembled and refurbished by the United Space Boosters. The SRM's are provided by the Morton Thiokol Corporation.

  10. ¡Cocinar Para Su Salud! Development of a Culturally Based Nutrition Education Curriculum for Hispanic Breast Cancer Survivors Using a Theory-Driven Procedural Model.

    Science.gov (United States)

    Aycinena, Ana Corina; Jennings, Kerri-Ann; Gaffney, Ann Ogden; Koch, Pamela A; Contento, Isobel R; Gonzalez, Monica; Guidon, Ela; Karmally, Wahida; Hershman, Dawn; Greenlee, Heather

    2017-02-01

    We developed a theory-based dietary change curriculum for Hispanic breast cancer survivors with the goal of testing the effects of the intervention on change in dietary intake of fruits/vegetables and fat in a randomized, clinical trial. Social cognitive theory and the transtheoretical model were used as theoretical frameworks to structure curriculum components using the Nutrition Education DESIGN Procedure. Formative assessments were conducted to identify facilitators and barriers common to Hispanic women and test the degree of difficulty and appropriateness of program materials. Focus groups provided valuable insight and informed preimplementation modifications to the dietary program. The result was a systematically planned, evidence-based, culturally tailored dietary intervention for Hispanic breast cancer survivors, ¡Cocinar Para Su Salud! (Cook for Your Health!). The methodology described here may serve as a framework for the development of future dietary interventions among diverse and minority populations. Short- and long-term study results will be reported elsewhere.

  11. Adapting the Crisis Intervention Team (CIT) model of police-mental health collaboration in a low-income, post-conflict country: curriculum development in Liberia, West Africa.

    Science.gov (United States)

    Kohrt, Brandon A; Blasingame, Elise; Compton, Michael T; Dakana, Samuel F; Dossen, Benedict; Lang, Frank; Strode, Patricia; Cooper, Janice

    2015-03-01

    We sought to develop a curriculum and collaboration model for law enforcement and mental health services in Liberia, West Africa. In 2013 we conducted key informant interviews with law enforcement officers, mental health clinicians, and mental health service users in Liberia, and facilitated a 3-day curriculum workshop. Mental health service users reported prior violent interactions with officers. Officers and clinicians identified incarceration and lack of treatment of mental health service users as key problems, and they jointly drafted a curriculum based upon the Crisis Intervention Team (CIT) model adapted for Liberia. Officers' mental health knowledge improved from 64% to 82% on workshop assessments (t=5.52; P<.01). Clinicians' attitudes improved (t=2.42; P=.03). Six months after the workshop, 69% of clinicians reported improved engagement with law enforcement. Since the Ebola outbreak, law enforcement and clinicians have collaboratively addressed diverse public health needs. Collaborations between law enforcement and mental health clinicians can benefit multiple areas of public health, as demonstrated by partnerships to improve responses during the Ebola epidemic. Future research should evaluate training implementation and outcomes including stigma reduction, referrals, and use of force.

  12. [An example of self-evaluation of a sense of achievement by students in 6-year pharmacy school with the model core curriculum of pharmaceutical education].

    Science.gov (United States)

    Shingaki, Tomoteru; Koyanagi, Jyunichi; Nakamura, Hiroshi; Hirata, Takahiro; Ohta, Atsutane; Akimoto, Masayuki; Shirahata, Akira; Mitsumoto, Atsushi

    2013-01-01

    In March 2012, the first students, finishing the newly introduced 6-year-course of pharmaceutical education, have graduated and gone out into the world. At this point, the Ministry of Education, Culture, Sports, Science and Technology (MEXT) is going to revise the model core curriculum of pharmaceutical education to be more suited for educating students to achieve their goal of becoming the clinical pharmacist standard defined by the revised School Education Act. Here we report the self-evaluation study based on the survey using questionnaire about a sense of achievement with Visual Analog Scales, regarding the fundamental quality as a pharmacist standard proposed by the Professional Activities Committee in the MEXT. The sample size of survey was about 600 of students studying in the Faculty of Pharmaceutical Sciences in Josai International University (JIU) and the survey was carried out during the period of March-April in 2012. The study suggested that the majority of graduates were satisfied with the new education system and marked as a well-balanced quality to be a pharmacist standard, after completing the 6-year pharmaceutical education based on "the model core-curriculum". It would be worthwhile to perform this kind of survey continuously to monitor the student's self-evaluation of a sense of achievement to verify the effectiveness of 6-year-course pharmaceutical education based on the newly establishing core curriculum in Japan.

  13. A model for forensic dental education in the predoctoral dental school curriculum.

    Science.gov (United States)

    Hermsen, Kenneth P; Johnson, J Dane

    2012-05-01

    Forensic odontologists play an important role locally and nationally in assisting in the identification of the victims of mass fatality incidents, whether natural or human-made. With the recent passage of legislation by Congress identifying dentists as a first-responder resource, knowledge of their expanding role in disaster response is particularly important. The purpose of this article is to describe the forensic dental course being taught at Creighton University School of Dentistry in Omaha, Nebraska, as a model for providing a fundamental education in forensic dentistry and disaster preparedness at the predoctoral dental level. This model is designed to 1) provide students with a broad view of forensic odontology; 2) give them a functional knowledge of the tools and techniques of the modern forensic dentist; 3) provide basic knowledge of their potential role in disaster preparedness and response; and 4) encourage students to pursue further forensic education, become active in national forensic organizations, and get involved in disaster preparedness/response in their home communities following graduation. This article includes lecture topics, demonstrations, and hands-on exercises being used at Creighton to teach students the fundamentals of forensic odontology and disaster preparedness.

  14. Exploring the Effectiveness of a Peer-Mediated Model of the PEERS Curriculum: A Pilot Randomized Control Trial.

    Science.gov (United States)

    Matthews, Nicole L; Orr, Beatriz C; Warriner, Katrina; DeCarlo, Mary; Sorensen, Mia; Laflin, Jessica; Smith, Christopher J

    2018-02-16

    This study compared immediate and 4-month outcomes among adolescents with autism spectrum disorder randomly assigned to the PEERS curriculum (n = 10), a peer mediated PEERS curriculum (n = 12), or a delayed treatment control group (n = 12). Findings suggest a modest advantage in social skills knowledge and social functioning for participants in the peer-mediated PEERS curriculum relative to Traditional PEERS, and gains in social skills knowledge, social functioning, and reductions in loneliness were maintained in one or both treatment groups at a 4-month follow-up. Typically developing peer mentors (n = 16) showed improvements in social skills knowledge and marginal improvements in autism knowledge and loneliness. Future research with a larger sample and objective outcome measures is needed.

  15. The 21st-Century Dental Curriculum: A Framework for Understanding Current Models.

    Science.gov (United States)

    Kassebaum, Denise K; Tedesco, Lisa A

    2017-08-01

    This article provides an overview of the emergence of professional education and academic dentistry, in particular into the comprehensive research university. The development of academic dentistry as a vital member of the academic health center at the research university and beyond is described. Summaries are provided of major studies and innovations in dental education models and curricula, ranging from the Gies report in 1926 to the 1995 Institute of Medicine study Dental Education at the Crossroads , the U.S. surgeon general's report on oral health in 2000, the Macy study report in 2008, and the American Dental Education Association Commission on Change and Innovation in Dental Education (ADEA CCI) series of articles published from 2005 to 2009. The article also tracks changes in number and institutional affiliation of U.S. dental schools. This article was written as part of the project "Advancing Dental Education in the 21 st Century."

  16. Taking it to the streets: The case for modeling in the geosciences undergraduate curriculum

    Science.gov (United States)

    Campbell, Karen; Overeem, Irina; Berlin, Maureen

    2013-04-01

    The United States faces a crisis in education: a dire shortage of students sufficiently prepared in the STEM (Science, Technology, Engineering and Mathematics) disciplines to competitively enter the workforce (National Education Technology Plan, 2010). At the same time, there is increasing demand for well-trained geoscientists in a variety of careers related to the environment and natural resources. Many efforts, including the recently released Earth Science and Climate Literacy Principles, seek to promote better Earth science education, as well as to strengthen the Earth science literacy of the entire US population. Yet even those undergraduate students who choose to major in geology or related geoscience disciplines rarely acquire sufficient quantitative skills to be truly competitive graduate students or professionals. Experience with modeling, during their undergraduate careers, could greatly increase the quantitative literacy of geoscience majors and help them appreciate the real world applicability of mathematics and computational methods in their future careers in the geosciences.

  17. Medical imaging education in biomedical engineering curriculum: courseware development and application through a hybrid teaching model.

    Science.gov (United States)

    Zhao, Weizhao; Li, Xiping; Chen, Hairong; Manns, Fabrice

    2012-01-01

    Medical Imaging is a key training component in Biomedical Engineering programs. Medical imaging education is interdisciplinary training, involving physics, mathematics, chemistry, electrical engineering, computer engineering, and applications in biology and medicine. Seeking an efficient teaching method for instructors and an effective learning environment for students has long been a goal for medical imaging education. By the support of NSF grants, we developed the medical imaging teaching software (MITS) and associated dynamic assessment tracking system (DATS). The MITS/DATS system has been applied to junior and senior medical imaging classes through a hybrid teaching model. The results show that student's learning gain improved, particularly in concept understanding and simulation project completion. The results also indicate disparities in subjective perception between junior and senior classes. Three institutions are collaborating to expand the courseware system and plan to apply it to different class settings.

  18. Applying the community health worker model in dermatology: a curriculum for skin cancer prevention education training.

    Science.gov (United States)

    Jacobsen, Audrey A; Maisonet, Jezabel; Kirsner, Robert S; Strasswimmer, John

    2017-05-01

    Incidence of skin cancer is rising in Hispanic populations and minorities often have more advanced disease and experience higher mortality rates. Community health worker (CHW) programs to promote primary and secondary prevention show promise for many diseases, but an adequate training program in skin cancer prevention is not documented. We present a model for CHW specialty certification in skin cancer prevention for underserved, Hispanic communities. We designed a culturally appropriate CHW training program according to an empowerment model of education for skin cancer prevention and detection in underserved Hispanic communities. We partnered with a large nonprofit clinic in South Florida. Nineteen CHWs completed the 2-h training course. After the course, 82.4% (n = 14) strongly agreed with the statement "I feel confident I can educate others on the warning signs of melanoma." Eighty-eight percent (88.2%, n = 15) strongly agreed that they felt confident that they could educate others on the importance of sun safety. One hundred percent (n = 19) answered each question about how the sun affects the skin correctly while 84.2% (n = 16) were able to identify the "ABCDEs" of melanoma. Nearly 90% strongly agreed with "I plan to change my personal sun safety behaviors based on what I learned today". Our results indicate successful transfer of information and empowerment to CHWs with high levels of confidence. Disease specific "specialty certifications" are a component of effective CHW policies. An appropriate training tool for skin cancer education is an important addition to a growing list of CHW specialty certifications. © 2017 The International Society of Dermatology.

  19. A Numerical Study of Combined Convective and Radiative Heat Transfer in a Rocket Engine Combustion Chamber

    National Research Council Canada - National Science Library

    Savur, Mehmet

    2002-01-01

    A numerical study was conducted to predict the combined convective and radiative heat transfer rates on the walls of a small aspect ratio cylinder representative of the scaled model of a rocket engine combustion chamber...

  20. V-2 Rocket at White Sands

    Science.gov (United States)

    1946-01-01

    A V-2 rocket takes flight at White Sands, New Mexico, in 1946. The German engineers and scientists who developed the V-2 came to the United States at the end of World War II and continued rocket testing under the direction of the U. S. Army, launching more than sixty V-2s.

  1. Creating a contemporary clerkship curriculum: the flipped classroom model in emergency medicine.

    Science.gov (United States)

    Lew, Edward K

    2016-12-01

    The teaching modality of "flipping the classroom" has garnered recent attention in medical education. In this model, the lecture and homework components are reversed. The flipped classroom lends itself to more interaction in "class" and theoretically improved clinical decision-making. Data is lacking for this model for students in emergency medicine clerkships. We trialed the flipped classroom in our fourth-year student clerkship. Our aim was to learn student and faculty facilitator perceptions of the experience, as it has not been done previously in this setting. We evaluated this in two ways: (1) participant perception of the experience and (2) facilitator (EM physician educator) perception of student preparation, participation, and knowledge synthesis. With permission from its creators, we utilized an online video series derived from the Clerkship Directors in Emergency Medicine. Students were provided the link to these 1 week prior to the classroom experience as the "homework." We developed patient cases generated from the videos that we discussed during class in small-group format. Afterward, students were surveyed about the experience using four-point Likert items and free-text comments and also were evaluated by the facilitator on a nine-point scale. Forty-six clerkship students participated. Students deemed the online modules useful at 2.9 (95 % CI 2.7-3.2). Further, they reported the in-class discussion to be of high value at 3.9 (95 % CI 3.8-4.0), much preferred the flipped classroom to traditional lecturing at 3.8 (95 % CI 3.6-3.9), and rated the overall experience highly at 3.8 (95 % CI 3.7-3.9). Based on preparation, participation, and knowledge synthesis, the facilitator judged participants favorably at 7.4 (95 % CI 7.0-7.8). Students commented that the interactivity, discussion, and medical decision-making were advantages of this format. Students found high value in the flipped classroom and prefer it to traditional lecturing, citing

  2. Model for a reproducible curriculum infrastructure to provide international nurse anesthesia continuing education.

    Science.gov (United States)

    Collins, Shawn Bryant

    2011-12-01

    There are no set standards for nurse anesthesia education in developing countries, yet one of the keys to the standards in global professional practice is competency assurance for individuals. Nurse anesthetists in developing countries have difficulty obtaining educational materials. These difficulties include, but are not limited to, financial constraints, lack of anesthesia textbooks, and distance from educational sites. There is increasing evidence that the application of knowledge in developing countries is failing. One reason is that many anesthetists in developing countries are trained for considerably less than acceptable time periods and are often supervised by poorly trained practitioners, who then pass on less-than-desirable practice skills, thus exacerbating difficulties. Sustainability of development can come only through anesthetists who are both well trained and able to pass on their training to others. The international nurse anesthesia continuing education project was developed in response to the difficulty that nurse anesthetists in developing countries face in accessing continuing education. The purpose of this project was to develop a nonprofit, volunteer-based model for providing nurse anesthesia continuing education that can be reproduced and used in any developing country.

  3. Personal health records in the preclinical medical curriculum: modeling student responses in a simple educational environment utilizing Google Health.

    Science.gov (United States)

    Karamanlis, Dimokratis A; Tzitzis, Panagiotis M; Bratsas, Charalampos A; Bamidis, Panagiotis D

    2012-09-25

    Various problems concerning the introduction of personal health records in everyday healthcare practice are reported to be associated with physicians' unfamiliarity with systematic means of electronically collecting health information about their patients (e.g. electronic health records--EHRs). Such barriers may further prevent the role physicians have in their patient encounters and the influence they can have in accelerating and diffusing personal health records (PHRs) to the patient community. One way to address these problems is through medical education on PHRs in the context of EHR activities within the undergraduate medical curriculum and the medical informatics courses in specific. In this paper, the development of an educational PHR activity based on Google Health is reported. Moreover, student responses on PHR's use and utility are collected and presented. The collected responses are then modelled to relate the satisfaction level of students in such a setting to the estimation about their attitude towards PHRs in the future. The study was conducted by designing an educational scenario about PHRs, which consisted of student instruction on Google Health as a model PHR and followed the guidelines of a protocol that was constructed for this purpose. This scenario was applied to a sample of 338 first-year undergraduate medical students. A questionnaire was distributed to each one of them in order to obtain Likert-like scale data on the sample's response with respect to the PHR that was used; the data were then further analysed descriptively and in terms of a regression analysis to model hypothesised correlations. Students displayed, in general, satisfaction about the core PHR functions they used and they were optimistic about using them in the future, as they evaluated quite high up the level of their utility. The aspect they valued most in the PHR was its main role as a record-keeping tool, while their main concern was related to the negative effect their own

  4. Personal health records in the preclinical medical curriculum: modeling student responses in a simple educational environment utilizing Google Health

    Directory of Open Access Journals (Sweden)

    Karamanlis Dimokratis A

    2012-09-01

    Full Text Available Abstract Background Various problems concerning the introduction of personal health records in everyday healthcare practice are reported to be associated with physicians’ unfamiliarity with systematic means of electronically collecting health information about their patients (e.g. electronic health records - EHRs. Such barriers may further prevent the role physicians have in their patient encounters and the influence they can have in accelerating and diffusing personal health records (PHRs to the patient community. One way to address these problems is through medical education on PHRs in the context of EHR activities within the undergraduate medical curriculum and the medical informatics courses in specific. In this paper, the development of an educational PHR activity based on Google Health is reported. Moreover, student responses on PHR’s use and utility are collected and presented. The collected responses are then modelled to relate the satisfaction level of students in such a setting to the estimation about their attitude towards PHRs in the future. Methods The study was conducted by designing an educational scenario about PHRs, which consisted of student instruction on Google Health as a model PHR and followed the guidelines of a protocol that was constructed for this purpose. This scenario was applied to a sample of 338 first-year undergraduate medical students. A questionnaire was distributed to each one of them in order to obtain Likert-like scale data on the sample’s response with respect to the PHR that was used; the data were then further analysed descriptively and in terms of a regression analysis to model hypothesised correlations. Results Students displayed, in general, satisfaction about the core PHR functions they used and they were optimistic about using them in the future, as they evaluated quite high up the level of their utility. The aspect they valued most in the PHR was its main role as a record-keeping tool, while

  5. Hybrid Rocket Experiment Station for Capstone Design

    Science.gov (United States)

    Conley, Edgar; Hull, Bethanne J.

    2012-01-01

    Portable hybrid rocket motors and test stands can be seen in many papers but none have been reported on the design or instrumentation at such a small magnitude. The design of this hybrid rocket and test stand is to be small and portable (suitcase size). This basic apparatus will be used for demonstrations in rocket propulsion. The design had to include all of the needed hardware to operate the hybrid rocket unit (with the exception of the external Oxygen tank). The design of this project includes making the correlation between the rocket's thrust and its size, the appropriate transducers (physical size, resolution, range, and cost), compatability with a laptop analog card, the ease of setup, and its portability.

  6. Improving Education in Medical Statistics: Implementing a Blended Learning Model in the Existing Curriculum.

    Science.gov (United States)

    Milic, Natasa M; Trajkovic, Goran Z; Bukumiric, Zoran M; Cirkovic, Andja; Nikolic, Ivan M; Milin, Jelena S; Milic, Nikola V; Savic, Marko D; Corac, Aleksandar M; Marinkovic, Jelena M; Stanisavljevic, Dejana M

    2016-01-01

    Although recent studies report on the benefits of blended learning in improving medical student education, there is still no empirical evidence on the relative effectiveness of blended over traditional learning approaches in medical statistics. We implemented blended along with on-site (i.e. face-to-face) learning to further assess the potential value of web-based learning in medical statistics. This was a prospective study conducted with third year medical undergraduate students attending the Faculty of Medicine, University of Belgrade, who passed (440 of 545) the final exam of the obligatory introductory statistics course during 2013-14. Student statistics achievements were stratified based on the two methods of education delivery: blended learning and on-site learning. Blended learning included a combination of face-to-face and distance learning methodologies integrated into a single course. Mean exam scores for the blended learning student group were higher than for the on-site student group for both final statistics score (89.36±6.60 vs. 86.06±8.48; p = 0.001) and knowledge test score (7.88±1.30 vs. 7.51±1.36; p = 0.023) with a medium effect size. There were no differences in sex or study duration between the groups. Current grade point average (GPA) was higher in the blended group. In a multivariable regression model, current GPA and knowledge test scores were associated with the final statistics score after adjusting for study duration and learning modality (plearning environments for teaching medical statistics to undergraduate medical students. Blended and on-site training formats led to similar knowledge acquisition; however, students with higher GPA preferred the technology assisted learning format. Implementation of blended learning approaches can be considered an attractive, cost-effective, and efficient alternative to traditional classroom training in medical statistics.

  7. Improving Education in Medical Statistics: Implementing a Blended Learning Model in the Existing Curriculum

    Science.gov (United States)

    Milic, Natasa M.; Trajkovic, Goran Z.; Bukumiric, Zoran M.; Cirkovic, Andja; Nikolic, Ivan M.; Milin, Jelena S.; Milic, Nikola V.; Savic, Marko D.; Corac, Aleksandar M.; Marinkovic, Jelena M.; Stanisavljevic, Dejana M.

