Science.gov

Sample records for master curve reference

  1. Estimation Uncertainty in the Determinatin of the Master Curve Reference Temperature

    SciTech Connect

    TL Sham; DR Eno

    2006-11-15

    The Master Curve Reference Temperature, T{sub 0}, characterizes the fracture performance of structural steels in the ductile-to-brittle transition region. For a given material, this reference temperature is estimated via fracture toughness testing. A methodology is presented to compute the standard error of an estimated T{sub 0} value from a finite sample of toughness data, in a unified manner for both constant temperature and multiple temperature test methods. Using the asymptotic properties of maximum likelihood estimators, closed-form expressions for the standard error of the estimate of T{sub 0} are presented for both test methods. This methodology includes statistically rigorous treatment of censored data, which represents an advance over the current ASTM E1921 methodology. Through Monte Carlo simulations of realistic constant temperature and multiple temperature test plans, the recommended likelihood-based procedure is shown to provide better statistical performance than the methods in the ASTM E1920 standards.

  2. A cleavage toughness master curve model

    NASA Astrophysics Data System (ADS)

    Odette, G. R.; He, M. Y.

    2000-12-01

    Development of fusion power will require a fracture toughness database, derived largely from small specimen tests, closely integrated with methods to assess first wall and blanket structural integrities. A master curve-shift (MC-ΔT) method has been proposed as an engineering expedient to treat the effects of structural geometry, irradiation, loading rates and safety margins. However, a number of issues related to the MC-ΔT method remain to be resolved, including the universality of MC shapes. A new micromechanical model of fracture toughness in the cleavage transition regime is proposed that combines analytical representations of finite element analysis simulations of crack-tip stress fields with a local critical stress-critical stressed area (σ∗-A∗) fracture criterion. This model, has been successful in predicting geometry effects, as well as high loading rate and irradiation hardening-induced Charpy shifts. By incorporating a modest temperature dependence in σ∗(T), an inconsistency between model predictions and an observed universal-type MC shape is resolved.

  3. The NASA master directory: Quick reference guide

    NASA Technical Reports Server (NTRS)

    Satin, Karen (Editor); Kanga, Carol (Editor)

    1989-01-01

    This is a quick reference guide to the NASA Master Directory (MD), which is a free, online, multidisciplinary directory of space and Earth science data sets (NASA and non-NASA data) that are of potential interest to the NASA-sponsored research community. The MD contains high-level descriptions of data sets, other data systems and archives, and campaigns and projects. It provides mechanisms for searching for data sets by important criteria such as geophysical parameters, time, and spatial coverage, and provides information on ordering the data. It also provides automatic connections to a number of data systems such as the NASA Climate Data System, the Planetary Data System, the NASA Ocean Data System, the Pilot Land Data System, and others. The MD includes general information about many data systems, data centers, and coordinated data analysis projects, It represents the first major step in the Catalog Interoperability project, whose objective is to enable researchers to quickly and efficiently identify, obtain information about, and get access to space and Earth science data. The guide describes how to access, use, and exit the MD and lists its features.

  4. Strain-rate master curves for a PBX and binder

    NASA Astrophysics Data System (ADS)

    Drodge, Daniel; Williamson, David; Palmer, Stewart; Proud, William

    2011-06-01

    Many studies have been performed, using several different experimental techniques, to characterise the mechanical response of Polymer Bonded Explosives (PBX). Here we draw together a range of techniques, namely Dynamic Mechanical Analysis, quasi-static compression, Hopkinson Bar and ultrasonics, to produce a master curve. This was performed with a UK PBX and its binder, and the shift-factors required to produce a consistent master curve were consistent with previous findings, and furthermore implied that a simple linear conversion between strain-rate and frequency is acceptable, the constant of proportionality being 2 π . This has been cited before as a consequence of the Cox Merz rule. The benefit of this approach is that a wider range of mechanical testing data can now be employed in code validation.

  5. Reference Two. Does Foucault Kill Derrida in the Game of References? The Example of Master's Dissertations.

    ERIC Educational Resources Information Center

    Smith, Howard A.

    1999-01-01

    Discusses a selection of ideas and writings by Michael Foucault into competition with those of Jacques Derrida. Consisted of a single game of references for which the references were those cited in a sample of master's theses produced recently at Queen's University. Examined master's dissertations, because these are the usual means by which…

  6. Towards the establishment of an archeointensity master curve for Mesoamerica

    NASA Astrophysics Data System (ADS)

    Morales, J.; Gogichaisvili, A.; Acosta, G.; Gonzales, T.

    2007-05-01

    We present new rock-magnetic and archaeointensity results of some pre-Columbian potteries found at archaeological caves in Chiapas, Southeast Mexico. The ceramics studied consist mostly of tiles of different archaeological artifacts. Their archeological ages cover mainly two ranges: from 550-250 BC and from 100-500 AD. `Rock-magnetic' experiments which included susceptibility vs. temperature and hysteresis measurements were used to select magnetically stable and suitable material for Thellier absolute intensity determinations. Six out of thirteen archaeological tiles, which showed no evidence of strong secondary components and presenting almost reversible susceptibility curves, were selected for archeointensity studies. Each of these tiles were further divided into at least seven fragments and then set in salt (NaCl) pellets in order to treat them as standard paleomagnetic cores. Magnetization per unit volume of `blank' pellets is negligible with respect to that of ceramic samples. Archeointensity experiments were carried out using the Coe version of the Thellier method. Cooling rate and anisotropy effects were investigated on each sample. Thellier experiments yielded unusually high success rate and data obtained are of excellent technical quality, attested by reasonably high Coe's factors. This pioneering study proves the usefulness of Mesoamerican ceramics for archeointensity studies and opens new perspectives towards the establishment of a reference intensity variation curve for the region.

  7. Master Curve and Conventional Fracture Toughness of Modified 9Cr-1Mo Steel

    SciTech Connect

    Ji-Hyun, Yoon; Sung-Ho, Kim; Bong-Sang, Lee; Woo-Seog, Ryu; Jonghwa, Chang

    2006-07-01

    Modified 9Cr-1Mo steel is a primary candidate material for reactor pressure vessel of Very High Temperature Gas-Cooled Reactor (VHTR) in Korean Nuclear Hydrogen Development and Demonstration (NHDD) program. In this study, T0 reference temperature, J-R fracture resistance and Charpy impact properties were evaluated for commercial Grade 91 steel as preliminary tests for the selection of the RPV material for VHTR. The fracture toughness of the modified 9Cr-1Mo steel was compared with those of SA508-Gr.3. The objective of this study was to obtain pre-irradiation fracture toughness properties of modified 9Cr-1Mo steel as reference data for the radiation effects investigation. The results are as follows. Charpy impact properties of the modified 9Cr-1Mo steel were similar to those of SA508-Gr.3. T0 reference temperatures were measured as -67.7 deg C and -72.4 deg C from the tests with standard PCVN (pre-cracked Charpy V-notch) and half sized PCVN specimens respectively, which were similar to results for SA508-Gr.3. The K{sub Jc} values of modified 9Cr-1Mo with test temperatures are successfully expressed with the Master Curve. The J-R fracture resistance of modified 9Cr-1Mo steel at room temperature was almost the same as that of SA508-Gr.3. On the other hand it was a little bit higher at an elevated temperature. (authors)

  8. Econophysics: Master curve for price-impact function

    NASA Astrophysics Data System (ADS)

    Lillo, Fabrizio; Farmer, J. Doyne; Mantegna, Rosario N.

    2003-01-01

    The price reaction to a single transaction depends on transaction volume, the identity of the stock, and possibly many other factors. Here we show that, by taking into account the differences in liquidity for stocks of different size classes of market capitalization, we can rescale both the average price shift and the transaction volume to obtain a uniform price-impact curve for all size classes of firm for four different years (1995-98). This single-curve collapse of the price-impact function suggests that fluctuations from the supply-and-demand equilibrium for many financial assets, differing in economic sectors of activity and market capitalization, are governed by the same statistical rule.

  9. Applicability of the fracture toughness master curve to irradiated highly embrittled steel and intergranular fracture

    SciTech Connect

    Nanstad, Randy K; Sokolov, Mikhail A; McCabe, Donald E

    2008-01-01

    The Heavy-Section Steel Irradiation (HSSI) Program at Oak Ridge National Laboratory has evaluated a submerged-arc (SA) weld irradiated to a high level of embrittlement and a temper embrittled base metal that exhibits significant intergranular fracture (IGF) relative to representation by the Master Curve. The temper embrittled steel revealed that the intergranular mechanism significantly extended the transition temperature range up to 150 C above To. For the irradiated highly embrittled SA weld study, a total of 21 1T compact specimens were tested at five different temperatures and showed the Master Curve to be nonconservative relative to the results, although that observation is uncertain due to evidence of intergranular fracture.

  10. Multilevel Models for the Analysis of Angle-Specific Torque Curves with Application to Master Athletes

    PubMed Central

    Carvalho, Humberto M

    2015-01-01

    The aim of this paper was to outline a multilevel modeling approach to fit individual angle-specific torque curves describing concentric knee extension and flexion isokinetic muscular actions in Master athletes. The potential of the analytical approach to examine between individual differences across the angle-specific torque curves was illustrated including between-individuals variation due to gender differences at a higher level. Torques in concentric muscular actions of knee extension and knee extension at 60º·s−1 were considered within a range of motion between 5º and 85º (only torques “truly” isokinetic). Multilevel time series models with autoregressive covariance structures with standard multilevel models were superior fits compared with standard multilevel models for repeated measures to fit angle-specific torque curves. Third and fourth order polynomial models were the best fits to describe angle-specific torque curves of isokinetic knee flexion and extension concentric actions, respectively. The fixed exponents allow interpretations for initial acceleration, the angle at peak torque and the decrement of torque after peak torque. Also, the multilevel models were flexible to illustrate the influence of gender differences on the shape of torque throughout the range of motion and in the shape of the curves. The presented multilevel regression models may afford a general framework to examine angle-specific moment curves by isokinetic dynamometry, and add to the understanding mechanisms of strength development, particularly the force-length relationship, both related to performance and injury prevention. PMID:26839603

  11. Tracking stochastic resonance curves using an assisted reference model.

    PubMed

    Calderón Ramírez, Mario; Rico Martínez, Ramiro; Ramírez Álvarez, Elizeth; Parmananda, P

    2015-06-01

    The optimal noise amplitude for Stochastic Resonance (SR) is located employing an Artificial Neural Network (ANN) reference model with a nonlinear predictive capability. A modified Kalman Filter (KF) was coupled to this reference model in order to compensate for semi-quantitative forecast errors. Three manifestations of stochastic resonance, namely, Periodic Stochastic Resonance (PSR), Aperiodic Stochastic Resonance (ASR), and finally Coherence Resonance (CR) were considered. Using noise amplitude as the control parameter, for the case of PSR and ASR, the cross-correlation curve between the sub-threshold input signal and the system response is tracked. However, using the same parameter the Normalized Variance curve is tracked for the case of CR. The goal of the present work is to track these curves and converge to their respective extremal points. The ANN reference model strategy captures and subsequently predicts the nonlinear features of the model system while the KF compensates for the perturbations inherent to the superimposed noise. This technique, implemented in the FitzHugh-Nagumo model, enabled us to track the resonance curves and eventually locate their optimal (extremal) values. This would yield the optimal value of noise for the three manifestations of the SR phenomena. PMID:26117101

  12. Tracking stochastic resonance curves using an assisted reference model

    SciTech Connect

    Calderón Ramírez, Mario; Rico Martínez, Ramiro; Parmananda, P.

    2015-06-15

    The optimal noise amplitude for Stochastic Resonance (SR) is located employing an Artificial Neural Network (ANN) reference model with a nonlinear predictive capability. A modified Kalman Filter (KF) was coupled to this reference model in order to compensate for semi-quantitative forecast errors. Three manifestations of stochastic resonance, namely, Periodic Stochastic Resonance (PSR), Aperiodic Stochastic Resonance (ASR), and finally Coherence Resonance (CR) were considered. Using noise amplitude as the control parameter, for the case of PSR and ASR, the cross-correlation curve between the sub-threshold input signal and the system response is tracked. However, using the same parameter the Normalized Variance curve is tracked for the case of CR. The goal of the present work is to track these curves and converge to their respective extremal points. The ANN reference model strategy captures and subsequently predicts the nonlinear features of the model system while the KF compensates for the perturbations inherent to the superimposed noise. This technique, implemented in the FitzHugh-Nagumo model, enabled us to track the resonance curves and eventually locate their optimal (extremal) values. This would yield the optimal value of noise for the three manifestations of the SR phenomena.

  13. Fully automated objective-based method for master recession curve separation.

    PubMed

    Posavec, Kristijan; Parlov, Jelena; Nakić, Zoran

    2010-01-01

    The fully automated objective-based method for master recession curve (MRC) separation was developed by using Microsoft Excel spreadsheet and Visual Basic for Applications (VBA) code. The core of the program code is used to construct an MRC by using the adapted matching strip method (Posavec et al. 2006). Criteria for separating the MRC into two or three segments are determined from the flow-duration curve and are represented as the probable range of percent of flow rate duration. Successive separations are performed automatically on two and three MRCs using sets of percent of flow rate duration from selected ranges and an optimal separation model scenario, having the highest average coefficient of determination R(2), is selected as the most appropriate one. The resulting separated master recession curves are presented graphically, whereas the statistics are presented numerically, all in separate sheets. Examples of field data obtained from two springs in Istria, Croatia, are used to illustrate its application. The freely available Excel spreadsheet and VBA program ensures the ease of use and applicability for larger data sets. PMID:20100291

  14. An Approximate Solution and Master Curves for Buckling of Symmetrically Laminated Composite Cylinders

    NASA Technical Reports Server (NTRS)

    Nemeth, Michael P.

    2013-01-01

    Nondimensional linear-bifurcation buckling equations for balanced, symmetrically laminated cylinders with negligible shell-wall anisotropies and subjected to uniform axial compression loads are presented. These equations are solved exactly for the practical case of simply supported ends. Nondimensional quantities are used to characterize the buckling behavior that consist of a stiffness-weighted length-to-radius parameter, a stiffness-weighted shell-thinness parameter, a shell-wall nonhomogeneity parameter, two orthotropy parameters, and a nondimensional buckling load. Ranges for the nondimensional parameters are established that encompass a wide range of laminated-wall constructions and numerous generic plots of nondimensional buckling load versus a stiffness-weighted length-to-radius ratio are presented for various combinations of the other parameters. These plots are expected to include many practical cases of interest to designers. Additionally, these plots show how the parameter values affect the distribution and size of the festoons forming each response curve and how they affect the attenuation of each response curve to the corresponding solution for an infinitely long cylinder. To aid in preliminary design studies, approximate formulas for the nondimensional buckling load are derived, and validated against the corresponding exact solution, that give the attenuated buckling response of an infinitely long cylinder in terms of the nondimensional parameters presented herein. A relatively small number of "master curves" are identified that give a nondimensional measure of the buckling load of an infinitely long cylinder as a function of the orthotropy and wall inhomogeneity parameters. These curves reduce greatly the complexity of the design-variable space as compared to representations that use dimensional quantities as design variables. As a result of their inherent simplicity, these master curves are anticipated to be useful in the ongoing development of

  15. Extension of the master sintering curve for constant heating rate modeling

    NASA Astrophysics Data System (ADS)

    McCoy, Tammy Michelle

    The purpose of this work is to extend the functionality of the Master Sintering Curve (MSC) such that it can be used as a practical tool for predicting sintering schemes that combine both a constant heating rate and an isothermal hold. Rather than just being able to predict a final density for the object of interest, the extension to the MSC will actually be able to model a sintering run from start to finish. Because the Johnson model does not incorporate this capability, the work presented is an extension of what has already been shown in literature to be a valuable resource in many sintering situations. A predicted sintering curve that incorporates a combination of constant heating rate and an isothermal hold is more indicative of what is found in real-life sintering operations. This research offers the possibility of predicting the sintering schedule for a material, thereby having advanced information about the extent of sintering, the time schedule for sintering, and the sintering temperature with a high degree of accuracy and repeatability. The research conducted in this thesis focuses on the development of a working model for predicting the sintering schedules of several stabilized zirconia powders having the compositions YSZ (HSY8), 10Sc1CeSZ, 10Sc1YSZ, and 11ScSZ1A. The compositions of the four powders are first verified using x-ray diffraction (XRD) and the particle size and surface area are verified using a particle size analyzer and BET analysis, respectively. The sintering studies were conducted on powder compacts using a double pushrod dilatometer. Density measurements are obtained both geometrically and using the Archimedes method. Each of the four powders is pressed into ¼" diameter pellets using a manual press with no additives, such as a binder or lubricant. Using a double push-rod dilatometer, shrinkage data for the pellets is obtained over several different heating rates. The shrinkage data is then converted to reflect the change in relative

  16. Problems in archaeomagnetic reference curves elaboration in the prehistoric past.

    NASA Astrophysics Data System (ADS)

    Avramova, M.; Kovacheva, M.; Boyadziev, Y.

    2012-04-01

    Most important task of archaeomagnetic studies is the construction of the geomagnetic field secular variations in the past for a given territory. The obtained reference curves would be precise only when a large number of well-dated archaeological sites from different time periods are included as input data. Sofia Palaeomagnetic laboratory is the first one in the Balkans to accumulate a large number of data spanning the time interval of 3000 BP to 8000 BP. Many archaeological sites in Bulgaria are multilevel settlements with clear stratigraphy. Commonly the prehistoric sites are dated according to the relative chronology, the type of archaeological artifacts found and 14C dates, the latter being not always available. The biggest difficulty is that usually the radiocarbon dates are not well constrained, often contradictory to the vertical stratigraphy. The transformation of conventional 14C dates to absolute dates BC depends a lot on which part of dendrochronological calibration curve are they related. Besides, multiple dating intervals are often obtained and the calibrated intervals are usually very large (from 100 to 300 and more years). However, when archaeological discoveries of multilevel prehistoric sites are combined with archaeomagnetic investigations the corresponding archaeomagnetic profiles can be obtained. Currently we have archaeomagnetic data for fifteen prehistoric multilevel sites - two of them are Neolithic, nine - Eneolithic and four are from the Bronze Age. The next step is to juxtapose these stratigraphic profiles with the absolute scale of time having in mind that not all sites and layers have 14C dates. Thanks to abundance of 14C dates for most of Bulgarian prehistoric sites, multilayer sites connected with the absolute chronology exist and can be used as reference profiles. The time frames of each horizon for such reference site are based on series of 14C dates (not single measurements), the analysis of the thickness of layers, type of material

  17. Statistical Analyses for Probabilistic Assessments of the Reactor Pressure Vessel Structural Integrity: Building a Master Curve on an Extract of the 'Euro' Fracture Toughness Dataset, Controlling Statistical Uncertainty for Both Mono-Temperature and multi-temperature tests

    SciTech Connect

    Josse, Florent; Lefebvre, Yannick; Todeschini, Patrick; Turato, Silvia; Meister, Eric

    2006-07-01

    Assessing the structural integrity of a nuclear Reactor Pressure Vessel (RPV) subjected to pressurized-thermal-shock (PTS) transients is extremely important to safety. In addition to conventional deterministic calculations to confirm RPV integrity, Electricite de France (EDF) carries out probabilistic analyses. Probabilistic analyses are interesting because some key variables, albeit conventionally taken at conservative values, can be modeled more accurately through statistical variability. One variable which significantly affects RPV structural integrity assessment is cleavage fracture initiation toughness. The reference fracture toughness method currently in use at EDF is the RCCM and ASME Code lower-bound K{sub IC} based on the indexing parameter RT{sub NDT}. However, in order to quantify the toughness scatter for probabilistic analyses, the master curve method is being analyzed at present. Furthermore, the master curve method is a direct means of evaluating fracture toughness based on K{sub JC} data. In the framework of the master curve investigation undertaken by EDF, this article deals with the following two statistical items: building a master curve from an extract of a fracture toughness dataset (from the European project 'Unified Reference Fracture Toughness Design curves for RPV Steels') and controlling statistical uncertainty for both mono-temperature and multi-temperature tests. Concerning the first point, master curve temperature dependence is empirical in nature. To determine the 'original' master curve, Wallin postulated that a unified description of fracture toughness temperature dependence for ferritic steels is possible, and used a large number of data corresponding to nuclear-grade pressure vessel steels and welds. Our working hypothesis is that some ferritic steels may behave in slightly different ways. Therefore we focused exclusively on the basic french reactor vessel metal of types A508 Class 3 and A 533 grade B Class 1, taking the sampling

  18. Master curve characterization of the fracture toughness behavior in SA508 Gr.4N low alloy steels

    NASA Astrophysics Data System (ADS)

    Lee, Ki-Hyoung; Kim, Min-Chul; Lee, Bong-Sang; Wee, Dang-Moon

    2010-08-01

    The fracture toughness properties of the tempered martensitic SA508 Gr.4N Ni-Mo-Cr low alloy steel for reactor pressure vessels were investigated by using the master curve concept. These results were compared to those of the bainitic SA508 Gr.3 Mn-Mo-Ni low alloy steel, which is a commercial RPV material. The fracture toughness tests were conducted by 3-point bending with pre-cracked charpy (PCVN) specimens according to the ASTM E1921-09c standard method. The temperature dependency of the fracture toughness was steeper than those predicted by the standard master curve, while the bainitic SA508 Gr.3 steel fitted well with the standard prediction. In order to properly evaluate the fracture toughness of the Gr.4N steels, the exponential coefficient of the master curve equation was changed and the modified curve was applied to the fracture toughness test results of model alloys that have various chemical compositions. It was found that the modified curve provided a better description for the overall fracture toughness behavior and adequate T0 determination for the tempered martensitic SA508 Gr.4N steels.

  19. Sintering Behavior of Nanocrystalline Silicon Carbide Using a Plasma Pressure Compaction System: Master Sintering Curve Analysis

    NASA Astrophysics Data System (ADS)

    Bothara, Manish G.; Atre, Sundar V.; Park, Seong-Jin; German, Randall M.; Sudarshan, T. S.; Radhakrishnan, R.

    2010-12-01

    Nanostructured ceramics offer significant improvements in properties over corresponding materials with larger grain sizes on the order of tens to hundreds of micrometers. Silicon carbide (SiC) samples with grain sizes on the order of 100 nm can result in improved strength, chemical resistance, thermal stability, and tailored electrical resistivity. In this study, nanocrystalline SiC was processed in a plasma pressure compaction (P2C) system at a temperature of 1973 K (1700 °C) that was much lower than the temperatures reported for other sintering techniques. Microstructure of the resulting samples was studied and the hardness and the fracture toughness were measured. The grain sizes were on the order of 700 nm, the hardness between 22 and 24 GPa, and the toughness between 5 and 6.5 MPa·m1/2. The master sintering curve (MSC) analysis was used to model the densification behavior of SiC powder sintered by the P2C method. The apparent activation energies for three different pressures of 10, 30, and 50 MPa were obtained to be 1666, 1034, and 1162 kJ/mol, respectively. Although densification occurs via diffusion, the activation energies were higher than those associated with self-diffusion in SiC (between 570 and 920 kJ/mol). A validation study of the MSC was also conducted and the variation in observed density from the density predicted by the MSC was found to range from 1 to 10 pct.

