WorldWideScience

Sample records for designed experiment measuring

  1. How Good is Your User Experience? Measuring and Designing Interactions

    Directory of Open Access Journals (Sweden)

    Wildner Raimund

    2015-11-01

    Full Text Available Form and function are important dimensions of consumer choice, but there is more in our increasingly digital world. It is not only products per se that need to be designed but the whole interaction between consumers and brands. The whole UX or user experience is more important than ever before. Digitalism nowadays is everywhere, and even mundane products are becoming more digital (e.g. ovens, while others evolve that are purely digital (e.g. PayPal.

  2. The Bolund experiment - design of measurement campaign using CFD

    DEFF Research Database (Denmark)

    Bechmann, Andreas; Johansen, Jeppe; Sørensen, Niels N.

    the upcoming measurement campaign. The simulation results are used for estimating rational positions of measuring masts and instrumentation. A total of ten measuring masts are proposed consisting of two 16 m masts, six 9 m masts and two 5 m masts. The masts are instrumented with 12 cup anemometers for mean...

  3. Design and interpretation of experiments to measure the effective removal section.

    CERN Document Server

    Desdin, L

    2001-01-01

    Paper is devoted to develop a single analytical instrument to design and interpret experiment to measure the neutron removal cross sections. There were analyzed the influence of the geometrical and nuclear parameters into the neutron removal cross sections values measured

  4. Accuracy optimization of high-speed AFM measurements using Design of Experiments

    DEFF Research Database (Denmark)

    Tosello, Guido; Marinello, F.; Hansen, Hans Nørgaard;

    2010-01-01

    , the estimated dimensions of measured features. The definition of scan settings is based on a comprehensive optimization that targets maximization of information from collected data and minimization of measurement uncertainty and scan time. The Design of Experiments (DOE) technique is proposed and applied...

  5. Accuracy optimization of high-speed AFM measurements using Design of Experiments

    DEFF Research Database (Denmark)

    Tosello, Guido; Marinello, F.; Hansen, Hans Nørgaard

    2010-01-01

    , the estimated dimensions of measured features. The definition of scan settings is based on a comprehensive optimization that targets maximization of information from collected data and minimization of measurement uncertainty and scan time. The Design of Experiments (DOE) technique is proposed and applied......Atomic Force Microscopy (AFM) is being increasingly employed in industrial micro/nano manufacturing applications and integrated into production lines. In order to achieve reliable process and product control at high measuring speed, instrument optimization is needed. Quantitative AFM measurement...

  6. Using High-Fidelity Computational Fluid Dynamics to Help Design a Wind Turbine Wake Measurement Experiment

    Science.gov (United States)

    Churchfield, M.; Wang, Q.; Scholbrock, A.; Herges, T.; Mikkelsen, T.; Sjöholm, M.

    2016-09-01

    We describe the process of using large-eddy simulations of wind turbine wake flow to help design a wake measurement campaign. The main goal of the experiment is to measure wakes and wake deflection that result from intentional yaw misalignment under a variety of atmospheric conditions at the Scaled Wind Farm Technology facility operated by Sandia National Laboratories in Lubbock, Texas. Prior simulation studies have shown that wake deflection may be used for wind-plant control that maximizes plant power output. In this study, simulations are performed to characterize wake deflection and general behavior before the experiment is performed to ensure better upfront planning. Beyond characterizing the expected wake behavior, we also use the large-eddy simulation to test a virtual version of the lidar we plan to use to measure the wake and better understand our lidar scan strategy options. This work is an excellent example of a “simulation-in-the-loop” measurement campaign.

  7. A student designed experiment measuring the speed of sound as a function of altitude

    CERN Document Server

    Santostasi, G; Maharjan, P; McAdon, C; Nguyesn, N T; Poudel, S; Pradhan, S; Roshan, D; Wagle, M

    2008-01-01

    Relatively inexpensive and readily commercially available equipment (such as digital recorders, MP3 portable speakers and tie-pin microphones), allowed a team of students from McNeese State University to measure the speed of sound in the atmosphere as a function of altitude. The experiment was carried as a payload (in the context of a NASA funded student program called La-ACES) on a high altitude balloon that reached a maximum altitude of 101,000 feet. Not withstanding substantial environmental noise, our particular experimental design allowed for the filtering of the signal out of the noise, thus achieving remarkable accuracy and precision. The speed of sound measurement was then used to set limits on the abundances of the main molecular components of the atmosphere (diatomic nitrogen and oxygen). Bayesian analysis was used to set meaningful values on the uncertainty of our limits. It is our experience that students find intutive and appealing this type of probability method.

  8. Preliminary experiment design of graphite dust emission measurement under accident conditions for HTGR

    Energy Technology Data Exchange (ETDEWEB)

    Peng, Wei, E-mail: pengwei@tsinghua.edu.cn [Institute of Nuclear and New Energy Technology of Tsinghua University, Advanced Nuclear Energy Technology Cooperation Innovation Center, The Key Laboratory of Advanced Nuclear Engineering and Safety, Ministry of Education, Beijing 100084 (China); Chen, Tao; Sun, Qi; Wang, Jie [Institute of Nuclear and New Energy Technology of Tsinghua University, Advanced Nuclear Energy Technology Cooperation Innovation Center, The Key Laboratory of Advanced Nuclear Engineering and Safety, Ministry of Education, Beijing 100084 (China); Yu, Suyuan, E-mail: suyuan@tsinghua.edu.cn [Center for Combustion Energy, The Key Laboratory for Thermal Science and Power Engineering, Ministry of Education, Tsinghua University, Beijing 100084 (China)

    2017-05-15

    Highlights: • A theoretical analysis is used to predict the total graphite dust release for an AVR LOCA. • Similarity criteria must be satisfied between the experiment and the actual HTGR system. • Model experiments should be conducted to predict the graphite dust resuspension rate. - Abstract: The graphite dust movement behavior is significant for the safety analyses of high-temperature gas cooled reactor (HTGR). The graphite dust release for accident conditions is an important source term for HTGR safety analyses. Depressurization release tests are not practical in HTGR because of a radioactivity release to the environment. Thus, a theoretical analysis and similarity principles were used to design a group of modeling experiments. Modeling experiments for fan start-up and depressurization process and actual experiments of helium circulator start-up in an HTGR were used to predict the rate of graphite dust resuspension and the graphite dust concentration, which can be used to predict the graphite dust release during accidents. The modeling experiments are easy to realize and the helium circulator start-up test does not harm the reactor system or the environment, so this experiment program is easily achieved. The revised Rock’n’Roll model was then used to calculate the AVR reactor release. The calculation results indicate that the total graphite dust releases during a LOCA will be about 0.65 g in AVR.

  9. Scenarios and performance measures for advanced ISDN satellite design and experiments

    Science.gov (United States)

    Pepin, Gerard R.

    1991-01-01

    Described here are the contemplated input and expected output for the Interim Service Integrated Services Digital Network (ISDN) Satellite (ISIS) and Full Service ISDN Satellite (FSIS) Models. The discrete event simulations of these models are presented with specific scenarios that stress ISDN satellite parameters. Performance measure criteria are presented for evaluating the advanced ISDN communication satellite designs of the NASA Satellite Communications Research (SCAR) Program.

  10. Comparison of non-polarising electrode designs for measuring electrical properties in biogeophysics experiments

    Science.gov (United States)

    West, L. J.; Hubbard, C. G.; Morris, K.; Shaw, S.

    2009-12-01

    An increasing number of laboratory studies are investigating the link between microbial biogeochemical processes, such as the bioreduction of Fe(III) and sulfate, and geophysical responses. Self Potential (SP) and Induced Polarization (IP) studies both use non-polarisable electrodes to measure these responses. Commonly used electrodes include Ag with AgCl coating, in direct contact with the solution chemistry of the experiment being performed. However, this arrangement can lead to alteration and degradation of the AgCl coating, for example by formation of AgS, resulting in signals from a galvanic response. In this contribution, we directly compare the performance of two alternative electrode arrangements for monitoring SP and IP in laboratory column experiments. The first arrangement uses inexpensive, plastic-bodied, commercially available Ag/AgCl reference electrodes in a KCl gel, offering ease of use. The second arrangement uses miniaturized, laboratory-constructed Pb/PbCl2 “Petiau” electrodes. Petiau electrodes are commonly used in field SP investigations and their dimensions can be tailored for specific laboratory experiment requirements. The performance of these electrodes in aqueous solutions of known conductivity was compared. The measured SP between electrode pairs in the same conductive solution, which should theoretically be zero, was < 2 mV for Petiau electrodes and < 1.2 mV for Ag/AgCl electrodes. However, Petiau electrodes showed greater accuracy and reproducibility when used for conductivity (IP) measurements. The results from the use of both types of electrodes in column experiments with biologically active sediments will be reported.

  11. Designing preclinical perceptibility measures to evaluate topical vaginal gel formulations: relating user sensory perceptions and experiences to formulation properties.

    Science.gov (United States)

    Morrow, Kathleen M; Fava, Joseph L; Rosen, Rochelle K; Vargas, Sara; Shaw, Julia G; Kojic, E Milu; Kiser, Patrick F; Friend, David R; Katz, David F

    2014-01-01

    Abstract The effectiveness of any biomedical prevention technology relies on both biological efficacy and behavioral adherence. Microbicide trials have been hampered by low adherence, limiting the ability to draw meaningful conclusions about product effectiveness. Central to this problem may be an inadequate conceptualization of how product properties themselves impact user experience and adherence. Our goal is to expand the current microbicide development framework to include product "perceptibility," the objective measurement of user sensory perceptions (i.e., sensations) and experiences of formulation performance during use. For vaginal gels, a set of biophysical properties, including rheological properties and measures of spreading and retention, may critically impact user experiences. Project LINK sought to characterize the user experience in this regard, and to validate measures of user sensory perceptions and experiences (USPEs) using four prototype topical vaginal gel formulations designed for pericoital use. Perceptibility scales captured a range of USPEs during the product application process (five scales), ambulation after product insertion (six scales), and during sexual activity (eight scales). Comparative statistical analyses provided empirical support for hypothesized relationships between gel properties, spreading performance, and the user experience. Project LINK provides preliminary evidence for the utility of evaluating USPEs, introducing a paradigm shift in the field of microbicide formulation design. We propose that these user sensory perceptions and experiences initiate cognitive processes in users resulting in product choice and willingness-to-use. By understanding the impact of USPEs on that process, formulation development can optimize both drug delivery and adherence.

  12. Optimal design of measurement settings for quantum-state-tomography experiments

    Science.gov (United States)

    Li, Jun; Huang, Shilin; Luo, Zhihuang; Li, Keren; Lu, Dawei; Zeng, Bei

    2017-09-01

    Quantum state tomography is an indispensable but costly part of many quantum experiments. Typically, it requires measurements to be carried out in a number of different settings on a fixed experimental setup. The collected data are often informationally overcomplete, with the amount of information redundancy depending on the particular set of measurement settings chosen. This raises a question about how one should optimally take data so that the number of measurement settings necessary can be reduced. Here, we cast this problem in terms of integer programming. For a given experimental setup, standard integer-programming algorithms allow us to find the minimum set of readout operations that can realize a target tomographic task. We apply the method to certain basic and practical state-tomographic problems in nuclear-magnetic-resonance experimental systems. The results show that considerably fewer readout operations can be found using our technique than by using the previous greedy search strategy. Therefore, our method could be helpful for simplifying measurement schemes to minimize the experimental effort.

  13. Designing learning experiences

    National Research Council Canada - National Science Library

    Collins, Jannette

    2007-01-01

    Creation of significant learning experiences follows basic steps of instructional design related to situational factors, goals and objectives, feedback and evaluation methods, teaching and learning...

  14. Designing Urban Experiences

    DEFF Research Database (Denmark)

    Jantzen, Christian; Vetner, Mikael

    2008-01-01

    traditional urban planning aspects such as infrastructure, environmental factors and aesthetics, but has also dealt with the design of urban experiences. Through an introduction of the framework of the structure of experiences, this article examines how urban experiences can be understood and analysed...

  15. Experimenting with a design experiment

    Directory of Open Access Journals (Sweden)

    Bakker, Judith

    2012-12-01

    Full Text Available The design experiment is an experimental research method that aims to help design and further develop new (policy instruments. For the development of a set of guidelines for the facilitation of citizens’ initiatives by local governments, we are experimenting with this method. It offers good opportunities for modeling interventions by testing their instrumental validity –the usefulness for the intended practical purposes. At the same time design experiments are also useful for evaluating the empirical validity of theoretical arguments and the further development of these arguments in the light of empirical evidence (by using e.g. the technique of pattern matching. We describe how we have applied this methodology in two cases and discuss our research approach. We encountered some unexpected difficulties, especially in the cooperation with professionals and citizens. These difficulties complicate the valid attribution of causal effects to the use of the new instrument. However, our preliminary conclusion is that design experiments are useful in our field of study

    El experimento de diseño es un método de investigación experimental que tiene como objetivo diseñar y desarrollar posteriormente nuevas herramientas (políticas. En este artículo experimentamos con este método para desarrollar un conjunto de directrices que permitan a los gobiernos locales facilitar las iniciativas ciudadanas. El método ofrece la oportunidad de modelar las intervenciones poniendo a prueba su validez instrumental (su utilidad para el fin práctico que se proponen. Al mismo tiempo, los experimentos de diseño son útiles también para evaluar la validez empírica de las discusiones teóricas y el posterior desarrollo de esas discusiones a la luz de la evidencia empírica (usando, por ejemplo, técnicas de concordancia de patrones. En este trabajo describimos cómo hemos aplicado este método a dos casos y discutimos nuestro enfoque de

  16. Sequential Design of Experiments

    Energy Technology Data Exchange (ETDEWEB)

    Anderson-Cook, Christine Michaela [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-06-30

    A sequential design of experiments strategy is being developed and implemented that allows for adaptive learning based on incoming results as the experiment is being run. The plan is to incorporate these strategies for the NCCC and TCM experimental campaigns to be run in the coming months. This strategy for experimentation has the advantages of allowing new data collected during the experiment to inform future experimental runs based on their projected utility for a particular goal. For example, the current effort for the MEA capture system at NCCC plans to focus on maximally improving the quality of prediction of CO2 capture efficiency as measured by the width of the confidence interval for the underlying response surface that is modeled as a function of 1) Flue Gas Flowrate [1000-3000] kg/hr; 2) CO2 weight fraction [0.125-0.175]; 3) Lean solvent loading [0.1-0.3], and; 4) Lean solvent flowrate [3000-12000] kg/hr.

  17. Democratic design experiments

    DEFF Research Database (Denmark)

    Ehn, Pelle; Brandt, Eva; Halse, Joachim

    2016-01-01

    we here see design engagements which are both controversial in their commitment to agendas of social change and experimental in the sense that they openly probe for what can possibly be enacted. In this conversation we want to explore how such engagements may be seen as democratic design experiments...

  18. Democratic design experiments

    DEFF Research Database (Denmark)

    Ehn, Pelle; Brandt, Eva; Halse, Joachim

    2016-01-01

    we here see design engagements which are both controversial in their commitment to agendas of social change and experimental in the sense that they openly probe for what can possibly be enacted. In this conversation we want to explore how such engagements may be seen as democratic design experiments...

  19. A Design of Experiments (DOE) approach to optimise temperature measurement accuracy in Solid Oxide Fuel Cell (SOFC)

    Science.gov (United States)

    Barari, F.; Morgan, R.; Barnard, P.

    2014-11-01

    In SOFC, accurately measuring the hot-gas temperature is challenging due to low gas velocity, high wall temperature, complex flow geometries and relatively small pipe diameter. Improper use of low cost thermometry system such as standard Type K thermocouples (TC) may introduce large measurement error. The error could have a negative effect on the thermal management of the SOFC systems and consequential reduction in efficiency. In order to study the factors affecting the accuracy of the temperature measurement system, a mathematical model of a TC inside a pipe was defined and numerically solved. The model calculated the difference between the actual and the measured gas temperature inside the pipe. A statistical Design of Experiment (DOE) approach was applied to the modelling data to compute the interaction effect between variables and investigate the significance of each variable on the measurement errors. In this study a full factorial DOE design with six variables (wall temperature, gas temperature, TC length, TC diameter and TC emissivity) at two levels was carried out. Four different scenarios, two sets of TC length (6 - 10.5 mm and 17 - 22 mm) and two different sets of temperature range (550 - 650 °C and 750 - 850 °C), were proposed. DOE analysis was done for each scenario and results were compared to identify key parameters affecting the accuracy of a particular temperature reading.

  20. Design of an experiment to measure the decay heat of an irradiated PWR fuel: MERCI experiment; Conception d'une experience de mesure de la puissance residuelle d'un combustible irradie: l'experience MERCI

    Energy Technology Data Exchange (ETDEWEB)

    Bourganel, St

    2002-11-01

    After a reactor shutdown, a significant quantity of energy known as 'decay heat' continues to be generated from the irradiated fuel. This heat source is due to the disintegration energy of fission products and actinides. Decay heat determination of an irradiated fuel is of the utmost importance for safety analysis as the design cooling systems, spent fuel transport, or handling. Furthermore, the uncertainty on decay heat has a straight economic impact. The unloading fuel spent time is an example. The purpose of MERCI experiment (irradiated fuel decay heat measurement) consists in qualifying computer codes, particularly the DARWIN code system developed by the CEA in relation to industrial organizations, as EDF, FRAMATOME and COGEMA. To achieve this goal, a UOX fuel is irradiated in the vicinity of the OSIRIS research reactor, and then the decay heat is measured by using a calorimeter. The objective is to reduce the decay heat uncertainties from 8% to 3 or 4% at short cooling times. A full simulation on computer of the MERCI experiment has been achieved: fuel irradiation analysis is performed using transport code TRIPOLI4 and evolution code DARWIN/PEPIN2, and heat transfer with CASTEM2000 code. The results obtained are used for the design of this experiment. Moreover, we propose a calibration procedure decreasing the influence of uncertainty measurements and an interpretation method of the experimental results and evaluation of associated uncertainties. (author)

  1. Designing learning experiences.

    Science.gov (United States)

    Collins, Jannette

    2007-01-01

    Creation of significant learning experiences follows basic steps of instructional design related to situational factors, goals and objectives, feedback and evaluation methods, teaching and learning activities, alignment of the preceding elements, and course evaluation. Goals should reflect what students will learn at the end of the course and what will still be with them several years later. Objectives should focus on learner performance, not teacher performance, and on behavior, not subject matter; there should be only one learning outcome per objective. Students learn more and retain their knowledge longer if they acquire it in an active rather than a passive manner. The situational factors, goals and objectives, feedback and evaluation, and teaching and learning activities should all reflect and support each other. The act of course evaluation closes the educational loop of design, implement, evaluate, and modify. (c) RSNA, 2007.

  2. Real Life Experiences with Experience Design

    DEFF Research Database (Denmark)

    Dalsgård, Peter; Halskov, Kim

    2006-01-01

    Experience Design is an emergent field of study, and various approaches to the field abound. In this paper, we take a pragmatic approach to identifying key aspects of an experience design process, by reporting on a project involving the design of experience-oriented applications of interactive...... technologies for knowledge dissemination and marketing, in cooperation with public institutions and businesses. We argue that collaborative formulation of core design intentions and values is a valuable instrument in guiding experience design processes, and present three cases from this project, two of which...... the installations, the core values established to guide the design process and the intended use contexts. We argue that the installations present a broad spectrum of experience design installations that can assist designers in understanding the relations between core values, intentions, use context and interface...

  3. Design of Computer Experiments

    DEFF Research Database (Denmark)

    Dehlendorff, Christian

    The main topic of this thesis is design and analysis of computer and simulation experiments and is dealt with in six papers and a summary report. Simulation and computer models have in recent years received increasingly more attention due to their increasing complexity and usability. Software...... that the sources of variation of the simulation model can be divided in two components corresponding to changes in the environmental factors (the uncontrollable factor settings) and to random variation. Moreover, the structure of the environmental effects can be estimated, which can be used to put the system...... in a more robust operating mode. The interpolation technique called Kriging is the topic of Paper F, which is a widely applied technique for building so called models-for-the-model (metamodels). We propose a method that handles both qualitative and quantitative factors, which is not covered by the standard...

  4. User Experience Design in Webpage Design

    Institute of Scientific and Technical Information of China (English)

    许钰伟

    2014-01-01

    User experience design is becoming more and more important. It originates from network as well as screen products interactive with users, whose scope is very wide. Although research orientations are different, their objective is the same, that is, to make users enjoy the simplest usage mode and reduce thinking in use; Although there is uncertainty, for some specific user group, the similarity of user experience can be recognized by excellent design;Although user experience is at the initial stage, with higher demand of comfort degree in surfing the internet, user experience design will be the core of future website design.

  5. Design Experiments in Educational Research.

    Science.gov (United States)

    Cobb, Paul; Confrey, Jere; diSessa, Andrea; Lehrer, Richard; Schauble, Leona

    2003-01-01

    Indicates the range of purposes and variety of settings in which design experiments have been conducted, delineating five crosscutting features that collectively differentiate design experiments from other methodologies. Clarifies what is involved in preparing for and carrying out a design experiment and in conducting a retrospective analysis of…

  6. Cost Optimal System Identification Experiment Design

    DEFF Research Database (Denmark)

    Kirkegaard, Poul Henning

    the experiment design are not based on obtained experimental data. Instead the decisions are based on the expected experimental data assumed to be obtained from the measurements, estimated based on prior information and engineering judgement. The design method provides a system identification experiment design...

  7. Application of multi-factorial design of experiments to successfully optimize immunoassays for robust measurements of therapeutic proteins.

    Science.gov (United States)

    Ray, Chad A; Patel, Vimal; Shih, Judy; Macaraeg, Chris; Wu, Yuling; Thway, Theingi; Ma, Mark; Lee, Jean W; Desilva, Binodh

    2009-02-20

    Developing a process that generates robust immunoassays that can be used to support studies with tight timelines is a common challenge for bioanalytical laboratories. Design of experiments (DOEs) is a tool that has been used by many industries for the purpose of optimizing processes. The approach is capable of identifying critical factors and their interactions with a minimal number of experiments. The challenge for implementing this tool in the bioanalytical laboratory is to develop a user-friendly approach that scientists can understand and apply. We have successfully addressed these challenges by eliminating the screening design, introducing automation, and applying a simple mathematical approach for the output parameter. A modified central composite design (CCD) was applied to three ligand binding assays. The intra-plate factors selected were coating, detection antibody concentration, and streptavidin-HRP concentrations. The inter-plate factors included incubation times for each step. The objective was to maximize the logS/B (S/B) of the low standard to the blank. The maximum desirable conditions were determined using JMP 7.0. To verify the validity of the predictions, the logS/B prediction was compared against the observed logS/B during pre-study validation experiments. The three assays were optimized using the multi-factorial DOE. The total error for all three methods was less than 20% which indicated method robustness. DOE identified interactions in one of the methods. The model predictions for logS/B were within 25% of the observed pre-study validation values for all methods tested. The comparison between the CCD and hybrid screening design yielded comparable parameter estimates. The user-friendly design enables effective application of multi-factorial DOE to optimize ligand binding assays for therapeutic proteins. The approach allows for identification of interactions between factors, consistency in optimal parameter determination, and reduced method

  8. Touchstone: Exploratory Design of Experiments

    OpenAIRE

    2007-01-01

    International audience; Touchstone is an open-source experiment design platform designed to help establish a solid research foundation for HCI in the area of novel interaction techniques. Touchstone includes a design platform for exploring alternative designs of controlled laboratory experiments, a run platform for running subjects and a limited analysis platform for advice and access to on-line statistics packages. Designed for HCI researchers and their students, Touchstone facilitates the p...

  9. Design of an Experiment to Measure ann Using 3H(γ, pnn at HIγS★

    Directory of Open Access Journals (Sweden)

    Friesen F.Q.L.

    2016-01-01

    Full Text Available We provide an update on the development of an experiment at TUNL for determining the 1S0 neutron-neutron (nn scattering length (ann from differential cross-section measurements of three-body photodisintegration of the triton. The experiment will be conducted using a linearly polarized gamma-ray beam at the High Intensity Gamma-ray Source (HIγS and tritium gas contained in thin-walled cells. The main components of the planned experiment are a 230 Ci gas target system, a set of wire chambers and silicon strip detectors on each side of the beam axis, and an array of neutron detectors on each side beyond the silicon detectors. The protons emitted in the reaction are tracked in the wire chambers and their energy and position are measured in silicon strip detectors. The first iteration of the experiment will be simplified, making use of a collimator system, and silicon detectors to interrogate the main region of interest near 90° in the polar angle. Monte-Carlo simulations based on rigorous 3N calculations have been conducted to validate the sensitivity of the experimental setup to ann.

  10. Spatial experiences and interaction design

    DEFF Research Database (Denmark)

    Dalsgård, Peter

    2006-01-01

    IT is rapidly spreading to non-desktop environments, and is increasingly being used for post-functional purposes. Recent contributions within the field of interaction design have indicated a tight coupling between physico-spatial and experiential issues, both on a technological and on a theoretical...... level. However, interaction design and HCI yet has little to offer designers working with physico-spatial and experiential issues in practical design cases. In this paper, I argue that experiments that explore spatial and experiential aspects are crucial in developing the practice of interaction design....... These  aspects may be brought to the forefront by engaging in, reflecting upon, and reporting from physico-spatial design experiments, and by making spatial and experience-oriented design representations part of the design process. These experiments may be supported by design representations inspired...

  11. Design, implementation and first measurements with the Medipix2-MXR detector at the Compact Muon Solenoid experiment

    Energy Technology Data Exchange (ETDEWEB)

    Ball, A; Bell, A; Hegeman, J; Mueller, S; Macpherson, A; Tsesmelis, E [CERN, CH-1211 Geneva 23 (Switzerland); Butler, A; Butler, P; Lansley, S; Pfeiffer, D; Silverwood, H [Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch (New Zealand); Hall-Wilton, R [European Spallation Source ESS AB, St Algatan 4, Lund (Sweden); Keen, G [Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy (NY) (United States); Krofcheck, D [Department of Physics, University of Auckland, Private Bag 92019, Auckland (New Zealand); Pospisil, S; Vykydal, Z, E-mail: Dorothea.Pfeiffer@cern.ch [Institute of Experimental and Applied Physics (IEAP), Czech Technical University (CTU), Horska 3a/22, Prague (Czech Republic)

    2011-08-15

    The Medipix detector is the first device dedicated to measuring mixed-field radiation in the CMS (Compact Muon Solenoid) experiment cavern and able to distinguish between different particle types. Medipix2-MXR chips bump bonded to silicon sensors with various neutron conversion layers developed by the IEAP CTU in Prague were successfully installed for the 2008 LHC start-up in the CMS experimental and services caverns to measure the flux of various particle types, in particular neutrons. They have operated almost continuously during the 2010 run period, and the results shown here are from the proton run between the beginning of July and the end of October 2010. Clear signals are seen and different particle types have been observed during regular LHC luminosity running, and an agreement in the measured flux is found with the simulations. These initial results are promising, and indicate that these devices have the potential for further and future LHC and high energy physics applications as radiation monitoring devices for mixed field environments, including neutron flux monitoring. Further extensions are foreseen in the near future to increase the performance of the detector and its coverage for monitoring in CMS.

  12. Design, implementation and first measurements with the Medipix2-MXR detector at the Compact Muon Solenoid experiment

    Science.gov (United States)

    Ball, A.; Bell, A.; Butler, A.; Butler, P.; Hall-Wilton, R.; Hegeman, J.; Lansley, S.; Keen, G.; Krofcheck, D.; Mueller, S.; Macpherson, A.; Pfeiffer, D.; Pospisil, S.; Silverwood, H.; Tsesmelis, E.; Vykydal, Z.

    2011-08-01

    The Medipix detector is the first device dedicated to measuring mixed-field radiation in the CMS (Compact Muon Solenoid) experiment cavern and able to distinguish between different particle types. Medipix2-MXR chips bump bonded to silicon sensors with various neutron conversion layers developed by the IEAP CTU in Prague were successfully installed for the 2008 LHC start-up in the CMS experimental and services caverns to measure the flux of various particle types, in particular neutrons. They have operated almost continuously during the 2010 run period, and the results shown here are from the proton run between the beginning of July and the end of October 2010. Clear signals are seen and different particle types have been observed during regular LHC luminosity running, and an agreement in the measured flux is found with the simulations. These initial results are promising, and indicate that these devices have the potential for further and future LHC and high energy physics applications as radiation monitoring devices for mixed field environments, including neutron flux monitoring. Further extensions are foreseen in the near future to increase the performance of the detector and its coverage for monitoring in CMS.

  13. Structural Assembly Demonstration Experiment (SADE) experiment design

    Science.gov (United States)

    Akin, D. L.; Bowden, M. L.

    1982-03-01

    The Structural Assembly Demonstration Experiment concept is to erect a hybrid deployed/assembled structure as an early space experiment in large space structures technology. The basic objectives can be broken down into three generic areas: (1) by performing assembly tasks both in space and in neutral buoyancy simulation, a mathematical basis will be found for the validity conditions of neutral buoyancy, thus enhancing the utility of water as a medium for simulation of weightlessness; (2) a data base will be established describing the capabilities and limitations of EVA crewmembers, including effects of such things as hardware size and crew restraints; and (3) experience of the M.I.T. Space Systems Lab in neutral buoyancy simulation of large space structures assembly indicates that the assembly procedure may create the largest loads that a structure will experience during its lifetime. Data obtained from the experiment will help establish an accurate loading model to aid designers of future space structures.

  14. Antennas fundamentals, design, measurement

    CERN Document Server

    Long, Maurice

    2009-01-01

    This comprehensive revision (3rd Edition) is a senior undergraduate or first-year graduate level textbook on antenna fundamentals, design, performance analysis, and measurements. In addition to its use as a formal course textbook, the book's pragmatic style and emphasis on the fundamentals make it especially useful to engineering professionals who need to grasp the essence of the subject quickly but without being mired in unnecessary detail. This new edition was prepared for a first year graduate course at Southern Polytechnic State University in Georgia. It provides broad coverage of antenna

  15. Designing experiments through compressed sensing.

    Energy Technology Data Exchange (ETDEWEB)

    Young, Joseph G.; Ridzal, Denis

    2013-06-01

    In the following paper, we discuss how to design an ensemble of experiments through the use of compressed sensing. Specifically, we show how to conduct a small number of physical experiments and then use compressed sensing to reconstruct a larger set of data. In order to accomplish this, we organize our results into four sections. We begin by extending the theory of compressed sensing to a finite product of Hilbert spaces. Then, we show how these results apply to experiment design. Next, we develop an efficient reconstruction algorithm that allows us to reconstruct experimental data projected onto a finite element basis. Finally, we verify our approach with two computational experiments.

  16. Spaceflight payload design flight experience G-408

    Science.gov (United States)

    Durgin, William W.; Looft, Fred J.; Sacco, Albert, Jr.; Thompson, Robert; Dixon, Anthony G.; Roberti, Dino; Labonte, Robert; Moschini, Larry

    1992-01-01

    Worcester Polytechnic Institute's first payload of spaceflight experiments flew aboard Columbia, STS-40, during June of 1991 and culminated eight years of work by students and faculty. The Get Away Special (GAS) payload was installed on the GAS bridge assembly at the aft end of the cargo bay behind the Spacelab Life Sciences (SLS-1) laboratory. The Experiments were turned on by astronaut signal after reaching orbit and then functioned for 72 hours. Environmental and experimental measurements were recorded on three cassette tapes which, together with zeolite crystals grown on orbit, formed the basis of subsequent analyses. The experiments were developed over a number of years by undergraduate students meeting their project requirements for graduation. The experiments included zeolite crystal growth, fluid behavior, and microgravity acceleration measurement in addition to environmental data acquisition. Preparation also included structural design, thermal design, payload integration, and experiment control. All of the experiments functioned on orbit and the payload system performed within design estimates.

  17. Introduction to Statistically Designed Experiments

    Energy Technology Data Exchange (ETDEWEB)

    Heaney, Mike

    2016-09-13

    Statistically designed experiments can save researchers time and money by reducing the number of necessary experimental trials, while resulting in more conclusive experimental results. Surprisingly, many researchers are still not aware of this efficient and effective experimental methodology. As reported in a 2013 article from Chemical & Engineering News, there has been a resurgence of this methodology in recent years (http://cen.acs.org/articles/91/i13/Design-Experiments-Makes-Comeback.html?h=2027056365). This presentation will provide a brief introduction to statistically designed experiments. The main advantages will be reviewed along with the some basic concepts such as factorial and fractional factorial designs. The recommended sequential approach to experiments will be introduced and finally a case study will be presented to demonstrate this methodology.

  18. RELIABILITY AND DESIGN OF EXPERIMENTS

    Directory of Open Access Journals (Sweden)

    Adrian Stere PARIS

    2013-05-01

    Full Text Available The mechanical reliability uses many statistical tools to find the factors of influence and their levels inthe optimization of parameters on the basis of experimental data. Design of Experiments (DOE techniquesenables designers to determine simultaneously the individual and interactive effects of many factors that couldaffect the output results in any design. The state-of-the-art in the domain implies extended use of software and abasic mathematical knowledge, mainly applying ANOVA and the regression analysis of experimental data.

  19. Disability Experience and Measurement.

    Science.gov (United States)

    Verbrugge, Lois M

    2016-10-01

    Top themes of international research on disability in the past three decades are discussed: disability dynamics, buffers and barriers for disability, disability trends, and disability among very old persons. Each theme is highlighted by research examples. Turning to measurement, I discuss traditional measures of disability, new longer and shorter ones, and composites like disability-free life expectancy, noting their merits. Contemporary models of disability are presented, ranging from visual images to formal theories. The article ends on how scientists can facilitate movement of disability science into health care practice and policy.

  20. Design and analysis of experiments

    CERN Document Server

    Dean, Angela; Draguljić, Danel

    2017-01-01

    This textbook takes a strategic approach to the broad-reaching subject of experimental design by identifying the objectives behind an experiment and teaching practical considerations that govern design and implementation, concepts that serve as the basis for the analytical techniques covered. Rather than a collection of miscellaneous approaches, chapters build on the planning, running, and analyzing of simple experiments in an approach that results from decades of teaching the subject. In most experiments, the procedures can be reproduced by readers, thus giving them a broad exposure to experiments that are simple enough to be followed through their entire course. Outlines of student and published experiments appear throughout the text and as exercises at the end of the chapters. The authors develop the theory of estimable functions and analysis of variance with detail, but at a mathematical level that is simultaneously approachable. Throughout the book, statistical aspects of analysis complement practical as...

  1. Gamma Astrometric Measurement Experiment

    Science.gov (United States)

    Gai, M.; Lattanzi, M. G.; Ligori, S.; Loreggia, D.; Vecchiato, A.

    GAME aims at the measurement of gravitational deflection of the light by the Sun, by an optimised telescope on board a small class satellite. The targeted precision on the gamma parameter of the Parametrised Post-Newtonian formulation of General Relativity is below 10-6, i.e. one to two orders of magnitude better than the best current results. Such precision is suitable to detect possible deviations from the unity value, associated to generalised Einstein models for gravitation, with potentially huge impacts on the cosmological distribution of dark matter and dark energy. The measurement principle is based on differential astrometry. The observations also allow additional scientific objectives related to tests of General Relativity and to the study of exo-planetary systems. The instrument concept is based on a dual field, multiple aperture Fizeau interferometer, observing simultaneously two regions close to the Solar limb. The diluted optics achieves efficient rejection of the solar radiation, with good angular resolution on the science targets. We describe the science motivation, the proposed mission implementation and the expected performance.

  2. A measurement system analysis with design of experiments: Investigation of the adhesion performance of a pressure sensitive adhesive with the probe tack test.

    Science.gov (United States)

    Michaelis, Marc; Leopold, Claudia S

    2015-12-30

    The tack of a pressure sensitive adhesive (PSA) is not an inherent material property and strongly depends on the measurement conditions. Following the concept of a measurement system analysis (MSA), influencing factors of the probe tack test were investigated by a design of experiments (DoE) approach. A response surface design with 38 runs was built to evaluate the influence of detachment speed, dwell time, contact force, adhesive film thickness and API content on tack, determined as the maximum of the stress strain curve (σmax). It could be shown that all investigated factors have a significant effect on the response and that the DoE approach allowed to detect two-factorial interactions between the dwell time, the contact force, the adhesive film thickness and the API content. Surprisingly, it was found that tack increases with decreasing and not with increasing adhesive film thickness.

  3. A Transition Radiation Experiment to Measure the Electron Beam Modulation Induced by the Free Electron Laser: A Design Study.

    Science.gov (United States)

    1987-12-01

    a detector of the phototube, TV camera, or reticon type. The characteristics of TR that will apply to the proposed experiment are: (1) The angular...January- February 1987. 4. Colson, W.B., and A.M. Sessler, "Free Electron Lasers," Annual Review of Nuclear Particle Science, v. 35, pp. 25-54, 1985

  4. Design analysis for grounding experiments

    NARCIS (Netherlands)

    Lemmen, P.P.M.; Vredeveldt, A.W.; Pinkster, J.A.

    1996-01-01

    In 1995 a series of six grounding experiments has been carried out with a 600 Tonne inland water way tanker. At the how of the vessel test sections could be fitted, which were run into an artificial rock. The design of the support structures for the test sections and for the rock required the predic

  5. Experience-Centered Design Designers, Users, and Communities in Dialogue

    CERN Document Server

    Wright, Peter

    2010-01-01

    Experience-centered design, experience-based design, experience design, designing for experience, user experience design. All of these terms have emerged and gained acceptance in the Human-Computer Interaction (HCI) and Interaction Design relatively recently. In this book, we set out our understanding of experience-centered design as a humanistic approach to designing digital technologies and media that enhance lived experience. The book is divided into three sections. In Section 1, we outline the historical origins and basic concepts that led into and flow out from our understanding of experi

  6. Defining and Measuring User Experience

    DEFF Research Database (Denmark)

    Stage, Jan

    2006-01-01

    User experience is being used to denote what a user goes through while using a computerized system. The concept has gained momentum as a means to distinguish new types of applications such as games and entertainment software from more traditional work-related applications. This paper focuses...... on the intrinsic relation between definition and measurement. In the area of usability, this relation has been developed over several years. It is described how usability is defined and measured in contemporary approaches. Based on that, it is discussed to what extent we can employ experience from the conceptual...... definition of usability to develop the notion of user experience....

  7. Design of Multiphase Flow Experiments

    Energy Technology Data Exchange (ETDEWEB)

    Urkedal, Hege

    1998-12-31

    This thesis proposes an experimental design procedure for multiphase experiments. The two-phase functions can be determined using data from a single experiment, while the three-phase relative permeabilities must be determined using data from multiple experiments. Various three-phase experimental designs have been investigated and the accuracy with which the flow functions may be determined using the corresponding data have been computed. Analytical sensitivity coefficients were developed from two-phase to three-phase flow. Sensitivity coefficients are the derivative of the model output with respect to the model parameters. They are obtained by a direct method that takes advantage of the fact that the model equations are solved using the Newton-Raphson method, and some of the results from this solution can be used directly when solving the sensitivity equation. Numerical derivatives are avoided, which improves accuracy. The thesis uses an inverse methodology for determination of two- and three-phase relative permeability and capillary pressure functions. The main work has been the development of analytical sensitivity coefficients for two-and three-phase flow. This technical contribution has improved the accuracy both in parameter estimation and accuracy assessment of the estimates and reduced the computer time requirements. The proposed experimental design is also dependent on accurate sensitivity coefficients to give the right guidelines for how two- and three-phase experiments should be conducted. Following the proposed experimental design, three-phase relative permeability and capillary pressure functions have been estimated when multiple sets of experimental data have been reconciled by simulations. 74 refs., 69 figs., 18 tabs.

  8. Defining and Measuring User Experience

    DEFF Research Database (Denmark)

    Stage, Jan

    2006-01-01

    on the intrinsic relation between definition and measurement. In the area of usability, this relation has been developed over several years. It is described how usability is defined and measured in contemporary approaches. Based on that, it is discussed to what extent we can employ experience from the conceptual...

  9. Designing Effective Undergraduate Research Experiences

    Science.gov (United States)

    Severson, S.

    2010-12-01

    I present a model for designing student research internships that is informed by the best practices of the Center for Adaptive Optics (CfAO) Professional Development Program. The dual strands of the CfAO education program include: the preparation of early-career scientists and engineers in effective teaching; and changing the learning experiences of students (e.g., undergraduate interns) through inquiry-based "teaching laboratories." This paper will focus on the carry-over of these ideas into the design of laboratory research internships such as the CfAO Mainland internship program as well as NSF REU (Research Experiences for Undergraduates) and senior-thesis or "capstone" research programs. Key ideas in maximizing student learning outcomes and generating productive research during internships include: defining explicit content, scientific process, and attitudinal goals for the project; assessment of student prior knowledge and experience, then following up with formative assessment throughout the project; setting reasonable goals with timetables and addressing motivation; and giving students ownership of the research by implementing aspects of the inquiry process within the internship.

  10. Optimal design of isotope labeling experiments.

    Science.gov (United States)

    Yang, Hong; Mandy, Dominic E; Libourel, Igor G L

    2014-01-01

    Stable isotope labeling experiments (ILE) constitute a powerful methodology for estimating metabolic fluxes. An optimal label design for such an experiment is necessary to maximize the precision with which fluxes can be determined. But often, precision gained in the determination of one flux comes at the expense of the precision of other fluxes, and an appropriate label design therefore foremost depends on the question the investigator wants to address. One could liken ILE to shadows that metabolism casts on products. Optimal label design is the placement of the lamp; creating clear shadows for some parts of metabolism and obscuring others.An optimal isotope label design is influenced by: (1) the network structure; (2) the true flux values; (3) the available label measurements; and, (4) commercially available substrates. The first two aspects are dictated by nature and constrain any optimal design. The second two aspects are suitable design parameters. To create an optimal label design, an explicit optimization criterion needs to be formulated. This usually is a property of the flux covariance matrix, which can be augmented by weighting label substrate cost. An optimal design is found by using such a criterion as an objective function for an optimizer. This chapter uses a simple elementary metabolite units (EMU) representation of the TCA cycle to illustrate the process of experimental design of isotope labeled substrates.

  11. GIFTS EDU Ground-based Measurement Experiment

    Science.gov (United States)

    Zhou, Daniel K.; Smith, W. L., Sr.; Zollinger, L. J.; Huppi, R. J.; Reisse, R. A.; Larar, A. M.; Liu, X.; Tansock, J. J., Jr.; Jensen, S. M.; Revercomb, H. E.; Feltz, W. F.; Bingham, G. E.

    2007-01-01

    Geosynchronous Imaging Fourier Transform Spectrometer (GIFTS) Engineering Demonstration Unit (EDU) is an imaging infrared spectrometer designed for atmospheric soundings. The EDU groundbased measurement experiment was held in Logan, Utah during September 2006 to demonstrate its extensive capabilities for geosynchronous and other applications.

  12. Remote Experiments in Resistor Measurement

    Directory of Open Access Journals (Sweden)

    Popescu Viorel

    2009-10-01

    Full Text Available The paper describes blended learningapproach to teaching resistor measurement. It is basedon “Learning by Doing” paradigm: interacticesimulation, laboratory plants, real experimentsaccessed by Web Publishing Tools under LabVIEW.Studying and experimenting access is opened for 24hours a day, 7 days a week under Moodle bookingsystem.

  13. Design of satellite flexibility experiments

    Science.gov (United States)

    Kaplan, M. H.; Hillard, S. E.

    1977-01-01

    A preliminary study has been completed to begin development of a flight experiment to measure spacecraft control/flexible structure interaction. The work reported consists of two phases: identification of appropriate structural parameters which can be associated with flexibility phenomena, and suggestions for the development of an experiment for a satellite configuration typical of near-future vehicles which are sensitive to such effects. Recommendations are made with respect to the type of data to be collected and instrumentation associated with these data. The approach consists of developing the equations of motion for a vehicle possessing a flexible solar array, then linearizing about some nominal motion of the craft. A set of solutions are assumed for array deflection using a continuous normal mode method and important parameters are exposed. Inflight and ground based measurements are distinguished. Interrelationships between these parameters, measurement techniques, and input requirements are discussed which assure minimization of special vehicle maneuvers and optimization of data to be obtained during the normal flight sequence.

  14. Social Design Experiments: Toward Equity by Design

    Science.gov (United States)

    Gutiérrez, Kris D.; Jurow, A. Susan

    2016-01-01

    In this article, we advance an approach to design research that is organized around a commitment to transforming the educational and social circumstances of members of non-dominant communities as a means of promoting social equity and learning. We refer to this approach as social design experimentation. The goals of social design experiments…

  15. CMM Interim Check Design of Experiments (U)

    Energy Technology Data Exchange (ETDEWEB)

    Montano, Joshua Daniel [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-07-29

    Coordinate Measuring Machines (CMM) are widely used in industry, throughout the Nuclear Weapons Complex and at Los Alamos National Laboratory (LANL) to verify part conformance to design definition. Calibration cycles for CMMs at LANL are predominantly one year in length and include a weekly interim check to reduce risk. The CMM interim check makes use of Renishaw’s Machine Checking Gauge which is an off-the-shelf product simulates a large sphere within a CMM’s measurement volume and allows for error estimation. As verification on the interim check process a design of experiments investigation was proposed to test a couple of key factors (location and inspector). The results from the two-factor factorial experiment proved that location influenced results more than the inspector or interaction.

  16. Design calculations for NIF convergent ablator experiments

    Directory of Open Access Journals (Sweden)

    Olson R.E.

    2013-11-01

    Full Text Available The NIF convergent ablation tuning effort is underway. In the early experiments, we have discovered that the design code simulations over-predict the capsule implosion velocity and shock flash ρr, but under-predict the hohlraum x-ray flux measurements. The apparent inconsistency between the x-ray flux and radiography data implies that there are important unexplained aspects of the hohlraum and/or capsule behavior.

  17. Design calculations for NIF convergent ablator experiments

    OpenAIRE

    Olson R.E.; Hicks D.G.; Meezan N.B.; Callahan D.A.; Landen O.L.; Jones O.S.; Langer S.H.; Kline J.L.; Wilson D.C.; Rinderknecht H.; Zylstra A.; Petrasso R.D.

    2013-01-01

    The NIF convergent ablation tuning effort is underway. In the early experiments, we have discovered that the design code simulations over-predict the capsule implosion velocity and shock flash ρr, but under-predict the hohlraum x-ray flux measurements. The apparent inconsistency between the x-ray flux and radiography data implies that there are important unexplained aspects of the hohlraum and/or capsule behavior.

  18. Advanced ISDN satellite designs and experiments

    Science.gov (United States)

    Pepin, Gerard R.

    1992-01-01

    The research performed by GTE Government Systems and the University of Colorado in support of the NASA Satellite Communications Applications Research (SCAR) Program is summarized. Two levels of research were undertaken. The first dealt with providing interim services Integrated Services Digital Network (ISDN) satellite (ISIS) capabilities that accented basic rate ISDN with a ground control similar to that of the Advanced Communications Technology Satellite (ACTS). The ISIS Network Model development represents satellite systems like the ACTS orbiting switch. The ultimate aim is to move these ACTS ground control functions on-board the next generation of ISDN communications satellite to provide full-service ISDN satellite (FSIS) capabilities. The technical and operational parameters for the advanced ISDN communications satellite design are obtainable from the simulation of ISIS and FSIS engineering software models of the major subsystems of the ISDN communications satellite architecture. Discrete event simulation experiments would generate data for analysis against NASA SCAR performance measure and the data obtained from the ISDN satellite terminal adapter hardware (ISTA) experiments, also developed in the program. The Basic and Option 1 phases of the program are also described and include the following: literature search, traffic mode, network model, scenario specifications, performance measures definitions, hardware experiment design, hardware experiment development, simulator design, and simulator development.

  19. Designs and development of fuel spay measurement system for experiments%实验用燃油喷雾检测系统的设计与开发

    Institute of Scientific and Technical Information of China (English)

    马宗正; 徐平; 杨安杰; 刘豫喜

    2016-01-01

    Aiming at the high price for the fuel spray measurement system in the laboratory which is harmful to the practical teaching,one fuel spray measurement system for the experiment is designed and developed.This system is based on light scattering principle and it consists of 8 bit single-chip processor,common opt coupler chip and field-effect tube driven chip.Then the control system is designed based on the hardware,and it can realize the inj ection,CCD camera and strobe light automatic control.Meanwhile,the image processing software is completed based on Matlab platform.It is proved by the experiment that the fuel spray process image can be achieved and the spray also can be processed quantitatively based on the image.So it is helpful to improve the understanding of the theoretical knowledge.%针对目前实验室能用于测量燃油喷雾的检测系统,不利于实践教学的问题,开发了一款实验用燃油喷雾检测系统。该系统基于散射法原理,以8位单片机为处理器、普通光耦芯片和场效应管为驱动芯片,完成了控制系统的开发,实现了对于喷油、CCD相机和频闪光源的控制,同时基于 Matlab 软件完成了图像处理程序的开发。经过测试验证,该系统可以实现喷雾过程的图像采集,同时还可以对喷雾过程进行定量处理。该系统对于提高学生对于理论知识的掌握有着积极作用。

  20. Design and analysis of experiments with SAS

    CERN Document Server

    Lawson, John

    2010-01-01

    IntroductionStatistics and Data Collection Beginnings of Statistically Planned Experiments Definitions and Preliminaries Purposes of Experimental Design Types of Experimental Designs Planning Experiments Performing the Experiments Use of SAS SoftwareCompletely Randomized Designs with One Factor Introduction Replication and Randomization A Historical Example Linear Model for Completely Randomized Design (CRD) Verifying Assumptions of the Linear Model Analysis Strategies When Assumptions Are Violated Determining the Number of Replicates Comparison of Treatments after the F-TestFactorial Designs

  1. Introducing Experience Goals into Packaging Design

    OpenAIRE

    Joutsela, Markus; Roto, Virpi; Lloyd, Peter; Bohemia, Erik

    2016-01-01

    Consumer experiences are an increasingly important driving force for commerce, affecting also packaging design. Yet, experience design for packages is rarely studied. Specifically, there is a gap in research regarding the integration of experiential goals, Xgoals, into the packaging design process. Open questions include how to describe Xgoals in design briefs when package design is outsourced, how to deal with changes during the design process, and how to evaluate whether the delivered desig...

  2. Adaptive designs for sequential experiments

    Institute of Scientific and Technical Information of China (English)

    林正炎; 张立新

    2003-01-01

    Various adaptive designs have been proposed and applied to clinical trials, bioassay, psychophysics, etc.Adaptive designs are also useful in high cost engineering trials.More and more people have been paying attention to these design methods. This paper introduces several broad families of designs, such as the play-the-winner rule, randomized play-the-winner rule and its generalization to the multi-arm case, doubly biased coin adaptive design, Markov chain model.

  3. Design Studies for Flux and Polarization Measurements of Photons and Positrons for SLAC Proposal E166: An experiment to test polarized positron production in the FFTB (LCC-0107)

    Energy Technology Data Exchange (ETDEWEB)

    Woods, M

    2003-10-02

    We present results from design studies carried out to investigate measurements of the flux, spectrum and polarization of undulator photons for SLAC Proposal E166. A transmission Compton polarimeter is considered for measuring the photon circular polarization. We also present results for measuring the flux and spectrum of positrons produced by the undulator photons in an 0.5X{sub 0} Titanium target. And we present some considerations for use of a transmission Compton polarimeter to measure the circular polarization of bremsstrahlung photons emitted by the polarized positrons in a thin radiator.

  4. LOCATORS OPTIMIZATION FOR MEASURING FIXTURE DESIGN

    Institute of Scientific and Technical Information of China (English)

    Wang Jian; Zhou Jiangqi; Lin Zhongqin

    2004-01-01

    "N-2-1" principle is widely recognized in the fixture design for deformable sheet metal workpieces, where N, the locators on primary datum, is the key to sheet metal fixture design. However, little research is done on how to determine the positions and the number of N locators. In practice, the N locators are frequently designed from experience, which is often unsatisfactory for achieving the precision requirement in fixture design. A new method to lay out the N locators for measuring fixture of deformable sheet metal workpiece is presented, given the fixed number of N. Finite-element method is used to model and analysis the deformation of different locator layouts. A knowledge based genetic algorithm (KBGA) is applied to identify the optimum locator layout for measuring fixture design. An example of a door outer is used to verify the optimization approach.

  5. Gravitation Astrometric Measurement Experiment (GAME)

    Science.gov (United States)

    Gai, M.; Vecchiato, A.; Ligori, S.; Riva, A.; Lattanzi, M. G.; Busonero, D.; Fienga, A.; Loreggia, D.; Crosta, M. T.

    2012-07-01

    GAME is a recent concept for a small/medium class mission aimed at Fundamental Physics tests in the Solar system, by means of an optimised instrument in the visible, based on smart combination of coronagraphy and Fizeau interferometry. The targeted precision on the γ and β parameters of the Parametrised Post-Newtonian formulation of General Relativity are respectively in the 10-7-10-8 and 10-5-10-6 range, improving by one or two orders of magnitude with respect to the expectations on current or near future experiments. Such precision is suitable to detect possible deviations from the unity value, associated to generalised Einstein models for gravitation, with potentially huge impacts on the cosmological distribution of dark matter and dark energy from a Solar system scale experiment. The measurement principle is based on the differential astrometric signature on the stellar positions, i.e. based on the spatial component of the effect rather than the temporal component as in the most recent experiments using radio link delay timing variation (Cassini). The instrument concept is based on multiple field, multiple aperture Fizeau interferometry, observing simultaneously regions close to the Solar limb (requiring the adoption of coronagraphic techniques), and others in opposition to the Sun. The diluted optics approach is selected for achieving an efficient rejection of the scattered solar radiation, while retaining an acceptable angular resolution on the science targets. The multiple field observation is aimed at cost-effective control of systematic effects through simultaneous calibration. We describe the science motivation, the proposed mission profile, the instrument concept and the expected performance.

  6. Adaptive designs for sequential experiments

    Institute of Scientific and Technical Information of China (English)

    林正炎; 张立新

    2003-01-01

    Various adaptive designe have been proposed and applied to clinical trials,bioassay,psycho-physics,etc.Adaptive designs are also useful in high cost engineering trials.More and More people have been paying attention to these desing methods.This paper introduces several broad families of designs,such as the play-the-winner rele,randomized play-the-winner rule and its generalization to the multi-arm case,doubly bi-ased coin adaptive design,Markov chain model.