    2016-01-01

    Background Although recent studies report on the benefits of blended learning in improving medical student education, there is still no empirical evidence on the relative effectiveness of blended over traditional learning approaches in medical statistics. We implemented blended along with on-site (i.e. face-to-face) learning to further assess the potential value of web-based learning in medical statistics. Methods This was a prospective study conducted with third year medical undergraduate students attending the Faculty of Medicine, University of Belgrade, who passed (440 of 545) the final exam of the obligatory introductory statistics course during 2013–14. Student statistics achievements were stratified based on the two methods of education delivery: blended learning and on-site learning. Blended learning included a combination of face-to-face and distance learning methodologies integrated into a single course. Results Mean exam scores for the blended learning student group were higher than for the on-site student group for both final statistics score (89.36±6.60 vs. 86.06±8.48; p = 0.001) and knowledge test score (7.88±1.30 vs. 7.51±1.36; p = 0.023) with a medium effect size. There were no differences in sex or study duration between the groups. Current grade point average (GPA) was higher in the blended group. In a multivariable regression model, current GPA and knowledge test scores were associated with the final statistics score after adjusting for study duration and learning modality (plearning environments for teaching medical statistics to undergraduate medical students. Blended and on-site training formats led to similar knowledge acquisition; however, students with higher GPA preferred the technology assisted learning format. Implementation of blended learning approaches can be considered an attractive, cost-effective, and efficient alternative to traditional classroom training in medical statistics. PMID:26859832

  8. A Study of Classics-Reading Curriculum, Classics-Reading Promotion, and Classics-Reading Effect Modeling Exploration in Elementary Schools

    Directory of Open Access Journals (Sweden)

    Chuen-An Tang

    2014-01-01

    Full Text Available The purposes of this study are to test reliabilities and validities of classics-reading curriculum (CRC scale, classics-reading promotion (CRP scale, and classics-reading effect (CRE scale and to examine the relationships between CRC, CRP, and CRE in elementary schools through applying CORPS framework. The pilot sample and formal sample contain 141 and 500 participants from elementary school faculties and classics-reading volunteers in the north, central, south, and east regions of Taiwan. The findings indicate that Cronbach α coefficients of curriculum cognition (CC, curriculum teaching (CT, inside-school promotion (IP, outside-school promotion (EP, learning effect (LE, and class management effect (CME subscales are .88, .85, .93, .91, .91, .94, respectively, through exploratory factor analysis and they have good internal reliabilities and construct validities, respectively, through confirmatory factor analysis. Moreover, CC, CT, IP, and EP have positive influences on LE (standardized coefficients .34, .25, .14, and .22 and on CME (standardized coefficients .41, .14, .14, and .20, respectively. CC, CT, IP, and EP can explain 69% of LE and 61% of CME. The model is supported by the data. Lastly, this study proposes some suggestions regarding the classics-reading education for elementary schools.

  9. Observation and simulation of the ionosphere disturbance waves triggered by rocket exhausts

    Science.gov (United States)

    Lin, Charles C. H.; Chen, Chia-Hung; Matsumura, Mitsuru; Lin, Jia-Ting; Kakinami, Yoshihiro

    2017-08-01

    Observations and theoretical modeling of the ionospheric disturbance waves generated by rocket launches are investigated. During the rocket passage, time rate change of total electron content (rTEC) enhancement with the V-shape shock wave signature is commonly observed, followed by acoustic wave disturbances and region of negative rTEC centered along the trajectory. Ten to fifteen min after the rocket passage, delayed disturbance waves appeared and propagated along direction normal to the V-shape wavefronts. These observation features appeared most prominently in the 2016 North Korea rocket launch showing a very distinct V-shape rTEC enhancement over enormous areas along the southeast flight trajectory despite that it was also appeared in the 2009 North Korea rocket launch with the eastward flight trajectory. Numerical simulations using the physical-based nonlinear and nonhydrostatic coupled model of neutral atmosphere and ionosphere reproduce promised results in qualitative agreement with the characteristics of ionospheric disturbance waves observed in the 2009 event by considering the released energy of the rocket exhaust as the disturbance source. Simulations reproduce the shock wave signature of electron density enhancement, acoustic wave disturbances, the electron density depletion due to the rocket-induced pressure bulge, and the delayed disturbance waves. The pressure bulge results in outward neutral wind flows carrying neutrals and plasma away from it and leading to electron density depletions. Simulations further show, for the first time, that the delayed disturbance waves are produced by the surface reflection of the earlier arrival acoustic wave disturbances.

  10. Model Wind Turbine Design in a Project-Based Middle School Engineering Curriculum Built on State Frameworks

    Science.gov (United States)

    Cogger, Steven D.; Miley, Daniel H.

    2012-01-01

    This paper proposes that project-based active learning is a key part of engineering education at the middle school level. One project from a comprehensive middle school engineering curriculum developed by the authors is described to show how active learning and state frameworks can coexist. The theoretical basis for learning and assessment in a…

  11. Service Learning and the Core Curriculum: Two Models for Doing Theology as Service Learning in the Core

    Science.gov (United States)

    McMahon, Christopher

    2014-01-01

    In principle, theology ought to play a decisive role in the mission and identity of Catholic colleges and universities, but theology's role often comes under fire from students and other constituencies who consider theology an uncritical intrusion into the curriculum or a holdover from a bygone era. This essay reflects on the role of theology…

  12. A Recommendation for a Professional Focus Area in Data Management for the IS2002 Information Systems Model Curriculum

    Science.gov (United States)

    Longenecker, Herbert E., Jr.; Yarbrough, David M.; Feinstein, David L.

    2010-01-01

    IS2002 has become a well defined standard for information systems curricula. The Data Management Association (DAMA 2006) curriculum framework defines a body of knowledge that points to a skill set that can enhance IS2002. While data management professionals are highly skilled individuals requiring as much as a decade of relevant experience before…

  13. Chemistry, Life, the Universe, and Everything: A New Approach to General Chemistry, and a Model for Curriculum Reform

    Science.gov (United States)

    Cooper, Melanie; Klymkowsky, Michael

    2013-01-01

    The history of general chemistry is one of almost constant calls for reform, yet over the past 60 years little of substance has changed. Those reforms that have been implemented are almost entirely concerned with how the course is taught, rather than what is to be learned. Here we briefly discuss the history of the general chemistry curriculum and…

  14. A "Resident-as-Teacher" Curriculum Using a Flipped Classroom Approach: Can a Model Designed for Efficiency Also Be Effective?

    Science.gov (United States)

    Chokshi, Binny D; Schumacher, Heidi K; Reese, Kristen; Bhansali, Priti; Kern, Jeremy R; Simmens, Samuel J; Blatt, Benjamin; Greenberg, Larrie W

    2017-04-01

    The Accreditation Council for Graduate Medical Education requires training that enhances resident teaching skills. Despite this requirement, many residency training programs struggle to implement effective resident-as-teacher (RAT) curricula, particularly within the context of the 80-hour resident workweek. In 2013, the authors developed and evaluated an intensive one-day RAT curriculum using a flipped classroom approach. Twenty-nine second-year residents participated in daylong RAT sessions. The curriculum included four 1-hour workshops focusing on adult learning principles, giving feedback, teaching a skill, and orienting a learner. Each workshop, preceded by independent reading, featured peer co-teaching, application, and feedback. The authors evaluated the curriculum using pre- and postworkshop objective structured teaching examinations (OSTEs) and attitudinal and self-efficacy teaching questionnaires. Residents demonstrated statistically significant improvements in performance between pre- and postworkshop OSTEs on each of three core skills: giving feedback (P = .005), orienting a learner (P flipped classroom approach is an efficient and effective method for training residents to improve teaching skills, especially in an era of work hour restrictions. They have committed to the continuation of this curriculum and are planning to include assessment of its long-term effects on resident behavior change and educational outcomes.

  15. What to Consider When Preparing a Model Core Curriculum for GIS Ethics: Objectives, Methods, and a Sketch of Content

    Science.gov (United States)

    Davis, Michael

    2014-01-01

    The purpose of this article is to provide a summary of what is known about teaching ethics in engineering, science, and related disciplines. Such a summary should provide a useful starting point for preparation of a detailed curriculum for teaching the ethics of geo-coded information systems broadly understood ("GIS ethics" for short).…

  16. Development of a Modern Curriculum for Engineering Design Graphics.

    Science.gov (United States)

    Barr, Ronald E.; Juricic, Davor

    1991-01-01

    A course curriculum model that shows how modern engineering design graphics can be used to conceptualize, develop, analyze, and communicate engineering designs is presented. Background studies, early investigations, and a weekly curriculum outline of the course are provided. (KR)

  17. The Questions of Curriculum

    Science.gov (United States)

    Dillon, J. T.

    2009-01-01

    What are the basic things that compose curriculum, and what are the questions that may be posed about these things? Joseph Schwab's conception of curriculum is used to introduce a scheme of questions concerning the nature, elements, and practice of curriculum. Formulations of questions by other curriculum theorists are reviewed and analysed in…

  18. Computational study of variable area ejector rocket flowfields

    Science.gov (United States)

    Etele, Jason

    Access to space has always been a scientific priority for countries which can afford the prohibitive costs associated with launch. However, the large scale exploitation of space by the business community will require the cost of placing payloads into orbit be dramatically reduced for space to become a truly profitable commodity. To this end, this work focuses on a next generation propulsive technology called the Rocket Based Combined Cycle (RBCC) engine in which rocket, ejector, ramjet, and scramjet cycles operate within the same engine environment. Using an in house numerical code solving the axisymmetric version of the Favre averaged Navier Stokes equations (including the Wilcox ko turbulence model with dilatational dissipation) a systematic study of various ejector designs within an RBCC engine is undertaken. It is shown that by using a central rocket placed along the axisymmetric axis in combination with an annular rocket placed along the outer wall of the ejector, one can obtain compression ratios of approximately 2.5 for the case where both the entrained air and rocket exhaust mass flows are equal. Further, it is shown that constricting the exit area, and the manner in which this constriction is performed, has a significant positive impact on the compression ratio. For a decrease in area of 25% a purely conical ejector can increase the compression ratio by an additional 23% compared to an equal length unconstricted ejector. The use of a more sharply angled conical section followed by a cylindrical section to maintain equivalent ejector lengths can further increase the compression ratio by 5--7% for a total increase of approximately 30%.

  19. Rockets for Extended Source Soft X-ray Spectroscopy

    Science.gov (United States)

    McEntaffer, Randall

    The soft X-ray background surrounds our local galactic environment yet very little is known about the physical characteristics of this plasma. A high-resolution spectrum could unlock the properties of this million degree gas but the diffuse, low intensity nature of the background have made it difficult to observe, especially with a dispersive spectrograph. Previous observations have relied on X-ray detector energy resolution which produces poorly defined spectra that are poorly fit by complex plasma models. Here we propose a series of suborbital rocket flights that will begin the characterization of this elusive source through high-resolution X-ray grating spectroscopy. The rocket-based spectrograph can resolve individual emission lines over the soft X-ray band and place tight constraints on the temperature, density, abundance, ionization state and age of the plasma. These payloads will draw heavily from the heritage gained from previous rocket missions, while also benefiting from related NASA technology development programs. The Pennsylvania State University (PSU) team has a history of designing and flying spectrometer components onboard rockets while also being scientific leaders in the field of diffuse soft X-ray astronomy. The PSU program will provide hands-on training of young scientists in the techniques of instrumental and observational X-ray astronomy. The proposed rocket program will also expose these researchers to a full experiment cycle: design, fabrication, tolerance analysis, assembly, flight-qualification, calibration, integration, launch, and data analysis; using a combination of technologies suitable for adaptation to NASA's major missions. The PSU program in suborbital X-ray astronomy represents an exciting mix of compelling science, heritage, cutting-edge technology development, and training of future scientists.

  20. Flutter Analysis of RX-420 Balistic Rocket Fin Involving Rigid Body Modes of Rocket Structures

    Directory of Open Access Journals (Sweden)

    Novi Andria

    2013-03-01

    Full Text Available Flutter is a phenomenon that has brought a catastrophic failure to the flight vehicle structure. In this experiment, flutter was analyzed for its symmetric and antisymmetric configuration to understand the effect of rocket rigid modes to the fin flutter characteristic. This research was also expected to find out the safety level of RX-420 structure design. The analysis was performed using half rocket model. Fin structure used in this research was a fin which has semispan 600 mm, thickness 12 mm, chord root 700 mm, chord tip 400 mm, made by Al 6061-T651, double spar configuration with skin thickness of 2 mm. Structural dynamics and flutter stability were analyzed using finite element software implemented on MSC. Nastran. The analysis shows that the antisymmetric flutter mode is more critical than symmetric flutter mode. At sea level altitude, antisymmetric flutter occurs at 6.4 Mach, and symmetric flutter occurs at 10.15 Mach. Compared to maximum speed of RX-420 which is 4.5 Mach at altitude 11 km or equivalent to 2.1 Mach at sea level, it can be concluded that the RX-420 structure design is safe, and flutter will not occur during flight.

  1. Combustion oscillation study in a kerosene fueled rocket-based combined-cycle engine combustor

    Science.gov (United States)

    Huang, Zhi-Wei; He, Guo-Qiang; Qin, Fei; Xue, Rui; Wei, Xiang-Geng; Shi, Lei

    2016-12-01

    This study reports the combustion oscillation features in a three-dimensional (3D) rocket-based combined-cycle (RBCC) engine combustor under flight Mach number (Mflight) 3.0 conditions both experimentally and numerically. Experiment is performed on a direct-connect ground test facility, which measures the wall pressure along the flow-path. High-speed imaging of the flame luminosity and schlieren is carried out at exit of the primary rocket. Compressible reactive large eddy simulation (LES) with reduced chemical kinetics of a surrogate model for kerosene is performed to further understand the combustion oscillation mechanisms in the combustor. LES results are validated with experimental data by the time-averaged and root mean square (RMS) pressure values, and show acceptable agreement. Effects of the primary rocket jet on pressure oscillation in the combustor are analyzed. Relation of the high speed rocket jet oscillation, which is thought to among the most probable sources of combustion oscillation, with the RBCC combustor is recognized. Results reveal that the unsteady over-expanded rocket jet has significant impacts on the combustion oscillation feature of the RBCC combustor, which is different from a thermo-acoustics type oscillation. The rocket jet/air inflow physical interactions under different rocket jet expansion degrees are experimentally studied.

  2. Ignition and flame stabilization of a strut-jet RBCC combustor with small rocket exhaust.

    Science.gov (United States)

    Hu, Jichao; Chang, Juntao; Bao, Wen

    2014-01-01

    A Rocket Based Combined Cycle combustor model is tested at a ground direct connected rig to investigate the flame holding characteristics with a small rocket exhaust using liquid kerosene. The total temperature and the Mach number of the vitiated air flow, at exit of the nozzle are 1505 K and 2.6, respectively. The rocket base is embedded in a fuel injecting strut and mounted in the center of the combustor. The wall of the combustor is flush, without any reward step or cavity, so the strut-jet is used to make sure of the flame stabilization of the second combustion. Mass flow rate of the kerosene and oxygen injected into the rocket is set to be a small value, below 10% of the total fuel when the equivalence ratio of the second combustion is 1. The experiment has generated two different kinds of rocket exhaust: fuel rich and pure oxygen. Experiment result has shown that, with a relative small total mass flow rate of the rocket, the fuel rich rocket plume is not suitable for ignition and flame stabilization, while an oxygen plume condition is suitable. Then the paper conducts a series of experiments to investigate the combustion characteristics under this oxygen pilot method and found that the flame stabilization characteristics are different at different combustion modes.

  3. Hydrocarbon Rocket Technology Impact Forecasting

    Science.gov (United States)

    Stuber, Eric; Prasadh, Nishant; Edwards, Stephen; Mavris, Dimitri N.

    2012-01-01

    Forecasting method is a normative forecasting technique that allows the designer to quantify the effects of adding new technologies on a given design. This method can be used to assess and identify the necessary technological improvements needed to close the gap that exists between the current design and one that satisfies all constraints imposed on the design. The TIF methodology allows for more design knowledge to be brought to the earlier phases of the design process, making use of tools such as Quality Function Deployments, Morphological Matrices, Response Surface Methodology, and Monte Carlo Simulations.2 This increased knowledge allows for more informed decisions to be made earlier in the design process, resulting in shortened design cycle time. This paper will investigate applying the TIF method, which has been widely used in aircraft applications, to the conceptual design of a hydrocarbon rocket engine. In order to reinstate a manned presence in space, the U.S. must develop an affordable and sustainable launch capability. Hydrocarbon-fueled rockets have drawn interest from numerous major government and commercial entities because they offer a low-cost heavy-lift option that would allow for frequent launches1. However, the development of effective new hydrocarbon rockets would likely require new technologies in order to overcome certain design constraints. The use of advanced design methods, such as the TIF method, enables the designer to identify key areas in need of improvement, allowing one to dial in a proposed technology and assess its impact on the system. Through analyses such as this one, a conceptual design for a hydrocarbon-fueled vehicle that meets all imposed requirements can be achieved.

  4. Analysis of supercritical methane in rocket engine cooling channels

    OpenAIRE

    Denies, L.; Zandbergen, B.T.C.; Natale, P.; Ricci, D.; Invigorito, M.

    2016-01-01

    Methane is a promising propellant for liquid rocket engines. As a regenerative coolant, it would be close to its critical point, complicating cooling analysis. This study encompasses the development and validation of a new, open-source computational fluid dynamics (CFD) method for analysis of methane cooling channels. Validation with experimental data has been carried out, showing an accuracy within 20 K for wall temperature and 10% for pressure drop. It is shown that the turbulence model has...

  5. [Study on rapid determination and analysis of rocket kerosene by near infrared spectrum and chemometrics].

    Science.gov (United States)

    Xia, Ben-Li; Cong, Ji-Xin; Li, Xia; Wang, Xuan-Jun

    2011-06-01

    The rocket kerosene quality properties such as density, distillation range, viscosity and iodine value were successfully measured based on their near-infrared spectrum (NIRS) and chemometrics. In the present paper, more than 70 rocket kerosene samples were determined by near infrared spectrum, the models were built using the partial least squares method within the appropriate wavelength range. The correlation coefficients (R2) of every rocket kerosene's quality properties ranged from 0.862 to 0.999. Ten unknown samples were determined with the model, and the result showed that the prediction accuracy of near infrared spectrum method accords with standard analysis requirements. The new method is well suitable for replacing the traditional standard method to rapidly determine the properties of the rocket kerosene.

  6. Use of the Iowa Model of Research in Practice as a Curriculum Framework for Doctor of Nursing Practice (DNP) Project Completion.

    Science.gov (United States)

    Lloyd, Susan T; D'Errico, Ellen; Bristol, Shirley T

    2016-01-01

    Doctoral education requires academic motivation and persistence on the part of nursing students; commitment to the process is essential and should be linked to programmatic structure. Programmatic issues in doctor of nursing practice (DNP) programs may be barriers to completion of the final project and lead to attrition. A large, private health care university developed an infrastructure for the DNP curriculum and final project utilizing the Iowa Model of Research in Practice. The purpose was to ensure competency fulfillment, retention and timely completion, and implementation of evidence-based practice and translation science utilizing a leadership approach. The program has experienced a high completion rate to date.

  7. A Political Analysis of Curriculum Change.

    Science.gov (United States)

    Wolf-Wilets, Vivian C.; Nugent, L. Catherine

    1979-01-01

    Presents an analysis of faculty dynamics in nursing curriculum situations based on the social theories of conflict, community power, and interest-group to form a political model representing stages in policy development. These stages are applied to curriculum change examples to show how social conflict and power plays cause problems. (MF)

  8. Development of Kabila rocket: A radioisotope heated thermionic plasma rocket engine

    OpenAIRE

    Mboyi, Kalomba; Ren, Junxue; Liu, Yu

    2015-01-01

    A new type of plasma rocket engine, the Kabila rocket, using a radioisotope heated thermionic heating chamber instead of a conventional combustion chamber or catalyst bed is introduced and it achieves specific impulses similar to the ones of conventional solid and bipropellant rockets. Curium-244 is chosen as a radioisotope heat source and a thermal reductive layer is also used to obtain precise thermionic emissions. The self-sufficiency principle is applied by simultaneously heating up the e...

  9. Two stage turbine for rockets

    Science.gov (United States)

    Veres, Joseph P.

    1993-01-01

    The aerodynamic design and rig test evaluation of a small counter-rotating turbine system is described. The advanced turbine airfoils were designed and tested by Pratt & Whitney. The technology represented by this turbine is being developed for a turbopump to be used in an advanced upper stage rocket engine. The advanced engine will use a hydrogen expander cycle and achieve high performance through efficient combustion of hydrogen/oxygen propellants, high combustion pressure, and high area ratio exhaust nozzle expansion. Engine performance goals require that the turbopump drive turbines achieve high efficiency at low gas flow rates. The low mass flow rates and high operating pressures result in very small airfoil heights and diameters. The high efficiency and small size requirements present a challenging turbine design problem. The shrouded axial turbine blades are 50 percent reaction with a maximum thickness to chord ratio near 1. At 6 deg from the tangential direction, the nozzle and blade exit flow angles are well below the traditional design minimum limits. The blade turning angle of 160 deg also exceeds the maximum limits used in traditional turbine designs.

  10. NASA Space Rocket Logistics Challenges

    Science.gov (United States)

    Neeley, James R.; Jones, James V.; Watson, Michael D.; Bramon, Christopher J.; Inman, Sharon K.; Tuttle, Loraine

    2014-01-01

    The Space Launch System (SLS) is the new NASA heavy lift launch vehicle and is scheduled for its first mission in 2017. The goal of the first mission, which will be uncrewed, is to demonstrate the integrated system performance of the SLS rocket and spacecraft before a crewed flight in 2021. SLS has many of the same logistics challenges as any other large scale program. Common logistics concerns for SLS include integration of discreet programs geographically separated, multiple prime contractors with distinct and different goals, schedule pressures and funding constraints. However, SLS also faces unique challenges. The new program is a confluence of new hardware and heritage, with heritage hardware constituting seventy-five percent of the program. This unique approach to design makes logistics concerns such as commonality especially problematic. Additionally, a very low manifest rate of one flight every four years makes logistics comparatively expensive. That, along with the SLS architecture being developed using a block upgrade evolutionary approach, exacerbates long-range planning for supportability considerations. These common and unique logistics challenges must be clearly identified and tackled to allow SLS to have a successful program. This paper will address the common and unique challenges facing the SLS programs, along with the analysis and decisions the NASA Logistics engineers are making to mitigate the threats posed by each.