  20. Single specimen method for determining the master curve in the transition

    SciTech Connect

    Landes, J.D.; Sakalla, K.

    1997-12-31

    A single specimen method was developed to predict the fracture toughness behavior for steels in the transition. The prediction is based on a single specimen estimate of lower bound toughness in the transition and order statistics. A fracture toughness from a single test is subjected to a lower bound estimate to generate a single lower bound value. This value is transformed into a fictitious distribution of toughness values using order statistics. From this a median value of toughness, K{sub Jc(med)} is determined and hence T{sub o} where T{sub o} is the temperature at which the master curve reaches a median toughness of 100 MPa{radical}m. With the determination of T{sub o} the entire distribution of toughness in the transition is determined. The single specimen method of T{sub o} determination was evaluated for transition toughness tests where a large number of fracture toughness values were available at a single temperature. Single specimen values of T{sub o} were compared with the T{sub o} from the entire population of fracture toughness values and from random selections of six toughness values taken one at a time. The result of the evaluation shows that the single specimen could estimate T{sub o} to within a reasonable value if the test temperature was close to T{sub o}. Compared with the result of a random selection of six values to determine T{sub o} the single specimen method gave similar results.

  1. A computer program for predicting recharge with a master recession curve

    USGS Publications Warehouse

    Heppner, Christopher S.; Nimmo, John R.

    2005-01-01

    Water-table fluctuations occur in unconfined aquifers owing to ground-water recharge following precipitation and infiltration, and ground-water discharge to streams between storm events. Ground-water recharge can be estimated from well hydrograph data using the water-table fluctuation (WTF) principle, which states that recharge is equal to the product of the water-table rise and the specific yield of the subsurface porous medium. The water-table rise, however, must be expressed relative to the water level that would have occurred in the absence of recharge. This requires a means for estimating the recession pattern of the water-table at the site. For a given site there is often a characteristic relation between the water-table elevation and the water-table decline rate following a recharge event. A computer program was written which extracts the relation between decline rate and water-table elevation from well hydrograph data and uses it to construct a master recession curve (MRC). The MRC is a characteristic water-table recession hydrograph, representing the average behavior for a declining water-table at that site. The program then calculates recharge using the WTF method by comparing the measured well hydrograph with the hydrograph predicted by the MRC and multiplying the difference at each time step by the specific yield. This approach can be used to estimate recharge in a continuous fashion from long-term well records. Presented here is a description of the code including the WTF theory and instructions for running it to estimate recharge with continuous well hydrograph data.

  2. Master sintering curves for UO2 and UO2-SiC composite processed by spark plasma sintering

    NASA Astrophysics Data System (ADS)

    Chen, Zhichao; Subhash, Ghatu; Tulenko, James S.

    2014-11-01

    Master sintering curve (MSC) theory has been applied successfully to UO2 and UO2-SiC composite ceramics processed using spark plasma sintering (SPS). By applying the constant heating rate method, where the powder compact was heated at a constant rate to a specified maximum temperature and then cooled naturally, the apparent activation energies for sintering have been determined to be 140 kJ/mol for UO2 and 420 kJ/mol for UO2-SiC composite. The ability of the derived MSCs to control and predict final density in the sintered compact was demonstrated by additional experimental runs using the isothermal heating method, in which the powder is held for a specified time at the maximum sintering temperature. It is shown that the master sintering curve is an effective tool to characterize the densification and sinterability behavior of a given nuclear powder compact during spark plasma sintering. The reason for significantly lower activation energy in SPS processed UO2 pellets compared to conventional sintering has been rationalized on the basis of field activation in SPS process.

  3. Evaluation of fracture toughness master curve shifts for JMTR irradiated F82H using small specimens

    NASA Astrophysics Data System (ADS)

    Yamamoto, T.; Odette, G. R.; Gragg, D.; Kurishita, H.; Matsui, H.; Yang, W. J.; Narui, M.; Yamazaki, M.

    2007-08-01

    Small to ultra-small 1/3 size pre-cracked Charpy and 1.65 × 1.65 × 9 mm deformation and fracture minibeam (DFMB) specimens of the F82H IEA heat were irradiated to 0.02 and 0.12 dpa at 290 °C in the Japanese Materials Test Reactor. Nominal cleavage transition temperature shifts, based on the measured toughness, KJm( T), data (Δ Tm) as well as reference temperature shifts (Δ T0) found after size-adjusting the KJm( T) data yielded Δ Tm/0 ≈ 27 ± 10 and 44 ± 10 at the two doses, respectively. Using measured yield stress changes (Δ σy), the C0 = Δ T0/Δ σy = 0.58 ± 0.14 at 0.12 dpa, is in good agreement with data in the literature. The dynamic transition temperature shift, Δ Td, derived from DFMB tests, was ≈30 ± 20 °C at 0.1 dpa, also in good agreement with the estimated Δ T0 shifts. The Δ Td and Δ T0 are also in excellent agreement with a Δ T0 = C 0Δ σy (dpa, Ti) hardening-shift model, where the Δ σy (dpa, Ti) was found by fitting a large database of tensile properties.

  4. Humidity and temperature doubly shifted fracture energy master curves for the prediction of sealant adhesion to aluminum under climate induced cyclic strain

    SciTech Connect

    Shephard, N.E.; Wightman, J.P.

    1996-12-31

    The objective of this research was to construct fracture energy master curves for the sealant/aluminum interphase using a 45{degrees} peel test; and use these curves to predict the annual crack growth of a sealant/aluminum butt Joint exposed to various climates. The shifting variables were humidity and temperature. The crack speed vs. fracture energy was measured using a 45{degrees} peel test and master curves were constructed. The location and mechanism of the failure zone was related to the shifting variables. For the butt joint, a pure shear (a thin long butt joint) adhesion test was used to measure the crack speed vs. strain energy as a function of temperature, relative humidity was held constant. An equation was constructed which relates the crack speed in the butt joint to the strain energy, temperature and relative humidity using the shift factor equation from the peel test. Climate data for Wittman, Arizona and Miami, Florida was used to determine the daily strain energy, temperature and relative humidity for the hypothetical butt joint. Finally, this data was combined with the master curve equations and butt joint equations to calculate the crack length at any time for the two climates.

  5. IAEA Coordinated Research Project on Master Curve Approach to Monitor Fracture Toughness of RPV Steels: Final Results of the Experimental Exercise to Support Constraint Effects

    SciTech Connect

    Nanstad, Randy K

    2009-01-01

    The precracked Charpy single-edge notched bend, SE(B), specimen (PCC) is the most likely specimen type to be used for determination of the reference temperature, T0, with reactor pressure vessel (RPV) surveillance specimens. Unfortunately, for many RPV steels, significant differences have been observed between the T0 temperature for the PCC specimen and that obtained from the 25-mm thick compact specimen [1TC(T)], generally considered the standard reference specimen for T0. This difference in T0 has often been designated a specimen bias effect, and the primary focus for explaining this effect is loss of constraint in the PCC specimen. The International Atomic Energy Agency (IAEA) has developed a coordinated research project (CRP) to evaluate various issues associated with the fracture toughness Master Curve for application to light-water RPVs. Topic Area 1 of the CRP is focused on the issue of test specimen geometry effects, with emphasis on determination of T0 with the PCC specimen and the bias effect. Topic Area 1 has an experimental part and an analytical part. Participating organizations for the experimental part of the CRP performed fracture toughness testing of various steels, including the reference steel JRQ (A533-B-1) often used for IAEA studies, with various types of specimens under various conditions. Additionally, many of the participants took part in a round robin exercise on finite element modeling of the PCVN specimen, discussed in a separate paper. Results from fracture toughness tests are compared with regard to effects of specimen size and type on the reference temperature T0. It is apparent from the results presented that the bias observed between the PCC specimen and larger specimens for Plate JRQ is not nearly as large as that obtained for Plate 13B (-11 C vs -37 C) and for some of the results in the literature (bias values as much as -45 C). This observation is consistent with observations in the literature that show significant variations in

  6. Relationship between ventilatory function and age in master athletes and a sedentary reference population.

    PubMed

    Degens, Hans; Maden-Wilkinson, Thomas Mark; Ireland, Alex; Korhonen, Marko T; Suominen, Harri; Heinonen, Ari; Radak, Zsolt; McPhee, Jamie S; Rittweger, Jörn

    2013-06-01

    Ageing is accompanied with a decline in respiratory function. It is hypothesised that this may be attenuated by high physical activity levels. We performed spirometry in master athletes (71 women; 84 men; 35-86 years) and sedentary people (39 women; 45 men; 24-82 years), and calculated the predicted lung age (PLA). The negative associations of age with forced expiratory volume in 1 s (FEV1; 34 mL·year(-1)) and other ventilatory parameters were similar in controls and master athletes. FEV1pred was 9 % higher (P < 0.005) and PLA 15 % lower (P = 0.013) in athletes than controls. There were no significant differences between endurance and power athletes and sedentary people in maximal inspiratory and expiratory pressure. Neither age-graded performance nor weekly training hours were significantly related to lung age. Life-long exercise does not appear to attenuate the age-related decrease in ventilatory function. The better respiratory function in master athletes than age-matched sedentary people might be due to self-selection and attrition bias. PMID:22544616

  7. Age-specific percentile-based reference curve of serum procalcitonin concentrations in Japanese preterm infants.

    PubMed

    Fukuzumi, Noriko; Osawa, Kayo; Sato, Itsuko; Iwatani, Sota; Ishino, Ruri; Hayashi, Nobuhide; Iijima, Kazumoto; Saegusa, Jun; Morioka, Ichiro

    2016-01-01

    Procalcitonin (PCT) levels are elevated early after birth in newborn infants; however, the physiological features and reference of serum PCT concentrations have not been fully studied in preterm infants. The aims of the current study were to establish an age-specific percentile-based reference curve of serum PCT concentrations in preterm infants and determine the features. The PCT concentration peaked in infants at 1 day old and decreased thereafter. At 1 day old, serum PCT concentrations in preterm infants <34 weeks' gestational age were higher than those in late preterm infants between 34 and 36 weeks' gestational age or term infants ≥37 weeks' gestational age. Although the 50-percentile value in late preterm and term infants reached the adult normal level (0.1 ng/mL) at 5 days old, it did not in preterm infants. It took 9 weeks for preterm infants to reach it. Serum PCT concentrations at onset in late-onset infected preterm infants were over the 95-percentile value. We showed that the physiological feature in preterm infants was significantly different from that in late preterm infants, even in those <37 weeks' gestational age. To detect late-onset bacterial infection and sepsis, an age-specific percentile-based reference curve may be useful in preterm infants. PMID:27033746

  8. Age-specific percentile-based reference curve of serum procalcitonin concentrations in Japanese preterm infants

    PubMed Central

    Fukuzumi, Noriko; Osawa, Kayo; Sato, Itsuko; Iwatani, Sota; Ishino, Ruri; Hayashi, Nobuhide; Iijima, Kazumoto; Saegusa, Jun; Morioka, Ichiro

    2016-01-01

    Procalcitonin (PCT) levels are elevated early after birth in newborn infants; however, the physiological features and reference of serum PCT concentrations have not been fully studied in preterm infants. The aims of the current study were to establish an age-specific percentile-based reference curve of serum PCT concentrations in preterm infants and determine the features. The PCT concentration peaked in infants at 1 day old and decreased thereafter. At 1 day old, serum PCT concentrations in preterm infants <34 weeks’ gestational age were higher than those in late preterm infants between 34 and 36 weeks’ gestational age or term infants ≥37 weeks’ gestational age. Although the 50-percentile value in late preterm and term infants reached the adult normal level (0.1 ng/mL) at 5 days old, it did not in preterm infants. It took 9 weeks for preterm infants to reach it. Serum PCT concentrations at onset in late-onset infected preterm infants were over the 95-percentile value. We showed that the physiological feature in preterm infants was significantly different from that in late preterm infants, even in those <37 weeks’ gestational age. To detect late-onset bacterial infection and sepsis, an age-specific percentile-based reference curve may be useful in preterm infants. PMID:27033746

  9. Hybrid III Lower Leg Injury Assessment Reference Curves Under Axial Impacts Using Matched-Pair Tests.

    PubMed

    Yoganandan, Narayan; Pintar, Frank; Banerjee, Anjishnu; Schlick, Michael; Chirvi, Sajal; Uppal, Hermeeth; Merkle, Andrew; Voo, Liming; Kleinberg, Michael

    2015-01-01

    The objective of the present study was to derive injury probability curves applicable to the Hybrid III dummy (also termed the Anthropomorphic Test Device, ATD) lower leg under axial impacts for military applications. A matched-pair approach was used. Axial impacts were delivered to below knee foot-ankle complex preparations of the lower leg of the ATD using pendulum and custom vertical accelerator devices. Military boot was used in some tests. Post mortem human surrogate (PMHS) preparations were used as matched-pair tests for injury outcomes. The alignment was such that the foot-ankle complex was orthogonal to the leg (below knee tibia-fibula complex), termed as the normal 90-90 posture. Injury outcomes from the biological surrogate focused on calcaneus and or distal tibia fractures with or without the involvement of articular surfaces. Peak lower tibia load cell forces were obtained from matched-pair dummy tests. Injury and force data were paired, censoring was assigned based on injury outcomes and survival analysis was done using the Weibull distribution to derive dummy-based probability curves. Mean peak forces were extracted at 5, 10, 20 and 50% probability levels. Normalized confidence interval sizes (NCIS) at ± 95% level were computed to determine the tightness-of-fit of the confidence bands. The NCIS data ranged from 0.34 to 0.78 and a peak force of 8.2 kN was associated at the ten percent injury probability level. Other data and curves are given in the body of the paper. The present Injury Assessment Reference Curves and Values (IARC and IARV) may be used in future tests for advancing safety in military environments. These survival analysis processes and IARC and IARV data may also be used in other applications. PMID:25996722

  10. The Characteristic Curves of Water

    NASA Astrophysics Data System (ADS)

    Neumaier, Arnold; Deiters, Ulrich K.

    2016-09-01

    In 1960, E. H. Brown defined a set of characteristic curves (also known as ideal curves) of pure fluids, along which some thermodynamic properties match those of an ideal gas. These curves are used for testing the extrapolation behaviour of equations of state. This work is revisited, and an elegant representation of the first-order characteristic curves as level curves of a master function is proposed. It is shown that Brown's postulate—that these curves are unique and dome-shaped in a double-logarithmic p, T representation—may fail for fluids exhibiting a density anomaly. A careful study of the Amagat curve (Joule inversion curve) generated from the IAPWS-95 reference equation of state for water reveals the existence of an additional branch.

  11. A master curve-mechanism based approach to modeling the effects of constraint, loading rate and irradiation on the toughness-temperature behavior of a V-4Cr-4Ti alloy

    SciTech Connect

    Odette, G.R.; Donahue, E.; Lucas, G.E.; Sheckherd, J.W.

    1996-10-01

    The influence of loading rate and constraint on the effective fracture toughness as a function of temperature [K{sub e}(T)] of the fusion program heat of V-4Cr-4Ti was measured using subsized, three point bend specimens. The constitutive behavior was characterized as a function of temperature and strain rate using small tensile specimens. Data in the literature on this alloy was also analysed to determine the effect of irradiation on K{sub e}(T) and the energy temperature (E-T) curves measured in subsized Charpy V-notch tests. It was found that V-4Cr-4Ti undergoes {open_quotes}normal{close_quotes} stress-controlled cleavage fracture below a temperature marking a sharp ductile-to-brittle transition. The transition temperature is increased by higher loading rates, irradiation hardening and triaxial constraint. Shifts in a reference transition temperature due to higher loading rates and irradiation can be reasonably predicted by a simple equivalent yield stress model. These results also suggest that size and geometry effects, which mediate constraint, can be modeled by combining local critical stressed area {sigma}*/A* fracture criteria with finite element method simulations of crack tip stress fields. The fundamental understanding reflected in these models will be needed to develop K{sub e}(T) curves for a range of loading rates, irradiation conditions, structural size scales and geometries relying (in large part) on small specimen tests. Indeed, it may be possible to develop a master K{sub e}(T) curve-shift method to account for these variables. Such reliable and flexible failure assessment methods are critical to the design and safe operation of defect tolerant vanadium structures.

  12. Sharing Teaching Ideas: Graphing Families of Curves Using Transformations of Reference Graphs

    ERIC Educational Resources Information Center

    Kukla, David

    2007-01-01

    This article provides for a fast extremely accurate approach to graphing functions that is based on learning function reference graphs and then applying algebraic transformations to these reference graphs.

  13. APPEL Masters with Masters #3

    NASA Video Gallery

    Masters with Masters #3 features Mike Hawes, Assoc. Administrator, Office of Independent Program Cost & Evaluation, and Lynn Cline, Deputy Assoc. Administrator for Special Operations Missions, disc...

  14. Master`s Network

    SciTech Connect

    Myers, R.E.; Riley, S.C.

    1994-12-31

    A state-wide network for Mathematics And Science Teaching Excellence Through Resources, Renewal, and Services, MASTER{sup 3}S Network is a grant-supported project designed to provide a comprehensive teacher support system for enhancing MST industry representatives, and MST professional system for enhancing MST industry representatives, and MST professional societies, a unique feature in the broad alliance of organizations involved. Made up of three inter-related projects, MASTER{sup 3}S facilitates the provision of resources, services, and opportunities for renewal for the instructional expert. Project One provides support through expert assistance as a cadre of scientists and engineers volunteer to serve as assistants in the classroom. Project Two provides support in the form of math/science summer courses, plus forums throughout the school year to offer ongoing collegial support. Project Three will soon provide support through information with the development of TROL (Teaching Resources on Line), our catalog database of locally available MST resources. The guiding principle of MASTER3S is the belief that by empowering, supporting and serving the teacher, we can most effectively impact student attitudes toward and achievement in MST subjects.

  15. Centile curves and reference values for height, body mass, body mass index and waist circumference of Peruvian children and adolescents.

    PubMed

    Bustamante, Alcibíades; Freitas, Duarte; Pan, Huiqi; Katzmarzyk, Peter T; Maia, José

    2015-03-01

    This study aimed to provide height, body mass, BMI and waist circumference (WC) growth centile charts for school-children, aged 4-17 years, from central Peru, and to compare Peruvian data with North-American and Argentinean references. The sample consisted of 8753 children and adolescents (4130 boys and 4623 girls) aged 4 to 17 years, from four Peruvian cities: Barranco, La Merced, San Ramón and Junín. Height, body mass and WC were measured according to standardized techniques. Centile curves for height, body mass, BMI and WC were obtained separately for boys and girls using the LMS method. Student t-tests were used to compare mean values. Overall boys have higher median heights than girls, and the 50th percentile for body mass increases curvilinearly from 4 years of age onwards. In boys, the BMI and WC 50th percentiles increase linearly and in girls, the increase presents a curvilinear pattern. Peruvian children are shorter, lighter and have higher BMI than their counterparts in the U.S. and Argentina; in contrast, age and sex-specific WC values are lower. Height, body mass and WC of Peruvian children increased with age and variability was higher at older ages. The growth patterns for height, body mass, BMI and WC among Peruvian children were similar to those observed in North-American and Argentinean peers. PMID:25761169

  16. Centile Curves and Reference Values for Height, Body Mass, Body Mass Index and Waist Circumference of Peruvian Children and Adolescents

    PubMed Central

    Bustamante, Alcibíades; Freitas, Duarte; Pan, Huiqi; Katzmarzyk, Peter T.; Maia, José

    2015-01-01

    This study aimed to provide height, body mass, BMI and waist circumference (WC) growth centile charts for school-children, aged 4–17 years, from central Peru, and to compare Peruvian data with North-American and Argentinean references. The sample consisted of 8753 children and adolescents (4130 boys and 4623 girls) aged 4 to 17 years, from four Peruvian cities: Barranco, La Merced, San Ramón and Junín. Height, body mass and WC were measured according to standardized techniques. Centile curves for height, body mass, BMI and WC were obtained separately for boys and girls using the LMS method. Student t-tests were used to compare mean values. Overall boys have higher median heights than girls, and the 50th percentile for body mass increases curvilinearly from 4 years of age onwards. In boys, the BMI and WC 50th percentiles increase linearly and in girls, the increase presents a curvilinear pattern. Peruvian children are shorter, lighter and have higher BMI than their counterparts in the U.S. and Argentina; in contrast, age and sex-specific WC values are lower. Height, body mass and WC of Peruvian children increased with age and variability was higher at older ages. The growth patterns for height, body mass, BMI and WC among Peruvian children were similar to those observed in North-American and Argentinean peers. PMID:25761169

  17. Is It Time to Change Our Reference Curve for Femur Length? Using the Z-Score to Select the Best Chart in a Chinese Population

    PubMed Central

    Yang, Huixia; Wei, Yumei; Su, Rina; Wang, Chen; Meng, Wenying; Wang, Yongqing; Shang, Lixin; Cai, Zhenyu; Ji, Liping; Wang, Yunfeng; Sun, Ying; Liu, Jiaxiu; Wei, Li; Sun, Yufeng; Zhang, Xueying; Luo, Tianxia; Chen, Haixia; Yu, Lijun

    2016-01-01

    Objective To use Z-scores to compare different charts of femur length (FL) applied to our population with the aim of identifying the most appropriate chart. Methods A retrospective study was conducted in Beijing. Fifteen hospitals in Beijing were chosen as clusters using a systemic cluster sampling method, in which 15,194 pregnant women delivered from June 20th to November 30th, 2013. The measurements of FL in the second and third trimester were recorded, as well as the last measurement obtained before delivery. Based on the inclusion and exclusion criteria, we identified FL measurements from 19996 ultrasounds from 7194 patients between 11 and 42 weeks gestation. The FL data were then transformed into Z-scores that were calculated using three series of reference equations obtained from three reports: Leung TN, Pang MW et al (2008); Chitty LS, Altman DG et al (1994); and Papageorghiou AT et al (2014). Each Z-score distribution was presented as the mean and standard deviation (SD). Skewness and kurtosis and were compared with the standard normal distribution using the Kolmogorov-Smirnov test. The histogram of their distributions was superimposed on the non-skewed standard normal curve (mean = 0, SD = 1) to provide a direct visual impression. Finally, the sensitivity and specificity of each reference chart for identifying fetuses <5th or >95th percentile (based on the observed distribution of Z-scores) were calculated. The Youden index was also listed. A scatter diagram with the 5th, 50th, and 95th percentile curves calculated from and superimposed on each reference chart was presented to provide a visual impression. Results The three Z-score distribution curves appeared to be normal, but none of them matched the expected standard normal distribution. In our study, the Papageorghiou reference curve provided the best results, with a sensitivity of 100% for identifying fetuses with measurements < 5th and > 95th percentile, and specificities of 99.9% and 81

  18. Optimization of supervised cluster analysis for extracting reference tissue input curves in (R)-[11C]PK11195 brain PET studies

    PubMed Central

    Yaqub, Maqsood; van Berckel, Bart NM; Schuitemaker, Alie; Hinz, Rainer; Turkheimer, Federico E; Tomasi, Giampaolo; Lammertsma, Adriaan A; Boellaard, Ronald

    2012-01-01

    Performance of two supervised cluster analysis (SVCA) algorithms for extracting reference tissue curves was evaluated to improve quantification of dynamic (R)-[11C]PK11195 brain positron emission tomography (PET) studies. Reference tissues were extracted from images using both a manually defined cerebellum and SVCA algorithms based on either four (SVCA4) or six (SVCA6) kinetic classes. Data from controls, mild cognitive impairment patients, and patients with Alzheimer's disease were analyzed using various kinetic models including plasma input, the simplified reference tissue model (RPM) and RPM with vascular correction (RPMVb). In all subject groups, SVCA-based reference tissue curves showed lower blood volume fractions (Vb) and volume of distributions than those based on cerebellum time-activity curve. Probably resulting from the presence of specific signal from the vessel walls that contains in normal condition a significant concentration of the 18 kDa translocation protein. Best contrast between subject groups was seen using SVCA4-based reference tissues as the result of a lower number of kinetic classes and the prior removal of extracerebral tissues. In addition, incorporation of Vb in RPM improved both parametric images and binding potential contrast between groups. Incorporation of Vb within RPM, together with SVCA4, appears to be the method of choice for analyzing cerebral (R)-[11C]PK11195 neurodegeneration studies. PMID:22588187

  19. Disaster Master

    MedlinePlus

    ... levels. But watch out! The wrong choice could end the game. Survive all 7 levels plus a turn in the hot seat and become a Disaster Master! Print ... 6 - Tsunami/Earthquake Level 7: Thunderstorm/Lightning ...