  7. GAME: Gamma Astrometric Measurement Experiment

    Science.gov (United States)

    Gai, Mario; Lattanzi, Mario G.; Ligori, Sebastiano; Vecchiato, Alberto

    2008-07-01

    The GAME mission concept aims at the very precise measurement of the gravitational deflection of light by the Sun, by means of an optimised telescope operating in the visible and launched in orbit on a small class satellite. The targeted precision on the γ parameter of the Parametrised Post-Newtonian formulation of General Relativity is 10-6 or better, i.e. one to two orders of magnitude better than the best currently available results. Such precision is suitable to detect possible deviations from the unity value, associated to generalised Einstein models for gravitation, with potentially huge impacts on the cosmological distribution of dark matter and dark energy. The measurement principle is based on the differential astrometric signature on the stellar positions, i.e., based on the spatial component of the effect rather than the temporal component as in the most recent experiments using radio link delay timing. The observation strategy also allows some additional scientific objectives related to other tests of General Relativity and to the study of exo-planetary field, multiple aperture Fizeau interferometer, observing simultaneously two regions close to the Solar limb. The diluted optics approach is selected for achieving an efficient rejection of the scattered solar radiation, while retaining an acceptable angular resolution on the science targets. We describe the science motivation, the proposed mission profile, the possible payload implementation and the expected performance.

  8. On balanced minimal repeated measurements designs

    Directory of Open Access Journals (Sweden)

    Shakeel Ahmad Mir

    2014-10-01

    Full Text Available Repeated Measurements designs are concerned with scientific experiments in which each experimental unit is assigned more than once to a treatment either different or identical. This class of designs has the property that the unbiased estimators for elementary contrasts among direct and residual effects are obtainable. Afsarinejad (1983 provided a method of constructing balanced Minimal Repeated Measurements designs p < t , when t is an odd or prime power, one or more than one treatment may occur more than once in some sequences and  designs so constructed no longer remain uniform in periods. In this paper an attempt has been made to provide a new method to overcome this drawback. Specifically, two cases have been considered                RM[t,n=t(t-t/(p-1,p], λ2=1 for balanced minimal repeated measurements designs and  RM[t,n=2t(t-t/(p-1,p], λ2=2 for balanced  repeated measurements designs. In addition , a method has been provided for constructing              extra-balanced minimal designs for special case RM[t,n=t2/(p-1,p], λ2=1.

  9. Experimenting with Science Facility Design.

    Science.gov (United States)

    Butterfield, Eric

    1999-01-01

    Discusses the modern school science facility and how computers and teaching methods are changing their design. Issues include power, lighting, and space requirements; funding for planning; architect assessment; materials requirements for work surfaces; and classroom flexibility. (GR)

  10. Experiment Design and Analysis Guide - Neutronics & Physics

    Energy Technology Data Exchange (ETDEWEB)

    Misti A Lillo

    2014-06-01

    The purpose of this guide is to provide a consistent, standardized approach to performing neutronics/physics analysis for experiments inserted into the Advanced Test Reactor (ATR). This document provides neutronics/physics analysis guidance to support experiment design and analysis needs for experiments irradiated in the ATR. This guide addresses neutronics/physics analysis in support of experiment design, experiment safety, and experiment program objectives and goals. The intent of this guide is to provide a standardized approach for performing typical neutronics/physics analyses. Deviation from this guide is allowed provided that neutronics/physics analysis details are properly documented in an analysis report.

  11. Thermal Characterization of Functionally Graded Materials: Design of Optimum Experiments

    Science.gov (United States)

    Cole, Kevin D.

    2003-01-01

    This paper is a study of optimal experiment design applied to the measure of thermal properties in functionally graded materials. As a first step, a material with linearly-varying thermal properties is analyzed, and several different tran- sient experimental designs are discussed. An optimality criterion, based on sen- sitivity coefficients, is used to identify the best experimental design. Simulated experimental results are analyzed to verify that the identified best experiment design has the smallest errors in the estimated parameters. This procedure is general and can be applied to design of experiments for a variety of materials.

  12. Involving Motion Graphics in Spatial Experience Design

    DEFF Research Database (Denmark)

    Steijn, Arthur

    2013-01-01

    process, and therefore it should be constructed as such. Since the development of the design model has this double focus, I involve design students in design laboratories related to my practice as a teacher in visual communication design and production design. I also reflect on how an initial design...... conceptualization of various design elements in an analysis of the way in which these elements are integrated and used in the creation of particular experiences of space, atmosphere and artistic expression. On the basis of this analysis I present a preliminary construction of a design model including some design...... laboratory may be set-up and used. Finally I describe how this design lab can be used as a method for creating both practical knowledge of the manner in which the design model may be applied in actual design processes, as well as how these processes can be used for pointing out design elements or dimensions...

  13. Design of experiments in production engineering

    CERN Document Server

    2016-01-01

    This book covers design of experiments (DoE) applied in production engineering as a combination of manufacturing technology with applied management science. It presents recent research advances and applications of design experiments in production engineering and the chapters cover metal cutting tools, soft computing for modelling and optmization of machining, waterjet machining of high performance ceramics, among others.

  14. Optimal Design of Experiments Subject to Correlated Errors

    OpenAIRE

    Pazman, Andrej; Müller, Werner

    2000-01-01

    In this paper we consider optimal design of experiments in the case of correlated observations, when no replications are possible. This situation is typical when observing a random process or random field with known covariance structure. We present a theorem which demonstrates that the computation of optimum exact designs corresponds to solving minimization problems in terms of design measures. (author's abstract)

  15. Smashing UX design foundations for designing online user experiences

    CERN Document Server

    Allen, Jesmond

    2012-01-01

    The ultimate guide to UX from the world's most popular resource for web designers and developers Smashing Magazine is the world's most popular resource for web designers and developers and with this book, the authors provide the pinnacle resource to becoming savvy with User Experience Design (UX). The authors first provide an overview of UX and chart its rise to becoming a valuable and necessary practice for narrowing the gap between Web sites, applications, and users in order to make a user's experience a happy, easy, and successful one.Examines the essential aspects of User Experience Design

  16. Quantifying the Qualitative: Measuring the Insight Experience

    Science.gov (United States)

    Jarman, Matthew S.

    2014-01-01

    No scales currently exist that measure variability in the insight experience. Two scales were created to measure two factors hypothesized to be key drivers of the insight experience: insight radicality (i.e., perceived deviation between previous and new problem representations) and restructuring experience (i.e., the subjective experience of the…

  17. Information measures in nonlinear experimental design

    Science.gov (United States)

    Niple, E.; Shaw, J. H.

    1980-01-01

    Some different approaches to the problem of designing experiments which estimate the parameters of nonlinear models are discussed. The assumption in these approaches that the information in a set of data can be represented by a scalar is criticized, and the nonscalar discrimination information is proposed as the proper measure to use. The two-step decay example in Box and Lucas (1959) is used to illustrate the main points of the discussion.

  18. Design and analysis of experiments

    CERN Document Server

    Hinkelmann, Klaus

    This book discusses special modifications and extensions of designs that arise in certain fields of application such as genetics, bioinformatics, agriculture, medicine, manufacturing, marketing, etc. Well-known and highly-regarded contributors have written individual chapters that have been extensively reviewed by the Editor to ensure that each individual contribution relates to material found in Volumes 1 and 2 of this book series. The chapters in Volume 3 have an introductory/historical component and proceed to a more advanced technical level to discuss the latest results and future developm

  19. DC Magnetics Measurement System Design

    Science.gov (United States)

    Mastny, Timothy

    2012-01-01

    This report will detail the updates to the magnetics measurement system design and testing procedures that are required for performing static (DC) magnetics testing of future flight hardware. An older magnetics testing system had to be integrated with new procedures and hardware to meet the demands of future testing programs and accommodate an upcoming magnetics tests. The next test will be for the Geostationary Operational Environmental Satellite R-Series (GOES-R), which will verify that the SAFT Battery component meets its specifications for magnetic cleanliness. The satellite is scheduled to launch in 2015 with magnetics testing to be completed on the battery in November 2012.

  20. Democratic design experiments: between parliament and laboratory

    DEFF Research Database (Denmark)

    Binder, Thomas; Brandt, Eva; Ehn, Pelle;

    2015-01-01

    been performed and accomplished in participatory practices. In this article we discuss how participatory design may be reinvigorated as a design research programme for democratic design experiments in the light of the de-centring of human-centredness and the foregrounding of collaborative......For more than four decades participatory design has provided exemplars and concepts for understanding the democratic potential of design participation. Despite important impacts on design methodology participatory design has however been stuck in a marginal position as it has wrestled with what has...

  1. Eye tracking in user experience design

    CERN Document Server

    Romano Bergstorm, Jennifer

    2014-01-01

    Eye Tracking for User Experience Design explores the many applications of eye tracking to better understand how users view and interact with technology. Ten leading experts in eye tracking discuss how they have taken advantage of this new technology to understand, design, and evaluate user experience. Real-world stories are included from these experts who have used eye tracking during the design and development of products ranging from information websites to immersive games. They also explore recent advances in the technology which tracks how users interact with mobile devices, large-screen displays and video game consoles. Methods for combining eye tracking with other research techniques for a more holistic understanding of the user experience are discussed. This is an invaluable resource to those who want to learn how eye tracking can be used to better understand and design for their users. * Includes highly relevant examples and information for those who perform user research and design interactive experi...

  2. The Ethics of User Experience Design

    DEFF Research Database (Denmark)

    Vistisen, Peter; Jensen, Thessa

    actions to experience the system, and thus deal with the problem. The way these actions are related to the way the user is viewed by the designer, will in this article be discussed with the term empathy as its fulcrum. Empathy has been heralded as the primary skill for the user-centered designer to ensure......-centered design process. Exemplifying the differences and ethical implications for the designer in the interaction with the user through the design of interactive digital systems. Finally the article discusses the need to understand design as a development of empathy for a given user or group of users by giving...... a cased-based overview of how empathy can be achieved during the design process, and become the catalyst of a more ethical approach to designing the user experience of ICT....

  3. The Ethics of User Experience Design

    DEFF Research Database (Denmark)

    Vistisen, Peter; Jensen, Thessa

    2013-01-01

    actions to experience the system, and thus deal with the problem. The way these actions are related to the way the user is viewed by the designer, will in this article be discussed with the term empathy as its fulcrum. Empathy has been heralded as the primary skill for the user-centered designer to ensure......-centered design process. Exemplifying the differences and ethical implications for the designer in the interaction with the user through the design of interactive digital systems. Finally the article discusses the need to understand design as a development of empathy for a given user or group of users by giving...... a cased-based overview of how empathy can be achieved during the design process, and become the catalyst of a more ethical approach to designing the user experience of ICT....

  4. Measuring Experiences of Interest-Related Pursuits in Connected Learning

    Science.gov (United States)

    Maul, Andrew; Penuel, William R.; Dadey, Nathan; Gallagher, Lawrence P.; Podkul, Timothy; Price, Emily

    2017-01-01

    This paper describes an effort to develop a survey instrument capable of measuring important aspects of adolescents' experiences of interest-related pursuits that are supported by technology. The measure focuses on youths' experiences of "connected learning" (Ito et al. in Connected learning: an agenda for research and design. Digital…

  5. Design for experience where technology meets design and strategy

    CERN Document Server

    Kim, Jinwoo

    2015-01-01

    Presents a strategic perspective and design methodology that guide the process of developing digital products and services that provide 'real experience' to users. Only when the material experienced runs its course to fulfilment is it then regarded as 'real experience' that is distinctively senseful, evaluated as valuable, and harmoniously related to others. Based on the theoretical background of human experience, the book focuses on these three questions: How can we understand the current dominant designs of digital products and services? What are the user experience factor

  6. Measuring user experience : what's new?

    NARCIS (Netherlands)

    Cremers, A.H.M.; Smets, N.; Vermeeren, A.; Kort, J.

    2007-01-01

    This paper proposes a short overview of characteristics of different user evaluation methods and a research framework to systematically compare these different methods. Comparisons will be carried out in the context of Freeband user experience studies. Results will provide more insight into how user

  7. Measuring user experience : what's new?

    NARCIS (Netherlands)

    Cremers, A.H.M.; Smets, N.; Vermeeren, A.; Kort, J.

    2007-01-01

    This paper proposes a short overview of characteristics of different user evaluation methods and a research framework to systematically compare these different methods. Comparisons will be carried out in the context of Freeband user experience studies. Results will provide more insight into how user

  8. An Intelligent Design on the Experiment of Measuring Young’ s Module by Stretching%拉伸法测金属杨氏模量实验的智能化设计

    Institute of Scientific and Technical Information of China (English)

    战丽波

    2015-01-01

    We give intelligent designs on the experiment of measuring young’ s module by stretching,especially for medical students. The intelligent designs simplify the measuring process,so the experiment is more visual and convenience than the conventional experiment. The automation and real-time transformation are achieved and the effect due to the artificial factors in the measurement is eliminated. Then the degree of precision is in-creased greatly. The intelligent designs can effectively solve the difficulties in the traditional experiment and meet the learning needs of medical students.%针对医学院学生的特点,对传统的杨氏模量测量仪进行智能化的设计改进。该智能化设计能够有效解决传统的杨氏模量测定实验存在的调试难点,满足医学院学生的学习需求。

  9. Transformers: analysis, design, and measurement

    National Research Council Canada - National Science Library

    López-Fernández, Xose M; Ertan, H. Bülent; Turowski, J

    2013-01-01

    "This book focuses on contemporary economic, design, diagnostics, and maintenance aspects of power, instrument, and high frequency transformers, which are critical to designers for a transformer stations...

  10. Design -|+ Negative emotions for positive experiences

    NARCIS (Netherlands)

    Fokkinga, S.F.

    2015-01-01

    Experience-driven design considers all aspects of a product – its appearance, cultural meaning, functionality, interaction, usability, technology, and indirect consequences of use – with the aim to optimize and orchestrate all these aspects and create the best possible user experience. Since the lat

  11. Cooperative adaptive cruise control: design and experiments

    NARCIS (Netherlands)

    Naus, G.; Vugts, R.; Ploeg, J.; Molengraft, R. van de; Steinbuch, M.

    2010-01-01

    The design of a CACC system and corresponding experiments are presented. The design targets string stable system behavior, which is assessed using a frequency-domain-based approach. Following this approach, it is shown that the available wireless information enables small inter-vehicle distances, wh

  12. Optimized Experiment Design for Marine Systems Identification

    DEFF Research Database (Denmark)

    Blanke, M.; Knudsen, Morten

    1999-01-01

    Simulation of maneuvring and design of motion controls for marine systems require non-linear mathematical models, which often have more than one-hundred parameters. Model identification is hence an extremely difficult task. This paper discusses experiment design for marine systems identification...

  13. Resourcing of Experience in Co-Design

    DEFF Research Database (Denmark)

    Ylirisku, Salu; Revsbæk, Line; Buur, Jacob

    2017-01-01

    , knowledge to benefit its cultivation is expected to be highly valuable in contemporary multi-cultural design work. This paper approaches the study of the involvement of various stakeholders in design projects through a lens of resourcing experience. Building from G. H. Mead’s pragmatist theory, we devise...

  14. Adaptive Design of Visual Perception Experiments

    Science.gov (United States)

    2010-04-01

    the same treatment type, and the image stimuli within the cells are presented in random order. 2c. Calibrated perception laboratory The...Adaptive design of visual perception experiments John D. O’Connor, Jonathon Hixson US ARMY RDECOM CERDEC NVESD Ft. Belvoir, VA 22060...ABSTRACT Meticulous experimental design may not always prevent confounds from affecting experimental data acquired during visual perception

  15. Cooperative adaptive cruise control: design and experiments

    NARCIS (Netherlands)

    Naus, G.; Vugts, R.; Ploeg, J.; Molengraft, R. van de; Steinbuch, M.

    2010-01-01

    The design of a CACC system and corresponding experiments are presented. The design targets string stable system behavior, which is assessed using a frequency-domain-based approach. Following this approach, it is shown that the available wireless information enables small inter-vehicle distances, wh

  16. Optimal experiment design for identification of grey-box models

    DEFF Research Database (Denmark)

    Sadegh, Payman; Melgaard, Henrik; Madsen, Henrik

    1994-01-01

    Optimal experiment design is investigated for stochastic dynamic systems where the prior partial information about the system is given as a probability distribution function in the system parameters. The concept of information is related to entropy reduction in the system through Lindley's measure...... estimation results in a considerable reduction of the experimental length. Besides, it is established that the physical knowledge of the system enables us to design experiments, with the goal of maximizing information about the physical parameters of interest....

  17. Transformers analysis, design, and measurement

    CERN Document Server

    Lopez-Fernandez, Xose M; Turowski, Janusz

    2012-01-01

    This book focuses on contemporary economic, design, diagnostics, and maintenance aspects of power, instrument, and high frequency transformers, which are critical to designers for a transformer stations. The text covers such topics as shell type and superconducting transformers as well as coreless PCB and planar transformers. It emphasizes challenges and strategies in transformer design and illustrates the importance of economics in transformers management by reviewing life cycle cost design and the use of decision methods to manage risk.

  18. Tractable Experiment Design via Mathematical Surrogates

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Brian J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-02-29

    This presentation summarizes the development and implementation of quantitative design criteria motivated by targeted inference objectives for identifying new, potentially expensive computational or physical experiments. The first application is concerned with estimating features of quantities of interest arising from complex computational models, such as quantiles or failure probabilities. A sequential strategy is proposed for iterative refinement of the importance distributions used to efficiently sample the uncertain inputs to the computational model. In the second application, effective use of mathematical surrogates is investigated to help alleviate the analytical and numerical intractability often associated with Bayesian experiment design. This approach allows for the incorporation of prior information into the design process without the need for gross simplification of the design criterion. Illustrative examples of both design problems will be presented as an argument for the relevance of these research problems.

  19. Adaptive design of visual perception experiments

    Science.gov (United States)

    O'Connor, John D.; Hixson, Jonathan; Thomas, James M., Jr.; Peterson, Matthew S.; Parasuraman, Raja

    2010-04-01

    Meticulous experimental design may not always prevent confounds from affecting experimental data acquired during visual perception experiments. Although experimental controls reduce the potential effects of foreseen sources of interference, interaction, or noise, they are not always adequate for preventing the confounding effects of unforeseen forces. Visual perception experimentation is vulnerable to unforeseen confounds because of the nature of the associated cognitive processes involved in the decision task. Some confounds are beyond the control of experimentation, such as what a participant does immediately prior to experimental participation, or the participant's attitude or emotional state. Other confounds may occur through ignorance of practical control methods on the part of the experiment's designer. The authors conducted experiments related to experimental fatigue and initially achieved significant results that were, upon re-examination, attributable to a lack of adequate controls. Re-examination of the original results and the processes and events that led to them yielded a second experimental design with more experimental controls and significantly different results. The authors propose that designers of visual perception experiments can benefit from planning to use a test-fix-test or adaptive experimental design cycle, so that unforeseen confounds in the initial design can be remedied.

  20. Gamma astrometric measurement experiment -science and implementation

    Science.gov (United States)

    Gai, Mario; Vecchiato, Alberto; Lattanzi, Mario G.; Ligori, Sebastiano; Loreggia, Davide; Fineschi, Silvano

    GAME (Gamma Astrometric Measurement Experiment) is a mission concept taking advantage of astronomical techniques for high precision measurements of interest to Fundamental Physics, and in particular the γ parameter of the Parameterized Post-Newtonian formulation of gravi-tation theories modifying the General Relativity. A space based telescope, looking close to the Solar limb thanks to coronagraphic techniques, may implement astrometric measurements sim-ilar to those performed in the solar eclipse of 1919, when Dyson, Eddington and collaborators measured for the first time the gravitational bending of light. Simulations show that the final accuracy of GAME can reach the 10-7 level. GAME will be a decisive experiment for the understanding of gravity physics, cosmology and the Universe evolution. The observations leading to Dark Matter (e.g. galaxy rotation curves) and Dark Energy (accelerated expansion of the Universe) might be explained with a modified version of General Relativity, e.g. in which the curvature invariant R is no longer constant as in Einstein's equations, i.e. the f (R) gravity theories. A 10-7 level determination of γ will provide stringent constraints on acceptable theories. Also, high precision astrometry makes accessible other appealing measurements, e.g. the light deflection induced by the quadrupole moment of giant planets, like Jupiter or Saturn, and, by high precision determination of the orbits of Mercury and high elongation asteroids, the PPN parameter β. GAME may also carry out measurements on selected astrophysical targets, e.g. nearby, bright stars known to host companions with minimum masses in the planetary/brown dwarf regime, and orbital radii in the 3-7 AU range, which are observed by no other present or planned campaigns. GAME, also thanks to high-cadence, high-precision photometry on transit-ing exoplanet systems, will thus improve on our understanding of the actual mass distribution and multiplicity of sub-stellar companions

  1. Designing (for) experiences in photorealistic VR environments

    Science.gov (United States)

    Carroll, Fiona

    2010-04-01

    This paper investigates the role of aesthetics in the design of "intended" experiences in photorealistic virtual reality (VR) environments. It is motivated by the very notion that the aesthetic potential of photorealistic VR content is, and continues to be, underestimated whilst the emphasis on the development of newer and more efficient visualisation technologies to create new and exciting VR experiences increases. Challenging this, the paper looks beyond the technological (and the more traditional human computer interaction approaches that have primarily focused on the performance and efficiency issues of the technology) in order to explore more human values and the experiential side of VR. It focuses on the design of an "engaged interaction" and in doing so, implements a comparative study to explore how the strategic patterning of the aesthetic elements (particularly colour) within a photorealistic VR environment can allow for the design of a certain experience. In conclusion, the paper demonstrates that aesthetics and the "engaged interaction" can play an important role in getting to the heart of the photorealistic VR "user" experience. It highlights how we might design for (i.e. suggest, coax and guide) an "intended" VR experience.

  2. Design Experiments and the Generation of Theory

    DEFF Research Database (Denmark)

    Nortvig, Anne-Mette

    2014-01-01

    When blended learning is introduced in professional education with strong traditions of physical activities and face-to-face interactions in the classroom, creation of new learning designs is needed both in the classroom and online. While some educators see the implementation of e......-learning and blended learning as an opportunity to innovate and implement design experiments, others try to defend their teaching against changes and the intrusion of technology in the classroom (Hanson, 2009; Könings, Brand-Gruwel, & van Merriënboer, 2007).In this PhD project, an overall Design-based Research...

  3. Uniform design of experiments with mixtures

    Institute of Scientific and Technical Information of China (English)

    王元; 方开泰

    1996-01-01

    Consider a design of experiments with mixtures:0≤ai

  4. Design and Analysis of Simulation Experiments

    NARCIS (Netherlands)

    Kleijnen, Jack P.C.

    2015-01-01

    This is a new edition of Kleijnen’s advanced expository book on statistical methods for the Design and Analysis of Simulation Experiments (DASE). Altogether, this new edition has approximately 50% new material not in the original book. More specifically, the author has made significant changes to

  5. Expressions: Embodiment in the experience of design

    NARCIS (Netherlands)

    Van Rompay, T.J.L.

    2005-01-01

    EXPRESSIONS: EMBODIMENT IN THE EXPERIENCE OF DESIGN Products are not just objects by means of which we get things done. Apart from bringing aesthetic pleasures, for instance, they may also embody values we hold dear, communicate our fine taste to others, and help us define who we are. These widely

  6. Measuring the user experience collecting, analyzing, and presenting usability metrics

    CERN Document Server

    Tullis, Thomas

    2013-01-01

    Measuring the User Experience was the first book that focused on how to quantify the user experience. Now in the second edition, the authors include new material on how recent technologies have made it easier and more effective to collect a broader range of data about the user experience. As more UX and web professionals need to justify their design decisions with solid, reliable data, Measuring the User Experience provides the quantitative analysis training that these professionals need. The second edition presents new metrics such as emotional engagement, personas, k

  7. Designing a Hybrid Laminar-Flow Control Experiment: The CFD-Experiment Connection

    Science.gov (United States)

    Streett, C. L.

    2003-01-01

    The NASA/Boeing hybrid laminar flow control (HLFC) experiment, designed during 1993-1994 and conducted in the NASA LaRC 8-foot Transonic Pressure Tunnel in 1995, utilized computational fluid dynamics and numerical simulation of complex fluid mechanics to an unprecedented extent for the design of the test article and measurement equipment. CFD was used in: the design of the test wing, which was carried from definition of desired disturbance growth characteristics, through to the final airfoil shape that would produce those growth characteristics; the design of the suction-surface perforation pattern that produced enhanced crossflow-disturbance growth: and in the design of the hot-wire traverse system that produced minimal influence on measured disturbance growth. These and other aspects of the design of the test are discussed, after the historical and technical context of the experiment is described.

  8. Conceptual design of Dipole Research Experiment (DREX)

    Science.gov (United States)

    Qingmei, XIAO; Zhibin, WANG; Xiaogang, WANG; Chijie, XIAO; Xiaoyi, YANG; Jinxing, ZHENG

    2017-03-01

    A new terrella-like device for laboratory simulation of inner magnetosphere plasmas, Dipole Research Experiment, is scheduled to be built at the Harbin Institute of Technology (HIT), China, as a major state scientific research facility for space physics studies. It is designed to provide a ground experimental platform to reproduce the inner magnetosphere to simulate the processes of trapping, acceleration, and transport of energetic charged particles restrained in a dipole magnetic field configuration. The scaling relation of hydromagnetism between the laboratory plasma of the device and the geomagnetosphere plasma is applied to resemble geospace processes in the Dipole Research Experiment plasma. Multiple plasma sources, different kinds of coils with specific functions, and advanced diagnostics are designed to be equipped in the facility for multi-functions. The motivation, design criteria for the Dipole Research Experiment experiments and the means applied to generate the plasma of desired parameters in the laboratory are also described. Supported by National Natural Science Foundation of China (Nos. 11505040, 11261140326 and 11405038), China Postdoctoral Science Foundation (Nos. 2016M591518, 2015M570283) and Project Supported by Natural Scientific Research Innovation Foundation in Harbin Institute of Technology (No. 2017008).

  9. Simulator design for advanced ISDN satellite design and experiments

    Science.gov (United States)

    Pepin, Gerald R.

    1992-01-01

    This simulation design task completion report documents the simulation techniques associated with the network models of both the Interim Service ISDN (integrated services digital network) Satellite (ISIS) and the Full Service ISDN Satellite (FSIS) architectures. The ISIS network model design represents satellite systems like the Advanced Communication Technology Satellite (ACTS) orbiting switch. The FSIS architecture, the ultimate aim of this element of the Satellite Communications Applications Research (SCAR) program, moves all control and switching functions on-board the next generation ISDN communication satellite. The technical and operational parameters for the advanced ISDN communications satellite design will be obtained from the simulation of ISIS and FSIS engineering software models for their major subsystems. Discrete events simulation experiments will be performed with these models using various traffic scenarios, design parameters and operational procedures. The data from these simulations will be used to determine the engineering parameters for the advanced ISDN communications satellite.

  10. Design and analysis of numerical experiments

    Energy Technology Data Exchange (ETDEWEB)

    Bowman, K.P.; Sacks, J.; Chang, Yuefang (Univ. of Illinois, Urbana-Champaign (United States))

    1993-05-01

    Calculations with numerical models are often referred to as numerical experiments, by analogy to classical laboratory experiments. Usually, many numerical experiments are carried out to determine the response of a numerical model to variations of internal or external parameters over some range of interest. If individual experiments are inexpensive to carry out, and if the number of independent parameters is small, it may be possible to search the entire parameter space of the model. This is difficult, however, if the dimension of the parameter space is even moderately large or the codes are expensive to run. In this paper methods are presented for the design and analysis of numerical experiments that are especially useful and efficient in multidimensional parameter spaces. The analysis method, which is similar to kriging in the spatial analysis literature, fits a statistical model to the output of the numerical model. As an example, the method is applied to a fully nonlinear, global, equivalent-barotropic dynamical model. The statistical model also provides estimates of the uncertainty of predicted numerical model output, which can provide guidance on where in the parameter space to conduct further experiments, if necessary. The method can provide major improvements in the efficiency with which numerical sensitivity experiments are conducted. 17 refs., 9 figs., 2 tabs.

  11. DESIGN OF EXPERIMENTS IN TRUCK COMPANY

    Directory of Open Access Journals (Sweden)

    Bibiana Kaselyova

    2015-07-01

    Full Text Available Purpose: Design of experiment (DOE represent very powerful tool for process improvement vastly supported by six sigma methodology. This approach is mostly used by large and manufacturing orientated companies. Presented research is focused on use of DOE in truck company, which is medium size and service orientated. Such study has several purposes. Firstly, detailed description of improvement effort based on DOE can be used as a methodological framework for companies similar to researched one. Secondly, it provides example of successfully implemented low cost design of experiment practise. Moreover, performed experiment identifies key factors, which influence the lifetime of truck tyres.Design/methodology: The research in this paper is based on experiment conducted in Slovakian Truck Company. It provides detailed case study of whole improvement effort, together with problem formulation, design creation and analysis, as well as the results interpretation. The company wants to improve lifetime of the truck tyres. Next to fuel consumption, consumption of tyres and their replacement represent according to them, one of most costly processes in company. Improvement effort was made through the use of PDCA cycle. It start with analysis of current state of tyres consumption. The variability of tyres consumption based on years and types was investigated. Then the causes of tyres replacement were identified and screening DOE was conducted. After a screening design, the full factorial design of experiment was used to identify main drivers of tyres deterioration and breakdowns. Based on result of DOE, the corrective action were propose and implement.Findings: Based on performed experiment our research describes process of tyres use and replacement. It defines main reasons for tyre breakdown and identify main drivers which influence truck tyres lifetime. Moreover it formulates corrective action to prolong tyres lifetime.Originality: The study represents full

  12. HANARO cooling features: design and experience

    Energy Technology Data Exchange (ETDEWEB)

    Park, Cheol; Chae, Hee-Taek; Han, Gee-Yang; Jun, Byung-Jin; Ahn, Guk-Hoon [HANARO Operating Team, Korea Atomic Energy Research Institute, Taejon (Korea)

    1999-08-01

    In order to achieve the safe core cooling during normal operation and upset conditions, HANARO adopted an upward forced convection cooling system with dual containment arrangements instead of the forced downward flow system popularly used in the majority of forced convection cooling research reactors. This kind of upward flow system was selected by comparing the relative merits of upward and downward flow systems from various points of view such as safety, performance, maintenance. However, several operational matters which were not regarded as serious at design come out during operation. In this paper are presented the design and operational experiences on the unique cooling features of HANARO. (author)

  13. DESIGN AND EXPERIMENT OF ELECTRIC BUS

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Performance and reliability experiments on BJD-6100EV electric buses, jointly developed by Beijing Institute of Technology and Beijing Public Transport Company, are introduced. Output power model of battery pack is established and maximum output power is analyzed. A permanent magnetic direct current (PMDC) motor with enhanced windings is developed for the bus. Torque-speed characteristics of the motor are modeled and performance of electric bus is analyzed. Computational method of the range of electric bus is proposed and discussed. Experiments show that electric bus can realize design requirements. Computational methods are verified with the help of field test. It is expected that design and computation method will provide helpful reference to development of electric vehicles.

  14. Evolvable designs of experiments applications for circuits

    CERN Document Server

    Iordache, Octavian

    2009-01-01

    Adopting a groundbreaking approach, the highly regarded author shows how to design methods for planning increasingly complex experiments. He begins with a brief introduction to standard quality methods and the technology in standard electric circuits. The book then gives numerous examples of how to apply the proposed methodology in a series of real-life case studies. Although these case studies are taken from the printed circuit board industry, the methods are equally applicable to other fields of engineering.

  15. Measuring signal generators theory & design

    CERN Document Server

    Rybin, Yuriy K

    2014-01-01

    The book brings together the following issues: Theory of deterministic, random and discrete signals reproducible in oscillatory systems of generators; Generation of periodic signals with a specified spectrum, harmonic distortion factor and random signals with specified probability density function and spectral density; Synthesis of oscillatory system structures; Analysis of oscillatory systems with non-linear elements and oscillation amplitude stabilization systems; It considers the conditions and criteria of steady-state modes in signal generators on active four-pole elements with unidirectional and bidirectional transmission of signals and on two-pole elements; analogues of Barkhausen criteria; Optimization of oscillatory system structures by harmonic distortion level, minimization of a frequency error and set-up time of the steady state mode; Theory of construction of random signal generators; Construction of discrete and digital signal generators; Practical design of main units of generators; Practical bl...

  16. Measurement Design for Detecting Sparse Signals

    OpenAIRE

    Zahedi, Ramin; Pezeshki, Ali; Chong, Edwin K. P.

    2011-01-01

    We consider the problem of testing for the presence (or detection) of an unknown sparse signal in additive white noise. Given a fixed measurement budget, much smaller than the dimension of the signal, we consider the general problem of designing compressive measurements to maximize the measurement signal-to-noise ratio (SNR), as increasing SNR improves the detection performance in a large class of detectors. We use a lexicographic optimization approach, where the optimal measurement design fo...

  17. New Gear Transmission Error Measurement System Designed

    Science.gov (United States)

    Oswald, Fred B.

    2001-01-01

    The prime source of vibration and noise in a gear system is the transmission error between the meshing gears. Transmission error is caused by manufacturing inaccuracy, mounting errors, and elastic deflections under load. Gear designers often attempt to compensate for transmission error by modifying gear teeth. This is done traditionally by a rough "rule of thumb" or more recently under the guidance of an analytical code. In order for a designer to have confidence in a code, the code must be validated through experiment. NASA Glenn Research Center contracted with the Design Unit of the University of Newcastle in England for a system to measure the transmission error of spur and helical test gears in the NASA Gear Noise Rig. The new system measures transmission error optically by means of light beams directed by lenses and prisms through gratings mounted on the gear shafts. The amount of light that passes through both gratings is directly proportional to the transmission error of the gears. A photodetector circuit converts the light to an analog electrical signal. To increase accuracy and reduce "noise" due to transverse vibration, there are parallel light paths at the top and bottom of the gears. The two signals are subtracted via differential amplifiers in the electronics package. The output of the system is 40 mV/mm, giving a resolution in the time domain of better than 0.1 mm, and discrimination in the frequency domain of better than 0.01 mm. The new system will be used to validate gear analytical codes and to investigate mechanisms that produce vibration and noise in parallel axis gears.

  18. Towards a Better Measure of Customer Experience

    OpenAIRE

    Klaus, P; Maklan, Stan

    2013-01-01

    Defining and improving customer experience is a growing priority for market research because experience is replacing quality as the competitive battleground for marketing. Service quality, we argue, is an outgrowth of the Total Quality Management movement of the 1980s and suffers from that movement’s focus on the provider rather than the value derived by customers. The most popular measure of service quality – SERVQUAL – assesses the functional delivery of service during a single episode. Thi...

  19. Interferometer measurements in pulsed plasma experiments

    Energy Technology Data Exchange (ETDEWEB)

    Lisitsyn, I.V.; Kohno, Susumu; Kawauchi, Toshinori; Sueda, Tsuyoshi; Katsuki, Sunao; Akiyama, Hidenori [Kumamoto Univ. (Japan). Faculty of Engineering

    1997-11-01

    The interferometer measurements are extremely informative in plasma experiments allowing direct evaluations of the electron density. The primary goal of the work presented, is to build a laser interferometer which meets the requirements of the highest possible simplicity, economy, convenience and ease of construction. These requirements are successfully satisfied while maintaining high sensitivity ({+-}0.5deg - of phase shift) and a wide density range (10{sup 14} and 10{sup 19} cm{sup -2} - line-integrated) of the interferometer. In our experiments we used a low average power (5 mW) He-Ne laser without complicated and costly stabilization or detection environments. The He-Ne laser interferometer with the Michelson arrangement was used to measure the line-integrated plasma densities in various plasma experiments. Time- and spatially-resolved density measurements were performed for a plasma opening switch, a laser produced plasma, an electrothermal launcher and railgun plasmas. (author)

  20. Advanced Reactor Fuels Irradiation Experiment Design Objectives

    Energy Technology Data Exchange (ETDEWEB)

    Chichester, Heather Jean MacLean [Idaho National Lab. (INL), Idaho Falls, ID (United States); Hayes, Steven Lowe [Idaho National Lab. (INL), Idaho Falls, ID (United States); Dempsey, Douglas [Idaho National Lab. (INL), Idaho Falls, ID (United States); Harp, Jason Michael [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-09-01

    This report summarizes the objectives of the current irradiation testing activities being undertaken by the Advanced Fuels Campaign relative to supporting the development and demonstration of innovative design features for metallic fuels in order to realize reliable performance to ultra-high burnups. The AFC-3 and AFC-4 test series are nearing completion; the experiments in this test series that have been completed or are in progress are reviewed and the objectives and test matrices for the final experiments in these two series are defined. The objectives, testing strategy, and test parameters associated with a future AFC test series, AFC-5, are documented. Finally, the future intersections and/or synergies of the AFC irradiation testing program with those of the TREAT transient testing program, emerging needs of proposed Versatile Test Reactor concepts, and the Joint Fuel Cycle Study program’s Integrated Recycle Test are discussed.

  1. Photon Detection System Designs for the Deep Underground Neutrino Experiment

    CERN Document Server

    Whittington, Denver

    2015-01-01

    The Deep Underground Neutrino Experiment (DUNE) will be a premier facility for exploring long-standing questions about the boundaries of the standard model. Acting in concert with the liquid argon time projection chambers underpinning the far detector design, the DUNE photon detection system will capture ultraviolet scintillation light in order to provide valuable timing information for event reconstruction. To maximize the active area while maintaining a small photocathode coverage, the experiment will utilize a design based on plastic light guides coated with a wavelength-shifting compound, along with silicon photomultipliers, to collect and record scintillation light from liquid argon. This report presents recent preliminary performance measurements of this baseline design and several alternative designs which promise significant improvements in sensitivity to low-energy interactions.

  2. Photon Detection System Designs for the Deep Underground Neutrino Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Whittington, Denver [Indiana U.

    2015-11-19

    The Deep Underground Neutrino Experiment (DUNE) will be a premier facility for exploring long-standing questions about the boundaries of the standard model. Acting in concert with the liquid argon time projection chambers underpinning the far detector design, the DUNE photon detection system will capture ultraviolet scintillation light in order to provide valuable timing information for event reconstruction. To maximize the active area while maintaining a small photocathode coverage, the experiment will utilize a design based on plastic light guides coated with a wavelength-shifting compound, along with silicon photomultipliers, to collect and record scintillation light from liquid argon. This report presents recent preliminary performance measurements of this baseline design and several alternative designs which promise significant improvements in sensitivity to low-energy interactions.

  3. Photon detection system designs for the Deep Underground Neutrino Experiment

    Science.gov (United States)

    Whittington, D.

    2016-05-01

    The Deep Underground Neutrino Experiment (DUNE) will be a premier facility for exploring long-standing questions about the boundaries of the standard model. Acting in concert with the liquid argon time projection chambers underpinning the far detector design, the DUNE photon detection system will capture ultraviolet scintillation light in order to provide valuable timing information for event reconstruction. To maximize the active area while maintaining a small photocathode coverage, the experiment will utilize a design based on plastic light guides coated with a wavelength-shifting compound, along with silicon photomultipliers, to collect and record scintillation light from liquid argon. This report presents recent preliminary performance measurements of this baseline design and several alternative designs which promise significant improvements in sensitivity to low-energy interactions.

  4. Carbon Pricing: Design, Experiences and Issues

    DEFF Research Database (Denmark)

    Carbon Pricing reflects upon and further develops the ongoing and worthwhile global debate into how to design carbon pricing, and how to utilize the financial proceeds in the best possible way for society. The world has recently witnessed a significant downward adjustment in fossil fuel prices...... the consequential outcomes of different taxation compositions as regulatory instruments. Expert contributors assess a variety of national experiences to provide an empirical insight into the use of carbon taxes, emissions trading, energy taxes and excise taxes. The overarching discussion concludes that successful...

  5. Design of Experiments for Food Engineering

    OpenAIRE

    Pedersen, Søren Juhl; Frosch, Stina; Kulahci, Murat; Geoffrey Vining, G.

    2015-01-01

    This work looks at the application of Design of Experiments (DoE) to Food Engineering (FE) problems in relation to quality. The field of Quality Engineering (QE) is a natural partnering field for FE due to the extensive developments that QE has had in using DoE for quality improvement especially in manufacturing industries. In the thesis the concepts concerning food quality is addressed and in addition how QE proposes to define quality. There is seen a merger in how QE’s definition of quality...

  6. Precision measurements from the NOMAD experiment

    CERN Document Server

    Petti, R

    2004-01-01

    The NOMAD experiment collected unprecedent neutrino data samples, matching both the large statistics of massive calorimeters and the reconstruction quality of bubble chambers. This paper describes the determination of the weak mixing angle which is ongoing in NOMAD, with a target precision of $\\sim 1%$. In addition, measurements of the $\

  7. Designing Technology for Active Spectator Experiences at Sporting Events

    DEFF Research Database (Denmark)

    Veerasawmy, Rune; Ludvigsen, Martin

    2010-01-01

    behaviour in the context. The work presented also argues for a need to overcome the inclination to designing technological systems that imitate or compete with the experience of watching the television broadcast of the game. Experiments such as the presented BannerBattle are cornerstones in our exploratory......This paper explores the active spectator experience at sporting events, by presenting and reflecting upon a design experiment carried out at a number of football1 events. The initial hypothesis of the design process, leading to the design experiment has been that the spectator experience...... research-through-design approach to designing technologies for social experiences....

  8. Everyday life; Lived Experiences and Designed Learning

    DEFF Research Database (Denmark)

    Vestbo, Michelle; Helms, Niels Henrik; Dræbel, Tania Aase

    2016-01-01

    Everyday life; Lived Experiences and Designed Learning: Students knowledge cultures and epistemic trajectories in a range of professional bachelor educations Helms, N.H., Vestbo, M., Steenfeldt, V.O., Dræbel, T.A., Hansen, T.A.E., Storm, H., and Schmidt, L.S.K. (University College Zealand) In thi...... contributes to knowledge about how students translate and transform knowledge in various ways and how they establish professional competencies and identities and about the potential coherence between portfolio pedagogies and other educational activities.......Everyday life; Lived Experiences and Designed Learning: Students knowledge cultures and epistemic trajectories in a range of professional bachelor educations Helms, N.H., Vestbo, M., Steenfeldt, V.O., Dræbel, T.A., Hansen, T.A.E., Storm, H., and Schmidt, L.S.K. (University College Zealand......) In this panel the use of different methodological approaches to answer questions about students’ knowledge cultures and epistemic trajectories is discussed. The context is qualitative empirical educational studies in a range of professional bachelor educations; Nursing, Social Education and Nutrition and Health...

  9. Large utility boilers: experience and design trends

    Energy Technology Data Exchange (ETDEWEB)

    Davis, C.M.; Haller, K.H.; Wiener, M.

    1976-01-01

    The 1960s were characterized by heavy emphasis on the supercritical cycle and a rapid escalation of utility boiler size. Since the units now in operation were designed, several important changes have caused drastic turns in boiler development. The 2400-lb/in./sup 2/ single-reheat, 1000/sup 0/F/1000/sup 0/F cycle regained importance. The present trend is toward natural circulation because it is the simplest, the most efficient, and the most reliable method of furnace wall cooling. With the emphasis on energy self-sufficiency, coal became the dominant boiler fuel. A great deal of uncertainty exists regarding future development of load growth, fossil to nuclear split, environmental regulations, availability of fuel and availability of capital for new construction. These factors are shaping the trends that we see: the utilization of all available coal sources, including very-low-grade coals, the design of units for a wide range of coals, the design for greater operating flexibility, and placement of heavy emphasis on reliability. Based on the good experience with recent large B and W coal-fired boilers, the even greater conservatism applied to new large, coal-fired boilers should provide the capability for continued good performance and high availability.

  10. Intensive Measurement Designs for Research on Aging.

    Science.gov (United States)

    Rast, Philippe; Macdonald, Stuart W S; Hofer, Scott M

    2012-01-01

    Intensive measurement burst designs permit analysis of behavioral and biological processes as they unfold over short and long periods of time and providing the opportunity to identify change from an individual's normative level of functioning. The measurement burst design permits statistical decomposition of short-term variation and learning effects that overlay normative aging and provide stronger bases for detecting accelerated change due to pathological processes. We provide an overview of design features and analysis of measurement burst data in Project MIND. The objective of intensive measurement designs is to obtain greater resolution of processes of interest that permit reliable and sensitive assessments of functioning and change in functioning and of key determinants underlying short-term variation and long-term aging and health-related change.

  11. Measuring and Communicating Emotions Through Game Design

    DEFF Research Database (Denmark)

    Knutz, Eva; Markussen, Thomas

    2010-01-01

    . Second, healthcare personal and design researchers can use the CPgame to gain knowledge of this patient group as it measures the children’s subjective feelings about their emotions. In the paper we discuss how key theoretical concepts of emotion may help the designer to identify the basic building blocks...

  12. Deep space experiment to measure $G$

    CERN Document Server

    Feldman, Michael R; Schubert, Gerald; Trimble, Virginia; Kopeikin, Sergei; Lämmerzahl, Claus

    2016-01-01

    Responding to calls from the National Science Foundation (NSF) for new proposals to measure the gravitational constant $G$, we offer an interesting experiment in deep space employing the classic gravity train mechanism. Our setup requires three bodies: a larger layered solid sphere with a cylindrical hole through its center, a much smaller retroreflector which will undergo harmonic motion within the hole and a host spacecraft with laser ranging capabilities to measure round trip light-times to the retroreflector but ultimately separated a significant distance away from the sphere-retroreflector apparatus. Measurements of the period of oscillation of the retroreflector in terms of host spacecraft clock time using existing technology could give determinations of $G$ nearly three orders of magnitude more accurate than current measurements here on Earth. However, significant engineering advances in the release mechanism of the apparatus from the host spacecraft will likely be necessary. Issues with regard to the ...

  13. Optimal Experiment Design for Thermal Characterization of Functionally Graded Materials

    Science.gov (United States)

    Cole, Kevin D.

    2003-01-01

    The purpose of the project was to investigate methods to accurately verify that designed , materials meet thermal specifications. The project involved heat transfer calculations and optimization studies, and no laboratory experiments were performed. One part of the research involved study of materials in which conduction heat transfer predominates. Results include techniques to choose among several experimental designs, and protocols for determining the optimum experimental conditions for determination of thermal properties. Metal foam materials were also studied in which both conduction and radiation heat transfer are present. Results of this work include procedures to optimize the design of experiments to accurately measure both conductive and radiative thermal properties. Detailed results in the form of three journal papers have been appended to this report.

  14. Design and test of pixel sensors for the CMS experiment

    CERN Document Server

    Bölla, G; Rott, C; Roy, A; Kwan, S; Chien, C Y; Cho, H; Gobbi, B; Horisberger, R P; Kaufmann, R

    2001-01-01

    The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) will have a silicon pixel detector as its innermost tracking device. The pixel system will be exposed to the harsh radiation environment of the LHC. Prototype sensors have been designed to meet the specifications of the CMS experiment. The sensors are n/sup +/-n devices to allow partial depletion operation after bulk type inversion. The isolation of the n/sup +/ pixels is provided through a novel double open p-ring design that allows sensor testing before bump bonding and flip chipping. The prototype wafers contain a variety of p-stop designs and are fabricated by two vendors on different bulk substrates including oxygenated silicon. A study of the static measurement of the prototype sensors before irradiation is presented. (2 refs).

  15. Judgement post-stratification for designed experiments.

    Science.gov (United States)

    Du, Juan; MacEachern, Steven N

    2008-06-01

    In many scientific studies, information that is not easily translated into covariates is ignored in the analysis. However, this type of information may significantly improve inference. In this research, we apply the idea of judgment post-stratification to utilize such information. Specifically, we consider experiments that are conducted under a completely randomized design. Sets of experimental units are formed, and the units in a set are ranked. Estimation is performed conditional on the sets and ranks. We propose a new estimator for a treatment contrast. We improve the new estimator by Rao-Blackwellization. Asymptotic distribution theory and corresponding inferential procedures for both estimators are developed. Simulation studies quantify the superiority of the new estimators and show their desirable properties for small and moderate sample sizes. The impact of the new techniques is illustrated with data from a clinical trial.

  16. Design of Experiments for Food Engineering

    DEFF Research Database (Denmark)

    Pedersen, Søren Juhl; Geoffrey Vining, G.

    in manufacturing industries. In the thesis the concepts concerning food quality is addressed and in addition how QE proposes to define quality. There is seen a merger in how QE’s definition of quality has been translated for food. At the same time within FE a divergence has been proposed in the literature...... emphasizing mechanistic modelling over empirical methods. This thesis proposes that this divergence is based on a misunderstanding of what empirical methods entail. The misunderstanding could stem from the issue that the majority of the literature trying to address these issues has focused on analysis...... procedure almost to the point of excluding the experimental principles and procedures. This thesis has tried to address this as far as possible. The focus has been on supplying practical interpretations of randomization and what blocking entails when designing experiments. These practical interpretations...

  17. Design and operation experience of TRACY

    Energy Technology Data Exchange (ETDEWEB)

    Takeshita, Isao; Ohno, Akio; Sakuraba, Koichi; Ogawa, Kazuhiko; Morita, Toshio; Aizawa, Eiju; Sugawara, Susumu [Department of NUCEF Project, Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan)

    1999-08-01

    To realize the dynamic behaviors at a criticality accident is an essential issue for not only rational design of fissile material handing facilities but also safety management of the facilities. The Transient Experiment Critical Facility (TRACY) had been constructed at the Nuclear Fuel Cycle Safety Engineering Research Facility (NUCEF) in JAERI. The purpose of TRACY is to obtain experimental data necessary to evaluate potential hazard of a criticality accident postulated in safety assessments of a reprocessing plant. TRACY's first transient operation using low enriched (10%) uranium nitrate solution fuel went on July 30 1996 and 118 operations including 51 transient operations are recorded since the first critical achievement. TRACY carries out intensive experimental researches on nuclear-thermal-hydraulic dynamic behavior and on investigation of migration amount of radioactive nuclei in solution fuel to gas phase. (author)

  18. Top quark measurements in the CMS experiment

    CERN Document Server

    Lista, Luca

    2017-01-01

    Experimental results on top-quark physics obtained at the CMS experiment are reported based on the data recorded at centre-of-mass energy up to 13 TeV. Inclusive and differential cross sections for both top-quark pair and single top-quark production are presented, as well as measurements of top-quark properties in production and decay, and searches for anomalous couplings. The presented measurements test theoretical predictions, including recent perturbative QCD calculations, provide constraints of fundamental standard model parameters, and set limits on physics beyond the standard model.

  19. Information optimal compressive sensing: static measurement design.

    Science.gov (United States)

    Ashok, Amit; Huang, Liang-Chih; Neifeld, Mark A

    2013-05-01

    The compressive sensing paradigm exploits the inherent sparsity/compressibility of signals to reduce the number of measurements required for reliable reconstruction/recovery. In many applications additional prior information beyond signal sparsity, such as structure in sparsity, is available, and current efforts are mainly limited to exploiting that information exclusively in the signal reconstruction problem. In this work, we describe an information-theoretic framework that incorporates the additional prior information as well as appropriate measurement constraints in the design of compressive measurements. Using a Gaussian binomial mixture prior we design and analyze the performance of optimized projections relative to random projections under two specific design constraints and different operating measurement signal-to-noise ratio (SNR) regimes. We find that the information-optimized designs yield significant, in some cases nearly an order of magnitude, improvements in the reconstruction performance with respect to the random projections. These improvements are especially notable in the low measurement SNR regime where the energy-efficient design of optimized projections is most advantageous. In such cases, the optimized projection design departs significantly from random projections in terms of their incoherence with the representation basis. In fact, we find that the maximizing incoherence of projections with the representation basis is not necessarily optimal in the presence of additional prior information and finite measurement noise/error. We also apply the information-optimized projections to the compressive image formation problem for natural scenes, and the improved visual quality of reconstructed images with respect to random projections and other compressive measurement design affirms the overall effectiveness of the information-theoretic design framework.

  20. Tourism Spaces: The New Experience Design

    Directory of Open Access Journals (Sweden)

    Sara Cipolletti

    2014-06-01

    Full Text Available The aim of this article is to offer a theoretical contribution to the organisation, design and significance of tourism spaces, at a time when tourist practices are experiencing both change and intensification. From an architectural perspective, the study seeks to understand the evolutionary link between holiday practices and spaces, interpreting tourism as a context of creative relations between people, aspects, things and the places in which practices take place.Based on this interpretation, the paper defines architectural and urban categories of tourism, briefly comparing various literature on tourist organisations. In the second part, through the examination of recent examples of tourist experiences, planning actions and their ability to generate new tourism landscapes are evaluated. For both places and tourist experiences, that which emerges and the fields of application involved constitute guidelines and development tools for a form of tourism design that is more knowledgeable about the encounter between tourists and residents, and more reliable given that it is founded on the distinctive features of territories. The study demonstrates that tourism spaces, if intended as contexts of creative relations between people, aspects, things and places in which practices take place, may now develop a certain potential that once again calls into question a series of much debated opposites, tourists - residents, free time - work time, holiday space - day-to-day space, attractive resources and their transformation into elements of tourism, which had otherwise previously been consolidated by the tourist phenomenon. In the end, tourism proves itself to be an imaginative impulse, which is capable of reinventing the qualities of places and successfully orientating urban events.

  1. Plume Measurement System (PLUMES) Calibration Experiment

    Science.gov (United States)

    1994-08-01

    Atle Lohrmann SonTek, Inc. 7940 Silverton Avenue, No. 105 San Diego, California 92126 and Craig Huhta JIMAR University of Hawaii, Honolulu, Hawaii 96822...Measurement System (PLUMES) Calibration Experiment by Age Lohrmann SonTek, Inc. 7940 Silverton Avenue, No. 105 San Diego, CA 92126 Craig Huhta JIMAR...PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) &. PERFORMING ORGANIZATION SonTek, Inc., 7940 Silverton Avenue, No. 105, San Diego, CA 92126 REPORT NUMBER

  2. Interim Service ISDN Satellite (ISIS) hardware experiment design for advanced ISDN satellite design and experiments

    Science.gov (United States)

    Pepin, Gerard R.

    1992-01-01

    The Interim Service Integrated Services Digital Network (ISDN) Satellite (ISIS) Hardware Experiment Design for Advanced Satellite Designs describes the design of the ISDN Satellite Terminal Adapter (ISTA) capable of translating ISDN protocol traffic into time division multiple access (TDMA) signals for use by a communications satellite. The ISTA connects the Type 1 Network Termination (NT1) via the U-interface on the line termination side of the CPE to the V.35 interface for satellite uplink. The same ISTA converts in the opposite direction the V.35 to U-interface data with a simple switch setting.

  3. Design Point for a Spheromak Compression Experiment

    Science.gov (United States)

    Woodruff, Simon; Romero-Talamas, Carlos A.; O'Bryan, John; Stuber, James; Darpa Spheromak Team

    2015-11-01

    Two principal issues for the spheromak concept remain to be addressed experimentally: formation efficiency and confinement scaling. We are therefore developing a design point for a spheromak experiment that will be heated by adiabatic compression, utilizing the CORSICA and NIMROD codes as well as analytic modeling with target parameters R_initial =0.3m, R_final =0.1m, T_initial =0.2keV, T_final =1.8keV, n_initial =1019m-3 and n_final = 1021m-3, with radial convergence of C =3. This low convergence differentiates the concept from MTF with C =10 or more, since the plasma will be held in equilibrium throughout compression. We present results from CORSICA showing the placement of coils and passive structure to ensure stability during compression, and design of the capacitor bank needed to both form the target plasma and compress it. We specify target parameters for the compression in terms of plasma beta, formation efficiency and energy confinement. Work performed under DARPA grant N66001-14-1-4044.