  11. Fundamentals of aircraft and rocket propulsion

    CERN Document Server

    El-Sayed, Ahmed F

    2016-01-01

    This book provides a comprehensive basics-to-advanced course in an aero-thermal science vital to the design of engines for either type of craft. The text classifies engines powering aircraft and single/multi-stage rockets, and derives performance parameters for both from basic aerodynamics and thermodynamics laws. Each type of engine is analyzed for optimum performance goals, and mission-appropriate engines selection is explained. Fundamentals of Aircraft and Rocket Propulsion provides information about and analyses of: thermodynamic cycles of shaft engines (piston, turboprop, turboshaft and propfan); jet engines (pulsejet, pulse detonation engine, ramjet, scramjet, turbojet and turbofan); chemical and non-chemical rocket engines; conceptual design of modular rocket engines (combustor, nozzle and turbopumps); and conceptual design of different modules of aero-engines in their design and off-design state. Aimed at graduate and final-year undergraduate students, this textbook provides a thorough grounding in th...

  12. Alternate Propellant Thermal Rocket, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The Alternate Propellant Thermal Rocket (APTR) is a novel concept for propulsion of space exploration or orbit transfer vehicles. APTR propulsion is provided by...

  13. High Pressure Pumps for Rocket Motors

    National Research Council Canada - National Science Library

    Barske, U. M

    1950-01-01

    .... A simplified type of open impeller centrifugal pump which has been operated successfully in some short and medium range rockets is recommended as the most suitable type at the present state of development...

  14. The Spanish national programme of balloons and sounding rockets

    International Nuclear Information System (INIS)

    Casas, J.; Pueyo, L.

    1978-01-01

    The main points of the Spanish scientific programme are briefly described: CONIE/NASA cooperative project on meteorological sounding rocket launchings; ozonospheric programme; CONIE/NASA/CNES cooperative ionospheric sounding rocket project; D-layer research; rocket infrared dayglow measurements; ultraviolet astronomy research; cosmic ray research. The schedule of sounding rocket launchings at El Arenosillo station during 1977 is given

  15. 21 CFR 866.4830 - Rocket immunoelectro-phoresis equipment.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Rocket immunoelectro-phoresis equipment. 866.4830... § 866.4830 Rocket immunoelectro-phoresis equipment. (a) Identification. Rocket immunoelectrophoresis... called rocket immunoelectrophoresis. In this procedure, an electric current causes the protein in...

  16. Numerical Study on Similarity of Plume’s Infrared Radiation from Reduced Scaling Solid Rocket

    Directory of Open Access Journals (Sweden)

    Xiaoying Zhang

    2015-01-01

    Full Text Available Similarity of plume radiation between reduced scaling solid rocket models and full scale ones in ground conditions has been taken for investigation. Flow and radiation of plume from solid rockets with scaling ratio from 0.1 to 1 have been computed. The radiative transfer equation (RTE is solved by the finite volume method (FVM in infrared band 2~6 μm. The spectral characteristics of plume gases have been calculated with the weighted-sum-of-gray-gas (WSGG model, and those of the Al2O3 particles have been solved by the Mie scattering model. Our research shows that, with the decreasing scaling ratio of the rocket engine, the radiation intensity of the plume decreases with 1.5~2.5 power of the scaling ratio. The infrared radiation of the plume gases shows a strong spectral dependency, while that of the Al2O3 particles shows grey property. Spectral radiation intensity of the high temperature core of the solid rocket plume increases greatly in the peak absorption spectrum of plume gases. Al2O3 particle is the major radiation composition in the rocket plume, whose scattering coefficient is much larger than its absorption coefficient. There is good similarity between spectral variations of plumes from different scaling solid rockets. The directional plume radiation rises with the increasing azimuth angle.

  17. Solid rocket technology advancements for space tug and IUS applications

    Science.gov (United States)

    Ascher, W.; Bailey, R. L.; Behm, J. W.; Gin, W.

    1975-01-01

    In order for the shuttle tug or interim upper stage (IUS) to capture all the missions in the current mission model for the tug and the IUS, an auxiliary or kick stage, using a solid propellant rocket motor, is required. Two solid propellant rocket motor technology concepts are described. One concept, called the 'advanced propulsion module' motor, is an 1800-kg, high-mass-fraction motor, which is single-burn and contains Class 2 propellent. The other concept, called the high energy upper stage restartable solid, is a two-burn (stop-restartable on command) motor which at present contains 1400 kg of Class 7 propellant. The details and status of the motor design and component and motor test results to date are presented, along with the schedule for future work.

  18. Nitrous Oxide/Paraffin Hybrid Rocket Engines

    Science.gov (United States)

    Zubrin, Robert; Snyder, Gary

    2010-01-01

    Nitrous oxide/paraffin (N2OP) hybrid rocket engines have been invented as alternatives to other rocket engines especially those that burn granular, rubbery solid fuels consisting largely of hydroxyl- terminated polybutadiene (HTPB). Originally intended for use in launching spacecraft, these engines would also be suitable for terrestrial use in rocket-assisted takeoff of small airplanes. The main novel features of these engines are (1) the use of reinforced paraffin as the fuel and (2) the use of nitrous oxide as the oxidizer. Hybrid (solid-fuel/fluid-oxidizer) rocket engines offer advantages of safety and simplicity over fluid-bipropellant (fluid-fuel/fluid-oxidizer) rocket en - gines, but the thrusts of HTPB-based hybrid rocket engines are limited by the low regression rates of the fuel grains. Paraffin used as a solid fuel has a regression rate about 4 times that of HTPB, but pure paraffin fuel grains soften when heated; hence, paraffin fuel grains can, potentially, slump during firing. In a hybrid engine of the present type, the paraffin is molded into a 3-volume-percent graphite sponge or similar carbon matrix, which supports the paraffin against slumping during firing. In addition, because the carbon matrix material burns along with the paraffin, engine performance is not appreciably degraded by use of the matrix.

  19. Framework for a Knowledge Management System for Curriculum Development Process

    OpenAIRE

    Seema A. Tarnekar

    2014-01-01

    In this paper, a framework to facilitate development of knowledge management (KM) system for curriculum development process is suggested. It was validated through experts' opinions with thirty two experts. The components of the framework were supported by the experts by emphasizing their necessity and importance in the curriculum development process. Some model curricula and related guidelines were studied to identify components of good curriculum. The curriculum development process was studi...

  20. Expert System Architecture for Rocket Engine Numerical Simulators: A Vision

    Science.gov (United States)

    Mitra, D.; Babu, U.; Earla, A. K.; Hemminger, Joseph A.

    1998-01-01

    Simulation of any complex physical system like rocket engines involves modeling the behavior of their different components using mostly numerical equations. Typically a simulation package would contain a set of subroutines for these modeling purposes and some other ones for supporting jobs. A user would create an input file configuring a system (part or whole of a rocket engine to be simulated) in appropriate format understandable by the package and run it to create an executable module corresponding to the simulated system. This module would then be run on a given set of input parameters in another file. Simulation jobs are mostly done for performance measurements of a designed system, but could be utilized for failure analysis or a design job such as inverse problems. In order to use any such package the user needs to understand and learn a lot about the software architecture of the package, apart from being knowledgeable in the target domain. We are currently involved in a project in designing an intelligent executive module for the rocket engine simulation packages, which would free any user from this burden of acquiring knowledge on a particular software system. The extended abstract presented here will describe the vision, methodology and the problems encountered in the project. We are employing object-oriented technology in designing the executive module. The problem is connected to the areas like the reverse engineering of any simulation software, and the intelligent systems for simulation.

  1. An integrated model for developing research skills in an undergraduate medical curriculum: appraisal of an approach using student selected components.

    Science.gov (United States)

    Riley, Simon C; Morton, Jeremy; Ray, David C; Swann, David G; Davidson, Donald J

    2013-09-01

    Student selected components (SSCs), at that time termed special study modules, were arguably the most innovative element in Tomorrow's Doctors (1993), the document from the General Medical Council that initiated the modernization of medical curricula in the UK. SSCs were proposed to make up one-third of the medical curriculum and provide students with choice, whilst allowing individual schools autonomy in how SSCs were utilized. In response, at the University of Edinburgh the undergraduate medical curriculum provides an integrated and sequential development and assessment of research skill learning outcomes, for all students in the SSC programme. The curriculum contains SSCs which provide choice to students in all 5 years. There are four substantial timetabled SSCs where students develop research skills in a topic and speciality of their choice. These SSCs are fully integrated and mapped with core learning outcomes and assessment, particularly with the 'Evidence-Based Medicine and Research' programme theme. These research skills are developed incrementally and applied fully in a research project in the fourth year. One-third of students also perform an optional intercalated one-year honours programme between years 2 and 3, usually across a wide range of honours schools at the biomedical science interface. Student feedback is insightful and demonstrates perceived attainment of research competencies. The establishment of these competencies is discussed in the context of enabling junior graduate doctors to be effective and confident at utilizing their research skills to effectively practice evidence-based medicine. This includes examining their own practice through clinical audit, developing an insight into the complexity of the evidence base and uncertainty, and also gaining a view into a career as a clinical academic.

  2. Into the Curriculum.

    Science.gov (United States)

    School Library Media Activities Monthly, 1991

    1991-01-01

    Provides fully developed library media activities designed for specific curriculum units. Curriculum areas represented include art (wire sculpture); mathematics (place values); reading and language arts (poetry); science (properties of chemical elements); and social studies (famous women, and American history). (LRW)

  3. Analysis of film cooling in rocket nozzles

    Science.gov (United States)

    Woodbury, Keith A.

    1992-01-01

    Computational Fluid Dynamics (CFD) programs are customarily used to compute details of a flow field, such as velocity fields or species concentrations. Generally they are not used to determine the resulting conditions at a solid boundary such as wall shear stress or heat flux. However, determination of this information should be within the capability of a CFD code, as the code supposedly contains appropriate models for these wall conditions. Before such predictions from CFD analyses can be accepted, the credibility of the CFD codes upon which they are based must be established. This report details the progress made in constructing a CFD model to predict the heat transfer to the wall in a film cooled rocket nozzle. Specifically, the objective of this work is to use the NASA code FDNS to predict the heat transfer which will occur during the upcoming hot-firing of the Pratt & Whitney 40K subscale nozzle (1Q93). Toward this end, an M = 3 wall jet is considered, and the resulting heat transfer to the wall is computed. The values are compared against experimental data available in Reference 1. Also, FDNS's ability to compute heat flux in a reacting flow will be determined by comparing the code's predictions against calorimeter data from the hot firing of a 40K combustor. The process of modeling the flow of combusting gases through the Pratt & Whitney 40K subscale combustor and nozzle is outlined. What follows in this report is a brief description of the FDNS code, with special emphasis on how it handles solid wall boundary conditions. The test cases and some FDNS solution are presented next, along with comparison to experimental data. The process of modeling the flow through a chamber and a nozzle using the FDNS code will also be outlined.

  4. Software Estimates Costs of Testing Rocket Engines

    Science.gov (United States)

    Smith, C. L.

    2003-01-01

    Simulation-Based Cost Model (SiCM), a discrete event simulation developed in Extend , simulates pertinent aspects of the testing of rocket propulsion test articles for the purpose of estimating the costs of such testing during time intervals specified by its users. A user enters input data for control of simulations; information on the nature of, and activity in, a given testing project; and information on resources. Simulation objects are created on the basis of this input. Costs of the engineering-design, construction, and testing phases of a given project are estimated from numbers and labor rates of engineers and technicians employed in each phase, the duration of each phase; costs of materials used in each phase; and, for the testing phase, the rate of maintenance of the testing facility. The three main outputs of SiCM are (1) a curve, updated at each iteration of the simulation, that shows overall expenditures vs. time during the interval specified by the user; (2) a histogram of the total costs from all iterations of the simulation; and (3) table displaying means and variances of cumulative costs for each phase from all iterations. Other outputs include spending curves for each phase.

  5. Curriculum Development: Teacher Involvement in Curriculum Development

    Science.gov (United States)

    Alsubaie, Merfat Ayesh

    2016-01-01

    In order for curriculum development to be effective and schools to be successful, teachers must be involved in the development process. An effective curriculum should reflect the philosophy, goals, objectives, learning experiences, instructional resources, and assessments that comprise a specific educational program ("Guide to curriculum…

  6. School Curriculum Committee: Its Role In Curriculum ...

    African Journals Online (AJOL)

    Moreover, the Regional Education Bureau, the Zonal Education Department or the school should give orientation about the roles and responsibilities of the school curriculum committee members, and the purpose of supervision for principals, department heads, and supervisor, allocate budget for school curriculum ...

  7. Curriculum Evaluation in Greece

    Science.gov (United States)

    Krikas, Vangelis

    2009-01-01

    The role of curriculum in the official educational process is widely recognized by the international scientific community. Beginning in the 19th century, and perhaps even earlier, curriculum research began, not only to be systematized, but to also constitute an autonomous field of study. On the other hand, curriculum evaluation has captured the…

  8. Curriculum Integration: An Overview

    Science.gov (United States)

    Wall, Amanda; Leckie, Alisa

    2017-01-01

    Curriculum integration is a tenet of middle level education. "This We Believe," the position paper of the Association for Middle Level Education, advocates for curriculum that is exploratory, relevant, integrative, and meaningful for young adolescents. Teachers can integrate curriculum across content areas by anchoring units of study in…

  9. Investigation of Cooling Water Injection into Supersonic Rocket Engine Exhaust

    Science.gov (United States)

    Jones, Hansen; Jeansonne, Christopher; Menon, Shyam

    2017-11-01

    Water spray cooling of the exhaust plume from a rocket undergoing static testing is critical in preventing thermal wear of the test stand structure, and suppressing the acoustic noise signature. A scaled test facility has been developed that utilizes non-intrusive diagnostic techniques including Focusing Color Schlieren (FCS) and Phase Doppler Particle Anemometry (PDPA) to examine the interaction of a pressure-fed water jet with a supersonic flow of compressed air. FCS is used to visually assess the interaction of the water jet with the strong density gradients in the supersonic air flow. PDPA is used in conjunction to gain statistical information regarding water droplet size and velocity as the jet is broken up. Measurement results, along with numerical simulations and jet penetration models are used to explain the observed phenomena. Following the cold flow testing campaign a scaled hybrid rocket engine will be constructed to continue tests in a combusting flow environment similar to that generated by the rocket engines tested at NASA facilities. LaSPACE.

  10. Using PDV to Understand Damage in Rocket Motor Propellants

    Science.gov (United States)

    Tear, Gareth; Chapman, David; Ottley, Phillip; Proud, William; Gould, Peter; Cullis, Ian

    2017-06-01

    There is a continuing requirement to design and manufacture insensitive munition (IM) rocket motors for in-service use under a wide range of conditions, particularly due to shock initiation and detonation of damaged propellant spalled across the central bore of the rocket motor (XDT). High speed photography has been crucial in determining this behaviour, however attempts to model the dynamic behaviour are limited by the lack of precision particle and wave velocity data with which to validate against. In this work Photonic Doppler Velocimetery (PDV) has been combined with high speed video to give accurate point velocity and timing measurements of the rear surface of a propellant block impacted by a fragment travelling upto 1.4 km s-1. By combining traditional high speed video with PDV through a dichroic mirror, the point of velocity measurement within the debris cloud has been determined. This demonstrates a new capability to characterise the damage behaviour of a double base rocket motor propellant and hence validate the damage and fragmentation algorithms used in the numerical simulations.

  11. Ultra-fast Escape of a Octopus-inspired Rocket

    Science.gov (United States)

    Weymouth, Gabriel; Triantafyllou, Michael

    2013-11-01

    The octopus, squid, and other cephalopods inflate with water and then release a jet to accelerate in the opposite direction. This escape mechanism is particularly interesting in the octopus because they become initially quite bluff, yet this does not hinder them in achieving impressive bursts of speed. We examine this somewhat paradoxical maneuver using a simple deflating spheroid model in both potential and viscous flow. We demonstrate that the dynamic reduction of the width of the body completely changes the flow and forces acting on the escaping rocket in three ways. First, a body which reduces in size can generate an added mass thrust which counteracts the added mass inertia. Second, the motion of the shrinking wall acts similar to suction on a static wall, reducing separation and drag forces in a viscous fluid, but that this effects depends on the rate of size change. Third, using a combination of these two features it is possible to initially load the fluid with kinetic energy when heavy and bluff and then recover that energy when streamlined and light, enabling ultra-fast accelerations. As a notable example, these mechanisms allow a shrinking spheroid rocket in a heavy inviscid fluid to achieve speeds greater than an identical rocket in the vacuum of space. Southampton Marine and Maritime Institute.

  12. Preparing nurses to intervene in the tobacco epidemic: Developing a model for faculty development and curriculum redesign.

    Science.gov (United States)

    Petersen, Anne Berit; Meyer, Bonnie; Sachs, Bonnie L; Bialous, Stella A; Cataldo, Janine K

    2017-07-01

    As the largest group of health professionals, nurses have a tremendous potential to help curb the tobacco epidemic. However, studies conducted across a range of global settings continue to indicate that both practicing nurses and nursing student have limited knowledge, skills and confidence needed to implement evidence-based tobacco cessation interventions. A contributing factor is the limited inclusion of tobacco control content in nursing curricula. Additionally, there is limited understanding of nurse educators' knowledge and perceptions about teaching tobacco dependence content. This paper presents the Loma Linda University School of Nursing's concurrent experience with both faculty development and curriculum redesign in the area of tobacco dependence prevention and treatment. An internal survey was administered at baseline and at 2-year follow-up to assess faculty's knowledge, perceptions and practices related to teaching tobacco dependence content and skills (n = 42). Faculty and curriculum development strategies and resources utilized, evaluation findings and subsequent lessons learned are described. The findings have implications for nursing programs seeking to enhance their curricula and commitment to ensuring that their graduates are prepared to provide evidence-based tobacco cessation interventions with each patient they encounter. Copyright © 2017 Elsevier Ltd. All rights reserved.

  13. Liquid rocket combustion chamber acoustic characterization

    Directory of Open Access Journals (Sweden)

    Cândido Magno de Souza

    2010-09-01

    Full Text Available Over the last 40 years, many solid and liquid rocket motors have experienced combustion instabilities. Among other causes, there is the interaction of acoustic modes with the combustion and/or fluid dynamic processes inside the combustion chamber. Studies have been showing that, even if less than 1% of the available energy is diverted to an acoustic mode, combustion instability can be generated. On one hand, this instability can lead to ballistic pressure changes, couple with other propulsion systems such as guidance or thrust vector control, and in the worst case, cause motor structural failure. In this case, measures, applying acoustic techniques, must be taken to correct/minimize these influences on the combustion. The combustion chamber acoustic behavior in operating conditions can be estimated by considering its behavior in room conditions. In this way, acoustic tests can be easily performed, thus identifying the cavity modes. This paper describes the procedures to characterize the acoustic behavior in the inner cavity of four different configurations of a combustion chamber. Simple analytical models are used to calculate the acoustic resonance frequencies and these results are compared with acoustic natural frequencies measured at room conditions. Some comments about the measurement procedures are done, as well as the next steps for the continuity of this research. The analytical and experimental procedures results showed good agreement. However, limitations on high frequency band as well as in the identification of specific kinds of modes indicate that numerical methods able to model the real cavity geometry and an acoustic experimental modal analysis may be necessary for a more complete analysis. Future works shall also consider the presence of passive acoustic devices such as baffles and resonators capable of introducing damping and avoiding or limiting acoustic instabilities.

  14. Laser-fusion rocket for interplanetary propulsion

    International Nuclear Information System (INIS)

    Hyde, R.A.

    1983-01-01

    A rocket powered by fusion microexplosions is well suited for quick interplanetary travel. Fusion pellets are sequentially injected into a magnetic thrust chamber. There, focused energy from a fusion Driver is used to implode and ignite them. Upon exploding, the plasma debris expands into the surrounding magnetic field and is redirected by it, producing thrust. This paper discusses the desired features and operation of the fusion pellet, its Driver, and magnetic thrust chamber. A rocket design is presented which uses slightly tritium-enriched deuterium as the fusion fuel, a high temperature KrF laser as the Driver, and a thrust chamber consisting of a single superconducting current loop protected from the pellet by a radiation shield. This rocket can be operated with a power-to-mass ratio of 110 W gm -1 , which permits missions ranging from occasional 9 day VIP service to Mars, to routine 1 year, 1500 ton, Plutonian cargo runs

  15. Metallic Hydrogen: A Game Changing Rocket Propellant

    Science.gov (United States)

    Silvera, Isaac F.

    2016-01-01

    The objective of this research is to produce metallic hydrogen in the laboratory using an innovative approach, and to study its metastability properties. Current theoretical and experimental considerations expect that extremely high pressures of order 4-6 megabar are required to transform molecular hydrogen to the metallic phase. When metallic hydrogen is produced in the laboratory it will be extremely important to determine if it is metastable at modest temperatures, i.e. remains metallic when the pressure is released. Then it could be used as the most powerful chemical rocket fuel that exists and revolutionize rocketry, allowing single-stage rockets to enter orbit and chemically fueled rockets to explore our solar system.

  16. Development of boron epoxy rocket motor chambers.

    Science.gov (United States)

    Jensen, W. M.; Knoell, A. C.; Zweben, C.

    1972-01-01

    A 71 cm diameter 74 cm length boron/epoxy composite rocket motor chamber was designed based on the geometric configuration of the JPL Applications Technology Satellite titanium alloy apogee motor chamber. Because analyses showed large stress concentrations in the domes, the configuration was modified using the same basic constraints for openings and attachments. The rocket motor chamber was then fabricated by filament winding with boron/epoxy tape and hydrostatically tested to failure at 264 N/sq cm, 57.2 N/sq cm above the design value. Two more rocket motor chambers were fabricated with the same basic constraints, but shortened to 57.6 cm for a smaller propellant load. The first of these short chambers failed in proof because of filament winding fabrication difficulties. The second chamber was successfully fabricated and passed the hydrostatic proof test.