  20. (Depth-dose curves of the beta reference fields (147)Pm, (85)Kr and (90)Sr/(90)Y produced by the beta secondary standard BSS2.

    PubMed

    Brunzendorf, Jens

    2012-08-01

    The most common reference fields in beta dosimetry are the ISO 6980 series 1 radiation fields produced by the beta secondary standard BSS2 and its predecessor BSS. These reference fields require sealed beta radiation sources ((147)Pm, (85)Kr or (90)Sr/(90)Y) in combination with a source-specific beam-flattening filter, and are defined only at a given distance from the source. Every radiation sources shipped with the BSS2 is sold with a calibration certificate of the Physikalisch-Technische Bundesanstalt. The calibration workflow also comprises regular depth-dose measurements. This work publishes complete depth-dose curves of the series 1 sources (147)Pm, (85)Kr and (90)Sr/(90)Y in ICRU tissue up to a depth of 11 mm,when all electrons are stopped. For this purpose, the individual depth-dose curves of all BSS2 sources calibrated so far have been determined, i.e. the complete datasets of all BSS2 beta sources have been re-evaluated. It includes 191 depth-dose curves of 116 different sources comprising more than 2200 data points in total. Appropriate analytical representations of the nuclide-specific depth-dose curves are provided for the first time. PMID:22267274

  1. Impact of Professional Development on Preschool Teachers' Print References during Shared Read Alouds: A Latent Growth Curve Analysis

    ERIC Educational Resources Information Center

    Piasta, Shayne B.; Dynia, Jaclyn M.; Justice, Laura M.; Pentimonti, Jill M.; Kaderavek, Joan N.; Schatschneider, Christopher

    2010-01-01

    This large-scale, experimental study aimed to (a) describe the extent to which teachers of preschool children at risk for reading difficulties make references to print during whole-class, shared-book read alouds and (b) empirically test the extent to which participation in professional development influences teachers' frequency of references to…

  2. ASSESSING ECOLOGICAL DEGRADATION USING MULTIPLE LINES OF EVIDENCE: REFERENCE CONDITION, STRESSOR-RESPONSE CURVES, AND PROFESSIONAL JUDGEMENT

    EPA Science Inventory

    Typically, when establishing a biological criterion, the distribution of biological metric values over minimally-impacted reference sites is examined, and from this distribution, an appropriate threshold value for the biological criterion is selected. Master Teacher

    ERIC Educational Resources Information Center

    Miranda, Maria Eugenia

    2011-01-01

    Dr. Carole Berotte Joseph, the new president of Bronx Community College, or BCC, has been training to lead an institution of higher education since grade school, taking on the role of master teacher since she played on her parents' stoop with the neighborhood children in Brooklyn. Growing up, she didn't play with dolls much. She played with real…

  3. Bradford Curves.

    ERIC Educational Resources Information Center

    Rousseau, Ronald

    1994-01-01

    Discussion of informetric distributions shows that generalized Leimkuhler functions give proper fits to a large variety of Bradford curves, including those exhibiting a Groos droop or a rising tail. The Kolmogorov-Smirnov test is used to test goodness of fit, and least-square fits are compared with Egghe's method. (Contains 53 references.) (LRW)

  4. Master external pressure charts

    SciTech Connect

    Michalopoulos, E.

    1996-12-01

    This paper presents a method to develop master external pressure charts from which individual external pressure charts for each material specification may be derived. The master external charts can represent a grouping of materials with similar chemical composition, similar stress-strain curves but produced to different strength levels. External pressure charts are used by various Sections of the ASME Boiler and Pressure Vessel and Piping Codes to design various components such as cylinders, sphered, formed heads, tubes, piping, rings and other components, subjected to external pressure or axial compression loads. These charts are pseudo stress-strain curves for groups of materials with similar stress-strain shapes. The traditional approach was originally developed in the 1940`s and is a graphical approach where slopes to the strain curves are drawn graphically from which pseudo-strain levels are calculated. The new method presented in this paper develops mathematical relationships for the material stress-strain curves and the external pressure charts. The method has the ability to calculate stress-strain curves from existing external pressure charts. The relationships are a function of temperature, the modulus of elasticity, yield strength, and two empirical material constants. In this approach, conservative assumptions used to assign materials to lower bound external pressure charts can be removed. This increases the buckling strength capability of many materials in the Code, providing economic benefits while maintaining the margin of safety specified by the Code criteria. The method can also reduce the number of material charts needed in the Code and provides for the capability to extend the existing pressure charts to higher design temperatures. The new method is shown to contain a number of improvements over the traditional approach and is presently under consideration by appropriate ASME Code committees.

  5. Dual arm master controller concept

    SciTech Connect

    Kuban, D.P.; Perkins, G.S.

    1984-01-01

    The Advanced Servomanipulator (ASM) slave was designed with an anthropomorphic stance, gear/torque tube power drives, and modular construction. These features resulted in increased inertia, friction, and backlash relative to tape-driven manipulators. Studies were performed which addressed the human factors design and performance trade-offs associated with the corresponding master controller best suited for the ASM. The results of these studies, as well as the conceptual design of the dual arm master controller, are presented. 6 references, 3 figures.

  6. Fat and lean BMI reference curves in children and adolescents and their utility in identifying excess adiposity compared with BMI and percentage body fat1234

    PubMed Central

    Weber, David R; Moore, Reneé H; Leonard, Mary B

    2013-01-01

    Background: Body mass index (BMI) and percentage body fat (%BF) are widely used to assess adiposity. These indexes fail to account for independent contributions of fat mass (FM) and lean body mass (LBM) to body weight, which vary according to age, sex, pubertal status, and population ancestry in the pediatric population. Objective: The objective was to develop pediatric reference curves for fat mass index (FMI) and lean body mass index (LBMI) and evaluate the effects of population ancestry and LBM on measures of excess adiposity (BMI, %BF, and FMI). Design: Sex-specific FMI and LBMI reference curves relative to age for children and adolescents aged 8–20 y were generated from cross-sectional body-composition data measured by dual-energy X-ray absorptiometry from NHANES. Results: The mean LBMI z score was higher in blacks (males: 0.26; females: 0.45) than in whites (males: −0.07; females: −0.09) and Mexican Americans (males: 0.05; females: −0.09). The positive predictive value of overweight by BMI to identify excess adiposity defined by FMI was lower in blacks (males: 35.9%; females: 30.3%) than in whites (males: 65.4%; females: 52.2%) and Mexican Americans (males: 73.3%; females: 68.3%). Participants classified as having excess adiposity by FMI but normal adiposity by %BF had significantly higher BMI, LBMI, and height z scores than did those classified as having excess adiposity by %BF but normal adiposity by FMI. Conclusions: Relative to FMI, the prevalence of excess adiposity is overestimated by BMI in blacks and underestimated by %BF in individuals with high LBM. The use of FMI and LBMI improves on the use of %BF and BMI by allowing for the independent assessment of FM and LBM. PMID:23697708

  7. 46 CFR Sec. 3 - Master's requirements.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION A-NATIONAL SHIPPING AUTHORITY SLOP CHESTS Sec. 3 Master's requirements. The Master shall: (a) Receive and receipt for the quantities of slop chest items delivered on board. (b) Upon the termination of each voyage complete the Slop Chest Statement referred to...

  8. 46 CFR Sec. 3 - Master's requirements.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION A-NATIONAL SHIPPING AUTHORITY SLOP CHESTS Sec. 3 Master's requirements. The Master shall: (a) Receive and receipt for the quantities of slop chest items delivered on board. (b) Upon the termination of each voyage complete the Slop Chest Statement referred to...

  9. 46 CFR Sec. 3 - Master's requirements.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION A-NATIONAL SHIPPING AUTHORITY SLOP CHESTS Sec. 3 Master's requirements. The Master shall: (a) Receive and receipt for the quantities of slop chest items delivered on board. (b) Upon the termination of each voyage complete the Slop Chest Statement referred to...

  10. 46 CFR Sec. 3 - Master's requirements.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION A-NATIONAL SHIPPING AUTHORITY SLOP CHESTS Sec. 3 Master's requirements. The Master shall: (a) Receive and receipt for the quantities of slop chest items delivered on board. (b) Upon the termination of each voyage complete the Slop Chest Statement referred to...

  11. Revised Reference Curves for Bone Mineral Content and Areal Bone Mineral Density According to Age and Sex for Black and Non-Black Children: Results of the Bone Mineral Density in Childhood Study

    PubMed Central

    Kalkwarf, Heidi J.; Gilsanz, Vicente; Lappe, Joan M.; Oberfield, Sharon; Shepherd, John A.; Frederick, Margaret M.; Huang, Xiangke; Lu, Ming; Mahboubi, Soroosh; Hangartner, Thomas; Winer, Karen K.

    2011-01-01

    Context: Deficits in bone acquisition during growth may increase fracture risk. Assessment of bone health during childhood requires appropriate reference values relative to age, sex, and population ancestry to identify bone deficits. Objective: The objective of this study was to provide revised and extended reference curves for bone mineral content (BMC) and areal bone mineral density (aBMD) in children. Design: The Bone Mineral Density in Childhood Study was a multicenter longitudinal study with annual assessments for up to 7 yr. Setting: The study was conducted at five clinical centers in the United States. Participants: Two thousand fourteen healthy children (992 males, 22% African-Americans) aged 5–23 yr participated in the study. Intervention: There were no interventions. Main Outcome Measures: Reference percentiles for BMC and aBMD of the total body, lumbar spine, hip, and forearm were obtained using dual-energy x-ray absorptiometry for Black and non-Black children. Adjustment factors for height status were also calculated. Results: Extended reference curves for BMC and aBMD of the total body, total body less head, lumbar spine, total hip, femoral neck, and forearm for ages 5–20 yr were constructed relative to sex and age for Black and non-Black children. Curves are similar to those previously published for 7–17 year olds. BMC and aBMD values were greater for Black vs. non-Black children at all measurement sites. Conclusions: We provide here dual-energy x-ray absorptiometry reference data on a well-characterized cohort of 2012 children and adolescents. These reference curves provide the most robust reference values for the assessment and monitoring of bone health in children and adolescents in the literature to date. PMID:21917867

  12. Master-Iac Master-Saao OTs

    NASA Astrophysics Data System (ADS)

    Pogrosheva, T.; Vladimirov, V.; Lipunov, V.; Lopez, R. Rebolo; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Balanutsa, P.; Kornilov, V.; Gorbunov, I.; Gress, O.; Shumkov, V.; Ricart, M. Serra; Israelian, G.; Potter, S.; Kniazev, A.

    2016-06-01

    MASTER-IAC auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 20h 58m 16.98s +23d 58m 12.6s on 2016-06-09.03890 UT. The OT unfiltered magnitude is 17.5m (limit 19.4m).

  13. The Skipping Rope Curve

    ERIC Educational Resources Information Center

    Nordmark, Arne; Essen, Hanno

    2007-01-01

    The equilibrium of a flexible inextensible string, or chain, in the centrifugal force field of a rotating reference frame is investigated. It is assumed that the end points are fixed on the rotation axis. The shape of the curve, the skipping rope curve or "troposkien", is given by the Jacobi elliptic function sn. (Contains 3 figures.)

  14. Fracture toughness curve shift method

    SciTech Connect

    Nanstad, R.K.; Sokolov, M.A.; McCabe, D.E.

    1995-10-01

    The purpose of this task is to examine the technical basis for the currently accepted methods for shifting fracture toughness curves to account for irradiation damage, and to work through national codes and standards bodies to revise those methods, if a change is warranted. During this reporting period, data from all the relevant HSSI Programs were acquired and stored in a database and evaluated. The results from that evaluation have been prepared in a draft letter report and are summarized here. A method employing Weibull statistics was applied to analyze fracture toughness properties of unirradiated and irradiated pressure vessel steels. Application of the concept of a master curve for irradiated materials was examined and used to measure shifts of fracture toughness transition curves. It was shown that the maximum likelihood approach gave good estimations of the reference temperature, T{sub o}, determined by rank method and could be used for analyzing of data sets where application of the rank method did not prove to be feasible. It was shown that, on average, the fracture toughness shifts generally exceeded the Charpy 41-J shifts; a linear least-squares fit to the data set yielded a slope of 1.15. The observed dissimilarity was analyzed by taking into account differences in effects of irradiation on Charpy impact and fracture toughness properties. Based on these comparisons, a procedure to adjust Charpy 41-J shifts for achieving a more reliable correlation with the fracture toughness shifts was evaluated. An adjustment consists of multiplying the 41-J energy level by the ratio of unirradiated to irradiated Charpy upper shelves to determine an irradiated transition temperature, and then subtracting the unirradiated transition temperature determined at 41 J. For LUS welds, however, an unirradiated level of 20 J (15 ft-1b) was used for the corresponding adjustment for irradiated material.

  15. Frequency curves

    USGS Publications Warehouse

    Riggs, H.C.

    1968-01-01

    This manual describes graphical and mathematical procedures for preparing frequency curves from samples of hydrologic data. It also discusses the theory of frequency curves, compares advantages of graphical and mathematical fitting, suggests methods of describing graphically defined frequency curves analytically, and emphasizes the correct interpretations of a frequency curve.

  16. MASTER TELEVISION ANTENNA SYSTEM.

    ERIC Educational Resources Information Center

    Rhode Island State Dept. of Education, Providence.

    SPECIFICATIONS FOR THE FURNISHING AND INSTALLATION OF TELEVISION MASTER ANTENNA SYSTEMS FOR SECONDARY AND ELEMENTARY SCHOOLS ARE GIVEN. CONTRACTOR REQUIREMENTS, EQUIPMENT, PERFORMANCE STANDARDS, AND FUNCTIONS ARE DESCRIBED. (MS)

  17. Strength, toughness and R-curve behaviour of SiC whisker-reinforced composite Si3N4 with reference to monolithic Si3N4

    NASA Technical Reports Server (NTRS)

    Choi, S. R.; Salem, J. A.

    1992-01-01

    The flexural strength and fracture toughness of 30 vol pct SiC whisker-reinforced Si3N4 material were determined as a function of temperature from 25 to 1400 C in an air environment. It was found that both strength and toughness of the composite material were almost the same as those of the monolithic counterpart. The room-temperature strength was retained up to 1100 C; however, appreciable strength degradation started at 1200 C and reached a maximum at 1400 C due to stable crack growth. In contrast, the fracture toughness of the two materials was independent of temperature with an average value of 5.66 MPa sq rt m. It was also observed that the composite material exhibited no rising R-curve behavior at room temperature, as was the case for the monolithic material. These results indicate that SiC whisker addition to the Si3N4 matrix did not provide any favorable effects on strength, toughness and R-curve behavior.

  18. MASTER: optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Gress, O.; Lipunov, V.; Buckley, D.; Lopez, R. Rebolo; Serra-Ricart, M.; Gorbovskoy, E.; Popova, E.; Kuvshinov, D.; Kuznetsov, A.; Kornilov, V.; Vlasenko, D.; Gress, O.; Shurpakov, S.; Potter, S.; Kniazev, A.

    2016-07-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 19h 45m 07.47s -20d 07m 20.5s on 2016-07-11.00663 UT. The OT unfiltered magnitude is (limit 18.8m).

  19. MASTER: 2 optical transients

    NASA Astrophysics Data System (ADS)

    Vladimirov, V.; Shumkov, V.; Lipunov, V.; Buckley, D.; Lopez, R. Rebolo; Serra-Ricart, M.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuvshinov, D.; Kuznetsov, A.; Chazov, V.

    2016-08-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 15h 25m 39.43s -70d 22m 45.1s on 2016-08-16.80259 UT. The OT unfiltered magnitude is 17.0m (mlim=17.9m).

  1. Master: 3 OT

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Buckley, D.; Tlatov, A.; Gorbovskoy, E.; Tyurina, N.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Popova, E.; Vlasenko, D.; Shumkov, V.; Potter, S.; Kniazev, A.; Budnev, N.; Gress, O.; Ivanov, K.; Senik, V.; Dormidontov, D.; Parhomenko, A. V.

    2016-08-01

    MASTER-Kislovodsk auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 21h 33m 50.58s +06d 51m 22.5s on 2016-07-27.94690 UT. The OT unfiltered magnitude is 17.8m (limit 18.0m).

  2. MASTER: 3 optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Pogrosheva, T.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Shumkov, V.; Gorbunov, I.; Gress, O.; Kniazev, S. Potter A.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 10h 34m 32.65s -38d 51m 35.3s on 2016-04-15.84756 UT. The OT unfiltered magnitude is 17.5m (limit 19.3m).

  3. MASTER: 6 optical transients

    NASA Astrophysics Data System (ADS)

    Gress, O.; Balanutsa, P.; Vladimirov, V.; Lipunov, V.; Buckley, D.; Tlatov, A.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Shumkov, V.; Kochutina, N.; Potter, S.; Kniazev, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-06-01

    MASTER-IAC auto-detection system (Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L) discovered OT source at (RA, Dec) = 20h 03m 08.64s +02d 34m 10.4s on 2016-06-02.14910 UT with unfiltered m_OT=16.3m (mlim=18.8m).

  4. MASTER optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Shumkov, V.; Gorbovskoy, E.; Lipunov, V.; Buckley, D.; Potter, S.; Rebolo, R.; Serra-Ricart, M.; Israelyan, G.; Tiurina, N.; Kornilov, V.; Gorbunv, I.; Popova, E.; Vladimirov, V.; Kuvshinov, D.; Budnev, N.; Gress, O.; Ivanov, K.

    2016-05-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 15h 31m 05.22s -26d 04m 37.2s on 2016-05-07.99397 UT. The OT unfiltered magnitude is 17.7m (limit 20.0m).

  5. Master Teachers. Fastback 201.

    ERIC Educational Resources Information Center

    Moore, Richard W.

    A nationwide interest in master-teacher plans has arisen as a response to the general malaise in education, but the viability of such plans depends on finding answers to certain crucial problems. Some basic issues must be addressed before master teachers can even be identified: whether a heirarchy of teachers should be established, or prior…

  6. MASTER: bright OTs

    NASA Astrophysics Data System (ADS)

    Gress, O.; Vladimirov, V.; Lipunov, V.; Gorbovskoy, E.; Buckley, D.; Balanutsa, P.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Gorbunov, I.; Vlasenko, D.; Kuvshinov, D.; Popova, E.; Potter, S.; Kotze, M.; Budnev, N.; Poleschuk, V.; Ivanov, K.

    2016-01-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 14h 50m 56.15s -25d 55m 26.9s on 2016-01-27.02773 UT. The OT unfiltered magnitude is 16.3 (limit 18.4m).

  7. Master Console, SMC

    NASA Technical Reports Server (NTRS)

    Paga Marrero, Hector Jose

    2013-01-01

    The Master Console oversees the function of Computer Systems in Firing room 1 (FR1). Master Console Operators, MCOs' for short, are our customer. I was integrated into the System Monitoring and Control (SMC) software team that is under the guidance of David Slaiman, who is the product group lead. I have been brought up to speed with System Monitoring and Control. The initial time spent reading SMC software design description and understanding how it works. The current Firing Room 1 Console Display is a floor layout giving the MCO two essential pieces of information which are Health and Status. When an issue arises, the MCO has to look on the display to find which console is affected and then the MCO must use the Reference designator from the display to manually search for the Portal Workstation (PWS) installed in the console using the hardware map; which is a long process to lookup a PWS if an issue is present. My project is to make the FR1 Console Display easier for the MCO's to pinpoint PWS's without having to lookup additional resources in the process. My project also includes updating Firing Room 1 Console Display to include the F1R Non-Redundant Set. The display does not have good use of space and functionality. PWS numbers were not present in the previous design and are the critical component in efficient understanding and administration of the consoles. Part of the process includes getting feedback from the customer, instead of just emailing them with a question, we made a proposal with changes so they could respond and give us their input; which proved to be an effective method for engaging them. In order to do this I had to use the Display Editor (DE) tool developed by NASA, Paint.Net and Visio. The process I have been using has been Visio to alter the floor layout of Firing Room and take advantage of the white areas, and then I take the altered floor plan into Paint.Net. Once in Paint.Net I put the new floor plan as a background to the standard console

  8. Master equipment list 500 CFM portable exhauster POR-005 skid C

    SciTech Connect

    KRISKOVICH, J.R.