  4. Capturing learning effects on eye movements in repeated measures experiments

    DEFF Research Database (Denmark)

    Bagger, Martin; Orquin, Jacob Lund; Fiedler, Susann

    We propose and illustrate that repeated exposure to stimuli sets increases the size of the saccade amplitudes. Saccadic amplitudes are closely related to the perceptual span and therefore used as a measure for the information intake in an experiment. Studies on expertise have shown that experts...... experiment in which 68 participants made choices between four alternatives with three different between subject conditions varying in presentation format (verbal matrix, a pictorial matrix, and a realistic product representation). The results consistently demonstrate an increase of the saccade amplitude over...... the course of the experiment independent of condition. We conclude by discussing our results in the light of the possible increase of the perceptual span and its implications for the research procedure in eye-tracking experiments with a repeated measurement design....

  5. Designing Experiments that Contr ol for Spatial and Temporal Variation

    Directory of Open Access Journals (Sweden)

    Peter Petraitis

    2003-12-01

    Full Text Available Spatial and temporal variation can cause problems in designing and conducting experiments. An introduction to methods for controlling spatial and temporal variation in ecological experiments is provided in this article. Failure to consider spatial and temporal variation often causes researchers to lay out experiments incorrectly . The challenge is to design experiments that not only reflect the natural variation seen in the field but also control for the variation so that statistical tests have suf ficient power . Spatial variation is usually controlled by grouping observations and treatments into blocks. Blocks can be laid out in a number of ways and Analysis of Variance (ANOV A approaches to control for block effects are discussed. The control of temporal variation presents special dif ficulties because data are often serially correlated and so observations are not independent. Use of intervention analysis and repeated measures analysis of variance to control for temporal variation are discussed. Ecologists have also used experimental designs which are known as BACI designs (i.e., Before-After -Control-Impact design and can be extended to include multiple control and/or impact sites. Intervention analysis, BACI designs, and their extensions have subtle dif ferences because of dif ferent assumptions about not only temporal variation but also spatial variation. Several recommendations are given. These include: 1 the need to have good statistical advice before starting an experiment, 2 the need to have a suf ficient number of replicates that are spread over the range of spatial and temporal variation, and 3 the need to correctly control for serial correlation.

  6. Experimental Design and Power Calculation for RNA-seq Experiments.

    Science.gov (United States)

    Wu, Zhijin; Wu, Hao

    2016-01-01

    Power calculation is a critical component of RNA-seq experimental design. The flexibility of RNA-seq experiment and the wide dynamic range of transcription it measures make it an attractive technology for whole transcriptome analysis. These features, in addition to the high dimensionality of RNA-seq data, bring complexity in experimental design, making an analytical power calculation no longer realistic. In this chapter we review the major factors that influence the statistical power of detecting differential expression, and give examples of power assessment using the R package PROPER.

  7. Salinity Measurements During the Gulf Stream Experiment

    Science.gov (United States)

    LeVine, D. M.; Koblinsky, C.; Howden, S.; Goodberlet, M.

    2000-01-01

    The salinity of the open ocean is important for understanding ocean circulation, for understanding energy exchange with the atmosphere and for improving models to predict weather and climate. Passive microwave sensors at L-band (1.4 GHz) operating from aircraft have demonstrated that salinity can be measured with sufficient accuracy (1 psu) to be scientifically meaningful in coastal waters. However, measuring salinity in the open ocean presents unresolved issues largely because of the much greater accuracy (approx. 0.1 psu) required to be scientifically viable. In the summer of 1999 a series of measurements called, The Gulf Stream Experiment, were conducted as part of research at the Goddard Space Flight Center to test the potential for passive microwave remote sensing of salinity in the open ocean. The measurements consisted of a compliment of airborne microwave instruments (radiometers and scatterometer) and ships and drifters for surface truth. The study area was a 200 km by 100 km rectangle about 250 km east of Delaware Bay between the continental shelf waters and north wall of the Gulf Stream. The primary passive instruments were the ESTAR radiometer (L-band, H-pol) and the SLFMR radiometer (L-band, V-pol). In addition, the compliment of instruments on the aircraft included a C-band radiometer (ACMR), an ocean wave scatterometer (ROWS) and an infrared radiometer. A GPS backscatter experiment was also part of the package. These instruments were mounted on the NASA P-3 Orion aircraft. Surface salinity measurements were provided by the RN Cape Henlopen and MN Oleander (thermosalinographs) plus salinity and temperature sensors on three surface drifters deployed from the RN Cape Henopen. The primary experiment period was August 26-September 2, 1999. During this period the salinity field within the study area consisted of a gradient on the order of 2-3 psu in the vicinity of the shelf break and a warm core ring with a gradient of 1-2 psu. Detailed maps were made

  8. Optimal experiment design revisited: fair, precise and minimal tomography

    CERN Document Server

    Nunn, J; Puentes, G; Lundeen, J S; Walmsley, I A

    2009-01-01

    Given an experimental set-up and a fixed number of measurements, how should one take data in order to optimally reconstruct the state of a quantum system? The problem of optimal experiment design (OED) for quantum state tomography was first broached by Kosut et al. [arXiv:quant-ph/0411093v1]. Here we provide efficient numerical algorithms for finding the optimal design, and analytic results for the case of 'minimal tomography'. We also introduce the average OED, which is independent of the state to be reconstructed, and the optimal design for tomography (ODT), which minimizes tomographic bias. We find that these two designs are generally similar. Monte-Carlo simulations confirm the utility of our results for qubits. Finally, we adapt our approach to deal with constrained techniques such as maximum likelihood estimation. We find that these are less amenable to optimization than cruder reconstruction methods, such as linear inversion.

  9. Using Experience-Based Design to Improve the Care Experience for Patients With Pancreatic Cancer.

    Science.gov (United States)

    Hagensen, Ann; London, Amy E; Phillips, Jennifer J; Helton, W Scott; Picozzi, Vincent J; Blackmore, C Craig

    2016-12-01

    Despite the importance of the patient care experience to quality and outcome, the literature detailing the care experience in patients with pancreatic cancer is limited. To elicit the experience of patients with pancreatic cancer for care redesign, we deployed experience-based design, an emerging methodology based on identification of events of high emotional content, known as touch points, to delineate qualitatively what matters most to patients and families. We defined touch points through direct observations, interviews, and a focus group. We then used experience questionnaires to measure emotional content and develop an experience map to graphically display the fluctuating emotional journey through the care processes. Study subjects were patients with pancreatic cancer who were cared for at Virginia Mason Medical Center, family caregivers, and staff. Redesign was initiated through an all-day improvement event in September 2013. During 2013 and 2014, we cared for 485 new patients with pancreatic cancer, the majority of whom had local disease at diagnosis. The response rate for the experience questionnaire was 23% (117 of 500 questionnaires distributed). The experience-based design results were often contrary to staff preconceptions of the care experience for patients with pancreatic cancer, and contributed to redesign in three key areas: understanding and documenting patient goals and values, providing better resources for caregivers/families, and improving care coordination and support services. Experience-based design enabled us to understand the care experience and associated emotional content for patients with pancreatic cancer and their caregivers. This knowledge then supported care redesign targeted at areas of high negative emotional content.

  10. Prior experience and its effects on audience design

    OpenAIRE

    Wilson, Kerry

    2008-01-01

    PRIOR EXPERIENCE AND ITS EFFECTS ON AUDIENCE DESIGN. Abstract Objective Audience design involves tailoring utterances to suit the needs of your partner. The current experiment was interested in whether a speaker’s experience has an impact on their use of audience design as a conversational tool and whether a speaker can transfer knowledge gained in one task across to a similar task. Design Two description tasks were used to investigate audience design by recording the numbe...

  11. Gamma Astrometric Measurement Experiment (GAME) - Science case

    Science.gov (United States)

    Vecchiato, Alberto; Gai, Mario; Lattanzi, Mario G.; Crosta, Maria Teresa; Sozzetti, Alessandro

    GAME (Gamma Astrometric Measurement Experiment) is a concept for a small mission whose main goal is to measure from space the γ parameter of the Parameterized Post-Newtonian formalism. A satellite looking as close as possible to the Solar limb implements a technique similar to that used during the solar eclipse of 1919, when Dyson, Eddington and collaborators measured for the first time the gravitational bending of light. Preliminary simulations have shown that the expected final accuracy can reach the 10-7 level or better. This makes GAME a decisive experiment for the understanding of gravity physics, cosmology and the Universe evolution at a fundamental level. During the last decade, in fact, a strong experimental evidence of an acceleration of the expansion of the Universe at the present time has been provided by several observational data. This has been interpreted as the effect of a long range perturbation of the gravity field of the visible matter generated by the so-called Dark Energy. These data add to those available for long time at different scale length, which are explained with the existence of non-barionic Dark Matter (e.g. galaxy rotation curves) or with some kind of modification of the General Relativity theory (e.g. Pioneer anomalies). However, there are claims that these data can be explained with a modified version of General Relativity, in which the curvature invariant R is no longer constant in the Einstein equations (f (R) gravity theories). Present experimental data are not accurate enough to discriminate between these scenarios, but this could be done with a 10-7 -level measure of γ. Moreover, the limited fraction of time needed for the main experiment with respect to the overall mission duration opens interesting possibilities for other kinds of measurements. One is to measure the light deflection induced by the quadrupole moment of giant planets like Jupiter or Saturn, an effect predicted by General Relativity but never measured up to

  12. Measuring and Communicating Emotions Through Game Design

    DEFF Research Database (Denmark)

    Knutz, Eva; Markussen, Thomas

    2010-01-01

    This paper explores how emotion research may inform the design of a playful interactive tool for emotion measurement and communication, called Child Patient Game (CPgame) that has been developed for paediatric patients at a Danish hospital. The CPgame differs from other instruments in that it uses...... digital narrative and game play as means for self-report. In so doing it integrate play, communication and measurement in one and the same device. First it gives 4-6 year old hospitalized children an opportunity to learn how to cope with their own emotional reactions to medical treatment through game play....... Second, healthcare personal and design researchers can use the CPgame to gain knowledge of this patient group as it measures the children’s subjective feelings about their emotions. In the paper we discuss how key theoretical concepts of emotion may help the designer to identify the basic building blocks...

  13. Design and realization of random measurement scheme for compressed sensing

    Institute of Scientific and Technical Information of China (English)

    XIE Cheng-jun; XU Lin

    2012-01-01

    Design and realization of random measurement scheme for compressed sensing (CS) are presented in this paper,and lower limits of the measurement number are achieved when the precise reconstruction is realized.Four kinds of random measurement matrices are designed according to the constraint conditions of random measurement.The performance is tested employing the algorithm of stagewise orthogonal matching pursuit (StOMP).Results of the experiment show that lower limits of the measurement number are much better than the results described in Refs.[ 13-15].When the ratios of measurement to sparsity are 3.8 and 4.0,the mean relative errors of the reconstructed signals are 8.57 × 10-13 and 2.43 × 10-14,respectively,which confirms that the random measurement scheme of this paper is very effective.

  14. Compressor Part I: Measurement and Design Modeling

    Directory of Open Access Journals (Sweden)

    Thomas W. Bein

    1999-01-01

    method used to design the 125-ton compressor is first reviewed and some related performance curves are predicted based on a quasi-3D method. In addition to an overall performance measurement, a series of instruments were installed on the compressor to identify where the measured performance differs from the predicted performance. The measurement techniques for providing the diagnostic flow parameters are also described briefly. Part II of this paper provides predictions of flow details in the areas of the compressor where there were differences between the measured and predicted performance.

  15. Integrating conceptualizations of experience into the interaction design process

    DEFF Research Database (Denmark)

    Dalsgaard, Peter

    2010-01-01

    From a design perspective, the increasing awareness of experiential aspects of interactive systems prompts the question of how conceptualizations of experience can inform and potentially be integrated into the interaction design process. This paper presents one approach to integrating theoretical...... perspectives on experience in design by formulating conceptual constructs that can guide design decisions....

  16. The DESI Experiment Part II: Instrument Design

    CERN Document Server

    Aghamousa, Amir; Ahlen, Steve; Alam, Shadab; Allen, Lori E; Prieto, Carlos Allende; Annis, James; Bailey, Stephen; Balland, Christophe; Ballester, Otger; Baltay, Charles; Beaufore, Lucas; Bebek, Chris; Beers, Timothy C; Bell, Eric F; Bernal, José Luis; Besuner, Robert; Beutler, Florian; Blake, Chris; Bleuler, Hannes; Blomqvist, Michael; Blum, Robert; Bolton, Adam S; Briceno, Cesar; Buckley-Geer, Elizabeth; Burden, Angela; Burtin, Etienne; Busca, Nicolas G; Cahn, Robert N; Cai, Yan-Chuan; Carlberg, Raymond G; Carton, Pierre-Henri; Casas, Ricard; Castander, Francisco J; Claybaugh, Todd M; Close, Madeline; Coker, Carl T; Cole, Shaun; Cooper, Andrew P; Cousinou, M -C; Crocce, Martin; Cuby, Jean-Gabriel; Cunningham, Daniel P; Davis, Tamara; Dawson, Kyle S; de la Macorra, Axel; De Vicente, Juan; Delubac, Timothée; Derwent, Mark; Dey, Arjun; Dhungana, Govinda; Ding, Zhejie; Duan, Yutong T; Ealet, Anne; Edelstein, Jerry; Eftekharzadeh, Sarah; Eisenstein, Daniel J; Elliott, Ann; Escoffier, Stephanie; Evatt, Matthew; Fagrelius, Parker; Fan, Xiaohui; Fanning, Kevin; Farahi, Arya; Favole, Ginevra; Feng, Yu; Fernandez, Enrique; Findlay, Joseph R; Finkbeiner, Douglas P; Fitzpatrick, Michael J; Flaugher, Brenna; Flender, Samuel; Font-Ribera, Andreu; Forero-Romero, Jaime E; Fosalba, Pablo; Frenk, Carlos S; Fumagalli, Michele; Garcia-Bellido, Juan; Gaztanaga, Enrique; Gershkovich, Irina; Gillet, Denis; Gonzalez-de-Rivera, Guillermo; Gonzalez-Perez, Violeta; Gott, Shelby; Graur, Or; Gutierrez, Gaston; Guy, Julien; Habib, Salman; Heetderks, Henry; Heetderks, Ian; Heitmann, Katrin; Hellwing, Wojciech A; Herrera, David A; Ho, Shirley; Honscheid, Klaus; Huff, Eric; Hutchinson, Timothy A; Huterer, Dragan; Hwang, Ho Seong; Laguna, Joseph Maria Illa; Ishikawa, Yuzo; Jacobs, Dianna; Jeffrey, Niall; Jelinsky, Patrick; Jiang, Linhua; Jimenez, Jorge; Johnson, Jennifer; Joyce, Richard; Jullo, Eric; Juneau, Stephanie; Kama, Sami; Karcher, Armin; Karkar, Sonia; Kehoe, Robert; Kennamer, Noble; Kent, Stephen; Kilbinger, Martin; Kim, Alex G; Kirkby, David; Kisner, Theodore; Kitanidis, Ellie; Kneib, Jean-Paul; Koposov, Sergey; Kovacs, Eve; Kremin, Anthony; Kron, Richard; Kronig, Luzius; Kueter-Young, Andrea; Lacey, Cedric G; Lafever, Robin; Lahav, Ofer; Lambert, Andrew; Landriau, Martin; Lang, Dustin; Name, Publication; Lauer, Tod R; Goff, Jean-Marc Le; Guillou, Laurent Le; Van Suu, Auguste Le; Lee, Jae Hyeon; Lee, Su-Jeong; Leitner, Daniela; Levi, Michael E; L'Huillier, Benjamin; Li, Baojiu; Liang, Ming; Lin, Huan; Linder, Eric; Loebman, Sarah R; Lukić, Zarija; MacCrann, Niall; Magneville, Christophe; Makarem, Laleh; Manera, Marc; Manser, Christopher J; Marshall, Robert; Martini, Paul; Massey, Richard; Matheson, Thomas; McCauley, Jeremy; McDonald, Patrick; McGreer, Ian D; Meisner, Aaron; Metcalfe, Nigel; Miller, Timothy N; Miquel, Ramon; Moustakas, John; Myers, Adam; Naik, Milind; Newman, Jeffrey; Nichol, Robert C; Nicola, Andrina; da Costa, Luiz Nicolati; Niz, Gustavo; Norberg, Peder; Nord, Brian; Norman, Dara; Nugent, Peter; O'Brien, Thomas; Oh, Minji; Olsen, Knut A G; Padilla, Cristobal; Padmanabhan, Hamsa; Padmanabhan, Nikhil; Palanque-Delabrouille, Nathalie; Palmese, Antonella; Pappalardo, Daniel; Park, Changbom; Patej, Anna; Peacock, John A; Peiris, Hiranya V; Percival, Will J; Perruchot, Sandrine; Pieri, Matthew M; Pogge, Richard; Poppett, Claire; Probst, Ronald G; Rabinowitz, David; Ree, Chang Hee; Refregier, Alexandre; Regal, Xavier; Reid, Beth; Reil, Kevin; Rezaie, Mehdi; Rockosi, Connie; Roe, Natalie; Ronayette, Samuel; Roodman, Aaron; Ross, Ashley J; Ross, Nicholas P; Rossi, Graziano; Rozo, Eduardo; Ruhlmann-Kleider, Vanina; Rykoff, Eli; Sabiu, Cristiano; Samushia, Lado; Sanchez, Javier; Schlegel, David J; Schneider, Michael; Schubnell, Michael; Secroun, Aurélia; Seljak, Uros; Seo, Hee-Jong; Serrano, Santiago; Shafieloo, Arman; Shan, Huanyuan; Sholl, Michael J; Shourt, William V; Silber, Joseph H; Silva, David R; Sirk, Martin M; Slosar, Anze; Smith, Alex; Smoot, George; Som, Debopam; Song, Yong-Seon; Sprayberry, David; Staten, Ryan; Stefanik, Andy; Tarle, Gregory; Tie, Suk Sien; Tinker, Jeremy L; Tojeiro, Rita; Valdes, Francisco; Valenzuela, Octavio; Valluri, Monica; Vargas-Magana, Mariana; Verde, Licia; Walker, Alistair R; Wang, Yuting; Weaver, Benjamin A; Weaverdyck, Curtis; Wechsler, Risa; Weinberg, David H; White, Martin; Yang, Qian; Yeche, Christophe; Zhao, Gong-Bo; Zheng, Yi; Zhu, Yaling; Zou, Hu; Zu, Ying

    2016-01-01

    DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey. The DESI instrument is a robotically-actuated, fiber-fed spectrograph capable of taking up to 5,000 simultaneous spectra over a wavelength range from 360 nm to 980 nm. The fibers feed ten three-arm spectrographs with resolution $R= \\lambda/\\Delta\\lambda$ between 2000 and 5500, depending on wavelength. The DESI instrument will be used to conduct a five-year survey designed to cover 14,000 deg$^2$. This powerful instrument will be installed at prime focus on the 4-m Mayall telescope in Kitt Peak, Arizona, along with a new optical corrector, which will provide a three-degree diameter field of view. The DESI collaboration will also deliver a spectroscopic pipeline and data management system to reduce and archive all data for eventual public use.

  17. New physical model design for Vapex experiments

    Energy Technology Data Exchange (ETDEWEB)

    Yazdani, A.; Maini, B.B. [Calgary Univ., AB (Canada)

    2004-07-01

    Solvent extraction is gaining much attention as an in-situ recovery method for difficult to produce heavy oil and tar sand deposits. Vapour extraction (VAPEX) is similar to the steam assisted gravity drainage (SAGD) process used in heavy oil production. In VAPEX, vaporized solvents are used instead of high temperature steam and the viscosity of the oil is reduced in situ. VAPEX is well suited for formations that are thin and where heat losses are unavoidable. It can be applied in the presence of overlying gas caps; bottom water aquifers; low thermal conductivity; high water saturation; clay swelling; and, formation damage. Modelling studies that use rectangular shaped models are limited at high reservoir pressures. This study presents a new design of physical models that overcomes this limitation. The annular space between two cylindrical pipes is used for developing slice-type and sand-filled models. This newly developed model is more compatible with high pressure. This paper compares results of VAPEX experiments using the cylindrical models and the rectangular models. The stabilized drainage rates from the newly developed cylindrical models are in very good agreement with those from the rectangular models. 16 refs., 3 tabs., 11 figs.

  18. 透析液pH值和电导率测量仪的设计与试验%Design and experiment on the dialysate pH value and electrical conductivity measuring instrument

    Institute of Scientific and Technical Information of China (English)

    刘致滨; 宋文晓; 杨晶娟; 朱懿恒; 卢广文

    2012-01-01

    背景:在血液透析过程中,透析液的浓度直接决定了透析的效果.目的:旨在设计一种应用于测量透析液浓度的pH值和电导率的装置,并通过试验对测量仪的性能进行测试和分析.方法:开发用于测量透析液的pH值和电导率测量仪,提出一种频率可调的双极性间歇脉冲激励方法应用于电导率测量,极大地减少极化效应和电容效应对测量的影响,同时对电导率测量值进行温度校正.采用两点校正法对pH值进行标定,提高测量的精确度.结果与结论:测量仪样机在实际的透析液中进行相关试验.测量仪的pH值测量值和标准值的相对误差小于1%,电导率的测量值与标准值的相对误差小于0.5%.通过对比试验说明,可调频率的间歇双极性脉冲法比双极性脉冲法的误差小,能及时地跟踪透析液浓度的变化.结果表明,测量仪能够实现对透析液浓度的精确测量,满足血液透析机对透析液的实时检测要求,可以广泛应用于血液透析机中透析液的浓度检测中.%BACKGROUND: The dialysate concentration directly determines the efficacy of dialysis during the process of hemodialysis. OBJECTIVE: To design a measuring instrument of dialysate pH value and electrical conductivity and to test the performance of the measuring instrument through experiments.METHODS: The variable frequency of bipolar interim pulse method was put forward to reduce polarization and capacitance effect on the conductivity measurement tremendously while simultaneously temperature compensation was selected for electrical conductivity. Two-point correction method was used for calibration test to improve the accuracy measurement of pH value. RESULTS AND CONCLUSION: The trial manufactured carried experiment on the actual dialysate. The relative error between the calibration result and the accurate value for dialysate pH value was less than 1 % and that of electrical conductivity was less than 0.5%. Besides

  19. Design, construction, alignment, and calibration of a compact velocimetry experiment

    Energy Technology Data Exchange (ETDEWEB)

    Kaufman, Morris I.; Malone, Robert M.; Frogget, Brent C.; Romero, Vincent T.; Esquibel, David L.; Iverson, Adam; Lare, Gregory A.; Briggs, Bart; DeVore, Douglas; Cata, Brian; McGillivray, Kevin; Palagi, Martin; et al.,

    2007-08-31

    A velocimetry experiment has been designed to measure shock properties for small, cylindrical, metal targets (8 mm diameter × 2 mm thick). A target is accelerated by high explosives, caught, then retrieved for later inspection. The target is expected to move at a velocity of 0.1 to 3 km/sec. The complete experiment canister is ~105 mm in diameter and 380 mm long. Optical velocimetry diagnostics include the Velocity Interferometer System for Any Reflector (VISAR) and photon Doppler velocimetry (PDV). The packaging of the velocity diagnostics is not allowed to interfere with the foam catchment or an X-ray imaging diagnostic. Using commercial lenses, a single optical relay collects Doppler-shifted light for both VISAR and PDV. The use of fiber optics allows measurement of point velocities on the target surface for accelerations lasting for 3 mm of travel. Operating at 532 nm, the VISAR has separate illumination fibers requiring alignment. The PDV diagnostic operates at 1550 nm but is aligned and calibrated at 670 nm. VISAR and PDV diagnostics are complimentary measurements that image spots in close proximity on the target surface. Because the optical relay uses commercial glass, optical fibers’ axial positions are offset to compensate for chromatic aberrations. The optomechanical design requires careful attention to fiber management, mechanical assembly and disassembly, foam catchment design, and X-ray diagnostic field of view.Calibration and alignment data are archived at each assembly sequence stage. The photon budgets for the VISAR and PDV diagnostics are separately estimated.

  20. Designing interactive technology for crowd experiences - beyond sanitization

    DEFF Research Database (Denmark)

    Veerasawmy, Rune

    2014-01-01

    This dissertation concerns the topic on designing interactive technology for crowd expe- riences. It takes the outset in the experience-oriented design approach within interaction design, exploring the research question how can we conceptually understand and design interactive technology for crowd...... in a conceptual model of social experiences that presents crowd experiences as a distinct type of social experience. This is different from what previously have been explored within experi- ence-oriented design. This dissertation is composed of four research papers framed by an overview that summarizes...... experience within interaction design. This dissertation introduces an understanding of crowd experience as a distinct type of social experiences driven by non-rational behavior. This conceptual understanding is established in the intersection between sociological crowd theory and a pragmatist perspective...

  1. Measurement Design for Detecting Sparse Signals

    CERN Document Server

    Zahedi, Ramin; Chong, Edwin K P

    2011-01-01

    We consider the problem of testing for the presence (or detection) of an unknown sparse signal in additive white noise. Given a fixed measurement budget, much smaller than the dimension of the signal, we consider the general problem of designing compressive measurements to maximize the measurement signal-to-noise ratio (SNR), as increasing SNR improves the detection performance in a large class of detectors. We use a lexicographic optimization approach, where the optimal measurement design for sparsity level $k$ is sought only among the set of measurement matrices that satisfy the optimality conditions for sparsity level k-1. We consider optimizing two different SNR criteria, namely a worst-case SNR measure, over all possible realizations of a k-sparse signal, and an average SNR measure with respect to a uniform distribution on the locations of the up to k nonzero entries in the signal. We establish connections between these two criteria and certain classes of tight frames. We constrain our measurement matric...

  2. Experience economy meets business model design

    DEFF Research Database (Denmark)

    Gudiksen, Sune Klok; Smed, Søren Graakjær; Poulsen, Søren Bolvig

    2012-01-01

    companies automatically get a higher prize when offering an experience setting to the customer illustrated by the coffee example. Organizations that offer experiences still have an advantage but when an increasing number of organizations enter the experience economy the competition naturally gets tougher...

  3. Designing Experiments for Nonlinear Models - An Introduction

    OpenAIRE

    Johnson, Rachel T.; Montgomery, Douglas C.

    2009-01-01

    The article of record as published may be found at http://dx.doi.org/10.1002/qre.1063 We illustrate the construction of Bayesian D-optimal designs for nonlinear models and compare the relative efficiency of standard designs with these designs for several models and prior distributions on the parameters. Through a relative efficiency analysis, we show that standard designs can perform well in situations where the nonlinear model is intrinsically linear. However, if the model is non...

  4. Measuring Antineutrino Oscillations with the MINOS Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Evans, Justin John [Univ. of Oxford (United Kingdom)

    2008-09-01

    MINOS is a long baseline neutrino oscillation experiment. A manmade beam of predominantly muon neutrinos is detected both 1 km and 735 km from the production point by two functionally identical detectors. A comparison of the energy spectra measured by the two detectors shows the energy-dependent disappearance of muon neutrinos characteristic of oscillations and allows a measurement of the parameters governing the oscillations. This thesis presents work leading to measurements of disappearance in the 6% $\\bar{v}$μ background in that beam. A calibration is developed to correct for time-dependent changes in the responses of both detectors, reducing the corresponding uncertainty on hadronic energy measurements from 1.8% to 0.4% in the near detector and from 0.8% to 0.4% in the far detector. A method of selecting charged current $\\bar{v}$μ events is developed, with purities (efficiencies) of 96.5% (74.4%) at the near detector, and 98.8% (70.9%) at the far detector in the region below 10 GeV reconstructed antineutrino energy. A method of using the measured near detector neutrino energy spectrum to predict that expected at the far detector is discussed, and developed for use in the $\\bar{v}$μ analysis. Sources of systematic uncertainty contributing to the oscillation measurements are discussed. In the far detector, 32 charged current $\\bar{v}$μ events are observed below a reconstructed energy of 30 GeV, compared to an expectation of 47.8 for Δ$\\bar{m}$atm2 = Δ$\\bar{m}$atm2, sin2(2$\\bar{θ}$23) = sin2(2θ23). This deficit, in such a low-statistics sample, makes the result difficult to interpret in the context of an oscillation parameter measurement. Possible sources for the discrepancy are discussed, concluding that considerably more data are required for a definitive solution. Running MINOS with a dedicated $\\bar

  5. Active Ambiguity Reduction: An Experiment Design Approach to Tractable Qualitative Reasoning.

    Science.gov (United States)

    1987-04-20

    determining activity. envisionment and measurement interpretation. Importantly. the experiment engine is general and domain-independent and therefore...using a detailed example which uses qualitative reasoning tasks like determining activity, envisionment and measurement interpretation. Importantly...prediction and envisionment . measurement interpretation. design, and fault diagnosis and troubleshooting. This theory includes three strategies for designing

  6. Applying experience reports in design education: Challenges and ideas

    NARCIS (Netherlands)

    Pasman, G.J.; Romero Herrera, N.A.

    2013-01-01

    What if both design students and design tutors could have real-time insights into how students actually experience their design process rather than after-the-fact reflections? And what if these insights could be applied in ways that would contribute to more in-depth learning experiences? This paper

  7. Designing mobile experiences for collocated interaction

    OpenAIRE

    Lundgren, Sus; Fischer, Joel; Reeves, Stuart; Torgersson, Olof

    2015-01-01

    Many of our everyday social interactions involve mobile devices. Yet, these tend to only provide good support for distributed social interactions. Although much HCI and CSCW research has explored how we might support collocated, face-to-face situations using mobile devices, much of this work exists as isolated exemplars of technical systems and / or interaction designs. This paper draws on a range of such exemplars to develop a practical design framework intended for guiding the design of new...

  8. A methodical approach to performance measurement experiments : measure and measurement specification

    NARCIS (Netherlands)

    Hoeksema, F.W.; Veen, van der J.T.; Beijnum, van B.J.F.

    1997-01-01

    This report describes a methodical approach to performance measurement experiments. This approach gives a blueprint for the whole trajectory from the notion of performance measures and how to define them via planning, instrumentation and execution of the experiments to interpretation of the results.

  9. A Methodical Approach to Performance Measurement Experiments: Measure and Measurement Specification

    NARCIS (Netherlands)

    Hoeksema, F.W.; van der Veen, Johan (CTIT); van Beijnum, Bernhard J.F.

    1997-01-01

    This report describes a methodical approach to performance measurement experiments. This approach gives a blueprint for the whole trajectory from the notion of performance measures and how to define them via planning, instrumentation and execution of the experiments to interpretation of the results.

  10. Design Experiments and the Generation of Theory

    DEFF Research Database (Denmark)

    Nortvig, Anne-Mette

    2014-01-01

    When blended learning is introduced in professional education with strong traditions of physical activities and face-to-face interactions in the classroom, creation of new learning designs is needed both in the classroom and online. While some educators see the implementation of e...... methodology (DBR) and a participatory design approach was used in a case in physiotherapy education from the beginning of the implementation of e-learning in order to create learning designs for the new teaching context and generate theory in relation to this. Ict-based learning designs were created...

  11. The Gamma Astrometric Measurement Experiment (GAME)

    Science.gov (United States)

    Gai, Mario; Vecchiato, Alberto; Ligori, Sebastiano; Fineschi, Silvano; Lattanzi, Mario G.

    2009-08-01

    The GAME mission concept is aimed at very precise measurement of the gravitational deflection of light by the Sun, by an optimized telescope in the visible and launched in orbit on a small class satellite. The targeted precision on the γ parameter of the Parametrized Post-Newtonian formulation of General Relativity is 10-6 or better, i.e. one to two orders of magnitude better than the best current results. Such precision is suitable to detect possible deviations from unity value, associated to generalized Einstein models for gravitation, with potentially huge impacts on the cosmological distribution of dark matter and dark energy. The measurement principle is based on differential astrometric signature on the stellar positions, i.e. on the spatial component of the effect rather than the temporal component as in recent experiments using radio link delay timing. Exploiting the observation strategy, it is also possible to target other interesting scientific goals both in the realm of General Relativity and in the observations of extrasolar systems. The instrument is a dual field, multiple aperture Fizeau interferometer, observing simultaneously two regions close to the Solar limb. The diluted optics approach is selected for efficient rejection of the solar radiation, while retaining an acceptable angular resolution on the science targets. We describe the science motivation, the proposed mission profile, the payload concept and the expected performance from recent results.

  12. Designing Effective Research Experiences for Undergraduates (Invited)

    Science.gov (United States)

    Jones Whyte, P.; Dalbotten, D. M.

    2009-12-01

    The undergraduate research experience has been recognized as a valuable component of preparation for graduate study. As competition for spaces in graduate schools become more keen students benefit from a formal introduction to the life of a scholar. Over the last twenty years a model of preparing students for graduate study with the research experience as the base has been refined at the University of Minnesota. The experience includes assignment with a faculty member and a series of seminars that support the experience. The seminars cover topics to include academic writing, scholarly literature review, writing of the abstract, research subject protection protocols, GRE test preparation, opportunities to interact with graduate student, preparing the graduate school application, and preparation of a poster to demonstrate the results of the research. The next phase of the process is to determine the role of the undergraduate research experience in the graduate school admission process.

  13. Computation for the analysis of designed experiments

    CERN Document Server

    Heiberger, Richard

    2015-01-01

    Addresses the statistical, mathematical, and computational aspects of the construction of packages and analysis of variance (ANOVA) programs. Includes a disk at the back of the book that contains all program codes in four languages, APL, BASIC, C, and FORTRAN. Presents illustrations of the dual space geometry for all designs, including confounded designs.

  14. An Architectural Experience for Interface Design

    Science.gov (United States)

    Gong, Susan P.

    2016-01-01

    The problem of human-computer interface design was brought to the foreground with the emergence of the personal computer, the increasing complexity of electronic systems, and the need to accommodate the human operator in these systems. With each new technological generation discovering the interface design problems of its own technologies, initial…

  15. An Architectural Experience for Interface Design

    Science.gov (United States)

    Gong, Susan P.

    2016-01-01

    The problem of human-computer interface design was brought to the foreground with the emergence of the personal computer, the increasing complexity of electronic systems, and the need to accommodate the human operator in these systems. With each new technological generation discovering the interface design problems of its own technologies, initial…

  16. Designing Technology for Active Spectator Experiences at Sporting Events

    DEFF Research Database (Denmark)

    Veerasawmy, Rune; Ludvigsen, Martin

    is not merely an experience of receiving and consuming entertainment. It is also heavily reliant on the active participation of the spectator in creating the atmosphere of the entire event. The BannerBattle experiment provides interactive technology in sport arenas with a form of interaction based on existing......This paper explores the active spectator experience at sporting events, by presenting and reflecting upon a design experiment carried out at a number of football1 events. The initial hypothesis of the design process, leading to the design experiment has been that the spectator experience...... behaviour in the context. The work presented also argues for a need to overcome the inclination to designing technological systems that imitate or compete with the experience of watching the television broadcast of the game. Experiments such as the presented BannerBattle are cornerstones in our exploratory...

  17. Patients' experiences and opinions of home blood pressure measurement.

    Science.gov (United States)

    Rickerby, J; Woodward, J

    2003-07-01

    Regular measurement of the blood pressure (BP) is necessary to monitor the treatment of hypertension, and self-measurement is one technique of obtaining such measurements. The aim of this study was to investigate the experiences of individuals who have carried out home BP measurement. A qualitative method using semistructured interviews was used with 13 subjects. These were adults with hypertension who had previous experience of measuring their own BP, and were recruited to the study from one UK general medical practice. Interviews were recorded and transcribed, and data from the interviews have been analysed using phenomenological principles and identifying 'meaning units.' The findings suggest that participants were willing to carry out home measurements and several were pleased to have been asked to be more involved in their own management. All found the technique straightforward. Most noted marked variability in the day-to-day BP measurements. Several exhibited the 'white coat' phenomenon (spuriously raised BP in certain settings only). Some participants showed considerable know-ledge of hypertension and its consequences. They reported being aware of their own BP level and whether this was within acceptable limits. They also reported being willing to take further measurements, and to consider adjusting their treatment in the light of these measurements. Other participants showed less knowledge and enthusiasm, and considered the management of hypertension to be the doctor's job. The findings suggest that for some individuals home BP measurement is acceptable. They also help to explain why, for some individuals, it is not. Using the findings, a number of changes to current practice could be made, which might make home measurements more acceptable and easier to perform. As a result, a new proforma for use in everyday practice has been designed. The study shows that there is considerable scope for sharing BP measurement and management decisions in hypertension with

  18. Design and implementation of virtual aerial photography measurement experiment system%虚拟航空摄影测量实验系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    梅晓丹; 王晓宇; 丁乾坤; 李传磊; 苗奇峰; 曲平路; 张忠霖

    2015-01-01

    With the development of network teaching , virtual technology teaching for experimental teaching ,which can strengthen the laboratory construction and reforming experiment teaching methods ,is an important development direction .This paper introduces the virtual modeling and development software , w hich elaborates the specific process of the virtual aerial photography measurement system design and implementation and builds the virtual aerial photography measurement system by using VRML software primarily with three‐dimensional modeling software SkecthUP and 3Ds Max .The system mainly includes virtual landform sand table(virtual campus model and virtual grid terrain) ,virtual digital photogrammetric workstation model , virtual unmanned aerial vehicle and control orbit dynamic model , and the virtual laboratory . It realizes virtual aerial photography measurement system’s main function :digital photogrammetric workstation dynamic demonstration operation ,unmanned aircraft aerial survey operation demonstration and visit to laboratory and demonstration and so on .T he result of the study has effectively improved the photogrammetry experiment teaching quality because it has no physical laboratory space and time limit w hich is helpful for students to develop independent learning . It has a certain reference significance for the virtual experiment system for research and development .%随着网络教学的兴起,虚拟现实技术用于实验教学,成为强化实验室建设、改革实验教学手段的一个重要发展方向。介绍虚拟建模和开发软件,并以我院仿真模拟摄影测量与遥感实验室为原型,采用V RM L软件为主,三维建模软件SkecthUP和3Ds Max为辅,阐述系统设计与实现的具体过程,构建虚拟航空摄影测量实验系统。该系统主要包括虚拟地形地貌沙盘(虚拟校园模型和虚拟栅格地形)、虚拟全数字摄影测量工作站模型、虚拟无人机和控制轨道动态

  19. A Photogate Design for Air Track Experiments.

    Science.gov (United States)

    Hinrichsen, P. F.

    1988-01-01

    Introduces a photogate arrangement using a photo-reflective sensor for air track experiments. Reports that the sensitivity to sunlight can be eliminated and a mechanically more convenient package produced. Shows the mounting, circuit, and usage of the photogate. (YP)

  20. A methodical approach to performance measurement experiments : measure and measurement specification

    OpenAIRE

    Hoeksema, F.W.; Veen,, A. m.; Beijnum, van, B.J.F.

    1997-01-01

    This report describes a methodical approach to performance measurement experiments. This approach gives a blueprint for the whole trajectory from the notion of performance measures and how to define them via planning, instrumentation and execution of the experiments to interpretation of the results. The first stage of the approach, Measurement Initialisation, has been worked out completely. It is shown that a well-defined system description allows a procedural approach to defining performance...

  1. The Design, Experience and Practice of Networked Learning

    DEFF Research Database (Denmark)

    Gleerup, Janne; Heilesen, Simon; Helms, Niels Henrik

    2014-01-01

    . The Design, Experience and Practice of Networked Learning will prove indispensable reading for researchers, teachers, consultants, and instructional designers in higher and continuing education; for those involved in staff and educational development, and for those studying post graduate qualifications...

  2. Statistical Analysis of Designed Experiments Theory and Applications

    CERN Document Server

    Tamhane, Ajit C

    2012-01-01

    A indispensable guide to understanding and designing modern experiments The tools and techniques of Design of Experiments (DOE) allow researchers to successfully collect, analyze, and interpret data across a wide array of disciplines. Statistical Analysis of Designed Experiments provides a modern and balanced treatment of DOE methodology with thorough coverage of the underlying theory and standard designs of experiments, guiding the reader through applications to research in various fields such as engineering, medicine, business, and the social sciences. The book supplies a foundation for the

  3. 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.

  4. User experience (UX) design for libraries

    CERN Document Server

    Schmidt, Aaron

    2012-01-01

    This book shows you how to get there by providing hands-on steps and best practices for UX design principles, practices, and tools to engage with patrons online and build the best web presence for your library.

  5. Design Experiments and the Generation of Theory

    DEFF Research Database (Denmark)

    Nortvig, Anne-Mette

    2014-01-01

    When blended learning is introduced in professional education with strong traditions of physical activities and face-to-face interactions in the classroom, creation of new learning designs is needed both in the classroom and online. While some educators see the implementation of e-learning and bl...... be rewarding to couple DBR with a grounded theory approach in order to be able both to capture the data that emerge in a project that follows its own agenda and to generate theory on a context that is changing....... methodology (DBR) and a participatory design approach was used in a case in physiotherapy education from the beginning of the implementation of e-learning in order to create learning designs for the new teaching context and generate theory in relation to this. Ict-based learning designs were created...

  6. Designing the user experience of game development tools

    CERN Document Server

    Lightbown, David

    2015-01-01

    The Big Green Button My Story Who Should Read this Book? Companion Website and Twitter Account Before we BeginWelcome to Designing the User Experience of Game Development ToolsWhat Will We Learn in This Chapter?What Is This Book About?Defining User ExperienceThe Value of Improving the User Experience of Our ToolsParallels Between User Experience and Game DesignHow Do People Benefit From an Improved User Experience?Finding the Right BalanceWrapping UpThe User-Centered Design ProcessWhat Will We

  7. Prospects for an experiment to measure at the CERN SPS

    Science.gov (United States)

    Moulson, M.

    2017-01-01

    Precise measurements of the branching ratios for the decays can provide unique constraints on CKM unitarity and, potentially, evidence for new physics. It is important to measure both decay modes, and , since different new physics models affect the rates for each channel differently. We are investigating the feasibility of performing a measurement of using a high-energy secondary neutral beam at the CERN SPS in a successor experiment to NA62. The planned experiment would reuse some of the NA62 infrastructure, including possibly the NA48 liquid-krypton calorimeter. The mean momentum of mesons decaying in the fiducial volume is 70 GeV; the decay products are boosted forward, so that less demanding performance is required from the large-angle photon veto detectors. On the other hand, the layout poses particular challenges for the design of the small-angle vetoes, which must reject photons from decays escaping through the beam pipe amidst an intense background from soft photons and neutrons in the beam. We present some preliminary conclusions from our feasibility studies, summarizing the design challenges faced and the sensitivity obtainable for the measurement of .

  8. 棉秆田间起拔力测量系统设计与试验%Design and field experiment of drawing resistance measurement system for cotton stalk

    Institute of Scientific and Technical Information of China (English)

    李怡; 张国忠; 周勇; 汲文峰; 李兆东; 张翼翔; 翟康毅

    2013-01-01

    mechanization technology research in recent years. In order to study the influence of factors such as soil, cotton stalk diameter, and draft angle on the stalk drawing resistance, a set of real-time drawing resistance measurement programs for cotton stalk was designed based on virtual instrument technology, and a kind of adjustable motor drawing device for cotton stalk was developed. The stalk draft resistance was tested with the system, which consisted of the software and the device. The system was programmed with LabVIEW graphical editor language to automate data collection and reading, data analysis and computing, real-time display, and archival. The drawing device was made up of a pair of drawing clips, a drawing sleeve, a tension sensor, a drawing rod, a reel, a wire rope, a frame, a pulley, and a support frame. The universal material mechanical performance testing machine was used to calibrate the drawing resistance measurement system. Experimental results showed that the measurement system was able to accurately measure the output signal of the tension sensor, with a maximum error was 0.405%between the output load from universal testing machine and the input load from measurement program, which had a high value for practical application. The field experiments of pulling the cotton stalks were conducted in the experimental field of Huazhong Agricultural University. The row spacing of cotton stalks in this experimental plot was 800 mm, and the plant spacing was about 450mm. The experiments were conducted during the period of January to March in 2013. The field experiments of pulling the cotton stalks involved variable soil moisture (26.93%, 28.13%, and 25.44%), cotton root diameter, draft angle (30°, 40°, and 50°), and draft speed (9.42 mm/s and 6.28 mm/s) as influencing factors. The stalk branches were excised and the main stalk was reserved with length of 300 mm before the experiments. After putting the stalk into the drawing sleeve and locking onto it, the stepper

  9. Ocular microtremor measurement system: design and performance.

    Science.gov (United States)

    Sheahan, N F; Coakley, D; Hegarty, F; Bolger, C; Malone, J

    1993-05-01

    The frequency of ocular microtremor (OMT) is related to the functional status of the brain stem, and thus OMT may be useful in the diagnosis and management of brain stem disorders. The paper discusses the design of an OMT measurement system and reports quantitative specifications for three portable systems. All systems use a piezo-electric element as the transducer, which measures the displacement of the sclera during eye rotations. The systems differ in the manner in which the signal is recorded. All systems can detect eye movements corresponding to displacements of the sclera ranging from 12 to over 3000 nm. The frequency responses of all systems are flat (< 2 dB deviation from peak response) between 20 and 150 Hz. The phase response shows deviations (< pi) at the extremes of this range, but qualitative comparison of input and measured signals demonstrates that phase distortion is not excessive. Thus all systems are acceptable for clinical studies involving OMT.

  10. Hypersonic drone vehicle design: A multidisciplinary experience

    Science.gov (United States)

    1988-01-01

    UCLA's Advanced Aeronautic Design group focussed their efforts on design problems of an unmanned hypersonic vehicle. It is felt that a scaled hypersonic drone is necesary to bridge the gap between present theory on hypersonics and the future reality of the National Aerospace Plane (NASP) for two reasons: (1) to fulfill a need for experimental data in the hypersonic regime, and (2) to provide a testbed for the scramjet engine which is to be the primary mode of propulsion for the NASP. The group concentrated on three areas of great concern to NASP design: propulsion, thermal management, and flight systems. Problem solving in these areas was directed toward design of the drone with the idea that the same design techniques could be applied to the NASP. A 70 deg swept double-delta wing configuration, developed in the 70's at the NASA Langley, was chosen as the aerodynamic and geometric model for the drone. This vehicle would be air launched from a B-1 at Mach 0.8 and 48,000 feet, rocket boosted by two internal engines to Mach 10 and 100,000 feet, and allowed to cruise under power of the scramjet engine until burnout. It would then return to base for an unpowered landing. Preliminary energy calculations based on flight requirements give the drone a gross launch weight of 134,000 pounds and an overall length of 85 feet.

  11. Designing interactive technology for crowd experiences - beyond sanitization

    DEFF Research Database (Denmark)

    Veerasawmy, Rune

    2014-01-01

    experience within interaction design. This dissertation introduces an understanding of crowd experience as a distinct type of social experiences driven by non-rational behavior. This conceptual understanding is established in the intersection between sociological crowd theory and a pragmatist perspective...... sanitization. The domain of my experimental design inquiries is at sporting events. From extensive theoretical studies and my empirical explorations I present a perspective on modern and professionalized sporting events as sanitized, where the spectator experiences and technology are being produced, controlled......This dissertation concerns the topic on designing interactive technology for crowd expe- riences. It takes the outset in the experience-oriented design approach within interaction design, exploring the research question how can we conceptually understand and design interactive technology for crowd...

  12. TEACHING SOFTWARE FOR DESIGNING OF EXPERIMENTS (DOE IN WOODWORKING PROCESSES

    Directory of Open Access Journals (Sweden)

    Wilhelm LAURENZI

    2015-12-01

    Full Text Available This paper presents a teaching software that allows students and researchers to understand how passive and active experiments can be made, without making real experiments. The software generates experimental data for a wooden milling process based on an experimental design for two factors, y=f(x1, x2. The data pass through different modules which simulate a data acquisition system that convert the analog simulated data into digital data which are recorded into text files. The software has five modules: a process module, a current transformer module, a power transducer module, a data acquisition module and a file saving module. The interface of the software follows these modules and allows the user to set very easily the input and output values of every module. After simulation of all experiments and processing the recorded data, the experimental design can be completed with the measured values. With this information and with adequate software, a mathematical model of the process can be obtained very easily.

  13. Designing experiments to discriminate families of logic models

    Directory of Open Access Journals (Sweden)

    Santiago eVidela

    2015-09-01

    Full Text Available Logic models of signaling pathways are a promising way of building effective in silico functional models of a cell, in particular of signaling pathways. The automated learning of Boolean logic models describing signaling pathways can be achieved by training to phosphoproteomics data, which is particularly useful if it is measured upon different combinations of perturbations in a high-throughput fashion. However, in practice the number and type of allowed perturbations is not exhaustive. Moreover, experimental data is unavoidably subject to noise. As a result, the learning process results in a family of feasible logical networks rather than in a single model. This family is composed of logic models implementing different internal wirings for the system and therefore the predictions of experiments from this family may present a significant level of variability, and hence uncertainty.In this paper, we introduce a method based on Answer Set Programming to propose an optimal experimental design that aims to narrow down the variability (in terms of input-output behaviors within families of logical models learned from experimental data. We study how the fitness with respect to the data can be improved after an optimal selection of signaling perturbations and how we learn optimal logic models with minimal number of experiments. The methods are applied on signaling pathways in human liver cells and phosphoproteomics experimental data. Using 25% of the experiments we obtained logical models with fitness scores (mean square error 15% close to the ones obtained using all experiments, illustrating the impact that our approach can have on the design of experiments for efficient model calibration.

  14. Workspace design for crane cabins applying a combined traditional approach and the Taguchi method for design of experiments.

    Science.gov (United States)

    Spasojević Brkić, Vesna K; Veljković, Zorica A; Golubović, Tamara; Brkić, Aleksandar Dj; Kosić Šotić, Ivana

    2016-01-01

    Procedures in the development process of crane cabins are arbitrary and subjective. Since approximately 42% of incidents in the construction industry are linked to them, there is a need to collect fresh anthropometric data and provide additional recommendations for design. In this paper, dimensioning of the crane cabin interior space was carried out using a sample of 64 crane operators' anthropometric measurements, in the Republic of Serbia, by measuring workspace with 10 parameters using nine measured anthropometric data from each crane operator. This paper applies experiments run via full factorial designs using a combined traditional and Taguchi approach. The experiments indicated which design parameters are influenced by which anthropometric measurements and to what degree. The results are expected to be of use for crane cabin designers and should assist them to design a cabin that may lead to less strenuous sitting postures and fatigue for operators, thus improving safety and accident prevention.

  15. Evolutionary experience design – the case of Otopia

    DEFF Research Database (Denmark)

    Hansen, Kenneth

    used as a means of specifying the basic immaterial design form. This discussion leads to the suggestion of a rule-based evolutionary model for the design of situations as a practical option for designers of new spectator oriented experiences in the future The project of Otopia was supported......The design of experiences is a complicated challenge. It might not even be possible to design such a “thing”, but only to design for it. If this is the case it could seem appropriate with an evolutionary approach. This paper introduces such an approach to the design of new public oriented...... experiences with the case of “Otopia”. “Otopia” is a large scale, new media experiment, which combines the areas of computer games, sports and performance in to a spectator oriented concept; it was premiered in a dome tent at the Roskilde Festival in Denmark the summer 2005. This paper presents and discusses...

  16. Modal identification experiment design for large space structures

    Science.gov (United States)

    Kim, Hyoung M.; Doiron, Harold H.

    1991-01-01

    This paper describes an on-orbit modal identification experiment design for large space structures. Space Station Freedom (SSF) systems design definition and structural dynamic models were used as representative large space structures for optimizing experiment design. Important structural modes of study models were selected to provide a guide for experiment design and used to assess the design performance. A pulsed random excitation technique using propulsion jets was developed to identify closely-spaced modes. A measuremenat location selection approach was developed to estimate accurate mode shapes as well as frequencies and damping factors. The data acquisition system and operational scenarios were designed to have minimal impacts on the SSF. A comprehensive simulation was conducted to assess the overall performance of the experiment design.

  17. Designing Learning Experiences for Deeper Understanding

    Science.gov (United States)

    Stripling, Barbara K.; Harada, Violet H.

    2012-01-01

    Planning is the less visible part of the teaching and learning process; however, it serves as the blueprint for student learning. To conceptualize the unit or project as a holistic learning experience, the authors created the C.L.E.A.R. G.O.A.L.S. guidelines that address the major elements of unit planning. An essential step is identifying the…

  18. Interdisciplinary parametric design: the XXL experience

    NARCIS (Netherlands)

    Turrin, M.; Sariyildiz, I.S.; Paul, J.C.

    2015-01-01

    Focusing on large span structures for sport buildings, the paper tackles the role of parametric modelling and performance simulations, to enhance the integration between architectural and engineering design. The general approach contrasts post-engineering processes. In post-engineering, technical pe

  19. Carbon Pricing: Design, Experiences and Issues

    DEFF Research Database (Denmark)

    , which has negative implications for the future of our environment. In light of these negative developments, it is important to understand the benefits of environmental sustainability through well-documented research. This discerning book considers the design of carbon taxes and examines...

  20. Hypersonic drone design: A multidisciplinary experience

    Science.gov (United States)

    1988-01-01

    Efforts were focused on design problems of an unmanned hypersonic vehicle. It is felt that a scaled hypersonic drone is necessary to bridge the gap between present theory on hypersonics and the future reality of the National Aerospace Plane (NASP) for two reasons: to fulfill a need for experimental data in the hypersonic regime, and to provide a testbed for the scramjet engine which is to be the primary mode of propulsion for the NASP. Three areas of great concern to NASP design were examined: propulsion, thermal management, and flight systems. Problem solving in these areas was directed towards design of the drone with the idea that the same design techniques could be applied to the NASP. A seventy degree swept double delta wing configuration, developed in the 70's at NASA Langley, was chosen as the aerodynamic and geometric model for the drone. This vehicle would be air-launched from a B-1 at Mach 0.8 and 48,000 feet, rocket boosted by two internal engines to Mach 10 and 100,000 feet, and allowed to cruise under power of the scramjet engine until burnout. It would then return to base for an unpowered landing. Preliminary energy calculations based upon the flight requirements give the drone a gross launch weight of 134,000 lb. and an overall length of 85 feet.

  1. Interdisciplinary parametric design: the XXL experience

    NARCIS (Netherlands)

    Turrin, M.; Sariyildiz, I.S.; Paul, J.C.