  17. Additive Manufacturing for Affordable Rocket Engines

    Science.gov (United States)

    West, Brian; Robertson, Elizabeth; Osborne, Robin; Calvert, Marty

    2016-01-01

    Additive manufacturing (also known as 3D printing) technology has the potential to drastically reduce costs and lead times associated with the development of complex liquid rocket engine systems. NASA is using 3D printing to manufacture rocket engine components including augmented spark igniters, injectors, turbopumps, and valves. NASA is advancing the process to certify these components for flight. Success Story: MSFC has been developing rocket 3D-printing technology using the Selective Laser Melting (SLM) process. Over the last several years, NASA has built and tested several injectors and combustion chambers. Recently, MSFC has 3D printed an augmented spark igniter for potential use the RS-25 engines that will be used on the Space Launch System. The new design is expected to reduce the cost of the igniter by a factor of four. MSFC has also 3D printed and tested a liquid hydrogen turbopump for potential use on an Upper Stage Engine. Additive manufacturing of the turbopump resulted in a 45% part count reduction. To understanding how the 3D printed parts perform and to certify them for flight, MSFC built a breadboard liquid rocket engine using additive manufactured components including injectors, turbomachinery, and valves. The liquid rocket engine was tested seven times in 2016 using liquid oxygen and liquid hydrogen. In addition to exposing the hardware to harsh environments, engineers learned to design for the new manufacturing technique, taking advantage of its capabilities and gaining awareness of its limitations. Benefit: The 3D-printing technology promises reduced cost and schedule for rocket engines. Cost is a function of complexity, and the most complicated features provide the largest opportunities for cost reductions. This is especially true where brazes or welds can be eliminated. The drastic reduction in part count achievable with 3D printing creates a waterfall effect that reduces the number of processes and drawings, decreases the amount of touch

  18. The Strutjet Rocket Based Combined Cycle Engine

    Science.gov (United States)

    Siebenhaar, A.; Bulman, M. J.; Bonnar, D. K.

    1998-01-01

    The multi stage chemical rocket has been established over many years as the propulsion System for space transportation vehicles, while, at the same time, there is increasing concern about its continued affordability and rather involved reusability. Two broad approaches to addressing this overall launch cost problem consist in one, the further development of the rocket motor, and two, the use of airbreathing propulsion to the maximum extent possible as a complement to the limited use of a conventional rocket. In both cases, a single-stage-to-orbit (SSTO) vehicle is considered a desirable goal. However, neither the "all-rocket" nor the "all-airbreathing" approach seems realizable and workable in practice without appreciable advances in materials and manufacturing. An affordable system must be reusable with minimal refurbishing on-ground, and large mean time between overhauls, and thus with high margins in design. It has been suggested that one may use different engine cycles, some rocket and others airbreathing, in a combination over a flight trajectory, but this approach does not lead to a converged solution with thrust-to-mass, specific impulse, and other performance and operational characteristics that can be obtained in the different engines. The reason is this type of engine is simply a combination of different engines with no commonality of gas flowpath or components, and therefore tends to have the deficiencies of each of the combined engines. A further development in this approach is a truly combined cycle that incorporates a series of cycles for different modes of propulsion along a flight path with multiple use of a set of components and an essentially single gas flowpath through the engine. This integrated approach is based on realizing the benefits of both a rocket engine and airbreathing engine in various combinations by a systematic functional integration of components in an engine class usually referred to as a rocket-based combined cycle (RBCC) engine

  19. The Guggenheim Aeronautics Laboratory at Caltech and the creation of the modern rocket motor (1936-1946): How the dynamics of rocket theory became reality

    Science.gov (United States)

    Zibit, Benjamin Seth

    creation of the jet Propulsion Laboratory, the founding of the Aerojet Corporation, and emphasizes the issue of JPL's close relation to military development of the rocket becomes a core subject of this thesis. Cooperation between engineers in an academic setting and the military was not merely inevitable in the 1940s---it was actively fostered and proved quite profitable to all concerned. The deep relationship between the Guggenheim Aeronautics Laboratory and the Army Air Force was one model of the evolution of a permanent institutional edifice, weaving academic research and military end-use together. The dissertation concludes that what began as a modest effort to understand rocket theory in greater depth led within ten years to both research and development tracks which have profoundly altered the technological and military definition of modern history.

  20. Hydrocarbon Rocket Engine Plume Imaging with Laser Induced Incandescence Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA/ Marshall Space Flight Center (MSFC) needs sensors that can be operated on rocket engine plume environments to improve NASA/SSC rocket engine performance. In...

  1. Cusp Alfven and Plasma Electrodynamics Rocket (CAPER) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Launch a single rocket from Andoya Rocket Range into an active cusp event. Observe electric and magnetic fields, HF waves, electron and ion distributions and...

  2. Scientific Skills and Processes in Curriculum Resources

    Science.gov (United States)

    Kremer, Joe

    2017-11-01

    Increasingly, the science education community has recognized the need for curriculum resources that support student development of authentic scientific practices, rather than focusing exclusively on content knowledge. This paper proposes a tool for teachers and researchers to assess the degree to which certain curriculum resources and lessons achieve this goal. After describing a method for reflecting on and categorizing curriculum resources, I apply the method to highlight differences across three teaching methods: Modeling Instruction, Physics Union Mathematics, and a traditional, lecture-based approach.

  3. Propellant-Flow-Actuated Rocket Engine Igniter

    Science.gov (United States)

    Wollen, Mark

    2013-01-01

    A rocket engine igniter has been created that uses a pneumatically driven hammer that, by specialized geometry, is induced into an oscillatory state that can be used to either repeatedly impact a piezoelectric crystal with sufficient force to generate a spark capable of initiating combustion, or can be used with any other system capable of generating a spark from direct oscillatory motion. This innovation uses the energy of flowing gaseous propellant, which by means of pressure differentials and kinetic motion, causes a hammer object to oscillate. The concept works by mass flows being induced through orifices on both sides of a cylindrical tube with one or more vent paths. As the mass flow enters the chamber, the pressure differential is caused because the hammer object is supplied with flow on one side and the other side is opened with access to the vent path. The object then crosses the vent opening and begins to slow because the pressure differential across the ball reverses due to the geometry in the tube. Eventually, the object stops because of the increasing pressure differential on the object until all of the kinetic energy has been transferred to the gas via compression. This is the point where the object reverses direction because of the pressure differential. This behavior excites a piezoelectric crystal via direct impact from the hammer object. The hammer strikes a piezoelectric crystal, then reverses direction, and the resultant high voltage created from the crystal is transferred via an electrode to a spark gap in the ignition zone, thereby providing a spark to ignite the engine. Magnets, or other retention methods, might be employed to favorably position the hammer object prior to start, but are not necessary to maintain the oscillatory behavior. Various manifestations of the igniter have been developed and tested to improve device efficiency, and some improved designs are capable of operation at gas flow rates of a fraction of a gram per second (0

  4. Star-grain rocket motor - nonsteady internal ballistics

    Energy Technology Data Exchange (ETDEWEB)

    Loncaric, S.; Greatrix, D.R.; Fawaz, Z. [Ryerson University, Dept. of Aerospace Engineering, Toronto (Canada)

    2004-01-01

    The nonsteady internal ballistics of a star-grain solid-propellant rocket motor are investigated through a numerical simulation model that incorporates both the internal flow and surrounding structure. The effects of structural vibration on burning rate augmentation and wave development in nonsteady operation are demonstrated. The amount of damping plays a role in influencing the predicted axial combustion instability symptoms of the motor. The variation in oscillation frequencies about a given star grain section periphery, and along the grain with different levels of burn-back, also influences the means by which the local acceleration drives the combustion and flow behaviour. (authors)

  5. An Analysis of Rocket Propulsion Testing Costs

    Science.gov (United States)

    Ramirez, Carmen; Rahman, Shamim

    2010-01-01

    The primary mission at NASA Stennis Space Center (SSC) is rocket propulsion testing. Such testing is commonly characterized as one of two types: production testing for certification and acceptance of engine hardware, and developmental testing for prototype evaluation or research and development (R&D) purposes. For programmatic reasons there is a continuing need to assess and evaluate the test costs for the various types of test campaigns that involve liquid rocket propellant test articles. Presently, in fact, there is a critical need to provide guidance on what represents a best value for testing and provide some key economic insights for decision-makers within NASA and the test customers outside the Agency. Hence, selected rocket propulsion test databases and references have been evaluated and analyzed with the intent to discover correlations of technical information and test costs that could help produce more reliable and accurate cost projections in the future. The process of searching, collecting, and validating propulsion test cost information presented some unique obstacles which then led to a set of recommendations for improvement in order to facilitate future cost information gathering and analysis. In summary, this historical account and evaluation of rocket propulsion test cost information will enhance understanding of the various kinds of project cost information; identify certain trends of interest to the aerospace testing community.

  6. Program For Optimization Of Nuclear Rocket Engines

    Science.gov (United States)

    Plebuch, R. K.; Mcdougall, J. K.; Ridolphi, F.; Walton, James T.

    1994-01-01

    NOP is versatile digital-computer program devoloped for parametric analysis of beryllium-reflected, graphite-moderated nuclear rocket engines. Facilitates analysis of performance of engine with respect to such considerations as specific impulse, engine power, type of engine cycle, and engine-design constraints arising from complications of fuel loading and internal gradients of temperature. Predicts minimum weight for specified performance.

  7. Moving Material into Space Without Rockets.

    Science.gov (United States)

    Cheng, R. S.; Trefil, J. S.

    1985-01-01

    In response to conventional rocket demands on fuel supplies, electromagnetic launches were developed to give payloads high velocity using a stationary energy source. Several orbital mechanics problems are solved including a simple problem (radial launch with no rotation) and a complex problem involving air resistance and gravity. (DH)

  8. Rockets: Physical Science Teacher's Guide with Activities.

    Science.gov (United States)

    Vogt, Gregory L.; Rosenberg, Carla R., Ed.

    Rockets have evolved from simple tubes filled with black powder into mighty vehicles capable of launching a spacecraft out into the galaxy. The guide begins with background information sections on the history of rocketry, scientific principles, and practical rocketry. The sections on scientific principles and practical rocketry are based on Isaac…

  9. Government Relations: It's Not Rocket Science

    Science.gov (United States)

    Radway, Mike

    2007-01-01

    Many people in the early childhood education field are afraid of government relations work, intimidated by politicians, and believe the whole process is unseemly. The author asserts that they should not be afraid nor be intimidated because government relations is not rocket science and fundamentally officeholders are no different from the rest of…

  10. Consort and Joust sounding rockets for microgravity research

    Science.gov (United States)

    Wessling, F. C.; Maybee, G. W.

    1992-08-01

    Descriptions are given of the hardware and techniques used for five launches of the Consort and Joust sounding rockets with payloads for short periods of microgravity payload research. The Consort rockets can provide about seven minutes of microgravity conditions for about 300 kg of payload, and the Joust rocket can yield over 14 minutes for 240 kg. These rockets provide effective means for experiments involving foam formation, bioprocessing, polymer processing, and accelerometers.

  11. US Rocket Propulsion Industrial Base Health Metrics

    Science.gov (United States)

    Doreswamy, Rajiv

    2013-01-01

    The number of active liquid rocket engine and solid rocket motor development programs has severely declined since the "space race" of the 1950s and 1960s center dot This downward trend has been exacerbated by the retirement of the Space Shuttle, transition from the Constellation Program to the Space launch System (SLS) and similar activity in DoD programs center dot In addition with consolidation in the industry, the rocket propulsion industrial base is under stress. To Improve the "health" of the RPIB, we need to understand - The current condition of the RPIB - How this compares to past history - The trend of RPIB health center dot This drives the need for a concise set of "metrics" - Analogous to the basic data a physician uses to determine the state of health of his patients - Easy to measure and collect - The trend is often more useful than the actual data point - Can be used to focus on problem areas and develop preventative measures The nation's capability to conceive, design, develop, manufacture, test, and support missions using liquid rocket engines and solid rocket motors that are critical to its national security, economic health and growth, and future scientific needs. center dot The RPIB encompasses US government, academic, and commercial (including industry primes and their supplier base) research, development, test, evaluation, and manufacturing capabilities and facilities. center dot The RPIB includes the skilled workforce, related intellectual property, engineering and support services, and supply chain operations and management. This definition touches the five main segments of the U.S. RPIB as categorized by the USG: defense, intelligence community, civil government, academia, and commercial sector. The nation's capability to conceive, design, develop, manufacture, test, and support missions using liquid rocket engines and solid rocket motors that are critical to its national security, economic health and growth, and future scientific needs

  12. The Use of Molecular Modeling and VSEPR Theory in the Undergraduate Curriculum to Predict the Three-Dimensional Structure of Molecules

    Science.gov (United States)

    Pfennig, Brian W.; Frock, Richard L.

    1999-07-01

    This paper illustrates how valence shell electron pair repulsion (VSEPR) theory and molecular modeling can be used in a complimentary fashion in the undergraduate curriculum to predict the three-dimensional structure of molecules. Students use the familiar VSEPR model to sketch the three-dimensional structures of molecules predicted by a comparison of the relative magnitudes of electrostatic repulsion between electron pair domains on the central atom. Despite the simplicity and elegance of the VSEPR model, however, students often have difficulty visualizing the three-dimensional shapes of molecules and learning the more subtle features of the model, such as the bond length and bond angle deviations from ideal geometry that accompany the presence of lone pair or multiple bond domains or that result from differences in the electronegativity of the bonded atoms, partial charges and molecular dipole moments, and site preferences in the trigonal bipyramidal electron geometry. Students therefore also employ a molecular modeling approach to predict the three-dimensional shapes of molecules by performing both molecular mechanics and semiempirical quantum mechanical calculations to minimize the structures of these molecules. A major strength of the molecular modeling approach is that it allows students to quantitatively explore the more subtle implications of VSEPR theory using an alternative model. Student responses on end-of-the-semester evaluations ranked this exercise highly among the seven projects performed during the semester, commenting specifically on how the software allowed them to visualize the three-dimensional aspects of molecules more effectively than simple ball-and-stick models and on how the molecular modeling helped them to explore the more detailed structural features predicted by VSEPR theory.

  13. Rocketing into the future the history and technology of rocket planes

    CERN Document Server

    van Pelt, Michel

    2012-01-01

    Rocketing into the Future journeys into the exciting world of rocket planes, examining the exotic concepts and actual flying vehicles that have been devised over the last one hundred years. Lavishly illustrated with over 150 photographs, it recounts the history of rocket planes from the early pioneers who attached simple rockets on to their wooden glider airplanes to the modern world of high-tech research vehicles. The book then looks at the possibilities for the future. The technological and economic challenges of the Space Shuttle proved insurmountable, and thus the program was unable to fulfill its promise of low-cost access to space. However, the burgeoning market of suborbital space tourism may yet give the necessary boost to the development of a truly reusable spaceplane.

  14. Integration of Basic-Clinical Sciences, PBL, CBL, and IPE in U.S. Dental Schools' Curricula and a Proposed Integrated Curriculum Model for the Future.

    Science.gov (United States)

    Elangovan, Satheesh; Venugopalan, Shankar Rengasamy; Srinivasan, Sreedevi; Karimbux, Nadeem Y; Weistroffer, Paula; Allareddy, Veerasathpurush

    2016-03-01

    The integration of basic and clinical sciences in dental curricula enhances the application of basic science principles to clinical decision making and improves students' critical thinking. The aim of this study was to define the characteristics of U.S. dental schools' curricula with regard to level of course integration and degree of incorporation of problem-based and case-based learning. A second aim was to propose a dental curriculum that supports effective integration of courses and addresses some of the concerns facing academic dentistry. A survey was sent to 58 academic deans in U.S. dental schools. The survey included questions about integrating courses in the schools' curricula and major changes in curricular structure or teaching pedagogy that respondents anticipated in the immediate future. A total of 31 schools responded to the survey, for a 53.4% response rate. The results showed that three-quarters of the responding schools still teach basic and clinical sciences separately, although 61.3% reported having an integrated curriculum. Among the responding schools, 16 had a PBL component integrated into their curricula (two had integrated PBL in all courses and 14 used a hybrid PBL approach). Two schools had CBL integrated in all courses, and ten had CBL integrated in >75% of courses. Only slightly more than half agreed that their curricula foster students' thinking "outside the box." Faculty shortages and lack of protected time and resources were the most frequent reasons given for a lack of integrated courses. The integrated model proposed in this article has the potential to provide a low stress environment for students and to address important issues like faculty shortages.

  15. Peregrine 100-km Sounding Rocket Project

    Science.gov (United States)

    Zilliac, Gregory

    2012-01-01

    The Peregrine Sounding Rocket Program is a joint basic research program of NASA Ames Research Center, NASA Wallops, Stanford University, and the Space Propulsion Group, Inc. (SPG). The goal is to determine the applicability of this technology to a small launch system. The approach is to design, build, and fly a stable, efficient liquefying fuel hybrid rocket vehicle to an altitude of 100 km. The program was kicked off in October of 2006 and has seen considerable progress in the subsequent 18 months. This research group began studying liquifying hybrid rocket fuel technology more than a decade ago. The overall goal of the research was to gain a better understanding of the fundamental physics of the liquid layer entrainment process responsible for the large increase in regression rate observed in these fuels, and to demonstrate the effect of increased regression rate on hybrid rocket motor performance. At the time of this reporting, more than 400 motor tests were conducted with a variety of oxidizers (N2O, GOx, LOx) at ever increasing scales with thrust levels from 5 to over 15,000 pounds (22 N to over 66 kN) in order to move this technology from the laboratory to practical applications. The Peregrine program is the natural next step in this development. A number of small sounding rockets with diameters of 3, 4, and 6 in. (7.6, 10.2, and 15.2 cm) have been flown, but Peregrine at a diameter of 15 in. (38.1 cm) and 14,000-lb (62.3-kN) thrust is by far the largest system ever attempted and will be one of the largest hybrids ever flown. Successful Peregrine flights will set the stage for a wide range of applications of this technology.

  16. 77 FR 67269 - Voluntary Licensing of Amateur Rocket Operations; Withdrawal

    Science.gov (United States)

    2012-11-09

    ... Federal Aviation Administration 14 CFR Part 400 RIN 2120-AK16 Voluntary Licensing of Amateur Rocket... launch operators that conduct certain amateur rocket launches to voluntarily apply for a commercial space... ``indemnification.'' Others expressed doubts about whether amateur rockets could ever meet chapter III requirements...

  17. The Alabama Space and Rocket Center: The Second Decade.

    Science.gov (United States)

    Buckbee, Edward O.

    1983-01-01

    The Alabama Space and Rocket Center in Huntsville, the world's largest rocket and space museum, includes displays illustrating American rocket history, exhibits and demonstrations on rocketry principles and experiences, and simulations of space travel. A new project includes an integrated recreational-educational complex, described in the three…

  18. 14 CFR 437.67 - Tracking a reusable suborbital rocket.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Tracking a reusable suborbital rocket. 437... a reusable suborbital rocket. A permittee must— (a) During permitted flight, measure in real time the position and velocity of its reusable suborbital rocket; and (b) Provide position and velocity...

  19. Development of Kabila rocket: A radioisotope heated thermionic plasma rocket engine

    Directory of Open Access Journals (Sweden)

    Kalomba Mboyi

    2015-04-01

    Full Text Available A new type of plasma rocket engine, the Kabila rocket, using a radioisotope heated thermionic heating chamber instead of a conventional combustion chamber or catalyst bed is introduced and it achieves specific impulses similar to the ones of conventional solid and bipropellant rockets. Curium-244 is chosen as a radioisotope heat source and a thermal reductive layer is also used to obtain precise thermionic emissions. The self-sufficiency principle is applied by simultaneously heating up the emitting material with the radioisotope decay heat and by powering the different valves of the plasma rocket engine with the same radioisotope decay heat using a radioisotope thermoelectric generator. This rocket engine is then benchmarked against a 1 N hydrazine thruster configuration operated on one of the Pleiades-HR-1 constellation spacecraft. A maximal specific impulse and power saving of respectively 529 s and 32% are achieved with helium as propellant. Its advantages are its power saving capability, high specific impulses and simultaneous ease of storage and restart. It can however be extremely voluminous and potentially hazardous. The Kabila rocket is found to bring great benefits to the existing spacecraft and further research should optimize its geometric characteristics and investigate the physical principals of its operation.

  20. Research on Ground Motion Metal Target Based on Rocket Projectile by Using Millimeter Wave Radiometer Technology

    Directory of Open Access Journals (Sweden)

    Zhang Dongyang

    2014-06-01

    Full Text Available How to detect the ground motion metal target effectively is an important guarantee for precision strike in the process of Rocket Projectile flight. Accordingly and in view of the millimeter- wave radiation characteristic of the ground motion metal target, a mathematical model was established based on Rocket Projectile about millimeter-wave detection to the ground motion metal target. Through changing various parameters in the process of Rocket Projectile flight, the detection model was studied by simulation. The parameters variation and effective range of millimeter wave radiometer were obtained in the process of rotation and horizontal flight. So a certain theoretical basis was formed for the precision strike to the ground motion metal target.