    1999-07-08

    The Master Equipment List (MEL) lists all the major components of the 500 cfm exhauster PORO5. The purpose of this Master Equipment List is to provide basic information and references to other documents for the listed components.

  9. Investing in a master's degree.

    PubMed

    Hodges, L C; Ganchorre, C; Hodges, E A

    1997-10-01

    One of the most important decisions you will ever make is the decision to invest your time and money in a master's degree. It is a big investment and often requires real sacrifice for you and your family. Since this decision is of paramount importance over the life of your career, it should be approached as a major topic to research. The first step in the process is a thorough review of your own goals and career expectations. Once you decide returning to graduate school is right for you, then you must turn your attention to finding the school that meets your goals for specialized study, as well as the location that best suits your lifestyle. A good place to start the search is in the library among a number of up-to-date references on master's nursing programs. A second source is the Internet. To find out more about the school locations, two good sources are the city's chamber of commerce and the Internet. Acquiring a master's degree in nursing will be a challenge, but one that will pay big dividends in your future nursing career. PMID:9384158

  10. Transparency Master: The Annual Aphid Cycle.

    ERIC Educational Resources Information Center

    Sessions, Mary Lynne

    1983-01-01

    Aphids, often referred to as plant lice, can be found in great numbers on stems, leaves, and flowers of many plants. In many cases these organisms are potentially harmful to their plant hosts. Provided is a description of the annual life cycle of the aphid and an accompanying transparency master. (Author/JN)

  11. Acronym master list

    SciTech Connect

    1995-06-01

    This document is a master list of acronyms and other abbreviations that are used by or could be useful to, the personnel at Los Alamos National Laboratory. Many specialized and well-known abbreviations are not included in this list.

  12. Language Master Redux.

    ERIC Educational Resources Information Center

    Sippola, Arne E.

    1997-01-01

    Describes a set of activities and materials using Language Master machines, combined with more traditional listening-while-reading procedures that helped emergent readers grow rapidly in reading ability and motivation to read. (SR)

  13. MASTER HOME ENVIRONMENTALIST PROGRAM

    EPA Science Inventory

    The Master Home Environmentalist (MHE) program is an innovative approach to address issues of indoor pollution, such as molds and biological contaminants that cause allergies and asthma, dust, indoor air pollution (including asbestos, formaldehyde, radon, combustion sources, tob...

  14. The master science teacher

    NASA Astrophysics Data System (ADS)

    Toh, Kok-Aun; Tsoi, Mun-Fie

    2008-11-01

    The dire need of some schools to boost the academic performance of their students inevitably rests with their ability to attract highly qualified teachers. As such, the UK has put in place the Advanced Skills Teacher (AST) scheme, while the US has set the ball rolling in laying down standards for the certification of the master science teacher, to distil the best teachers from this pool of highly qualified science teachers. This article examines some of the practices in the teaching-learning process one would associate with those of master science teachers. It argues for the master science teacher to have a well-developed pedagogical content knowledge rather than be an expert in content knowledge. It argues for the master science teacher to be someone who has moved 'from personal comprehension to preparing for the comprehension of others' (Shulman 1987 Harv. Educ. Rev. 75 1-22).

  15. IDC Integrated Master Plan.

    SciTech Connect

    Clifford, David J.; Harris, James M.

    2014-12-01

    This is the IDC Re-Engineering Phase 2 project Integrated Master Plan (IMP). The IMP presents the major accomplishments planned over time to re-engineer the IDC system. The IMP and the associate Integrated Master Schedule (IMS) are used for planning, scheduling, executing, and tracking the project technical work efforts. REVISIONS Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Re- engineering Project Team Initial delivery M. Harris

  16. MASTER: dwarf nova outburst

    NASA Astrophysics Data System (ADS)

    Popova, E.; Gress, O.; Lipunov, V.; Gabovich, A.; Yurkov, V.; Sergienko, Yu.; Budnev, N.; Ivanov, K.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.

    2016-07-01

    MASTER-Amur auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 05h 00m 02.2s +74d 04m 07.4s on 2016-07-06 16:47:02.264UT with unfiltered(0.2B2+0.8R2 calibrated to USNO B1) m_OT=16.9. The OT is seen on 6 images. There is no minor planet at this place.

  17. ELECTRONIC MASTER SLAVE MANIPULATOR

    DOEpatents

    Goertz, R.C.; Thompson, Wm.M.; Olsen, R.A.

    1958-08-01

    A remote control manipulator is described in which the master and slave arms are electrically connected to produce the desired motions. A response signal is provided in the master unit in order that the operator may sense a feel of the object and may not thereby exert such pressures that would ordinarily damage delicate objects. This apparatus will permit the manipulation of objects at a great distance, that may be viewed over a closed TV circuit, thereby permitting a remote operator to carry out operations in an extremely dangerous area with complete safety.

  18. Soils. Transparency Masters.

    ERIC Educational Resources Information Center

    Clemson Univ., SC. Vocational Education Media Center.

    This document is a collection of 43 overhead transparency masters to be used as teaching aids in a course of study involving soils such as geology, agronomy, hydrology, earth science, or land use study. Some transparencies are in color. Selected titles of transparencies may give the reader a better understanding of the graphic content. Titles are:…

  19. The Change Masters.

    ERIC Educational Resources Information Center

    Kanter, Rosabeth Moss

    1984-01-01

    The change masters are identified as corporate managers who have the resources and the vision to effect an economic renaissance in the United States. Strategies for change should emphasize horizontal as well as vertical communication, and should reward enterprise and innovation at all levels. (JB)

  20. Master Watershed Stewards.

    ERIC Educational Resources Information Center

    Comer, Gary L.

    The Master Watershed Stewards (MWS) Program is a pilot project (developed through the cooperation of the Ohio State University Extension Logan and Hardin County Offices and the Indian Lake Watershed Project) offering the opportunity for communities to get involved at the local level to protect their water quality. The program grew out of the…

  1. Complex master slave interferometry.

    PubMed

    Rivet, Sylvain; Maria, Michael; Bradu, Adrian; Feuchter, Thomas; Leick, Lasse; Podoleanu, Adrian

    2016-02-01

    A general theoretical model is developed to improve the novel Spectral Domain Interferometry method denoted as Master/Slave (MS) Interferometry. In this model, two functions, g and h are introduced to describe the modulation chirp of the channeled spectrum signal due to nonlinearities in the decoding process from wavenumber to time and due to dispersion in the interferometer. The utilization of these two functions brings two major improvements to previous implementations of the MS method. A first improvement consists in reducing the number of channeled spectra necessary to be collected at Master stage. In previous MSI implementation, the number of channeled spectra at the Master stage equated the number of depths where information was selected from at the Slave stage. The paper demonstrates that two experimental channeled spectra only acquired at Master stage suffice to produce A-scans from any number of resolved depths at the Slave stage. A second improvement is the utilization of complex signal processing. Previous MSI implementations discarded the phase. Complex processing of the electrical signal determined by the channeled spectrum allows phase processing that opens several novel avenues. A first consequence of such signal processing is reduction in the random component of the phase without affecting the axial resolution. In previous MSI implementations, phase instabilities were reduced by an average over the wavenumber that led to reduction in the axial resolution. PMID:26906857

  2. The Master Plan Revisited.

    ERIC Educational Resources Information Center

    Mulrooney, Virginia F.

    The State of California, as it seeks to revise the Master Plan for Higher Education, is grappling with circumstances similar to those underpinning the revision of the United States' original Articles of Confederation. The delegates to the 1787 Constitutional Convention had to identify the task before them; determine how the country would be…

  3. William Brickman, Master Teacher

    ERIC Educational Resources Information Center

    Swing, Elizabeth Sherman

    2010-01-01

    In this article, the author shares her encounter and relationship with William Brickman as her master teacher. William Brickman was her professor, her dissertation advisor, her mentor, and her friend. Her pursuit of a Ph.D. in late middle age may have seemed strange to friends, family, and some of her professors, but not to Brickman. She enrolled…

  4. MASTER: 3 optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Gorbovskoy, E.; Buckley, D.; Tiurina, N.; Kornilov, V.; Gress, O.; Kuznetsov, A.; Shumkov, V.; Vladimirov, V.; Gorbunov, I.; Vlasenko, D.; Potter, S.; Kotze, M.; Tlatov, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-02-01

    MASTER-Kislovodsk auto-detection system ( Lipunov et al., 2010 ) discovered OT source at (RA, Dec) = 06h 33m 29.26s +38d 55m 09.2s on 2016-01-30.80899 UT. The OT unfiltered magnitude is 17.3 (the limit is 19.9m).

  5. The Master Science Teacher

    ERIC Educational Resources Information Center

    Toh, Kok-Aun; Tsoi, Mun-Fie

    2008-01-01

    The dire need of some schools to boost the academic performance of their students inevitably rests with their ability to attract highly qualified teachers. As such, the UK has put in place the Advanced Skills Teacher (AST) scheme, while the US has set the ball rolling in laying down standards for the certification of the master science teacher, to…

  6. Master Study: Ceramics

    ERIC Educational Resources Information Center

    Clark, Kelly

    2004-01-01

    In painting and drawing classes, it is typical to ask students to work directly from a master. It is one way to study composition techniques, and to become familiar with classical style firsthand. In museums, easels are set up as artists work, not in an attempt to copy or plagiarize, but in an attempt to be part of history by participating in it.…

  7. "Yes, Master's": A Graduate Degree's Moment in the Age of Higher Education Innovation

    ERIC Educational Resources Information Center

    Gallagher, Sean

    2014-01-01

    Over the past decade, enrollment in professional master's degree programs has grown substantially, and this category has outpaced the overall recent flattening of college enrollment. Today, 5 million more U.S. adults hold a master's degree compared with a decade ago, and in some circles the master's is being referred to as "the…

  8. Mastering the Offset Master. Student's Manual and Instructor's Manual.

    ERIC Educational Resources Information Center

    Snapp, Jane

    Supporting performance objective 78 of the V-TECS (Vocational-Technical Education Consortium of States) Secretarial Catalog, both a set of student materials and an instructor's manual on mastering the offset master are included in this packet. (The packet is the eleventh in a set of fifteen on typewriting--CE 016 920-934.) The student materials…

  9. Master-Iac Master-Saao 2 bright OTs

    NASA Astrophysics Data System (ADS)

    Gress, O.; Pogrosheva, T.; Lipunov, V.; Lopez, R. Rebolo; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Gorbunov, I.; Kuznetsov, A.; Popova, E.; Kuvshinov, D.; Serra-Ricart, M.; Israelian, G.; Potter, S.; Kniazev, A.

    2016-05-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 00h 10m 21.33s +73d 15m 16.5s on 2016-05-24.18141 UT. The OT unfiltered magnitude is 15.7m (limit 18.1m).

  10. What about Master's Students? The Master's Student Persistence Model

    ERIC Educational Resources Information Center

    Cohen, Kristin E.

    2012-01-01

    This study was designed to investigate the factors that affect master's student persistence in the United States. More specifically, this study explored whether the following factors: students' background, institution's, academic, environmental and psychological influences, had a significant effect on whether a master's student persisted and/or…

  11. The master hearing aid.

    PubMed

    Curran, James R; Galster, Jason A

    2013-06-01

    As early as the 1930s the term Master Hearing Aid (MHA) described a device used in the fitting of hearing aids. In their original form, the MHA was a desktop system that allowed for simulated or actual adjustment of hearing aid components that resulted in a changed hearing aid response. Over the years the MHA saw many embodiments and contributed to a number of rationales for the fitting of hearing aids. During these same years, the MHA was viewed by many as an inappropriate means of demonstrating hearing aids; the audio quality of the desktop systems was often superior to the hearing aids themselves. These opinions and the evolution of the MHA have molded the modern perception of hearing aids and the techniques used in the fitting of hearing aids. This article reports on a history of the MHA and its influence on the fitting of hearing aids. PMID:23686682

  12. Masters change, slaves remain.

    PubMed

    Graham, Patricia; Penn, Jill K M; Schedl, Paul

    2003-01-01

    Sex determination offers an opportunity to address many classic questions of developmental biology. In addition, because sex determination evolves rapidly, it offers an opportunity to investigate the evolution of genetic hierarchies. Sex determination in Drosophila melanogaster is controlled by the master regulatory gene, Sex lethal (Sxl). DmSxl controls the alternative splicing of a downstream gene, transformer (tra), which acts with tra2 to control alternative splicing of doublesex (dsx). DmSxl also controls its own splicing, creating an autoregulatory feedback loop that ensures expression of Sxl in females, but not males. A recent paper has shown that in the dipteran Ceratitis capitata later (downstream) steps in the regulatory hierarchy are conserved, while earlier (upstream) steps are not. Cctra is regulated by alternative splicing and apparently controls the alternative splicing of Ccdsx. However, Cctra is not regulated by CcSxl. Instead it appears to autoregulate in a manner similar to the autoregulation seen with DmSxl. PMID:12508274

  13. The Master Hearing Aid

    PubMed Central

    Curran, James R.

    2013-01-01

    As early as the 1930s the term Master Hearing Aid (MHA) described a device used in the fitting of hearing aids. In their original form, the MHA was a desktop system that allowed for simulated or actual adjustment of hearing aid components that resulted in a changed hearing aid response. Over the years the MHA saw many embodiments and contributed to a number of rationales for the fitting of hearing aids. During these same years, the MHA was viewed by many as an inappropriate means of demonstrating hearing aids; the audio quality of the desktop systems was often superior to the hearing aids themselves. These opinions and the evolution of the MHA have molded the modern perception of hearing aids and the techniques used in the fitting of hearing aids. This article reports on a history of the MHA and its influence on the fitting of hearing aids. PMID:23686682

  14. MASTER: bright dwarf nova outburst

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Gress, O.; Lipunov, V.; Lopez, R. Rebolo; Serra-Ricart, M.; Gorbovskoy, E.; Tyurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Popova, E.; Vlasenko, D.; Pogrosheva, T.

    2016-08-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 19h 52m 39.94s +51d 41m 56.4s on 2016-08-06.96659 UT. The OT unfiltered magnitude is 16.9m (limit 19.4m).

  15. MASTER PSN in Sloan galaxy

    NASA Astrophysics Data System (ADS)

    Pogrosheva, T.; Balanutsa, P.; Lipunov, V.; Tiurina, N.; Buckley, D.; Gorbovskoy, E.; Kuznetsov, A.; Vladimirov, V.; Kornilov, V.; Gorbunov, I.; Gress, O.; Kuvshinov, D.; Shumkov, V.; Potter, S.; Kniazev, A.

    2016-07-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 12h 11m 51.82s -02d 35m 27.9s on 2016-07-07.77319 UT. The OT unfiltered magnitude is 17.1m (limit 19.2m).

  16. MASTER: PSN in interacting galaxies

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Gorbovskoy, E.; Lopez, R. Rebolo; Ricart, M. Serra; Israelian, G.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Vladimirov, V.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.

    2016-03-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 14h 27m 18.40s -01d 40m 31.0s on 2016-03-09.06447 UT. The OT unfiltered magnitude is (limit 19.9m).

  17. MASTER-SAAO: optical transients

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Balanutsa, P.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Vladimirov, V.; Potter, S.; Kniazev, A.

    2016-03-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 09h 48m 51.15s -11d 00m 55.0s on 2016-03-01.97924 UT. The OT unfiltered magnitude is (the limit is 19.6m).

  18. MASTER-Net optical transients

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Gorbovskoy, E.; Buckley, D.; Rebolo, R.; Ricart, M. Serra; Israelian, G.; Lodieu, N.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Gorbunov, I.; Vlasenko, D.; Vladimirov, V.; Potter, S.; Kotze, M.

    2016-02-01

    MASTER-SAAO auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 17h 35m 09.92s -61d 59m 41.3s on 2016-01-29.06019 UT. The OT unfiltered magnitude is 15.1m (limit 18.3m).

  19. MASTER-Net: optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Vladimirov, V.; Lipunov, V.; Gorbovskoy, E.; Buckley, D.; Tiurina, N.; Kornilov, V.; Gress, O.; Kuznetsov, A.; Shumkov, V.; Gorbunov, I.; Vlasenko, D.; Kuvshinov, D.; Potter, S.; Kotze, M.; Tlatov, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-02-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 04h 53m 02.87s -49d 21m 28.4s on 2016-02-22.89387 UT. The OT unfiltered magnitude is (the limit is 18.7m).

  20. Investigating sensitivity, specificity, and area under the curve of the Clinical COPD Questionnaire, COPD Assessment Test, and Modified Medical Research Council scale according to GOLD using St George’s Respiratory Questionnaire cutoff 25 (and 20) as reference

    PubMed Central

    Tsiligianni, Ioanna G; Alma, Harma J; de Jong, Corina; Jelusic, Danijel; Wittmann, Michael; Schuler, Michael; Schultz, Konrad; Kollen, Boudewijn J; van der Molen, Thys; Kocks, Janwillem WH

    2016-01-01

    Background In the GOLD (Global initiative for chronic Obstructive Lung Disease) strategy document, the Clinical COPD Questionnaire (CCQ), COPD Assessment Test (CAT), or modified Medical Research Council (mMRC) scale are recommended for the assessment of symptoms using the cutoff points of CCQ ≥1, CAT ≥10, and mMRC scale ≥2 to indicate symptomatic patients. The current study investigates the criterion validity of the CCQ, CAT and mMRC scale based on a reference cutoff point of St George’s Respiratory Questionnaire (SGRQ) ≥25, as suggested by GOLD, following sensitivity and specificity analysis. In addition, areas under the curve (AUCs) of the CCQ, CAT, and mMRC scale were compared using two SGRQ cutoff points (≥25 and ≥20). Materials and methods Two data sets were used: study A, 238 patients from a pulmonary rehabilitation program; and study B, 101 patients from primary care. Receiver-operating characteristic (ROC) curves were used to assess the correspondence between the recommended cutoff points of the questionnaires. Results Sensitivity, specificity, and AUC scores for cutoff point SGRQ ≥25 were: study A, 0.99, 0.43, and 0.96 for CCQ ≥1, 0.92, 0.48, and 0.89 for CAT ≥10, and 0.68, 0.91, and 0.91 for mMRC ≥2; study B, 0.87, 0.77, and 0.9 for CCQ ≥1, 0.76, 0.73, and 0.82 for CAT ≥10, and 0.21, 1, and 0.81 for mMRC ≥2. Sensitivity, specificity, and AUC scores for cutoff point SGRQ ≥20 were: study A, 0.99, 0.73, and 0.99 for CCQ ≥1, 0.91, 0.73, and 0.94 for CAT ≥10, and 0.66, 0.95, and 0.94 for mMRC ≥2; study B, 0.8, 0.89, and 0.89 for CCQ ≥1, 0.69, 0.78, and 0.8 for CAT ≥10, and 0.18, 1, and 0.81 for mMRC ≥2. Conclusion Based on data from these two different samples, this study showed that the suggested cutoff point for the SGRQ (≥25) did not seem to correspond well with the established cutoff points of the CCQ or CAT scales, resulting in low specificity levels. The correspondence with the mMRC scale seemed satisfactory

  1. Curves and Their Properties.

    ERIC Educational Resources Information Center

    Yates, Robert C.

    This volume, a reprinting of a classic first published in 1952, presents detailed discussions of 26 curves or families of curves, and 17 analytic systems of curves. For each curve the author provides a historical note, a sketch or sketches, a description of the curve, a discussion of pertinent facts, and a bibliography. Depending upon the curve,…

  2. Pedagogue of the Dance: The Dancing Master as Educator in the Long Eighteenth Century

    ERIC Educational Resources Information Center

    Bloomfield, Anne; Watts, Ruth

    2008-01-01

    The educational impact of the dancing master is examined within social and cultural contexts including patronage and artistic style. The nature of the dancing master's peripatetic role and lesson content in domestic and private locations is analysed with reference to notational scores, dance treatises and archival sources. The impact on…

  3. Ferment in Business Education: E-Commerce Master's Programs.

    ERIC Educational Resources Information Center

    Durlabhji, Subhash; Fusilier, Marcelline R.

    2002-01-01

    A review of curriculum and course descriptions of 67 Web-based electronic commerce master's programs showed that the number of programs grew 76% over 8 months. More nontechnical than technology-centered courses are offered. Business schools are apparently viewing e-commerce as a completely new discipline. (Contains 26 references.) (SK)

  4. Relative Age Effect in Masters Sports: Replication and Extension

    ERIC Educational Resources Information Center

    Medic, Nikola; Starkes, Janet L.; Weir, Patricia L.; Young, Bradley W.; Grove, J. Robert

    2009-01-01

    The relative age effect refers to the performance-related advantage of being born early in a cohort or selection year. Until recently it was unknown whether the relative age effect generalizes across the lifespan. Medic, Starkes, and Young (2007) reasoned that the 5-year age categories that are widely used in masters-level sports to organize…

  5. Master oscillator stability requirements considerations

    SciTech Connect

    Schwarz, H.; Vancraeynest, J.

    1986-06-24

    This note attempts to point out some ideas about the required stability of the 476 MHz master oscillator, assuming that the phase noise of the oscillator is the only source of noise in the accelerator system.

  6. Hood River Production Master Plan.

    SciTech Connect

    O'Toole, Patty

    1991-07-01

    The Northwest Power Planning Council's 1987 Columbia River Fish and Wildlife Program authorizes the development of artificial production facilities to raise chinook salmon and steelhead for enhancement in the Hood, Umatilla, Walla Walla, Grande Ronde and Imnaha rivers and elsewhere. On February 26, 1991 the Council agreed to disaggregate Hood River from the Northeast Oregon Hatchery Project, and instead, link the Hood River Master Plan (now the Hood River Production Plan) to the Pelton Ladder Project (Pelton Ladder Master Plan 1991).

  7. Standard Mastery Curves and Skew Curves.

    ERIC Educational Resources Information Center

    Warries, Egbert

    The objective of the study is to convince educational researchers of the necessity for "standard mastery curves" for the graphical representation of scores on summative tests for a group of students. Attention is drawn to the study of theoretical and empirical skew curves in education and biology. Use of standard mastery curves and study of skew…

  8. Changing Times: Trials and Tribulations of the Move to Master's Entry-Level Education in Canada.

    ERIC Educational Resources Information Center

    Lall, Alison; Klein, Jennifer; Brown, G. Ted

    2003-01-01

    Describes the historical evolution of Canadian occupational therapy education, outlines issues within occupational therapy that affect increased entry-level training requirements, and discusses benefits and challenges to master's entry-level training. (Contains 61 references.) (Author/JOW)

  9. Analytical drafting curves provide exact equations for plotted data

    NASA Technical Reports Server (NTRS)

    Stewart, R. B.

    1967-01-01

    Analytical drafting curves provide explicit mathematical expressions for any numerical data that appears in the form of graphical plots. The curves each have a reference coordinate axis system indicated on the curve as well as the mathematical equation from which the curve was generated.