    2015-01-01

    Focusing on large span structures for sport buildings, the paper tackles the role of parametric modelling and performance simulations, to enhance the integration between architectural and engineering design. The general approach contrasts post-engineering processes. In post-engineering, technical

  2. Design and field experiment of power consumption measurement system for high stubble returning and tillage machine%高茬秸秆还田耕整机功耗检测系统设计与试验

    Institute of Scientific and Technical Information of China (English)

    张居敏; 贺小伟; 夏俊芳; 张顺; 翟建波; 桂鹏; 张彪

    2014-01-01

    important technical parameter to consider the overall performance, directly affecting the overall performance. The actual power consumption was undefined; the relationships between motion parameters of helical rotary blade roller and power consumption were uncertain. In order to detect the power consumption of high stubble returning and tillage machine during the working process in fields, the real-time measurement system for rotary speed, torque and power consumption was designed based on virtual instrument technology. The torque and rotary speed of rotary knife roller were measured by the CKY-810 dynamic torque sensor and inductance proximity switch, respectively. Meanwhile, the power consumption was shown in real time by the measurement system processing. Calibration testing results showed that the maximum absolute torque error was 5.367 N·m, the corresponding relative error was 0.27%, the maximum absolute speed error was 0.261 r/min, and the corresponding relative error is 0.073%. It indicated that the power consumption test system could accurately detect torque, speed signal, and thereby detect dynamic power consumption. Using the high stubble returning and tillage machine with real-time measurement system in both paddy and dry fields, and the field experiment on power consumption was conducted in the dry late rice fields. Three main factors affecting the power consumption including the tillage depth, rotary speed of knife roller, and the forward speed of the machine were evaluated with the L9(34) orthogonal test. The different forward speeds corresponding to tractor gears were measured before the experiment. At the same time, the relationship between tillage depth and height adjustable of hydraulic regulating handle was clear. The tillage depth and rotary speed of knife roller as well as the forward speed of the machine were nearly obtained by adjusting gears, accelerator and hydraulic regulating handle of the Dong-Fanghong LX-954 tractor, and the final values of the

  3. The Role of Fiction in Experiments within Design, Art & Architecture

    DEFF Research Database (Denmark)

    Knutz, Eva; Markussen, Thomas; Christensen, Poul Rind

    2013-01-01

    This paper offers a typology for understanding design fiction as a new approach in design research. The typology allows design researchers to explain design fictions according to 5 criteria: (1) “What if scenarios” as the basic construal principle of design fiction; (2) the manifestation...... of critique; (3) design aims; (4) materializations and forms; and (5) the aesthetic of design fictions. The typology is premised on the idea that fiction may integrate with reality in many different ways in design experiments. The explanatory power of the typology is exemplified through the analyses of 6 case...

  4. Evolutionary experience design – the case of Otopia

    DEFF Research Database (Denmark)

    Hansen, Kenneth

    The design of experiences is a complicated challenge. It might not even be possible to design such a “thing”, but only to design for it. If this is the case it could seem appropriate with an evolutionary approach. This paper introduces such an approach to the design of new public oriented...... the overall development and design of the concept. First, the project is introduced and a model of the concept is outlined. Then the basic design objects are presented and a discussion of their various forms is initiated. Special attention is given here to the way the evolutionary design of rules has been...... used as a means of specifying the basic immaterial design form. This discussion leads to the suggestion of a rule-based evolutionary model for the design of situations as a practical option for designers of new spectator oriented experiences in the future The project of Otopia was supported...

  5. Working Group 5: Measurements technology and active experiments

    Science.gov (United States)

    Whipple, E.; Barfield, J. N.; Faelthammar, C.-G.; Feynman, J.; Quinn, J. N.; Roberts, W.; Stone, N.; Taylor, W. L.

    1986-01-01

    Technology issues identified by working groups 5 are listed. (1) New instruments are needed to upgrade the ability to measure plasma properties in space. (2) Facilities should be developed for conducting a broad range of plasma experiments in space. (3) The ability to predict plasma weather within magnetospheres should be improved and a capability to modify plasma weather developed. (4) Methods of control of plasma spacecraft and spacecraft plasma interference should be upgraded. (5) The space station laboratory facilities should be designed with attention to problems of flexibility to allow for future growth. These issues are discussed.

  6. Experiences with Voice to Design Ceramics

    DEFF Research Database (Denmark)

    Hansen, Flemming Tvede; Jensen, Kristoffer

    2013-01-01

    This article presents SoundShaping, a system to create ceramics from the human voice and thus how digital technology makes new possibilities in ceramic craft. The article is about how experiential knowledge that the craftsmen gains in a direct physical and tactile interaction with a responding....... The shape is output to a 3D printer to make ceramic results. The system demonstrates the close connection between digital technology and craft practice. Several experiments and reflections demonstrate the validity of this work....

  7. Experiences with voice to design ceramics

    DEFF Research Database (Denmark)

    Hansen, Flemming Tvede; Jensen, Kristoffer

    2014-01-01

    This article presents SoundShaping, a system to create ceramics from the human voice and thus how digital technology makes new possibilities in ceramic craft. The article is about how experiential knowledge that the craftsmen gains in a direct physical and tactile interaction with a responding....... The shape is output to a 3D printer to make ceramic results. The system demonstrates the close connection between digital technology and craft practice. Several experiments and reflections demonstrate the validity of this work....

  8. Designing for user experiences in specific contexts: contributions from contextmapping

    NARCIS (Netherlands)

    Schifferstein, H.N.J.; Sleeswijk Visser, F.

    2013-01-01

    In saturated consumer markets, consumer choices often depend on subtle product differences that contribute positively to their user experiences. Hence, it is important for designers to be able to create products that elicit different experiences. In this chapter we discuss a design approach that tak

  9. Best Practices for Operando Battery Experiments: Influences of X-ray Experiment Design on Observed Electrochemical Reactivity

    Energy Technology Data Exchange (ETDEWEB)

    Borkiewicz, O. J.; Wiaderek, Kamila M.; Chupas, Peter J.; Chapman, Karena W.

    2015-06-04

    Dynamic properties and multiscale complexities governing electrochemical energy storage in batteries are most ideally interrogated under simulated operating conditions within an electrochemical cell. We assess how electrochemical reactivity can be impacted by experiment design, including the X-ray measurements or by common features or adaptations of electrochemical cells that enable X-ray measurements.

  10. Design of computerized unbalance measuring system

    Energy Technology Data Exchange (ETDEWEB)

    Karunakara, K.; Nambudiri, P.V.V.; Aradhya, S.; Kumar, E.M.; Channakeshava [Central Power Research Inst., Bangalore (India)

    1995-12-31

    In complex network, the connected loads may be of single phase or three phase. Increased trend of traction loads, Arc furnace load and thyristor devices necessitates check for voltage quality. Harmonics, flicker and unbalance are some of the factors influencing the voltage quality. Evaluation of voltage quality and applying correction, if required, are to be made depending upon the situation prevailing in the system. Under certain load conditions like arc furnace, traction and thyristor devices, the unbalance factor may vary every few cycles and for the unbalance correction, devices like static Var compensator (SVC) have to be used. These correcting devices have some time lag to effect corrections, thus measurement based on short time information will not give the true picture. To avoid erroneous conclusions from the short term data, an instrument based on an integrated value over fairly long duration was designed and fabricated by CPRI. This paper discusses about the design and calibration of the instrument and presents typical measured data on an electrical system by using this instrument.

  11. The DESI Experiment Part II: Instrument Design

    OpenAIRE

    DESI Collaboration; Aghamousa, Amir; Aguilar, Jessica; Ahlen, Steve; Alam, Shadab; Allen, Lori E.; Prieto, Carlos Allende; Annis, James; Bailey, Stephen; Balland, Christophe; Ballester, Otger; Baltay, Charles; Beaufore, Lucas; Bebek, Chris; Beers, Timothy C.

    2016-01-01

    DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey. The DESI instrument is a robotically-actuated, fiber-fed spectrograph capable of taking up to 5,000 simultaneous spectra over a wavelength range from 360 nm to 980 nm. The fibers feed ten three-arm spectrographs with resolution $R= \\lambda/\\Delta...

  12. Student designed experiments to learn fluids

    Science.gov (United States)

    Stern, Catalina

    2013-11-01

    Lasers and high speed cameras are a wonderful tool to visualize the very complex behavior of fluids, and to help students grasp concepts like turbulence, surface tension and vorticity. In this work we present experiments done by physics students in their senior year at the School of Science of the National University of Mexico as a final project in the continuum mechanics course. Every semester, the students make an oral presentation of their work and videos and images are kept in the web page ``Pasión por los Fluidos''. I acknowledge support from the Physics Department of Facultad de Ciencias, Universidad Nacional Autónoma de México.

  13. Relaying experiences for care home design

    DEFF Research Database (Denmark)

    Raudaskoski, Pirkko Liisa

    2014-01-01

    stakeholders (researchers, family members, etc.) could put forward their ideas and wishes about the facilities of a soon-to-be-built care home for people with brain injury. In other words, the seminar was part of a wider diagnostic endeavor that was to be started in a specially designed building. The future......The paper discusses organizational planning and decision making as situated material-semiotic practices in which various local and non-local meaningful elements (e.g. texts and photos) are invocated and resemiotized. The discussion is based on an analysis of a seminar meeting where different...

  14. Roles in Innovative Software Teams: A Design Experiment

    Science.gov (United States)

    Aaen, Ivan

    With inspiration from role-play and improvisational theater, we are developing a framework for innovation in software teams called Essence. Based on agile principles, Essence is designed for teams of developers and an onsite customer. This paper reports from teaching experiments inspired by design science, where we tried to assign differentiated roles to team members. The experiments provided valuable insights into the design of roles in Essence. These insights are used for redesigning how roles are described and conveyed in Essence.

  15. Simulation Data Management for Adaptive Design Of Experiment

    OpenAIRE

    BLONDET, Gaëtan; BOUDAOUD, Nassim; LE DUIGOU, Julien

    2015-01-01

    International audience; Recent evolutions of computer-aided product development and massive integration of numerical simulations to the design process require new methodologies to decrease the computational costs. Numerical design of experiments is used to increase quality of products by taking into account uncertainties in product development. But, this method can be time-consuming and involves a high computational cost. This paper presents a literature review of design of experiments method...

  16. Design of a Microgravity Spray Cooling Experiment

    Science.gov (United States)

    Baysinger, Kerri M.; Yerkes, Kirk L.; Michalak, Travis E.; Harris, Richard J.; McQuillen, John

    2004-01-01

    An analytical and experimental study was conducted for the application of spray cooling in a microgravity and high-g environment. Experiments were carried out aboard the NASA KC-135 reduced gravity aircraft, which provided the microgravity and high-g environments. In reduced gravity, surface tension flow was observed around the spray nozzle, due to unconstrained liquid in the test chamber and flow reversal at the heat source. A transient analytical model was developed to predict the temperature and the spray heat transfer coefficient within the heated region. Comparison of the experimental transient temperature variation with analytical results showed good agreement for low heat input values. The transient analysis also verified that thermal equilibrium within the heated region could be reached during the 20-25s reduced gravity portion of the flight profile.

  17. On the design of closed recapture experiments.

    Science.gov (United States)

    Alunni Fegatelli, Danilo; Farcomeni, Alessio

    2016-11-01

    We propose a method to plan the number of occasions of recapture experiments for population size estimation. We do so by fixing the smallest number of capture occasions so that the expected length of the profile confidence interval is less than or equal to a fixed threshold. In some cases, we solve the optimization problem in closed form. For more complex models we use numerical optimization. We detail models assuming homogeneous, time-varying, subject-specific capture probabilities, behavioral response to capture, and combining behavioral response with subject-specific effects. The principle we propose can be extended to plan any other model specification. We formally show the validity of the approach by proving distributional convergence. We illustrate with simulations and challenging examples in epidemiology and ecology. We report that in many cases adding as few as two sampling occasions may substantially reduce the length of confidence intervals.

  18. Experiences with Voice to Design Ceramics

    DEFF Research Database (Denmark)

    Hansen, Flemming Tvede; Jensen, Kristoffer

    2013-01-01

    This article presents SoundShaping, a system to create ceramics from the human voice and thus how digital technology makes new possibilities in ceramic craft. The article is about how experiential knowledge that the craftsmen gains in a direct physical and tactile interaction with a responding ma....... The shape is output to a 3D printer to make ceramic results. The system demonstrates the close connection between digital technology and craft practice. Several experiments and reflections demonstrate the validity of this work....... material can be transformed and utilized in the use of digital technologies. SoundShaping is based on a generic audio feature extraction system and the principal component analysis to ensure that the pertinent information in the voice is used. Moreover, 3D shape is created using simple geometric rules...

  19. Design and optimization of reverse-transcription quantitative PCR experiments.

    Science.gov (United States)

    Tichopad, Ales; Kitchen, Rob; Riedmaier, Irmgard; Becker, Christiane; Ståhlberg, Anders; Kubista, Mikael

    2009-10-01

    Quantitative PCR (qPCR) is a valuable technique for accurately and reliably profiling and quantifying gene expression. Typically, samples obtained from the organism of study have to be processed via several preparative steps before qPCR. We estimated the errors of sample withdrawal and extraction, reverse transcription (RT), and qPCR that are introduced into measurements of mRNA concentrations. We performed hierarchically arranged experiments with 3 animals, 3 samples, 3 RT reactions, and 3 qPCRs and quantified the expression of several genes in solid tissue, blood, cell culture, and single cells. A nested ANOVA design was used to model the experiments, and relative and absolute errors were calculated with this model for each processing level in the hierarchical design. We found that intersubject differences became easily confounded by sample heterogeneity for single cells and solid tissue. In cell cultures and blood, the noise from the RT and qPCR steps contributed substantially to the overall error because the sampling noise was less pronounced. We recommend the use of sample replicates preferentially to any other replicates when working with solid tissue, cell cultures, and single cells, and we recommend the use of RT replicates when working with blood. We show how an optimal sampling plan can be calculated for a limited budget. .

  20. Radiation Information for Designing and Interpreting Biological Experiments Onboard Missions Beyond Low Earth Orbit

    Science.gov (United States)

    Straume, T.; Slaba, T.; Bhattacharya, S.; Braby, L. A.

    2017-01-01

    There is growing interest in flying biological experiments beyond low-Earth orbit (LEO) to measure biological responses potentially relevant to those expected during a human mission to Mars. Such experiments could be payloads onboard precursor missions, including unmanned private-public partnerships, as well as small low-cost spacecraft (satellites) designed specifically for biosentinel type missions. Designing such experiments requires knowledge of the radiation environment and its interactions with both the spacecraft and the experimental payload. Information is provided here that is useful for designing such experiments.

  1. Hypersonic Wind Tunnel Calibration Using the Modern Design of Experiments

    Science.gov (United States)

    Rhode, Matthew N.; DeLoach, Richard

    2005-01-01

    A calibration of a hypersonic wind tunnel has been conducted using formal experiment design techniques and response surface modeling. Data from a compact, highly efficient experiment was used to create a regression model of the pitot pressure as a function of the facility operating conditions as well as the longitudinal location within the test section. The new calibration utilized far fewer design points than prior experiments, but covered a wider range of the facility s operating envelope while revealing interactions between factors not captured in previous calibrations. A series of points chosen randomly within the design space was used to verify the accuracy of the response model. The development of the experiment design is discussed along with tactics used in the execution of the experiment to defend against systematic variation in the results. Trends in the data are illustrated, and comparisons are made to earlier findings.

  2. Thermal Design of a Bitter-Type Electromagnet for Dusty Plasma Experiments: Prototype Design and Construction

    Science.gov (United States)

    Birmingham, W. J.; Bates, E. M.; Romero-Talamás, Carlos; Rivera, W. F.

    2015-11-01

    For the purpose of analyzing magnetized dusty plasma at the University of Maryland Baltimore County (UMBC) Dusty Plasma Laboratory, we are designing a resistive water cooled Bitter-Type electromagnet. When completed, the magnet will be programmable to generate fields of up to 10 T for at least 10 seconds and up to several minutes. An analytic thermal design method was developed for establishing the location of elongated axial cooling passages. Comparisons with finite element analysis (FEA) data reveals that the thermal design method was capable of generating cooling channel patterns which establish manageable temperature profiles within the magnet. With our analytic method, cooling hole patterns can be generated in seconds instead of hours with FEA software. To further validate our thermal analysis as well as manufacturing techniques of our magnet design, we are now constructing a prototype electromagnet. The prototype is designed to operate continuously at 1 T with a current of 750 A, and has four diagnostic ports that can accommodate thermocouples and optical access to the water flow. A 1.25 inch diameter bore allows for axial field measurements and provides space for small scale experiments. Thermal analysis and specifics of the electromagnet design are presented.

  3. Design and Analysis of AN Static Aeroelastic Experiment

    Science.gov (United States)

    Hou, Ying-Yu; Yuan, Kai-Hua; Lv, Ji-Nan; Liu, Zi-Qiang

    2016-06-01

    Static aeroelastic experiments are very common in the United States and Russia. The objective of static aeroelastic experiments is to investigate deformation and loads of elastic structure in flow field. Generally speaking, prerequisite of this experiment is that the stiffness distribution of structure is known. This paper describes a method for designing experimental models, in the case where the stiffness distribution and boundary condition of a real aircraft are both uncertain. The stiffness distribution form of the structure can be calculated via finite element modeling and simulation calculation and F141 steels and rigid foam are used to make elastic model. In this paper, the design and manufacturing process of static aeroelastic models is presented and a set of experiment model was designed to simulate the stiffness of the designed wings, a set of experiments was designed to check the results. The test results show that the experimental method can effectively complete the design work of elastic model. This paper introduces the whole process of the static aeroelastic experiment, and the experimental results are analyzed. This paper developed a static aeroelasticity experiment technique and established an experiment model targeting at the swept wing of a certain kind of large aspect ratio aircraft.

  4. Central Equatorial Pacific Experiment (CEPEX). Design document

    Energy Technology Data Exchange (ETDEWEB)

    1993-04-01

    The Earth`s climate has varied significantly in the past, yet climate records reveal that in the tropics, sea surface temperatures seem to have been remarkably stable, varying by less than a few degrees Celsius over geologic time. Today, the large warm pool of the western Pacific shows similar characteristics. Its surface temperature always exceeds 27{degree}C, but never 31{degree}C. Heightened interest in this observation has been stimulated by questions of global climate change and the exploration of stabilizing climate feedback processes. Efforts to understand the observed weak sensitivity of tropical sea surface temperatures to climate forcing has led to a number of competing ideas about the nature of this apparent thermostat. Although there remains disagreement on the processes that regulate tropical sea surface temperature, most agree that further progress in resolving these differences requires comprehensive field observations of three-dimensional water vapor concentrations, solar and infrared radiative fluxes, surface fluxes of heat and water vapor, and cloud microphysical properties. This document describes the Central Equatorial Pacific Experiment (CEPEX) plan to collect such observations over the central equatorial Pacific Ocean during March of 1993.

  5. Concave cell design for FTIR measurements

    Institute of Scientific and Technical Information of China (English)

    Xiang Qin Lin; Zhi Xiang Zhang; Wan Qun Hu

    2011-01-01

    Wedged and V-shaped cells have advantages on depressing strong absorption bands and keeping the photo windows wide open without absorption block. Alternatively, this work presents a concave cell design, which is constructed by a plano-convex CaF2 lens in combination with a flat plate. Mathematical equations have been provided for data treatment with Matlab programs. The result indicates that the concave cell has advantages similar to the V-shaped cell. Reflection-absorption measurements of ethanol have been conducted on the cell in mid-IR region for demonstration. The spectrum obtained from the concave cell can easily be interpreted to regenerate its normal spectrum, which is fitting well with the spectrum taken in a conventional thin-layer cell. The concave cell is easier to construct and more convenient to operate, willing to have popular usages.

  6. Index wiki database: design and experiments

    CERN Document Server

    Krizhanovsky, A A

    2008-01-01

    With the fantastic growth of Internet usage, information search in documents of a special type called a "wiki page" that is written using a simple markup language, has become an important problem. This paper describes the software architectural model for indexing wiki texts in three languages (Russian, English, and German) and the interaction between the software components (GATE, Lemmatizer, and Synarcher). The inverted file index database was designed using visual tool DBDesigner. The rules for parsing Wikipedia texts are illustrated by examples. Two index databases of Russian Wikipedia (RW) and Simple English Wikipedia (SEW) are built and compared. The size of RW is by order of magnitude higher than SEW (number of words, lexemes), though the growth rate of number of pages in SEW was found to be 12% higher than in Russian, and the rate of acquisition of new words in SEW lexicon was 6% higher during a period of five months (from September 2007 to February 2008). The Zipf's law was tested with both Russian an...

  7. Structural Optimization of a Force Balance Using a Computational Experiment Design

    Science.gov (United States)

    Parker, P. A.; DeLoach, R.

    2002-01-01

    This paper proposes a new approach to force balance structural optimization featuring a computational experiment design. Currently, this multi-dimensional design process requires the designer to perform a simplification by executing parameter studies on a small subset of design variables. This one-factor-at-a-time approach varies a single variable while holding all others at a constant level. Consequently, subtle interactions among the design variables, which can be exploited to achieve the design objectives, are undetected. The proposed method combines Modern Design of Experiments techniques to direct the exploration of the multi-dimensional design space, and a finite element analysis code to generate the experimental data. To efficiently search for an optimum combination of design variables and minimize the computational resources, a sequential design strategy was employed. Experimental results from the optimization of a non-traditional force balance measurement section are presented. An approach to overcome the unique problems associated with the simultaneous optimization of multiple response criteria is described. A quantitative single-point design procedure that reflects the designer's subjective impression of the relative importance of various design objectives, and a graphical multi-response optimization procedure that provides further insights into available tradeoffs among competing design objectives are illustrated. The proposed method enhances the intuition and experience of the designer by providing new perspectives on the relationships between the design variables and the competing design objectives providing a systematic foundation for advancements in structural design.

  8. Design, integration and preliminary results of the IXV Catalysis experiment

    Science.gov (United States)

    Viladegut, Alan; Panerai, F.; Chazot, O.; Pichon, T.; Bertrand, P.; Verdy, C.; Coddet, C.

    2016-08-01

    The CATalytic Experiment (CATE) is an in-flight demonstration of catalysis effects at the surface of thermal protection materials. A high-catalytic coating was applied over the baseline ceramic material on the windward side of the intermediate experimental vehicle (IXV). The temperature jump due to different catalytic activities was detected during re-entry through measurements made with near-surface thermocouples on the windward side of the vehicle. The experiment aimed at contributing to the development and validation of gas/surface interaction models for re-entry applications. The present paper summarizes the design of CATE and its integration on the windward side of the IXV. Results of a qualification campaign at the Plasmatron facility of the von Karman Institute for Fluid Dynamics are presented. They provided an experimental evidence of the temperature jump at the low-to-high catalytic interface of the heat shield under aerothermal conditions relevant to the actual IXV flight. These tests also gave confidence so that the high-catalytic patch would not endanger the integrity of the vehicle and the safety of the mission. A preliminary assessment of flight data from the thermocouple measurements shows consistency with results of the qualification tests.

  9. Recent experience with design and manufacture of cine lenses

    Science.gov (United States)

    Thorpe, Michael D.; Dalzell, Kristen E.

    2015-09-01

    Modern cine lenses require a high degree of aberration correction over a large and ever expanding image size. At low to medium volume production levels, these highly corrected designs also require a workable tolerance set and compensation scheme for successful manufacture. In this paper we discuss the design and manufacture of cine lenses with reference to current designs both internal and in the patent literature and some experience in design, tolerancing and manufacturing these lenses in medium volume production.

  10. Measuring enjoyment of an interactive museum experience

    NARCIS (Netherlands)

    van Dijk, Elisabeth M.A.G.; Lingnau, Andreas; Kockelkorn, Hub

    2012-01-01

    Museums are increasingly being equipped with interactive technology. The main goal of using technology is to improve the museum-going experience of visitors. In this paper, we present the results of a study with an electronic quest through a museum aimed at children in the age of 10-12. We wanted to

  11. Instrumentation, measurements, and experiments in fluids

    CERN Document Server

    Rathakrishnan, E

    2007-01-01

    NEED AND OBJECTIVE OF EXPERIMENTAL STUDY Some Fluid Mechanics MeasurementsMeasurement SystemsSome of the Important Quantities Associated with FluidFlow MeasurementsFUNDAMENTALS OF FLUID MECHANICSProperties of FluidsThermodynamic PropertiesSurface TensionAnalysis of Fluid FlowBasic and Subsidiary Laws for Continuous MediaKinematics of Fluid FlowStreamlinesPotential FlowViscous FlowsGas DynamicsWIND TUNNELSLow-Speed Wind TunnelsPower Losses in a Wind TunnelHigh-Speed Wind TunnelsHypersonic TunnelsInstrume

  12. Strangeness measurements at the HADES experiment

    OpenAIRE

    2010-01-01

    Abstract We report on HADES measurements of strange hadrons in the collision systems Ar(1.756 AGeV)+KCl and p+p at 3.5 GeV. Comparisons of K 0 s transverse mass and rapidity spectra to IQMD transport model calculations give a strong hint to a repulsive kaon-nucleon potential. The effect of the potential shows up strongest at very low transverse momenta, which were measured by HADES with high statistics. Statistical model fits show a fair agreement to the particle yields measured in the hea...

  13. Recent Multiboson measurements with the ATLAS experiment

    CERN Document Server

    CERN. Geneva

    2016-01-01

    Measurements of the cross sections of the production of two electroweak gauge bosons constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. We present recent ATLAS measurements of inclusive and differential cross sections for WW, WZ, ZZ and Z + photon at centre of mass energies of 8 TeV and 13 TeV. Large next-to-next-to-leading order QCD corrections were recently calculated and are confronted with the measurements. We also present recent ATLAS measurements of inclusive cross sections for electroweak production of WZ + 2 jets and production of Z + di-photon at 8 TeV. Differential distributions sensitive to anomalous triple and quartic gauge couplings have been studied and limits on new physics have been derived.

  14. A novel experiment to measure ion self-helicity conservation

    Science.gov (United States)

    You, Setthivoine; von der Linden, Jens; Paritsky, Lenny; Geier, James; Jacobs, Stewart

    2011-10-01

    A novel experiment is designed to test ion self-helicity conservation during plasma relaxation with unique diagnostics for observing plasma jet collisions with compact toroids. A pair of conical theta pinches merge two compact toroids while another pair of planar coaxial guns shoot smaller plasma jets tangentially on to the compact torus to induce net bulk angular rotation. A large vacuum chamber, flexible gas injection arrangements and power supplies are designed to allow for a range of S * β values and ion flow velocities to explore regimes with two-fluid effects on compact toroid configurations. Two sequential ion flow maps in each shot can be reconstructed from 3D vector tomography of multichannel bulk ion Doppler spectroscopy. With an insertable 3D array of B-dot probes, the ion self-helicity can be measured in the entire 3D volume twice in each discharge. A fast ion gauge measures time-resolved neutral gas profiles to optimize gas injection. A novel two-fluid plasma lattice Boltzmann numerical model is being developed to support the interpretation of experimental measurements.

  15. 2011 AERA Presidential Address: Designing Resilient Ecologies--Social Design Experiments and a New Social Imagination

    Science.gov (United States)

    Gutiérrez, Kris D.

    2016-01-01

    This article is about designing for educational possibilities--designs that in their inception, social organization, and implementation squarely address issues of cultural diversity, social inequality, and robust learning. I discuss an approach to design-based research, social design experiments, that privileges a social scientific inquiry…

  16. Selecting the best design for nonstandard toxicology experiments.

    Science.gov (United States)

    Webb, Jennifer M; Smucker, Byran J; Bailer, A John

    2014-10-01

    Although many experiments in environmental toxicology use standard statistical experimental designs, there are situations that arise where no such standard design is natural or applicable because of logistical constraints. For example, the layout of a laboratory may suggest that each shelf serve as a block, with the number of experimental units per shelf either greater than or less than the number of treatments in a way that precludes the use of a typical block design. In such cases, an effective and powerful alternative is to employ optimal experimental design principles, a strategy that produces designs with precise statistical estimates. Here, a D-optimal design was generated for an experiment in environmental toxicology that has 2 factors, 16 treatments, and constraints similar to those described above. After initial consideration of a randomized complete block design and an intuitive cyclic design, it was decided to compare a D-optimal design and a slightly more complicated version of the cyclic design. Simulations were conducted generating random responses under a variety of scenarios that reflect conditions motivated by a similar toxicology study, and the designs were evaluated via D-efficiency as well as by a power analysis. The cyclic design performed well compared to the D-optimal design.

  17. Designing Information Measures for Real-time Lightcurve Classification

    Science.gov (United States)

    Jones, David Edward; Chen, Yang; Meng, Xiao-Li; Siemiginowska, Aneta; Kashyap, Vinay

    2016-01-01

    Since telescope time is limited, real-time lightcurve classification involves carefully selecting future time points at which sources must be observed in order to maximize the information that will be gained for classification. We propose a framework for constructing measures of information for testing/classification/model-selection and demonstrate their use in experimental design. Degroot (1962) developed a general framework for constructing Bayesian measures of the expected information that an experiment will provide for estimation, and our framework analogously constructs measures of information for hypothesis testing. Such test information measures are most useful for model selection and classification problems. Indeed, our framework suggests a probability based measure of test information, which in decision problems has more appealing properties than variance based measures. In the case of lightcurve classification, we adapt our designs to penalize long waits until the next observation time. Lastly, we consider ways to address other aspects of the problem, such as uncertainty estimation arising due to contamination from nearby contaminating sources or background diffuse emission. We acknowledge support from Smithsonian Competitive Grants Fund 40488100HH0043 and NSF grant DMS 1208791.

  18. Assay optimization: a statistical design of experiments approach.

    Science.gov (United States)

    Altekar, Maneesha; Homon, Carol A; Kashem, Mohammed A; Mason, Steven W; Nelson, Richard M; Patnaude, Lori A; Yingling, Jeffrey; Taylor, Paul B

    2007-03-01

    With the transition from manual to robotic HTS in the last several years, assay optimization has become a significant bottleneck. Recent advances in robotic liquid handling have made it feasible to reduce assay optimization timelines with the application of statistically designed experiments. When implemented, they can efficiently optimize assays by rapidly identifying significant factors, complex interactions, and nonlinear responses. This article focuses on the use of statistically designed experiments in assay optimization.

  19. Food Enterprise Web Design Based on User Experience

    OpenAIRE

    Fei Wang

    2015-01-01

    Excellent auxiliary food enterprise web design conveyed good visual transmission effect through user experience. This study was based on the food enterprise managers and customers as the main operating object to get the performance of the web page creation, web page design not only focused on the function and work efficiency, the most important thing was that the user experience in the process of web page interaction.

  20. Using the experience-based design approach to improve orthodontic care.

    Science.gov (United States)

    Ellis, Pamela E; Silverton, Sarah

    2014-12-01

    The experience-based design (ebd) approach is a method of measuring patient experience, which deliberately draws out subjective, emotional and personal feelings of the patients using a service. We describe how the experience-based design approach has been used to measure the experiences of teenage patients at orthodontic consultation appointments in a district general hospital. This has allowed us to identify the points in the patient's journey where they experience most anxiety and nervousness and to target service improvements in these areas. We found the ebd approach effective in measuring patient experience in a teenage patient population. We demonstrate how the service improvements implemented have reduced negative feelings during new patient consultations.

  1. Quarkonium measurements in the STAR experiment

    Energy Technology Data Exchange (ETDEWEB)

    Bielcik, Jaroslav

    2014-12-15

    Calculations of Quantum Chromodynamics on lattice showed that under conditions of high energy density or high temperature nuclear matter undergoes a phase transition from a state of quarks and gluons confined in hadrons to a deconfined state, the Quark–Gluon Plasma (QGP). Such conditions were present in first moments after the Big Bang and can be created in laboratory by colliding of heavy ions with sufficient energy. One of the most prominent signatures of QGP formation is the quarkonium suppression in central heavy-ion collisions arising from the Debye screening of the quark–antiquark potential in hot and dense nuclear matter. However, cold nuclear matter effects and heavy quark recombination could influence the measured quarkonium yields. Measurements of J/ψ at different collision energies can shed new light on understanding the interplay of these mechanisms for J/ψ production. The production mechanism of J/ψ is not well understood yet and the simultaneous measurement of J/ψ transverse momentum spectra and polarization in p+p collisions can significantly constrain possible production scenarios. In this proceedings, we report the recent STAR measurements of J/ψ production at mid-rapidity in p+p, d+Au, Au+Au at √(s{sub NN})=200 GeV and in Au+Au collisions at √(s{sub NN})=39 GeV and √(s{sub NN})=62 GeV.

  2. The Copenhagen tracer experiments: Reporting of measurements

    DEFF Research Database (Denmark)

    Gryning, Sven-Erik; Lyck, E.

    2002-01-01

    buoyancy from a tower at a height of 115 meters and then collected 2-3 meters above ground-level at positions in up to three crosswind arcs of tracer sampling units, positioned 2-6 km from the point of release. Three consecutive 20 min averaged tracer concentrations were measured, allowing for a total...

  3. Coulomb's Electrical Measurements. Experiment No. 14.

    Science.gov (United States)

    Devons, Samuel

    Presented is information related to the life and work of Charles Coulomb as well as detailed notes of his measurements of the distribution of electricity on conductors. The two methods that he used (the large torsion balance, and the timing of "force" oscillations) are described. (SA)

  4. A Model for Designing Adaptive Laboratory Evolution Experiments.

    Science.gov (United States)

    LaCroix, Ryan A; Palsson, Bernhard O; Feist, Adam M

    2017-04-15

    The occurrence of mutations is a cornerstone of the evolutionary theory of adaptation, capitalizing on the rare chance that a mutation confers a fitness benefit. Natural selection is increasingly being leveraged in laboratory settings for industrial and basic science applications. Despite increasing deployment, there are no standardized procedures available for designing and performing adaptive laboratory evolution (ALE) experiments. Thus, there is a need to optimize the experimental design, specifically for determining when to consider an experiment complete and for balancing outcomes with available resources (i.e., laboratory supplies, personnel, and time). To design and to better understand ALE experiments, a simulator, ALEsim, was developed, validated, and applied to the optimization of ALE experiments. The effects of various passage sizes were experimentally determined and subsequently evaluated with ALEsim, to explain differences in experimental outcomes. Furthermore, a beneficial mutation rate of 10(-6.9) to 10(-8.4) mutations per cell division was derived. A retrospective analysis of ALE experiments revealed that passage sizes typically employed in serial passage batch culture ALE experiments led to inefficient production and fixation of beneficial mutations. ALEsim and the results described here will aid in the design of ALE experiments to fit the exact needs of a project while taking into account the resources required and will lower the barriers to entry for this experimental technique.IMPORTANCE ALE is a widely used scientific technique to increase scientific understanding, as well as to create industrially relevant organisms. The manner in which ALE experiments are conducted is highly manual and uniform, with little optimization for efficiency. Such inefficiencies result in suboptimal experiments that can take multiple months to complete. With the availability of automation and computer simulations, we can now perform these experiments in an optimized

  5. Application of optimal design methodologies in clinical pharmacology experiments.

    Science.gov (United States)

    Ogungbenro, Kayode; Dokoumetzidis, Aristides; Aarons, Leon

    2009-01-01

    Pharmacokinetics and pharmacodynamics data are often analysed by mixed-effects modelling techniques (also known as population analysis), which has become a standard tool in the pharmaceutical industries for drug development. The last 10 years has witnessed considerable interest in the application of experimental design theories to population pharmacokinetic and pharmacodynamic experiments. Design of population pharmacokinetic experiments involves selection and a careful balance of a number of design factors. Optimal design theory uses prior information about the model and parameter estimates to optimize a function of the Fisher information matrix to obtain the best combination of the design factors. This paper provides a review of the different approaches that have been described in the literature for optimal design of population pharmacokinetic and pharmacodynamic experiments. It describes options that are available and highlights some of the issues that could be of concern as regards practical application. It also discusses areas of application of optimal design theories in clinical pharmacology experiments. It is expected that as the awareness about the benefits of this approach increases, more people will embrace it and ultimately will lead to more efficient population pharmacokinetic and pharmacodynamic experiments and can also help to reduce both cost and time during drug development.

  6. ExperimentDesigner A Tcl/Tk Interface for Creating Experiments in EPICS

    CERN Document Server

    Shang, Hairong

    2005-01-01

    ExperimentDesigner is a Tcl/Tk interface that allows users to easily design and run complicated experiments using a convenient graphical user interface (GUI). Features include: process variable monitoring, which pauses the experiment when values are out of range; user-defined initialization, execution, and finalization sequences; support of complex execution chains containing actions such as setting controls, reading values, running external programs, interacting with the user, etc.; collection of output data for convenient postprocessing; saving and loading of experiment configurations; convenient use of SDDS Toolkit programs; and execution of experiments from the command line without a GUI.

  7. On Design Experiment Teaching in Engineering Quality Cultivation

    Science.gov (United States)

    Chen, Xiao

    2008-01-01

    Design experiment refers to that designed and conducted by students independently and is surely an important method to cultivate students' comprehensive quality. According to the development and requirements of experimental teaching, this article carries out a study and analysis on the purpose, significance, denotation, connotation and…

  8. Working Theory into and out of Design Experiments

    Science.gov (United States)

    Palincsar, Annemarie Sullivan

    2005-01-01

    In this response, I advocate for the value of considering theory in the design-based research that Gersten describes in Behind the Scenes of an Intervention Research Study. I argue that such an emphasis: is consistent with the literature on design experiments, is integral to advancing knowledge building within domains, serves to advance the work…

  9. Thinking about "Design Thinking": A Study of Teacher Experiences

    Science.gov (United States)

    Retna, Kala S.

    2016-01-01

    Schools are continuously looking for new ways of enhancing student learning to equip students with skills that would enable them to cope with twenty-first century demands. One promising approach focuses on design thinking. This study examines teacher's perceptions, experiences and challenges faced in adopting design thinking. There is a lack of…

  10. Designing conjoint choice experiments using managers' prior beliefs

    NARCIS (Netherlands)

    Sandor, Z; Wedel, M

    2001-01-01

    The authors provide more efficient designs for conjoint choice experiments based on prior information elicited from managers about the parameters and their associated uncertainty. The authors use a Bayesian design procedure that assumes a prior distribution of likely parameter values and optimizes

  11. Thinking about "Design Thinking": A Study of Teacher Experiences

    Science.gov (United States)

    Retna, Kala S.

    2016-01-01

    Schools are continuously looking for new ways of enhancing student learning to equip students with skills that would enable them to cope with twenty-first century demands. One promising approach focuses on design thinking. This study examines teacher's perceptions, experiences and challenges faced in adopting design thinking. There is a lack of…

  12. Design of spatial experiments: Model fitting and prediction

    Energy Technology Data Exchange (ETDEWEB)

    Fedorov, V.V.

    1996-03-01

    The main objective of the paper is to describe and develop model oriented methods and algorithms for the design of spatial experiments. Unlike many other publications in this area, the approach proposed here is essentially based on the ideas of convex design theory.

  13. Statistically designed experiments to screen chemical mixtures for possible interactions

    NARCIS (Netherlands)

    Groten, J.P.; Tajima, O.; Feron, V.J.; Schoen, E.D.

    1998-01-01

    For the accurate analysis of possible interactive effects of chemicals in a defined mixture, statistical designs are necessary to develop clear and manageable experiments. For instance, factorial designs have been successfully used to detect two-factor interactions. Particularly useful for this purp

  14. Statistically designed experiments to screen chemical mixtures for possible interactions

    NARCIS (Netherlands)

    Groten, J.P.; Tajima, O.; Feron, V.J.; Schoen, E.D.

    1998-01-01

    For the accurate analysis of possible interactive effects of chemicals in a defined mixture, statistical designs are necessary to develop clear and manageable experiments. For instance, factorial designs have been successfully used to detect two-factor interactions. Particularly useful for this purp

  15. IMAGE SELECTION FOR 3D MEASUREMENT BASED ON NETWORK DESIGN

    Directory of Open Access Journals (Sweden)

    T. Fuse

    2015-05-01

    Full Text Available 3D models have been widely used by spread of many available free-software. On the other hand, enormous images can be easily acquired, and images are utilized for creating the 3D models recently. However, the creation of 3D models by using huge amount of images takes a lot of time and effort, and then efficiency for 3D measurement are required. In the efficiency strategy, the accuracy of the measurement is also required. This paper develops an image selection method based on network design that means surveying network construction. The proposed method uses image connectivity graph. By this, the image selection problem is regarded as combinatorial optimization problem and the graph cuts technique can be applied. Additionally, in the process of 3D reconstruction, low quality images and similarity images are extracted and removed. Through the experiments, the significance of the proposed method is confirmed. Potential to efficient and accurate 3D measurement is implied.

  16. Optimal Design of Experiments for Parametric Identification of Civil Engineering Structures

    DEFF Research Database (Denmark)

    Kirkegaard, Poul Henning

    Optimal Systems of experiments for parametric identification of civil engineering structures is investigated. Design of experiments for parametric identification of dynamic systems is usually done by minimizing a scalar measure, e.g the determinant, the trace ect., of an estimated parameter...

  17. Design of experiments in Biomedical Signal Processing Course.

    Science.gov (United States)

    Li, Ling; Li, Bin

    2008-01-01

    Biomedical Signal Processing is one of the most important major subjects in Biomedical Engineering. The contents of Biomedical Signal Processing include the theories of digital signal processing, the knowledge of different biomedical signals, physiology and the ability of computer programming. Based on our past five years teaching experiences, in order to let students master the signal processing algorithm well, we found that the design of experiments following algorithm was very important. In this paper we presented the ideas and aims in designing the experiments. The results showed that our methods facilitated the study of abstractive signal processing algorithms and made understanding of biomedical signals in a simple way.

  18. Propagation-related AMT design aspects and supporting experiments

    Science.gov (United States)

    Dessouky, Khaled; Estabrook, Polly

    1991-01-01

    The ACTS Mobile Terminal (AMT) is presently being developed with the goal of significantly extending commercial satellite applications and their user base. A thorough knowledge of the Ka-band channel characteristics is essential to the proper design of a commercially viable system that efficiently utilizes the valuable resources. To date, only limited tests have been performed to characterize the Ka-band channel, and they have focused on the needs of fixed terminals. As part of the value of the AMT as a Ka-band test bed is its function as a vehicle through which tests specifically applicable to the mobile satellite communications can be performed. The exact propagation environment with the proper set of elevation angles, vehicle antenna gains and patterns, roadside shadowing, rain, and Doppler is encountered. The ability to measure all of the above, as well as correlate their effects with observed communication system performance, creates an invaluable opportunity to understand in depth Ka-band's potential in supporting mobile and personal communications. This paper discusses the propagation information required for system design, the setup with ACTS that will enable obtaining this information, and finally the types of experiments to be performed and data to be gathered by the AMT to meet this objective.

  19. Optimisation of sampling windows design for population pharmacokinetic experiments.

    Science.gov (United States)

    Ogungbenro, Kayode; Aarons, Leon

    2008-08-01

    This paper describes an approach for optimising sampling windows for population pharmacokinetic experiments. Sampling windows designs are more practical in late phase drug development where patients are enrolled in many centres and in out-patient clinic settings. Collection of samples under the uncontrolled environment at these centres at fixed times may be problematic and can result in uninformative data. Population pharmacokinetic sampling windows design provides an opportunity to control when samples are collected by allowing some flexibility and yet provide satisfactory parameter estimation. This approach uses information obtained from previous experiments about the model and parameter estimates to optimise sampling windows for population pharmacokinetic experiments within a space of admissible sampling windows sequences. The optimisation is based on a continuous design and in addition to sampling windows the structure of the population design in terms of the proportion of subjects in elementary designs, number of elementary designs in the population design and number of sampling windows per elementary design is also optimised. The results obtained showed that optimal sampling windows designs obtained using this approach are very efficient for estimating population PK parameters and provide greater flexibility in terms of when samples are collected. The results obtained also showed that the generalized equivalence theorem holds for this approach.

  20. 基于霍尔效应的惯性测振实验的研究与应用设计%Experiment research and application design of inertial vibration measurement based on Hall effect

    Institute of Scientific and Technical Information of China (English)

    徐雅惠; 周林; 李欣蔚; 邓加军

    2015-01-01

    利用霍尔元件在线性磁场中的霍尔电压与磁感应强度的线性关系,推导得出振动物体振幅与霍尔电压之间的函数关系。设计满足该线性关系的磁场并通过实验得出其线性表达式,进而设计出基于霍尔效应的惯性式振动传感器,最后通过实验验证该传感器的实用性。%The relationship between the vibration amplitude of an object and the Hall voltage was derived according to the linear relationship between Hall voltage and magnetic flux density in a linear magnetic field .A magnetic field meeting the linear condition was designed and the experimental re‐sults were fitted to this linear expression .Then the inertial vibration sensor based on Hall effect was designed and the practicability was verified by experiment .

  1. Design of Laboratory Experiments to Study Photoionization Fronts

    Science.gov (United States)

    Gray, William James; Davis, Josh; Drake, R. Paul

    2017-06-01

    Here we present the theoretical foundation for a laboratory experiment to study photoionization fronts. Photoionization fronts play important roles in the formation and evolution of structure in the Universe. A properly designed experiment will have to control the recombination rate, electron impact ionization rate, and the initial thermal spectrum. We show that such an experiment can be designed, but requires the use of the largest high-energy-density laser facilities, such as Omega, Z, and NIF. We also show that prior experiments do not actually generate photoionization fronts, rather a heat front is produced by heat conductions. We show some initial simulation results of the current experimental design and characterize the ionization front.

  2. The GAMMA-400 Space Experiment: Gammas, Electrons and Nuclei Measurements

    Science.gov (United States)

    Mocchiutti, E.; Galper, A. M.; Adriani, O.; Aptekar, R. L.; Arkhangelskaja, I. V.; Arkhangelskiy, A. I.; Boezio, M.; Bonvicini, V.; Boyarchuk, K. A.; Carbone, R.; Cumani, P.; Fradkin, M. I.; Gusakov, Yu. V.; Kaplin, V. A.; Kachanov, V. A.; Kheymits, M. D.; Leonov, A. A.; Longo, F.; Mazets, E. P.; Maestro, P.; Marrocchesi, P.; Mereminskiy, I. A.; Mikhailov, V. V.; Moiseev, A. A.; Mori, N.; Moskalenko, I. V.; Naumov, P. Yu.; Papini, P.; Picozza, P.; Rodin, V. G.; Runtso, M. F.; Sarkar, R.; Sparvoli, R.; Spillantini, P.; Suchkov, S. I.; Tavani, M.; Topchiev, N. P.; Vacchi, A.; Vannuccini, E.; Yurkin, Yu. T.; Zampa, N.; Zverev, V. G.; Zirakashvili, V. N.

    2013-06-01

    The present design of the new space gamma-ray telescope GAMMA-400 for the energy range 50 MeV-3 TeV is presented. The proposed instrument has an angular resolution of 1-2 degrees at E(γ)˜100 MeV and ˜0.01 degrees at E(γ)>100 GeV and an energy resolution ˜1% at E(γ)>100 GeV. By means of a deep segmented calorimeter high energy electron flux can be studied, with a proton rejection factor of about 106. The GAMMA-400 experiment is optimized to address a broad range of science topics, such as search for signatures of dark matter, studies of galactic and extragalactic gamma-ray sources, galactic and extragalactic diffuse emission, gamma-ray bursts, as well as high-precision measurements of spectra of high energy electrons, protons and nuclei up to the knee.

  3. Experiences on pollution level measurement in Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Montoya-Tena, Gerardo; Hernandez-Corona, Ramiro; Ramirez-Vazquez, Isaias [Instituto de Investigaciones Electricas, Reforma 113 Cuernavaca, Mor. (Mexico)

    2005-09-15

    The pollution on overhead insulators is influenced by the pollutant type as well as by the climate of the site. In Mexico, due to its orography and diversity of lands, there are several areas where the failures on the overhead insulation are mainly caused by the pollution. Since the decade of 1980s, various studies have been performed to solve or at least alleviate such transmission and distribution power line pollution-related problems. This paper presents a description of several studies conducted by the Mexican Electrical Research Institute 'Instituto de Investigaciones Electricas' (IIE) together with the Mexican electrical utility 'Comision Federal de Electricidad' (CFE), from the elaboration of a contamination map to the development of a system for measuring leakage current, which is used as a tool for the in-service diagnostic of insulators installed on lines of transmission. (author)

  4. Engagement in RNs working in Magnet®-designated hospitals: exploring the significance of work experience.

    Science.gov (United States)

    Hagedorn Wonder, Amy

    2012-12-01

    This study analyzed and evaluated the relationships between work engagement (WE) and work experience among acute-care RNs in Magnet®-designated hospitals. The organizational structures of Magnet-designated hospitals are recognized to promote RN engagement, yet limited knowledge exists on engendering engagement to the same degree in all nurses. The study used a descriptive, correlational design. A convenience sample of RNs (n = 220) completed 2 surveys to measure WE, RN experience, and unit longevity (years of experience in the current setting). Significant relationships were found between WE and RN experience in any setting, within the consistent organizational structures of Magnet-designated hospitals. This study highlights the importance of organizational structures and the significance of RN experience in creating engagement among nurses. Enhancing engagement in the RN workforce facilitates retention and improved outcomes for patients, nurses, and organizations.

  5. Measurement and Its Reliability: An Introductory Laboratory Experiment

    Science.gov (United States)

    Poultney, Sherman K.

    1971-01-01

    Describes a laboratory activity about measurement and its reliability for general education students. The measurement focuses on automobile speeds and allows for estimates of errors, experimental design, and relativity in addition to kinematical concepts. (DS)

  6. New Experiment to Measure the Electron Electric Dipole Moment

    Science.gov (United States)

    Kittle, Melanie

    2003-01-01

    An electron can possess an electric dipole moment (edm) only if time reversal symmetry (T) is violated. No edm of any particle has yet been discovered. CP-violation, equivalent to T-violation by the CPT theorem, does occur in Kaon decays and can be accounted for by the standard model. However, this mechanism leads to an electron edm d(sub e) of the order of 10(exp -38) e cm, whereas the current experimental bound on d(sub e) is about 10(exp -27) e cm. However, well-motivated extensions of the standard model such as supersymmetric theories do predict that de could be as large as the current bound. In addition, CP violation in the early universe is required to explain the preponderance of matter over anti-matter, but the exact mechanism of this CP violation is unclear. For these reasons, we are undertaking a new experimental program to determine de to an improved accuracy of 10(exp -29) e cm. Our experiment will use laser-cooled, trapped Cesium atoms to measure the atomic edm d(sub Cs) that occurs if d(sub e) is not zero. In order to do this, we will measure the energy splitting between the atoms spin states in parallel electric and magnetic fields. The signature of an edm would be a linear dependence of the splitting on the electric field E due to the interaction - d(sub Cs) dot E. Our measurement will be much more sensitive than previous measurements because atoms can be stored in the trap for tens of seconds, allowing for much narrower Zeeman resonance linewidths. Also, our method eliminates the most important systematic errors, proportional to atomic velocity, which have limited previous experiments. In this presentation, we will describe the design of our new apparatus, which is presently under construction. An important feature of our experimental apparatus is that magnetic field noise will be suppressed to a very low value of the order of 1 fT/(Hz)1/2. This requires careful attention to the Johnson noise currents in the chamber, which have not been important

  7. Design of Orion Soil Impact Study using the Modern Design of Experiments

    Science.gov (United States)

    DeLoach, Richard

    2010-01-01

    Two conventional One Factor At a Time (OFAT) test matrices under consideration for an Orion Landing System subscale soil impact study are reviewed. Certain weaknesses in the designs, systemic to OFAT experiment designs generally, are identified. An alternative test matrix is proposed that is based in the Modern Design of Experiments (MDOE), which achieves certain synergies by combining the original two test matrices into one. The attendant resource savings are quantified and the impact on uncertainty is discussed.

  8. Measuring the experience of hospitality : Scale development and validation

    NARCIS (Netherlands)

    Pijls-Hoekstra, Ruth; Groen, Brenda H.; Galetzka, Mirjam; Pruyn, Adriaan T.H.

    2017-01-01

    This paper identifies what customers experience as hospitality and subsequently presents a novel and compact assessment scale for measuring customers’ experience of hospitality at any kind of service organization. The Experience of Hospitality Scale (EH-Scale) takes a broader perspective compared to

  9. RUSALKA experiment to measure carbon dioxide and methane from ISS

    Science.gov (United States)

    Korablev, Oleg; Trokhimovskiy, Alexander; Vinogradov, Imant; Fedorova, Anna; Ivanov, Andrei; Rodin, Alexander; Smirnov, Yurii

    2010-05-01

    RUSALKA is an experiment aimed to demonstrate the method to monitor CO2 and CH4 with low cost and weight equipment. It was delivered to the Russian segment of the International Space Station (ISS) in the end of summer 2009. The novel instrument is a high-resolution near-IR spectrometer combining an echelle grating with an acousto-optic tunable filter (AOTF) for separation of diffraction orders. A compact design with no moving parts within the mass budget of 2 kg allows to reach the resolving power of 20000 in the spectral range of 1580 nm (CO2), 1640 nm (CH4), in 49 and 47 echelle grating diffraction orders, and of reference O2 bands 760 and 1270 nm, in 101 and 61 diffraction orders. Only one diffraction order can be measured at a time, but thanks to flexibility of the AOTF tuning, any order can be measured randomly and rapidly within the spectral range. A spectrometer, based on this principle, SOIR (Solar Occultation InfraRed) is operational on Venus Express ESA mission since 2005. RUSALKA investigation targets precision measurements of CO2 and CH4 integral quantities, in nadir/oblique or observing solar glint over the water surfaces. Test measurements are also planned in solar occultation mode. Battery-powered RUSALKA package consists of the spectrometer itself, standard photographic camera for context imaging, and adapters. Measurements are performed by crew members pointing manually the target areas. Such measurements from ISS allow to verify methods used on different satellite platforms. The small size of the instrument makes it ideal for micro-satellites, capable to provide necessary pointing for glint or solar occultation observations. By the end of year 2009 all technical and organizing problems were solved and first datasets (high resolution spectra and exact ISS position data) where acquired for further processing.

  10. Design of Experiments, Model Calibration and Data Assimilation

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Brian J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-07-30

    This presentation provides an overview of emulation, calibration and experiment design for computer experiments. Emulation refers to building a statistical surrogate from a carefully selected and limited set of model runs to predict unsampled outputs. The standard kriging approach to emulation of complex computer models is presented. Calibration refers to the process of probabilistically constraining uncertain physics/engineering model inputs to be consistent with observed experimental data. An initial probability distribution for these parameters is updated using the experimental information. Markov chain Monte Carlo (MCMC) algorithms are often used to sample the calibrated parameter distribution. Several MCMC algorithms commonly employed in practice are presented, along with a popular diagnostic for evaluating chain behavior. Space-filling approaches to experiment design for selecting model runs to build effective emulators are discussed, including Latin Hypercube Design and extensions based on orthogonal array skeleton designs and imposed symmetry requirements. Optimization criteria that further enforce space-filling, possibly in projections of the input space, are mentioned. Designs to screen for important input variations are summarized and used for variable selection in a nuclear fuels performance application. This is followed by illustration of sequential experiment design strategies for optimization, global prediction, and rare event inference.