  1. Pre-Eminent Curriculum in Islamic Basic School Integrated Comparative Studies in Islamic Basic School Integrated Al-Izzah Serang and Al-Hanif Cilegon, Banten, Indonesia

    Science.gov (United States)

    Fauz, Anis; Hasbullah

    2016-01-01

    Compare to General SD (Primary school), the superiority of SD Islam Terpadu (Integrated Islamic Primary School) lies on the development of the curriculum and learning that is more emphasize on integrated curriculum and integrated learning. Curriculum model applied in Sekolah Dasar Islam Terpadu (SDIT) is integrated curriculum. This curriculum is…

  2. On use of hybrid rocket propulsion for suborbital vehicles

    Science.gov (United States)

    Okninski, Adam

    2018-04-01

    While the majority of operating suborbital rockets use solid rocket propulsion, recent advancements in the field of hybrid rocket motors lead to renewed interest in their use in sounding rockets. This paper presents results of optimisation of sounding rockets using hybrid propulsion. An overview of vehicles under development during the last decade, as well as heritage systems is provided. Different propellant combinations are discussed and their performance assessment is given. While Liquid Oxygen, Nitrous Oxide and Nitric Acid have been widely tested with various solid fuels in flight, Hydrogen Peroxide remains an oxidiser with very limited sounding rocket applications. The benefits of hybrid propulsion for sounding rockets are given. In case of hybrid rocket motors the thrust curve can be optimised for each flight, using a flow regulator, depending on the payload and mission. Results of studies concerning the optimal burn duration and nozzle selection are given. Specific considerations are provided for the Polish ILR-33 "Amber" sounding rocket. Low regression rates, which up to date were viewed as a drawback of hybrid propulsion may be used to the benefit of maximising rocket performance if small solid rocket boosters are used during the initial flight period. While increased interest in hybrid propulsion is present, no up-to-date reference concerning use of hybrid rocket propulsion for sounding rockets is available. The ultimate goal of the paper is to provide insight into the sensitivity of different design parameters on performance of hybrid sounding rockets and delve into the potential and challenges of using hybrid rocket technology for expendable suborbital applications.

  3. Development and Performance of the 10 kN Hybrid Rocket Motor for the Stratos II Sounding Rocket

    NARCIS (Netherlands)

    Werner, R.M.; Knop, T.R.; Wink, J; Ehlen, J; Huijsman, R; Powell, S; Florea, R.; Wieling, W; Cervone, A.; Zandbergen, B.T.C.

    2016-01-01

    This paper presents the development work of the 10 kN hybrid rocket motor DHX-200 Aurora. The DHX-200 Aurora was developed by Delft Aerospace Rocket Engineering (DARE) to power the Stratos II and Stratos II+ sounding rocket, with the later one being launched in October 2015. Stratos II and Stratos

  4. Closure Letter Report for Corrective Action Unit 496: Buried Rocket Site - Antelope Lake (TTR)

    International Nuclear Information System (INIS)

    NSTec Environmental Restoration

    2007-01-01

    former TTR range manager recalled a lost rocket that possibly contained a depleted uranium ballast in an inert warhead. The interviewee confirmed that the last tracking coordinate for the rocket indicated it was lost in an area south of Area 9 near the l T R range coordinates X = 6,614.57 feet (ft) and Y = -20,508.79 ft. These coordinates correspond to a location approximately 2,295 ft northeast of the Mid Target, on Mid Lake. CAS TA-55-008-TAAL was removed from CAU 496 before the SAFER investigation could be completed, and before the new information could be evaluated and the conceptual site model assumptions confirmed

  5. Closure Letter Report for Corrective Action Unit 496: Buried Rocket Site - Antelope Lake

    Energy Technology Data Exchange (ETDEWEB)

    NSTec Environmental Restoration

    2007-05-01

    interviews. Most pertinently, an interview in 2005 with a former TTR range manager recalled a lost rocket that possibly contained a depleted uranium ballast in an inert warhead. The interviewee confirmed that the last tracking coordinate for the rocket indicated it was lost in an area south of Area 9 near the l T R range coordinates X = 6,614.57 feet (ft) and Y = -20,508.79 ft. These coordinates correspond to a location approximately 2,295 ft northeast of the Mid Target, on Mid Lake. CAS TA-55-008-TAAL was removed from CAU 496 before the SAFER investigation could be completed, and before the new information could be evaluated and the conceptual site model assumptions confirmed.

  6. Teaching evidence-based practice: developing a curriculum model to foster evidence-based practice in undergraduate student nurses.

    Science.gov (United States)

    Finotto, Stefano; Carpanoni, Marika; Turroni, Elena Casadei; Camellini, Riccarda; Mecugni, Daniela

    2013-09-01

    For the nature of the Evidence-Based Practice (EBP) and its relevance to nursing, the skills that it requires should be a component in the basic Nursing degree courses. For this reason, the EBP process should be introduced early on in nursing education to develop students' independence and ability to self-learning. the aim of this study is to describe the perception that newly graduated nurses have relative to the benefits of the skills learned during the laboratory's three-year EBP in consideration of the construction of the thesis, the research of evidence and usefulness of the EBP process for the development of their professional career. A descriptive study with a sample of 300 newly graduated nurses from the Degree Course in Nursing of the University of Modena and Reggio Emilia, venue of Reggio Emilia. The data collection instrument was an anonymous questionnaire. It was possible to answer through a 10 Likert scale. The sample considers effective the research of evidence carried out (mean 6, SD 2), related to the problems of patients (mean 7, SD 2); the sample considered the skills acquired during the laboratory's three-year EBP to be useful for career development (mean 7, SD 2). the decision to include the laboratory's three-year EBP in the curriculum of the Nursing degree promotes the development of skills relating to the use of the EBP process, competence that in the literature is indicated as one of the core competencies that all health professionals should develop and maintain throughout their professional career. Copyright © 2013 Elsevier Ltd. All rights reserved.

  7. FLC expression is down-regulated by cold treatment in Diplotaxis tenuifolia (wild rocket), but flowering time is unaffected.

    Science.gov (United States)

    Taylor, Jemma L; Massiah, Andrea; Kennedy, Sue; Hong, Yiguo; Jackson, Stephen D

    2017-07-01

    Wild rocket (Diplotaxis tenuifolia) has become a very popular salad leaf due to its peppery taste. It is part of the Brassicaceae family and thus has a high level of homology at the DNA level to other Brassica species including Arabidopsis thaliana. The vernalization and photoperiodic requirements of wild rocket have not been reported to date. Photoperiodic experiments described here demonstrate that rocket is a facultative long day plant. To investigate the vernalization requirement, both seed and young plants were given vernalization treatments at 4°C for different lengths of time. A rocket homologue of FLOWERING LOCUS C (DtFLC) was isolated and shown to functionally complement the Arabidopsis FRI + flc3 null mutant. Whilst the expression of DtFLC was significantly reduced after just one week of cold treatment, cold treatments of two to eight weeks had no significant effect on bolting time of wild rocket indicating that rocket does not have a vernalization requirement. These findings illustrate that important fundamental differences can exist between model and crop plant species, such as in this case where down-regulation of DtFLC expression does not enable earlier flowering in wild rocket as it does in Arabidopsis and many other Brassica species. Copyright © 2017 Elsevier GmbH. All rights reserved.

  8. Glycemic control of diabetes patients under continuous rocket attacks.

    Science.gov (United States)

    Soskolne, Varda; Dekel, Rachel; Vinker, Shlomo

    2016-01-01

    Evidence regarding the detrimental effects of exposure to stress on glycemic control among diabetes patients has mainly focused on personal life events or acute trauma. However, the effects of continuous exposure to extreme stress on type 2 diabetes patients have rarely been studied. The aim of the current study was to examine the association of continuous exposure to rocket attacks with glycemic control and with risk factors for diabetes complications among civilian type 2 diabetes patients. We focus on patients residing in the Western Negev in the south of Israel that has been subjected to rocket attacks fired from Gaza since the end of 2001. A two-arm retrospective cohort study of type 2 diabetes patients, aged 35-70 years, residing in a region with chronic exposure to rocket attacks (N = 1697) and in a non-exposed comparison region in Israel (N = 3000). Data were retrieved from the Health Maintenance Organization (HMO)'s database for four time periods representing exposure: chronic-2008; elevated-2009 (post'Cast Lead' operation); return to chronic-2010, 2011. Data included socio-demographic variables, HbA 1c , BMI, LDL cholesterol, blood pressure. General Linear Models (GLM) were used for analysis. For HbA 1c , the model yielded a significant main effect for time, a borderline significance main effect for region, and a significant time by region interaction: no differences in HbA 1c levels between the regions in 2008 and 2009, followed by significant differences between the regions in 2010 and 2011 when HbA 1c continued to increase in the exposed region but decreased in the comparison region. Regarding risk factors, a significant main effect for time for LDL cholesterol only, and significant main effects for region were found in all factors: BMI and LDL cholesterol were higher in the exposed than in the comparison region, but blood pressure values were lower. Continuous exposure to rocket attacks is associated with glycemic control and risk factors in a

  9. Mi-STAR Unit Challenges serve as a model for integrating earth science and systems thinking in a Next Generation Science Standards (NGSS) aligned curriculum.

    Science.gov (United States)

    Gochis, E. E.; Tubman, S.; Matthys, T.; Bluth, G.; Oppliger, D.; Danhoff, B.; Huntoon, J. E.

    2017-12-01

    Michigan Science Teaching and Assessment Reform (Mi-STAR) is developing an NGSS-aligned middle school curriculum and associated teacher professional learning program in which science is taught and learned as an integrated body of knowledge that can be applied to address societal issues. With the generous support of the Herbert H. and Grace A. Dow Foundation, Mi-STAR has released several pilot-tested units through the Mi-STAR curriculum portal at mi-star.mtu.edu. Each of these units focuses on an ongoing `Unit Challenge' investigation that integrates STEM content across disciplinary boundaries, stimulates interest, and engages students in using scientific practices to address 21st century challenges. Each Mi-STAR unit is connected to a Unifying NGSS Crosscutting Concept (CCC) that allows students to recognize the concepts that are related to the phenomena or problems under investigation. In the 6th grade, students begin with an exploration of the CCC Systems and System Models. Through repeated applications across units, students refine their understanding of what a system is and how to model a complex Earth system. An example 6th grade unit entitled "Water on the Move: The Water Cycle," provides an example of how Mi-STAR approaches the use of Unifying CCCs and Unit Challenges to enhance middle school students' understanding of the interconnections of Earth system processes and human activities. Throughout the unit, students use a series of hands-on explorations and simulations to explore the hydrologic cycle and how human activity can alter Earth systems. Students develop new knowledge through repeated interactions with the Unit Challenge, which requires development of system models and construction of evidence-based arguments related to flooding problems in a local community. Students have the opportunity to make predictions about how proposed land-use management practices (e.g. development of a skate-park, rain garden, soccer field, etc.) can alter the earth

  10. A Critical Humanist Curriculum

    Science.gov (United States)

    Magill, Kevin; Rodriguez, Arturo

    2015-01-01

    This essay is a critical humanist discussion of curriculum; a departure from the technicist view of education [education meant to support a global capitalist economy] and an analysis of curriculum considering critical humanism, political economy and critical race theory among other modes of critical analysis and inquiry. Our discussion supports a…

  11. Cosmetology. Secondary Curriculum Guide.

    Science.gov (United States)

    Moye, Michael D.; And Others

    This curriculum guide is designed to offer guidelines along with supporting resources and teaching ideas from which the local secondary instructor can extract a cosmetology curriculum that meets local needs. Following an outline of the philosophy and goals underlying state and local vocational education programs in Georgia, the purpose and…

  12. Into the Curriculum.

    Science.gov (United States)

    School Library Media Activities Monthly, 1991

    1991-01-01

    Provides fully developed library media activities designed for specific curriculum units. Curriculum areas represented include reading and language arts (proverbs and fables, letters of the alphabet, and biographies); science (the study of Gregor Mendel and genetics, oil resources); and social studies (global awareness). (LRW)

  13. Marketing Education Curriculum Guide.

    Science.gov (United States)

    Michigan State Univ., East Lansing. Coll. of Agriculture and Natural Resources Education Inst.

    This curriculum guide is intended to provide a common core of competencies from which to design an effective secondary marketing education program. Introductory materials include a definition of marketing education, objectives, outline of instructional content, and questions and answers regarding the curriculum guide. These practical materials are…

  14. Equasions for Curriculum Improvement.

    Science.gov (United States)

    Eckenrod, James S.

    1986-01-01

    Describes the Technology in Curriculum (TIC) program resource guides which will be distributed to California schools in the fall of 1986. These guides match available instructional television programs and computer software to existing California curriculum guides in order to facilitate teachers' classroom use. (JDH)

  15. The Galapagos Jason Curriculum.

    Science.gov (United States)

    National Science Teachers Association, Arlington, VA.

    The JASON Curriculum Project materials are designed to prepare teachers and students for an exploration around the Galapagos Islands via satellite transmission of live images and sound. This curriculum package contains five units, 25 lesson plans, and over 50 activities, along with teacher background material, student worksheets and readings, a…

  16. Development of small solid rocket boosters for the ILR-33 sounding rocket

    Science.gov (United States)

    Nowakowski, Pawel; Okninski, Adam; Pakosz, Michal; Cieslinski, Dawid; Bartkowiak, Bartosz; Wolanski, Piotr

    2017-09-01

    This paper gives an overview of the development of a 6000 Newton-class solid rocket motor for suborbital applications. The design configuration and results of interior ballistics calculations are given. The initial use of the motor as the main propulsion system of the H1 experimental in-flight test platform, within the Polish Small Sounding Rocket Program, is presented. Comparisons of theoretical and experimental performance are shown. Both on-ground and in-flight tests are discussed. A novel composite-case manufacturing technology, which enabled to reach high propellant mass fractions, was validated and significant cost-reductions were achieved. This paper focuses on the process of adapting the design for use as the booster stage of the ILR-33 sounding rocket, under development at the Institute of Aviation in Warsaw, Poland. Parallel use of two of the flight-proven rocket motors along with the main stage is planned. The process of adapting the rocket motor for booster application consists of stage integration, aerothermodynamics and reliability analyses. The separation mechanism and environmental impact are also discussed within this paper. Detailed performance analysis with focus on propellant grain geometry is provided. The evolution of the design since the first flights of the H1 rocket is covered and modifications of the manufacturing process are described. Issues of simultaneous ignition of two motors and their non-identical performance are discussed. Further applications and potential for future development are outlined. The presented results are based on the initial work done by the Rocketry Group of the Warsaw University of Technology Students' Space Association. The continuation of the Polish Small Sounding Rocket Program on a larger scale at the Institute of Aviation proves the value of the outcomes of the initial educational project.

  17. AJ26 rocket engine testing news briefing

    Science.gov (United States)

    2010-01-01

    NASA's John C. Stennis Space Center Director Gene Goldman (center) stands in front of a 'pathfinder' rocket engine with Orbital Sciences Corp. President and Chief Operating Officer J.R. Thompson (left) and Aerojet President Scott Seymour during a Feb. 24 news briefing at the south Mississippi facility. The leaders appeared together to announce a partnership for testing Aerojet AJ26 rocket engines at Stennis. The engines will be used to power Orbital's Taurus II space vehicles to provide commercial cargo transportation missions to the International Space Station for NASA. During the event, the Stennis partnership with Orbital was cited as an example of the new direction of NASA to work with commercial interests for space travel and transport.

  18. Rocket center Peenemünde — Personal memories

    Science.gov (United States)

    Dannenberg, Konrad; Stuhlinger, Ernst

    Von Braun built his first rockets as a young teenager. At 14, he started making plans for rockets for human travel to the Moon and Mars. The German Army began a rocket program in 1929. Two years later, Colonel (later General) Becker contacted von Braun who experimented with rockets in Berlin, gave him a contract in 1932, and, jointly with the Air Force, in 1936 built the rocket center Peenemünde where von Braun and his team developed the A-4 (V-2) rocket under Army auspices, while the Air Force developed the V-1 (buzz bomb), wire-guided bombs, and rocket planes. Albert Speer, impressed by the work of the rocketeers, allowed a modest growth of the Peenemünde project; this brought Dannenberg to the von Braun team in 1940. Hitler did not believe in rockets; he ignored the A-4 project until 1942 when he began to support it, expecting that it could turn the fortunes of war for him. He drastically increased the Peenemünde work force and allowed the transfer of soldiers from the front to Peenemünde; that was when Stuhlinger, in 1943, came to Peenemünde as a Pfc.-Ph.D. Later that year, Himmler wrenched the authority over A-4 production out of the Army's hands, put it under his command, and forced production of the immature rocket at Mittelwerk, and its military deployment against targets in France, Belgium, and England. Throughout the development of the A-4 rocket, von Braun was the undisputed leader of the project. Although still immature by the end of the war, the A-4 had proceeded to a status which made it the first successful long-range precision rocket, the prototype for a large number of military rockets built by numerous nations after the war, and for space rockets that launched satellites and traveled to the Moon and the planets.

  19. Small rocket exhaust plume data

    Science.gov (United States)

    Chirivella, J. E.; Moynihan, P. I.; Simon, W.

    1972-01-01

    During recent cryodeposit tests with an 0.18-N thruster, the mass flux in the plume back field was measured for the first time for nitrogen, carbon dioxide, and a mixture of nitrogen, hydrogen, and ammonia at various inlet pressures. This mixture simulated gases that would be generated by a hydrazine plenum attitude propulsion system. The measurements furnish a base upon which to build a mathematical model of plume back flow that will be used in predicting the mass distribution in the boundary region of other plumes. The results are analyzed and compared with existing analytical predictions.

  20. Evolution of solid rocket booster component testing

    Science.gov (United States)

    Lessey, Joseph A.

    1989-01-01

    The evolution of one of the new generation of test sets developed for the Solid Rocket Booster of the U.S. Space Transportation System. Requirements leading to factory checkout of the test set are explained, including the evolution from manual to semiautomated toward fully automated status. Individual improvements in the built-in test equipment, self-calibration, and software flexibility are addressed, and the insertion of fault detection to improve reliability is discussed.

  1. A Proficiency-Based Progression Training Curriculum Coupled With a Model Simulator Results in the Acquisition of a Superior Arthroscopic Bankart Skill Set.

    Science.gov (United States)

    Angelo, Richard L; Ryu, Richard K N; Pedowitz, Robert A; Beach, William; Burns, Joseph; Dodds, Julie; Field, Larry; Getelman, Mark; Hobgood, Rhett; McIntyre, Louis; Gallagher, Anthony G

    2015-10-01

    To determine the effectiveness of proficiency-based progression (PBP) training using simulation both compared with the same training without proficiency requirements and compared with a traditional resident course for learning to perform an arthroscopic Bankart repair (ABR). In a prospective, randomized, blinded study, 44 postgraduate year 4 or 5 orthopaedic residents from 21 Accreditation Council for Graduate Medical Education-approved US orthopaedic residency programs were randomly assigned to 1 of 3 skills training protocols for learning to perform an ABR: group A, traditional (routine Arthroscopy Association of North America Resident Course) (control, n = 14); group B, simulator (modified curriculum adding a shoulder model simulator) (n = 14); or group C, PBP (PBP plus the simulator) (n = 16). At the completion of training, all subjects performed a 3 suture anchor ABR on a cadaveric shoulder, which was videotaped and scored in blinded fashion with the use of previously validated metrics. The PBP-trained group (group C) made 56% fewer objectively assessed errors than the traditionally trained group (group A) (P = .011) and 41% fewer than group B (P = .049) (both comparisons were statistically significant). The proficiency benchmark was achieved on the final repair by 68.7% of participants in group C compared with 36.7% in group B and 28.6% in group A. When compared with group A, group B participants were 1.4 times, group C participants were 5.5 times, and group C(PBP) participants (who met all intermediate proficiency benchmarks) were 7.5 times as likely to achieve the final proficiency benchmark. A PBP training curriculum and protocol coupled with the use of a shoulder model simulator and previously validated metrics produces a superior arthroscopic Bankart skill set when compared with traditional and simulator-enhanced training methods. Surgical training combining PBP and a simulator is efficient and effective. Patient safety could be improved if

  2. Nuclear Thermal Rocket Element Environmental Simulator (NTREES)

    Science.gov (United States)

    Emrich, William J.

    2008-01-01

    To support a potential future development of a nuclear thermal rocket engine, a state-of-the-art non nuclear experimental test setup has been constructed to evaluate the performance characteristics of candidate fuel element materials and geometries in representative environments. The test device simulates the environmental conditions (minus the radiation) to which nuclear rocket fuel components could be subjected during reactor operation. Test articles mounted in the simulator are inductively heated in such a manner as to accurately reproduce the temperatures and heat fluxes normally expected to occur as a result of nuclear fission while at the same time being exposed to flowing hydrogen. This project is referred to as the Nuclear Thermal Rocket Element Environment Simulator or NTREES. The NTREES device is located at the Marshall Space flight Center in a laboratory which has been modified to accommodate the high powers required to heat the test articles to the required temperatures and to handle the gaseous hydrogen flow required for the tests. Other modifications to the laboratory include the installation of a nitrogen gas supply system and a cooling water supply system. During the design and construction of the facility, every effort was made to comply with all pertinent regulations to provide assurance that the facility could be operated in a safe and efficient manner. The NTREES system can currently supply up to 50 kW of inductive heating to the fuel test articles, although the facility has been sized to eventually allow test article heating levels of up to several megawatts.

  3. Analysis of Acoustic Cavitation Surge in a Rocket Engine Turbopump

    Directory of Open Access Journals (Sweden)

    Hideaki Nanri

    2010-01-01

    Full Text Available In a liquid rocket engine, cavitation in an inducer of a turbopump sometimes causes instability phenomena when the inducer is operated at low inlet pressure. Cavitation surge (auto-oscillation, one such instability phenomenon, has been discussed mainly based on an inertia model assuming incompressible flow. When this model is used, the frequency of the cavitation surge decreases continuously as the inlet pressure of the turbopump decreases. However, we obtained an interesting experimental result in which the frequency of cavitation surge varied discontinuously. Therefore, we employed one-dimensional analysis based on an acoustic model in which the fluid is assumed to be compressible. The analytical result qualitatively corresponded with the experimental result.

  4. Software for Estimating Costs of Testing Rocket Engines

    Science.gov (United States)

    Hines, Merlon M.