  10. Explicit superconic curves.

    PubMed

    Cho, Sunggoo

    2016-09-01

    Conics and Cartesian ovals are extremely important curves in various fields of science. In addition, aspheric curves based on conics are useful in optical design. Superconic curves, recently suggested by Greynolds, are extensions of both conics and Cartesian ovals and have been applied to optical design. However, they are not extensions of aspheric curves based on conics. In this work, we investigate another type of superconic curves. These superconic curves are extensions of not only conics and Cartesian ovals but also aspheric curves based on conics. Moreover, these are represented in explicit form, while Greynolds's superconic curves are in implicit form. PMID:27607506

  11. Master equation based steady-state cluster perturbation theory

    NASA Astrophysics Data System (ADS)

    Nuss, Martin; Dorn, Gerhard; Dorda, Antonius; von der Linden, Wolfgang; Arrigoni, Enrico

    2015-09-01

    A simple and efficient approximation scheme to study electronic transport characteristics of strongly correlated nanodevices, molecular junctions, or heterostructures out of equilibrium is provided by steady-state cluster perturbation theory. In this work, we improve the starting point of this perturbative, nonequilibrium Green's function based method. Specifically, we employ an improved unperturbed (so-called reference) state ρ̂S, constructed as the steady state of a quantum master equation within the Born-Markov approximation. This resulting hybrid method inherits beneficial aspects of both the quantum master equation as well as the nonequilibrium Green's function technique. We benchmark this scheme on two experimentally relevant systems in the single-electron transistor regime: an electron-electron interaction based quantum diode and a triple quantum dot ring junction, which both feature negative differential conductance. The results of this method improve significantly with respect to the plain quantum master equation treatment at modest additional computational cost.

  12. Master/Programmable-Slave Computer

    NASA Technical Reports Server (NTRS)

    Smaistrla, David; Hall, William A.

    1990-01-01

    Unique modular computer features compactness, low power, mass storage of data, multiprocessing, and choice of various input/output modes. Master processor communicates with user via usual keyboard and video display terminal. Coordinates operations of as many as 24 slave processors, each dedicated to different experiment. Each slave circuit card includes slave microprocessor and assortment of input/output circuits for communication with external equipment, with master processor, and with other slave processors. Adaptable to industrial process control with selectable degrees of automatic control, automatic and/or manual monitoring, and manual intervention.

  13. Enhanced Master Controller Unit Tester

    NASA Technical Reports Server (NTRS)

    Benson, Patricia; Johnson, Yvette; Johnson, Brian; Williams, Philip; Burton, Geoffrey; McCoy, Anthony

    2007-01-01

    The Enhanced Master Controller Unit Tester (EMUT) software is a tool for development and testing of software for a master controller (MC) flight computer. The primary function of the EMUT software is to simulate interfaces between the MC computer and external analog and digital circuitry (including other computers) in a rack of equipment to be used in scientific experiments. The simulations span the range of nominal, off-nominal, and erroneous operational conditions, enabling the testing of MC software before all the equipment becomes available.

  14. Mastering the intermediaries.

    PubMed

    Edelman, Benjamin

    2014-06-01

    Almost every retailer looks to Google to refer customers, and it's rare to find a manufacturer whose products aren't sold on Amazon. But these and other big platforms can capture a disproportionate share of the value a company creates: Buy an app on iTunes, and Apple takes 30%. The author presents four strategies to help businesses reduce their dependence on powerful platforms. Exploit the platform's need to be comprehensive. American Airlines' strong coverage of key routes made its presence on the travel website Kayak indispensable to Kayak's value proposition. As a result, AA negotiated a better deal. Identify and discredit discrimination. Public complaints that eBay was giving search prominence to suppliers who advertised on the site forced a reversal of the policy. Create an alternative platform. When MovieTickets was on the verge of dominating phone and online ticketing, Regal Entertainment and two other large theater chains formed Fandango. Deal more directly. People ordering takeout through online platforms like Foodler and GrubHub have often already chosen their restaurant. Restaurants that deal directly can exit the platform. PMID:25051857

  15. El Camino College Master Plan.

    ERIC Educational Resources Information Center

    El Camino Coll., Torrance, CA.

    This document is the educational Master Plan for El Camino Community College District. The purpose of the plan is to develop a research-based document that will be used as a foundation for decisions regarding instructional programs, support services, staffing and facilities. It is intended to serve as the basic foundation for all other plans of…

  16. Masters in veterinary professional studies.

    PubMed

    McGowan, Catherine; Tee, Rebekah

    2015-05-30

    Kate Thompson and Dan Shaw will soon become the first graduates of the University of Liverpool's Postgraduate Masters in Veterinary Professional Studies. Catherine McGowan, director of veterinary postgraduate education, and Rebekah Tee, lecturer in small animal practice, believe that the programme marks a new phase in postgraduate education. PMID:26025722

  17. Master/slave manipulator system

    NASA Technical Reports Server (NTRS)

    Vykukal, H. C.; King, R. F.; Vallotton, W. C.

    1973-01-01

    System capabilities are equivalent to mobility, dexterity, and strength of human arm. Arrangement of torque motor, harmonic drive, and potentiometer combination allows all power and control leads to pass through center of slave with position-transducer arrangement of master, and "stovepipe joint" is incorporated for manipulator applications.

  18. Master-slave micromanipulator method

    SciTech Connect

    Morimoto, A.K.; Kozlowski, D.M.; Charles, S.T.; Spalding, J.A.

    1999-12-14

    A method is disclosed based on precision X-Y stages that are stacked. Attached to arms projecting from each X-Y stage are a set of two axis gimbals. Attached to the gimbals is a rod, which provides motion along the axis of the rod and rotation around its axis. A dual-planar apparatus that provides six degrees of freedom of motion precise to within microns of motion. Precision linear stages along with precision linear motors, encoders, and controls provide a robotics system. The motors can be remotized by incorporating a set of bellows on the motors and can be connected through a computer controller that will allow one to be a master and the other one to be a slave. Position information from the master can be used to control the slave. Forces of interaction of the slave with its environment can be reflected back to the motor control of the master to provide a sense of force sensed by the slave. Forces import onto the master by the operator can be fed back into the control of the slave to reduce the forces required to move it.

  19. McMaster: A Rebuttal

    ERIC Educational Resources Information Center

    Zeidler, E. H.; Mustard, J. F.

    1973-01-01

    A rebuttal to an article by Robert Jensen, Physician, Heal Thyself (Architectural Forum, June 1973) about McMaster University Health Sciences Center in Hamilton, Ontario. The original article attempted to put architecture into its social context and to discuss the values and images to which it should respond. A reply by Mr. Jensen is included.…

  20. Master Plan for Instructional Computing.

    ERIC Educational Resources Information Center

    Jacobs, Alan

    This master plan focuses attention on the roles computers will play in improving the quality of education over the next 5 years in the Maricopa Community College District. Following an executive summary and introductory material, definitions of instructional computing, computer infusion, and levels of software are presented along with assumptions…

  1. Mastering the Vocabulary of Accounting.

    ERIC Educational Resources Information Center

    Tischler, Helene

    Developed for use by students in an introductory accounting course, these learning modules deal with mastering the vocabulary of accounting. Focus of the modules is on vocabulary appearing in the first six chapters of the text, "Accounting Principles" by Niswonger and Fess. Covered in the individual modules are the following topics: discovering…

  2. Master-slave micromanipulator apparatus

    DOEpatents

    Morimoto, A.K.; Kozlowski, D.M.; Charles, S.T.; Spalding, J.A.

    1999-08-31

    An apparatus is disclosed based on precision X-Y stages that are stacked. Attached to arms projecting from each X-Y stage are a set of two axis gimbals. Attached to the gimbals is a rod, which provides motion along the axis of the rod and rotation around its axis. A dual-planar apparatus that provides six degrees of freedom of motion precise to within microns of motion. Precision linear stages along with precision linear motors, encoders, and controls provide a robotics system. The motors can be positioned in a remote location by incorporating a set of bellows on the motors and can be connected through a computer controller that will allow one to be a master and the other one to be a slave. Position information from the master can be used to control the slave. Forces of interaction of the slave with its environment can be reflected back to the motor control of the master to provide a sense of force sensed by the slave. Forces import onto the master by the operator can be fed back into the control of the slave to reduce the forces required to move it. 12 figs.

  3. Master-slave micromanipulator method

    DOEpatents

    Morimoto, Alan K.; Kozlowski, David M.; Charles, Steven T.; Spalding, James A.

    1999-01-01

    A method based on precision X-Y stages that are stacked. Attached to arms projecting from each X-Y stage are a set of two axis gimbals. Attached to the gimbals is a rod, which provides motion along the axis of the rod and rotation around its axis. A dual-planar apparatus that provides six degrees of freedom of motion precise to within microns of motion. Precision linear stages along with precision linear motors, encoders, and controls provide a robotics system. The motors can be remotized by incorporating a set of bellows on the motors and can be connected through a computer controller that will allow one to be a master and the other one to be a slave. Position information from the master can be used to control the slave. Forces of interaction of the slave with its environment can be reflected back to the motor control of the master to provide a sense of force sensed by the slave. Forces import onto the master by the operator can be fed back into the control of the slave to reduce the forces required to move it.

  4. Master-slave micromanipulator apparatus

    DOEpatents

    Morimoto, Alan K.; Kozlowski, David M.; Charles, Steven T.; Spalding, James A.

    1999-01-01

    An apparatus based on precision X-Y stages that are stacked. Attached to arms projecting from each X-Y stage are a set of two axis gimbals. Attached to the gimbals is a rod, which provides motion along the axis of the rod and rotation around its axis. A dual-planar apparatus that provides six degrees of freedom of motion precise to within microns of motion. Precision linear stages along with precision linear motors, encoders, and controls provide a robotics system. The motors can be positioned in a remote location by incorporating a set of bellows on the motors and can be connected through a computer controller that will allow one to be a master and the other one to be a slave. Position information from the master can be used to control the slave. Forces of interaction of the slave with its environment can be reflected back to the motor control of the master to provide a sense of force sensed by the slave. Forces import onto the master by the operator can be fed back into the control of the slave to reduce the forces required to move it.

  5. Reciprocal relations between kinetic curves

    NASA Astrophysics Data System (ADS)

    Yablonsky, G. S.; Gorban, A. N.; Constales, D.; Galvita, V. V.; Marin, G. B.

    2011-01-01

    We study coupled irreversible processes. For linear or linearized kinetics with microreversibility, \\dot{x}=Kx , the kinetic operator K is symmetric in the entropic inner product. This form of Onsager's reciprocal relations implies that the shift in time, exp(Kt), is also a symmetric operator. This generates the reciprocity relations between the kinetic curves. For example, for the Master equation, if we start the process from the i-th pure state and measure the probability pj(t) of the j-th state (j≠i), and, similarly, measure pi(t) for the process, which starts at the j-th pure state, then the ratio of these two probabilities pj(t)/pi(t) is constant in time and coincides with the ratio of the equilibrium probabilities. We study similar and more general reciprocal relations between the kinetic curves. The experimental evidence provided as an example is from the reversible water gas shift reaction over iron oxide catalyst. The experimental data are obtained using Temporal Analysis of Products (TAP) pulse-response studies. These offer excellent confirmation within the experimental error.

  6. Observable Zitterbewegung in curved spacetimes

    NASA Astrophysics Data System (ADS)

    Kobakhidze, Archil; Manning, Adrian; Tureanu, Anca

    2016-06-01

    Zitterbewegung, as it was originally described by Schrödinger, is an unphysical, non-observable effect. We verify whether the effect can be observed in non-inertial reference frames/curved spacetimes, where the ambiguity in defining particle states results in a mixing of positive and negative frequency modes. We explicitly demonstrate that such a mixing is in fact necessary to obtain the correct classical value for a particle's velocity in a uniformly accelerated reference frame, whereas in cosmological spacetime a particle does indeed exhibit Zitterbewegung.

  7. Master equation calculations of cluster formation in supersonic jets

    NASA Astrophysics Data System (ADS)

    Wolf, K.; Kuge, H.-H.; Kleinermanns, K.

    1991-12-01

    The kinetics of cluster formation in supersonic jets is examined by numerical integration of the master equation system. Some general characteristics of cluster kinetics could be formulated. Excellent agreement between experimental curves of p-cresol (H2O)0, 1, 2, 3 formation as function of H2O pressure and the corresponding calculated curves were obtained assuming successive cluster formation. From the kinetic curves, an unambiguous assignment of cluster size was possible which agreed with mass-resolved REMPI measurements. The fit of the rate coefficients shows the formation of p-cresol (H2O)1 to be faster than p-cresol (H2O)2 and p-cresol (H2O)3.

  8. Improved electromechanical master-slave manipulator

    NASA Technical Reports Server (NTRS)

    Forster, G.; Goertz, R.; Grimson, J.; Mingesz, D.; Potts, C.

    1968-01-01

    Electric master-slave manipulator uses force multiplication and allows the operator to remotely control the slave arm. Both the master and slave arms execute seven distinct motions by a specially designed force-reflecting servo having a one to one correspondence between the motion at the master and slave.

  9. MASTER-IAC: first optical transient discovery

    NASA Astrophysics Data System (ADS)

    Lipunov, V.; Rebolo, R.; Serra-Ricart, M.; Gress, O.; Gorbovskoy, E.; Lodieu, N.; Israelian, G.; Suarez-Andres, L.; Kornilov, V.; Tiurina, N.; Balanutsa, P.; Chazov, V.; Budnev, N.; Ivanov, K.; Tlatov, A.; Senik, V.; Dormidontov, D.; Krushinsky, V.; Buckley, D.; Potter, S.; Kniazev, A.; Kotze, M.; Sergienko, Yu.; Yurkov, V.; Gabovich, A.

    2015-06-01

    MASTER OT J205803.49+084458.7 - first OT discovered at MASTER-IAC, Dwarf Nova outburst with Ampl > 3.5 MASTER-IAC was installed at the Observatorio del Teide (Tenerife) at the end of May 2015 MASTER-IAC auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered optical transient at (RA, Dec) = 20h 58m 03.49s +08d 44m 58.7s on 2015-06-13.134 UT.

  10. The CEBAF Master Oscillator and Distribution Remodeling

    SciTech Connect

    Tomasz Plawski, J. Hovater, John Musson, Ramakrishna Bachimanchi

    2009-05-01

    Jefferson Lab's CEBAF accelerator operation requires various frequency references to be distributed along the site. Three signals: 10 MHz, 70 MHz and 499 MHz are synthesized in the Machine Control Center (MCC) while 1427 MHz and 429 MHz are derived from 499 MHz and 70 MHz signals in four separate locations. We are replacing our obsolete 10 MHz, 70 MHz and 499 MHz sources with new sources that will incorporate a GPS receiver to discipline a 10 MHz reference. In addition the MO (Master Oscillator) system will be redundant (duplicate MO) and a third signal source will be used as a system diagnostic. Moreover, the 12 GeV Energy Upgrade for CEBAF accelerator will be adding 80 new RF systems. To support them the distribution of 1427 MHz and 70 MHz signals has to be extended and be able to deliver enough LO (Local Oscillator) and IF (Intermediate Frequency) power to 320 old and 80 new 80 RF systems. This paper discusses the new MO and the drive line extension.

  11. Information Retrieval System for Japanese Standard Disease-Code Master Using XML Web Service

    PubMed Central

    Hatano, Kenji; Ohe, Kazuhiko

    2003-01-01

    Information retrieval system of Japanese Standard Disease-Code Master Using XML Web Service is developed. XML Web Service is a new distributed processing system by standard internet technologies. With seamless remote method invocation of XML Web Service, users are able to get the latest disease code master information from their rich desktop applications or internet web sites, which refer to this service. PMID:14728364

  12. Deformability curve for K18 steel

    SciTech Connect

    Pospiech, J.

    1999-12-01

    The problem of the best utilization of plasticity in plastic working processes of metals, at low resistance to deformation and maximum utilization of capacity of installations has gained great importance, especially in recent years. Determination of plasticity of materials by the method of Kolmogorow is described. Variation of the stress factor for several plastic working processes is also described. Tests to plot the deformability curve (also referred to as reserve of plasticity curve) were selected and proved.

  13. 46 CFR 11.493 - Master (OSV).

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...,600 GRT/3,000 GT is 24 months of total service as mate, chief mate, or master of ocean or near-coastal... served as chief mate. (b) The minimum service required to qualify an applicant for master (OSV) of 1,600 GRT/3,000 GT or more is 24 months of total service as mate, chief mate, or master of ocean or...

  14. MASTER: 5.2mag amplitude OT

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Buckley, D.; Potter, S.; Kniazev, A.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Vladimirov, V.; Gress, O.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Shumkov, V.

    2016-03-01

    MASTER OT J203533.66-260924.0 discovery - possible dwarf nova outburst, Ampl > 5.2mag MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 20h 35m 33.66s -26d 09m 24.0s on 2016-03-12.11795 UT. The OT unfiltered magnitude is 16.8m (the limit is 19.0m).

  15. Master's thesis policies in nursing education.

    PubMed

    May, K M; Holzemer, W L

    1985-01-01

    A telephone survey of 25 schools of nursing with doctoral programs was conducted to inquire about their master's thesis policies. Six programs require a thesis. Sixteen programs provide both thesis and other options, described in the paper. Other policy issues are discussed which include: relation of thesis to faculty research, criteria for serving on a master's thesis committee, and requirements for doctoral admission. Responses to the survey indicate a variety of types and degrees of research experience in master's programs. PMID:2981987

  16. Anodic Polarization Curves Revisited

    ERIC Educational Resources Information Center

    Liu, Yue; Drew, Michael G. B.; Liu, Ying; Liu, Lin

    2013-01-01

    An experiment published in this "Journal" has been revisited and it is found that the curve pattern of the anodic polarization curve for iron repeats itself successively when the potential scan is repeated. It is surprising that this observation has not been reported previously in the literature because it immediately brings into…

  17. Flow-duration curves

    USGS Publications Warehouse

    Searcy, James Kincheon

    1959-01-01

    The flow-duration curve is a cumulative frequency curve that shows the percent of time specified discharges were equaled or exceeded during a given period. It combines in one curve the flow characteristics of a stream throughout the range of discharge, without regard to the sequence of occurrence. If the period upon which the curve is based represents the long-term flow of a stream, the curve may be used to predict the distribution of future flows for water- power, water-supply, and pollution studies. This report shows that differences in geology affect the low-flow ends of flow-duration curves of streams in adjacent basins. Thus, duration curves are useful in appraising the geologic characteristics of drainage basins. A method for adjusting flow-duration curves of short periods to represent long-term conditions is presented. The adjustment is made by correlating the records of a short-term station with those of a long-term station.

  18. Practice Oriented Master's in Optics

    NASA Technical Reports Server (NTRS)

    Dimmock, John O.

    1998-01-01

    The development of an interdisciplinary Masters Program with a concentration in Optics and Photonics Technology has been is described. This program was developed under the U.S. Manufacturing Education and Training Activity of the Technology Reinvestment Project. This development was a collaboration between the University of Alabama in Huntsville (UAH), Alabama A&M University, Northwest Shoals Community College, the NASA Marshall Space Flight Center (MSFC), the U.S. Army Missile Command, Oak Ridge National Laboratory (ORNL), Advanced Optical Systems Inc., Dynetics, Inc., Hughes Danbury Optical Systems, Inc., Nichols Research and Speedring Inc. These organizations as well as the National Institute for Standards and Technology and SCI, Inc. have been participating fully in the design, development and implementation of this program. This goal of the program is to produce highly trained graduates who can also solve practical problems. To this end, the program includes an on-site practicum at a manufacturing location. The broad curriculum of this program emphasizes the fundamentals of optics, optical systems manufacturing and testing, and the principles of design and manufacturing to cost for commercial products. The Master's of Science (MS) in Physics and Master's of Science in Engineering (MSE) in Electrical Engineering Degrees with concentration in Optics and Photonics Technology are offered by the respective UAH academic departments with support from and in consultation with a Steering Committee composed of representatives from each of the participating organizations, and a student representative from UAH. The origins of the programs are described. The curricula of the programs is described. The course outlines of the new courses which were developed for the new curriculum are included. Also included are samples of on-site practicums which the students have been involved in. Also included as attachments are samples of the advertisements, which includes flyers, and

  19. The Master Artisan: A Framework for Master Tradespeople in Australia. Occasional Paper

    ERIC Educational Resources Information Center

    O'Reilly-Briggs, Karen

    2011-01-01

    The author explores the prospect of improving pathways and opportunities for tradespeople in Australia through the introduction of a masters-level qualification. The study investigates the views and opinions of senior industry representatives and professional educators to determine whether the introduction of a master trade or master artisan…

  20. Mechanics of Curved Folds

    NASA Astrophysics Data System (ADS)

    Dias, Marcelo A.; Santangelo, Christian D.

    2011-03-01

    Despite an almost two thousand year history, origami, the art of folding paper, remains a challenge both artistically and scientifically. Traditionally, origami is practiced by folding along straight creases. A whole new set of shapes can be explored, however, if, instead of straight creases, one folds along arbitrary curves. We present a mechanical model for curved fold origami in which the energy of a plastically-deformed crease is balanced by the bending energy of developable regions on either side of the crease. Though geometry requires that a sheet buckle when folded along a closed curve, its shape depends on the elasticity of the sheet. NSF DMR-0846582.

  1. Honors in the Master's: A New Perspective?

    ERIC Educational Resources Information Center

    Van Ginkel, Stan; Van Eijl, Pierre; Pilot, Albert; Zubizarreta, John

    2012-01-01

    In Europe, there is a growing interest in honors education, not only in the bachelor's but also in the master's degree. The Dutch government, for instance, is actively promoting excellence in both bachelor's and master's degrees through honors programs (Siriusteam). Most Dutch universities have honors programs at the bachelor's level or are…

  2. Pupil Master Record System: History and Outlook.

    ERIC Educational Resources Information Center

    Miller, J. J.; Skees, W. D.

    The Montgomery County, Maryland Public Schools, working with Operations Research, Incorporated, developed a Pupil Master File (PLMF). PLMF is one of the several applications included within the Pupil Subsystem of the district's overall computerized School Information System. The PLMF is designed to provide: 1) a master file which enables users to…

  3. MASTER-IAC: Sloan QSO flare

    NASA Astrophysics Data System (ADS)

    Vladimirov, V.; Lipunov, V.; Lopez, R. Rebolo; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Gress, O.; Kuvshinov, D.; Ricart, M. Serra; Israelian, G.; Tlatov, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-06-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 22h 24m 38.99s +10d 57m 29.5s on 2016-06-14.08069 UT. The OT unfiltered magnitude is (the limit is 17.9m).