  11. Design of Experiments, Model Calibration and Data Assimilation

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Brian J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-07-30

    This presentation provides an overview of emulation, calibration and experiment design for computer experiments. Emulation refers to building a statistical surrogate from a carefully selected and limited set of model runs to predict unsampled outputs. The standard kriging approach to emulation of complex computer models is presented. Calibration refers to the process of probabilistically constraining uncertain physics/engineering model inputs to be consistent with observed experimental data. An initial probability distribution for these parameters is updated using the experimental information. Markov chain Monte Carlo (MCMC) algorithms are often used to sample the calibrated parameter distribution. Several MCMC algorithms commonly employed in practice are presented, along with a popular diagnostic for evaluating chain behavior. Space-filling approaches to experiment design for selecting model runs to build effective emulators are discussed, including Latin Hypercube Design and extensions based on orthogonal array skeleton designs and imposed symmetry requirements. Optimization criteria that further enforce space-filling, possibly in projections of the input space, are mentioned. Designs to screen for important input variations are summarized and used for variable selection in a nuclear fuels performance application. This is followed by illustration of sequential experiment design strategies for optimization, global prediction, and rare event inference.

  12. Designing With Empathy: Humanizing Narratives for Inspired Healthcare Experiences.

    Science.gov (United States)

    Carmel-Gilfilen, Candy; Portillo, Margaret

    2016-01-01

    Designers can and should play a critical role in shaping a holistic healthcare experience by creating empathetic design solutions that foster a culture of care for patients, families, and staff. Using narrative inquiry as a design tool, this case study shares strategies for promoting empathy. Designing for patient-centered care infuses empathy into the creative process. Narrative inquiry offers a methodology to think about and create empathetic design that enhances awareness, responsiveness, and accountability. This article shares discoveries from a studio on empathetic design within an outpatient cancer care center. The studio engaged students in narrative techniques throughout the design process by incorporating aural, visual, and written storytelling. Benchmarking, observations, and interviews were merged with data drawn from scholarly evidence-based design literature reviews. Using an empathy-focused design process not only motivated students to be more engaged in the project but facilitated the generation of fresh and original ideas. Design solutions were innovative and impactful in supporting the whole person. Similarities as well as differences defined empathetic cancer care across projects and embodied concepts of design empowerment, design for the whole person, and design for healing. By becoming more conscious of empathy, those who create healthcare environments can better connect holistically to the user to take an experiential approach to design. Explicitly developing a mind-set that raises empathy to the forefront of the design process offers a breakthrough in design thinking that bridges the gap between what might be defined as "good design" and patient-centered care. © The Author(s) 2015.

  13. Trade-offs in the design of experiments.

    Science.gov (United States)

    Wiley, R Haven

    2009-11-01

    This comment supplements and clarifies issues raised by J. C. Schank and T. J. Koehnle (2009) in their critique of experimental design. First, the pervasiveness of trade-offs in the design of experiments is emphasized (Wiley, 2003). Particularly germane to Schank and Koehnle's discussion are the inevitable trade-offs in any decisions to include blocking or to standardize conditions in experiments. Second, the interpretation of multiple tests of a hypothesis is clarified. Only when interest focuses on any, rather than each, of N possible responses is it appropriate to adjust criteria for statistical significance of the results. Finally, a misunderstanding is corrected about a disadvantage of large experiments (Wiley, 2003). Experiments with large samples raise the possibility of small, but statistically significant, biases even after randomization of treatments. Because these small biases are difficult for experimenters and readers to notice, large experiments demonstrating small effects require special scrutiny. Such experiments are justified only when they involve minimal human intervention and maximal standardization. Justifications for the inevitable trade-offs in experimental design require careful attention when reporting any experiment.

  14. Book review. Design for Care: Innovating Healthcare Experience

    Directory of Open Access Journals (Sweden)

    Manuela Aguirre Ulloa

    2014-12-01

    Full Text Available Adapted from a review on the same book published by The Design Observer Group on April 4th, 2014. You can access the original publication online at http://designobserver.com/feature/design-for-care/38382/ Peter Jones´ recently published book represents a timely and comprehensive view of the value design brings to healthcare innovation. The book uses an empathic user story that conveys emotions and life to a structure that embraces the different meanings of Design for Care: Spanning from caring at the personal level to large-scale caring systems. The author has a main objective for each of its three main target audiences: Designers, companies and healthcare teams. Firstly, it allows designers to understand healthcare in a holistic and patient-centered way, breaking down specialized silos. Secondly, it shows how to design better care experiences across care continuums. Consequently, for companies serving the healthcare sector, the book presents how to humanize information technology (IT and services and meet the needs of health seekers. Finally, the book aims to inform healthcare teams (clinical practitioners and administrators the value design brings in research, co-creation and implementation of user and organizational experiences. It also proposes that healthcare teams learn and adopt design and systems thinking techniques so their innovation processes can be more participatory, holistic and user-centered.

  15. Structural Design Feasibility Study for the Global Climate Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Lewin,K.F.; Nagy, J.

    2008-12-01

    Neon, Inc. is proposing to establish a Global Change Experiment (GCE) Facility to increase our understanding of how ecological systems differ in their vulnerability to changes in climate and other relevant global change drivers, as well as provide the mechanistic basis for forecasting ecological change in the future. The experimental design was initially envisioned to consist of two complementary components; (A) a multi-factor experiment manipulating CO{sub 2}, temperature and water availability and (B) a water balance experiment. As the design analysis and cost estimates progressed, it became clear that (1) the technical difficulties of obtaining tight temperature control and maintaining elevated atmospheric carbon dioxide levels within an enclosure were greater than had been expected and (2) the envisioned study would not fit into the expected budget envelope if this was done in a partially or completely enclosed structure. After discussions between NEON management, the GCE science team, and Keith Lewin, NEON, Inc. requested Keith Lewin to expand the scope of this design study to include open-field exposure systems. In order to develop the GCE design to the point where it can be presented within a proposal for funding, a feasibility study of climate manipulation structures must be conducted to determine design approaches and rough cost estimates, and to identify advantages and disadvantages of these approaches including the associated experimental artifacts. NEON, Inc requested this design study in order to develop concepts for the climate manipulation structures to support the NEON Global Climate Experiment. This study summarizes the design concepts considered for constructing and operating the GCE Facility and their associated construction, maintenance and operations costs. Comparisons and comments about experimental artifacts, construction challenges and operational uncertainties are provided to assist in selecting the final facility design. The overall goal

  16. 野外叶面积指数自动测量仪器设计及应用试验%Design and applied experiment of long time series leaf area index measuring instrument

    Institute of Scientific and Technical Information of China (English)

    温一博; 范文义; 常颖; 李明泽; 于宏洲; 王宇航

    2015-01-01

    Leaf area index (LAI) objectively describes the number of leaves, is a key parameter controlling many biological and physical processes associated with vegetation on the earth’s surface, such as photosynthesis, carbon and nutrient cycle, radiative balance, evapotranspiration, and rainfall interception. Thus, LAI is widely used in models of ecology, hydrology, biogeochemistry and climate. Accurately measuring LAI is one of the hotspots in the study of earth science. Long time series LAI is an important input parameter of daily forest carbon and water cycle models, and its accuracy directly influences the result of the model simulation. At present, site measurements of Long time series LAI data expend a large number of repeated manual operations, and produce a great error in the operation. An instrument, with which LAI can be indirectly measured in the field for a long time, was designed in this study. This instrument consisted of solar power system, single-chip microcomputer control system and time control system. The single-chip microcomputer control system was mainly made up of Arduino UNO microcontroller, clock module, storage module, display monitor module steering engine, light intensity sensor, temperature sensor and humidity sensor. In order to prevent the extra light intensity of a single direction that affected the accuracy of measurement, the measuring time was set at 7:00-8:00 and 16:00-17:00 by the time-control system. The solar batteries provided durable electric energy for the instrument. The vertical and horizontal rotary servos were controlled by microcontroller which drove the light sensor to record the light intensity from different solar zenith angles. It can record the light intensity from the zenith angles of 0°, 12°, 24°, 36°, 48°, 60°. Two instruments were used at the same time to measure LAI. One instrument was placed under the forest canopy in a plot to measure light intensity through the canopy, another instrument was placed in some

  17. Optimal Design of Shock Tube Experiments for Parameter Inference

    KAUST Repository

    Bisetti, Fabrizio

    2014-01-06

    We develop a Bayesian framework for the optimal experimental design of the shock tube experiments which are being carried out at the KAUST Clean Combustion Research Center. The unknown parameters are the pre-exponential parameters and the activation energies in the reaction rate expressions. The control parameters are the initial mixture composition and the temperature. The approach is based on first building a polynomial based surrogate model for the observables relevant to the shock tube experiments. Based on these surrogates, a novel MAP based approach is used to estimate the expected information gain in the proposed experiments, and to select the best experimental set-ups yielding the optimal expected information gains. The validity of the approach is tested using synthetic data generated by sampling the PC surrogate. We finally outline a methodology for validation using actual laboratory experiments, and extending experimental design methodology to the cases where the control parameters are noisy.

  18. Designing Simulation Experiments with Controllable and Uncontrollable Factors

    DEFF Research Database (Denmark)

    Dehlendorff, Christian; Kulahci, Murat; Andersen, Klaus Kaae

    In this study we propose a new method for designing computer experiments inspired by the split plot designs used in physical experimentation. The basic layout is that each set of controllable factor settings corresponds to a whole plot for which a number of subplots, each corresponding to one...... combination of settings of the uncontrollable factors, is employed. The caveat is a desire that the subplots within each whole plot cover the design space uniformly. A further desire is that in the combined design, where all experimental runs are considered at once, the uniformity of the design space coverage...... should be guaranteed. Our proposed method allows for a large number of uncontrollable and controllable settings to be run in a limited number of runs while uniformly covering the design space for the uncontrollable factors....

  19. The Prototype as Mediator of Embodied Experience in Fashion Design

    DEFF Research Database (Denmark)

    Kristensen, Tore; Ræbild, Ulla

    For many people fashion design is associated with shows and aesthetic appearances of a somewhat superficial nature. However, fashion design is much more. This paper sets out from a work in progress which uses theory on embodied knowledge to understand how fashion design processes take place....... It is based on photographic material obtained in design studios during prototype development. The prototype is considered a core fashion design competence. Yet, companies increasingly cut costs by reducing or omitting prototype development. We intend to show, how the garment prototype acts as an important...... mediator of embodied experience between designer and user. That is, by use of a cognitive approach, we explore how mediation is enabled to occur through the recurrent patterns of sensorimotor actions that surround the garment prototype development. Tentative findings indicate, that eliminating...

  20. The prototype as mediator of embodied experience in fashion design

    DEFF Research Database (Denmark)

    Ræbild, Ulla; Kristensen, Tore

    2016-01-01

    For many people fashion design is associated with shows and aesthetic appearances of a somewhat superficial nature. However, fashion design is much more. This paper sets out from a work in progress which uses theory on embodied knowledge to understand how fashion design processes take place....... It is based on photographic material obtained in design studios during prototype development. The prototype is considered a core fashion design competence. Yet, companies increasingly cut costs by reducing or omitting prototype development. We intend to show, how the garment prototype acts as an important...... mediator of embodied experience between designer and user. That is, by use of a cognitive approach, we explore how mediation is enabled to occur through the recurrent patterns of sensorimotor actions that surround the garment prototype development. Tentative findings indicate, that eliminating...

  1. MODELING AND ROBUST DESIGN OF REMANUFACTURING LOGISTICS NETWORKS BASED ON DESIGN OF EXPERIMENT

    Institute of Scientific and Technical Information of China (English)

    Xia Shouchang; Xi Lifeng; Hu Zongwu

    2004-01-01

    The uncertainty of time, quantity and quality of recycling products leads to the bad stability and flexibility of remanufacturing logistics networks, and general design only covered the minimizing logistics cost, thus, robust design is presented here to solve the uncertainty. The mathematical model of remanufacturing logistics networks is built based on stochastic distribution of uncontrollable factors, and robust objectives are presented. The integration of mathematical simulation and design of experiment method is performed to do sensitive analysis. The influence of each factor and level on the system is investigated, and the main factors and optimum combination are studied. The numbers of factors, level of each factor and design process of experiment are investigated as well. Finally, the process of robust design based on design of experiment is demonstrated by a detailed example.

  2. A Model for Designing Adaptive Laboratory Evolution Experiments

    DEFF Research Database (Denmark)

    LaCroix, Ryan A.; Palsson, Bernhard O.; Feist, Adam M.

    2017-01-01

    The occurrence of mutations is a cornerstone of the evolutionary theory of adaptation, capitalizing on the rare chance that a mutation confers a fitness benefit. Natural selection is increasingly being leveraged in laboratory settings for industrial and basic science applications. Despite...... increasing deployment, there are no standardized procedures available for designing and performing adaptive laboratory evolution (ALE) experiments. Thus, there is a need to optimize the experimental design, specifically for determining when to consider an experiment complete and for balancing outcomes...... adaptive laboratory evolution can achieve....

  3. Designing Meaningful Game Experiences for Rehabilitation and Sustainable Mobility Settings

    Directory of Open Access Journals (Sweden)

    Silvia Gabrielli

    2014-03-01

    Full Text Available This paper presents the approach followed in two ongoing research projects aimed to designing meaningful game-based experiences to support home rehabilitation, eco-sustainable mobility goals and more in general better daily lifestyles. We first introduce the need for designing meaningful game-based experiences that are well-connected to the relevant non-game settings and can be customized by/for users, then, we show examples of how this approach can be realized in the rehabilitation and sustainable mobility contexts.

  4. Neutron Measurements in Small MagLIF Experiments on OMEGA

    Science.gov (United States)

    Glebov, V. Yu.; Barnak, D. H.; Davies, J. R.; Knauer, J. P.; Betti, R.; Regan, S. P.; Sangster, T. C.; Campbell, E. M.

    2016-10-01

    The Laboratory for Laser Energetics (LLE) is participating in laser-driven magnetized linear inertial fusion (MagLIF) research on the OMEGA Laser System in partnership with Sandia as part of ARPA-E's ALPHA Program. In the current OMEGA setup, a CH cylindrical tube filled with D2 gas is compressed by 40 laser beams, preheated by one of the beams, and an axial magnetic field is applied to limit electron heat loss. Two copper coils provide 10-T magnetic fields. A neutron time-of-flight (nTOF) detector has been designed, fabricated, and calibrated to diagnose primary D-D fusion neutron yield in the range of 1 ×107 to 5 ×109 and ion temperature from 2 to 8 keV. The design details and calibration results of these nTOF detectors will be presented together with neutron measurement results from recent laser-driven MagLIF experiments on OMEGA. The information, data, or work presented herein was funded in part by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award Number DE-AR0000568, and the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944.

  5. Design and experiment of crop structural parameters automatic measurement system%农作物冠层结构参数自动测量系统设计与试验

    Institute of Scientific and Technical Information of China (English)

    屈永华; 王锦地; 董健; 姜富斌

    2012-01-01

    The presented work aims to develop an automatic measurement system to collect crop parameters. In this paper, the structure parameters of land surface crops are considered. Crop structural parameters, such as leaf area index(LAI) and average leaf angle(ALA), are the main factors that can effect the solar energy re-assignment in the canopy. The traditional method to measure such parameters for crops, e.g. Maize and wheat, is relied on the handy instrument, so it is difficulty to carry out the measurement on the large spatial region and on the long time series. An automatic measuring system which is designed on the basis of wireless sensors network(WSN) is present in this paper. The system is comprised of three types of node, I.e. Two solar irradiance measurement nodes which are deployed beneath and above the canopy respectively, a sink node which is used to collect data from the measurement nodes, and the last type is a route node which is acted as a repeater of wireless communication. Canopy structural parameters can be calculated from the direct transmittance which is the ratio of sun radiation captured by the measurement node beneath and above the canopy on different sun altitude angles. Numeric simulation and the field preliminary validation results showed that the designed system could detect the directional canopy transmittance which is the basis to calculate the target parameters. And the further validation results revealed that the measured LAI values between LAI2000 instrument and our propose measurement system had high correlation coefficient and the calculated average leaf angles were very proximity to the theoretical values. So it is promising in the agriculture application to utilize the proposed system in measuring the crop structural parameters, and it can be an efficient way to measure such parameters in the large spatial region and on the long time series automatically.%农作物冠层的结构参数,如叶面积指数与平均叶倾角,是影响

  6. A Bubble Mixture Experiment Project for Use in an Advanced Design of Experiments Class

    Science.gov (United States)

    Steiner, Stefan H.; Hamada, Michael; White, Bethany J.Giddings; Kutsyy, Vadim; Mosesova, Sofia; Salloum, Geoffrey

    2007-01-01

    This article gives an example of how student-conducted experiments can enhance a course in the design of experiments. We focus on a project whose aim is to find a good mixture of water, soap and glycerin for making soap bubbles. This project is relatively straightforward to implement and understand. At its most basic level the project introduces…

  7. The buffer/container experiment design and construction report

    Energy Technology Data Exchange (ETDEWEB)

    Chandler, N.A.; Wan, A.W.L.; Roach, P.J

    1998-03-01

    The Buffer/Container Experiment was a full-scale in situ experiment, installed at a depth of 240 m in granitic rock at AECL's Underground Research Laboratory (URL). The experiment was designed to examine the performance of a compacted sand-bentonite buffer material under the influences of elevated temperature and in situ moisture conditions. Buffer material was compacted in situ into a 5-m-deep, 1.24-m-diameter borehole drilled into the floor of an excavation. A 2.3-m long heater, representative of a nuclear fuel waste container, was placed within the buffer, and instrumentation was installed to monitor changes in buffer moisture conditions, temperature and stress. The experiment was sealed at the top of the borehole and restrained against vertical displacement. Instrumentation in the rock monitored pore pressures, temperatures and rock displacement. The heater was operated at a constant power of 1200 W, which provided a heater skin temperature of approximately 85 degrees C. Experiment construction and installation required two years, followed by two and a half years of heater operation and two years of monitoring the rock conditions during cooling. The construction phase of the experiment included the design, construction and testing of a segmental heater and controller, geological and hydrogeological characterization of the rock, excavation of the experiment room, drilling of the emplacement borehole using high pressure water, mixing and in situ compaction of buffer material, installation of instrumentation in the rock, buffer and on the heater, and the construction of concrete curb and steel vertical restraint system at the top of emplacement borehole. Upon completion of the experiment, decommissioning sampling equipment was designed and constructed and sampling methods were developed which allowed approximately 2000 samples of buffer material to be taken over a 12-day period. Quality assurance procedures were developed for all aspects of experiment

  8. Measurement reduction method for the Millikan oil-drop experiment

    Science.gov (United States)

    Li, Yingzi; Zhang, Liwen; Shan, Guanqiao; Li, Jin; Cui, Huaiyang; Chen, Ziyu

    2015-09-01

    To overcome the shortcomings of the measurement procedure used for the Millikan oil-drop experiment course, this paper suggests a measurement reduction method based on simplification of the conventional formula. In this method, only the voltage and the fall time are required to be recorded. This method can also simplify the analysis and the measurement error of the experiment and give proper parameter intervals, which results in a small measurement error. A solution is conducted to calculate the value of the elementary charge, and this solution verifies the measurement reduction method.

  9. Measuring Instructional Differentiation in a Large-Scale Experiment

    Science.gov (United States)

    Williams, Ryan T.; Swanlund, Andrew; Miller, Shazia; Konstantopoulos, Spyros; Eno, Jared; van der Ploeg, Arie; Meyers, Coby

    2014-01-01

    This study operationalizes four measures of instructional differentiation: one for Grade 2 English language arts (ELA), one for Grade 2 mathematics, one for Grade 5 ELA, and one for Grade 5 mathematics. Our study evaluates their measurement properties of each measure in a large field experiment: the Indiana Diagnostic Assessment Tools Study, which…

  10. Best Measuring Time for a Millikan Oil Drop Experiment

    Science.gov (United States)

    Kapusta, J. I.

    1975-01-01

    In a Millikan oil drop experiment, there is a best measuring time for observing the drop, due to Brownian motion of the drop and the experimenter's reaction time. Derives an equation for the relative error in the measurement of the drop's excess charge, and obtains a formula for the best measuring time. (Author/MLH)

  11. Diseño de sistemas de medición de desempeño de proveedores: experiencias de un caso de estudio Design of supplier performance measurement systems: experiences from an action research

    Directory of Open Access Journals (Sweden)

    Nicole Suclla Fernandez

    2012-01-01

    Full Text Available La evaluación de los proveedores es importante para las organizaciones debido al papel preponderante que éstos cumplen en la dinámica de las cadenas de suministros y a la importancia estratégica que las funciones de compra tienen a raíz de la tercerización de los procesos que no forman parte del know-how de la empresa. No obstante, la literatura académica carece de trabajos concernientes al diseño e implementación de sistemas de medición de desempeño de proveedores (SMDP. En ese contexto, este artículo presenta los factores más importantes del diseño de un SMDP, resaltando, a través de un caso de estudio, los cuidados y recomendaciones que deben ser considerados. Además del detalle del método y los resultados de su aplicación, el artículo presenta el análisis de los procesos y atributos que definen el diseño del SMDP propuesto.The evaluation of suppliers’ performance is important for organizations because of the imperative role they play in the supply chains and the importance that purchasing functions have due to the outsourcing of activities which are not part of the company’s know-how. There is a need to work on the identification of practical problems concerning the design and implementation of supplier performance measurement systems (SPMS. This paper presents the most important factors in designing and implementing such systems through an action research in a multinational media enterprise. In addition to the details of the method and results of its application, the paper presents an analysis of processes and attributes that define the design of the proposed system. The authors aim to contribute to the academic literature in providing practical issues regarding SPMS.

  12. Measuring slit width and separation in a diffraction experiment

    Energy Technology Data Exchange (ETDEWEB)

    Gan, K K; Law, A T [Department of Physics, Ohio State University, Columbus, OH 43210 (United States)], E-mail: gan@mps.ohio-state.edu

    2009-11-15

    We present a procedure for measuring slit width and separation in single- and double-slit diffraction experiments. Intensity spectra of diffracted laser light are measured with an optical sensor (PIN diode). Slit widths and separations are extracted by fitting to the measured spectra. We present a simple fitting procedure to account for the integration (averaging) of light across the finite sensor aperture. This experiment provides students with a quantitative, in-depth verification of diffraction theory, as well as hands-on experience in sophisticated fitting methods.

  13. Measurement of Fast Neutron Rate for NEOS Experiment

    CERN Document Server

    Ko, Y J; Han, B Y; Jang, C H; Jeon, E J; Joo, K K; Kim, B R; Kim, H J; Kim, H S; Kim, Y D; Lee, Jaison; Lee, J Y; Lee, M H; Oh, Y M; Park, H K; Park, H S; Park, K S; Seo, K M; Siyeon, Kim; Sun, G M

    2016-01-01

    The fast neutron rate is measured at the site of NEOS experiment, a short baseline neutrino experiment located in a tendon gallery of a commercial nuclear power plant, using a 0.78-liter liquid scintillator detector. A pulse shape discrimination technique is used to identify neutron signals. The measurements are performed during the nuclear reactor-on and off periods and found to be ~20 per day for both periods. The fast neutron rate is also measured at an overground site with a negligible overburden and is found to be ~100 times higher than that at the NEOS experiment site.

  14. The Prototype as Mediator of Embodied Experience in Fashion Design

    DEFF Research Database (Denmark)

    Kristensen, Tore; Ræbild, Ulla

    . It is based on photographic material obtained in design studios during prototype development. The prototype is considered a core fashion design competence. Yet, companies increasingly cut costs by reducing or omitting prototype development. We intend to show, how the garment prototype acts as an important...... mediator of embodied experience between designer and user. That is, by use of a cognitive approach, we explore how mediation is enabled to occur through the recurrent patterns of sensorimotor actions that surround the garment prototype development. Tentative findings indicate, that eliminating...

  15. Design of Experiment Using Simulation of a Discrete Dynamical System

    Directory of Open Access Journals (Sweden)

    Mašek Jan

    2016-12-01

    Full Text Available The topic of the presented paper is a promising approach to achieve optimal Design of Experiment (DoE, i.e. spreading of points within a design domain, using a simulation of a discrete dynamical system of interacting particles within an n-dimensional design space. The system of mutually repelling particles represents a physical analogy of the Audze-Eglājs (AE optimization criterion and its periodical modification (PAE, respectively. The paper compares the performance of two approaches to implementation: a single-thread process using the JAVA language environment and a massively parallel solution employing the nVidia CUDA platform.

  16. Radiometer experiment for the aeroassist flight experiment. [Thermal protection data for Orbital Transfer Vehicle design

    Science.gov (United States)

    Davy, W. C.; Park, C.; Arnold, J. O.; Balakrishnan, A.

    1985-01-01

    A forthcoming NASA flight experiment is described that provides an opportunity to obtain a large base of radiometric data for high-altitude, high-velocity thermochemically nonequilibrated-flow conditions. As a preliminary to the design of a radiometer for this experiment, an approximate method for predicting both equilibrium and nonequilibrium radiative surface fluxes is described. Spectral results for one trajectory state, a velocity of 10 km/sec at an altitude of 85 km, are presented. These results are then used to develop some of the instrument parameters that will be needed for designing of the three genre of radiometers that are proposed for this experiment.

  17. Optimizing an experimental design for an electromagnetic experiment

    Science.gov (United States)

    Roux, Estelle; Garcia, Xavier

    2013-04-01

    Most of geophysical studies focus on data acquisition and analysis, but another aspect which is gaining importance is the discussion on acquisition of suitable datasets. This can be done through the design of an optimal experiment. Optimizing an experimental design implies a compromise between maximizing the information we get about the target and reducing the cost of the experiment, considering a wide range of constraints (logistical, financial, experimental …). We are currently developing a method to design an optimal controlled-source electromagnetic (CSEM) experiment to detect a potential CO2 reservoir and monitor this reservoir during and after CO2 injection. Our statistical algorithm combines the use of linearized inverse theory (to evaluate the quality of one given design via the objective function) and stochastic optimization methods like genetic algorithm (to examine a wide range of possible surveys). The particularity of our method is that it uses a multi-objective genetic algorithm that searches for designs that fit several objective functions simultaneously. One main advantage of this kind of technique to design an experiment is that it does not require the acquisition of any data and can thus be easily conducted before any geophysical survey. Our new experimental design algorithm has been tested with a realistic one-dimensional resistivity model of the Earth in the region of study (northern Spain CO2 sequestration test site). We show that a small number of well distributed observations have the potential to resolve the target. This simple test also points out the importance of a well chosen objective function. Finally, in the context of CO2 sequestration that motivates this study, we might be interested in maximizing the information we get about the reservoir layer. In that case, we show how the combination of two different objective functions considerably improve its resolution.

  18. DESIGNING AND MEASURING CAPABILITY. A NEW PERSPECTIVE

    Directory of Open Access Journals (Sweden)

    Ovidiu COCENESCU

    2013-01-01

    Full Text Available The concept of capability has long been a topic for debate among planners. The main benefit brought by it is that of ensuring the connection between objectives and necessary financial resources. Thus, capability is a median element within the process of integrated planning. In this context, there are sceptics who consider that capability cannot be measured. However, this article aims at presenting a pattern and a formula for measuring and interpreting the level of capability.

  19. Electrostatic design of the barrel CRID (Cherenkov Ring Imaging Detector) and associated measurements

    Energy Technology Data Exchange (ETDEWEB)

    Abe, K.; Hasegawa, K.; Suekane, F.; Yuta, H. (Tohoku Univ., Sendai (Japan). Dept. of Physics); Antilogus, P.; Aston, D.; Bienz, T.; Bird, F.; Dunwoodie, W.; Hallewell, G.; Kawahara, H.; Kwon, Y.; Leith, D.W.G.S.; Muller, D.; Nagamine, T.; Pavel, T.; Ratcliff, B.; Rensing, P.; Schultz, D.; Shapiro, S.; Simopoulos, C.; Solodov, E.; Toge, N.; Va' Vra, J. Williams, H. (Stanford Linear Accelerator Center, Menlo Park, CA (US

    1990-04-01

    We report on the electrostatic design and related measurements of the barrel Cherenkov Ring Imaging Detector for the Stanford Large Detector experiment at the Stanford Linear Accelerator Center Linear Collider. We include test results of photon feedback in TMAE-laden gas, distortion measurements in the drift boxes and corona measurements. 13 refs., 21 figs.

  20. Electrostatic design of the barrel CRID (Cherenkov Ring Imaging Detector) and associated measurements

    Energy Technology Data Exchange (ETDEWEB)

    Abe, K.; Hasegawa, K.; Suekane, F.; Yuta, H. (Tohoku Univ., Sendai (Japan). Dept. of Physics); Antilogus, P.; Aston, D.; Bienz, T.; Bird, F.; Dunwoodie, W.; Hallewell, G.; Kawahara, H.; Kwon, Y.; Leith, D.W.G.S.; Muller, D.; Nagamine, T.; Pavel, T.; Ratcliff, B.; Rensing, P.; Schultz, D.; Shapiro, S.; Simopoulos, C.; Solodov, E.; Toge, N.; Va' Vra, J. Williams, H. (Stanford Linear Accelerator Center, Menlo Park, CA (US

    1990-04-01

    We report on the electrostatic design and related measurements of the barrel Cherenkov Ring Imaging Detector for the Stanford Large Detector experiment at the Stanford Linear Accelerator Center Linear Collider. We include test results of photon feedback in TMAE-laden gas, distortion measurements in the drift boxes and corona measurements. 13 refs., 21 figs.

  1. Simulation Experiments in Practice : Statistical Design and Regression Analysis

    NARCIS (Netherlands)

    Kleijnen, J.P.C.

    2007-01-01

    In practice, simulation analysts often change only one factor at a time, and use graphical analysis of the resulting Input/Output (I/O) data. Statistical theory proves that more information is obtained when applying Design Of Experiments (DOE) and linear regression analysis. Unfortunately, classic t

  2. From Content to Context: Videogames as Designed Experience

    Science.gov (United States)

    Squire, Kurt

    2006-01-01

    Interactive immersive entertainment, or videogame playing, has emerged as a major entertainment and educational medium. As research and development initiatives proliferate, educational researchers might benefit by developing more grounded theories about them. This article argues for framing game play as a "designed experience." Players'…

  3. A system for designing and simulating particle physics experiments

    Science.gov (United States)

    Żelazny, Roman; Strzałkowski, Piotr

    1987-01-01

    In view of the rapid development of experimental facilities and their costs, the systematic design and preparation of particle physics experiments have become crucial. A software system is proposed as an aid for the experimental designer, mainly for experimental geometry analysis and experimental simulation. The following model is adopted: the description of an experiment is formulated in a language (here called XL) and put by its processor in a data base. The language is based on the entity-relationship-attribute approach. The information contained in the data base can be reported and analysed by an analyser (called XA) and modifications can be made at any time. In particular, the Monte Carlo methods can be used in experiment simulation for both physical phenomena in experimental set-up and detection analysis. The general idea of the system is based on the design concept of ISDOS project information systems. The characteristics of the simulation module are similar to those of the CERN Geant system, but some extensions are proposed. The system could be treated as a component of a greater, integrated software environment for the design of particle physics experiments, their monitoring and data processing.

  4. Experiences of Computer Science Curriculum Design: A Phenomenological Study

    Science.gov (United States)

    Sloan, Arthur; Bowe, Brian

    2015-01-01

    This paper presents a qualitative study of 12 computer science lecturers' experiences of curriculum design of several degree programmes during a time of transition from year-long to semesterised courses, due to institutional policy change. The background to the study is outlined, as are the reasons for choosing the research methodology. The main…

  5. Designing learning experiences for teachers...and students.

    Science.gov (United States)

    Munson, P J

    1983-12-01

    Guidelines for helping medical educators make decisions about designing learning activities are very few and non-specific. The author describes and illustrates four concepts that govern those decisions: personal anchor, objectifying the subjective experience, developing knowledge, and collective wisdom. Medical educators at the Medical College of Virginia have used these concepts to plan and implement their teaching activities.

  6. Experiences of Computer Science Curriculum Design: A Phenomenological Study

    Science.gov (United States)

    Sloan, Arthur; Bowe, Brian

    2015-01-01

    This paper presents a qualitative study of 12 computer science lecturers' experiences of curriculum design of several degree programmes during a time of transition from year-long to semesterised courses, due to institutional policy change. The background to the study is outlined, as are the reasons for choosing the research methodology. The main…

  7. Designing Nursing Simulation Clinical Experiences to Promote Critical Inquiry

    Science.gov (United States)

    Beattie, Bev; Koroll, Donna; Price, Susan

    2010-01-01

    The use of high fidelity simulation (HFS) learning opportunities in nursing education has received increased attention in the literature. This article describes the design of a systematic framework used to promote critical inquiry and provide meaningful simulation clinical experiences for second year nursing students. Critical inquiry, as defined…

  8. [Limb-length measurements using wooden boards: an accurate and experience-independent method

    NARCIS (Netherlands)

    Pakvis, D.F.M.; Jaarsma, R.L.; Kampen, A. van

    2003-01-01

    OBJECTIVE: To determine the precision and reliability of the indirect limb-length measurement, and the inter-observer variance between doctors differing in level of experience. DESIGN: Descriptive. METHOD: Indirect limb-length measurement by placing 0.5 cm-thick wooden boards under the foot of the s

  9. Design, manufacture and measurements of permanent dipole magnets for DIRAC

    CERN Document Server

    Vorozhtsov, A; Kasaei, S; Solodko, E; Thonet, P A; Tommasini, D

    2013-01-01

    The one of the aim of the DIRAC experiment is the observation of the long-lived π+π- atoms, using the proton beam of the CERN Proton Synchrotron [1]. Two dipole magnets are needed for the for the DIRAC experiment as high resolution spectrometers. The dipole magnet will be used to identify the long-lived atoms on the high level background of π+π- pairs produced simultaneously with π+π- atoms. The proposed design is a permanent magnet dipole with a mechanical aperture of 60 mm. The magnet, of a total physical length of 66 mm, is based on Sm2Co17 blocks and provides an integrated field strength of 24·10-3 T×m. The Sm2Co17 was chosen as a material for the permanent magnet blocks due to its radiation hardness and weaker temperature dependence. The magnetic field quality is determined by 2 ferromagnetic poles, aligned together with the permanent magnets blocks. The paper describes the design, manufacture and magnetic measurements of the magnets.

  10. Construction of a 21-Component Layered Mixture Experiment Design

    Energy Technology Data Exchange (ETDEWEB)

    Piepel, Gregory F.; Cooley, Scott K.; Jones, Bradley

    2004-09-22

    This paper describes the solution to a unique and challenging mixture experiment design problem involving: (1) 19 and 21 components for two different parts of the design, (2) many single-component and multi-component constraints, (3) augmentation of existing data, (4) a layered design developed in stages, and (5) a no-candidate-point optimal design approach. The problem involved studying the liquidus temperature of spinel crystals as a function of nuclear waste glass composition. The statistical objective was to develop an experimental design by augmenting existing glasses with new nonradioactive and radioactive glasses chosen to cover the designated nonradioactive and radioactive experimental regions. The existing 144 glasses were expressed as 19-component nonradioactive compositions and then augmented with 40 new nonradioactive glasses. These included 8 glasses on the outer layer of the region, 27 glasses on an inner layer, 2 replicate glasses at the centroid, and one replicate each of three existing glasses. Then, the 144 + 40 = 184 glasses were expressed as 21-component radioactive compositions and augmented with 5 radioactive glasses. A D-optimal design algorithm was used to select the new outer layer, inner layer, and radioactive glasses. Several statistical software packages can generate D-optimal experimental designs, but nearly all require a set of candidate points (e.g., vertices) from which to select design points. The large number of components (19 or 21) and many constraints made it impossible to generate the huge number of vertices and other typical candidate points. JMP(R) was used to select design points without candidate points. JMP uses a coordinate-exchange algorithm modified for mixture experiments, which is discussed in the paper.

  11. Electromagnetic sunscreen model: design of experiments on particle specifications.

    Science.gov (United States)

    Lécureux, Marie; Deumié, Carole; Enoch, Stefan; Sergent, Michelle

    2015-10-01

    We report a numerical study on sunscreen design and optimization. Thanks to the combined use of electromagnetic modeling and design of experiments, we are able to screen the most relevant parameters of mineral filters and to optimize sunscreens. Several electromagnetic modeling methods are used depending on the type of particles, density of particles, etc. Both the sun protection factor (SPF) and the UVB/UVA ratio are considered. We show that the design of experiments' model should include interactions between materials and other parameters. We conclude that the material of the particles is a key parameter for the SPF and the UVB/UVA ratio. Among the materials considered, none is optimal for both. The SPF is also highly dependent on the size of the particles.

  12. Experience in Design and Learning Approaches – Enhancing the Framework for Experience

    Directory of Open Access Journals (Sweden)

    Merja L.M. Bauters

    2017-06-01

    Full Text Available In design and learning studies, an increasing amount of attention has been paid to experience. Many design approaches relate experience to embodiment and phenomenology. The growth in the number of applications that use the Internet of Things (IoT has shifted human interactions from mobile devices and computers to tangible, material things. In education, the pressure to learn and update skills and knowledge, especially in work environments, has underlined the challenge of understanding how workers learn from reflection while working. These directions have been fuelled by research findings in the neurosciences, embodied cognition, the extended phenomenological–cognitive system and the role of emotions in decision-making and meaning making. The perspective on experience in different disciplines varies, and the aim is often to categorise experience. These approaches provide a worthwhile view of the importance of experience in learning and design, such as the recent emphasis on conceptual and epistemological knowledge creation. In pragmatism, experience plays a considerable role in research, art, communication and reflection. Therefore, I rely on Peirce’s communicative theory of signs and Dewey’s philosophy of experience to examine how experience is connected to reflection and therefore how it is necessarily tangible.

  13. Real cell overlay measurement through design based metrology

    Science.gov (United States)

    Yoo, Gyun; Kim, Jungchan; Park, Chanha; Lee, Taehyeong; Ji, Sunkeun; Jo, Gyoyeon; Yang, Hyunjo; Yim, Donggyu; Yamamoto, Masahiro; Maruyama, Kotaro; Park, Byungjun

    2014-04-01

    reference for overlay measurement and a high speed scan system. In this paper, we have demonstrated that direct overlay measurement in the cell area can distinguish the mismatch exactly, instead of using overlay mark. This experiment was carried out for several critical layer in DRAM and Flash memory, using DBM(Design Based Metrology) tool, NGR2170™.

  14. Explorations in Teaching Sustainable Design: A Studio Experience in Interior Design/Architecture

    Science.gov (United States)

    Gurel, Meltem O.

    2010-01-01

    This article argues that a design studio can be a dynamic medium to explore the creative potential of the complexity of sustainability from its technological to social ends. The study seeks to determine the impact of an interior design/architecture studio experience that was initiated to teach diverse meanings of sustainability and to engage the…

  15. Explorations in Teaching Sustainable Design: A Studio Experience in Interior Design/Architecture

    Science.gov (United States)

    Gurel, Meltem O.

    2010-01-01

    This article argues that a design studio can be a dynamic medium to explore the creative potential of the complexity of sustainability from its technological to social ends. The study seeks to determine the impact of an interior design/architecture studio experience that was initiated to teach diverse meanings of sustainability and to engage the…

  16. The design of serious games: a pedagogical experience inthe field of BA design studies

    Directory of Open Access Journals (Sweden)

    Joan Morales Moras

    2013-06-01

    Full Text Available Academic programs in Design have always faced the challenge of providing the best education in a sphere so changing as Design discipline itself. This is especially true within the current renewal of curricula derived from the implementation of the European Higher Education Area (EHEA and, to a much more general level, the adaptation of the discipline of Design to the new challenges posed by the Knowledge Society. In this context, we present the educational experience of a serious games design workshop, which has been conducted at the Universitat de Barcelona’s Design BA. This pedagogical activity emphasises on three aspects which we believe are fundamental to the current pedagogy of design: to give a more transverse view of this discipline, to value the role of Design as a means of innovation in today's Knowledge Society, and to rethink the social function of Design.

  17. High temperature hall effect measurement system design, measurement and analysis

    Science.gov (United States)

    Berkun, Isil

    A reliable knowledge of the transport properties of semiconductor materials is essential for the development and understanding of a number of electronic devices. In this thesis, the work on developing a Hall Effect measurement system with software based data acqui- sition and control for a temperature range of 300K-700K will be described. A system was developed for high temperature measurements of materials including single crystal diamond, poly-crystalline diamond, and thermoelectric compounds. An added capability for monitor- ing the current versus voltage behavior of the contacts was used for studying the influence of ohmic and non-ohmic contacts on Hall Effect measurements. The system has been primar- ily used for testing the transport properties of boron-doped single crystal diamond (SCD) deposited in a microwave plasma-assisted chemical vapor deposition (MPCVD) reactor [1]. Diamond has several outstanding properties that are of high interest for its development as an electronic material. These include a relatively wide band gap of 5.5 (eV), high thermal conductivity, high mobility, high saturation velocity, and a high breakdown voltage. For a temperature range of 300K-700K, IV curves, Hall mobilities and carrier concentrations are shown. Temperature dependent Hall effect measurements have shown carrier concentrations from below 1017cm --3 to approximately 1021 cm--3 with mobilities ranging from 763( cm2/V s) to 0.15(cm 2/V s) respectively. Simulation results have shown the effects of single and mixed carrier models, activation energies, effective mass and doping concentrations. These studies have been helpful in the development of single crystal diamond for diode applications. Reference materials of Ge and GaAs were used to test the Hall Effect system. The system was also used to characterize polycrystalline diamond deposited on glass for electrochemical applications, and Mg2(Si,Sn) compounds which are promising candidates of low-cost, light weight and non

  18. Validation of scaffold design optimization in bone tissue engineering: finite element modeling versus designed experiments.

    Science.gov (United States)

    Uth, Nicholas; Mueller, Jens; Smucker, Byran; Yousefi, Azizeh-Mitra

    2017-02-21

    This study reports the development of biological/synthetic scaffolds for bone tissue engineering (TE) via 3D bioplotting. These scaffolds were composed of poly(L-lactic-co-glycolic acid) (PLGA), type I collagen, and nano-hydroxyapatite (nHA) in an attempt to mimic the extracellular matrix of bone. The solvent used for processing the scaffolds was 1,1,1,3,3,3-hexafluoro-2-propanol. The produced scaffolds were characterized by scanning electron microscopy, microcomputed tomography, thermogravimetric analysis, and unconfined compression test. This study also sought to validate the use of finite-element optimization in COMSOL Multiphysics for scaffold design. Scaffold topology was simplified to three factors: nHA content, strand diameter, and strand spacing. These factors affect the ability of the scaffold to bear mechanical loads and how porous the structure can be. Twenty four scaffolds were constructed according to an I-optimal, split-plot designed experiment (DE) in order to generate experimental models of the factor-response relationships. Within the design region, the DE and COMSOL models agreed in their recommended optimal nHA (30%) and strand diameter (460 μm). However, the two methods disagreed by more than 30% in strand spacing (908 μm for DE; 601 μm for COMSOL). Seven scaffolds were 3D-bioplotted to validate the predictions of DE and COMSOL models (4.5-9.9 MPa measured moduli). The predictions for these scaffolds showed relative agreement for scaffold porosity (mean absolute percentage error of 4% for DE and 13% for COMSOL), but were substantially poorer for scaffold modulus (51% for DE; 21% for COMSOL), partly due to some simplifying assumptions made by the models. Expanding the design region in future experiments (e.g., higher nHA content and strand diameter), developing an efficient solvent evaporation method, and exerting a greater control over layer overlap could allow developing PLGA-nHA-collagen scaffolds to meet the mechanical requirements for

  19. Optimized design and analysis of sparse-sampling FMRI experiments.

    Science.gov (United States)

    Perrachione, Tyler K; Ghosh, Satrajit S

    2013-01-01

    Sparse-sampling is an important methodological advance in functional magnetic resonance imaging (fMRI), in which silent delays are introduced between MR volume acquisitions, allowing for the presentation of auditory stimuli without contamination by acoustic scanner noise and for overt vocal responses without motion-induced artifacts in the functional time series. As such, the sparse-sampling technique has become a mainstay of principled fMRI research into the cognitive and systems neuroscience of speech, language, hearing, and music. Despite being in use for over a decade, there has been little systematic investigation of the acquisition parameters, experimental design considerations, and statistical analysis approaches that bear on the results and interpretation of sparse-sampling fMRI experiments. In this report, we examined how design and analysis choices related to the duration of repetition time (TR) delay (an acquisition parameter), stimulation rate (an experimental design parameter), and model basis function (an analysis parameter) act independently and interactively to affect the neural activation profiles observed in fMRI. First, we conducted a series of computational simulations to explore the parameter space of sparse design and analysis with respect to these variables; second, we validated the results of these simulations in a series of sparse-sampling fMRI experiments. Overall, these experiments suggest the employment of three methodological approaches that can, in many situations, substantially improve the detection of neurophysiological response in sparse fMRI: (1) Sparse analyses should utilize a physiologically informed model that incorporates hemodynamic response convolution to reduce model error. (2) The design of sparse fMRI experiments should maintain a high rate of stimulus presentation to maximize effect size. (3) TR delays of short to intermediate length can be used between acquisitions of sparse-sampled functional image volumes to increase

  20. Orion EFT-1 Catalytic Tile Experiment Overview and Flight Measurements

    Science.gov (United States)

    Salazar, Giovanni; Amar, Adam; Hyatt, Andrew; Rezin, Marc D.

    2016-01-01

    This paper describes the design and results of a surface catalysis flight experiment flown on the Orion Multipurpose Crew Vehicle during Exploration Flight Test 1 (EFT1). Similar to previous Space Shuttle catalytic tile experiments, the present test consisted of a highly catalytic coating applied to an instrumented TPS tile. However, the present catalytic tile experiment contained significantly more instrumentation in order to better resolve the heating overshoot caused by the change in surface catalytic efficiency at the interface between two distinct materials. In addition to collecting data with unprecedented spatial resolution of the "overshoot" phenomenon, the experiment was also designed to prove if such a catalytic overshoot would be seen in turbulent flow in high enthalpy regimes. A detailed discussion of the results obtained during EFT1 is presented, as well as the challenges associated with data interpretation of this experiment. Results of material testing carried out in support of this flight experiment are also shown. Finally, an inverse heat conduction technique is employed to reconstruct the flight environments at locations upstream and along the catalytic coating. The data and analysis presented in this work will greatly contribute to our understanding of the catalytic "overshoot" phenomenon, and have a significant impact on the design of future spacecraft.

  1. Measuring user experience in digital gaming: theoretical and methodological issues

    Science.gov (United States)

    Takatalo, Jari; Häkkinen, Jukka; Kaistinen, Jyrki; Nyman, Göte

    2007-01-01

    There are innumerable concepts, terms and definitions for user experience. Few of them have a solid empirical foundation. In trying to understand user experience in interactive technologies such as computer games and virtual environments, reliable and valid concepts are needed for measuring relevant user reactions and experiences. Here we present our approach to create both theoretically and methodologically sound methods for quantification of the rich user experience in different digital environments. Our approach is based on the idea that the experience received from a content presented with a specific technology is always a result of a complex psychological interpretation process, which components should be understood. The main aim of our approach is to grasp the complex and multivariate nature of the experience and make it measurable. We will present our two basic measurement frameworks, which have been developed and tested in large data set (n=2182). The 15 measurement scales extracted from these models are applied to digital gaming with a head-mounted display and a table-top display. The results show how it is possible to map between experience, technology variables and the background of the user (e.g., gender). This approach can help to optimize, for example, the contents for specific viewing devices or viewing situations.

  2. Design of Residues Measurement Device of Uranium

    Institute of Scientific and Technical Information of China (English)

    SUI; Hong-zhi; XU; Zheng; LU; Wen-guang; HE; Li-xia; GAN; Lin

    2012-01-01

    <正>Nuclear materials will be deposited in the pipeline or various process equipment during the operation of nuclear facilities, such as dissolution reactor, because the recovery residue of uranium not dissolved, and a metal tubularis in the dissolution reactor cannot insert to the bottom of the container, so that part of the residual slag and the solution stored in the bottom of the reactor. When the equipment is used for treatment of nuclear material, it is difficult to put out all the nuclear material in the equipment. Therefore, measurement of these residues for nuclear material accountancy, the safe operation of the facilities,

  3. Experiment to measure oxygen opacity at high density and temperature

    Science.gov (United States)

    Keiter, Paul; Mussack, Katie; Orban, Chris; Colgan, James; Ducret, Jean-Eric; Fontes, Christopher J.; Guzik, Joyce Ann; Heeter, Robert F.; Kilcrease, Dave; Le Pennec, Maelle; Mancini, Roberto; Perry, Ted; Turck-Chièze, Sylvaine; Trantham, Matt

    2017-06-01

    In recent years, there has been a debate over the abundances of heavy elements (Z >2) in the solar interior. Recent solar atmosphere models [Asplund 2009] find a significantly lower abundance for C, N, and O compared to models used roughly a decade ago. This discrepancy has led to an investigation of opacities through laboratory experiments and improved opacity models for many of the larger contributors to the sun’s opacity, including iron and oxygen. Recent opacity measurements of iron disagree with opacity model predictions [Bailey et al, 2015]. Although these results are still controversial, repeated scrutiny of the experiment and data has not produced a conclusive reason for the discrepancy. New models have been implemented in the ATOMIC opacity code for C, O and Fe to address the solar abundance issue [Colgan, 2013]. Armstrong et al [2014] have also implemented changes in the ATOMIC code for low-Z elements. However, no data currently exists to test the low-Z material models in the regime relevant to the solar convection zone. We present an experimental design using the opacity platform developed at the National Ignition Facility to study the oxygen opacity at densities and temperatures near the solar convection zone conditions.This work is funded by the U.S. DOE, through the NNSA-DS and SC-OFES Joint Program in HEDPLP, grant No. DE-NA0001840, and the NLUF Program, grant No. DE-NA0000850, and through LLE, University of Rochester by the NNSA/OICF under Agreement No. DE-FC52-08NA28302.

  4. Electrical conductivity measurements from the STRATCOM 8 experiment

    Science.gov (United States)

    Mitchell, J. D.; Ho, K. J.; Half, L. C.; Croskey, C. L.; Olsen, R. O.

    1978-01-01

    A blunt probe experiment for measuring electrical conductivity was flown with the STRATCOM 8 instrument package. Data were obtained by the instrument throughout the entire measurement period. A preliminary analysis of the data indicates an enhancement in conductivity associated with the krypton discharge ionization lamp, particularly in negative conductivity. The conductivity values and their altitude dependence are consistent with previous balloon and rocket results.

  5. Design Overview of the DM Radio Pathfinder Experiment

    CERN Document Server

    Silva-Feaver, Maximiliano; Cho, Hsiao-Mei; Dawson, Carl; Graham, Peter; Irwin, Kent; Kuenstner, Stephen; Li, Dale; Mardon, Jeremy; Moseley, Harvey; Mule, Richard; Phipps, Arran; Rajendran, Surjeet; Steffen, Zach; Young, Betty

    2016-01-01

    We introduce the DM Radio, a dual search for axion and hidden photon dark matter using a tunable superconducting lumped-element resonator. We discuss the prototype DM Radio Pathfinder experiment, which will probe hidden photons in the 500 peV (100 kHz)-50 neV (10 MHz) mass range. We detail the design of the various components: the LC resonant detector, the resonant frequency tuning procedure, the differential SQUID readout circuit, the shielding, and the cryogenic mounting structure. We present the current status of the pathfinder experiment and illustrate its potential science reach in the context of the larger experimental program.

  6. Design of experiments applications in bioprocessing: concepts and approach.

    Science.gov (United States)

    Kumar, Vijesh; Bhalla, Akriti; Rathore, Anurag S

    2014-01-01

    Most biotechnology unit operations are complex in nature with numerous process variables, feed material attributes, and raw material attributes that can have significant impact on the performance of the process. Design of experiments (DOE)-based approach offers a solution to this conundrum and allows for an efficient estimation of the main effects and the interactions with minimal number of experiments. Numerous publications illustrate application of DOE towards development of different bioprocessing unit operations. However, a systematic approach for evaluation of the different DOE designs and for choosing the optimal design for a given application has not been published yet. Through this work we have compared the I-optimal and D-optimal designs to the commonly used central composite and Box-Behnken designs for bioprocess applications. A systematic methodology is proposed for construction of the model and for precise prediction of the responses for the three case studies involving some of the commonly used unit operations in downstream processing. Use of Akaike information criterion for model selection has been examined and found to be suitable for the applications under consideration.

  7. SSSFD manipulator engineering using statistical experiment design techniques

    Science.gov (United States)

    Barnes, John

    1991-01-01

    The Satellite Servicer System Flight Demonstration (SSSFD) program is a series of Shuttle flights designed to verify major on-orbit satellite servicing capabilities, such as rendezvous and docking of free flyers, Orbital Replacement Unit (ORU) exchange, and fluid transfer. A major part of this system is the manipulator system that will perform the ORU exchange. The manipulator must possess adequate toolplate dexterity to maneuver a variety of EVA-type tools into position to interface with ORU fasteners, connectors, latches, and handles on the satellite, and to move workpieces and ORUs through 6 degree of freedom (dof) space from the Target Vehicle (TV) to the Support Module (SM) and back. Two cost efficient tools were combined to perform a study of robot manipulator design parameters. These tools are graphical computer simulations and Taguchi Design of Experiment methods. Using a graphics platform, an off-the-shelf robot simulation software package, and an experiment designed with Taguchi's approach, the sensitivities of various manipulator kinematic design parameters to performance characteristics are determined with minimal cost.

  8. Applying design of experiments to a compression refrigeration cycle

    Directory of Open Access Journals (Sweden)

    Nuno Ricardo Costa

    2015-12-01

    Full Text Available Refrigeration cycles are used in a large diversity of industrial and domestic (residential and non-residential equipment and their efficiency depend on several variables. To better understanding of how controllable variables impact on a compression refrigeration cycle efficiency, statistically designed experiments were conducted and data were analyzed. A quadratic polynomial model was fitted to Coefficient of Performance and variable settings to maximize cycle efficiency identified. Results give confidence to use the illustrated approach for refrigeration cycle design and operation improvement purposes.

  9. Beryllium ignition target design for indirect drive NIF experiments

    Science.gov (United States)

    Simakov, A. N.; Wilson, D. C.; Yi, S. A.; Kline, J. L.; Salmonson, J. D.; Clark, D. S.; Milovich, J. L.; Marinak, M. M.

    2016-03-01

    Beryllium (Be) ablator offers multiple advantages over carbon based ablators for indirectly driven NIF ICF ignition targets. These are higher mass ablation rate, ablation pressure and ablation velocity, lower capsule albedo, and higher thermal conductivity at cryogenic temperatures. Such advantages can be used to improve the target robustness and performance. While previous NIF Be target designs exist, they were obtained a long time ago and do not incorporate the latest improved physical understanding and models based upon NIF experiments. Herein, we propose a new NIF Be ignition target design at 1.45 MJ, 430 TW that takes all this knowledge into account.