    2004-01-01

    A high-level parametric mathematical model for estimating the costs of testing rocket engines and components at Stennis Space Center has been implemented as a Microsoft Excel program that generates multiple spreadsheets. The model and the program are both denoted, simply, the Cost Estimating Model (CEM). The inputs to the CEM are the parameters that describe particular tests, including test types (component or engine test), numbers and duration of tests, thrust levels, and other parameters. The CEM estimates anticipated total project costs for a specific test. Estimates are broken down into testing categories based on a work-breakdown structure and a cost-element structure. A notable historical assumption incorporated into the CEM is that total labor times depend mainly on thrust levels. As a result of a recent modification of the CEM to increase the accuracy of predicted labor times, the dependence of labor time on thrust level is now embodied in third- and fourth-order polynomials.

  5. Reusable rocket engine preventive maintenance scheduling using genetic algorithm

    International Nuclear Information System (INIS)

    Chen, Tao; Li, Jiawen; Jin, Ping; Cai, Guobiao

    2013-01-01

    This paper deals with the preventive maintenance (PM) scheduling problem of reusable rocket engine (RRE), which is different from the ordinary repairable systems, by genetic algorithm. Three types of PM activities for RRE are considered and modeled by introducing the concept of effective age. The impacts of PM on all subsystems' aging processes are evaluated based on improvement factor model. Then the reliability of engine is formulated by considering the accumulated time effect. After that, optimization model subjected to reliability constraint is developed for RRE PM scheduling at fixed interval. The optimal PM combination is obtained by minimizing the total cost in the whole life cycle for a supposed engine. Numerical investigations indicate that the subsystem's intrinsic reliability characteristic and the improvement factor of maintain operations are the most important parameters in RRE's PM scheduling management

  6. Thematic curriculum approach

    Directory of Open Access Journals (Sweden)

    Šefer Jasmina P.

    2003-01-01

    Full Text Available Thematic curriculum combines disciplines and media. The process is problem-oriented and the scenario most often follows the logic of exploring or storytelling. Those two approaches to teaching are appropriate because they fit into interdisciplinary and creative open-ended problem solving through play, as insisted upon by thematic curriculum. The matrix, where seven types of abilities intersect with five types of problems according to their degree of openness, defines well the outcomes of teaching. However, it did not prove to be suitable for planning the majority of activities in thematic curriculum, for it follows with difficulty the process of exploring or storytelling i.e. it disrupts the subject matter coherence of thematic curriculum. Therefore, it is suggested that matrix should be used for disciplinary curriculum planning but for that of thematic curriculum only in exclusive cases. The matrix should be used primarily as a framework for evaluating the distribution of various types of abilities and problem situations in teaching. The logic of diverse approaches to teaching reflects itself in the manner of planning and organizing the teaching process. Conceptual, visual-graphic, structural and other aids employed during educational process planning should suit the nature of the approach chosen. On the basis of qualitative investigations of educational process, in the present paper considerations are given to various approaches to teaching development of various drafts for the planning of teaching, and recognition of the logic of storytelling and exploring in thematic curriculum.

  7. The SKI*HI Model: Programming for Hearing Impaired Infants through Home Intervention, Home Visit Curriculum. Fourth Edition.

    Science.gov (United States)

    Clark, Thomas C.; Watkins, Susan

    The manual describes the SKI*HI Model, a comprehensive approach to identification and home intervention treatment of hearing impaired children and their families. The model features home programing in four basic areas: the home hearing aid program (nine lessons which facilitate the proper fit and acceptance of amplification by the child), home…

  8. Changing the Hidden Curriculum of Campus Rape Prevention and Education: Women's Self-Defense as a Key Protective Factor for a Public Health Model of Prevention.

    Science.gov (United States)

    McCaughey, Martha; Cermele, Jill

    2015-10-16

    Recent activist, policy, and government efforts to engage in campus rape prevention education (RPE), culminating in the 2014 White House Task Force recommendations to combat campus sexual assault, prompt a need to examine the concept of "prevention" in the context of sexual assault on U.S. college campuses and their surrounding community service agencies. This article reviews previous research on effective resistance to sexual assault, showing that self-defense is a well-established protective factor in a public health model of sexual assault prevention. The article goes on to show, through an examination of campus rape prevention efforts framed as "primary prevention," that self-defense is routinely excluded. This creates a hidden curriculum that preserves a gender status quo even while it strives for change. The article concludes with recommendations for how administrators, educators, facilitators, funding agencies, and others can incorporate self-defense into campus RPE for a more effective, data-driven set of sexual assault prevention efforts. © The Author(s) 2015.

  9. The Integrated Clinical Anatomy Program at Alfaisal University: an innovative model of teaching clinically applied functional anatomy in a hybrid curriculum.

    Science.gov (United States)

    Yaqinuddin, Ahmed; Ikram, Muhammad Faisal; Zafar, Muhammad; Eldin, Nivin Sharaf; Mazhar, Muhammad Atif; Qazi, Sadia; Shaikh, Aftab Ahmed; Obeidat, Akef; Al-Kattan, Khaled; Ganguly, Paul

    2016-03-01

    Anatomy has historically been a cornerstone in medical education regardless of specialty. It is essential for physicians to be able to perform a variety of tasks, including performing invasive procedures, examining radiological images, performing a physical examination of a patient, etc. Medical students have to be prepared for such tasks, and we can assist this by changing the way that we educate students in medical schools. Thus, newer medical curricula need to be designed according to needs of future physicians. In this report, we describe a unique program called the Integrated Clinical Anatomy Program (ICAP). The ICAP was developed at the College of Medicine of Alfaisal University in the Kingdom of Saudi Arabia. Here, we describe the unique features of this program, including the structure and facilities of the Anatomy Resource Center. The Anatomy Resource Center plays a pivotal role in engaging the students for faculty-directed structured laboratory sessions as well as peer-assisted uniform student-centered learning. The ICAP has shown great promise, as reflected by early results from a nationwide progress test. Students from all years of the Alfaisal University medical school scored significantly higher than the national average on the anatomy and physiology component of the nationwide progress test examination, with P values of 0.0179 and 0.0015, respectively. We believe that the ICAP can be used as a model for teaching clinically applied functional anatomy to medical students in a hybrid curriculum around the world. Copyright © 2016 The American Physiological Society.

  10. [What kind of ethical education for pharmacists is necessary? Can "the core curriculum model for pharmacology education" provide the needed guidance?].

    Science.gov (United States)

    Matsuda, Jun

    2009-07-01

    Section A of "The core curriculum model for pharmacy education" (2002)- "Learning about Humanism"- outlines the educational contents for ethics in pharmaceutical departments. People who read this section are likely to conclude that the cultivation of human sensitivity is of prime importance in ethics education in pharmacy. However, if a pharmacist found herself or himself on the horns of a moral dilemma during clinical practice, she/he may discover that human sensitivity alone may not provide the answer. When searching for ethically appropriate conduct in concrete cases, both moral insight and good judgment are necessary. The main contents of ethics education in a pharmaceutical department should be instruction in the ethics of medicine and pharmacy and practical exercises in handling moral dilemmas that pharmacists might encounter in actual situations. "Humanism" implies not only humanitarianism but also anthropocentricism. Plants, animals, and ecological systems are considered to be objects of ethical concern in some contemporary ethics, such as L. Siep's "Concrete Ethics (Konkrete Ethik, 2004)". The pharmacist's job specifications require her or him to treat laboratory animals ethically and to have environmental consciousness. Humanism-based ethics are too narrow for pharmacy ethics. Pharmacy students should learn a more comprehensive ethics that covers social ethics, bioethics, and environmental ethics. Such ethics and moral training should be given, especially, both before and after long-term practical training in hospitals and pharmacies.

  11. Systematic strategy in nursing curriculum in American, Canadian, Australian nursing and proposed way for applying it in Iranian nursing curriculum: A comparative study

    OpenAIRE

    Fatemeh Khorashadizadeh; Hosein Karimi Moonaghi

    2017-01-01

    ABSTRACT Introduction: Recently, a systematic strategy has used for improving quality of nursing curriculum that traditional curriculum is not suitable for it. The aim of the present study is to identify how the systematic strategy have applied in the nursing curriculum in the US, Canada and Australia and proposed methods for applying it in Iranian nursing curriculum. Methods: This comparative study was done according to Beredy’s model: Description, interpretation, juxtaposition,...

  12. Scale effects on solid rocket combustion instability behaviour

    Energy Technology Data Exchange (ETDEWEB)

    Greatrix, D. R. [Ryerson University, Department of Aerospace Engineering, Toronto, Ontario (Canada)

    2011-07-01

    The ability to understand and predict the expected internal behaviour of a given solid-propellant rocket motor under transient conditions is important. Research towards predicting and quantifying undesirable transient axial combustion instability symptoms necessitates a comprehensive numerical model for internal ballistic simulation under dynamic flow and combustion conditions. A numerical model incorporating pertinent elements, such as a representative transient, frequency-dependent combustion response to pressure wave activity above the burning propellant surface, is applied to the investigation of scale effects (motor size, i.e., grain length and internal port diameter) on influencing instability-related behaviour in a cylindrical-grain motor. The results of this investigation reveal that the motor's size has a significant influence on transient pressure wave magnitude and structure, and on the appearance and magnitude of an associated base pressure rise. (author)

  13. Scale Effects on Solid Rocket Combustion Instability Behaviour

    Directory of Open Access Journals (Sweden)

    David R. Greatrix

    2011-01-01

    Full Text Available The ability to understand and predict the expected internal behaviour of a given solid-propellant rocket motor under transient conditions is important. Research towards predicting and quantifying undesirable transient axial combustion instability symptoms necessitates a comprehensive numerical model for internal ballistic simulation under dynamic flow and combustion conditions. A numerical model incorporating pertinent elements, such as a representative transient, frequency-dependent combustion response to pressure wave activity above the burning propellant surface, is applied to the investigation of scale effects (motor size, i.e., grain length and internal port diameter on influencing instability-related behaviour in a cylindrical-grain motor. The results of this investigation reveal that the motor’s size has a significant influence on transient pressure wave magnitude and structure, and on the appearance and magnitude of an associated base pressure rise.

  14. Midwifery participatory curriculum development: Transformation through active partnership.

    Science.gov (United States)

    Sidebotham, Mary; Walters, Caroline; Chipperfield, Janine; Gamble, Jenny

    2017-07-01

    Evolving knowledge and professional practice combined with advances in pedagogy and learning technology create challenges for accredited professional programs. Internationally a sparsity of literature exists around curriculum development for professional programs responsive to regulatory and societal drivers. This paper evaluates a participatory curriculum development framework, adapted from the community development sector, to determine its applicability to promote engagement and ownership during the development of a Bachelor of Midwifery curriculum at an Australian University. The structures, processes and resulting curriculum development framework are described. A representative sample of key curriculum development team members were interviewed in relation to their participation. Qualitative analysis of transcribed interviews occurred through inductive, essentialist thematic analysis. Two main themes emerged: (1) 'it is a transformative journey' and (2) focused 'partnership in action'. Results confirmed the participatory curriculum development process provides symbiotic benefits to participants leading to individual and organisational growth and the perception of a shared curriculum. A final operational model using a participatory curriculum development process to guide the development of accredited health programs emerged. The model provides an appropriate structure to create meaningful collaboration with multiple stakeholders to produce a curriculum that is contemporary, underpinned by evidence and reflective of 'real world' practice. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. Curriculum Assessment Using Artificial Neural Network and Support Vector Machine Modeling Approaches: A Case Study. IR Applications. Volume 29

    Science.gov (United States)

    Chen, Chau-Kuang

    2010-01-01

    Artificial Neural Network (ANN) and Support Vector Machine (SVM) approaches have been on the cutting edge of science and technology for pattern recognition and data classification. In the ANN model, classification accuracy can be achieved by using the feed-forward of inputs, back-propagation of errors, and the adjustment of connection weights. In…

  16. Implementation of a "Learner-Driven" Curriculum: An Screening, Brief Intervention, and Referral to Treatment (SBIRT) Interdisciplinary Primary Care Model

    Science.gov (United States)

    Stanton, Marina R.; Atherton, W. Leigh; Toriello, Paul J.; Hodgson, Jennifer L.

    2012-01-01

    Although screening, brief intervention, and referral to treatment (SBIRT) has been a popular model to address potential substance abuse issues in primary care, there is a need for innovative approaches for training providers and staff on SBIRT protocols. An interdisciplinary approach to SBIRT training, named ICARE, was implemented at 3 different…

  17. Post-Secondary Education Development in South East Asia: A Model for Curriculum Development in Continuing Education

    Science.gov (United States)

    MacKinnon, Allan

    2012-01-01

    This article presents a model for continuing education that emanated from the author's involvement in the Participatory Action Research (PAR) component of Simon Fraser University's Adult Education for Economic Development (AEED) Project, funded by the Canadian International Development Agency (CIDA). The project's goal was to develop new centers…

  18. Proposed Model for a Streamlined, Cohesive, and Optimized K-12 STEM Curriculum with a Focus on Engineering

    Science.gov (United States)

    Locke, Edward

    2009-01-01

    This article presents a proposed model for a clear description of K-12 age-possible engineering knowledge content, in terms of the selection of analytic principles and predictive skills for various grades, based on the mastery of mathematics and science pre-requisites, as mandated by national or state performance standards; and a streamlined,…

  19. Rocket engine control and monitoring expert system

    Science.gov (United States)

    Ali, Moonis; Crawford, Roger

    1988-01-01

    This paper focuses on the application of expert systems technology to the automatic detection, verification and correction of anomalous rocket engine operations through interfacing with an intelligent adaptive control system. The design of a reliable and intelligent propulsion control and monitoring system is outlined which includes the architecture of an Integrated Expert System (IES) serving as the core component. The IES functions include automatic knowledge acquisition, integrated knowledge base, and fault diagnosis and prediction methodology. The results of fault analysis and diagnostic techniques are presented for an example fault in the SSME main combustion chamber injectors.

  20. Rocket and Missile Container Engineering Guide

    Science.gov (United States)

    1982-01-01

    complex equations which may, for the sake of expe- diency, be circumvented. To satisfy the intent of this handbook, it will suffice merely to be aware of...tabulates dm given h and Gm. 1-11 RATE OFTRAVEL To attain a required level of protection (G,.- factor), it has been shown that the item to be pro- tected...706-298 This page intentionally left blank. - 2-2 MISSILE OR ROCKET PROFILE SHILLELAGH • REDEYE LAUNCHER (CONTAINS .. MISSILE) M41A2 M41A3

  1. Ablative Material Testing at Lewis Rocket Lab

    Science.gov (United States)

    1997-01-01

    The increasing demand for a low-cost, reliable way to launch commercial payloads to low- Earth orbit has led to the need for inexpensive, expendable propulsion systems for new launch vehicles. This, in turn, has renewed interest in less complex, uncooled rocket engines that have combustion chambers and exhaust nozzles fabricated from ablative materials. A number of aerospace propulsion system manufacturers have utilized NASA Lewis Research Center's test facilities with a high degree of success to evaluate candidate materials for application to new propulsion devices.

  2. Rocket-Powered Parachutes Rescue Entire Planes

    Science.gov (United States)

    2010-01-01

    Small Business Innovation Research (SBIR) contracts with Langley Research Center helped BRS Aerospace, of Saint Paul, Minnesota, to develop technology that has saved 246 lives to date. The company s whole aircraft parachute systems deploy in less than 1 second thanks to solid rocket motors and are capable of arresting the descent of a small aircraft, lowering it safely to the ground. BRS has sold more than 30,000 systems worldwide, and the technology is now standard equipment on many of the world s top-selling aircraft. Parachutes for larger airplanes are in the works.

  3. ISHM Anomaly Lexicon for Rocket Test

    Science.gov (United States)

    Schmalzel, John L.; Buchanan, Aubri; Hensarling, Paula L.; Morris, Jonathan; Turowski, Mark; Figueroa, Jorge F.

    2007-01-01

    Integrated Systems Health Management (ISHM) is a comprehensive capability. An ISHM system must detect anomalies, identify causes of such anomalies, predict future anomalies, help identify consequences of anomalies for example, suggested mitigation steps. The system should also provide users with appropriate navigation tools to facilitate the flow of information into and out of the ISHM system. Central to the ability of the ISHM to detect anomalies is a clearly defined catalog of anomalies. Further, this lexicon of anomalies must be organized in ways that make it accessible to a suite of tools used to manage the data, information and knowledge (DIaK) associated with a system. In particular, it is critical to ensure that there is optimal mapping between target anomalies and the algorithms associated with their detection. During the early development of our ISHM architecture and approach, it became clear that a lexicon of anomalies would be important to the development of critical anomaly detection algorithms. In our work in the rocket engine test environment at John C. Stennis Space Center, we have access to a repository of discrepancy reports (DRs) that are generated in response to squawks identified during post-test data analysis. The DR is the tool used to document anomalies and the methods used to resolve the issue. These DRs have been generated for many different tests and for all test stands. The result is that they represent a comprehensive summary of the anomalies associated with rocket engine testing. Fig. 1 illustrates some of the data that can be extracted from a DR. Such information includes affected transducer channels, narrative description of the observed anomaly, and the steps used to correct the problem. The primary goal of the anomaly lexicon development efforts we have undertaken is to create a lexicon that could be used in support of an associated health assessment database system (HADS) co-development effort. There are a number of significant

  4. Water Rockets. Get Funny With Newton's Laws

    Directory of Open Access Journals (Sweden)

    Manuel Roca Vicent

    2017-01-01

    Full Text Available The study of the movement of the rocket has been used for decades to encourage students in the study of physics. This system has an undeniable interest to introduce concepts such as properties of gases, laws of Newton,  exchange  between  different  types  of  energy  and  its  conservation  or fluid  mechanics.  Our  works has  been  to  build  and  launch  these  rockets  in  different  educational  levels  and  in  each  of  these  ones  have introduced  the  part  of  Physics  more  suited  to  the  knowledge  of  our  students.  The  aim  of  the  learning experience  is  to  launch  the  rocket  as  far  as  possible  and  learn  to  predict  the  travelled  distance,  using Newton's  laws  and fluid  mechanics.  After  experimentation  we  demonstrated  to  be  able  to  control  the parameters that improve the performance of our rocket, such as the  fill factor, the volume and mass of the empty  bottle,  liquid  density,  launch  angle,  pressure  prior  air  release.  In addition, it is a fun experience can be attached to all levels of education in primary and high school.

  5. Encyclopedia: Satellites and Sounding Rockets, August 1959 - December 1969

    Science.gov (United States)

    1970-01-01

    Major space missions utilizing satellites or sounding rockets managed by the NASA Goddard Space Flight Center between August 1959 and December 1969 were documented. The information was presented in the following form: (1) description of each satellite project where Goddard was responsible for the spacecraft or the successful launch or both, with data such as launch characteristics, objectives, etc.; (2) description of each Goddard sounding rocket project, with the following data: sounding rocket type, vehicle number, experimental affiliation, and type of experiment; (3) brief description of current sounding rockets and launch vehicles; (4) table of tracking and data acquisition stations. Summary tables are also provided.

  6. Numerical Simulation of Rocket Exhaust Interaction with Lunar Soil Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Rocket plume impingement may cause significant damage and contaminate co-landed spacecraft and surrounding habitat structures during Lunar landing operations. Under...

  7. Unsupervised Anomaly Detection for Liquid-Fueled Rocket Prop...

    Data.gov (United States)

    National Aeronautics and Space Administration — Title: Unsupervised Anomaly Detection for Liquid-Fueled Rocket Propulsion Health Monitoring. Abstract: This article describes the results of applying four...

  8. Numerical Simulation of Rocket Exhaust Interaction with Lunar Soil Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Rocket plume impingement can cause significant damage and contaminate co-landing spacecraft and surrounding habitat structures during lunar landing operations. CFDRC...

  9. Electron-beam rocket acceleration of hydrogen pellets

    International Nuclear Information System (INIS)

    Tsai, C.C.; Foster, C.A.; Milora, S.L.; Schechter, D.E.; Whealton, J.H.

    1992-01-01

    A proof-of-principle device for characterizing electron-beam rocket pellet acceleration has been developed and operated during the last few years. Experimental data have been collected for thousands of accelerated hydrogen pellets under a variety of beam conditions. One intact hydrogen pellet was accelerated to a speed of 578 m/s by an electron beam of 10 kV, 0.8 A, and I ms. The collected data reveal the significant finding that the measured bum velocity of bare hydrogen pellets increases with the square of the beam voltage in a way that is qualitatively consistent with the theoretical prediction based on the neutral gas shielding (NGS) model. The measured bum velocity increases with the beam current or power and then saturates at values two to three times greater than that predicted by the NGS model. The discrepancy may result from low pellet strength and large beam-pellet interaction areas. Moreover, this feature may be the cause of the low measured exhaust velocity, which often exceeds the sonic velocity of the ablated gas. Consistent with the NGS model, the measured exhaust velocity increases in direct proportion to the beam current and in inverse proportion to the beam voltage. To alleviate the pellet strength problem, experiments have been performed with the hydrogen ice contained in a lightweight rocket casing or shell. Pellets in such sabots have the potential to withstand higher beam powers and achieve higher thrust-coupling efficiency. Some experimental results are reported and ways of accelerating pellets to higher velocity are discussed

  10. Managing the curriculum--for a change.

    Science.gov (United States)

    Manogue, M; Brown, G

    2007-05-01

    This article reports the model used to design a new dental curriculum, the design process used and its underlying rationale. The evidence base for the process is reviewed and discussed. Some suggestions are offered for those engaged in developing new curricula. The main conclusions drawn are that the design process needs to be managed openly and democratically; the alignment model is the most appropriate for designing dental curricula; the process of curriculum design is inextricably linked to organisational development; and the concepts of learning organisations, communities of practice and culture all have their part to play in the process of introducing deep innovations, such as new curricula'.