  4. Evolution of the Masters in Economics

    ERIC Educational Resources Information Center

    McCoy, James P.; Milkman, Martin I.

    2006-01-01

    In this study, the authors update a previous study of terminal master's degree in economics programs to determine whether changes in the inputs or the desired outcomes of master's degree programs have occurred during the decade between the two studies. There are now fewer programs, and there has been a reduction in rigor in terms of degree…

  5. Listening and Learning in a Master Class

    ERIC Educational Resources Information Center

    Hanken, Ingrid Maria

    2015-01-01

    Most higher education institutions offering programmes in music performance organise master classes for their students. It is commonly agreed that master classes offer valuable learning opportunities for the students performing, but what do they offer for students in the audience? In this article, theories of learning by observation as well as…

  6. Measuring Master's Student Engagement

    ERIC Educational Resources Information Center

    O'Dair, Katherine G.

    2012-01-01

    Master's education is the largest segment of graduate education in the United States yet there is a paucity of research about how master's students experience their programs. Empirical research on student engagement--defined as the time and effort students devote to activities that are linked to educational outcomes and what institutions…

  7. MASTER: PSN in PGC858421 and OTs

    NASA Astrophysics Data System (ADS)

    Tiurina, N.; Balanutsa, P.; Lipunov, E. Popova V.; Buckley, D.; Gorbovskoy, E.; Kuznetsov, A.; Kornilov, V.; Vlasenko, D.; Gress, O.; Shurpakov, S.; Potter, S.; Kniazev, A.

    2016-07-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 14h 47m 32.66s -19d 12m 42.1s on 2016-07-09.87385 UT. PSN unfiltered magnitude is (limit 19.8m).

  8. PSN in PGC938372 discovered by MASTER

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Vlasenko, D.; Gress, O.; Ivanov, K.; Porosheva, T.; Podesta, R. C.; Levato, O. H.; Lopez, C.; Podestan, F.; Saffe, C.; Potter, S.

    2016-09-01

    MASTER-IAC auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 05h 07m 27.73s -13d 24m 16.1s on 2016-09-06.23199 UT. The OT unfiltered magnitude is 17.2m (limit 19.4m).

  9. MASTER: bright PSN in NGC 0888

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Buckley, D.; Podesta, R.; Levato, H.; Gorbovskoy, E.; Tyurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Vladimirov, V.; Potter, S.; Kniazev, A.; Budnev, N.; Gress, O.; Ivanov, K.; Lopez, C.; Mallamaci, C.; Lopez, C.; Podesta, F.; Pogrosheva, T.

    2016-08-01

    MASTER-SAAO auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 02h 17m 29.29s -59d 51m 23.9s on 2016-08-23.12639 UT. The OT unfiltered magnitude is (mlim=19.1m).

  10. MASTER: PSN in Lick catalog's galaxy

    NASA Astrophysics Data System (ADS)

    Tiurina, N.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Balanutsa, P.; Shumkov, V.; Kornilov, V.; Kuvshinov, D.; Pogrosheva, T.; Kuznetsov, A.; Vlasenko, D.; Potter, S.; Kniazev, A.; Budnev, N.; Gress, O.; Ivanov, K.

    2016-08-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 04h 20m 32.78s -21d 52m 12.3s on 2016-08-16.03583 UT. The OT unfiltered magnitude is (limit 17.9m).

  11. MASTER-SAAO: bright outbursting OT

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Buckley, D.; Kornilov, V.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Gress, O.; Kuznetsov, A.; Kuvshinov, D.; Vladimirov, V.; Gorbunov, I.; Vlasenko, D.; Popova, E.; Potter, S.; Kniazev, A.; Shurpakov, S.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 21h 29m 20.71s -62d 08m 52.2s on 2016-04-27.985 UT. The OT unfiltered magnitude is 17.3m (the limit is 19.3m).

  12. MASTER-SAAO: 2 dwarf nova outbursts

    NASA Astrophysics Data System (ADS)

    Gorbovskoy, E.; Lipunov, V.; Buckley, D.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Vladimirov, V.; Gress, O.; Ivanov, K.; Gorbunov, I.; Potter, S.; Kniazev, A.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, v.2010, 30L) ) discovered OT source at (RA, Dec) = 16h 43m 39.02s -57d 53m 05.2s on 2016-04-02.89494 UT. The OT unfiltered magnitude is (limit 18.3m).

  13. MASTER-SAAO: 3 optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Vladimirov, V.; Gress, O.; Lipunov, V.; Buckley, D.; Potter, S.; Kniazev, A.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Shumkov, V.

    2016-03-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 15h 31m 18.02s -41d 15m 53.9s on 2016-03-10.07152 UT. The OT unfiltered magnitude is 16.6m (limit 19.9m).

  14. MASTER-SAAO: bright dwarf nova outburstsients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Gress, O.; Shumkov, V.; Shurpakov, S.; Lipunov, V.; Buckley, D.; Kornilov, V.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kuvshinov, D.; Vladimirov, V.; Gorbunov, I.; Vlasenko, D.; Popova, E.; Potter, S.; Kniazev, A.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 11h 28m 14.90s -75d 21m 22.0s on 2016-04-27.86791 UT. The OT unfiltered magnitude is 17.3m (limit 19.3m).

  15. MASTER-SAAO: 6 optical transients

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Gress, O.; Tiurina, N.; Popova, E.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Kornilov, V.; Kuznetsov, A.; Gorbunov, I.; Vladimirov, V.; Kuvshinov, D.; Potter, S.; Kniazev, A.; Shumkov, V.; Shurpakov, S.; Pogrosheva, T.

    2016-05-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 20h 01m 30.53s -10d 07m 36.8s on 2016-05-16.94397 UT with unfiltered m_OT=16.3m (m_lim=18.7m).

  16. MASTER: QSO flare and dwarf novae

    NASA Astrophysics Data System (ADS)

    Malkova, A.; Gorbovskoy, E.; Gress, O.; Vladimirov, V.; Popova, E.; Lipunov, V.; Buckley, D.; Rebolo, R.; Tlatov, A.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Shumkov, V.; Gorbunov, I.; Ricart, M. Serra; Israelian, G.; Kniazev, S. Potter A.; Senik, V.; Parkhomenko, D. Dormidontov A.

    2016-04-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 12h 16m 18.59s +14d 53m 08.9s on 2016-04-14.99251 UT. The OT unfiltered magnitude is 15.8 (limit 18.8m).

  17. MASTER: PSN in IC4754 galaxy

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Kuznetsov, A.; Tiurina, N.; Kornilov, V.; Gress, O.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Popova, E.; Potter, S.; Kniazev, A.

    2016-03-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 18h 44m 01.22s -61d 59m 06.5s on 2016-03-23.01557 UT. The OT unfiltered magnitude is 17.4m (limit 18.6m).

  18. MASTER-IAC: bright dwarf nova outburst

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Lopez, R. Rebolo; Ricart, M. Serra; Israelyan, G.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.

    2016-03-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 19h 38m 08.47s +54d 31m 55.7s on 2016-03-20.19655 UT. The OT unfiltered magnitude is 16.2m (limit 18.9m).

  19. MASTER: bright PSN in PGC024209

    NASA Astrophysics Data System (ADS)

    Vladimirov, V.; Lipunov, V.; Gabovich, A.; Yurkov, V.; Sergienko, Yu.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Gress, O.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Shumkov, V.

    2016-06-01

    MASTEr-Amur auto-detection system Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 discovered OT source at (RA, Dec) = 08h 36m 37.5s +73d 35m 04.8s on 2016-06-04 16:14:44.427UT.

  20. MASTER-SAAO: 2 dwarf nova outbursts

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Gress, O.; Lipunov, V.; Buckley, D.; Potter, S.; Kniazev, A.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Vladimirov, V.; Vlasenko, D.; Gorbunov, I.; Popova, E.; Kuvshinov, D.

    2016-03-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 12h 27m 39.45s -40d 22m 19.8s on 2016-03-16.91904 UT. The OT unfiltered magnitude is (limit 19.8m).

  1. MASTER-SAAO: bright optical transients

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Pogrosheva, T.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Gress, O.; Popova, E.; Kniazev, S. Potter A.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 18h 45m 36.01s -47d 02m 22.5s on 2016-04-18.02170 UT. The OT unfiltered magnitude is (limit 18.9m).

  2. MASTER: PSN in bright barred IC 0983

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Lopez, R. Rebolo; Ricart, M. Serra; Israelian, G.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Gress, O.; Vladimirov, V.; Vlasenko, D.; Kuvshinov, D.; Popova, E.

    2016-04-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, vol. 2010, 30L ) discovered OT source at (RA, Dec) = 14h 09m 58.91s +17d 45m 49.4s on 2016-04-24.06727 UT. The OT unfiltered magnitude is (the limit is 18.7m).

  3. Master's Degree Studies: Expectations versus Reality

    ERIC Educational Resources Information Center

    Swanepoel, C. H.

    2010-01-01

    During the past two decades, higher education in South Africa has been affected drastically by transformation. An issue that has specifically been influenced is master's degrees. A significant increase in the demand for access to course work master's degrees has been experienced, while universities themselves have been confronted with a new…

  4. Researching Research in Master's Degrees in Europe

    ERIC Educational Resources Information Center

    Sin, Cristina

    2012-01-01

    The research dimension of higher education programmes is usually discussed in association with doctoral studies. Against a background of scarce literature investigating research in a Master's degree, this article aims to analyse the place of research in Master's qualifications, first, as envisaged by official European and national documents acting…

  5. K-12 Master Plan: Starting the Process.

    ERIC Educational Resources Information Center

    Warren, Paul

    This Legislative Analyst's Office (LAO) report was designed to assist the California legislature in developing a long-term state strategy--or master plan--for improving the state's K-12 education system. A K-12 master plan would serve two purposes. In developing the plan, the legislature would create a forum to review the state's existing…

  6. MASTER-Kislovodsk: bright high amplitude OT

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Gress, O.; Kuznetsov, A.; Gorbunov, I.; Vlasenko, D.; Vladimirov, V.; Tlatov, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-02-01

    MASTER-Kislovodsk auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 08h 41m 40.94s +72d 27m 32.6s on 2016-02-22.89248 UT. The OT unfiltered magnitude is . The OT is seen in 3 images.

  7. MASTER: possible Nova in M31

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Gorbovskoy, E.; Rebolo, R.; Serra-Ricart, M.; Israelian, G.; Lodieu, N.; Tiurina, N.; Balanutsa, P.; Gress, O.; Kornilov, V.; Kuznetsov, A.; Gorbunov, I.; Vlasenko, D.; Vladimirov, V.; Kuvshinov, D.; Popova, E.

    2016-01-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 00h 45m 14.13s +42d 00m 07.2s on 2016-01-28.81439 UT. The OT unfiltered magnitude is 16.6m (limit 19.2m).

  8. MASTER-Net: PSN and 3 OTs

    NASA Astrophysics Data System (ADS)

    Gorbovskoy, E.; Balanutsa, P.; Lipunov, V.; Lopez, R. Rebolo; Ricart, M. Serra; Buckley, D.; Israelian, G.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Gress, O.; Shumkov, V.; Gorbunov, I.; Vlasenko, D.; Vladimirov, V.; Popova, E.; Potter, S.; Kotze, M.; Tlatov, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-02-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 16h 33m 55.46s +86d 08m 30.4s on 2016-02-13.88456 UT. The OT unfiltered magnitude is (limit 18.6m).

  9. 46 CFR 11.493 - Master (OSV).

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Master (OSV). 11.493 Section 11.493 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MERCHANT MARINE OFFICERS AND SEAMEN REQUIREMENTS FOR OFFICER ENDORSEMENTS Professional Requirements for Deck Officers § 11.493 Master (OSV). (a) Except as provided by paragraph (b)...

  10. 46 CFR 11.493 - Master (OSV).

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Master (OSV). 11.493 Section 11.493 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MERCHANT MARINE OFFICERS AND SEAMEN REQUIREMENTS FOR OFFICER ENDORSEMENTS Professional Requirements for Deck Officers § 11.493 Master (OSV). (a) Except as provided by paragraph (b)...

  11. Cabrillo College Master Plan, 2001-2004.

    ERIC Educational Resources Information Center

    Cabrillo Coll., Aptos, CA. Office of Institutional Research.

    This document presents Cabrillo College's (California) master plan for 2001 to 2004. Major steps in compiling the master plan included: conducting environmental scanning, making planning assumptions, establishing goals, identifying objectives, developing strategies, and evaluating the plan. The plan is based on six broad goals: (1) to enable…

  12. A way to the Photo Master Expert

    NASA Astrophysics Data System (ADS)

    Inagaki, Toshihiko

    After the author presided over the photographer's group for 15 years or more, the author met with the Photo Master certificate examination. And the author took the certificate examination, and was authorized as a Photo Master Expert in 2005. In this report, the outline how photographic technology has been mastered in order to adapt the photographer's group to the great change of photography from film to digital and how the contents of the activity of a photographer's group have changed is described. And the progress which took the Photo Master certificate examination as a good opportunity to prove the achievement level of those activities is described. And as a photographic activity after Photo Master Expert authorization, the shooting method of mural painting in the royal tomb of Amenophis III is described.

  13. Curve Stitching in LOGO.

    ERIC Educational Resources Information Center

    Muscat, Jean-Paul

    1992-01-01

    Uses LOGO to enhance the applicability of curve stitching in the mathematics curriculum. Presents the formulas and computer programs for the construction of parabolas, concentric circles, and epicycloids. Diagrams of constructed figures are provided. (MDH)

  14. Reference Assessment

    ERIC Educational Resources Information Center

    Bivens-Tatum, Wayne

    2006-01-01

    This article presents interesting articles that explore several different areas of reference assessment, including practical case studies and theoretical articles that address a range of issues such as librarian behavior, patron satisfaction, virtual reference, or evaluation design. They include: (1) "Evaluating the Quality of a Chat Service"…

  15. Reference Services.

    ERIC Educational Resources Information Center

    Bunge, Charles A.

    1999-01-01

    Discusses library reference services. Topics include the historical development of reference services; instruction in library use, particularly in college and university libraries; guidance; information and referral services and how they differ from traditional question-answering service; and future concerns, including user fees and the planning…

  16. Highly curved microchannel plates

    NASA Technical Reports Server (NTRS)

    Siegmund, O. H. W.; Cully, S.; Warren, J.; Gaines, G. A.; Priedhorsky, W.; Bloch, J.

    1990-01-01

    Several spherically curved microchannel plate (MCP) stack configurations were studied as part of an ongoing astrophysical detector development program, and as part of the development of the ALEXIS satellite payload. MCP pairs with surface radii of curvature as small as 7 cm, and diameters up to 46 mm have been evaluated. The experiments show that the gain (greater than 1.5 x 10 exp 7) and background characteristics (about 0.5 events/sq cm per sec) of highly curved MCP stacks are in general equivalent to the performance achieved with flat MCP stacks of similar configuration. However, gain variations across the curved MCP's due to variations in the channel length to diameter ratio are observed. The overall pulse height distribution of a highly curved surface MCP stack (greater than 50 percent FWHM) is thus broader than its flat counterpart (less than 30 percent). Preconditioning of curved MCP stacks gives comparable results to flat MCP stacks, but it also decreases the overall gain variations. Flat fields of curved MCP stacks have the same general characteristics as flat MCP stacks.

  17. Master Limited Partnerships Parity Act

    THOMAS, 112th Congress

    Sen. Coons, Christopher A. [D-DE

    2012-06-07

    06/07/2012 Read twice and referred to the Committee on Finance. (text of measure as introduced: CR S3842) (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  18. STEM Master Teacher Corps Act

    THOMAS, 112th Congress

    Rep. Bishop, Timothy H. [D-NY-1

    2011-07-20

    09/08/2011 Referred to the Subcommittee on Early Childhood, Elementary, and Secondary Education. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  19. Solid-state curved focal plane arrays

    NASA Technical Reports Server (NTRS)

    Nikzad, Shouleh (Inventor); Hoenk, Michael (Inventor); Jones, Todd (Inventor)

    2010-01-01

    The present invention relates to curved focal plane arrays. More specifically, the present invention relates to a system and method for making solid-state curved focal plane arrays from standard and high-purity devices that may be matched to a given optical system. There are two ways to make a curved focal plane arrays starting with the fully fabricated device. One way, is to thin the device and conform it to a curvature. A second way, is to back-illuminate a thick device without making a thinned membrane. The thick device is a special class of devices; for example devices fabricated with high purity silicon. One surface of the device (the non VLSI fabricated surface, also referred to as the back surface) can be polished to form a curved surface.

  20. Modeling Type IIn Supernova Light Curves

    NASA Astrophysics Data System (ADS)

    De La Rosa, Janie; Roming, Peter; Fryer, Chris

    2016-01-01

    We present near-by Type IIn supernovae observed with Swift's Ultraviolet/Optical Telescope (UVOT). Based on the diversity of optical light curve properties, this Type II subclass is commonly referred to as heterogeneous. At the time of discovery, our IIn sample is ~ 2 magnitudes brighter at ultraviolet wavelengths than at optical wavelengths, and ultraviolet brightness decays faster than the optical brightness. We use a semi-analytical supernova (SN) model to better understand our IIn observations, and focus on matching specific observed light curves features, i.e peak luminosity and decay rate. The SN models are used to study the effects of initial SN conditions on early light curves, and to show the extent of the "uniqueness" problem in SN light curves. We gratefully acknowledge the contributions from members of the Swift UVOT team, the NASA astrophysics archival data analysis program, and the NASA Swift guest investigator program.

  1. Reference frames and reference networks

    NASA Astrophysics Data System (ADS)

    Bosy, Jaroslaw; Krynski, Jan

    2015-12-01

    The summary of research activities concerning reference frames and reference networks performed in Poland in a period of 2011-2014 is presented. It contains the results of research on implementation of IUGG2011 and IAU2012 resolutions on reference systems, implementation of the ETRS89 in Poland, operational work of permanent IGS/ EUREF stations in Poland, operational work of ILRS laser ranging station in Poland, active GNSS station networks in Poland, maintenance of vertical control in Poland, maintenance and modernization of gravity control, and maintenance of magnetic control in Poland. The bibliography of the related works is given in references.

  2. On the convergence of planar curves under smoothing.

    PubMed

    Zhong, Baojiang; Ma, Kai-Kuang

    2010-08-01

    Curve smoothing has two important applications in computer vision and image processing: 1) the curvature scale-space (CSS) technique for shape analysis, and 2) the Gaussian filter for noise suppression. In this paper, we study how planar curves converge as they are smoothed with increasing scales. First, two types of convergence behavior are clarified. The coined term shrinkage refers to the reduction of arc-length of a smoothed planar curve, which describes the convergence of the curve latitudinally; and another coined term collapse refers to the movement of each point to its limiting position, which describes the convergence of the curve longitudinally. A systematic study on the shrinkage and collapse of three categories of curve models is then presented. The corner models helps to reveal how the local structures of planar curves collapse and what the smoothed curves may converge to. The sawtooth models allows us to gain insights regarding how noise is suppressed from noisy planar curves by the Gaussian filter. Our investigation on the closed curves shows that each curve collapses to a point at its center of mass. However, different curves may yield different limiting shapes at the infinity scale. Finally, based upon the derived results the performance of the CSS technique in corner detection and shape representation is analyzed, and a fast implementation method of the Gaussian filter for noise suppression is proposed. PMID:20350854

  3. The ACTS NASA Ground Station/Master Control Station

    NASA Technical Reports Server (NTRS)

    Meadows, David N.

    1992-01-01

    Two of the major components of the ACTS Ground Segment are the NASA Ground Station (NGS) and the Master Control Station (MCS), colocated at the NASA Lewis Research Center. Essentially, the NGS provides the communications links by which the MCS performs its various network control and monitoring functions. The NGS also provides telecommunications links capable of transmission/reception of up to approximately 70 Mbit/s of digital telephonic traffic. Operating as a system, the entire complex of equipment is referred to as the NGS/MCS. This paper provides an 'as-built' description of the NGS/MCS as a system.

  4. A Study on the Steering Strategy for the Master Clock

    NASA Astrophysics Data System (ADS)

    Zhao, S. H.; Wang, Z. M.; Yin, D. S.

    2014-07-01

    A physical realization of UTC (Coordinated Universal Time) produced by the master clock system in a time laboratory is named UTC(k). In order to make the deviation of UTC(k) from UTC as small as possible, and keep high short-term and long-term frequency stabilities as well, a new steering algorithm is proposed, and the detailed algorithm is as follows: Firstly, a stable reference time scale (TA) for real-time monitoring UTC(NTSC) is introduced. The time scale algorithm generating TA, which is computed as a weighted average of about 22 free-running atomic clocks at National Time Service Center (NTSC), is based on the ALGOS algorithm. And the weighting procedure has been designed to optimize the short-term frequency stability of the scale. Secondly, the frequency offset is calculated. (1) The frequency of the master clock in the next time interval is calculated; (2) The phase difference between TA and UTC(NTSC) is deducted; (3) The final frequency offset is generated on the basis of above steps. A software is compiled according to this algorithm. The results calculated with the software are sent to the microphase stepper automatically, so that the time signal derived from the steered master clock can be accurate, meanwhile its stability is not influenced. Finally, the test results show that the new master clock steering strategy can control the phase offset within ±{15 ns}, meanwhile it can also improve its short-term stability on the condition that its long-term one is not influenced.

  5. A Study on the Steering Strategy for the Master Clock

    NASA Astrophysics Data System (ADS)

    Zhao, Shu-Hong; Wang, Zheng-Ming; Yin, Dong-Shan

    2015-01-01

    A physical realization of UTC (Coordinated Universal Time) by the master clock system in a time laboratory is named UTC(k). In order to make the deviation of UTC(k) from UTC as small as possible, and keep high short-term and long-term frequency stabilities as well, a new steering algorithm is proposed, and the detailed algorithm is as follows: Firstly, a stable reference time scale (TA) for real-time monitoring UTC(NTSC) is introduced. The time scale algorithm for generating TA, which is computed as a weighted average of about 22 free-running atomic clocks at the National Time Service Center (NTSC), is based on the ALGOS algorithm. And the weighting procedure is designed to optimize the short-term frequency stability of the scale. Secondly, the frequency offset is calculated. (1) The frequency of the master clock in the next time interval is calculated; (2) The phase difference between TA and UTC(NTSC) is deducted; (3) The final frequency offset is generated on the basis of above steps. A software is compiled according to this algorithm. The results calculated with the software are sent to the microphase stepper automatically, so that the time signal derived from the steered master clock can be accurate, meanwhile its stability is not influenced. Finally, the experimental result shows that the new master clock steering strategy can control the phase offset within ±15 ns, meanwhile it can also improve its short-term stability on the condition that its long-term one is not influenced.