  10. Scaling studies and conceptual experiment designs for NGNP CFD assessment

    Energy Technology Data Exchange (ETDEWEB)

    D. M. McEligot; G. E. McCreery

    2004-11-01

    The objective of this report is to document scaling studies and conceptual designs for flow and heat transfer experiments intended to assess CFD codes and their turbulence models proposed for application to prismatic NGNP concepts. The general approach of the project is to develop new benchmark experiments for assessment in parallel with CFD and coupled CFD/systems code calculations for the same geometry. Two aspects of the complex flow in an NGNP are being addressed: (1) flow and thermal mixing in the lower plenum ("hot streaking" issue) and (2) turbulence and resulting temperature distributions in reactor cooling channels ("hot channel" issue). Current prismatic NGNP concepts are being examined to identify their proposed flow conditions and geometries over the range from normal operation to decay heat removal in a pressurized cooldown. Approximate analyses have been applied to determine key non-dimensional parameters and their magnitudes over this operating range. For normal operation, the flow in the coolant channels can be considered to be dominant turbulent forced convection with slight transverse property variation. In a pressurized cooldown (LOFA) simulation, the flow quickly becomes laminar with some possible buoyancy influences. The flow in the lower plenum can locally be considered to be a situation of multiple hot jets into a confined crossflow -- with obstructions. Flow is expected to be turbulent with momentumdominated turbulent jets entering; buoyancy influences are estimated to be negligible in normal full power operation. Experiments are needed for the combined features of the lower plenum flows. Missing from the typical jet experiments available are interactions with nearby circular posts and with vertical posts in the vicinity of vertical walls - with near stagnant surroundings at one extreme and significant crossflow at the other. Two types of heat transfer experiments are being considered. One addresses the "hot channel" problem, if necessary

  11. Tokamak Fusion Core Experiment: design studies based on superconducting and hybrid toroidal field coils. Design overview

    Energy Technology Data Exchange (ETDEWEB)

    Flanagan, C.A. (ed.)

    1984-10-01

    This document is a design overview that describes the scoping studies and preconceptual design effort performed in FY 1983 on the Tokamak Fusion Core Experiment (TFCX) class of device. These studies focussed on devices with all-superconducting toroidal field (TF) coils and on devices with superconducting TF coils supplemented with copper TF coil inserts located in the bore of the TF coils in the shield region. Each class of device is designed to satisfy the mission of ignition and long pulse equilibrium burn. Typical design parameters are: major radius = 3.75 m, minor radius = 1.0 m, field on axis = 4.5 T, plasma current = 7.0 MA. These designs relay on lower hybrid (LHRH) current rampup and heating to ignition using ion cyclotron range of frequency (ICRF). A pumped limiter has been assumed for impurity control. The present document is a design overview; a more detailed design description is contained in a companion document.

  12. Diffusion imaging with stimulated echoes: signal models and experiment design

    CERN Document Server

    Alexander, Daniel C

    2013-01-01

    Purpose: Stimulated echo acquisition mode (STEAM) diffusion MRI can be advantageous over pulsed-gradient spin-echo (PGSE) for diffusion times that are long compared to $\\ttwo$. It is important therefore for biomedical diffusion imaging applications at 7T and above where $\\ttwo$ is short. However, imaging gradients in the STEAM sequence contribute much greater diffusion weighting than in PGSE, but are often ignored during post-processing. We demonstrate here that this can severely bias parameter estimates. Method: We present models for the STEAM signal for free and restricted diffusion that account for crusher and slice-select (butterfly) gradients to avoid such bias. The butterfly gradients also disrupt experiment design, typically by skewing gradient-vectors towards the slice direction. We propose a simple compensation to the diffusion gradient vector specified to the scanner that counterbalances the butterfly gradients to preserve the intended experiment design. Results: High-field data fixed monkey brain e...

  13. Statistical design of quantitative mass spectrometry-based proteomic experiments.

    Science.gov (United States)

    Oberg, Ann L; Vitek, Olga

    2009-05-01

    We review the fundamental principles of statistical experimental design, and their application to quantitative mass spectrometry-based proteomics. We focus on class comparison using Analysis of Variance (ANOVA), and discuss how randomization, replication and blocking help avoid systematic biases due to the experimental procedure, and help optimize our ability to detect true quantitative changes between groups. We also discuss the issues of pooling multiple biological specimens for a single mass analysis, and calculation of the number of replicates in a future study. When applicable, we emphasize the parallels between designing quantitative proteomic experiments and experiments with gene expression microarrays, and give examples from that area of research. We illustrate the discussion using theoretical considerations, and using real-data examples of profiling of disease.

  14. QUALITY IMPROVEMENT IN MULTIRESPONSE EXPERIMENTS THROUGH ROBUST DESIGN METHODOLOGY

    Directory of Open Access Journals (Sweden)

    M. Shilpa

    2012-06-01

    Full Text Available Robust design methodology aims at reducing the variability in the product performance in the presence of noise factors. Experiments involving simultaneous optimization of more than one quality characteristic are known as multiresponse experiments which are used in the development and improvement of industrial processes and products. In this paper, robust design methodology is applied to optimize the process parameters during a particular operation of rotary driving shaft manufacturing process. The three important quality characteristics of the shaft considered here are of type Nominal-the-best, Smaller-the-better and Fraction defective. Simultaneous optimization of these responses is carried out by identifying the control parameters and conducting the experimentation using L9 orthogonal array.

  15. Design and experiment performances of an inchworm type rotary actuator.

    Science.gov (United States)

    Li, Jianping; Zhao, Hongwei; Shao, Mingkun; Zhou, Xiaoqin; Huang, Hu; Fan, Zunqiang

    2014-08-01

    A piezo-driven rotary actuator by means of inchworm principle is proposed in this paper. Six piezo-stacks and flexure hinges are used to realize large rotation ranges with high accuracy both in the forward and backward motions. Four right-angle flexure hinges and two right-circular flexure hinges are applied in the stator. The motion principle and theoretical analysis of the designed actuator are discussed. In order to investigate the working characteristics, a prototype actuator was manufactured and a series of experiment tests were carried out. The test results indicate that the maximum rotation velocity is 71,300 μrad/s; the maximum output torque is 19.6 N mm. The experiment results confirm that the designed actuator can obtain large rotation motion ranges with relatively high output torques and different rotation speeds on the condition of different driving voltages and frequencies.

  16. Analytical models for the design of the LAPLAS experiment

    Energy Technology Data Exchange (ETDEWEB)

    Piriz, A.R.; Lopez Cela, J.J.; Cortazar, O.D.; Serna Moreno, M.C.; Temporal, M. [ETSI Industriales and Instituto de Investigaciones Energeticas, Universidad de Castilla-La Mancha, 13071 Ciudad Real (Spain); Tahir, N.A. [Gesellschaft fuer Schwerionenforschung Darmstadt, Planckstrasse 1, 64291 Darmstadt (Germany); Hoffmann, D.H.H. [Gesellschaft fuer Schwerionenforschung Darmstadt, Planckstrasse 1, 64291 Darmstadt (Germany); Institut fuer Kernphysik, Technische Universitaet Darmstadt, 64289 Darmstadt (Germany)

    2007-07-01

    We review the theoretical activity at the University of Castilla-LaMancha directed to the design of the LAPLAS (Laboratory of Planetary Sciences) experiment in the framework of the HEDgeHOB international collaboration. We have developed analytical models for the different phases of LAPLAS, including models for the implosion of the cylindrical shell target, for the generation of an annular focal spot by means of a high-frequency wobbler system and for the hydrodynamic instabilities that could affect the performance of the target implosion. These models have been complemented with one and two-dimensional numerical simulations and such a combination have allowed us to have a powerful tool available for the design of the experiments as well as for the interpretation of their results. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  17. Paradigms for adaptive statistical information designs: practical experiences and strategies.

    Science.gov (United States)

    Wang, Sue-Jane; Hung, H M James; O'Neill, Robert

    2012-11-10

    design. We highlight the substantial risk of planning the sample size for confirmatory trials when information is very uninformative and stipulate the advantages of adaptive statistical information designs for planning exploratory trials. Practical experiences and strategies as lessons learned from more recent adaptive design proposals will be discussed to pinpoint the improved utilities of adaptive design clinical trials and their potential to increase the chance of a successful drug development.

  18. Optimal color design of psychological counseling room by design of experiments and response surface methodology.

    Science.gov (United States)

    Liu, Wenjuan; Ji, Jianlin; Chen, Hua; Ye, Chenyu

    2014-01-01

    Color is one of the most powerful aspects of a psychological counseling environment. Little scientific research has been conducted on color design and much of the existing literature is based on observational studies. Using design of experiments and response surface methodology, this paper proposes an optimal color design approach for transforming patients' perception into color elements. Six indices, pleasant-unpleasant, interesting-uninteresting, exciting-boring, relaxing-distressing, safe-fearful, and active-inactive, were used to assess patients' impression. A total of 75 patients participated, including 42 for Experiment 1 and 33 for Experiment 2. 27 representative color samples were designed in Experiment 1, and the color sample (L = 75, a = 0, b = -60) was the most preferred one. In Experiment 2, this color sample was set as the 'central point', and three color attributes were optimized to maximize the patients' satisfaction. The experimental results show that the proposed method can get the optimal solution for color design of a counseling room.

  19. Experimental design and model choice the planning and analysis of experiments with continuous or categorical response

    CERN Document Server

    Toutenburg, Helge

    1995-01-01

    This textbook gives a representation of the design and analysis of experiments, that comprises the aspects of classical theory for continuous response and of modern procedures for categorical response, and especially for correlated categorical response. Complex designs, as for example, cross-over and repeated measures, are included. Thus, it is an important book for statisticians in the pharmaceutical industry as well as for clinical research in medicine and dentistry.

  20. Experiment Design and First Season Observations with the Degree Angular Scale Interferometer

    OpenAIRE

    Leitch, E.M.; Pryke, C; Halverson, N. W.; Kovac, J.; Davidson, G.; LaRoque, S.; Schartman, E.; Yamasaki, J; Carlstrom, J. E.; Holzapfel, W. L.; Dragovan, M.; Cartwright, J. K.; Mason, B S; Padin, S.; Pearson, T. J.

    2001-01-01

    We describe the instrumentation, experiment design and data reduction for the first season of observations with the Degree Angular Scale Interferometer (DASI), a compact microwave interferometer designed to measure anisotropy in the Cosmic Microwave Background (CMB) on degree and sub-degree scales (l=100--900). The telescope was deployed at the Amundsen-Scott South Pole research station during the 1999--2000 austral summer and conducted observations of the CMB throughout the following austral...

  1. Analysis of Variance in the Modern Design of Experiments

    Science.gov (United States)

    Deloach, Richard

    2010-01-01

    This paper is a tutorial introduction to the analysis of variance (ANOVA), intended as a reference for aerospace researchers who are being introduced to the analytical methods of the Modern Design of Experiments (MDOE), or who may have other opportunities to apply this method. One-way and two-way fixed-effects ANOVA, as well as random effects ANOVA, are illustrated in practical terms that will be familiar to most practicing aerospace researchers.

  2. DIME Students Discuss Final Drop Tower Experiment Design

    Science.gov (United States)

    2002-01-01

    Students discuss fine points of their final design for the Drop Tower experiment during the second Dropping in a Microgravity Environment (DIME) competition held April 23-25, 2002, at NASA's Glenn Research Center. Competitors included two teams from Sycamore High School, Cincinnati, OH, and one each from Bay High School, Bay Village, OH, and COSI Academy, Columbus, OH. DIME is part of NASA's education and outreach activities. Details are on line at http://microgravity.grc.nasa.gov/DIME_2002.html.

  3. Applying design of experiments to a compression refrigeration cycle

    OpenAIRE

    Nuno Ricardo Costa; João Garcia

    2015-01-01

    Refrigeration cycles are used in a large diversity of industrial and domestic (residential and non-residential) equipment and their efficiency depend on several variables. To better understanding of how controllable variables impact on a compression refrigeration cycle efficiency, statistically designed experiments were conducted and data were analyzed. A quadratic polynomial model was fitted to Coefficient of Performance and variable settings to maximize cycle efficiency identified. Results ...

  4. Design and Experiments of Low Cost Teleoperation System

    Directory of Open Access Journals (Sweden)

    Adha Imam Cahyadi

    2012-03-01

    Full Text Available In this work, a teleoperation system consists of two planar SCARA manipulators is developed. The manipulators are constructed using basic low cost aluminum bars as well as cheap electronic circuitry and software. Modeling, system identification, individual control and teleoperation control are proposed. Finally, experiments are also performed to verify the effectiveness of the design.Index Terms—Teleoperation systems, PID control, System identification, position control.

  5. Suggesting a very simple experiment designed to detect tachyons

    OpenAIRE

    Kowalczynski, J. K.

    2009-01-01

    Production of tachyons in, among other things, air showers would be in accordance with predictions of general relativity. Some such tachyons would travel with a precisely determined speed, almost equal to 5c/3 relative to the earth, and would be registered high above the region of creation of air showers, e.g. on board of a satellite. A very simple experiment designed to detect these tachyons is outlined here. Brief justification to search for tachyons is also given.

  6. Using statistical design experiment methodologies to identify customers' needs

    OpenAIRE

    Huertas Garcia, Rubén; Consolación Segura, Carolina María

    2009-01-01

    Customer satisfaction has become one of the main objectives in all areas of business, especially the tourist trade. One of the most difficult problems is to know how to obtain this satisfaction, which involves identifying customers' needs and desires, and transferring them to our product or service specifications. In order to ascertain the consumer voice, we can ask consumers directly, or thy to deduce their requirements by indirect methods. Statistical design of experiments (SDE) is consider...

  7. Weighing Evidence: The Design and Comparison of Probability Thought Experiments.

    Science.gov (United States)

    1983-06-01

    this design is attractive, but a number of experiments, beginning with Alpert and Raiffa in 1969, have reported that the Weighing Evidence 38 initial...Grant N00014-79-C-0077 to the second author. Ia Weighing Evidence 67 References Alpert , M., and Raiffa, H.: 1982, ’A progress report on the training of...C. 20360 Dr. L. Chmura Naval Research Laboratory Larry Olmstead Code 7592 Naval Surface Weapons Center Computer Sciences & Systems NSWC/DL

  8. The Modern Design of Experiments: A Technical and Marketing Framework

    Science.gov (United States)

    DeLoach, R.

    2000-01-01

    A new wind tunnel testing process under development at NASA Langley Research Center, called Modern Design of Experiments (MDOE), differs from conventional wind tunnel testing techniques on a number of levels. Chief among these is that MDOE focuses on the generation of adequate prediction models rather than high-volume data collection. Some cultural issues attached to this and other distinctions between MDOE and conventional wind tunnel testing are addressed in this paper.

  9. Reliability-Based Optimal Design of Experiment Plans for Offshore Structures

    DEFF Research Database (Denmark)

    Sørensen, John Dalsgaard; Faber, M. H.; Kroon, I. B.

    1993-01-01

    Design of cost optimal experiment plans on the basis of a preposterior analysis is discussed. In particular the planning of on-site response measurements on offshore structures in order to update probabilistic models for fatigue life estimation is addressed. Special emphasis is given to modelling...

  10. Adaptive Lighting Design – Staged Experiences of Light

    DEFF Research Database (Denmark)

    Søndergaard, Karin; Petersen, Kjell Yngve

    2015-01-01

    lighting is based on a partial automation of the possibilities to adjust the colour tone and brightness levels of light in order to adapt to people’s needs and desires. Software can be seen to bear a communicative aesthetic, where the relation of user situations and the design intentions are controlled...... in ways that meaningfully adapt. In the two installations, two different aspects are at play. In White Cube, the light colours are balanced. In White Box, the light follows the movements of the people in the space. In situations with several people occupying the same space, social relations become...... compositions influence their ability to orient themselves within the geography of the space and how the balances in light colours and luminous intensities affect their experience of directionality, distances, and scales. In short, the experience of being present in the space as well as one’s experience...

  11. Adaptive Lighting Design – Staged Experiences of Light

    DEFF Research Database (Denmark)

    Petersen, Kjell Yngve; Søndergaard, Karin

    lighting is based on a partial automation of the possibilities to adjust the colour tone and brightness levels of light in order to adapt to people’s needs and desires. Software can be seen to bear a communicative aesthetic, where the relation of user situations and the design intentions are controlled...... in ways that meaningfully adapt. In the two installations, two different aspects are at play. In White Cube, the light colours are balanced. In White Box, the light follows the movements of the people in the space. In situations with several people occupying the same space, social relations become...... compositions influence their ability to orient themselves within the geography of the space and how the balances in light colours and luminous intensities affect their experience of directionality, distances, and scales. In short, the experience of being present in the space as well as one’s experience...

  12. Gamma Astrometric Measurement Experiment (GAME) - Implementation and performance

    Science.gov (United States)

    Gai, Mario; Gai, Mario; Vecchiato, Alberto; Lattanzi, Mario G.; Ligori, Sebastiano; Loreggia, Davide

    The GAME mission concept is aimed at test of the General Relativity, through very precise measurement of the gravitational deflection of light by the Sun, by means of an optimised telescope operating in the visible and launched in orbit on a small class satellite. We recall the science motivations, discussed in detail in a separate contribution by Vecchiato et al., and describe the mission requirements derivation, the proposed mission profile, the preliminary payload design and the expected performance. The targeted precision on the "γ" parameter of the Parametrised Post-Newtonian formulation of General Relativity is in the range 10-6 to 10-7 or better, with an improvement of one or two orders of magnitude with respect to the best currently available experimental results. Such precision is suitable to detect possible deviations of γ from the unity value, associated to generalised Einstein models for gravitation, with potentially huge impacts on the cosmological distribution of dark matter and dark energy. The measurement principle is based on the differential astrometric signature on the stellar positions, i.e. on the spatial component of the gravitational effect, rather than the temporal component as in the most recent experiments based on radio link delay timing. Calibration is based on frequent measurement of angular separation of bright sources in stellar fields affected by negligible deflection. The instrument concept is based on a dual field, multiple aperture Fizeau interferometer, observing simultaneously two sky regions close to the Solar limb. A split flat mirror is used to fold the telescope line of sight on two different directions on the sky, separated by a base angle of about 4 degrees, which represents the gauge applied on the sky to measure the desired angular value of deflection. Stability or calibration of the base angle is the key to fulfilling the GAME science goals. An internal laser metrology option is considered for both on ground

  13. An industrial approach to design compelling VR and AR experience

    Science.gov (United States)

    Richir, Simon; Fuchs, Philippe; Lourdeaux, Domitile; Buche, Cédric; Querrec, Ronan

    2013-03-01

    The convergence of technologies currently observed in the field of VR, AR, robotics and consumer electronic reinforces the trend of new applications appearing every day. But when transferring knowledge acquired from research to businesses, research laboratories are often at a loss because of a lack of knowledge of the design and integration processes in creating an industrial scale product. In fact, the innovation approaches that take a good idea from the laboratory to a successful industrial product are often little known to researchers. The objective of this paper is to present the results of the work of several research teams that have finalized a working method for researchers and manufacturers that allow them to design virtual or augmented reality systems and enable their users to enjoy "a compelling VR experience". That approach, called "the I2I method", present 11 phases from "Establishing technological and competitive intelligence and industrial property" to "Improvements" through the "Definition of the Behavioral Interface, Virtual Environment and Behavioral Software Assistance". As a result of the experience gained by various research teams, this design approach benefits from contributions from current VR and AR research. Our objective is to validate and continuously move such multidisciplinary design team methods forward.

  14. Researching Design, Experience and Practice of Networked Learning

    DEFF Research Database (Denmark)

    Hodgson, Vivien; de Laat, Maarten; McConnell, David;

    2014-01-01

    In the introductory chapter, we explore how networked learning has developed in recent years by summarising and discussing the research presented in the chapters of the book. The chapters are structured in three sections, each highlighting a particular aspect of practice. The first section focuse...... and spaces); the agency and active role of technology within networked learning; and the messy, often chaotic and always political nature of the design, experience and practice of networked learning....... on the relationship between design and its influence on how networked learning practices are implemented. The second section extends this discussion by raising the notion of experiencing networked learning practices. Here the expected and unexpected effects of design and its implementation are scrutinised. The third...

  15. Novel Hyper-Redundant Manipulator: Design, Study and Experiment

    Institute of Scientific and Technical Information of China (English)

    李彦明; 马培荪; 秦昌俊; 曹志奎; 王建滨; 朱海鸿

    2003-01-01

    A novel hyper-redundant manipulator named RT1 is designed and studied.The unique feature of RT1 is all degrees of freedom (DOF) are actuated with only one motor via special designed hinge bar universal joints.The mechanisms of RT1 are introduced in detail.Some experiments are carried out in order to test the movability and adaptability of the manipulator.RT1 is actuated by pulse string and acts discretely.The discrete working space of RT1 is described and the parameter optimization for kinematical redundancy resolution is studied also.The optimization criterion is altering the design parameter as little as possible during manipulator's motion from the initial position to the expected position.An[1] optimization example is given that is realized with Matlab optimize tool-box.

  16. HTGR nuclear heat source component design and experience

    Energy Technology Data Exchange (ETDEWEB)

    Peinado, C.O.; Wunderlich, R.G.; Simon, W.A.

    1982-05-01

    The high-temperature gas-cooled reactor (HTGR) nuclear heat source components have been under design and development since the mid-1950's. Two power plants have been designed, constructed, and operated: the Peach Bottom Atomic Power Station and the Fort St. Vrain Nuclear Generating Station. Recently, development has focused on the primary system components for a 2240-MW(t) steam cycle HTGR capable of generating about 900 MW(e) electric power or alternately producing high-grade steam and cogenerating electric power. These components include the steam generators, core auxiliary heat exchangers, primary and auxiliary circulators, reactor internals, and thermal barrier system. A discussion of the design and operating experience of these components is included.

  17. Influence analysis on crossover design experiment in bioequivalence studies.

    Science.gov (United States)

    Huang, Yufen; Ke, Bo-Shiang

    2014-01-01

    Crossover designs are commonly used in bioequivalence studies. However, the results can be affected by some outlying observations, which may lead to the wrong decision on bioequivalence. Therefore, it is essential to investigate the influence of aberrant observations. Chow and Tse in 1990 discussed this issue by considering the methods based on the likelihood distance and estimates distance. Perturbation theory provides a useful tool for the sensitivity analysis on statistical models. Hence, in this paper, we develop the influence functions via the perturbation scheme proposed by Hampel as an alternative approach on the influence analysis for a crossover design experiment. Moreover, the comparisons between the proposed approach and the method proposed by Chow and Tse are investigated. Two real data examples are provided to illustrate the results of these approaches. Our proposed influence functions show excellent performance on the identification of outlier/influential observations and are suitable for use with small sample size crossover designs commonly used in bioequivalence studies.

  18. Report on the first VLHC photon stop cryogenic design experiment

    CERN Document Server

    Geynisman, M; Bossert, R; Darve, C; Ewald, K D; Klebaner, A; Limon, P; Martínez, A

    2004-01-01

    As part of Fermilab's study of a Very Large Hadron Collider (VLHC), a water-cooled photon stop was proposed as a device to intercept the synchrotron radiation emitted by the high-energy proton beams in the high-field superconducting magnets with minimal plug-cooling power. Photon stops are radiation absorbers operating at room temperature that protrude into the beam tube at the end of each bending magnet to scrape the synchrotron light emitted by the beam one magnet up- stream. Among the technological challenges regarding photon stops is their cryo-design. The photon stop is water-cooled and operates in a cryogenic environment. A careful cryo-design is therefore essential to enable operation at minimum heat transfer between the room temperature sections and the cryogenic parts. A photon stop cryo- design was developed and a prototype was built. This paper presents the results of the cryogenic experiments conducted on the first VLHC photon-stop prototype.

  19. Population Fisher information matrix and optimal design of discrete data responses in population pharmacodynamic experiments.

    Science.gov (United States)

    Ogungbenro, Kayode; Aarons, Leon

    2011-08-01

    In the recent years, interest in the application of experimental design theory to population pharmacokinetic (PK) and pharmacodynamic (PD) experiments has increased. The aim is to improve the efficiency and the precision with which parameters are estimated during data analysis and sometimes to increase the power and reduce the sample size required for hypothesis testing. The population Fisher information matrix (PFIM) has been described for uniresponse and multiresponse population PK experiments for design evaluation and optimisation. Despite these developments and availability of tools for optimal design of population PK and PD experiments much of the effort has been focused on repeated continuous variable measurements with less work being done on repeated discrete type measurements. Discrete data arise mainly in PDs e.g. ordinal, nominal, dichotomous or count measurements. This paper implements expressions for the PFIM for repeated ordinal, dichotomous and count measurements based on analysis by a mixed-effects modelling technique. Three simulation studies were used to investigate the performance of the expressions. Example 1 is based on repeated dichotomous measurements, Example 2 is based on repeated count measurements and Example 3 is based on repeated ordinal measurements. Data simulated in MATLAB were analysed using NONMEM (Laplace method) and the glmmML package in R (Laplace and adaptive Gauss-Hermite quadrature methods). The results obtained for Examples 1 and 2 showed good agreement between the relative standard errors obtained using the PFIM and simulations. The results obtained for Example 3 showed the importance of sampling at the most informative time points. Implementation of these expressions will provide the opportunity for efficient design of population PD experiments that involve discrete type data through design evaluation and optimisation.

  20. Flow Experience as a Quality Measure in Evaluating Physically Activating Collaborative Serious Games

    Directory of Open Access Journals (Sweden)

    Kristian J. M. Kiili

    2014-09-01

    Full Text Available The measurement of the subjective playing experience is important part of the game development process. The enjoyment level that a serious game offers is a key factor in determining whether a player will be engaged in the gameplay and achieve the objectives of the game. In this paper we report the results of a game design process in which two prototypes of a collaborative exergame were studied. The main aim of the paper is to explore to what extend the measurement of flow experience can facilitate the game evaluation and design process. Alltogether 102 junior high school students participated in two user experience studies and played collaborative exergames designed to teach soft skills. Playing experience was measured with a flow questionnaire, playing behavior was observed and some of the players were interviewed. The results showed that flow experience can be used to evaluate the overall quality of the gameplay and it provides a structured approach to consider the quality of the game. However, flow does not provide detailed information about the shortages of the game and thus complementary methods is needed to identify the causes. The results also indicated that flow experience was independent of gender that supports its use in quality measurement.

  1. The Functional Measurement Experiment Builder suite: two Java-based programs to generate and run functional measurement experiments.

    Science.gov (United States)

    Mairesse, Olivier; Hofmans, Joeri; Theuns, Peter

    2008-05-01

    We propose a free, easy-to-use computer program that does not requires prior knowledge of computer programming to generate and run experiments using textual or pictorial stimuli. Although the FM Experiment Builder suite was initially programmed for building and conducting FM experiments, it can also be applied for non-FM experiments that necessitate randomized, single, or multifactorial designs. The program is highly configurable, allowing multilingual use and a wide range of different response formats. The outputs of the experiments are Microsoft Excel compatible .xls files that allow easy copy-paste of the results into Weiss's FM CalSTAT program (2006) or any other statistical package. Its Java-based structure is compatible with both Windows and Macintosh operating systems, and its compactness (< 1 MB) makes it easily distributable over the Internet.

  2. Creating meaningful learning experiences: Understanding students' perspectives of engineering design

    Science.gov (United States)

    Aleong, Richard James Chung Mun

    , relevance, and transfer. With this framework of student learning, engineering educators can enhance learning experiences by engaging all three levels of students' understanding. The curriculum studies orientation applied the three holistic elements of curriculum---subject matter, society, and the individual---to conceptualize design considerations for engineering curriculum and teaching practice. This research supports the characterization of students' learning experiences to help educators and students optimize their teaching and learning of design education.

  3. Laser application to measure vertical sea temperature and turbidity, design phase

    Science.gov (United States)

    Hirschberg, J. G.; Wouters, A. W.; Simon, K. M.; Byrne, J. D.; Deverdun, C. E.

    1976-01-01

    An experiment to test a new method was designed, using backscattered radiation from a laser beam to measure oceanographic parameters in a fraction of a second. Tyndall, Rayleigh, Brillouin, and Raman scattering all are utilized to evaluate the parameters. A beam from a continuous argon ion laser is used together with an interferometer and interference filters to gather the information. The results are checked by direct measurements. Future shipboard and airborne experiments are described.

  4. Neutron storage time measurement for the neutron EDM experiment

    Science.gov (United States)

    Griffith, W. Clark; Ito, Takeyasu; Ramsey, John; Makela, Mark; Clayton, Steven; Hennings-Yeomans, Raul; Saidur Rahaman, M.; Currie, Scott; Womack, Todd; Sondheim, Walter; Cooper, Martin

    2010-11-01

    A new experiment to search for the neutron electric dipole moment (nEDM) is under development for installation at the Spallation Neutron Source (SNS) at Oakridge National Laboratory. The experiment will use ultra-cold neutrons (UCN) stored in superfluid helium, along with ^3He atoms acting as a neutron spin analyzer and comagnetometer. One crucial factor affecting the ultimate sensitivity of the experiment is the neutron storage time that can be obtained in the acrylic measurement cell. The acrylic cell walls will be coated with deuterated polystyrene (dPS), which is expected to give a wall loss factor of ˜room temperature and below 20 K.

  5. Aespoe Pillar Stability Experiment. Final experiment design, monitoring results and observations

    Energy Technology Data Exchange (ETDEWEB)

    Andersson, Christer [Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden); Eng, Anders [Acuo Engineering AB, Linkoeping (Sweden)

    2005-12-15

    The field part of the Aespoe Pillar Stability Experiment at the Aespoe Hard Rock Laboratory (HRL) was finished in 2004. The experiment was designed to induce and monitor the process of brittle failure, spalling, in a fractured rock mass under controlled conditions. The field part was successfully conducted and a large data set was obtained. This report presents the final design of the experiment, the results of the monitoring, and the observations made during the spalling process and when the spalled rock was removed. When heating of the rock was initiated the rock responded quickly. After only a few days the spalling process was activated in the notch, as indicated by the acoustic emission system, and shortly thereafter displacement readings were recorded. Contraction (radial expansion) of the rock was recorded by several instruments before the notch reached the instrument levels. This contraction is probably the result of a 3D re-distribution of the stresses. The temperature increase in the system was both slower and reached a steady state much earlier than predicted by the numerical models. The propagation of the notch was therefore halted after approximately one month of heating. The power to the electrical heaters was therefore doubled. Spalling then started up again, and in one month's time it had propagated to a depth of approximately five metres in the hole. A second steady state was now reached, but this time the heater power was kept constant for a while to let the rock settle before the confinement pressure was reduced from 700 kPa to 0 in decrements of 50 kPa. The rock mass response to the pressure drop was very limited until the pressure was lowered to approximately 200 kPa (the atmospheric pressure is not included in the given pressure values). Large displacements and a high acoustic emission hit frequency were then measured in the open hole. After the de-pressurization of the confined hole, the heaters were left on for approximately one week

  6. Measurement of Poloidal Velocity on the National Spherical Torus Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Ronald E. Bell and Russell Feder

    2010-06-04

    A diagnostic suite has been developed to measure impurity poloidal flow using charge exchange recombination spectroscopy on the National Spherical Torus Experiment. Toroidal and poloidal viewing systems measure all quantities required to determine the radial electric field. Two sets of up/down symmetric poloidal views are used to measure both active emission in the plane of the neutral heating beams and background emission in a radial plane away from the neutral beams. Differential velocity measurements isolate the line-integrated poloidal velocity from apparent flows due to the energy-dependent chargeexchange cross section. Six f/1.8 spectrometers measure 276 spectra to obtain 75 active and 63 background channels every 10 ms. Local measurements from a similar midplane toroidal viewing system are mapped into two dimensions to allow the inversion of poloidal line-integrated measurements to obtain local poloidal velocity profiles. Radial resolution after inversion is 0.6-1.8 cm from the plasma edge to the center.

  7. Design and modeling of small scale multiple fracturing experiments

    Energy Technology Data Exchange (ETDEWEB)

    Cuderman, J F

    1981-12-01

    Recent experiments at the Nevada Test Site (NTS) have demonstrated the existence of three distinct fracture regimes. Depending on the pressure rise time in a borehole, one can obtain hydraulic, multiple, or explosive fracturing behavior. The use of propellants rather than explosives in tamped boreholes permits tailoring of the pressure risetime over a wide range since propellants having a wide range of burn rates are available. This technique of using the combustion gases from a full bore propellant charge to produce controlled borehole pressurization is termed High Energy Gas Fracturing (HEGF). Several series of HEGF, in 0.15 m and 0.2 m diameter boreholes at 12 m depths, have been completed in a tunnel complex at NTS where mineback permitted direct observation of fracturing obtained. Because such large experiments are costly and time consuming, smaller scale experiments are desirable, provided results from small experiments can be used to predict fracture behavior in larger boreholes. In order to design small scale gas fracture experiments, the available data from previous HEGF experiments were carefully reviewed, analytical elastic wave modeling was initiated, and semi-empirical modeling was conducted which combined predictions for statically pressurized boreholes with experimental data. The results of these efforts include (1) the definition of what constitutes small scale experiments for emplacement in a tunnel complex at the Nevada Test Site, (2) prediction of average crack radius, in ash fall tuff, as a function of borehole size and energy input per unit length, (3) definition of multiple-hydraulic and multiple-explosive fracture boundaries as a function of boreholes size and surface wave velocity, (4) semi-empirical criteria for estimating stress and acceleration, and (5) a proposal that multiple fracture orientations may be governed by in situ stresses.

  8. Experience-based design, co-design and experience-based co-design in palliative and end-of-life care.

    Science.gov (United States)

    Borgstrom, Erica; Barclay, Stephen

    2017-02-16

    Experience-based design, co-design, and experience-based co-design can be used within healthcare to design services that improve the patient, carer and staff experience of the services. As palliative and end-of-life care centrally value person-centred care, we believe that service designers, commissioners and those tasked with making quality improvements will be interested in this growing field. This paper outlines these approaches-with a particular emphasis on experience-based co-design-and describes how they are and can be used within palliative and end-of-life care. Based on a rapid review and several case studies, this article highlights the key lessons learnt from previous projects using these approaches and discusses areas for improvement in current reporting of service design projects. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  9. Tuning Parameters in Heuristics by Using Design of Experiments Methods

    Science.gov (United States)

    Arin, Arif; Rabadi, Ghaith; Unal, Resit

    2010-01-01

    With the growing complexity of today's large scale problems, it has become more difficult to find optimal solutions by using exact mathematical methods. The need to find near-optimal solutions in an acceptable time frame requires heuristic approaches. In many cases, however, most heuristics have several parameters that need to be "tuned" before they can reach good results. The problem then turns into "finding best parameter setting" for the heuristics to solve the problems efficiently and timely. One-Factor-At-a-Time (OFAT) approach for parameter tuning neglects the interactions between parameters. Design of Experiments (DOE) tools can be instead employed to tune the parameters more effectively. In this paper, we seek the best parameter setting for a Genetic Algorithm (GA) to solve the single machine total weighted tardiness problem in which n jobs must be scheduled on a single machine without preemption, and the objective is to minimize the total weighted tardiness. Benchmark instances for the problem are available in the literature. To fine tune the GA parameters in the most efficient way, we compare multiple DOE models including 2-level (2k ) full factorial design, orthogonal array design, central composite design, D-optimal design and signal-to-noise (SIN) ratios. In each DOE method, a mathematical model is created using regression analysis, and solved to obtain the best parameter setting. After verification runs using the tuned parameter setting, the preliminary results for optimal solutions of multiple instances were found efficiently.

  10. Multipoint Vernier VISAR Interferometer System for Measuring Mass Velocity in Shock Wave Experiments

    Science.gov (United States)

    Gubskii, K. L.; Koshkin, D. S.; Mikhaylyuk, A. V.; Korolev, A. M.; Pirog, V. A.; Kuznetsov, A. P.

    The results of development of a laser interferometer designed to measure the mass velocity of condensed substances in shock wave experiments in the field of high energy density physics are presented. The developed laser system allows measurements of the velocity of free surfaces of samples in shockwave experiments with accuracy no worse than 10 m/s for the entire range of velocities attained experimentally. The time resolution of measurements is limited by the response speed of the used PMTs and amounts to 2.5 ns.

  11. Discriminating between rival biochemical network models: three approaches to optimal experiment design

    Directory of Open Access Journals (Sweden)

    August Elias

    2010-04-01

    Full Text Available Abstract Background The success of molecular systems biology hinges on the ability to use computational models to design predictive experiments, and ultimately unravel underlying biological mechanisms. A problem commonly encountered in the computational modelling of biological networks is that alternative, structurally different models of similar complexity fit a set of experimental data equally well. In this case, more than one molecular mechanism can explain available data. In order to rule out the incorrect mechanisms, one needs to invalidate incorrect models. At this point, new experiments maximizing the difference between the measured values of alternative models should be proposed and conducted. Such experiments should be optimally designed to produce data that are most likely to invalidate incorrect model structures. Results In this paper we develop methodologies for the optimal design of experiments with the aim of discriminating between different mathematical models of the same biological system. The first approach determines the 'best' initial condition that maximizes the L2 (energy distance between the outputs of the rival models. In the second approach, we maximize the L2-distance of the outputs by designing the optimal external stimulus (input profile of unit L2-norm. Our third method uses optimized structural changes (corresponding, for example, to parameter value changes reflecting gene knock-outs to achieve the same goal. The numerical implementation of each method is considered in an example, signal processing in starving Dictyostelium amœbæ. Conclusions Model-based design of experiments improves both the reliability and the efficiency of biochemical network model discrimination. This opens the way to model invalidation, which can be used to perfect our understanding of biochemical networks. Our general problem formulation together with the three proposed experiment design methods give the practitioner new tools for a systems

  12. Precision of future experiments measuring primordial tensor fluctuation

    CERN Document Server

    Wang, Yi

    2014-01-01

    Recently the second phase of Background Imaging of Cosmic Extragalactic Polarization (BICEP2) claimed a detection of the tensor-to-scalar ratio ($r$) of primordial fluctuation at $5\\sigma$ confidence level. If it is true, this large and measurable amplitude ($r \\simeq 0.2$) of B-mode polarization indicates that it is possible to measure the shape of CMB B-mode polarization with future experiments. Given the current understanding of the experimental noise and foreground contamination, we forecast the precision of $r$ and the tensor spectral index $n_{\\rm t}$ measurements from Planck, Spider and POLARBEAR with $n_{\\rm t}$ as a free parameter. We quantitatively determine the signal-to-noise of the measurement in $r$-$n_{\\rm t}$ parameter space for the three experiments. The forecasted signal-to-noise ratio of the B-mode polarization somewhat depends on $n_{\\rm t}$, but strongly depends on the true value of $r$.

  13. PARAMETRIC MODELING, CREATIVITY, AND DESIGN: TWO EXPERIENCES WITH ARCHITECTURE’ STUDENTS

    Directory of Open Access Journals (Sweden)

    Wilson Florio

    2012-02-01

    Full Text Available The aim of this article is to reflect on the use of the parametric modeling in two didactic experiences. The first experiment involved resources of the Paracloud program and its relation with the Rhinoceros program, that resulted in the production of physical models produced with the aid of the laser cutting. In the second experiment, the students had produced algorithms in the Grasshopper, resulting in families of structures and coverings. The study objects are both the physical models and digital algorithms resultants from this experimentation. For the analysis and synthesis of the results, we adopted four important assumptions: 1. the value of attitudes and environment of work; 2. the importance of experimentation and improvisation; 3. understanding of the design process as a situated act and as a ill-defined problem; 4. the inclusion of creative and critical thought in the disciplines. The results allow us to affirm that the parametric modeling stimulates creativity, therefore allowing combination of different parameters, that result in unexpected discoveries. Keywords: Teach-Learning, Parametric Modeling, Laser Cutter, Grasshopper, Design Process, Creativity.

  14. Improving Student Commitment to Healthcare-Related Design Practice by Improving the Studio Learning Experience.

    Science.gov (United States)

    Tan, Lindsay; Hong, Miyoung; Albert, Taneshia West

    2017-01-01

    This case study explores the influence of the healthcare design studio experience on students' short-term professional goals as measured through rates of healthcare-related certification and internship/employment. The value and relevance of interior design is evident in the healthcare design sector. However, interior design students may not perceive this value if it is not communicated through their design education. Students' experience in the design studio plays a crucial role in determining career choices, and students may be more committed to career goals when there is clear connection between major coursework and professional practice. The authors compared healthcare-related certification and internship/employment levels between two student cohorts in a capstone undergraduate interior design healthcare design studio course. The first cohort was led by the existing curriculum. The second cohort was led by the revised curriculum that specifically aimed at encouraging students to commit to healthcare-related design practice. When measured at 3 months from graduation, the second cohort, led by the revised curriculum, saw a 30% increase in Evidence-based Design Accreditation and Certification exam pass rates and a 40% increase in healthcare-related internship/employment. The challenge of interior design education is to instill in emerging professionals not only professional competence but also those professional attitudes that will make them better prepared to design spaces that improve quality of life, particularly in healthcare environments. The results exceeded the project goals, and so this could be considered a promising practice for courses focused on healthcare design education.

  15. Engineering design of the National Spherical Torus Experiment

    Energy Technology Data Exchange (ETDEWEB)

    C. Neumeyer; P. Heitzenroeder; J. Spitzer, J. Chrzanowski; et al

    2000-05-11

    NSTX is a proof-of-principle experiment aimed at exploring the physics of the ``spherical torus'' (ST) configuration, which is predicted to exhibit more efficient magnetic confinement than conventional large aspect ratio tokamaks, amongst other advantages. The low aspect ratio (R/a, typically 1.2--2 in ST designs compared to 4--5 in conventional tokamaks) decreases the available cross sectional area through the center of the torus for toroidal and poloidal field coil conductors, vacuum vessel wall, plasma facing components, etc., thus increasing the need to deploy all components within the so-called ``center stack'' in the most efficient manner possible. Several unique design features have been developed for the NSTX center stack, and careful engineering of this region of the machine, utilizing materials up to their engineering allowables, has been key to meeting the desired objectives. The design and construction of the machine has been accomplished in a rapid and cost effective manner thanks to the availability of extensive facilities, a strong experience base from the TFTR era, and good cooperation between institutions.

  16. Opto-mechanical design of vacuum laser resonator for the OSQAR experiment

    Science.gov (United States)

    Hošek, Jan; Macúchová, Karolina; Nemcová, Šárka; Kunc, Štěpán.; Šulc, Miroslav

    2015-01-01

    This paper gives short overview of laser-based experiment OSQAR at CERN which is focused on search of axions and axion-like particles. The OSQAR experiment uses two experimental methods for axion search - measurement of the ultra-fine vacuum magnetic birefringence and a method based on the "Light shining through the wall" experiment. Because both experimental methods have reached its attainable limits of sensitivity we have focused on designing a vacuum laser resonator. The resonator will increase the number of convertible photons and their endurance time within the magnetic field. This paper presents an opto-mechanical design of a two component transportable vacuum laser resonator. Developed optical resonator mechanical design allows to be used as a 0.8 meter long prototype laser resonator for laboratory testing and after transportation and replacement of the mirrors it can be mounted on the LHC magnet in CERN to form a 20 meter long vacuum laser resonator.

  17. Measurement of Critical Contact Angle in a Microgravity Space Experiment

    Science.gov (United States)

    Concus, P.; Finn, R.; Weislogel, M.

    1998-01-01

    Mathematical theory predicts that small changes in container shape or in contact angle can give rise to large shifts of liquid in a microgravity environment. This phenomenon was investigated in the Interface Configuration Experiment on board the USMT,2 Space Shuttle flight. The experiment's "double proboscis" containers were designed to strike a balance between conflicting requirements of sizable volume of liquid shift (for ease of observation) and abruptness of the shift (for accurate determination of critical contact angle). The experimental results support the classical concept of macroscopic contact angle and demonstrate the role of hysteresis in impeding orientation toward equilibrium.

  18. Muon reconstruction efficiency measurement in the ATLAS experiment

    Directory of Open Access Journals (Sweden)

    Orlando Nicola

    2012-06-01

    Full Text Available The measurement of the muon reconstruction efficiency in the ATLAS experiment based on the “tag and probe” method using decay muons from J/ψ and Z resonances is presented. The efficiency measurement is compared to its value as estimated from simulations in order to provide scaling factors to correct the residual mis-modeling of the ATLAS muon identification performance.

  19. Laser measurements for experiments on the TROLL accelerator

    Science.gov (United States)

    Hogeland, S.

    1992-06-01

    Propagation of an electron beam over long distances can be accomplished by using a laser produced plasma channel. In experiments at the EPOCH Laboratory, a krypton/fluoride laser, lasing at 248 nm, is used to ionize trimethylamine gas to create a 91 m long channel. The laser radius was measured as 2.4 cm. Laser energy was measured and ranged from 0.5 to 6 J.

  20. The Oxford Conception Study design and recruitment experience.

    Science.gov (United States)

    Pyper, Cecilia; Bromhall, Lise; Dummett, Sarah; Altman, Douglas G; Brownbill, Pat; Murphy, Michael

    2006-11-01

    The Oxford Conception Study is a randomised controlled trial that aims to determine whether or not information about potential fertility from a device that monitors urinary hormones will increase the conception rate in women wishing to conceive. Three modified versions of a fertility monitor have been developed for the study. The monitor measures the levels of urinary oestrone-3-glucuronide (E3G) and luteinising hormone (LH), and the display indicates high or low fertility. The monitor requests all women to test their urine from day 6 to day 25 of the menstrual cycle inclusive. One-third of women are randomised to receive information from the fertility monitor about the early fertile time (from the first rise in E3G until the LH surge is detected), one-third receive information about the late fertile time (the onset of the LH surge and the following 2 days), and a third do not receive any information (control group). All the women are followed up for 6 months or until they are pregnant. A total of 1453 women have been recruited into the study, reaching the study recruitment goal for 80% power to detect a 10% difference in three-cycle pregnancy rate between the Late Fertile Time group (50%) and the Control group (40%), allowing for a 15% non-pregnancy drop-out rate. Follow-up of the women is currently ongoing. The primary analysis will compare the cumulative three-cycle pregnancy rate between each of the study arms. Time-specific conception probabilities will be estimated from coitus information recorded in 12-h intervals. The data from this study will also allow many additional questions to be addressed, including changes in intercourse patterns with feedback about the fertile days and other questions in relation to menstrual cycle function, sexual intercourse, stress, exposures to tobacco products, alcohol, caffeine and medications, fertility and pregnancy outcomes. In addition to presenting the study design, we review the recruitment experience for the Oxford

  1. Measuring Networking as an Outcome Variable in Undergraduate Research Experiences.

    Science.gov (United States)

    Hanauer, David I; Hatfull, Graham

    2015-01-01

    The aim of this paper is to propose, present, and validate a simple survey instrument to measure student conversational networking. The tool consists of five items that cover personal and professional social networks, and its basic principle is the self-reporting of degrees of conversation, with a range of specific discussion partners. The networking instrument was validated in three studies. The basic psychometric characteristics of the scales were established by conducting a factor analysis and evaluating internal consistency using Cronbach's alpha. The second study used a known-groups comparison and involved comparing outcomes for networking scales between two different undergraduate laboratory courses (one involving a specific effort to enhance networking). The final study looked at potential relationships between specific networking items and the established psychosocial variable of project ownership through a series of binary logistic regressions. Overall, the data from the three studies indicate that the networking scales have high internal consistency (α = 0.88), consist of a unitary dimension, can significantly differentiate between research experiences with low and high networking designs, and are related to project ownership scales. The ramifications of the networking instrument for student retention, the enhancement of public scientific literacy, and the differentiation of laboratory courses are discussed. © 2015 D. I. Hanauer and G. Hatfull. CBE—Life Sciences Education © 2015 The American Society for Cell Biology. This article is distributed by The American Society for Cell Biology under license from the author(s). It is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).

  2. Making Sense by Measuring Arcs: A Teaching Experiment in Angle Measure

    Science.gov (United States)

    Moore, Kevin C.

    2013-01-01

    I discuss a teaching experiment that sought to characterize precalculus students' angle measure understandings. The study's findings indicate that the students initially conceived angle measures in terms of geometric objects. As the study progressed, the students formed more robust understandings of degree and radian measures by constructing an…

  3. Making Sense by Measuring Arcs: A Teaching Experiment in Angle Measure

    Science.gov (United States)

    Moore, Kevin C.

    2013-01-01

    I discuss a teaching experiment that sought to characterize precalculus students' angle measure understandings. The study's findings indicate that the students initially conceived angle measures in terms of geometric objects. As the study progressed, the students formed more robust understandings of degree and radian measures by constructing an…

  4. A global parallel model based design of experiments method to minimize model output uncertainty.

    Science.gov (United States)

    Bazil, Jason N; Buzzard, Gregory T; Rundell, Ann E

    2012-03-01

    Model-based experiment design specifies the data to be collected that will most effectively characterize the biological system under study. Existing model-based design of experiment algorithms have primarily relied on Fisher Information Matrix-based methods to choose the best experiment in a sequential manner. However, these are largely local methods that require an initial estimate of the parameter values, which are often highly uncertain, particularly when data is limited. In this paper, we provide an approach to specify an informative sequence of multiple design points (parallel design) that will constrain the dynamical uncertainty of the biological system responses to within experimentally detectable limits as specified by the estimated experimental noise. The method is based upon computationally efficient sparse grids and requires only a bounded uncertain parameter space; it does not rely upon initial parameter estimates. The design sequence emerges through the use of scenario trees with experimental design points chosen to minimize the uncertainty in the predicted dynamics of the measurable responses of the system. The algorithm was illustrated herein using a T cell activation model for three problems that ranged in dimension from 2D to 19D. The results demonstrate that it is possible to extract useful information from a mathematical model where traditional model-based design of experiments approaches most certainly fail. The experiments designed via this method fully constrain the model output dynamics to within experimentally resolvable limits. The method is effective for highly uncertain biological systems characterized by deterministic mathematical models with limited data sets. Also, it is highly modular and can be modified to include a variety of methodologies such as input design and model discrimination.

  5. Using Conductivity Measurements to Determine the Identities and Concentrations of Unknown Acids: An Inquiry Laboratory Experiment

    Science.gov (United States)

    Smith, K. Christopher; Garza, Ariana

    2015-01-01

    This paper describes a student designed experiment using titrations involving conductivity measurements to identify unknown acids as being either HCl or H[subscript 2]SO[subscript 4], and to determine the concentrations of the acids, thereby improving the utility of standard acid-base titrations. Using an inquiry context, students gain experience…

  6. Measuring Migratory Grief and Loss Associated with the Experience of Immigration

    Science.gov (United States)

    Casado, Banghwa Lee; Hong, Michin; Harrington, Donna

    2010-01-01

    Objectives: The Migratory Grief and Loss Questionnaire (MGLQ) was designed to measure the grief experience associated with immigration. This article reports the development and psychometric properties of a Chinese-version of MGLQ. Methods: An exploratory factor analysis (EFA) using maximum likelihood extraction with varimax rotation was conducted…

  7. An Undergraduate Experiment on Nuclear Lifetime Measurement Using the Doppler Effect

    Science.gov (United States)

    Campbell, J. L.; And Others

    1972-01-01

    While designed for a senior undergraduate laboratory, the experiment illustrates the principles involved in the various Doppler techniques currently used in nuclear lifetime studies and demonstrates the versatility of the Ge(Li) detector in applications other than direct energy or intensity measurement. (Author/TS)

  8. Student-Designed Experiments: A Pedagogical Design for Introductory Science Labs

    Science.gov (United States)

    Coker, Jeffrey Scott

    2017-01-01

    Despite numerous calls for science education to be driven by authentic investigation, many laboratory experiences continue to consist of disconnected weekly units during which students carry out instructions that lead to some predetermined finding. This study developed and evaluated a pedagogical design for introductory biology labs where students…

  9. Propagation of Computational Uncertainty Using the Modern Design of Experiments

    Science.gov (United States)

    DeLoach, Richard

    2007-01-01

    This paper describes the use of formally designed experiments to aid in the error analysis of a computational experiment. A method is described by which the underlying code is approximated with relatively low-order polynomial graduating functions represented by truncated Taylor series approximations to the true underlying response function. A resource-minimal approach is outlined by which such graduating functions can be estimated from a minimum number of case runs of the underlying computational code. Certain practical considerations are discussed, including ways and means of coping with high-order response functions. The distributional properties of prediction residuals are presented and discussed. A practical method is presented for quantifying that component of the prediction uncertainty of a computational code that can be attributed to imperfect knowledge of independent variable levels. This method is illustrated with a recent assessment of uncertainty in computational estimates of Space Shuttle thermal and structural reentry loads attributable to ice and foam debris impact on ascent.

  10. The Role of Knowledge and Experience in Engineering Design

    DEFF Research Database (Denmark)

    Ahmed, Saeema; Hacker, Paul; Wallace, Ken M.

    2005-01-01

    This research aims to understand the importance of different types of knowledge to engineering and to understand the number of years of relevant experience required to become an expert in these types of knowledge. The findings of this research contribute to the education and the training of engin......This research aims to understand the importance of different types of knowledge to engineering and to understand the number of years of relevant experience required to become an expert in these types of knowledge. The findings of this research contribute to the education and the training...... of engineering designers, and to validating classifications of knowledge proposed in literature. This paper describes the findings from an empirical study carried out with engineers in managerial roles. Their views have been collected and analysed and are presented in this paper....

  11. Access Control Design and Implementations in the ATLAS Experiment

    CERN Document Server

    Leahu, M C; Avolio, G

    2008-01-01

    The ATLAS experiment operates with a significant number of hardware and software resources. Their protection against misuse is an essential task to ensure a safe and optimal operation. To achieve this goal, the Role Based Access Control (RBAC) model has been chosen for its scalability, flexibility, ease of administration and usability from the lowest operating system level to the highest software application level. This paper presents the overall design of RBAC implementation in the ATLAS experiment and the enforcement solutions in different areas such as the system administration, control room desktops and the data acquisition software. The users and the roles are centrally managed using a directory service based on Lightweight Directory Access Protocol which is kept in synchronization with the human resources and IT datab

  12. Optimal fed batch experiment design for estimation of monod kinetics of Azospirillum brasilense: from theory to practice.

    Science.gov (United States)

    Cappuyns, Astrid M; Bernaerts, Kristel; Smets, Ilse Y; Ona, Ositadinma; Prinsen, Els; Vanderleyden, Jos; Van Impe, Jan F

    2007-01-01

    In this paper the problem of reliable and accurate parameter estimation for unstructured models is considered. It is illustrated how a theoretically optimal design can be successfully translated into a practically feasible, robust, and informative experiment. The well-known parameter estimation problem of Monod kinetic parameters is used as a vehicle to illustrate our approach. As known for a long time, noisy batch measurements do not allow for unique and accurate estimation of the kinetic parameters of the Monod model. Techniques of optimal experiment design are, therefore, exploited to design informative experiments and to improve the parameter estimation accuracy. During the design process, practical feasibility has to be kept in mind. The designed experiments are easy to implement in practice and do not require additional monitoring equipment. Both design and experimental validation of informative fed batch experiments are illustrated with a case study, namely, the growth of the nitrogen-fixing bacteria Azospirillum brasilense.