  11. A Study of Language Arts Curriculum Effectiveness with Gifted Learners.

    Science.gov (United States)

    VanTassel-Baska, Joyce; And Others

    1996-01-01

    This study of language arts curriculum effectiveness presents data supporting utilization of the Integrated Curriculum Model (ICM) with high-ability learners in various grouping contexts. Significant gains were demonstrated in literary analysis, persuasive writing, and linguistic competency for seven elementary classes using the ICM. Implications…

  12. Curriculum for Energy Use and Conservation Technicians. Final Report.

    Science.gov (United States)

    Hull Daniel M.

    A project designed a national curriculum model for Energy Conservation-and-Use Technicians (ECUTs) and developed and tested instructional materials for use in the courses. The two-year postsecondary ECUT curriculum was designed to provide an interdisciplinary technical base (electrical, mechanical, thermal, and fluidal principles) and technical…

  13. Auditing the Numeracy Demands of the Australian Curriculum

    Science.gov (United States)

    Goos, Merrilyn; Dole, Shelley; Geiger, Vince

    2012-01-01

    Numeracy is a general capability to be developed in all learning areas of the Australian Curriculum. We evaluated the numeracy demands of the F-10 curriculum, using a model of numeracy that incorporates mathematical knowledge, dispositions, tools, contexts, and a critical orientation to the use of mathematics. Findings of the history curriculum…

  14. Curriculum reform in South Africa: more time for what? | Shay ...

    African Journals Online (AJOL)

    Secondly, drawing on the CHE exemplars, the paper makes explicit the general curriculum reform principles that underpin the enabling structure. Finally, the paper describes how these reform principles translate into qualification-specific curriculum models which enable epistemic access and development. This research is ...

  15. Infusing Peaceful Heroes into the Communication Arts Curriculum.

    Science.gov (United States)

    Shatles, Diane

    This four-part paper presents aspects of a curriculum developed to counter the violent image of heroes in the media by presenting children with role models of men and women who are peacemakers. The paper's first section presents an overview and rationale of the program, stating that: (1) it is an infusion curriculum (not requiring additional…

  16. Pulse Detonation Rocket MHD Power Experiment

    Science.gov (United States)

    Litchford, Ron J.; Cook, Stephen (Technical Monitor)

    2002-01-01

    A pulse detonation research engine (MSFC (Marshall Space Flight Center) Model PDRE (Pulse Detonation Rocket Engine) G-2) has been developed for the purpose of examining integrated propulsion and magnetohydrodynamic power generation applications. The engine is based on a rectangular cross-section tube coupled to a converging-diverging nozzle, which is in turn attached to a segmented Faraday channel. As part of the shakedown testing activity, the pressure wave was interrogated along the length of the engine while running on hydrogen/oxygen propellants. Rapid transition to detonation wave propagation was insured through the use of a short Schelkin spiral near the head of the engine. The measured detonation wave velocities were in excess of 2500 m/s in agreement with the theoretical C-J velocity. The engine was first tested in a straight tube configuration without a nozzle, and the time resolved thrust was measured simultaneously with the head-end pressure. Similar measurements were made with the converging-diverging nozzle attached. The time correlation of the thrust and head-end pressure data was found to be excellent. The major purpose of the converging-diverging nozzle was to configure the engine for driving an MHD generator for the direct production of electrical power. Additional tests were therefore necessary in which seed (cesium-hydroxide dissolved in methanol) was directly injected into the engine as a spray. The exhaust plume was then interrogated with a microwave interferometer in an attempt to characterize the plasma conditions, and emission spectroscopy measurements were also acquired. Data reduction efforts indicate that the plasma exhaust is very highly ionized, although there is some uncertainty at this time as to the relative abundance of negative OH ions. The emission spectroscopy data provided some indication of the species in the exhaust as well as a measurement of temperature. A 24-electrode-pair segmented Faraday channel and 0.6 Tesla permanent

  17. Probable Rotation States of Rocket Bodies in Low Earth Orbit

    Science.gov (United States)

    Ojakangas, Gregory W.; Anz-Meador, P.; Cowardin, H.

    2012-01-01

    rotation states of model objects, and these are compared to data derived from physical models of the same objects, tested in the Optical Measurements Center at JSC. Comparison to relevant light curves from actual orbiting rocket bodies are also performed, and diagnostic features of such curves are examined.

  18. Failure characteristics analysis and fault diagnosis for liquid rocket engines

    CERN Document Server

    Zhang, Wei

    2016-01-01

    This book concentrates on the subject of health monitoring technology of Liquid Rocket Engine (LRE), including its failure analysis, fault diagnosis and fault prediction. Since no similar issue has been published, the failure pattern and mechanism analysis of the LRE from the system stage are of particular interest to the readers. Furthermore, application cases used to validate the efficacy of the fault diagnosis and prediction methods of the LRE are different from the others. The readers can learn the system stage modeling, analyzing and testing methods of the LRE system as well as corresponding fault diagnosis and prediction methods. This book will benefit researchers and students who are pursuing aerospace technology, fault detection, diagnostics and corresponding applications.

  19. Biofunctional properties of Eruca sativa Miller (rocket salad) hydroalcoholic extract.

    Science.gov (United States)

    Sultan, Khushbakht; Zakir, Muhammad; Khan, Haroon; Rauf, Abdur; Akber, Noor Ul; Khan, Murad Ali

    2016-01-01

    Eruca sativa Miller is a worldwide common alimentary plant (rocket leaves). The aim of this study was to correlate the potential in vitro scavenging activity of the E. sativa hydroalcoholic extract (HAE) with its in vivo hypoglycaemic effect. In DDPH free radical (DFR) and ferric-reducing antioxidant power assays, HAE in a concentration dependent manner (25-100 μg/mL) displayed a strong scavenging activity with maximum effect of 88% and 75% at 100 μg/mL, respectively. Daily administration of HAE (50 mg/kg; p.o.) in the in vivo model of alloxan-induced diabetic rabbits for 28 days showed significant reduction in glycaemia, also supported by recovery of body weight. In conclusion, our results give preliminary information on the potential use of this plant as a nutraceutical, useful to control and/or prevent a hyperglycaemic status.

  20. The FOXSI Solar Sounding Rocket Campaigns

    Science.gov (United States)

    Glesener, Lindsay; Krucker, Sam; Christe, Steven; Ishikawa, Shin-Nosuke; Buitrago-Casas, Juan Camilo; Ramsey, Brian; Gubarev, Mikhail; Takahashi, Tadayuki; Watanabe, Shin; Takeda, Shin'ichiro; hide

    2016-01-01

    The Focusing Optics X-ray Solar Imager (FOXSI) is, in its initial form, a sounding rocket experiment designed to apply the technique of focusing hard X-ray (HXR) optics to the study of fundamental questions about the high-energy Sun. Solar HXRs arise via bremsstrahlung from energetic electrons and hot plasma produced in solar flares and thus are one of the most direct diagnostics of flare-accelerated electrons and the impulsive heating of the solar corona. Previous missions have always been limited in sensitivity and dynamic range by the use of indirect (Fourier) imaging due to the lack of availability of direct focusing optics, but technological advances now make direct focusing accessible in the HXR regime (as evidenced by the NuSTAR spacecraft and several suborbital missions). The FOXSI rocket experiment develops and optimizes HXR focusing telescopes for the unique scientific requirements of the Sun. To date, FOXSI has completed two successful flights on 2012 November 02 and 2014 December 11 and is funded for a third flight. This paper gives a brief overview of the experiment, which is sensitive to solar HXRs in the 4-20 keV range, describes its first two flights, and gives a preview of plans for FOXSI-3.

  1. Gas core nuclear rocket feasibility project

    International Nuclear Information System (INIS)

    Howe, S.D.; DeVolder, B.; Thode, L.; Zerkle, D.

    1997-09-01

    The next giant leap for mankind will be the human exploration of Mars. Almost certainly within the next thirty years, a human crew will brave the isolation, the radiation, and the lack of gravity to walk on and explore the Red planet. However, because the mission distances and duration will be hundreds of times greater than the lunar missions, a human crew will face much greater obstacles and a higher risk than those experienced during the Apollo program. A single solution to many of these obstacles is to dramatically decrease the mission duration by developing a high performance propulsion system. The gas core nuclear rocket (GCNR) has the potential to be such a system. The gas core concept relies on the use of fluid dynamic forces to create and maintain a vortex. The vortex is composed of a fissile material which will achieve criticality and produce high power levels. By radiatively coupling to the surrounding fluids, extremely high temperatures in the propellant and, thus, high specific impulses can be generated. The ship velocities enabled by such performance may allow a 9 month round trip, manned Mars mission to be considered. Alternatively, one might consider slightly longer missions in ships that are heavily shielded against the intense Galactic Cosmic Ray flux to further reduce the radiation dose to the crew. The current status of the research program at the Los Alamos National Laboratory into the gas core nuclear rocket feasibility will be discussed

  2. The Off-plane Grating Rocket Experiment

    Science.gov (United States)

    Donovan, Benjamin

    2018-01-01

    The next generation of X-ray spectrometers necessitate significant increases in both resolution and effective area to achieve the science goals set forth in the 2010 Decadal Survey and the 2013 Astrophysics Roadmap. The Off-plane Grating Rocket Experiment (OGRE), an X-ray spectroscopy suborbital rocket payload currently scheduled for launch in Q3 2020, will serve as a testbed for several key technologies which can help achieve the desired performance increases of future spectrometers. OGRE will be the first instrument to fly mono-crystalline silicon X-ray mirrors developed at NASA Goddard Space Flight Center. The payload will also utilize an array of off-plane gratings manufactured at The Pennsylvania State University. Additionally, the focal plane will be populated with an array of four electron-multiplying CCDs developed by the Open University and XCAM Ltd. With these key technologies, OGRE hopes to achieve the highest resolution on-sky soft X-ray spectrum to date. We discuss the optical design, expected performance, and the current status of the payload.

  3. Solid Rocket Motor/Booster-Illustration

    Science.gov (United States)

    1976-01-01

    This image illustrates the solid rocket motor (SRM)/solid rocket booster (SRB) configuration. The Shuttle's two SRB's are the largest solids ever built and the first designed for refurbishment and reuse. Standing nearly 150-feet high, the twin boosters provide the majority of thrust for the first two minutes of flight, about 5.8 million pounds, augmenting the Shuttle's main propulsion system during liftoff. The major design drivers for the SRM's were high thrust and reuse. The desired thrust was achieved by using state-of-the-art solid propellant and by using a long cylindrical motor with a specific core design that allows the propellant to burn in a carefully controlled marner. At burnout, the boosters separate from the external tank and drop by parachute to the ocean for recovery and subsequent refurbishment. The boosters are designed to survive water impact at almost 60 miles per hour, maintain flotation with minimal damage, and preclude corrosion of the hardware exposed to the harsh seawater environment. Under the project management of the Marshall Space Flight Center, the SRB's are assembled and refurbished by the United Space Boosters. The SRM's are provided by the Morton Thiokol Corporation.

  4. A Flight Demonstration of Plasma Rocket Propulsion

    Science.gov (United States)

    Petro, Andrew; Chang-Diaz, Franklin; Schwenterly, WIlliam; Hitt, Michael; Lepore, Joseph

    2000-01-01

    The Advanced Space Propulsion Laboratory at the NASA Johnson Space Center has been engaged in the development of a variable specific impulse magnetoplasma rocket (V ASIMR) for several years. This type of rocket could be used in the future to propel interplanetary spacecraft and has the potential to open the entire solar system to human exploration. One feature of this propulsion technology is the ability to vary its specific impulse so that it can be operated in a mode that maximizes propellant efficiency or a mode that maximizes thrust. Variation of specific impulse and thrust enhances the ability to optimize interplanetary trajectories and results in shorter trip times and lower propellant requirements than with a fixed specific impulse. In its ultimate application for interplanetary travel, the VASIMR would be a multi-megawatt device. A much lower power system is being designed for demonstration in the 2004 timeframe. This first space demonstration would employ a lO-kilowatt thruster aboard a solar powered spacecraft in Earth orbit. The 1O-kilowatt V ASIMR demonstration unit would operate for a period of several months with hydrogen or deuterium propellant with a specific impulse of 10,000 seconds.

  5. Physiological and phytosanitary potential of rocket seeds

    Directory of Open Access Journals (Sweden)

    Jucilayne Fernandes Vieira

    2015-02-01

    Full Text Available The objective of this study was to evaluate the physiological and sanitary quality of seeds of rocket; the research was done at the Laboratory of Seed Analysis and greenhouse of the Department of Plant Science, Federal University of Pelotas (UFPel. Four lots of the cultivar "Antonella'' were tested for following features: initial and final moisture content, germination rate, first count of germination, accelerated aging with saline solution, dry matter contents, seedling shoot and root length, emergence speed index, emergence of seedlings in substrate, electrical conductivity and sanitary condition. A completely randomized design with four replications was used for all tests done and means were compared by Tukey test (P≤0.05. For all tests performed it was concluded that despite changes in the ranking of the best lots, there was agreement regarding the indication of the inferiority of the lot 3 in all tests and it was also observed that the incidence of fungi associated with seeds of rocket interfere with the physiological quality of the lots.

  6. Liquid fuel injection elements for rocket engines

    Science.gov (United States)

    Cox, George B., Jr. (Inventor)

    1993-01-01

    Thrust chambers for liquid propellant rocket engines include three principal components. One of these components is an injector which contains a plurality of injection elements to meter the flow of propellants at a predetermined rate, and fuel to oxidizer mixture ratio, to introduce the mixture into the combustion chamber, and to cause them to be atomized within the combustion chamber so that even combustion takes place. Evolving from these injectors are tube injectors. These tube injectors have injection elements for injecting the oxidizer into the combustion chamber. The oxidizer and fuel must be metered at predetermined rates and mixture ratios in order to mix them within the combustion chamber so that combustion takes place smoothly and completely. Hence tube injectors are subject to improvement. An injection element for a liquid propellant rocket engine of the bipropellant type is provided which includes tangential fuel metering orifices, and a plurality of oxidizer tube injection elements whose injection tubes are also provided with tangential oxidizer entry slots and internal reed valves.

  7. The integrated curriculum in medical education: AMEE Guide No. 96.

    Science.gov (United States)

    Brauer, David G; Ferguson, Kristi J

    2015-04-01

    The popularity of the term "integrated curriculum" has grown immensely in medical education over the last two decades, but what does this term mean and how do we go about its design, implementation, and evaluation? Definitions and application of the term vary greatly in the literature, spanning from the integration of content within a single lecture to the integration of a medical school's comprehensive curriculum. Taking into account the integrated curriculum's historic and evolving base of knowledge and theory, its support from many national medical education organizations, and the ever-increasing body of published examples, we deem it necessary to present a guide to review and promote further development of the integrated curriculum movement in medical education with an international perspective. We introduce the history and theory behind integration and provide theoretical models alongside published examples of common variations of an integrated curriculum. In addition, we identify three areas of particular need when developing an ideal integrated curriculum, leading us to propose the use of a new, clarified definition of "integrated curriculum", and offer a review of strategies to evaluate the impact of an integrated curriculum on the learner. This Guide is presented to assist educators in the design, implementation, and evaluation of a thoroughly integrated medical school curriculum.

  8. Addressing the immediate need for emergency providers in resource-limited settings: the model of a six-month emergency medicine curriculum in Haiti.

    Science.gov (United States)

    Rouhani, Shada A; Israel, Kerling; Leandre, Fernet; Pierre, Sosthène; Bollman, Brennan; Marsh, Regan H

    2018-04-06

    In many resource-limited settings, emergency medicine (EM) is underdeveloped and formal EM training limited. Residencies and fellowships are an ideal long-term solution but cannot meet immediate needs for emergency providers, while short-term programs are often too limited in content. We describe a third method successfully implemented in Haiti: a medium-duration certificate program to meet the immediate need for emergency specialists. In conjunction with the Haitian Ministry of Health and National Medical School, we developed and implemented a novel, 6-month EM certificate program to build human resources for health and emergency care capacity. The program consisted of didactic and supervised clinical components, covering core content in EM. Didactics included lectures, simulations, hands-on skill-sessions, and journal clubs. Supervised clinical time reinforced concepts and taught an EM approach to patient care. Fourteen physicians from around Haiti successfully completed the program; all improved from their pre-test to post-test. At the end of the program and 9-month post-program evaluations, participants rated the program highly, and most felt they used their new knowledge daily. Participants found clinical supervision and simulation particularly useful. Key components to our program's success included collaboration with the Ministry of Health and National Medical School, supervised clinical time, and the continual presence of a course director. The program could be improved by a more flexible curriculum and by grouping participants by baseline knowledge levels. Medium-duration certificate programs offer a viable option for addressing immediate human resource gaps in emergency care, and our program offers a model for implementation in resource-limited settings. Similar options should be considered for other emerging specialties in resource-limited settings.

  9. Orchestrating the Sound of Music: Analysis and Design of a University Music Education Curriculum.

    Science.gov (United States)

    Frederickson, Karen; Bates, Duane; Lamb, Roberta

    A research project examined the music education curriculum of Queen's University (Kingston, Ontario, Canada) through a research model that provided adequate, broadly based evidence from diverse but relevant sources. The purpose was to evaluate the existing curriculum and then design and implement a revised curriculum that would be more effective…

  10. A Curriculum Development Route Map for a Technology Enhanced Learning Era

    Science.gov (United States)

    Castañeda, Linda; Prendes, Paz

    2013-01-01

    In this paper we are trying to present a model of analysis that includes a comprehensive perspective of the state of the art in the specialized literature about curriculum development. From this theoretical approach, we get a complete curriculum overview. Including insights into: what are the curriculum principal elements, what we already know…

  11. Methodological Investigation of the Curriculum Evaluation Theses Completed between the Years 2006-2015 in Turkey

    Science.gov (United States)

    Aslan, Mecit; Saglam, Mustafa

    2017-01-01

    The aim of this research is to examine postgraduate theses on curriculum evaluation completed between the years 2006-2015 in Turkey in terms of various aspects such as university, year, curriculum which is evaluated, curriculum evaluation model, research method, design, sample type, data collection methods, data analysis technique. In order to…

  12. Results from a model of course-based undergraduate research in the first- and second-year chemistry curriculum

    Science.gov (United States)

    Weaver, Gabriela

    2014-03-01

    The Center for Authentic Science Practice in Education (CASPiE) is a project funded by the URC program of the NSF Chemistry Division. The purpose of CASPiE was to provide students in first and second year laboratory courses with authentic research experiences as a gateway to more traditional forms of undergraduate research. Each research experience is a 6- to 8-week laboratory project based on and contributing to the research work of the experiment's author through data or preparation of samples. The CASPiE program has resulted in a model for engaging students in undergraduate research early in their college careers. To date, CASPiE has provided that experience to over 6000 students at 17 different institutions. Evaluation data collected has included student surveys, interviews and longitudinal analysis of performance. We have found that students' perceptions of their understanding of the material and the discipline increase over the course of the semester, whereas they are seen to decrease in the control courses. Students demonstrate a greater ability to explain the meaning and purpose of their experimental procedures and results and provide extensions to the experimental design, compared not only to control courses but also compared to inquiry-based courses. Longitudinal analysis of grades indicates a possible benefit to performance in courses related to the discipline two and three years later. A similar implementation in biology courses has demonstrated an increase in critical thinking scores. Work supported by the National Science Foundation, Division of Chemistry.

  13. Developing a curriculum for emergency medicine residency orientation programs.

    Science.gov (United States)

    Lucas, Raymond; Choudhri, Tina; Roche, Colleen; Ranniger, Claudia; Greenberg, Larrie

    2014-05-01

    New residents enter emergency medicine (EM) residency programs with varying EM experiences, which makes residency orientation programs challenging to design. There is a paucity of literature to support best practices. We report on a curriculum development project for EM residency orientation using the Kern Model. Components of the revised curriculum include administrative inculcation into the program; delivering skills and knowledge training to ensure an entering level of competence; setting expectations for learning in the overall residency curriculum; performing an introductory performance evaluation; and socialization into the program. Post-implementation resident surveys found the new curriculum to be helpful in preparing them for the first year of training. The Kern Model was a relevant and useful method for redesigning a new-resident orientation curriculum. Copyright © 2014 Elsevier Inc. All rights reserved.

  14. Simulation of Axial Combustion Instability Development and Suppression in Solid Rocket Motors

    OpenAIRE

    David R. Greatrix

    2009-01-01

    In the design of solid-propellant rocket motors, the ability to understand and predict the expected behaviour of a given motor under unsteady conditions is important. Research towards predicting, quantifying, and ultimately suppressing undesirable strong transient axial combustion instability symptoms necessitates a comprehensive numerical model for internal ballistic simulation under dynamic flow and combustion conditions. An updated numerical model incorporating recent developments in predi...

  15. Experimental and numerical analysis of the slag entrapment in Ariane 5 solid rocket motors

    OpenAIRE

    Rodríguez Rodríguez, Cristóbal

    2010-01-01

    The accumulation of alumina is an inherent problem in Solid Rocket Motors (SRM). In the V on Karman Institute this problem have been studied using a scale model of Ariane 5 booster where alumina is modeled with water. The Stokes number is maintained. After a parametric test, the relevant parameter found to be responsible for the entrapment of particles, was the horizontal distance between the tip of the isolation ring (inhibitor) and the nozzle tip. This parameter is named as Obstacle t...