  6. Practice Oriented Master's in Optics

    NASA Technical Reports Server (NTRS)

    Dimmock, John O.

    1996-01-01

    This award provides support for the development and initial implementation of an interdisciplinary Master's Program with a concentration in Optics and Photonics Technology. This program is a collaboration between the University of Alabama in Huntsville, Alabama A and M University, Northwest Shoals Community College, the NASA Marshall Space Flight Center, the U.S. Army Missile Command, Oak Ridge National Laboratory, the National Institute for Standards and Technology, Advanced Optical Systems Inc., Dynetics, Inc., Hughes Danbury Optical Systems, Inc., Nichols Research Corp., SCI Inc., and Speedring Inc. These organizations have been participating fully in the design, development and implementation of the program. This program is directed at both traditional students as well as government and defense workers who desire specialty education in practical optics and optical systems design and manufacturing. It is intended to produce highly trained graduates who can solve practical problems, and includes an on-site practicum at a manufacturing location. The broad curriculum of this program emphasizes the fundamentals of optics, optical systems manufacturing and testing, and the principles of design and manufacturing-to-cost for commercial optical products. The degrees offered are the MS in Physics and the MSE in Electrical Engineering with concentration in Optics and Photonics Technology through the Physics and Electrical and Computer Engineering departments of UAH with support from and in consultation with the Steering Committee composed of representatives from each of the participating organizations plus a student representative.

  7. Practice Oriented Master's in Optics

    NASA Technical Reports Server (NTRS)

    Dimmock, John O.

    1997-01-01

    This award provides support for the development and initial implementation of an interdisciplinary Master's Program with a concentration in Optics and Photonics Technology. This program is a collaboration between the University of Alabama in Huntsville, Alabama A&M University, Northwest Shoals Community College, the NASA Marshall Space Flight Center, the U. S. Army Missile Command, Oak Ridge National Laboratory, the National Institute for Standards and Technology, Advanced Optical Systems Inc., Dynetics, Inc., Hughes Danbury Optical Systems, Inc., Nichols Research Corp., SCI Inc., and Speedring Inc. These organizations have been participating fully in the design, development and implementation of the program. This program is directed at both traditional students as well as government and defense workers who desire specialty education in practical optics and optical systems design and manufacturing. It is intended to produce highly trained graduates who can solve practical problems, and includes an on-site practicum at a manufacturing location. The broad curriculum of this program emphasizes the fundamentals of optics, optical systems manufacturing and testing, and the principles of design and manufacturing-to-cost for commercial optical products. The degrees offered are the MS in Physics and the MSE in Electrical Engineering with concentration in Optics and Photonics Technology through the Physics and Electrical and Computer Engineering departments of UAH with support from and in consultation with the Steering Committee composed of representatives from each of the participating organizations plus a student representative.

  8. Ready Reference.

    ERIC Educational Resources Information Center

    Koltay, Emery

    1999-01-01

    Includes the following ready reference information: "Publishers' Toll-Free Telephone Numbers"; "How to Obtain an ISBN (International Standard Book Number)"; "How to Obtain an ISSN (International Standard Serial Number)"; and "How to Obtain an SAN (Standard Address Number)". (AEF)

  9. GRB Prompt Optical Observations by Master and Lomonosov

    NASA Astrophysics Data System (ADS)

    Gorbovskoy, Evgeny

    We present the results of the prompt, early and afterglow optical observations of five γ-ray bursts (GRBs): GRB 100901A, GRB 100902A, GRB 100905A, GRB 100906A and GRB 101020A. These observations were made with the Mobile Astronomical System of TElescope-Robots in Russia (MASTER-II Net), the 1.5-m telescope of the Sierra Nevada Observatory and the 2.56-m Nordic Optical Telescope. For two sources, GRB 100901A and GRB 100906A, we detected optical counterparts and obtained light curves starting before the cessation of γ-ray emission, at 113 and 48 s after the trigger, respectively. Observations of GRB 100906A were conducted in two polarizing filters. Observations of the other three bursts gave the upper limits on the optical flux; their properties are briefly discussed. A more detailed analysis of GRB 100901A and GRB 100906A, supplemented by Swift data, provides the following results and indicates different origins for the prompt optical radiation in the two bursts. The light-curve patterns and spectral distributions suggest that there is a common production site for the prompt optical and high-energy emission in GRB 100901A. The results of the spectral fits for GRB 100901A in the range from optical to X-ray favour power-law energy distributions and a consistent value of the optical extinction in the host galaxy. GRB 100906A produced a smoothly peaking optical light curve, suggesting that the prompt optical radiation in this GRB originated in a front shock. This is supported by a spectral analysis. We have found that the Amati and Ghirlanda relations are satisfied for GRB 100906A. We obtain an upper limit on the value of the optical extinction on the host of GRB 100906A. Also we consider prompt observation of dark gamma ray bursts for which on very widefield cameras MASTER-VWF and MASTER-II telescopes upper limits were received. We represent SHOCK experiment onboard the spacecraft Lomonosov.

  10. Anthropomorphic master/slave manipulator system

    NASA Technical Reports Server (NTRS)

    Vykukal, H. C.; King, R. F.; Vallotton, W. C. (Inventor)

    1977-01-01

    An anthropomorphic master/slave manipulator system including master arm apparatus with a plurality of master tubular articulated portions is outlined. Objectives of this investion were to provide a system that accurately and smoothly simulates human limb movement at a remote location. The system has a high frequency response, a high structural stiffness and a design that protects the components of the slave mechanism. Simulation of human movements is possible in outer space, underwater, and in a hazardous environment such as in a high radiation area. The equivalent ability, dexterity, and strength of a human arm are simulated.

  11. Second Line of Defense Master Spares Catalog

    SciTech Connect

    Henderson, Dale L.; Muller, George; Mercier, Theresa M.; Brigantic, Robert T.; Perkins, Casey J.; Cooley, Scott K.

    2012-11-20

    This catalog is intended to be a comprehensive listing of repair parts, components, kits, and consumable items used on the equipment deployed at SLD sites worldwide. The catalog covers detection, CAS, network, ancillary equipment, and tools. The catalog is backed by a Master Parts Database which is used to generate the standard report views of the catalog. The master parts database is a relational database containing a record for every part in the master parts catalog along with supporting tables for normalizing fields in the records. The database also includes supporting queries, database maintenance forms, and reports.

  12. IGMtransmission: Transmission curve computation

    NASA Astrophysics Data System (ADS)

    Harrison, Christopher M.; Meiksin, Avery; Stock, David

    2015-04-01

    IGMtransmission is a Java graphical user interface that implements Monte Carlo simulations to compute the corrections to colors of high-redshift galaxies due to intergalactic attenuation based on current models of the Intergalactic Medium. The effects of absorption due to neutral hydrogen are considered, with particular attention to the stochastic effects of Lyman Limit Systems. Attenuation curves are produced, as well as colors for a wide range of filter responses and model galaxy spectra. Photometric filters are included for the Hubble Space Telescope, the Keck telescope, the Mt. Palomar 200-inch, the SUBARU telescope and UKIRT; alternative filter response curves and spectra may be readily uploaded.

  13. Mastering the Intangible Through Language.

    ERIC Educational Resources Information Center

    Blank, Marion

    In behavioral science research, language has been increasingly seen to reflect the concepts that the child has acquired prior to, and hence independent of, the acquisition of language. Analyses based on this idea are confined largely to words that denote clear perceptual referents. Language, however, contains many terms that have no portrayable…

  14. Rhetorical Functions of Citations in High- and Low-Rated Master's Theses

    ERIC Educational Resources Information Center

    Petric, Bojana

    2007-01-01

    This study compares rhetorical citation functions in eight high- and eight low-graded master's theses in the field of gender studies, written in English as a second language. The following rhetorical functions of citations are identified: attribution, exemplification, further reference, statement of use, application, evaluation, establishing links…

  15. Master Console System Monitoring and Control Development

    NASA Technical Reports Server (NTRS)

    Brooks, Russell A.

    2013-01-01

    The Master Console internship during the spring of 2013 involved the development of firing room displays at the John F. Kennedy Space Center (KSC). This position was with the Master Console Product Group (MCPG) on the Launch Control System (LCS) project. This project is responsible for the System Monitoring and Control (SMC) and Record and Retrieval (R&R) of launch operations data. The Master Console is responsible for: loading the correct software into each of the remaining consoles in the firing room, connecting the proper data paths to and from the launch vehicle and all ground support equipment, and initializing the entire firing room system to begin processing. During my internship, I developed a system health and status display for use by Master Console Operators (MCO) to monitor and verify the integrity of the servers, gateways, network switches, and firewalls used in the firing room.

  16. A Master's Degree Specialization in Gerontological Counseling.

    ERIC Educational Resources Information Center

    Cavallaro, Marion L.

    1992-01-01

    Describes master's level specialization in gerontological counseling. Discusses development of the program, curriculum, and program evaluation. Describes program characteristics, including development of the specialization, features of specialization (coursework, practicum and internship, certificate program), and student recruitment and…

  17. MASTER: PSN in PGC135878 and OTs

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Shumkov, V.; Lipunov, V.; Buckley, D.; Lopez, R. Rebolo; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Gress, O.; Ricart, M. Serra; Israelian, G.; Potter, S.; Kniazev, A.

    2016-06-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 18h 02m 41.87s +09d 03m 12.9s on 2016-06-05.16160 UT. The OT unfiltered magnitude is (limit 19.1m).The OT is seen in 10 images.

  18. MASTER-IAC: PSN in SDSS galaxy

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Lopez, R. Rebolo; Ricart, M. Serra; Israelyan, G.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Vladimirov, V.; Popova, E.

    2016-04-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 13h 27m 13.97s -02d 16m 11.8s on 2016-03-27 23:11:36.387 UT. The OT unfiltered magnitude is 17.5m (limit 19.6m).

  19. Graphing Polar Curves

    ERIC Educational Resources Information Center

    Lawes, Jonathan F.

    2013-01-01

    Graphing polar curves typically involves a combination of three traditional techniques, all of which can be time-consuming and tedious. However, an alternative method--graphing the polar function on a rectangular plane--simplifies graphing, increases student understanding of the polar coordinate system, and reinforces graphing techniques learned…

  20. The Bacterial Growth Curve.

    ERIC Educational Resources Information Center

    Paulton, Richard J. L.

    1991-01-01

    A procedure that allows students to view an entire bacterial growth curve during a two- to three-hour student laboratory period is described. Observations of the lag phase, logarithmic phase, maximum stationary phase, and phase of decline are possible. A nonpathogenic, marine bacterium is used in the investigation. (KR)

  1. Textbook Factor Demand Curves.

    ERIC Educational Resources Information Center

    Davis, Joe C.

    1994-01-01

    Maintains that teachers and textbook graphics follow the same basic pattern in illustrating changes in demand curves when product prices increase. Asserts that the use of computer graphics will enable teachers to be more precise in their graphic presentation of price elasticity. (CFR)

  2. Northeast Oregon Hatchery Spring Chinook Master Plan, Technical Report 2000.

    SciTech Connect

    Ashe, Becky L.; Concannon, Kathleen; Johnson, David B.

    2000-04-01

    Spring chinook salmon populations in the Imnaha and Grande Ronde rivers are listed as threatened under the Endangered Species Act (ESA) and are at high risk of extirpation. The Nez Perce Tribe, the Confederated Tribes of the Umatilla Indian Reservation, and Oregon Department of Fish and Wildlife, are co-managers of conservation/restoration programs for Imnaha and Grande Ronde spring chinook salmon that use hatchery supplementation and conventional and captive broodstock techniques. The immediate goal of these programs is to prevent extirpation and provide the potential for restoration once factors limiting production are addressed. These programs redirect production occurring under the Lower Snake River Compensation Plan (LSRCP) from mitigation to conservation and restoration. Both the Imnaha and Grande Ronde conservation/restoration programs are described in ESA Section 10 permit applications and the co-managers refer to the fish production from these programs as the Currently Permitted Program (CPP). Recently, co-managers have determined that it is impossible to produce the CPP at Lookingglass Hatchery, the LSRCP facility intended for production, and that without additional facilities, production must be cut from these conservation programs. Development of new facilities for these programs through the Columbia Basin Fish and Wildlife Program is considered a new production initiative by the Northwest Power Planning Council (NPPC) and requires a master plan. The master plan provides the NPPC, program proponents and others with the information they need to make sound decisions about whether the proposed facilities to restore salmon populations should move forward to design. This master plan describes alternatives considered to meet the facility needs of the CPP so the conservation program can be fully implemented. Co-managers considered three alternatives: modify Lookingglass Hatchery; use existing facilities elsewhere in the Basin; and use new facilities in

  3. Ready Reference.

    ERIC Educational Resources Information Center

    Koltay, Emery

    2001-01-01

    Includes four articles that relate to ready reference, including a list of publishers' toll-free telephone numbers and Web sites; how to obtain an ISBN (International Standard Book Number) and an ISSN (International Standard Serial Number); and how to obtain an SAN (Standard Address Number), for organizations that are involved in the book…

  4. Poroelastic references

    SciTech Connect

    Morency, Christina

    2014-12-12

    This file contains a list of relevant references on the Biot theory (forward and inverse approaches), the double-porosity and dual-permeability theory, and seismic wave propagation in fracture porous media, in RIS format, to approach seismic monitoring in a complex fractured porous medium such as Brady?s Geothermal Field.

  5. 21 CFR 314.420 - Drug master files.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 5 2010-04-01 2010-04-01 false Drug master files. 314.420 Section 314.420 Food... master files. (a) A drug master file is a submission of information to the Food and Drug Administration by a person (the drug master file holder) who intends it to be used for one of the following...

  6. 19 CFR 10.90 - Master records and metal matrices.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Master records and metal matrices. 10.90 Section... Master Records, and Metal Matrices § 10.90 Master records and metal matrices. (a) Consumption entries... made, of each master record or metal matrix covered thereby. (c) A bond on Customs Form 301,...

  7. Science Professionals: Master's Education for a Competitive World

    ERIC Educational Resources Information Center

    National Academies Press, 2008

    2008-01-01

    What are employer needs for staff trained in the natural sciences at the master's degree level? How do master's level professionals in the natural sciences contribute in the workplace? How do master's programs meet or support educational and career goals? "Science Professionals: Master's Education for a Competitive World" examines the answers to…

  8. Do You Need a New Campus Master Plan?

    ERIC Educational Resources Information Center

    Sturgeon, Julie

    1999-01-01

    Explains why school administrators should review their campus Master Plans every five to 10 years, and highlights guidelines for developing a Master Plan. Three examples are provided of how school administrators succeeded in developing their campus Master Plans as are suggested tips for Master Plan development that can guarantee positive outcomes.…

  9. Guidelines for application of learning/cost improvement curves

    NASA Technical Reports Server (NTRS)

    Delionback, L. M.

    1975-01-01

    The differences between the terms learning curve and improvement curve are noted, as well as the differences between the Wright system and the Crawford system. Learning curve computational techniques were reviewed along with a method to arrive at a composite learning curve for a system given detail curves either by the functional techniques classification or simply categorized by subsystem. Techniques are discussed for determination of the theoretical first unit (TFU) cost using several of the currently accepted methods. Sometimes TFU cost is referred to as simply number one cost. A tabular presentation of the various learning curve slope values is given. A discussion of the various trends in the application of learning/improvement curves and an outlook for the future are presented.

  10. Factorization with genus 2 curves

    NASA Astrophysics Data System (ADS)

    Cosset, Romain

    2010-04-01

    The elliptic curve method (ECM) is one of the best factorization methods available. It is possible to use hyperelliptic curves instead of elliptic curves but it is in theory slower. We use special hyperelliptic curves and Kummer surfaces to reduce the complexity of the algorithm. Our implementation GMP-HECM is faster than GMP-ECM for factoring large numbers.

  11. Atlas of fatigue curves

    SciTech Connect

    Boyer, H.E.

    1986-01-01

    This Atlas was developed to serve engineers who are looking for fatigue data on a particular metal or alloy. Having these curves compiled in a single book will also facilitate the computerization of the involved data. It is pointed out that plans are under way to make the data in this book available in ASCII files for analysis by computer programs. S-N curves which typify effects of major variables are considered along with low-carbon steels, medium-carbon steels, alloy steels, HSLA steels, high-strength alloy steels, heat-resisting steels, stainless steels, maraging steels, cast irons, and heat-resisting alloys. Attention is also given to aluminum alloys, copper alloys, magnesium alloys, molybdenum, tin alloys, titanium and titanium alloys, zirconium, steel castings, closed-die forgings, powder metallurgy parts, composites, effects of surface treatments, and test results for component parts.

  12. Mouse Curve Biometrics

    SciTech Connect

    Schulz, Douglas A.

    2007-10-08

    A biometric system suitable for validating user identity using only mouse movements and no specialized equipment is presented. Mouse curves (mouse movements with little or no pause between them) are individually classied and used to develop classication histograms, which are representative of an individual's typical mouse use. These classication histograms can then be compared to validate identity. This classication approach is suitable for providing continuous identity validation during an entire user session.

  13. Spinal curves and scoliosis.

    PubMed

    Anderson, Susan M

    2007-01-01

    Scoliosis, an abnormal side-to-side curve of the spine with associated vertebral rotation, affects as many as 4% of all adolescents. Several different categories of scoliosis exist, and treatment can range from observation and follow-up to bracing and surgical correction. This article discusses special imaging series for scoliosis and emphasizes the need for proper radiation protection techniques for patients with scoliosis, most of whom are girls in their early to mid-teens. PMID:17848532

  14. Precision manufacturing of compact disc master stampers

    SciTech Connect

    Bifano, T.; Caggiano, H.; Bierden, P.

    1996-12-31

    The authors have developed a new manufacturing process for compact disc master stamper production. Stamper is an industry term for the mold used to replicate polymer CDs in an injection molding device. The stamper surface contains a negative image of the CD`s >1 billion features, each measuring 0.5 {mu}m wide, 1-3{mu}m long, and 150 nm tall. These features are embossed in a spiral pattern on the 138 mm diameter stamper substrate. In conventional mastering, nickel sub-master stampers are generated by electroforming from a glass master with a masked photoresist layer. In the new process, called Precision Stamper Manufacturing (PSM), sub-master stampers are not required - the ceramic master is used directly as a stamper for injection molding. The technology uses precision manufacturing to improve productivity, reduce hazardous waste, and reduce costs in production of master stampers. All critical process steps have been proven feasible in the research reported here. More than 120 minutes of conventional manufacturing processes are replaced by about 20 minutes of precision machining processes, with improved precision in the final component. Another benefit of PSM is that it eliminates most process steps that produce hazardous wastes. Objectives of the experimental research have been to verify feasibility of the method, and to manufacture a prototype CD stamper. Over the past year, we have demonstrated feasibility of all process steps in the new method, and results will be presented. Also, we uncovered and quantified several important limitations for each process step, and combined the individual steps into a manufacturing cycle through which a full-scale working stamper prototype was made. These experiments made use of available facilities at two major equipment suppliers for the CD, an ion machining equipment, and a national research facility, in addition to facilities at Boston University and Prism Corporation.

  15. The Stephan Curve revisited.

    PubMed

    Bowen, William H

    2013-01-01

    The Stephan Curve has played a dominant role in caries research over the past several decades. What is so remarkable about the Stephan Curve is the plethora of interactions it illustrates and yet acid production remains the dominant focus. Using sophisticated technology, it is possible to measure pH changes in plaque; however, these observations may carry a false sense of accuracy. Recent observations have shown that there may be multiple pH values within the plaque matrix, thus emphasizing the importance of the milieu within which acid is formed. Although acid production is indeed the immediate proximate cause of tooth dissolution, the influence of alkali production within plaque has received relative scant attention. Excessive reliance on Stephan Curve leads to describing foods as "safe" if they do not lower the pH below the so-called "critical pH" at which point it is postulated enamel dissolves. Acid production is just one of many biological processes that occur within plaque when exposed to sugar. Exploration of methods to enhance alkali production could produce rich research dividends. PMID:23224410

  16. Dual arm master controller for a bilateral servo-manipulator

    DOEpatents

    Kuban, Daniel P.; Perkins, Gerald S.

    1989-01-01

    A master controller for a mechanically dissimilar bilateral slave servo-manipulator is disclosed. The master controller includes a plurality of drive trains comprising a plurality of sheave arrangements and cables for controlling upper and lower degrees of master movement. The cables and sheaves of the master controller are arranged to effect kinematic duplication of the slave servo-manipulator, despite mechanical differences therebetween. A method for kinematically matching a master controller to a slave servo-manipulator is also disclosed.

  17. Smarandache curves according to Sabban frame of fixed pole curve belonging to the Bertrand curves pair

    NASA Astrophysics Data System (ADS)

    Şenyurt, Süleyman; Altun, Yasin; Cevahir, Ceyda

    2016-04-01

    In this paper, we investigate the Smarandache curves according to Sabban frame of fixed pole curve which drawn by the unit Darboux vector of the Bertrand partner curve. Some results have been obtained. These results were expressed as the depends Bertrand curve.

  18. Master curve captures the effect of domain morphology on ethanol pervaporation through block copolymer membranes

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We report on the effect of changing nanoscale morphology on pervaporation of ethanol/water mixtures through block copolymer membranes. Experiments were conducted using polystyrene-b-polybutadiene-b-polystyrene (SBS) copolymers with polybutadiene (PB) as the ethanol transporting block, using an 8 wt%...

  19. A closure scheme for chemical master equations

    PubMed Central

    Smadbeck, Patrick; Kaznessis, Yiannis N.