  13. On A Measurement of Designing And Predicate Logic

    OpenAIRE

    谷口, 興紀; タニグチ, オキノリ; Okinori, TANIGUCHI

    1983-01-01

    The background of the study is that the ratio of the time spent in the verbal device in design process is 40% and it is indispensable to use a verbal device to fix the image of the form which a designer intends to build. I tried to measure design-thinking to do such activities for the science of design. Under the hypothesis that we can trace back design-thinking through the form which satisfies requirements and the analysis of the form can be trace back through the analysis of requirements, w...

  14. The HRMT27 (Rodtarg) Experiment: Design, Operation and First Results

    CERN Document Server

    Torregrosa Martin, Claudio Leopoldo; Calviani, Marco; Butcher, Mark; Horvath, David; Fornasiere, Elvis; Gentini, Luca

    2016-01-01

    The HRMT27-Rodtarg- experiment used the HiRadMat facility at CERN to impact intense 440 GeV proton beams onto thin rods - 8 mm diameter, 140 length - made of high-density materials such as Ir, W, Ta, Mo among others. The purpose of the experiment was to reduce uncertainties on the CERN antiproton target material response and assess the material selection for its future redesign. The experiment was designed to recreate the extreme conditions reached in the target, estimated as an increase of temperature above 2000 ºC in less than 0.5 µs and a subsequent compressive-to-tensile pressure wave of several GPa. This document includes a detailed summary of the experimental setup and online recorded data. Results suggest that all the irradiated materials except tantalum suffered internal damage from conditions 5-7 lower than those reached in the AD-Target, while tantalum targets clearly showed the best dynamic response, remaining un-cracked during the experiment. Foreseen post irradiation examinations will complete ...

  15. Design of laboratory experiments to study radiation-driven implosions

    Science.gov (United States)

    Keiter, P. A.; Trantham, M.; Malamud, G.; Klein, S. R.; Davis, J.; VanDervort, R.; Shvarts, D.; Drake, R. P.; Stone, J. M.; Fraenkel, M.; Frank, Y.; Raicher, E.

    2017-03-01

    The interstellar medium is heterogeneous with dense clouds amid an ambient medium. Radiation from young OB stars asymmetrically irradiate the dense clouds. Bertoldi (1989) developed analytic formulae to describe possible outcomes of these clouds when irradiated by hot, young stars. One of the critical parameters that determines the cloud's fate is the number of photon mean free paths in the cloud. For the extreme cases where the cloud size is either much greater than or much less than one mean free path, the radiation transport should be well understood. However, as one transitions between these limits, the radiation transport is much more complex and is a challenge to solve with many of the current radiation transport models implemented in codes. We present the design of laboratory experiments that use a thermal source of x-rays to asymmetrically irradiate a low-density plastic foam sphere. The experiment will vary the density and hence the number of mean free paths of the sphere to study the radiation transport in different regimes. We have developed dimensionless parameters to relate the laboratory experiment to the astrophysical system and we show that we can perform the experiment in the same transport regime.

  16. Snow isotope diffusion rates measured in a laboratory experiment

    NARCIS (Netherlands)

    Van der Wel, L. G.; Gkinis, V.; Pohjola, V. A.; Meijer, H. A. J.

    2011-01-01

    The diffusion of stable water isotopes in snow was measured in two controlled laboratory experiments. Two batches of snow of different isotopic composition were stacked alternately with varying layer thicknesses. The stack was stored in a freezer room at constant temperature for several months, and

  17. Cross-section measurements in the NOMAD experiment

    CERN Document Server

    Petti, R

    2006-01-01

    The NOMAD experiment collected valuable neutrino data samples, matching both the large statistics of massive calorimeters and the reconstruction quality of bubble chambers. This paper describes the recent measurements of neutrino cross-sections on carbon target. The approach followed for cross-section modeling is also explained.

  18. The Design, Experience and Practice of Networked Learning

    DEFF Research Database (Denmark)

    Gleerup, Janne; Heilesen, Simon; Helms, Niels Henrik

    2014-01-01

    . The Design, Experience and Practice of Networked Learning will prove indispensable reading for researchers, teachers, consultants, and instructional designers in higher and continuing education; for those involved in staff and educational development, and for those studying post graduate qualifications......The chapters in this volume explore new and innovative ways of thinking about the nature of networked learning and its pedagogical values and beliefs. They pose a challenge to us to reflect on what we thought networked learning was 15 year ago, where it is today and where it is likely to be headed...... in learning and teaching. This, the second volume in the Springer Book Series on Researching Networked Learning, is based on a selection of papers presented at the 2012 Networked Learning Conference held in Maastricht, The Netherlands....

  19. Statistical fatigue experiment design in medium density fiberboard

    Directory of Open Access Journals (Sweden)

    Martínez Espinosa Mariano

    2000-01-01

    Full Text Available Medium Density Fiberboard (MDF is a wood-based composite widely employed in several industrial applications, in addition to its use in structures subjected to dynamic loads. Its fatigue-related aspects, however, have been consistently ignored. This work proposes to study fatigue in MDF, including the following factors: the basic concepts of MDF and fatigue and the statistical design of fatigue experiments in MDF, with the purpose of obtaining accurate information for analysis by means of statistical methods. The results of our tests revealed that the statistical model is suitable to fit the number of cycles in intermediary S and f levels and to determine the levels of the factors that maximize the total number of cycles to failure. It was also found that the proposed design is of great practical interest for fatigue strength in the tension in wood and wood derivatives.

  20. Statistical design of experiments as a tool in mass spectrometry.

    Science.gov (United States)

    Riter, Leah S; Vitek, Olga; Gooding, Karen M; Hodge, Barry D; Julian, Randall K

    2005-05-01

    This Tutorial is an introduction to statistical design of experiments (DOE) with focus on demonstration of how DOE can be useful to the mass spectrometrist. In contrast with the commonly used one factor at a time approach, DOE methods address the issue of interaction of variables and are generally more efficient. The complex problem of optimizing data-dependent acquisition parameters in a bottom-up proteomics LC-MS/MS analysis is used as an example of the power of the technique. Using DOE, a new data-dependent method was developed that improved the quantity of confidently identified peptides from rat serum.

  1. Design Overview of the DM Radio Pathfinder Experiment

    OpenAIRE

    Silva-Feaver, Maximiliano; Chaudhuri, Saptarshi; Cho, Hsiao-Mei; Dawson, Carl; Graham, Peter; Irwin, Kent; Kuenstner, Stephen; Li, Dale; Mardon, Jeremy; Moseley, Harvey; Mule, Richard; Phipps, Arran; Rajendran, Surjeet; Steffen, Zach; Young, Betty

    2016-01-01

    We introduce the DM Radio, a dual search for axion and hidden photon dark matter using a tunable superconducting lumped-element resonator. We discuss the prototype DM Radio Pathfinder experiment, which will probe hidden photons in the 500 peV (100 kHz)-50 neV (10 MHz) mass range. We detail the design of the various components: the LC resonant detector, the resonant frequency tuning procedure, the differential SQUID readout circuit, the shielding, and the cryogenic mounting structure. We prese...

  2. The design and analysis of transposon insertion sequencing experiments.

    Science.gov (United States)

    Chao, Michael C; Abel, Sören; Davis, Brigid M; Waldor, Matthew K

    2016-02-01

    Transposon insertion sequencing (TIS) is a powerful approach that can be extensively applied to the genome-wide definition of loci that are required for bacterial growth under diverse conditions. However, experimental design choices and stochastic biological processes can heavily influence the results of TIS experiments and affect downstream statistical analysis. In this Opinion article, we discuss TIS experimental parameters and how these factors relate to the benefits and limitations of the various statistical frameworks that can be applied to the computational analysis of TIS data.

  3. Frac-and-pack stimulation: Application, design, and field experience

    Energy Technology Data Exchange (ETDEWEB)

    Roodhart, L.P.; Fokker, P.A.; Davies, D.R.; Shlyapobersky, J.; Wong, G.K.

    1994-03-01

    This paper discusses the criteria for selecting wells to be frac-and-packed. The authors show how systematic study of the inflow performance can be used to assess the potential of frac-and-packed wells, to identify the controlling factors, and to optimize design parameters. They also show that fracture conductivity is often the key to successful treatment. This conductivity depends largely on proppant size; formation permeability damage around the created fracture has less effect. Appropriate allowance needs to be made for flow restrictions caused by the presence of the perforations, partial penetration, and non-Darcy effects. They describe the application of the overpressure-calibrated hydraulic fracture model in frac-and-pack treatment design, and discuss some operational considerations with reference to field examples. The full potential of this promising new completion method can be achieved only if the design is tailored to the individual well. This demands high-quality input data, which can be obtained only from a calibration test. This paper presents their strategy for frac-and-pack design, drawing on examples from field experience. They also point out several areas that the industry needs to address, such as the sizing of proppant in soft formations and the interaction between fracturing fluids and resin in resin-coated proppant.

  4. Designing Statistical Language Learners: Experiments on Noun Compounds

    Science.gov (United States)

    Lauer, Mark

    1996-09-01

    The goal of this thesis is to advance the exploration of the statistical language learning design space. In pursuit of that goal, the thesis makes two main theoretical contributions: (i) it identifies a new class of designs by specifying an architecture for natural language analysis in which probabilities are given to semantic forms rather than to more superficial linguistic elements; and (ii) it explores the development of a mathematical theory to predict the expected accuracy of statistical language learning systems in terms of the volume of data used to train them. The theoretical work is illustrated by applying statistical language learning designs to the analysis of noun compounds. Both syntactic and semantic analysis of noun compounds are attempted using the proposed architecture. Empirical comparisons demonstrate that the proposed syntactic model is significantly better than those previously suggested, approaching the performance of human judges on the same task, and that the proposed semantic model, the first statistical approach to this problem, exhibits significantly better accuracy than the baseline strategy. These results suggest that the new class of designs identified is a promising one. The experiments also serve to highlight the need for a widely applicable theory of data requirements.

  5. OneClick: A Program for Designing Focused Mutagenesis Experiments

    Directory of Open Access Journals (Sweden)

    Mark Warburton

    2015-07-01

    Full Text Available OneClick is a user-friendly web-based program, developed specifically for quick-and-easy design of focused mutagenesis experiments (e.g., site-directed mutagenesis and saturation mutagenesis. Written in Perl and developed into a web application using CGI programming, OneClick offers a step-by-step experimental design, from mutagenic primer design to analysis of a mutant library. Upon input of a DNA sequence encoding the protein of interest, OneClick designs the mutagenic primers according to user input, e.g., amino acid position to mutate, type of amino acid substitutions (e.g., substitution to a group of amino acids with similar chemical property and type of mutagenic primers. OneClick has incorporated an extensive range of commercially available plasmids and DNA polymerases suitable for focused mutagenesis. Therefore, OneClick also provides information on PCR mixture preparation, thermal cycling condition, expected size of PCR product and agar plate to use during bacterial transformation. Importantly, OneClick also carries out a statistical analysis of the resultant mutant library, information of which is important for selection/screening. OneClick is a unique and invaluable tool in the field of protein engineering, allowing for systematic construction of a mutant library or a protein variant and simplifying molecular biology work. The program will be constantly updated to reflect the rapid development in the fields of molecular biology and protein engineering.

  6. Optimal experiment design for time-lapse traveltime tomography

    Energy Technology Data Exchange (ETDEWEB)

    Ajo-Franklin, J.B.

    2009-10-01

    Geophysical monitoring techniques offer the only noninvasive approach capable of assessing both the spatial and temporal dynamics of subsurface fluid processes. Increasingly, permanent sensor arrays in boreholes and on the ocean floor are being deployed to improve the repeatability and increase the temporal sampling of monitoring surveys. Because permanent arrays require a large up-front capital investment and are difficult (or impossible) to re-configure once installed, a premium is placed on selecting a geometry capable of imaging the desired target at minimum cost. We present a simple approach to optimizing downhole sensor configurations for monitoring experiments making use of differential seismic traveltimes. In our case, we use a design quality metric based on the accuracy of tomographic reconstructions for a suite of imaging targets. By not requiring an explicit singular value decomposition of the forward operator, evaluation of this objective function scales to problems with a large number of unknowns. We also restrict the design problem by recasting the array geometry into a low dimensional form more suitable for optimization at a reasonable computational cost. We test two search algorithms on the design problem: the Nelder-Mead downhill simplex method and the Multilevel Coordinate Search algorithm. The algorithm is tested for four crosswell acquisition scenarios relevant to continuous seismic monitoring, a two parameter array optimization, several scenarios involving four parameter length/offset optimizations, and a comparison of optimal multi-source designs. In the last case, we also examine trade-offs between source sparsity and the quality of tomographic reconstructions. One general observation is that asymmetric array lengths improve localized image quality in crosswell experiments with a small number of sources and a large number of receivers. Preliminary results also suggest that high-quality differential images can be generated using only a small

  7. Safeguard By Design Lessons Learned from DOE Experience Integrating Safety into Design

    Energy Technology Data Exchange (ETDEWEB)

    Hockert, John; Burbank, Roberta L.

    2010-04-13

    This paper identifies the lessons to be learned for the institutionalization of Safeguards by Design (SBD) from the Department of Energy (DOE) experience developing and implementing DOE-STD-1189-2008, Integration of Safety into the Design Process. The experience is valuable because of the similarity of the challenges of integrating safety and safeguards into the design process. The paper reviews the content and development of DOE-STD-1189-2008 from its initial concept in January 2006 to its issuance in March 2008. Lessons learned are identified in the areas of the development and structure of requirements for the SBD process; the target audience for SBD requirements and guidance, the need for a graded approach to SBD, and a possible strategy for development and implementation of SBD within DOE.

  8. Uniform designs for mixture-amount experiments and for mixture experiments under order restrictions

    Institute of Scientific and Technical Information of China (English)

    田国梁; 方开泰

    1999-01-01

    With order statistics of the uniform distribution on [0, 1], exponential and beta distributions, a stochastic representation is obtained for the uniform distribution over various domains, where A-type domains are closely associated with reliability growth analysis, order restricted statistical inference and isotonic regression theory, V-type domains are connected with the mixture-amount experiments, and T-type domains are well related to mixture experiments. With these stochastic representations, the corresponding uniform distribution and number-theoretic nets can be generated. This approach seems to be new and is called order statistics method. Some examples on reliability growth analysis and experimental design are presented.

  9. Measurement of the gravitational quantities g and G: How ideas for precision measurement experiments come about

    Science.gov (United States)

    Faller, James

    2012-02-01

    I will talk about g and G whose determinations go back to some of the earliest measurements in the history of metrology. Although today's measurement accuracy for g, the free-fall acceleration due to the Earth's gravity, has improved by nearly nine orders of magnitude, the measurement accuracy of G, the Newtonian Constant of Gravitation, has improved by only two orders of magnitude over its 300 year measurement history. I will discuss what has driven (and impeded) this progress, and how ideas for improvements in these measurements have helped advance the frontiers of measurement science. Finally, I will point out the interconnectedness of all precision measurement experiments.

  10. Design of High Precision Temperature Measurement System based on Labview

    OpenAIRE

    Weimin Zhu; Jin Liu; Haima Yang; Chaochao Yan

    2015-01-01

    Using the LabVIEW software platform, a high precision temperature measuring device is designed based on the principle of the thermocouple. The system uses the STM32 MCU as the main control chip, using AD7076 analog digital converter. The converter has 8 channel, synchronous sampling, and bipolar input. Improving the precision of temperature measurement by cold end compensation, fitting and other measures. The test results show that, the device temperature measurement precision can reach ±0.1 ...

  11. Top Quark Properties Measurements with the ATLAS Experiment

    Science.gov (United States)

    Murillo Quijada, J. A.

    2016-10-01

    Results on recent measurements of top quark properties with the ATLAS experiment at the European Laboratory, CERN, are shown. The measurements are performed using the full data set recorded during the LHC Run-I. The full data set consists of a collected integrated luminosities ∫Tdt of 4.6 fb-1 recorded at a proton-proton collision energy of √s = 7 TeV and 20.3 fb-1 collected at 8 TeV. The mentioned top quark properties include: spin correlation, charge asymmetry, W-boson polarization, color flow, top mass and top width in events with a top and anti-top quark pair (tt). An introduction to the LHC and the ATLAS detector is included and latest main results from this experiment. The contents include the current world benchmark results for the different properties and plans for future measurements during the ongoing LHC Run-II.

  12. Measurement of the Σ- Charge Radius in the Selex Experiment

    Science.gov (United States)

    Simon, J.

    2000-01-01

    The charge radius of the Σ- has been determined by direct elastic scattering on shell electrons. The measurement was performed in the framework of the Selex (E781) charm hadroproduction experiment at Fermilab. Selex employs 600 GeV/c high-intensity Σ-/π- and p/π+ beams and a three-stage magnetic spectrometer covering 0.1 <= xF <= 1.0. The scattering angles and momenta of the hadron and the electron were measured with high precision using silicon microstrip detectors. Particle identification was provided by two TRDs. For control of systematic effects the charge radii of the proton and the π- were measured with the same apparatus and are found to be consistent with previous experiments.

  13. Design of Customer Satisfaction Measurement Index System of EMS Service

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    This paper discusses the design of a customer satisfaction measurement index system of erpress mail service. It presents objectives and principles of the design based on hierarchical structures. We have devised a diagram for modeling customer satisfaction, and a detailed analysis of customer satisfaction is conducted. This paper presents our customer satisfaction model and analysis results.

  14. Temperature measurement during solidification of thin wall ductile cast iron. Part 1: Theory and experiment

    DEFF Research Database (Denmark)

    Pedersen, Karl Martin; Tiedje, Niels Skat

    2008-01-01

    Temperature measurement using thermocouples (TC’s) influence solidification of the casting, especially in thin wall castings. The problems regarding acquisition of detailed cooling curves from thin walled castings is discussed. Experiments were conducted where custom made TC’s were used to acquire...... cooing curves in thin wall ductile iron castings. The experiments show how TC’s of different design interact with the melt and how TC design and surface quality affect the results of the data acquisition. It is discussed which precautions should be taken to ensure reliable acquisition of cooling curves...

  15. Accelerating Vaccine Formulation Development Using Design of Experiment Stability Studies.

    Science.gov (United States)

    Ahl, Patrick L; Mensch, Christopher; Hu, Binghua; Pixley, Heidi; Zhang, Lan; Dieter, Lance; Russell, Ryann; Smith, William J; Przysiecki, Craig; Kosinski, Mike; Blue, Jeffrey T

    2016-10-01

    Vaccine drug product thermal stability often depends on formulation input factors and how they interact. Scientific understanding and professional experience typically allows vaccine formulators to accurately predict the thermal stability output based on formulation input factors such as pH, ionic strength, and excipients. Thermal stability predictions, however, are not enough for regulators. Stability claims must be supported by experimental data. The Quality by Design approach of Design of Experiment (DoE) is well suited to describe formulation outputs such as thermal stability in terms of formulation input factors. A DoE approach particularly at elevated temperatures that induce accelerated degradation can provide empirical understanding of how vaccine formulation input factors and interactions affect vaccine stability output performance. This is possible even when clear scientific understanding of particular formulation stability mechanisms are lacking. A DoE approach was used in an accelerated 37(°)C stability study of an aluminum adjuvant Neisseria meningitidis serogroup B vaccine. Formulation stability differences were identified after only 15 days into the study. We believe this study demonstrates the power of combining DoE methodology with accelerated stress stability studies to accelerate and improve vaccine formulation development programs particularly during the preformulation stage. Copyright © 2016 American Pharmacists Association®. Published by Elsevier Inc. All rights reserved.

  16. The Science of Design in Flume Experiments: A Research Experience for Undergraduates at Humboldt State University

    Science.gov (United States)

    Cashman, E.; Amoussou, G.; Calderon, J.; Castro, A.

    2005-12-01

    Humboldt State University hosted an NSF-sponsored Research Experience for Undergraduates (REU) during the summer of 2005 entitled "The Science of Design". This REU was a joint venture between the Computer Science, Math and Environmental Resources Engineering Departments. Eight students participated in research projects including energy efficient building design, fish population modeling, design of computer code requirements and bedload transport flume experiments. The recruitment of students for this REU emphasized heavily the participation of underrepresented students in the sciences. As a result, five of the eight students were women, four of the eight students were non-white, and three of the eight students were first-generation college students. The research presented in this paper began as a proposal to evaluate models that are commonly used to predict bedload transport. Many of these models relate bedload transport to hydraulic variables such as water velocity, water depth and bed slope and sediment properties such as particle size and distribution. We used a laboratory flume to conduct controlled experiments to evaluate a select number of these mathematical models. The research evolved over the eight-week program and the students were only able to touch on the evaluation of bedload transport models using experimental data during the last week of the program. However, the students did collect valuable data from multiple runs and analyzed data for variability in bedload transport with respect to flow discharge, flow velocity, water depth and channel slope. A significant finding from their research is that there is large variation in bedload transport under constant hydraulic conditions. These results will be analyzed further by the advising faculty and other undergraduate students. The focus on the "Science of Design" enabled students to respond to experimental results and adjust their research so that the experience was educational and worthwhile for both

  17. Lidar Uncertainty Measurement Experiment (LUMEX) - Understanding Sampling Errors

    Science.gov (United States)

    Choukulkar, A.; Brewer, W. A.; Banta, R. M.; Hardesty, M.; Pichugina, Y.; Senff, Christoph; Sandberg, S.; Weickmann, A.; Carroll, B.; Delgado, R.; Muschinski, A.

    2016-06-01

    Coherent Doppler LIDAR (Light Detection and Ranging) has been widely used to provide measurements of several boundary layer parameters such as profiles of wind speed, wind direction, vertical velocity statistics, mixing layer heights and turbulent kinetic energy (TKE). An important aspect of providing this wide range of meteorological data is to properly characterize the uncertainty associated with these measurements. With the above intent in mind, the Lidar Uncertainty Measurement Experiment (LUMEX) was conducted at Erie, Colorado during the period June 23rd to July 13th, 2014. The major goals of this experiment were the following: Characterize sampling error for vertical velocity statistics Analyze sensitivities of different Doppler lidar systems Compare various single and dual Doppler retrieval techniques Characterize error of spatial representativeness for separation distances up to 3 km Validate turbulence analysis techniques and retrievals from Doppler lidars This experiment brought together 5 Doppler lidars, both commercial and research grade, for a period of three weeks for a comprehensive intercomparison study. The Doppler lidars were deployed at the Boulder Atmospheric Observatory (BAO) site in Erie, site of a 300 m meteorological tower. This tower was instrumented with six sonic anemometers at levels from 50 m to 300 m with 50 m vertical spacing. A brief overview of the experiment outline and deployment will be presented. Results from the sampling error analysis and its implications on scanning strategy will be discussed.

  18. Design of MEMS accelerometer based acceleration measurement system for automobiles

    Science.gov (United States)

    Venkatesh, K. Arun; Mathivanan, N.

    2012-10-01

    Design of an acceleration measurement system using a MEMS accelerometer to measure acceleration of automobiles in all the three axes is presented. Electronic stability control and anti-lock breaking systems in automobiles use the acceleration measurements to offer safety in driving. The system uses an ARM microcontroller to quantize the outputs of accelerometer and save the measurement data on a microSD card. A LabVIEW program has been developed to analyze the longitudinal acceleration measurement data and test the measurement system. Random noises generated and added with measurement data during measurement are filtered by a Kalman filter implemented in LabVIEW. Longitudinal velocity of the vehicle is computed from the measurement data and displayed on a graphical chart. Typical measurement of velocity of a vehicle at different accelerations and decelerations is presented.

  19. Experiencing Design “Pleasures”: Framework for Pleasurable Experiences On Designed Objects

    Directory of Open Access Journals (Sweden)

    Achmad Syarief

    2008-07-01

    Full Text Available This paper explores the importance of human perceptual experiences toward objects, an effort to understand how human (as users of object experiencing pleasures when interacting with a designed object. Having the purpose to explore the theoretical structure of human and object interaction, the paper contextualizes the concept of pleasurable experience in product use by (1 understanding the conceptual traces of “pleasure in design” in the history of design thinking (e.g. modernism and post-modernism, (2 correlating the identified traces with research results from other related field (e.g. cognitive psychology to clarify the conceptual mechanism of human pleasurable experience, and (3 synthesizing results to define the theoretical framework in assessing pleasurable experience when human interact with a designed object. Following the path of Patrick Jordan’s theory on the pleasure in human factors, the study indicates that there are four identified functions of pleasure in product use: pleasure of using, pleasure of interacting, pleasure of understanding, and pleasure of owning. Those dimensions represent the experiential aspect of arousal (on the continuum of temporal – perpetual and interactivity (on the continuum of individual – group.

  20. Investigation of a design performance measurement tool for improving collaborative design during a design process

    OpenAIRE

    Yin, Yuanyuan

    2009-01-01

    This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. With rapid growth of global competition, the design process is becoming more and more complex due largely to cross-functional team collaboration, dynamic design processes, and unpredictable design outcomes. Thus, it is becoming progressively more difficult to support and improve design activities effectively during a design process, especially from a collaboration perspective. Although a grea...

  1. Scaling and design of landslide and debris-flow experiments

    Science.gov (United States)

    Iverson, Richard M.

    2015-01-01

    Scaling plays a crucial role in designing experiments aimed at understanding the behavior of landslides, debris flows, and other geomorphic phenomena involving grain-fluid mixtures. Scaling can be addressed by using dimensional analysis or – more rigorously – by normalizing differential equations that describe the evolving dynamics of the system. Both of these approaches show that, relative to full-scale natural events, miniaturized landslides and debris flows exhibit disproportionately large effects of viscous shear resistance and cohesion as well as disproportionately small effects of excess pore-fluid pressure that is generated by debris dilation or contraction. This behavioral divergence grows in proportion to H3, where H is the thickness of a moving mass. Therefore, to maximize geomorphological relevance, experiments with wet landslides and debris flows must be conducted at the largest feasible scales. Another important consideration is that, unlike stream flows, landslides and debris flows accelerate from statically balanced initial states. Thus, no characteristic macroscopic velocity exists to guide experiment scaling and design. On the other hand, macroscopic gravity-driven motion of landslides and debris flows evolves over a characteristic time scale (L/g)1/2, where g is the magnitude of gravitational acceleration and L is the characteristic length of the moving mass. Grain-scale stress generation within the mass occurs on a shorter time scale, H/(gL)1/2, which is inversely proportional to the depth-averaged material shear rate. A separation of these two time scales exists if the criterion H/L landslide and debris-flow behavior but cannot be used to study macroscopic landslide or debris-flow dynamics.

  2. Measurements of the CKM angle $\\gamma$ at the LHCb experiment

    CERN Document Server

    AUTHOR|(INSPIRE)INSPIRE-00388653; Malde, Sneha

    Two measurements of the Cabibbo-Kobayashi-Maskawa angle $\\gamma$ using $B \\to D K$ and $B^{0} \\to D K^{\\ast 0}$ decays are presented in this thesis. The subsequent $D$ meson decays to the $K_{S}^{0} \\pi^{+} \\pi^{-}$ and $K_{S}^{0} K^{+} K^{-}$ final states are studied using a binned Dalitz plot analysis. The $D$ strong-phase variation over the Dalitz plot is taken from measurements performed at the CLEO-c experiment, making the analysis independent of a model to describe the $D$ decay amplitude. Both measurements are performed using proton-proton collision data collected by the Large Hadron Collider beauty (LHCb) experiment in 2011 and 2012, corresponding to an integrated luminosity of 3 fb$^{-1}$ at centre-of-mass energies $\\sqrt{s}=$ 7 TeV and 8 TeV. The value $\\gamma=(62\\,^{+15}_{-14})^{\\circ}$ is measured using $B \\to D K$ decays and $\\gamma=(71\\pm20)^{\\circ}$ is measured using $B^{0} \\to D K^{\\ast 0}$ decays, with a second solution for each value corresponding to $\\gamma+180^{\\circ}$. The measurement...

  3. Parameter Screening and Optimisation for ILP Using Designed Experiments

    Science.gov (United States)

    Srinivasan, Ashwin; Ramakrishnan, Ganesh

    Reports of experiments conducted with an Inductive Logic Programming system rarely describe how specific values of parameters of the system are arrived at when constructing models. Usually, no attempt is made to identify sensitive parameters, and those that are used are often given "factory-supplied" default values, or values obtained from some non-systematic exploratory analysis. The immediate consequence of this is, of course, that it is not clear if better models could have been obtained if some form of parameter selection and optimisation had been performed. Questions follow inevitably on the experiments themselves: specifically, are all algorithms being treated fairly, and is the exploratory phase sufficiently well-defined to allow the experiments to be replicated? In this paper, we investigate the use of parameter selection and optimisation techniques grouped under the study of experimental design. Screening and "response surface" methods determine, in turn, sensitive parameters and good values for these parameters. This combined use of parameter selection and response surface-driven optimisation has a long history of application in industrial engineering, and its role in ILP is investigated using two well-known benchmarks. The results suggest that computational overheads from this preliminary phase are not substantial, and that much can be gained, both on improving system performance and on enabling controlled experimentation, by adopting well-established procedures such as the ones proposed here.

  4. Design of MagLIF experiments using the Z facility

    Science.gov (United States)

    Sefkow, Adam

    2013-10-01

    The MagLIF (Magnetized Liner Inertial Fusion) concept has been presented as a path toward obtaining substantial fusion yields using the Z facility, and related experiments have begun in earnest at Sandia National Laboratories. We present fully integrated numerical magnetohydrodynamic simulations of the MagLIF concept, which include laser preheating of the fuel, the presence of electrodes, and end loss effects. These simulations have been used to design neutron-producing integrated MagLIF experiments on the Z facility for the capabilities that presently exist, namely, D2 fuel, peak currents of Imax 15-18 MA, pre-seeded axial magnetic fields of Bz0 = 7-10 T, and laser preheat energies of Elaser = 2-3 kJ delivered in 2 ns. The first fully integrated experiments, based on these simulations, are planned to occur in 2013. Neutron yields in excess of 1011 are predicted with the available laser preheat energy and accelerator drive energy. In several years, we plan to upgrade the laser to increase Elaser = by several more kJ, provide Bz0 up to 30 T, deliver Imax 22 MA or more to the load, and develop the capability to use DT fuel. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  5. Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs

    Science.gov (United States)

    Trautwein, Uwe; Schneider, Christian; Thomä, Reiner

    2005-12-01

    This paper describes the methodology and the results of performance investigations on a multiple-input multiple-output (MIMO) transceiver scheme for frequency-selective radio channels. The method relies on offline simulations and employs real-time MIMO channel sounder measurement data to ensure a realistic channel modeling. Thus it can be classified in between the performance evaluation using some predefined channel models and the evaluation of a prototype hardware in field experiments. New aspects for the simulation setup are discussed, which are frequently ignored when using simpler model-based evaluations. Example simulations are provided for an iterative ("turbo") MIMO equalizer concept. The dependency of the achievable bit error rate performance on the propagation characteristics and on the variation in some system design parameters is shown, whereas the antenna constellation is of particular concern for MIMO systems. Although in many of the considered constellations turbo MIMO equalization appears feasible in real field scenarios, there exist cases with poor performance as well, indicating that in practical applications link adaptation of the transmitter and receiver processing to the environment is necessary.

  6. Measurement-Based Performance Evaluation of Advanced MIMO Transceiver Designs

    Directory of Open Access Journals (Sweden)

    Schneider Christian

    2005-01-01

    Full Text Available This paper describes the methodology and the results of performance investigations on a multiple-input multiple-output (MIMO transceiver scheme for frequency-selective radio channels. The method relies on offline simulations and employs real-time MIMO channel sounder measurement data to ensure a realistic channel modeling. Thus it can be classified in between the performance evaluation using some predefined channel models and the evaluation of a prototype hardware in field experiments. New aspects for the simulation setup are discussed, which are frequently ignored when using simpler model-based evaluations. Example simulations are provided for an iterative ("turbo" MIMO equalizer concept. The dependency of the achievable bit error rate performance on the propagation characteristics and on the variation in some system design parameters is shown, whereas the antenna constellation is of particular concern for MIMO systems. Although in many of the considered constellations turbo MIMO equalization appears feasible in real field scenarios, there exist cases with poor performance as well, indicating that in practical applications link adaptation of the transmitter and receiver processing to the environment is necessary.

  7. Designing a future Conditions Database based on LHC experience

    CERN Document Server

    Formica, Andrea; The ATLAS collaboration; Gallas, Elizabeth; Govi, Giacomo; Lehmann Miotto, Giovanna; Pfeiffer, Andreas

    2015-01-01

    The ATLAS and CMS Conditions Database infrastructures have served each of the respective experiments well through LHC Run 1, providing efficient access to a wide variety of conditions information needed in online data taking and offline processing and analysis. During the long shutdown between Run 1 and Run 2, we have taken various measures to improve our systems for Run 2. In some cases, a drastic change was not possible because of the relatively short time scale to prepare for Run 2. In this process, and in the process of comparing to the systems used by other experiments, we realized that for Run 3, we should consider more fundamental changes and possibilities. We seek changes which would streamline conditions data management, improve monitoring tools, better integrate the use of metadata, incorporate analytics to better understand conditions usage, as well as investigate fundamental changes in the storage technology, which might be more efficient while minimizing maintenance of the data as well as simplif...

  8. Target Station Design for the Mu2e Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Pronskikh, Vitaly [Fermilab; Ambrosio, Giorgio [Fermilab; Campbell, Michael [Fermilab; Coleman, Richard [Fermilab; Ginther, George [Fermilab; Kashikhin, Vadim [Fermilab; Krempetz, Kurt [Fermilab; Lamm, Michael [Fermilab; Lee, Ang [Fermilab; Leveling, Anthony [Fermilab; Mokhov, Nikolai [Fermilab; Nagaslaev, Vladimir [Fermilab; Stefanik, Andrew [Fermilab; Striganov, Sergei [Fermilab; Werkema, Steven [Fermilab; Bartoszek, Larry [Technicare; Densham, Chris [Rutherford; Loveridge, Peter [Rutherford; Lynch, Kevin [BMCC, New York; Popp, James [BMCC, New York

    2014-07-01

    The Mu2e experiment at Fermilab is devoted to search for the conversion of a negative muon into an electron in the field of a nucleus without emission of neutrinos. One of the main parts of the Mu2e experimental setup is its Target Station in which negative pions are generated in interactions of the 8-GeV primary proton beam with a tungsten target. A large-aperture 5-T superconducting production solenoid (PS) enhances pion collection, and an S-shaped transport solenoid (TS) delivers muons and pions to the Mu2e detector. The heat and radiation shield (HRS) protects the PS and the first TS coils. A beam dump absorbs the spent beam. In order for the PS superconducting magnet to operate reliably the sophisticated HRS was designed and optimized for performance and cost. The beam dump was designed to absorb the spent beam and maintaining its temperature and air activation in the hall at the allowable level. Comprehensive MARS15 simulations have been carried out to optimize all the parts while maximizing muon yield. Results of simulations of critical radiation quantities and their implications on the overall Target Station design and integration will be reported.

  9. Nanosatellite optical downlink experiment: design, simulation, and prototyping

    Science.gov (United States)

    Clements, Emily; Aniceto, Raichelle; Barnes, Derek; Caplan, David; Clark, James; Portillo, Iñigo del; Haughwout, Christian; Khatsenko, Maxim; Kingsbury, Ryan; Lee, Myron; Morgan, Rachel; Twichell, Jonathan; Riesing, Kathleen; Yoon, Hyosang; Ziegler, Caleb; Cahoy, Kerri

    2016-11-01

    The nanosatellite optical downlink experiment (NODE) implements a free-space optical communications (lasercom) capability on a CubeSat platform that can support low earth orbit (LEO) to ground downlink rates>10 Mbps. A primary goal of NODE is to leverage commercially available technologies to provide a scalable and cost-effective alternative to radio-frequency-based communications. The NODE transmitter uses a 200-mW 1550-nm master-oscillator power-amplifier design using power-efficient M-ary pulse position modulation. To facilitate pointing the 0.12-deg downlink beam, NODE augments spacecraft body pointing with a microelectromechanical fast steering mirror (FSM) and uses an 850-nm uplink beacon to an onboard CCD camera. The 30-cm aperture ground telescope uses an infrared camera and FSM for tracking to an avalanche photodiode detector-based receiver. Here, we describe our approach to transition prototype transmitter and receiver designs to a full end-to-end CubeSat-scale system. This includes link budget refinement, drive electronics miniaturization, packaging reduction, improvements to pointing and attitude estimation, implementation of modulation, coding, and interleaving, and ground station receiver design. We capture trades and technology development needs and outline plans for integrated system ground testing.

  10. The usefulness of systematic reviews of animal experiments for the design of preclinical and clinical studies.

    Science.gov (United States)

    de Vries, Rob B M; Wever, Kimberley E; Avey, Marc T; Stephens, Martin L; Sena, Emily S; Leenaars, Marlies

    2014-01-01

    The question of how animal studies should be designed, conducted, and analyzed remains underexposed in societal debates on animal experimentation. This is not only a scientific but also a moral question. After all, if animal experiments are not appropriately designed, conducted, and analyzed, the results produced are unlikely to be reliable and the animals have in effect been wasted. In this article, we focus on one particular method to address this moral question, namely systematic reviews of previously performed animal experiments. We discuss how the design, conduct, and analysis of future (animal and human) experiments may be optimized through such systematic reviews. In particular, we illustrate how these reviews can help improve the methodological quality of animal experiments, make the choice of an animal model and the translation of animal data to the clinic more evidence-based, and implement the 3Rs. Moreover, we discuss which measures are being taken and which need to be taken in the future to ensure that systematic reviews will actually contribute to optimizing experimental design and thereby to meeting a necessary condition for making the use of animals in these experiments justified.

  11. The Usefulness of Systematic Reviews of Animal Experiments for the Design of Preclinical and Clinical Studies

    Science.gov (United States)

    de Vries, Rob B. M.; Wever, Kimberley E.; Avey, Marc T.; Stephens, Martin L.; Sena, Emily S.; Leenaars, Marlies

    2014-01-01

    The question of how animal studies should be designed, conducted, and analyzed remains underexposed in societal debates on animal experimentation. This is not only a scientific but also a moral question. After all, if animal experiments are not appropriately designed, conducted, and analyzed, the results produced are unlikely to be reliable and the animals have in effect been wasted. In this article, we focus on one particular method to address this moral question, namely systematic reviews of previously performed animal experiments. We discuss how the design, conduct, and analysis of future (animal and human) experiments may be optimized through such systematic reviews. In particular, we illustrate how these reviews can help improve the methodological quality of animal experiments, make the choice of an animal model and the translation of animal data to the clinic more evidence-based, and implement the 3Rs. Moreover, we discuss which measures are being taken and which need to be taken in the future to ensure that systematic reviews will actually contribute to optimizing experimental design and thereby to meeting a necessary condition for making the use of animals in these experiments justified. PMID:25541545

  12. Carbon Taxes: A Review of Experience and Policy Design Considerations

    Energy Technology Data Exchange (ETDEWEB)

    Sumner, J.; Bird, L.; Smith, H.

    2009-12-01

    State and local governments in the United States are evaluating a wide range of policies to reduce carbon emissions, including, in some instances, carbon taxes, which have existed internationally for nearly 20 years. This report reviews existing carbon tax policies both internationally and in the United States. It also analyzes carbon policy design and effectiveness. Design considerations include which sectors to tax, where to set the tax rate, how to use tax revenues, what the impact will be on consumers, and how to ensure emissions reduction goals are achieved. Emission reductions that are due to carbon taxes can be difficult to measure, though some jurisdictions have quantified reductions in overall emissions and other jurisdictions have examined impacts that are due to programs funded by carbon tax revenues.

  13. Carbon Taxes. A Review of Experience and Policy Design Considerations

    Energy Technology Data Exchange (ETDEWEB)

    Sumner, Jenny [National Renewable Energy Lab. (NREL), Golden, CO (United States); Bird, Lori [National Renewable Energy Lab. (NREL), Golden, CO (United States); Smith, Hillary [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2009-12-01

    State and local governments in the United States are evaluating a wide range of policies to reduce carbon emissions, including, in some instances, carbon taxes, which have existed internationally for nearly 20 years. This report reviews existing carbon tax policies both internationally and in the United States. It also analyzes carbon policy design and effectiveness. Design considerations include which sectors to tax, where to set the tax rate, how to use tax revenues, what the impact will be on consumers, and how to ensure emissions reduction goals are achieved. Emission reductions that are due to carbon taxes can be difficult to measure, though some jurisdictions have quantified reductions in overall emissions and other jurisdictions have examined impacts that are due to programs funded by carbon tax revenues.

  14. Mini-columns for Conducting Breakthrough Experiments. Design and Construction

    Energy Technology Data Exchange (ETDEWEB)

    Dittrich, Timothy M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Reimus, Paul William [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Ware, Stuart Douglas [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-06-11

    Experiments with moderately and strongly sorbing radionuclides (i.e., U, Cs, Am) have shown that sorption between experimental solutions and traditional column materials must be accounted for to accurately determine stationary phase or porous media sorption properties (i.e., sorption site density, sorption site reaction rate coefficients, and partition coefficients or Kd values). This report details the materials and construction of mini-columns for use in breakthrough columns to allow for accurate measurement and modeling of sorption parameters. Material selection, construction techniques, wet packing of columns, tubing connections, and lessons learned are addressed.

  15. Cosmic-ray interaction data for designing biological experiments in space

    Science.gov (United States)

    Straume, T.; Slaba, T. C.; Bhattacharya, S.; Braby, L. A.

    2017-05-01

    There is growing interest in flying biological experiments beyond low-Earth orbit (LEO) to measure biological responses potentially relevant to those expected during a human mission to Mars. Such experiments could be payloads onboard precursor missions, including unmanned private-public partnerships, as well as small low-cost spacecraft (satellites) designed specifically for biosentinel-type missions. It is the purpose of this paper to provide physical cosmic-ray interaction data and related information useful to biologists who may be planning such experiments. It is not the objective here to actually design such experiments or provide radiobiological response functions, which would be specific for each experiment and biological endpoint. Nuclide-specific flux and dose rates were calculated using OLTARIS and these results were used to determine particle traversal rates and doses in hypothetical biological targets. Comparisons are provided between GCR in interplanetary space and inside the ISS. Calculated probabilistic estimates of dose from solar particle events are also presented. Although the focus here is on biological experiments, the information provided may be useful for designing other payloads as well if the space radiation environment is a factor to be considered.

  16. FLOSS UX Design: An Analysis of User Experience Design in Firefox and OpenOffice.org

    Science.gov (United States)

    Bach, Paula M.; Carroll, John M.

    We describe two cases of open user experience (UX) design using the Firefox web browser and OpenOffice.org office suite as case studies. We analyze the social complexity of integrating UX practices into the two open source projects using activity awareness, a framework for understanding team performance in collective endeavors of significant scope, duration, and complexity. The facets of activity awareness are common ground, community of practice, social capital, and human development. We found that differences between the communities include different strategies for community building, UX status in the community, type of open UX design, and different ways to share information.

  17. Design techniques for large scale linear measurement systems

    Energy Technology Data Exchange (ETDEWEB)

    Candy, J.V.

    1979-03-01

    Techniques to design measurement schemes for systems modeled by large scale linear time invariant systems, i.e., physical systems modeled by a large number (> 5) of ordinary differential equations, are described. The techniques are based on transforming the physical system model to a coordinate system facilitating the design and then transforming back to the original coordinates. An example of a three-stage, four-species, extraction column used in the reprocessing of spent nuclear fuel elements is presented. The basic ideas are briefly discussed in the case of noisy measurements. An example using a plutonium nitrate storage vessel (reprocessing) with measurement uncertainty is also presented.

  18. 反应堆冷却剂泵转速测量关键部件辐照试验设计%Design of Irradiation Experiment for Key Component of RCP Speed Measuring

    Institute of Scientific and Technical Information of China (English)

    吴茜; 邱建文

    2016-01-01

    核电厂RCP系统是压水堆核电厂的关键设备之一。主泵转速监测设备的主要作用是监测反应堆冷却剂泵的转速。主泵转速频率电流转换器作为主泵转速监测设备的关键部件,属于K2类鉴定要求范畴,需要完成辐照试验。本文根据核电站现场辐照条件及用户使用寿命的需求,对辐照试验的试验方案和试验环境进行了设计。试验结论表明,试验方案可行有效,经验证,该设备在安装现场辐照剂量率不大于15mSv/h的环境下,能够满足5年正常工作的可靠性要求。%RCP system of nuclear power plants is one of the key equipment of PWR nuclear power plant. the main role of the RCP speed monitoring device is to monitor RCP speed. The key component of the RCP speed frequency current converter as a RCP speed monitoring equipment, belonging to the K2 class of identification category, need to complete the irradiation test. Based on the irradiation conditions on site and the user needs, test programs and test environments of irradiation tests were designed. Conclusion of the test showed that the test is feasible and effective, it proves the equipment in the installation site can meet the reliability requirements of 5 years work properly under the environment is not greater than the radiation dose rate 15mSv/h.

  19. Design of experiments (DoE) in pharmaceutical development.

    Science.gov (United States)

    N Politis, Stavros; Colombo, Paolo; Colombo, Gaia; M Rekkas, Dimitrios

    2017-02-23

    At the beginning of the twentieth century, Sir Ronald Fisher introduced the concept of applying statistical analysis during the planning stages of research rather than at the end of experimentation. When statistical thinking is applied from the design phase, it enables to build quality into the product, by adopting Deming's profound knowledge approach, comprising system thinking, variation understanding, theory of knowledge, and psychology. The pharmaceutical industry was late in adopting these paradigms, compared to other sectors. It heavily focused on blockbuster drugs, while formulation development was mainly performed by One Factor At a Time (OFAT) studies, rather than implementing Quality by Design (QbD) and modern engineering-based manufacturing methodologies. Among various mathematical modeling approaches, Design of Experiments (DoE) is extensively used for the implementation of QbD in both research and industrial settings. In QbD, product and process understanding is the key enabler of assuring quality in the final product. Knowledge is achieved by establishing models correlating the inputs with the outputs of the process. The mathematical relationships of the Critical Process Parameters (CPPs) and Material Attributes (CMAs) with the Critical Quality Attributes (CQAs) define the design space. Consequently, process understanding is well assured and rationally leads to a final product meeting the Quality Target Product Profile (QTPP). This review illustrates the principles of quality theory through the work of major contributors, the evolution of the QbD approach and the statistical toolset for its implementation. As such, DoE is presented in detail since it represents the first choice for rational pharmaceutical development.

  20. Delayed choice experiments, the arrow of time, and quantum measurement

    Science.gov (United States)

    Schulman, L. S.

    2011-11-01

    By a radical modification of statistical mechanics the measurement process of quantum mechanics can be described in terms of pure, unitary time evolution, with no wave function collapse or many-world ideas. The key notion is "special states," rare microscopic states of a complex system. Recovering the standard probabilities requires of this theory the appearance of Cauchy-distributed noise in some measurement processes. This article treats experimental situations where such noise might be detected and correlated with the need or absence of need for special states. Included in this possibility are "delayed choice" experiments, in which the correlation contravenes conventional ideas on causality. Background material on all topics is provided.

  1. Measurement of dileptons with the CBM experiment at FAIR

    Energy Technology Data Exchange (ETDEWEB)

    Höhne, C.

    2014-11-15

    The Compressed Baryonic Matter (CBM) experiment at the upcoming Facility for Antiproton and Ion Research (FAIR) will explore the phase diagram of nuclear matter at very high net-baryon densities and moderate temperatures in nucleus–nucleus collisions at beam energies up to 45A GeV. One of the key diagnostic probes is electromagnetic radiation. In order to minimize systematic errors of this challenging measurement, CBM aims at an investigation of dielectron and dimuon pairs in the full mass range from the photon point up to charmonium. The results of performance studies for dilepton measurements and the status of the detector developments are presented.

  2. A pilot experiment for mass measurement at CSRe

    Institute of Scientific and Technical Information of China (English)

    TU Xiao-Lin; XU Hu-Shan; XIA Jia-Wen; WANG Meng; MAO Rui-Shi; YUAN You-Jin; HU Zheng-Guo; LIU Yong; ZHANG Hong-Bin; ZANG Yong-Dong; ZHAO Tie-Cheng; ZHANG Xue-Ying; FU Fen; YANG Jian-Cheng; MAO Li-Jun; XIAO Chen; XIAO Guo-Qing; ZHAO Hong-Wei; ZHAN Wen-Long

    2009-01-01

    A pilot experiment of mass measurement was performed at CSRe with the method of isochronous mass spectrometry. The secondary fragments produced via RIBLL2 with the primary beam of 400 MeV/u 36Ar delivered by CSRm were injected into CSRe. The revolution periods of the stored ions, which depend on the mass-to-charge ratios of the stored ions, were measured with a time-of-flight detector system. The results show that the mass resolution around 8×10-6 for Δm/m is achieved.

  3. Design of High Precision Temperature Measurement System based on Labview

    Directory of Open Access Journals (Sweden)

    Weimin Zhu

    2015-06-01

    Full Text Available Using the LabVIEW software platform, a high precision temperature measuring device is designed based on the principle of the thermocouple. The system uses the STM32 MCU as the main control chip, using AD7076 analog digital converter. The converter has 8 channel, synchronous sampling, and bipolar input. Improving the precision of temperature measurement by cold end compensation, fitting and other measures. The test results show that, the device temperature measurement precision can reach ±0.1 °C, has the advantages of small size, high precision, and reliable performance, this high precision temperature measurement can be widely used in industrial production.

  4. Selected Measurements of Rare Decays at the LHCb Experiment

    CERN Document Server

    Pikies, Malgorzata

    2016-01-01

    Experimental results of rare decays B$^0$$\\to K*^0\\mu\\mu$, B$^0 \\to K*^0$ee, $\\Lambda_b\\to\\Lambda\\mu\\mu$ and B$^0_s$ governed by Flavour Changing Neutral Current transitions are discussed in this paper. The angular distributions and differential branching fractions measurements were performed using data corresponding to an integrated luminosity of 3:0 fb$^{-1}$ collected at the LHCb experiment.

  5. Reliability of Physician-Level Measures of Patient Experience in Primary Care.

    Science.gov (United States)

    Fenton, Joshua J; Jerant, Anthony; Kravitz, Richard L; Bertakis, Klea D; Tancredi, Daniel J; Magnan, Elizabeth M; Franks, Peter

    2017-09-12

    Patient experience measures are widely used to compare performance at the individual physician level. To assess the impact of unmeasured patient characteristics on visit-level patient experience measures and the sample sizes required to reliably measure patient experience at the primary care physician (PCP) level. Repeated cross-sectional design. Academic family medicine practice in California. One thousand one hundred forty-one adult patients attending 1319 visits with 56 PCPs (including 45 resident and 11 faculty physicians). Post-visit patient experience surveys including patient measures used for standard adjustment as recommend by the Consumer Assessment of Healthcare Providers and Systems (CAHPS) Consortium and additional patient characteristics used for expanded adjustment (including attitudes toward healthcare, global life satisfaction, patient personality, current symptom bother, and marital status). The amount of variance in patient experience explained doubled with expanded adjustment for patient characteristics compared with standard adjustment (R(2) = 20.0% vs. 9.6%, respectively). With expanded adjustment, the amount of variance attributable to the PCP dropped from 6.1% to 3.4% and the required sample size to achieve a reliability of 0.90 in the physician-level patient experience measure increased from 138 to 255 patients per physician. After ranking of the 56 PCPs by average patient experience, 8 were reclassified into or out of the top or bottom quartiles of average experience with expanded as compared to standard adjustment [14.3% (95% CI: 7.0-25.2%)]. Widely used methods for measuring PCP-level patient experience may not account sufficiently for influential patient characteristics. If methods were adapted to account for these characteristics, patient sample sizes for reliable between-physician comparisons may be too large for most practices to obtain.

  6. Measuring Customer Experience in Bancassurance: An Empirical Study

    Directory of Open Access Journals (Sweden)

    Mousumi Choudhury

    2016-06-01

    Full Text Available Purpose – This study attempts to investigate customer experience with respect to the bancassurance channel. Design/Methodology/Approach – The study is based on primary data collected using a structured questionnaire from customers buying life insurance policies from SBI Life through different branches of State Bank of India in the city of Guwahati in the state of Assam, India. Cronbach’s alpha was used to test the reliability of the questionnaire. Statistical tools, such as mean, standard deviation, and factor analysis were used to attain the objective of the study. Findings and implications – The study found that customers have favorable experiences when buying life insurance through the bancassurance channel. There are seven core factors that affect customer experience in bancassurance: ease of buying, whether maturity benefit is received, reliability of the channel, responsiveness of the channel, after-sale services, stock market-related information, and accuracy of the channel. Banks should devise a strategy to sustain favorable experiences of their customers, as this enables banks to retain their existing customers while also attracting new ones. Limitation – The study is restricted to customers buying life insurance policy from various branches of State Bank of India in Guwahati, India. Therefore, longitudinal and cross-sectional research is needed to generalize the findings. Originality – The study is first of its kind and hence original in nature.

  7. The MARTE VNIR Imaging Spectrometer Experiment: Design and Analysis

    CERN Document Server

    Brown, Adrian J; Dunagan, Stephen

    2014-01-01

    We report on the design, operation, and data analysis methods employed on the VNIR imaging spectrometer instrument that was part of the Mars Astrobiology Research and Technology Experiment (MARTE). The imaging spectrometer is a hyperspectral scanning pushbroom device sensitive to VNIR wavelengths from 400-1000 nm. During the MARTE project, the spectrometer was deployed to the Rio Tinto region of Spain. We analyzed subsets of 3 cores from Rio Tinto using a new band modeling technique. We found most of the MARTE drill cores to contain predominantly goethite, though spatially coherent areas of hematite were identified in Core 23. We also distinguished non Fe-bearing minerals that were subsequently analyzed by X-ray diffraction (XRD) and found to be primarily muscovite. We present drill core maps that include spectra of goethite, hematite, and non Fe-bearing minerals.

  8. A brief review of measurements of electroweak bosons at the LHCb experiment in LHC Run 1

    CERN Document Server

    INSPIRE-00340962

    2016-09-15

    The LHCb experiment is one of four major experiments at the LHC. Despite being designed for the study of beauty and charm particles, it has made important contributions in other areas, such as the production and decay of $W$ and $Z$ bosons. Such measurements can be used to study and constrain parton distribution functions, as well as to test perturbative quantum chromodynamics in hard scattering processes. The angular structure of $Z$ boson decays to leptons can also be studied and used to measure the weak mixing angle. The phase space probed by LHCb is particularly sensitive to this quantity, and the LHCb measurement using the dimuon final state is currently the most precise determination of $\\sin^2\\theta^\\text{lept.}_\\text{eff.}$ at the LHC. LHCb measurements made using data collected during the first period of LHC operations (LHC Run 1) are discussed in this review. The article also considers the potential impact of related future measurements.