  16. Multi-Stage Hybrid Rocket Conceptual Design for Micro-Satellites Launch using Genetic Algorithm

    Science.gov (United States)

    Kitagawa, Yosuke; Kitagawa, Koki; Nakamiya, Masaki; Kanazaki, Masahiro; Shimada, Toru

    The multi-objective genetic algorithm (MOGA) is applied to the multi-disciplinary conceptual design problem for a three-stage launch vehicle (LV) with a hybrid rocket engine (HRE). MOGA is an optimization tool used for multi-objective problems. The parallel coordinate plot (PCP), which is a data mining method, is employed in the post-process in MOGA for design knowledge discovery. A rocket that can deliver observing micro-satellites to the sun-synchronous orbit (SSO) is designed. It consists of an oxidizer tank containing liquid oxidizer, a combustion chamber containing solid fuel, a pressurizing tank and a nozzle. The objective functions considered in this study are to minimize the total mass of the rocket and to maximize the ratio of the payload mass to the total mass. To calculate the thrust and the engine size, the regression rate is estimated based on an empirical model for a paraffin (FT-0070) propellant. Several non-dominated solutions are obtained using MOGA, and design knowledge is discovered for the present hybrid rocket design problem using a PCP analysis. As a result, substantial knowledge on the design of an LV with an HRE is obtained for use in space transportation.

  17. Development of high performance hybrid rocket fuels

    Science.gov (United States)

    Zaseck, Christopher R.

    In this document I discuss paraffin fuel combustion and investigate the effects of additives on paraffin entrainment and regression. In general, hybrid rockets offer an economical and safe alternative to standard liquid and solid rockets. However, slow polymeric fuel regression and low combustion efficiency have limited the commercial use of hybrid rockets. Paraffin is a fast burning fuel that has received significant attention in the 2000's and 2010's as a replacement for standard fuels. Paraffin regresses three to four times faster than polymeric fuels due to the entrainment of a surface melt layer. However, further regression rate enhancement over the base paraffin fuel is necessary for widespread hybrid rocket adoption. I use a small scale opposed flow burner to investigate the effect of additives on the combustion of paraffin. Standard additives such as aluminum combust above the flame zone where sufficient oxidizer levels are present. As a result no heat is generated below the flame itself. In small scale opposed burner experiments the effect of limited heat feedback is apparent. Aluminum in particular does not improve the regression of paraffin in the opposed burner. The lack of heat feedback from additive combustion limits the applicability of the opposed burner. In turn, the results obtained in the opposed burner with metal additive loaded hybrid fuels do not match results from hybrid rocket experiments. In addition, nano-scale aluminum increases melt layer viscosity and greatly slows the regression of paraffin in the opposed flow burner. However, the reactive additives improve the regression rate of paraffin in the opposed burner where standard metals do not. At 5 wt.% mechanically activated titanium and carbon (Ti-C) improves the regression rate of paraffin by 47% in the opposed burner. The mechanically activated Ti C likely reacts in or near the melt layer and provides heat feedback below the flame region that results in faster opposed burner regression

  18. The Effect of Atmospheric Pressure on Rocket Thrust -- Part I.

    Science.gov (United States)

    Leitner, Alfred

    1982-01-01

    The first of a two-part question asks: Does the total thrust of a rocket depend on the surrounding pressure? The answer to this question is provided, with accompanying diagrams of rockets. The second part of the question (and answer) are provided in v20 n7, p479, Oct 1982 of this journal. (Author/JN)

  19. Collaboration with and without Coauthorship: Rocket Science Versus Economic Science

    OpenAIRE

    Barnett, William

    2015-01-01

    This essay is about my prior experiences as a rocket scientist on Apollo rocket engines, with comparison to my subsequent experiences at the Federal Reserve, and in academia, with emphasis upon differences in collaboration and scientific methodology. A primary difference is in the emphasis on measurement.

  20. Project Stratos; reaching space with a student-built rocket

    NARCIS (Netherlands)

    Haneveer, M.

    2013-01-01

    In the spring of 2009 a team of 15 TU Delft students travelled to Kiruna, Sweden with only one goal: to launch the rocket Stratos I they had been working on for 2 years to an altitude of over 12km, thereby claiming the European Amateur Rocket Altitude record. These students were part of Delft

  1. NASA Goddard Space Flight Center presents Enhancing Standards Based Science Curriculum through NASA Content Relevancy: A Model for Sustainable Teaching-Research Integration Dr. Robert Gabrys, Raquel Marshall, Dr. Evelina Felicite-Maurice, Erin McKinley

    Science.gov (United States)

    Marshall, R. H.; Gabrys, R.

    2016-12-01

    NASA Goddard Space Flight Center has developed a systemic educator professional development model for the integration of NASA climate change resources into the K-12 classroom. The desired outcome of this model is to prepare teachers in STEM disciplines to be globally engaged and knowledgeable of current climate change research and its potential for content relevancy alignment to standard-based curriculum. The application and mapping of the model is based on the state education needs assessment, alignment to the Next Generation Science Standards (NGSS), and implementation framework developed by the consortium of district superintendents and their science supervisors. In this presentation, we will demonstrate best practices for extending the concept of inquiry-based and project-based learning through the integration of current NASA climate change research into curriculum unit lessons. This model includes a significant teacher development component focused on capacity development for teacher instruction and pedagogy aimed at aligning NASA climate change research to related NGSS student performance expectations and subsequent Crosscutting Concepts, Science and Engineering Practices, and Disciplinary Core Ideas, a need that was presented by the district steering committee as critical for ensuring sustainability and high-impact in the classroom. This model offers a collaborative and inclusive learning community that connects classroom teachers to NASA climate change researchers via an ongoing consultant/mentoring approach. As a result of the first year of implementation of this model, Maryland teachers are implementing NGSS unit lessons that guide students in open-ended research based on current NASA climate change research.

  2. Hidden Curriculum as One of Current Issue of Curriculum

    Science.gov (United States)

    Alsubaie, Merfat Ayesh

    2015-01-01

    There are several issues in the education system, especially in the curriculum field that affect education. Hidden curriculum is one of current controversial curriculum issues. Many hidden curricular issues are the result of assumptions and expectations that are not formally communicated, established, or conveyed within the learning environment.…

  3. Meeting Report: Genomics in the Undergraduate Curriculum--Rocket Science or Basic Science?

    Science.gov (United States)

    Campbell, A. Malcolm

    2002-01-01

    At the 102nd annual meeting of the American Society for Microbiology (ASM) in Salt Lake City, Utah, members of the Genome Consortium for Active Teaching and faculty from around the world gathered to discuss educational genomics. The focus of the gathering was a series of presentations by faculty who have successfully incorporated genomics and…

  4. Rethinking the mathematics curriculum

    CERN Document Server

    Hoyles, Celia; Woodhouse, Geoffrey

    1998-01-01

    At a time when political interest in mathematics education is at its highest, this book demonstrates that the issues are far from straightforward. A wide range of international contributors address such questions as: What is mathematics, and what is it for? What skills does mathematics education need to provide as technology advances? What are the implications for teacher education? What can we learn from past attempts to change the mathematics curriculum? Rethinking the Mathematics Curriculum offers stimulating discussions, showing much is to be learnt from the differences in culture, national expectations, and political restraints revealed in the book. This accessible book will be of particular interest to policy makers, curriculum developers, educators, researchers and employers as well as the general reader.

  5. Learners, teachers and curriculum

    DEFF Research Database (Denmark)

    Petersen, Karen Bjerg

    2008-01-01

    of virtual e-learning, interviews with teachers and 10 learner participants in a virtual classroom setting, and discourse analysis of curriculum developed for the particular e-learning course The research has taken place in the context of a study of e-learning and virtual teaching of Danish as a Second...... language for adults. The research results indicate that teachers seem to compensate by trying to create virtual communities of learning. Learners, however, experience disembedded relations. Conversely, curriculum development, on tends to ‘exploit’ the conditions of disembedding social relations in e-learning......, locationally distant”. The aim of the paper is to analyse and discuss how different positions in e-learning settings result in different answers to modernity. These settings can be applied to either teacher, learner or curriculum positions. The research was based on a qualitative longitudinal case study...

  6. Curriculum at the Interface

    DEFF Research Database (Denmark)

    This Symposium presents curriculum design and content issues in a Scandinavian business school at its Centenary. The aim is an exploration of an educational institution at the interface of the European Higher Education Area (EHEA) within the historical trends of the European Union. We hope...... this step will empirically document how the goals of the European Higher Education Area are functionally linked with the entrepreneurial sensibilities of administration, faculty, and administrative staff during the concrete operations of work. The series of presentations are framed between trans......-cultural epistemological foundations in insight-based critical realism and inquiry into how the institutional entrepreneurs – the program directors – negotiate opportunities, risks, and tensions in curriculum and program implementation. Detailed case presentations take up curriculum effort to successfully engage issues...

  7. ICT and Curriculum Change

    Directory of Open Access Journals (Sweden)

    Joke Voogt

    2005-01-01

    Full Text Available The change towards the information society implies that many countries have to change their curricula, because students need to develop competencies that are not addressed in the traditional curricula. A case study approach was applied to examine curriculum changes in ICT-supported pedagogical practices from 28 countries. The analysis focused on curriculum content and goals of the ICT-supported pedagogical practices, how these aims were implemented in practice and which outcomes for students and teachers could be observed. The results showed that the curriculum content often was not new but rather was delivered in a different way. Many ICT-supported pedagogical practices strove to realize new goals important for lifelong learning in an information society. Content and goals were offered in curricular settings, often crossing the traditional boundaries of academic subjects. In many of the cases students worked on topics that were meaningful to them.

  8. Culture Matters in Successful Curriculum Change: An International Study of the Influence of National and Organizational Culture Tested With Multilevel Structural Equation Modeling

    NARCIS (Netherlands)

    Jippes, M.; Driessen, E.W.; Broers, N.J.; Majoor, G.D.; Gijselaers, W.H.; Vleuten, C.P.M. van der

    2015-01-01

    PURPOSE: National culture has been shown to play a role in curriculum change in medical schools, and business literature has described a similar influence of organizational culture on change processes in organizations. This study investigated the impact of both national and organizational culture on

  9. A Proposed Theoretical Model Using the Work of Thomas Kuhn, David Ausubel, and Mauritz Johnson as a Basis for Curriculum and Instruction Decisions in Science Education.

    Science.gov (United States)

    Bowen, Barbara Lynn

    This study presents a holistic framework which can be used as a basis for decision-making at various points in the curriculum-instruction development process as described by Johnson in a work published in 1967. The proposed framework has conceptual bases in the work of Thomas S. Kuhn and David P. Ausubel and utilizes the work of several perceptual…

  10. Developing a Consensus-Driven, Core Competency Model to Shape Future Audio Engineering Technology Curriculum: A Web-Based Modified Delphi Study

    Science.gov (United States)

    Tough, David T.

    2009-01-01

    The purpose of this online study was to create a ranking of essential core competencies and technologies required by AET (audio engineering technology) programs 10 years in the future. The study was designed to facilitate curriculum development and improvement in the rapidly expanding number of small to medium sized audio engineering technology…

  11. Photometric observations of local rocket-atmosphere interactions

    Science.gov (United States)

    Greer, R. G. H.; Murtagh, D. P.; Witt, G.; Stegman, J.

    1983-06-01

    Photometric measurements from rocket flights which recorded a strong foreign luminance in the altitude region between 90 and 130 km are reported. From one Nike-Orion rocket the luminance appeared on both up-leg and down-leg; from a series of Petrel rockets the luminance was apparent only on the down-leg. The data suggest that the luminance may be distributed mainly in the wake region along the rocket trajectory. The luminance is believed to be due to a local interaction between the rocket and the atmosphere although the precise nature of the interaction is unknown. It was measured at wavelengths ranging from 275 nm to 1.61 microns and may be caused by a combination of reactions.

  12. Developments in REDES: The Rocket Engine Design Expert System

    Science.gov (United States)

    Davidian, Kenneth O.

    1990-01-01

    The Rocket Engine Design Expert System (REDES) was developed at NASA-Lewis to collect, automate, and perpetuate the existing expertise of performing a comprehensive rocket engine analysis and design. Currently, REDES uses the rigorous JANNAF methodology to analyze the performance of the thrust chamber and perform computational studies of liquid rocket engine problems. The following computer codes were included in REDES: a gas properties program named GASP; a nozzle design program named RAO; a regenerative cooling channel performance evaluation code named RTE; and the JANNAF standard liquid rocket engine performance prediction code TDK (including performance evaluation modules ODE, ODK, TDE, TDK, and BLM). Computational analyses are being conducted by REDES to provide solutions to liquid rocket engine thrust chamber problems. REDES was built in the Knowledge Engineering Environment (KEE) expert system shell and runs on a Sun 4/110 computer.

  13. Intercultural gerontology curriculum: Principles and practice.

    Science.gov (United States)

    Mercer, Lorraine

    2017-03-28

    The internationalization of universities and the aging of the global population are two current issues that converge and challenge undergraduate gerontology curriculum development in Canada. One response to this challenge is to envision an intercultural gerontology curriculum. What might this curriculum encompass? How might it be taught? An exploratory study was undertaken to address these two questions. This paper presents findings from this study based primarily on interviews with university-based stakeholders from Canada, the United States, and Europe. Thematic analysis of the interviews resulted in five themes: multiple perspectives on cultural diversity; the dynamic nature of cultural diversity and aging; flow of an intercultural curriculum; institutional culture and intercultural curricula; and principles and practice for intercultural gerontology. Framed by principles of gerontology theory and educational approaches, this paper focuses on the principles and practice suggested by study participants. Scaffolding learning, active learning strategies, experiential learning opportunities, teacher modelling, and internet-based learning are discussed as key to intercultural learning. An appendix includes a list of resources that may be useful to developing an intercultural gerontology curriculum.

  14. A proposed core curriculum for dental English education in Japan.

    Science.gov (United States)

    Rodis, Omar M M; Barroga, Edward; Barron, J Patrick; Hobbs, James; Jayawardena, Jayanetti A; Kageyama, Ikuo; Kalubi, Bukasa; Langham, Clive; Matsuka, Yoshizo; Miyake, Yoichiro; Seki, Naoko; Oka, Hiroko; Peters, Martin; Shibata, Yo; Stegaroiu, Roxana; Suzuki, Kazuyoshi; Takahashi, Shigeru; Tsuchiya, Hironori; Yoshida, Toshiko; Yoshimoto, Katsuhiko

    2014-11-18

    Globalization of the professions has become a necessity among schools and universities across the world. It has affected the medical and dental professions in terms of curriculum design and student and patient needs. In Japan, where medicine and dentistry are taught mainly in the Japanese language, profession-based courses in English, known as Medical English and Dental English, have been integrated into the existing curriculum among its 83 medical and 29 dental schools. Unfortunately, there is neither a core curriculum nor a model syllabus for these courses. This report is based on a survey, two discussion forums, a workshop, and finally, the drafting of a proposed core curriculum for dental English approved by consensus of the participants from each university. The core curriculum covers the theoretical aspects, including dental English terms and oral pathologies; and practical aspects, including blended learning and dentist-patient communication. It is divided into modules and is recommended to be offered for at least two semesters. The core curriculum is expected to guide curriculum developers in schools where dental English courses are yet to be offered or are still in their early development. It may also serve as a model curriculum to medical and dental schools in countries in Asia, Europe, Africa, and Central and South America, where English is not the medium of instruction.

  15. Enrichment Zoning Options for the Small Nuclear Rocket Engine (SNRE)

    Energy Technology Data Exchange (ETDEWEB)

    Bruce G. Schnitzler; Stanley K. Borowski

    2010-07-01

    Advancement of U.S. scientific, security, and economic interests through a robust space exploration program requires high performance propulsion systems to support a variety of robotic and crewed missions beyond low Earth orbit. In NASA’s recent Mars Design Reference Architecture (DRA) 5.0 study (NASA-SP-2009-566, July 2009), nuclear thermal propulsion (NTP) was again selected over chemical propulsion as the preferred in-space transportation system option because of its high thrust and high specific impulse (-900 s) capability, increased tolerance to payload mass growth and architecture changes, and lower total initial mass in low Earth orbit. An extensive nuclear thermal rocket technology development effort was conducted from 1955-1973 under the Rover/NERVA Program. The Small Nuclear Rocket Engine (SNRE) was the last engine design studied by the Los Alamos National Laboratory during the program. At the time, this engine was a state-of-the-art design incorporating lessons learned from the very successful technology development program. Past activities at the NASA Glenn Research Center have included development of highly detailed MCNP Monte Carlo transport models of the SNRE and other small engine designs. Preliminary core configurations typically employ fuel elements with fixed fuel composition and fissile material enrichment. Uniform fuel loadings result in undesirable radial power and temperature profiles in the engines. Engine performance can be improved by some combination of propellant flow control at the fuel element level and by varying the fuel composition. Enrichment zoning at the fuel element level with lower enrichments in the higher power elements at the core center and on the core periphery is particularly effective. Power flattening by enrichment zoning typically results in more uniform propellant exit temperatures and improved engine performance. For the SNRE, element enrichment zoning provided very flat radial power profiles with 551 of the 564

  16. Development Testing of 1-Newton ADN-Based Rocket Engines

    Science.gov (United States)

    Anflo, K.; Gronland, T.-A.; Bergman, G.; Nedar, R.; Thormählen, P.

    2004-10-01

    With the objective to reduce operational hazards and improve specific and density impulse as compared with hydrazine, the Research and Development (R&D) of a new monopropellant for space applications based on AmmoniumDiNitramide (ADN), was first proposed in 1997. This pioneering work has been described in previous papers1,2,3,4 . From the discussion above, it is clear that cost savings as well as risk reduction are the main drivers to develop a new generation of reduced hazard propellants. However, this alone is not enough to convince a spacecraft builder to choose a new technology. Cost, risk and schedule reduction are good incentives, but a spacecraft supplier will ask for evidence that this new propulsion system meets a number of requirements within the following areas: This paper describes the ongoing effort to develop a storable liquid monopropellant blend, based on AND, and its specific rocket engines. After building and testing more than 20 experimental rocket engines, the first Engineering Model (EM-1) has now accumulated more than 1 hour of firing-time. The results from test firings have validated the design. Specific impulse, combustion stability, blow-down capability and short pulse capability are amongst the requirements that have been demonstrated. The LMP-103x propellant candidate has been stored for more than 1 year and initial material compatibility screening and testing has started. 1. Performance &life 2. Impact on spacecraft design &operation 3. Flight heritage Hereafter, the essential requirements for some of these areas are outlined. These issues are discussed in detail in a previous paper1 . The use of "Commercial Of The Shelf" (COTS) propulsion system components as much as possible is essential to minimize the overall cost, risk and schedule. This leads to the conclusion that the Technology Readiness Level (TRL) 5 has been reached for the thruster and propellant. Furthermore, that the concept of ADN-based propulsion is feasible.

  17. Rocket Testing and Integrated System Health Management

    Science.gov (United States)

    Figueroa, Fernando; Schmalzel, John

    2005-01-01

    Integrated System Health Management (ISHM) describes a set of system capabilities that in aggregate perform: determination of condition for each system element, detection of anomalies, diagnosis of causes for anomalies, and prognostics for future anomalies and system behavior. The ISHM should also provide operators with situational awareness of the system by integrating contextual and timely data, information, and knowledge (DIaK) as needed. ISHM capabilities can be implemented using a variety of technologies and tools. This chapter provides an overview of ISHM contributing technologies and describes in further detail a novel implementation architecture along with associated taxonomy, ontology, and standards. The operational ISHM testbed is based on a subsystem of a rocket engine test stand. Such test stands contain many elements that are common to manufacturing systems, and thereby serve to illustrate the potential benefits and methodologies of the ISHM approach for intelligent manufacturing.

  18. Rocket Engine Innovations Advance Clean Energy

    Science.gov (United States)

    2012-01-01

    During launch countdown, at approximately T-7 seconds, the Space Shuttle Main Engines (SSMEs) roar to life. When the controllers indicate normal operation, the solid rocket boosters ignite and the shuttle blasts off. Initially, the SSMEs throttle down to reduce stress during the period of maximum dynamic pressure, but soon after, they throttle up to propel the orbiter to 17,500 miles per hour. In just under 9 minutes, the three SSMEs burn over 1.6 million pounds of propellant, and temperatures inside the main combustion chamber reach 6,000 F. To cool the engines, liquid hydrogen circulates through miles of tubing at -423 F. From 1981to 2011, the Space Shuttle fleet carried crew and cargo into orbit to perform a myriad of unprecedented tasks. After 30 years and 135 missions, the feat of engineering known as the SSME boasted a 100-percent flight success rate.

  19. Electronic timer for sounding rocket payload use

    Science.gov (United States)

    Williams, C. P.

    1986-01-01

    An electronic timer has been developed for sounding rocket use. The timer uses CMOS technology for low power consumption and has a battery back-up to keep the timing circuit active in case of a dropout on the payload power bus. Time-event decoding is done by programming EPROM's which enable a +28 volt dc sourcing output. There are 32 discrete outputs which can provide +28 volt dc into a minimum load impedance of 150 ohms. Inputs are designed to operate on standard CMOS voltage levels, but they can withstand +28 volts dc without damage. The timer can be started by either 'G' or lift-off switch closure or umbilical release at lift-off.

  20. Advanced tube-bundle rocket thrust chamber

    Science.gov (United States)

    Kazaroff, John M.; Pavli, Albert J.

    1990-01-01

    An advanced rocket thrust chamber for future space application is described along with an improved method of fabrication. Potential benefits of the concept are improved cyclic life, reusability, and performance. Performance improvements are anticipated because of the enhanced heat transfer into the coolant which will enable higher chamber pressure in expander cycle engines. Cyclic life, reusability and reliability improvements are anticipated because of the enhanced structural compliance inherent in the construction. The method of construction involves the forming of the combustion chamber with a tube-bundle of high conductivity copper or copper alloy tubes, and the bonding of these tubes by an electroforming operation. Further, the method of fabrication reduces chamber complexity by incorporating manifolds, jackets, and structural stiffeners while having the potential for thrust chamber cost and weight reduction.