  9. Mathematical models as aids for design and development of experiments: the case of transgenic mosquitoes.

    Science.gov (United States)

    Robert, Michael A; Legros, Mathieu; Facchinelli, Luca; Valerio, Laura; Ramsey, Janine M; Scott, Thomas W; Gould, Fred; Lloyd, Alun L

    2012-11-01

    We demonstrate the utility of models as aids in the design and development of experiments aimed at measuring the effects of proposed vector population control strategies. We describe the exploration of a stochastic, age-structured model that simulates field cage experiments that test the ability of a female-killing strain of the mosquito Aedes aegypti (L.) to suppress a wild-type population. Model output predicts that choices of release ratio and population size can impact mean extinction time and variability in extinction time among experiments. We find that unless fitness costs are >80% they will not be detectable in experiments with high release ratios. At lower release ratios, the predicted length of the experiment increases significantly for fitness costs >20%. Experiments with small populations may more accurately reflect field conditions, but extinction can occur even in the absence of a functional female-killing construct because of stochastic effects. We illustrate how the model can be used to explore experimental designs that aim to study the impact of density dependence and immigration; predictions indicate that cage population eradication may not always be obtainable in an operationally realistic time frame. We propose a method to predict the extinction time of a cage population based on the rate of population reduction with the goal of shortening the duration of the experiment. We discuss the model as a tool for exploring and assessing the utility of a wider range of scenarios than would be feasible to test experimentally because of financial and temporal restraints.

  10. PV-Diesel Hybrid SCADA Experiment Network Design

    Science.gov (United States)

    Kalu, Alex; Durand, S.; Emrich, Carol; Ventre, G.; Wilson, W.; Acosta, R.

    1999-01-01

    The essential features of an experimental network for renewable power system satellite based supervisory, control and data acquisition (SCADA) are communication links, controllers, diagnostic equipment and a hybrid power system. Required components for implementing the network consist of two satellite ground stations, to satellite modems, two 486 PCs, two telephone receivers, two telephone modems, two analog telephone lines, one digital telephone line, a hybrid-power system equipped with controller and a satellite spacecraft. In the technology verification experiment (TVE) conducted by Savannah State University and Florida Solar Energy Center, the renewable energy hybrid system is the Apex-1000 Mini-Hybrid which is equipped with NGC3188 for user interface and remote control and the NGC2010 for monitoring and basic control tasks. This power system is connected to a satellite modem via a smart interface, RS232. Commands are sent to the power system control unit through a control PC designed as PC1. PC1 is thus connected to a satellite model through RS232. A second PC, designated PC2, the diagnostic PC is connected to both satellite modems via separate analog telephone lines for checking modems'health. PC2 is also connected to PC1 via a telephone line. Due to the unavailability of a second ground station for the ACTS, one ground station is used to serve both the sending and receiving functions in this experiment. Signal is sent from the control PC to the Hybrid system at a frequency f(sub 1), different from f(sub 2), the signal from the hybrid system to the control PC. f(sub l) and f(sub 2) are sufficiently separated to avoid interference.

  11. METHODS FOR MEASURING CUSTOMER SATISFACTION IN THE DESIGN PROCESS

    Directory of Open Access Journals (Sweden)

    Mirko Đapic

    2007-09-01

    Full Text Available In the design process, the designer makes decisions under uncertainty, contradiction and ignorance conditions. Are these decisions correct and to what extent? How much do they influence customer's satisfaction? These are only some of the questions the designers face all time. These dilemmas appear more in early phases of the design process. The explicit objectives of this paper is improvement of design decision making process in such a way that in same time when designer made a decision he or she show result that decision on customer satisfaction. In order to solve above problems, the paper describes the method, which enables integrated use of the axiomatic approach to designing, and the Taguchi method of robust design. This approach implies the modelling of the development process as an evidence-reasoning network based on uncertain evidence described via belief functions of (Dempster - Shafer theory. The paper starts with base concept of belief functions and valuation based system or evidential reasoning system for representation and reasoning based on uncertainty. After that we introduce coefficient of relative decrease of uncertainty in design process and new graphical representation of system architecture - the evidence networks. On the end we presents a method for measuring customer satisfaction in the design process in uncertainty condition using evidence networks.

  12. Fast ignition integrated experiments and high-gain point design

    Energy Technology Data Exchange (ETDEWEB)

    Shiraga, H. [Osaka Univ., Osaka (Japan); Nagatomo, H. [Osaka Univ., Osaka (Japan); Theobald, W. [Univ. of Rochester, Rochester, NY (United States); Solodov, A. A. [Univ. of Rochester, Rochester, NY (United States); Tabak, M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2014-04-17

    Here, integrated fast ignition experiments were performed at ILE, Osaka, and LLE, Rochester, in which a nanosecond driver laser implodes a deuterated plastic shell in front of the tip of a hollow metal cone and an intense ultrashort-pulse laser is injected through the cone to heat the compressed plasma. Based on the initial successful results of fast electron heating of cone-in-shell targets, large-energy short-pulse laser beam lines were constructed and became operational: OMEGA-EP at Rochester and LFEX at Osaka. Neutron enhancement due to heating with a ~kJ short-pulse laser has been demonstrated in the integrated experiments at Osaka and Rochester. The neutron yields are being analyzed by comparing the experimental results with simulations. Details of the fast electron beam transport and the electron energy deposition in the imploded fuel plasma are complicated and further studies are imperative. The hydrodynamics of the implosion was studied including the interaction of the imploded core plasma with the cone tip. Theory and simulation studies are presented on the hydrodynamics of a high-gain target for a fast ignition point design.

  13. Detail design of the beam source for the SPIDER experiment

    Energy Technology Data Exchange (ETDEWEB)

    Marcuzzi, D. [Consorzio RFX, Euratom-ENEA Association, C.so Stati Uniti 4, I-35127 Padova (Italy); Agostinetti, P., E-mail: piero.agostinetti@igi.cnr.i [Consorzio RFX, Euratom-ENEA Association, C.so Stati Uniti 4, I-35127 Padova (Italy); Dalla Palma, M.; Degli Agostini, F.; Pavei, M.; Rizzolo, A.; Tollin, M.; Trevisan, L. [Consorzio RFX, Euratom-ENEA Association, C.so Stati Uniti 4, I-35127 Padova (Italy)

    2010-12-15

    The ITER Neutral Beam Test Facility (PRIMA-Padova Research on Injector Megavolt Accelerated) is planned to be built at Consorzio RFX (Padova, Italy). PRIMA includes two experimental devices: a full size plasma source with low voltage extraction called SPIDER (Source for Production of Ion of Deuterium Extracted from RF plasma) and a full size neutral beam injector at full beam power called MITICA (Megavolt ITER Injector Concept Advancement). SPIDER is the first experimental device to be built and operated, aiming at testing the extraction of a negative ion beam (made of H{sup -} and in a later stage D{sup -} ions) from an ITER size ion source. The main requirements of this experiment are a H{sup -}/D{sup -} current of approximately 70 A/50 A and an energy of 100 keV. This paper presents an overview of the SPIDER beam source design, with a particular focus on the main design choices, aiming at reaching the best compromise between physics, optics, thermo-mechanical, cooling, assembly and electrical requirements.

  14. The application of statistically designed experiments to resistance spot welding

    Science.gov (United States)

    Hafley, Robert A.; Hales, Stephen J.

    1991-01-01

    State-of-the-art Resistance Spot Welding (RSW) equipment has the potential to permit realtime monitoring of operations through advances in computerized process control. In order to realize adaptive feedback capabilities, it is necessary to establish correlations among process variables, welder outputs, and weldment properties. The initial step toward achieving this goal must involve assessment of the effect of specific process inputs and the interactions among these variables on spot weld characteristics. This investigation evaluated these effects through the application of a statistically designed experiment to the RSW process. A half-factorial, Taguchi L sub 16 design was used to understand and refine a RSW schedule developed for welding dissimilar aluminum-lithium alloys of different thickness. The baseline schedule had been established previously by traditional trial and error methods based on engineering judgment and one-factor-at-a-time studies. A hierarchy of inputs with respect to each other was established, and the significance of these inputs with respect to experimental noise was determined. Useful insight was gained into the effect of interactions among process variables, particularly with respect to weldment defects. The effects of equipment related changes associated with disassembly and recalibration were also identified. In spite of an apparent decrease in equipment performance, a significant improvement in the maximum strength for defect-free welds compared to the baseline schedule was achieved.

  15. OPTIMUM DESIGN OF EXPERIMENTS FOR ACCELERATED RELIABILITY TESTING

    Directory of Open Access Journals (Sweden)

    Sebastian Marian ZAHARIA

    2014-05-01

    Full Text Available In this paper is presented a case study that demonstrates how design to experiments (DOE information can be used to design better accelerated reliability tests. In the case study described in this paper, will be done a comparison and optimization between main accelerated reliability test plans (3 Level Best Standard Plan, 3 Level Best Compromise Plan, 3 Level Best Equal Expected Number Failing Plan, 3 Level 4:2:1 Allocation Plan. Before starting an accelerated reliability test, it is advisable to have a plan that helps in accurately estimating reliability at operating conditions while minimizing test time and costs. A test plan should be used to decide on the appropriate stress levels that should be used (for each stress type and the amount of the test units that need to be allocated to the different stress levels (for each combination of the different stress types' levels. For the case study it used ALTA 7 software what provides a complete analysis for data from accelerated reliability tests

  16. Thermocouple design for measuring temperatures of small insects.

    Science.gov (United States)

    Hanson, A A; Venette, R C

    2013-01-01

    Contact thermocouples often are used to measure surface body temperature changes of insects during cold exposure. However, small temperature changes of minute insects can be difficult to detect, particularly during the measurement of supercooling points. We developed two thermocouple designs, which use 0.51 mm diameter or 0.127 mm diameter copper-constantan wires, to improve our ability to resolve insect exotherms. We tested the designs with adults from three parasitoid species: Tetrastichus planipennisi, Spathius agrili, and S. floridanus. These species are thermocouples than thick-gauge thermocouples for the smallest species tested, T. planipennisi. This difference was not apparent for larger species S. agrili and S. floridanus. Thermocouple design did not affect the mean supercooling point for any of the species. The cradle thermocouple design developed with the fine gauge wire was reusable and allowed for easy insect recovery after cold exposure.

  17. The Laboratory Course Assessment Survey: A Tool to Measure Three Dimensions of Research-Course Design

    Science.gov (United States)

    Corwin, Lisa A.; Runyon, Christopher; Robinson, Aspen; Dolan, Erin L.

    2015-01-01

    Course-based undergraduate research experiences (CUREs) are increasingly being offered as scalable ways to involve undergraduates in research. Yet few if any design features that make CUREs effective have been identified. We developed a 17-item survey instrument, the Laboratory Course Assessment Survey (LCAS), that measures students' perceptions…

  18. Design and Study of Data Acquisition System for Pulsed γ Dose Measurement Device

    Institute of Scientific and Technical Information of China (English)

    DOU; Yu-ling; YANG; Shao-hua; ZHANG; Guo-guang

    2012-01-01

    <正>A data acquisition system for online pulsed gamma dose measurement device was designed and developed (Fig. 1), and its performance was tested. The results show that the data acquisition system in both the continued and pulsed input, output electric charges and input energy have a good linear relationship. Experiments were done respectively on the XRS-3 pulsed source and re-frequency

  19. The design and implementation of the AVNG measurement system

    Energy Technology Data Exchange (ETDEWEB)

    Macarthur, Duncan W [Los Alamos National Laboratory; Thron, Jonathan [Los Alamos National Laboratory; Razinkov, Sergey [RFNC-VNIIEF; Livke, Alexander [RFNC-VNIIEF; Kondratov, Sergey [RFNC-VNIIEF

    2010-01-01

    An attribute measurement system (AMS) measures a number of unclassified attributes of potentially classified material. By displaying these unclassified results only as red or green lights, the AMS protects potentially classified information while still generating confidence in the measurement result. The AVNG that we describe is an AMS built by RFNC-VNIIEF in Sarov, Russia. The AVNG detects neutron and gamma radiation signatures and displays the three unclassified attributes of 'plutonium presence,' 'plutonium mass >2 kg,' and 'plutonium isotopic ratio ({sup 240}Pu to {sup 239}Pu) < 0.1.' In this presentation, we will describe the design of the AVNG neutron and gamma detector subsystems, as well as the design of the entire AMS incorporating these detectors. We will also describe the construction of the AVNG and the final design that was demonstrated in June 2009.

  20. Optimal Design for Informative Protocols in Xenograft Tumor Growth Inhibition Experiments in Mice.

    Science.gov (United States)

    Lestini, Giulia; Mentré, France; Magni, Paolo

    2016-09-01

    Tumor growth inhibition (TGI) models are increasingly used during preclinical drug development in oncology for the in vivo evaluation of antitumor effect. Tumor sizes are measured in xenografted mice, often only during and shortly after treatment, thus preventing correct identification of some TGI model parameters. Our aims were (i) to evaluate the importance of including measurements during tumor regrowth and (ii) to investigate the proportions of mice included in each arm. For these purposes, optimal design theory based on the Fisher information matrix implemented in PFIM4.0 was applied. Published xenograft experiments, involving different drugs, schedules, and cell lines, were used to help optimize experimental settings and parameters using the Simeoni TGI model. For each experiment, a two-arm design, i.e., control versus treatment, was optimized with or without the constraint of not sampling during tumor regrowth, i.e., "short" and "long" studies, respectively. In long studies, measurements could be taken up to 6 g of tumor weight, whereas in short studies the experiment was stopped 3 days after the end of treatment. Predicted relative standard errors were smaller in long studies than in corresponding short studies. Some optimal measurement times were located in the regrowth phase, highlighting the importance of continuing the experiment after the end of treatment. In the four-arm designs, the results showed that the proportions of control and treated mice can differ. To conclude, making measurements during tumor regrowth should become a general rule for informative preclinical studies in oncology, especially when a delayed drug effect is suspected.

  1. Experiment Design and First Season Observations with the Degree Angular Scale Interferometer

    CERN Document Server

    Leitch, E M; Halverson, N W; Kovács, J; Davidson, G; LaRoque, S J; Schartman, E; Yamasaki, J; Carlstrom, J E; Holzapfel, W L; Dragovan, M; Cartwright, J K; Mason, B S; Padin, S; Pearson, T J; Shepherd, M C; Readhead, A C S

    2002-01-01

    We describe the instrumentation, experiment design and data reduction for the first season of observations with the Degree Angular Scale Interferometer (DASI), a compact microwave interferometer designed to measure anisotropy in the Cosmic Microwave Background (CMB) on degree and sub-degree scales (l=100--900). The telescope was deployed at the Amundsen-Scott South Pole research station during the 1999--2000 austral summer and conducted observations of the CMB throughout the following austral winter. In its first season of observations, DASI has mapped CMB fluctuations in 32 fields, each 3.4 deg across, with high sensitivity.

  2. Interim Service ISDN Satellite (ISIS) hardware experiment development for advanced ISDN satellite designs and experiments

    Science.gov (United States)

    Pepin, Gerard R.

    1992-01-01

    The Interim Service Integrated Service Digital Network (ISDN) Satellite (ISIS) Hardware Experiment Development for Advanced Satellite Designs describes the development of the ISDN Satellite Terminal Adapter (ISTA) capable of translating ISDN protocol traffic into Time Division Multiple Access (TDMA) signals for use by a communications satellite. The ISTA connects the Type 1 Network Termination (NT1) via the U-interface on the line termination side of the CPE to the RS-499 interface for satellite uplink. The same ISTA converts in the opposite direction the RS-499 to U-interface data with a simple switch setting.

  3. Design of Experiments: Useful Orthogonal Arrays for Number of Experiments from 4 to 16

    Directory of Open Access Journals (Sweden)

    Lorentz Jäntschi

    2007-12-01

    Full Text Available A methodology for the design of an experiment is proposed in order to find asmany schemes as possible with the maximum number of factors with different levels for thesmallest number of experimental runs. An algorithm was developed and homemadesoftware was implemented. The abilities in generation of the largest groups of orthogonalarrays were analyzed for experimental runs of 4, 6, 8, 9, 10, 12, 14, 15, and 16. The resultsshow that the proposed method permits the construction of the largest groups of orthogonalarrays with the maximum number of factors.

  4. Measuring and improving the patient experience in radiology.

    Science.gov (United States)

    Brook, Olga R; Siewert, Bettina; Weinstein, Jeffrey; Ahmed, Muneeb; Kruskal, Jonathan

    2017-04-01

    Recently enacted healthcare legislation and the associated payment reforms have shifted the focus from traditional fee for service models to adding measurable and appreciable value to the patient experience. The value equation links quality to costs, and quality metrics are now directly related to patient outcomes and the patient experience. To participate effectively in this new paradigm requires not only that we provide excellent, timely and appropriate patient-centric care at all times, but that we are able to measure and manage the feedback we obtain from our patients. Of course, in order to provide value-added care, we must know not only who our customers are, but what they value. In this review, we explore factors that impact patient perception and experience with imaging services. We further illustrate different ways that patient feedback can be elicited and provide pros and cons of each approach. Collecting appropriate data is insufficient by itself; such data must be carefully analyzed, and opportunities for improvement must be identified, introduced, and monitored ahead of future surveys.

  5. Design of a Flexible Hardware Interface for Multiple Remote Electronic practical Experiments of Virtual Laboratory

    Directory of Open Access Journals (Sweden)

    Farah Said

    2012-03-01

    Full Text Available The objective of this work is to present a new design of a Flexible Hardware Interface (FHI based on PID control techniques to use in a virtual laboratory. This flexible hardware interface allows the easy implementation of different and multiple remote electronic practical experiments for undergraduate engineering classes. This interface can be viewed as opened hardware architecture to easily develop simple or complex remote experiments in the electronic domain. The philosophy of the use of this interface can also be expanded to many other domains as optic experiments for instance. It is also demonstrated that software can be developed to enable remote measurements of electronic circuits or systems using only Web site Interface. Using standard browsers (such as Internet explorer, Firefox, Chrome or Safari, different students can have a remote access to different practical experiments at a time.

  6. 2012 Next Generation Experiments to Measure the Neutron Lifetime Workshop

    CERN Document Server

    2014-01-01

    There is a great interest in improving the limits on neutron lifetime to the level of a precision of 0.1 s. The neutron lifetime is both an important fundamental quantity as well as a parameter influencing important processes such as nucleosynthesis (Helium production in the early universe) and the rate of energy production in the Sun. Aiming to create a roadmap of R&D for a next generation neutron lifetime experiment that can be endorsed by the North American neutron community, the focus of the workshop was on experiments using traps that utilize ultracold neutrons and confinement by a combination of magnetic and/or gravitational interaction in order to avoid systematic uncertainties introduced by neutron interactions with material walls. The papers in this volume summarize the limitations of present experiments, the discussion of new experiments in planning stage, and the discussion of systematic effects that must be addressed to achieve a lifetime measurement at an accuracy of 0.1 second.

  7. Experience of Visual Perception in the Design Education

    OpenAIRE

    Kornienko, Mikhail; Kukhta, Maria Sergeevna; Fofanov, Oleg Borisovich; Kukhta, Evgeniy

    2015-01-01

    Relevance of the paper is due to theoretical and practical necessity to study the peculiarities of design education. Modern designer shall, theoretically and methodologically, master the system of design engineering based on the laws affecting the form of product, methods of styling design and design quality analysis, basics of materials science and industrial design engineering. Design of industrial products shall draw upon historical, cultural, logistical, aesthetic and artistic foundations...

  8. Passive Microwave Measurements of Salinity: The Gulf Stream Experiment

    Science.gov (United States)

    LeVine, D. M.; Koblinsky, C.; Haken, M.; Howden, S.; Bingham, F.; Hildebrand, Peter H. (Technical Monitor)

    2001-01-01

    Passive microwave sensors at L-band (1.4 GHz) operating from aircraft have demonstrated that salinity can be measured with sufficient accuracy (I psu) to be scientifically meaningful in coastal waters. However, measuring salinity in the open ocean presents unresolved issues largely because of the much greater accuracy (approximately 0.2 psu) required of global maps to be scientifically viable. The development of a satellite microwave instrument to make global measurements of SSS (Sea Surface Salinity) is the focus of a joint JPL/GSFC/NASA ocean research program called Aquarius. In the summer of 1999 a series of measurements called, The Gulf Stream Experiment, were conducted as part of research at the Goddard Space Flight Center to test the potential for passive microwave remote sensing of salinity in the open ocean. The measurements consisted of airborne microwave instruments together with ships and drifters for surface truth. The study area was a 200 km by 100 km rectangle about 250 km east of Delaware Bay between the continental shelf waters and north wall of the Gulf Stream. The primary passive instruments were the ESTAR radiometer (L-band, H-pol) and the SLFMR radiometer (L-band, V-pol). In addition, the instruments on the aircraft included a C-band radiometer (ACMR), an ocean wave scatterometer (ROWS) and an infrared radiometer (for surface temperature). These instruments were mounted on the NASA P-3 Orion aircraft. Sea surface measurements consisted of thermosalinograph data provided by the R/V Cape Henlopen and the MN Oleander, and data from salinity and temperature sensors on three surface drifters deployed from the R/V Cape Henlopen. The primary experiment period was August 26-September 2, 1999. During this period the salinity field within the study area consisted of a gradient on the order of 2-3 psu in the vicinity of the shelf break and a warm core ring with a gradient of 1-2 psu. Detailed maps were made with the airborne sensors on August 28 and 29 and

  9. The Luminosity Measurement for the DZERO Experiment at Fermilab

    Energy Technology Data Exchange (ETDEWEB)

    Snow, Gregory R. [Univ. of Nebraska, Lincoln, NE (United States)

    2016-08-01

    Primary project objective: The addition of University of Nebraska-Lincoln (UNL) human resources supported by this grant helped ensure that Fermilab’s DZERO experiment had a reliable luminosity measurement through the end of Run II data taking and an easily-accessible repository of luminosity information for all collaborators performing physics analyses through the publication of its final physics results. Secondary project objective: The collaboration between the UNL Instrument Shop and Fermilab’s Scintillation Detector Development Center enhanced the University of Nebraska’s future role as a particle detector R&D and production facility for future high energy physics experiments. Overall project objective: This targeted project enhanced the University of Nebraska’s presence in both frontier high energy physics research in DZERO and particle detector development, and it thereby served the goals of the DOE Office of Science and the Experimental Program to Stimulate Competitive Research (EPSCoR) for the state of Nebraska.

  10. Measurement of {eta}{sub +} {sub -} with the CPLEAR experiment

    Energy Technology Data Exchange (ETDEWEB)

    Polivka, G. [Basel Univ. (Switzerland); Adler, R. [Basel Univ. (Switzerland); Alhalel, T.; Angelopoulos, A.; Apostolakis, A.; Aslanides, E.; Backenstoss, G.; Bargassa, P.; Bee, C.P.; Behnke, O.; Benelli, A.; Bertin, V.; Blanc, F.; Bloch, P.; Carlson, P.; Carroll, M.; Carvalho, J.; Cawley, E.; Charalambous, S.; Chardin, G.; Chertok, M.B.; Cody, A.; Danielsson, M.; Dejardin, M.; Derre, J.; Ealet, A.; Eckart, B.; Eleftheriadis, C.; Evangelou, I.; Faravel, L.; Fassnacht, P.; Felder, C.; Ferreira-Marques, R.; Fetscher, W.; Fidecaro, M.; Filipcic, A.; Francis, D.; Fry, J.; Gabathuler, E.; Gamet, R.; Garreta, D.; Gerber, H.-J.; Go, A.; Guyot, C.; Haselden, A.; Hayman, P.J.; Henry-Couannier, F.; Hollander, R.W.; Hubert, E.; Jon-And, K.; Kettle, P.-R.; Kochowski, C.; Kokkas, P.; Kreuger, R.; Le Gac, R.; Leimgruber, F.; Liolios, A.; Machado, E.; Mandic, I.; Manthos, N.; Marel, G.; Mikuz, M.; Miller, J.; Montanet, F.; Nakada, T.; Pagels, B.; Papadopoulos, I.; Pavlopoulos, P.; Pinto da Cunha, J.; Policarpo, A.; Rickenbach, R.; Roberts, B.L.; Ruf, T.; Sakeliou, L.; Sanders, P.; Santoni, C.; Schaefer, M.; Schaller, L.A.; Schietinger, T.; Schopper, A.; Schune, P.; Soares, A.; Tauscher, L.; Thibault, C.; Touchard, F.; Touramanis, C.; Triantis, F.; Van Beveren, E.; Van Eijk, C.W.E.; Vlachos, S.; Weber, P.; Wigger, O.; Wolter, M.; Yeche, C.; Zavrtanik, D.; Zimmerman, D.; CPLEAR Collaboration

    1997-06-01

    The CPLEAR experiment at CERN uses time-dependent decay-rate asymmetries between K{sup 0} and K{sup 0} to measure {eta}{sub +-}. The analysis and the systematic errors are discussed. The preliminary results from all our data are {phi}{sub +-}=43.5 {+-}0.5 {sub stat}{+-}0.5{sub syst}{+-}0.4{sub {Delta}m} and vertical stroke {eta}{sub +-}vertical stroke =(2.316{+-}0.025{sub stat}{+-}0.028{sub syst}{+-}0.009{sub {tau}{sub S}}) x 10{sup -3}. The dominant part in the systematic error of {phi}{sub +-} is due to the regeneration correction. A dedicated experiment was performed to reduce this error considerably. (orig.).

  11. An Experience of Thermowell Design in RCP Test Facility

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Y. S.; Kim, B. D.; Youn, Y. J.; Jeon, W. J.; Kim, S.; Bae, B. U.; Cho, Y. J.; Choi, H. S.; Park, J. K; Cho, S. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-10-15

    Flow rates for the test should vary in the range of 90% to 130% of rated flowrate under prototypic operational conditions, as shown in Table 1. Generally for the flow control, a combination of a control valve and an orifice was used in previous RCP test facilities. From the commissioning startup of the RCP test facility, it was found the combination of valve and orifice induced quite a large vibration for the RCP. As a solution to minimize the vibration and to facilitate the flowrate control, one of KAERI's staff suggested a variable restriction orifice (VRO), which controls most of the required flowrates except highest flowrates, as shown in Fig. 2. For the highest flowrates, e.g., around run-out flowrate (130%), control valves in bypass lines were also used to achieve required flowrates. From a performance test, it was found the VRO is very effective measures to control flowrates in the RCP test facility. During the commissioning startup operation, one of thermowells located at the upstream of the RCP was cracked due to high speed coolant velocity, which was - fortunately - found under a leakage test before running the RCP test loop. The cracked thermowell, whose tapered-shank was detached from the weld collar after uninstalling, is shown in Fig. 3. As can be seen the figure, most of the cross-section at the root of the thermowell shank was cracked. In this paper, an investigation of the integrity of thermowells in the RCP test facility was performed according to the current code and overall aspects on the thermowell designs were also discussed. An RCP test facility has been constructed in KAERI. During the commissioning startup operation, one of thermowells was cracked due to high speed coolant velocity. To complete the startup operation, a modified design of thermowells was proposed and all the original thermowells were replaced by the modified ones. From evaluation of the original and modified designs of thermowells according to the recent PTC code, the

  12. Having One's Cake and Eating It, Too: Combining True Experiments with Regression Discontinuity Designs

    Science.gov (United States)

    Mandell, Marvin B.

    2008-01-01

    Both true experiments and regression discontinuity (RD) designs produce unbiased estimates of effects. However, true experiments are, of course, often criticized on equity grounds, whereas RD designs entail sacrifices in terms of statistical precision. In this article, a hybrid of true experiments and RD designs is considered. This hybrid entails…

  13. Electromagnetic anomaly before earthquakes measured by electromagnetic experiments

    Institute of Scientific and Technical Information of China (English)

    Guoze Zhao; Yan Zhan; Lifeng Wang; Jijun Wang; Ji Tang; Qibin Xiao; Xiaobin Chen

    2009-01-01

    Three experiments are carried out for earthquake monitoring using electromagnetic (EM) methods in recent years. Some earthquakes occurred in chance of the measurement time period for each experiment and the anomalies were recorded before the shocks. The observation at a site 20 km away from the epicenter of Zhangbei Ms6.2 earthquake in 1998 shows that the apparent resistivity decreases in the strike direction before and/or during the earthquake and the resistivity increases in the de-cline direction. This anomalous variation in apparent resistivity accounts for about 20%. The apparent resistivities at a site in the epicentrai area decrease in the strike and decline directions before and/or during the earthquake and increase after shocks. The experiments using artificial electromagnetic signals with super low frequency carried out in 1999 show that the resolution and stability of electric and magnetic spectra are improved. The spectra of electric and magnetic fields and apparent resistivity at the Baodi station began to anomalously change two days before the Qian'an earthquake with 120 km distant to the station. The anomalous variation of electric and magnetic spectra is about twice as great as normal variation and the apparent resistivity changes by about 20%. The measurements in active seismic area of Ytmnan province in the year 2005 indicate that the electric and magnetic spectra anomalously change by one order before the Taoyuan earthquake about 100 km away from the observa-tories. But the measurements at the sites in Beijing area 2 000 km away from the epicenter do not show any anomaly.

  14. Design of shape memory alloy pipe couplers: modeling and experiments

    Science.gov (United States)

    Tabesh, Majid; Atli, Kadri C.; Rohmer, John; Franco, Brian E.; Karaman, Ibrahim; Boyd, James G.; Lagoudas, Dimitris C.

    2012-04-01

    Shape memory alloy (SMA) pipe couplers use the shape memory effect to apply a contact pressure onto the surface of the pipes to be coupled. In the current research, a SMA pipe coupler is designed, fabricated and tested. The thermally induced contact pressure depends on several factors such as the dimensions and properties of the coupler-pipe system. Two alloy systems are considered: commercially-available NiTiNb couplers and in-house developed NiTi couplers. The coupling pressure is measured using strain gages mounted on the internal surface of an elastic ring. An axisymmetric finite element model including SMA constitutive equations is also developed, and the finite element results are compared with the experimental results.

  15. Design parameters for measurements of local catalytic activity on surfaces

    DEFF Research Database (Denmark)

    Johansson, Martin; Johannessen, Tue; Jørgensen, Jan Hoffmann;

    2006-01-01

    Computational fluid dynamics in combination with experiments is used to characterize a gas sampling device for measurements of the local catalytic activity on surfaces. The device basically consists of a quartz capillary mounted concentrically inside an aluminum tube. Reactant gas is blown toward...

  16. Laser-Shock Experiments: Calorimetry Measurements to TPa Pressures

    Science.gov (United States)

    Jeanloz, R.

    2012-12-01

    Laser-driven shock experiments are more like calorimetry measurements, characterized by determinations of Hugoniot temperature (TH) as a function of shock velocity (US), rather than the equation-of-state measurements afforded by mechanical-impact experiments. This is because particle velocity (up) is often not accessible to direct measurement in laser-shock experiments, so must be inferred with reference to a material having a well-determined, independently calibrated Hugoniot equation of state (up is obtained from the impact velocity in traditional shock experiments, and the combination of US and up yields the pressure-density equation of state for the sample). Application of a Mie-Grüneisen model shows that the isochoric specific heat for a given phase is: CV = (US - c0)2 {s2US (dTH/dUS) + γ0 c0 s (TH/US)}-1 with US = c0 + s up, and γ0 is the zero-pressure Grüneisen parameter (γ/V = constant is assumed here). This result is a generalization to TH-US variables of the Walsh and Christian (1955) formula for the temperature rise along the Hugoniot of a given phase (identified here with a US - up relation that is locally linear); it can be analytically integrated to give TH(US) in terms of an average value of CV, if no phase transition takes place. Analysis of the TH-US slopes obtained from laser-shock measurements on MgO yields specific-heat values ranging from 1.02 (± 0.05) kJ/kg/K at 320-345 GPa and TH = 7700-9000 K to 1.50 (± 0.05) kJ/kg/K at 350-380 GPa and TH = 8700-9500 K. A fit to the absolute values of TH(US) in this pressure-temperature range gives CV = 1.26 (± 0.10) kJ/kg/K, in good accord with the Dulong-Petit value CV = 1.24 kJ/kg/K.

  17. LHC optics and elastic scattering measured by the TOTEM experiment

    CERN Document Server

    Nemes, Frigyes

    2016-01-01

    The TOTEM experiment at the LHC has measured proton-proton elastic scattering in dedicated runs at $\\sqrt{s}=7$ and 8 TeV centre-of-mass LHC energies. The proton-proton total cross-section $\\sigma_{\\rm tot}$ has been derived for both energies using a luminosity independent method. TOTEM has excluded a purely exponential differential cross-section for elastic proton-proton scattering with significance greater than 7$\\sigma$ in the $|t|$ range from 0.027 to 0.2 GeV$^{2}$ at $\\sqrt{s}=8$ TeV.

  18. Conceptual Issues in Quantifying Unusualness and Conceiving Stochastic Experiments: Insights from Students' Experiences in Designing Sampling Simulations

    Science.gov (United States)

    Saldanha, Luis

    2016-01-01

    This article reports on a classroom teaching experiment that engaged a group of high school students in designing sampling simulations within a computer microworld. The simulation-design activities aimed to foster students' abilities to conceive of contextual situations as stochastic experiments, and to engage them with the logic of hypothesis…

  19. Efficient Optimization of Stimuli for Model-Based Design of Experiments to Resolve Dynamical Uncertainty.

    Science.gov (United States)

    Mdluli, Thembi; Buzzard, Gregery T; Rundell, Ann E

    2015-09-01

    This model-based design of experiments (MBDOE) method determines the input magnitudes of an experimental stimuli to apply and the associated measurements that should be taken to optimally constrain the uncertain dynamics of a biological system under study. The ideal global solution for this experiment design problem is generally computationally intractable because of parametric uncertainties in the mathematical model of the biological system. Others have addressed this issue by limiting the solution to a local estimate of the model parameters. Here we present an approach that is independent of the local parameter constraint. This approach is made computationally efficient and tractable by the use of: (1) sparse grid interpolation that approximates the biological system dynamics, (2) representative parameters that uniformly represent the data-consistent dynamical space, and (3) probability weights of the represented experimentally distinguishable dynamics. Our approach identifies data-consistent representative parameters using sparse grid interpolants, constructs the optimal input sequence from a greedy search, and defines the associated optimal measurements using a scenario tree. We explore the optimality of this MBDOE algorithm using a 3-dimensional Hes1 model and a 19-dimensional T-cell receptor model. The 19-dimensional T-cell model also demonstrates the MBDOE algorithm's scalability to higher dimensions. In both cases, the dynamical uncertainty region that bounds the trajectories of the target system states were reduced by as much as 86% and 99% respectively after completing the designed experiments in silico. Our results suggest that for resolving dynamical uncertainty, the ability to design an input sequence paired with its associated measurements is particularly important when limited by the number of measurements.

  20. Conceptual design of initial opacity experiments on the national ignition facility

    Science.gov (United States)

    Heeter, R. F.; Bailey, J. E.; Craxton, R. S.; Devolder, B. G.; Dodd, E. S.; Garcia, E. M.; Huffman, E. J.; Iglesias, C. A.; King, J. A.; Kline, J. L.; Liedahl, D. A.; McKenty, P. W.; Opachich, Y. P.; Rochau, G. A.; Ross, P. W.; Schneider, M. B.; Sherrill, M. E.; Wilson, B. G.; Zhang, R.; Perry, T. S.

    2017-02-01

    Accurate models of X-ray absorption and re-emission in partly stripped ions are necessary to calculate the structure of stars, the performance of hohlraums for inertial confinement fusion and many other systems in high-energy-density plasma physics. Despite theoretical progress, a persistent discrepancy exists with recent experiments at the Sandia Z facility studying iron in conditions characteristic of the solar radiative-convective transition region. The increased iron opacity measured at Z could help resolve a longstanding issue with the standard solar model, but requires a radical departure for opacity theory. To replicate the Z measurements, an opacity experiment has been designed for the National Facility (NIF). The design uses established techniques scaled to NIF. A laser-heated hohlraum will produce X-ray-heated uniform iron plasmas in local thermodynamic equilibrium (LTE) at temperatures eV and electron densities 21~\\text{cm}-3$ . The iron will be probed using continuum X-rays emitted in a ps, diameter source from a 2 mm diameter polystyrene (CH) capsule implosion. In this design, of the NIF beams deliver 500 kJ to the mm diameter hohlraum, and the remaining directly drive the CH capsule with 200 kJ. Calculations indicate this capsule backlighter should outshine the iron sample, delivering a point-projection transmission opacity measurement to a time-integrated X-ray spectrometer viewing down the hohlraum axis. Preliminary experiments to develop the backlighter and hohlraum are underway, informing simulated measurements to guide the final design.

  1. Lifetime measurements of beauty hadrons at the LHCb experiment

    CERN Document Server

    AUTHOR|(CDS)2078664

    This thesis presents several lifetime measurements of $b$-flavoured hadrons at the LHCb experiment. They represent an important test of the theoretical approach to $b$-hadron observables known as Heavy Quark Expansion (HQE). This analysis uses data corresponding to an integrated luminosity of 1 fb $^{-1}$ collected in proton-proton collisions at a centre-of-mass energy of $\\sqrt{s} =$ 7 $\\text {TeV}$. For the decays $B^+ \\rightarrow J/\\psi K^+$, $B^0 \\rightarrow J/\\psi K^{*0}$, $B^0 \\rightarrow J/\\psi K^0_S$, $\\Lambda^0_b \\rightarrow J/\\psi \\Lambda$ and $B^0_s \\rightarrow J/\\psi \\phi$, the lifetimes are measured to be \\begin{eqnarray}\

  2. Representing Targets of Measurement within Evidence-Centered Design

    Science.gov (United States)

    Ewing, Maureen; Packman, Sheryl; Hamen, Cynthia; Thurber, Allison Clark

    2010-01-01

    In the last few years, the Advanced Placement (AP) Program[R] has used evidence-centered assessment design (ECD) to articulate the knowledge, skills, and abilities to be taught in the course and measured on the summative exam for four science courses, three history courses, and six world language courses; its application to calculus and English…

  3. Determination of design axle loads for bridges from measurements

    NARCIS (Netherlands)

    Steenbergen, R.D.J.M.; Morales Napoles, O.

    2010-01-01

    Recently, the new Eurocode 1 was introduced dealing with traffic load on bridges. In order to establish the National Annex for the design traffic load, measurements of the traffic load were carried out in several highways in The Netherlands using the Weigh In Motion system. The goal was to assure

  4. Determination of design axle loads for bridges from measurements

    NARCIS (Netherlands)

    Steenbergen, R.D.J.M.; Morales Napoles, O.

    2010-01-01

    Recently, the new Eurocode 1 was introduced dealing with traffic load on bridges. In order to establish the National Annex for the design traffic load, measurements of the traffic load were carried out in several highways in The Netherlands using the Weigh In Motion system. The goal was to assure th

  5. Design and Measurement of Metallic Post-Wall Waveguide Components

    NARCIS (Netherlands)

    Coenen, T.J.; Bekers, D.J.; Tauritz, J.L.; Vliet, F.E. van

    2009-01-01

    Abstract—In this paper we discuss the design and measurement of a set of metallic post-wall waveguide components for antenna feed structures. The components are manufactured on a single layer printed circuit board and excited by a grounded coplanar waveguide. For a straight transmission line, a 90°

  6. Anthropometric measurements for ergonomic design of students’ furniture in India

    Directory of Open Access Journals (Sweden)

    Ismail Wilson Taifa

    2017-02-01

    Full Text Available This paper presents anthropometric measurements regarding engineering students in India. Health survey (ergonomic assessment was carried out to know the health status of all students who have been using poorly designed furniture. The data were measured with the help of various tools. After data collection and analysis, authors came up with exhaustive dimensions for designing adjustable classrooms furniture. Dimensions recommended include; bench surface height, bench depth and width, back rest width and height, backrest angle, desk height, desk depth, width, and desk angle. Therefore, an implementation of these data will help to create comfortability, safety, well-being, suitability, reduce Musculoskeletal disorders, and improve performance of students in terms of attentiveness. Also, it is highly recommended to consider requirements from students in designing classrooms furniture and conduct seminar or workshop to educate students regarding the negative impact towards adapting poor posture in the long usage of classrooms furniture.

  7. Designing Effective Field Experiences for Nontraditional Preservice Special Educators.

    Science.gov (United States)

    Rosenberg, Michael S.; Jackson, Lewis; Yeh, Chyong-Hwa

    1996-01-01

    Five alternatives to traditional field experiences in special education are described and contrasted, including: infusion of experiences within content courses; traditional experiences offered during the summer session; working practica; roving practica; and specialized field-experiences. It is argued that these alternatives can provide…

  8. Apparatus designed for very accurate measurement of the optical reflection.

    Science.gov (United States)

    Piombini, Hervé; Voarino, Philippe

    2007-12-20

    The described instrument is a new reflectometer designed to check the normal specular reflectance of 40,000 reflectors necessary for the Laser Megajoule (LMJ). This new reflectometer has a high accuracy over the 400-950 nm wavelength range and allows the delicate measurement of shaped parts. The measurements are relative and several reference mirrors, which are low loss dielectric mirrors [R(lambda)>99.9%], are used for the standardization. The apparatus gives an excellent repeatability (spectrophotometers, our facility and its components are described. The methodology of focusing and calibration are explained. The capabilities of our device are illustrated through some measurements realized on flat or shaped samples.

  9. An overview of the design and analysis of simulation experiments for sensitivity analysis

    NARCIS (Netherlands)

    Kleijnen, J.P.C.

    2005-01-01

    Sensitivity analysis may serve validation, optimization, and risk analysis of simulation models. This review surveys 'classic' and 'modern' designs for experiments with simulation models. Classic designs were developed for real, non-simulated systems in agriculture, engineering, etc. These designs

  10. New experimental model design for VAPEX process experiments

    Energy Technology Data Exchange (ETDEWEB)

    Yazdani, J.A.; Maini, B.B. [Calgary Univ., AB (Canada)

    2004-07-01

    The vast resources of heavy oil and bitumen deposits in Venezuela and Canada have become targets for finding less costly and more effective hydrocarbon recovery methods. Solvent extraction of heavy deposits is an attractive option that is gaining much attention as an in-situ recovery method. Vapour extraction (VAPEX) is analogous to the steam assisted gravity drainage (SAGD) process for the recovery of heavy oil and tar sand reservoirs. However, in VAPEX, vaporized solvents are used instead of high temperature steam and the viscosity of the oil is reduced in situ. VAPEX is particularly suited for formations that are thin and where heat losses are unavoidable. It is also well suited in the presence of overlying gas caps; bottom water aquifers; low thermal conductivity; high water saturation; clay swelling; and, formation damage. Most modelling studies use rectangular shaped models, but these have limitations at high reservoir pressures. This study presents a new design of physical models that overcomes these limitations. The annular space between two cylindrical pipes is used for developing slice-type and sand-filled models. This newly developed model is more compatible with higher pressures. This paper compares results of VAPEX experiments using the cylindrical models and the rectangular models. The stabilized drainage rates from the newly developed cylindrical models are in very good agreement with those from the rectangular models. 16 refs., 3 tabs., 11 figs.

  11. Irradiation Experiment Conceptual Design Parameters for NBSR Fuel Conversion

    Energy Technology Data Exchange (ETDEWEB)

    Brown, N. R. [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.; Brown, N. R. [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.; Baek, J. S [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.; Hanson, A. L. [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.; Cuadra, A. [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.; Cheng, L. Y. [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.; Diamond, D. J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Nuclear Science and Technology Dept.

    2014-04-30

    It has been proposed to convert the National Institute of Standards and Technology (NIST) research reactor, known as the NBSR, from high-enriched uranium (HEU) fuel to low-Enriched uranium (LEU) fuel. The motivation to convert the NBSR to LEU fuel is to reduce the risk of proliferation of special nuclear material. This report is a compilation of relevant information from recent studies related to the proposed conversion using a metal alloy of LEU with 10 w/o molybdenum. The objective is to inform the design of the mini-plate and full-size-Plate irradiation experiments that are being planned. This report provides relevant dimensions of the fuel elements, and the following parameters at steady state: average and maximum fission rate density and fission density, fuel temperature distribution for the plate with maximum local temperature, and two-dimensional heat flux profiles of fuel plates with high power densities. The latter profiles are given for plates in both the inner and outer core zones and for cores with both fresh and depleted shim arms (reactivity control devices). A summary of the methodology to obtain these results is presented. Fuel element tolerance assumptions and hot channel factors used in the safety analysis are also given.

  12. Irradiation Experiment Conceptual Design Parameters for NBSR Fuel Conversion

    Energy Technology Data Exchange (ETDEWEB)

    Brown N. R.; Brown,N.R.; Baek,J.S; Hanson, A.L.; Cuadra,A.; Cheng,L.Y.; Diamond, D.J.

    2013-03-31

    It has been proposed to convert the National Institute of Standards and Technology (NIST) research reactor, known as the NBSR, from high-enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel. The motivation to convert the NBSR to LEU fuel is to reduce the risk of proliferation of special nuclear material. This report is a compilation of relevant information from recent studies related to the proposed conversion using a metal alloy of LEU with 10 w/o molybdenum. The objective is to inform the design of the mini-plate and full-size plate irradiation experiments that are being planned. This report provides relevant dimensions of the fuel elements, and the following parameters at steady state: average and maximum fission rate density and fission density, fuel temperature distribution for the plate with maximum local temperature, and two-dimensional heat flux profiles of fuel plates with high power densities. . The latter profiles are given for plates in both the inner and outer core zones and for cores with both fresh and depleted shim arms (reactivity control devices). In addition, a summary of the methodology to obtain these results is presented.

  13. New Experiments to Measure the Muon Anomalous Gyromagnetic Moment

    CERN Document Server

    Eads, M

    2015-01-01

    The magnetic moment is a fundamental property of particles. The measurement of these magnetic moments and the comparison with the values predicted by the standard model of particle physics is a way to test our understanding of the fundamental building blocks of our world. In some cases, such as for the electron, this comparison has resulted in confirmation of the standard model with incredible precision. In contrast, the magnetic moment of the muon has shown a long-standing disagreement in the measured and the predicted value. There is currently a tantalizing three-standard-deviation difference between the current best measurement (with a precision of 0.54 ppm) and the state-of-the-art standard model prediction. This represents one of the very few experimental hints for physics beyond the standard model. There are currently two major experimental efforts underway to improve the precision of the muon magnetic moment measurement. The first is an evolution of the E-821 experiment, originally located at Brookhave...

  14. Mountain Heavy Rainfall Measurement Experiments in a Subtropical Monsoon Environment

    Science.gov (United States)

    Jong-Dao Jou, Ben; Chi-June Jung, Ultimate; Lai, Hsiao-Wei; Feng, Lei

    2014-05-01

    Quantitative rainfall measurement experiments have been conducted in Taiwan area for the past 5 years (since 2008), especially over the complex terrain region. In this paper, results from these experiments will be analyzed and discussed, especially those associated with heavy rain events in the summer monsoon season. Observations from s-band polarimetric radar (SPOL of NCAR) and also x-band vertically-pointing radar are analyzed to reveal the high resolution temporal and spatial variation of precipitation structure. May and June, the Meiyu season in the area, are months with subtropical frontal rainfall events. Mesoscale convective systems, i.e., pre-frontal squall lines and frontal convective rainbands, are very active and frequently produce heavy rain events over mountain areas. Accurate quantitative precipitation measurements are needed in order to meet the requirement for landslide and flood early warning purpose. Using ground-based disdrometers and vertically-pointing radar, we have been trying to modify the quantitative precipitation estimation in the mountain region by using coastal operational radar. In this paper, the methodology applied will be presented and the potential of its application will be discussed. *corresponding author: Ben Jong-Dao Jou, jouben43@gmail.com

  15. Finite element algorithm reproducing hip squeak measured in experiment

    Science.gov (United States)

    Kang, Jaeyoung

    2017-04-01

    In this study, the frequency spectrum of squeak noise in hip joint system is measured in experiment. The numerical reproduction of hip squeak signal involves the formulation of the finite element geometry, the analytical contact kinematics such as Hertz theory and Coulomb's law and the mode-discretization. For general approach, the contact kinematics are analytically modeled to easily adjust the contact location, the contact area, the rotation direction, the pressure distribution, the friction law, and so on. Furthermore the friction stress vectors act on the 3-dimensional spherical contact surfaces where they can be divided into the steady-sliding and its transverse slip directions. Numerical calculations for the various contact parameters are conducted to investigate the possibility of hip squeak occurrence and the nonlinear oscillations after the onset of squeak are also solved. In the transient analysis, the periodic limit cycle of hip squeaking is shown to be the stick-slip type oscillation. Then the numerical frequency spectrum is qualitatively compared with hip squeak signal measured in experiment. The stick-slip oscillation during hip squeaking and its contact behavior will be also discussed over the contact area within one period.

  16. First measurements with the Physikalisches Institut Radiometric Experiment (PHIRE)

    Science.gov (United States)

    Gunderson, K.; Thomas, N.; Whitby, J. A.

    2006-09-01

    We have constructed an experiment to perform bidirectional reflectance distribution function (BRDF) measurements of laboratory samples, and have used the experiment to characterize a sample of JSC-1 lunar regolith simulant. Characterizations relied on in-plane BRDF measurements in visible and near-infrared (NIR) bandpasses. The optical properties of the simulant sample were found to be similar to those observed for bright, lunar highland regions. Reflectance models (Hapke 1981. Bidirectional reflectance spectroscopy 1. Theory. J. Geophys. Res. 86(B4), 3,039-3,054; 1984. Bidirectional reflectance spectroscopy 3. Correction for macroscopic roughness. Icarus 59, 41-59; 1986. Bidirectional reflectance spectroscopy 4. The extinction coefficient and the opposition effect. Icarus 67, 264-280; 2002. Bidirectional reflectance spectroscopy 5. The coherent backscatter opposition effect and anisotropic scattering. Icarus 157, 523-534) made excellent fits to fixed incidence angle, variable emission angle data sets. However, the models were not found to extrapolate well to fixed, near-zero phase angle data at varying incidence angles, and no solutions were found that provided simultaneous, high quality fits to the two types of data sets. Except for the single-scattering albedo, the best-fit parameters of the fixed incidence angle data were statistically the same in the visible and NIR. Correlations between the reflectance model parameters were systematically examined, and strong correlations were found between single-scattering albedo and the two two-stream Henyey-Greenstein scattering parameters and, to a lesser extent, the small-scale mean surface roughness.

  17. Measuring CMB polarization from ISS: the SPOrt experiment

    Energy Technology Data Exchange (ETDEWEB)

    Colombo, L.P.L. [Physics Dep. ' G. Occhialini' , Universita di Milano-Bicocca and INFN sezione di Milano-Bicocca, Piazza della Scienza, 3 I-20126 Milan (Italy)

    2004-09-01

    The SPOrt (Sky Polarization Observatory) experiment aims to measure CMBP (cosmic microwave background polarization) on about 80% of the sky from space. Selected by ESA to fly on board the ISS in 2006, it is funded by the Italian Space Agency (ASI). As shown also by the recent WMAP release, CMBP data, besides of removing various degeneracies among cosmological parameters, provided new and important information on the cosmic opacity {tau} and, therefore, on very early cosmic objects which reionized the world at z {approx} 15. Most such information is obtained from low-l spectral components, that SPOrt, with its HPBW resolution of 7 degrees will explore with a high level of sensitivity. The 4 polarimeters of SPOrt work at 22, 32 and (2x) 90 GHz. At lower frequencies they will provide a (nearly) all-sky survey of Galactic synchrotron polarized emission, while data at the higher frequency will measure the CMBP signal. Correlating SPOrt with anisotropy data, by other experiments, shall therefore provide significant cosmological information. We performed a number of simulations of SPOrt performance, aimed to determine how far {tau} and/or other parameter(s) concerning reionization are constrained by the expected data. We also considered a possible interplay between reionization histories and Dark Energy nature. Besides of information on technological developments for systematics reduction, long term stability and observing time efficiency, we report here recent outputs on the expected SPOrt performance in constraining cosmological models.

  18. Design and calibration of the AWCC for measuring uranium hexafluoride

    Energy Technology Data Exchange (ETDEWEB)

    Wenz, T.R.; Menlove, H.O.; WSalton, G.; Baca, J.

    1995-08-01

    An Active Well Coincidence Counter (AWCC) has been modified to measure variable enrichment uranium hexafluoride (UF{sub 6}) in storage bottles. An active assay technique was used to measure the {sup 235}U content because of the small quantity (nominal loading of 2 kg UF{sub 6}) and nonuniform distribution of UF{sub 6} in the storage bottles. A new insert was designed for the AWCC composed of graphite containing four americium-lithium sources. Monte Carlo calculations were used to design the insert and to calibrate the detector. Benchmark measurements and calculations were performed using uranium oxide resulted in assay values that agreed within 2 to 3% of destructive assay values. In addition to UF{sub 6}, the detector was also calibrated for HEU ingots, billets, and alloy scrap using the standard Mode 1 end-plug configuration.

  19. Measures of agreement between computation and experiment:validation metrics.

    Energy Technology Data Exchange (ETDEWEB)

    Barone, Matthew Franklin; Oberkampf, William Louis

    2005-08-01

    With the increasing role of computational modeling in engineering design, performance estimation, and safety assessment, improved methods are needed for comparing computational results and experimental measurements. Traditional methods of graphically comparing computational and experimental results, though valuable, are essentially qualitative. Computable measures are needed that can quantitatively compare computational and experimental results over a range of input, or control, variables and sharpen assessment of computational accuracy. This type of measure has been recently referred to as a validation metric. We discuss various features that we believe should be incorporated in a validation metric and also features that should be excluded. We develop a new validation metric that is based on the statistical concept of confidence intervals. Using this fundamental concept, we construct two specific metrics: one that requires interpolation of experimental data and one that requires regression (curve fitting) of experimental data. We apply the metrics to three example problems: thermal decomposition of a polyurethane foam, a turbulent buoyant plume of helium, and compressibility effects on the growth rate of a turbulent free-shear layer. We discuss how the present metrics are easily interpretable for assessing computational model accuracy, as well as the impact of experimental measurement uncertainty on the accuracy assessment.

  20. Measuring and Advancing Experimental Design Ability in an Introductory Course without Altering Existing Lab Curriculum†

    Science.gov (United States)

    Shanks, Ryan A.; Robertson, Chuck L.; Haygood, Christian S.; Herdliksa, Anna M.; Herdliska, Heather R.; Lloyd, Steven A.

    2017-01-01

    Introductory biology courses provide an important opportunity to prepare students for future courses, yet existing cookbook labs, although important in their own way, fail to provide many of the advantages of semester-long research experiences. Engaging, authentic research experiences aid biology students in meeting many learning goals. Therefore, overlaying a research experience onto the existing lab structure allows faculty to overcome barriers involving curricular change. Here we propose a working model for this overlay design in an introductory biology course and detail a means to conduct this lab with minimal increases in student and faculty workloads. Furthermore, we conducted exploratory factor analysis of the Experimental Design Ability Test (EDAT) and uncovered two latent factors which provide valid means to assess this overlay model’s ability to increase advanced experimental design abilities. In a pre-test/post-test design, we demonstrate significant increases in both basic and advanced experimental design abilities in an experimental and comparison group. We measured significantly higher gains in advanced experimental design understanding in students in the experimental group. We believe this overlay model and EDAT factor analysis contribute a novel means to conduct and assess the effectiveness of authentic research experiences in an introductory course without major changes to the course curriculum and with minimal increases in faculty and student workloads. PMID:28904647