    2013-01-01

    Probability reigns in biology, with random molecular events dictating the fate of individual organisms, and propelling populations of species through evolution. In principle, the master probability equation provides the most complete model of probabilistic behavior in biomolecular networks. In practice, master equations describing complex reaction networks have remained unsolved for over 70 years. This practical challenge is a reason why master equations, for all their potential, have not inspired biological discovery. Herein, we present a closure scheme that solves the master probability equation of networks of chemical or biochemical reactions. We cast the master equation in terms of ordinary differential equations that describe the time evolution of probability distribution moments. We postulate that a finite number of moments capture all of the necessary information, and compute the probability distribution and higher-order moments by maximizing the information entropy of the system. An accurate order closure is selected, and the dynamic evolution of molecular populations is simulated. Comparison with kinetic Monte Carlo simulations, which merely sample the probability distribution, demonstrates this closure scheme is accurate for several small reaction networks. The importance of this result notwithstanding, a most striking finding is that the steady state of stochastic reaction networks can now be readily computed in a single-step calculation, without the need to simulate the evolution of the probability distribution in time. PMID:23940327

  20. BOOK REVIEW: Mastering Physics (4th edn) Macmillan Master Series

    NASA Astrophysics Data System (ADS)

    Sugden, Chris

    2000-01-01

    The preface to the first edition of this book, in 1982, stated the aim as `presenting ideas with a directness and simplicity that will enable students to achieve maximum comprehension in the shortest possible time'. The fourth edition remains true to this aim, whilst paying some attention to the possibility of using the book alongside classroom work as well as a revision aid. However, it is as a clear concise summary of GCSE level physics (and a little bit beyond) that this book excels. I would recommend it to students as a revision aid at the end of the course and as a reference book during it. There should certainly be a few copies in the school library. Since I see the book's main role as being for the individual use of students it seemed sensible to ask one for his impression of the book having completed GCSE Physics a few months ago, and this is appended below. Philip Britton The book is split into many small, precise subsections and so allows easy reference to the topic you want to know about. The major equations are all included and explained well. The text is quite detailed and includes helpful examples. Concepts are explained in simple stages and in a way that is easy to understand; for example, the phases of the moon and ray diagrams. Resistors, which had been a little difficult for me, are very well explained. A simple detail like putting the names of the circuit symbols beside them on diagrams helps a lot. Throughout the book there are plenty of diagrams used to assist understanding rather than just illustrate the book. Overall I think that it would be best used as a revision aid. It reads very much like a syllabus with added explanation and examples. Perhaps it would be possible for a class to read a section before a lesson so less basic explanation is required during the lesson and other work can be done. The sections are brief enough to allow even the apathetic to complete such a homework assignment.

  1. Approximate probability distributions of the master equation

    NASA Astrophysics Data System (ADS)

    Thomas, Philipp; Grima, Ramon

    2015-07-01

    Master equations are common descriptions of mesoscopic systems. Analytical solutions to these equations can rarely be obtained. We here derive an analytical approximation of the time-dependent probability distribution of the master equation using orthogonal polynomials. The solution is given in two alternative formulations: a series with continuous and a series with discrete support, both of which can be systematically truncated. While both approximations satisfy the system size expansion of the master equation, the continuous distribution approximations become increasingly negative and tend to oscillations with increasing truncation order. In contrast, the discrete approximations rapidly converge to the underlying non-Gaussian distributions. The theory is shown to lead to particularly simple analytical expressions for the probability distributions of molecule numbers in metabolic reactions and gene expression systems.

  2. Outcomes of master's education in nursing.

    PubMed

    Cragg, C E Betty; Andrusyszyn, Mary-Anne

    2004-01-01

    This qualitative, descriptive study examined changes in perspective experienced by 22 recent graduates of Master's in Nursing programs from three Ontario universities. Participants responded to semi-structured, taped interviews and recounted personal, practice, and attitudinal changes they could attribute to completing a Master's program in Nursing. Among outcomes were personal ones including greater self-confidence, credibility, and acuity of critical thinking. Deeper and broader world-views of the profession and health care were evident. All participants valued evidence-based practice, reporting greater use of multiple information sources. Participants communicated with other professionals on more equal terms and some described a multicultural function, translating knowledge between staff nurses and members of other disciplines. Pride in nursing and its potential for shaping health care was a recurring theme. More professional opportunities became available following Master's studies. The outcomes of this study contribute to understanding the effects of graduate education in nursing. PMID:16646883

  3. Master equation as a radial constraint

    NASA Astrophysics Data System (ADS)

    Hussain, Uzair; Booth, Ivan; Kunduri, Hari K.

    2016-06-01

    We revisit the problem of perturbations of Schwarzschild-AdS4 black holes by using a combination of the Martel-Poisson formalism for perturbations of four-dimensional spherically symmetric spacetimes [K. Martel and E. Poisson, Phys. Rev. D 71, 104003 (2005).] and the Kodama-Ishibashi formalism [H. Kodama and A. Ishibashi, Prog. Theor. Phys. 110, 701 (2003).]. We clarify the relationship between both formalisms and express the Brown-York-Balasubramanian-Krauss boundary stress-energy tensor, T¯μ ν, on a finite-r surface purely in terms of the even and odd master functions. Then, on these surfaces we find that the spacelike components of the conservation equation D¯μT¯μ ν=0 are equivalent to the wave equations for the master functions. The renormalized stress-energy tensor at the boundary r/L lim r →∞ T¯μ ν is calculated directly in terms of the master functions.

  4. Master space, Hilbert series and Seiberg duality

    NASA Astrophysics Data System (ADS)

    Forcella, Davide; Hanany, Amihay; Zaffaroni, Alberto

    2009-07-01

    We analyze the action of Toric (Seiberg) duality on the combined mesonic and baryonic moduli space of quiver gauge theories obtained from D3 branes at Calabi-Yau singularities. We analyze in particular the structure of the master space, the complete moduli space for one brane, for different toric phases of a given singularity. We show that the Hilbert Series for the largest component of the master space of different phases is the same, when refined with all the non anomalous charges. This reflects the fact that the quiver gauge theories associated with different phases are related by Seiberg duality when the number of branes is greater than one.

  5. Critical points and number of master integrals

    NASA Astrophysics Data System (ADS)

    Lee, Roman N.; Pomeransky, Andrei A.

    2013-11-01

    We consider the question about the number of master integrals for a multiloop Feynman diagram. We show that, for a given set of denominators, this number is totally determined by the critical points of the polynomials entering either of the two representations: the parametric representation and the Baikov representation. In particular, for the parametric representation the corresponding polynomial is just the sum of Symanzik polynomials. The relevant topological invariant is the sum of the Milnor numbers of the proper critical points. We present a Mathematica package Mint to automatize the counting of the master integrals for the typical case, when all critical points are isolated.

  6. Mastering hysteresis in magnetocaloric materials.

    PubMed

    Gutfleisch, O; Gottschall, T; Fries, M; Benke, D; Radulov, I; Skokov, K P; Wende, H; Gruner, M; Acet, M; Entel, P; Farle, M

    2016-08-13

    Hysteresis is more than just an interesting oddity that occurs in materials with a first-order transition. It is a real obstacle on the path from existing laboratory-scale prototypes of magnetic refrigerators towards commercialization of this potentially disruptive cooling technology. Indeed, the reversibility of the magnetocaloric effect, being essential for magnetic heat pumps, strongly depends on the width of the thermal hysteresis and, therefore, it is necessary to understand the mechanisms causing hysteresis and to find solutions to minimize losses associated with thermal hysteresis in order to maximize the efficiency of magnetic cooling devices. In this work, we discuss the fundamental aspects that can contribute to thermal hysteresis and the strategies that we are developing to at least partially overcome the hysteresis problem in some selected classes of magnetocaloric materials with large application potential. In doing so, we refer to the most relevant classes of magnetic refrigerants La-Fe-Si-, Heusler- and Fe2P-type compounds.This article is part of the themed issue 'Taking the temperature of phase transitions in cool materials'. PMID:27402928

  7. Titration Curves: Fact and Fiction.

    ERIC Educational Resources Information Center

    Chamberlain, John

    1997-01-01

    Discusses ways in which datalogging equipment can enable titration curves to be measured accurately and how computing power can be used to predict the shape of curves. Highlights include sources of error, use of spreadsheets to generate titration curves, titration of a weak acid with a strong alkali, dibasic acids, weak acid and weak base, and…

  8. The Master's Thesis in Applied Psychology Training.

    ERIC Educational Resources Information Center

    Shultz, Kenneth S.; Kottke, Janet L.

    1996-01-01

    Recommends the inclusion of a master's thesis in industrial and organizational psychology programs. Argues that the thesis serves several critical educational purposes and is relevant to applied psychology. Offers suggestions for increasing the relationship between the educational requirement and the professional tasks. (MJP)

  9. Master Plan and Chancellors Hall Southampton College.

    ERIC Educational Resources Information Center

    Linn, Charles

    1998-01-01

    Discusses a college master plan that remodeled old buildings, added new ones, and tied roads together on a campus that had experienced a haphazard evolution. The plan included splitting large parking lots into smaller ones divided by trees and plants, moving university functions of certain buildings to other locations, and strategically locating…

  10. Master Console System Monitoring and Control Development

    NASA Technical Reports Server (NTRS)

    Brooks, Russell A.

    2013-01-01

    The Master Console internship during the summer of 2013 involved the development of firing room displays and support applications at the John F. Kennedy Space Center (KSC). This position was with the Master Console Product Group (MCPG) on the Launch Control System (LCS) project. This project is responsible for the System Monitoring and Control (SMC) and Record and Retrieval (R&R) of launch operations data. The Master Console is responsible for: loading the correct software into each of the remaining consoles in the firing room, connecting the proper data paths to and from the launch vehicle and all ground support equipment, and initializing the entire firing room system to begin processing. During my internship, I created control scripts using the Application Control Language (ACL) to analyze the health and status of Kennedy Ground Control System (KGCS) programmable logic controllers (PLCs). This application provides a system health and status display I created with summarized data for use by Master Console Operators (MCO) to monitor and verify the integrity of KGCS subsystems.

  11. Creating a Successful Facility Master Plan.

    ERIC Educational Resources Information Center

    DeJong, William; Staskiewicz, Carolyn

    2001-01-01

    Presents the steps necessary for creating a successful facility master plan, including the purpose and use of a steering committee and the need for a comprehensive database that includes a community/school profile. Explains community involvement in plan development, and outlines the steps necessary for preparing a final facility plan for…

  12. An Examination of Master's Student Retention & Completion

    ERIC Educational Resources Information Center

    Barry, Melissa; Mathies, Charles

    2011-01-01

    This study was conducted at a research-extensive public university in the southeastern United States. It examined the retention and completion of master's degree students across numerous disciplines. Results were derived from a series of descriptive statistics, T-tests, and a series of binary logistic regression models. The findings from binary…

  13. BUILDING ROBUST TRANSCRIPTOMES WITH MASTER SPLICING FACTORS

    PubMed Central

    Jangi, Mohini; Sharp, Phillip A.

    2014-01-01

    Coherent splicing networks arise from many discrete splicing decisions regulated in unison. Here, we examine the properties of robust, context-specific splicing networks. We propose that a subset of key splicing regulators, or “master splicing factors,” respond to environmental cues to establish and maintain tissue transcriptomes during development. PMID:25417102

  14. An anthropomorphic master-slave manipulator system.

    NASA Technical Reports Server (NTRS)

    Vykukal, H. C.; King, R. F.; Vallotton, W. C.

    1973-01-01

    Review of some of the results of a teleoperator systems technology program devoted to the development of an anthropomorphic unilateral master-slave manipulator system. Following a discussion of the mechanical design details and servo design considerations, the developed system's test results are presented.

  15. Transparency Master: Planaria in the Classroom.

    ERIC Educational Resources Information Center

    Jensen, Lauritz A.; Allen, A. Lester

    1983-01-01

    Background information on the morphology and physiology of planarians and uses of the organism in schools is provided. Also provided is a transparency master demonstrating a planarian with an everted proboscis, two-headed/two-tailed planarians, and a planarian demonstrating the digestive tract. (JN)

  16. Latin square three dimensional gage master

    DOEpatents

    Jones, Lynn L.

    1982-01-01

    A gage master for coordinate measuring machines has an nxn array of objects distributed in the Z coordinate utilizing the concept of a Latin square experimental design. Using analysis of variance techniques, the invention may be used to identify sources of error in machine geometry and quantify machine accuracy.

  17. Three Steps to Mastering Multiplication Facts

    ERIC Educational Resources Information Center

    Kling, Gina; Bay-Williams, Jennifer M.

    2015-01-01

    "That was the day I decided I was bad at math." Countless times, preservice and in-service teachers make statements such as this after sharing vivid memories of learning multiplication facts. Timed tests; public competitive games, such as Around the World; and visible displays of who has and has not mastered groups of facts still…

  18. Remembering a Master Teacher: Frank Wachowiak.

    ERIC Educational Resources Information Center

    Morris, Jimmy Oliver

    1989-01-01

    Illustrates the skill and inspiration of master art teacher, Frank Wachowiak, by presenting three lessons for children: "Fruits and Vegetables" or "Leaves" in crayon resist, "X-ray Trees" in crayon engraving and "Angels or Self-portraits" in tempera. Lessons emphasize the use of patterns and textures, as well as contrasting colors and shapes. (LS)

  19. Becoming a Master Student. Fifth edition.

    ERIC Educational Resources Information Center

    Ellis, David B.

    A guide to support student success in extended orientation courses, freshman seminars, and study skills classes is presented, using exercises such as journal-keeping, stories of 12 people who have mastered specific skills, practical suggestions, and forms and charts. The major topics are: time management, memory, reading, note-taking, test-taking,…

  20. Evaluating the Georgia Master Naturalist Program

    ERIC Educational Resources Information Center

    Hildreth, Lauren; Mengak, Michael T.

    2016-01-01

    We evaluated the Georgia Master Naturalist Program using an online survey. Survey participation was voluntary, and the survey addressed areas such as satisfaction, volunteerism, and future training. The program received high scores from survey respondents. They appreciated training on native plants, environmental awareness, and ecological…

  1. TEN MASTER TEACHER AND PROGRAM AWARD PROGRAMS.

    ERIC Educational Resources Information Center

    KOVACH, EDITH M.A.

    IN 1966 THE AMERICAN CLASSICAL LEAGUE HONORED THREE TEACHERS WITH ITS MASTER SECONDARY SCHOOL LATIN TEACHER AND PROGRAM AWARD. AMONG THE 32 PROGRAMS CITED FOR RECOGNITION, TEN (INCLUDING THOSE OF THE AWARD WINNERS) POSSESS CLEARLY INNOVATIVE FEATURES. IN BRIEF THEY FEATURE (1) A FIFTH YEAR ADVANCED PLACEMENT PROGRAM, LATIN AS INTRODUCTORY TO…

  2. Validating the Master's Degree in Rehabilitation Counseling.

    ERIC Educational Resources Information Center

    Dunn, Dennis J.

    1990-01-01

    Sees universal adoption of master's degree in rehabilitation counseling as hiring criterion requiring its validation in relation to job performance. Proposes large-scale validation study involving state-federal vocational rehabilitation agencies that would make use of extensive existing vocational rehabilitation database, and relate type and level…

  3. Conference Report: Masters Forum IV, February 2002

    NASA Technical Reports Server (NTRS)

    Post, Todd

    2002-01-01

    The purpose of the APPL Masters Forum is to bring together some of the best project managers at NASA, as well as those in industry and other government agencies, for 2 1/2 days of knowledge sharing. The project managers come eager to reflect on their project experiences, to learn new things from one another--and to unlearn a few things, too. This was the fourth Masters Forum, and the first one held outside Washington, DC. Fifty participants from across the country came to Dallas at the American Airlines Conference Center, a wonderful facility that was conveniently located by the airport and yet still seemed isolated from the rest of the world. Masters Forum IV was also the first one held during the winter. Previous Masters Forums have been during the summer. Hot, sticky Washington, D.C. in the summer may sound unpleasant, but frankly the popularity of earlier Forums is what led to this annual event becoming a semiannual one.

  4. Whatcom Community College Master Plan, 1978.

    ERIC Educational Resources Information Center

    Whatcom Community Coll., Bellingham, WA.

    This master plan for Whatcom Community College (WCC) is intended to communicate the purposes and direction of the College to its clientele and to provide WCC personnel with guidelines for developing activities which will accomplish the purposes and move the College in that direction. The first chapter traces the history of WCC, describes WCC's…

  5. Hunter College Dance Therapy Masters Program.

    ERIC Educational Resources Information Center

    Schmais, Claire; White, Elissa Q.

    Described is development of the Hunter College dance therapy 18-month 30-credit masters program involving 33 adult students, (in two classes beginning in 1971 and 1972), an educational model, internship in psychiatric institutions, and preparation of instructional materials. The dance therapist is said to incorporate the psychiatric patient's…

  6. Collaboration in Education: The Urban Master's Program.

    ERIC Educational Resources Information Center

    Warring, Douglas F.; Huber, Susan J.

    This paper describes an inservice teacher education program--its development and its attempts to prepare teachers for urban environments. As the result of a collaborative venture between the University of St. Thomas (Minnesota), the American Federation of Teachers Local 59, and the Minneapolis (Minnesota) school district, a distinctive master's…

  7. The Master's in Social Sciences and Humanities.

    ERIC Educational Resources Information Center

    Boddy, Francis M.

    Three general levels of degrees can be categorized in some general sense: the bachelor's program emphasizes the simple ideas about social systems in the social sciences and the basic ideas about the development of value systems and the appreciation of values in the humanities; master's degrees, at least in the major institutions, are often…

  8. More Students Master "Basics" on Writing NAEP

    ERIC Educational Resources Information Center

    Manzo, Kathleen Kennedy

    2008-01-01

    At a time when many teenagers are consumed by such activities as text-messaging, blogging, and social networking, more middle and high school students than in the past have mastered the formal "basic" writing skills needed to express ideas or share information, national assessment results released last week show. But just small proportions--33…

  9. "The Ancient Master Painted like Me"

    ERIC Educational Resources Information Center

    Chiu, Son-Mey

    2009-01-01

    By following their wonderful ideas or critical exploration, three eighth graders learned how to do traditional Chinese painting, which is taught by copying old masters' work from the Ming Dynasty in the 17th century. The standard manual, which most learners have been using for these three hundred years, is the "Mustard Seed Garden Manual of…

  10. Does California's Master Plan Still Work?

    ERIC Educational Resources Information Center

    Burdman, Pamela

    2009-01-01

    For nearly 50 years, California's higher education system has been shaped by the tripartite division of the vaunted Master Plan. The 1960 document's bold vision of access and quality safeguarded a system of selective research universities (the University of California) and provided baccalaureate education through less-selective campuses (the…

  11. Colorado Academic Library Master Plan. Revised Edition.

    ERIC Educational Resources Information Center

    Johns, Claude, Jr., Ed.; Moore, Beverly, Ed.

    This master plan for Colorado academic libraries assesses current strengths and weaknesses of public and private academic libraries in the state and forecasts the role of academic libraries in support of higher education. The plan consists of a series of recommendations divided into six related and overlapping sections: access, collection…

  12. The Four Master Tropes: Analogues of Development.

    ERIC Educational Resources Information Center

    D'Angelo, Frank J.

    1992-01-01

    Discusses a rhetorical competence theory that is primarily concerned with an abstract understanding of the rhetorical and cognitive processes that underlie rhetorical acts. Presents the theory as an analogical system based on the four master tropes: metaphor, metonymy, synecdoche, and irony. Draws upon the systems of analogical reasoning, problem…

  13. 33 CFR 138.110 - Master Certificates.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION FINANCIAL RESPONSIBILITY FOR WATER POLLUTION (VESSELS) AND OPA 90 LIMITS OF LIABILITY (VESSELS AND DEEPWATER PORTS) Financial Responsibility for Water Pollution (Vessels) § 138.110 Master Certificates. (a) A contractor or other person who is responsible for...

  14. 33 CFR 138.110 - Master Certificates.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION FINANCIAL RESPONSIBILITY FOR WATER POLLUTION (VESSELS) AND OPA 90 LIMITS OF LIABILITY (VESSELS AND DEEPWATER PORTS) Financial Responsibility for Water Pollution (Vessels) § 138.110 Master Certificates. (a) A contractor or other person who is responsible for...

  15. 33 CFR 138.110 - Master Certificates.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION FINANCIAL RESPONSIBILITY FOR WATER POLLUTION (VESSELS) AND OPA 90 LIMITS OF LIABILITY (VESSELS AND DEEPWATER PORTS) Financial Responsibility for Water Pollution (Vessels) § 138.110 Master Certificates. (a) A contractor or other person who is responsible for...

  16. 33 CFR 138.110 - Master Certificates.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION FINANCIAL RESPONSIBILITY FOR WATER POLLUTION (VESSELS) AND OPA 90 LIMITS OF LIABILITY (VESSELS AND DEEPWATER PORTS) Financial Responsibility for Water Pollution (Vessels) § 138.110 Master Certificates. (a) A contractor or other person who is responsible for...

  17. 33 CFR 138.110 - Master Certificates.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) MARINE POLLUTION FINANCIAL RESPONSIBILITY AND COMPENSATION FINANCIAL RESPONSIBILITY FOR WATER POLLUTION (VESSELS) AND OPA 90 LIMITS OF LIABILITY (VESSELS AND DEEPWATER PORTS) Financial Responsibility for Water Pollution (Vessels) § 138.110 Master Certificates. (a) A contractor or other person who is responsible for...

  18. Description of Professional Master's Athletic Training Programs

    ERIC Educational Resources Information Center

    Bowman, Thomas G.; Pitney, William A.; Mazerolle, Stephanie M.; Dodge, Thomas M.

    2015-01-01

    Context: Professional master's (PM) athletic training programs (ATPs) are becoming more popular as the profession debates what the entry-level degree should be for athletic training. More information is needed related to the potential benefits of PM ATPs. Objective: Describe the Commission on Accreditation of Athletic Training Education (CAATE)…

  19. The Master's in Science and Engineering.

    ERIC Educational Resources Information Center

    Bohm, Henry V.

    There are three kinds of master's degrees in the natural sciences: (1) the booby prize, for students who during their graduate career are disqualified for academic reasons from continuing to the Ph.D.; (2) the automatic degree with no thesis requirement and generally awarded after accumulating a certain number of credits; and (3) the degree that…

  20. California Master Plan for Special Education.

    ERIC Educational Resources Information Center

    California State Dept. of Education, Sacramento.

    Reported is California's master plan for providing a quality educational program to all of the state's handicapped children. Topics covered include a definition of special education, interaction between special education and general education, and a look at California's programs including new directions and current weaknesses. Presented are a…

  1. Master Contract, July 1977-June 1980.

    ERIC Educational Resources Information Center

    Mississippi Univ., University. Inst. of Urban Research.

    The master contract between the San Joaquin Delta College Teachers Association/CTA/NEA and the Board of Trustees of the San Joaquin Delta Community College District for July 1977 to June 1980 is presented in full. Thirty articles include: Agreement, Recognition, Definitions, Negotiation Procedures, Non-Discrimination, Association Rights,…

  2. Global Change Master Directory enhances search for Earth science data

    NASA Astrophysics Data System (ADS)

    Olsen, Lola

    The Global Change Master Directory (GCMD) offers an on-line search and retrieval system for those interested in identifying Earth science data sets for educational and research needs. At the heart of the directory is a database of 3400 Earth science entries.It includes references to data held at many federal agencies, universities, and foreign countries. Content is updated and software is upgraded continuously by the GCMD staff. Earth science data set descriptions in the GCMD are written in the Directory Interchange Format (DIF). The DIF has gained interagency and international acceptance in documenting directory-level information for the Earth sciences. New fields have recently been added to bring the DIF into compliance with the Federal Geographic Data Committee's Content Standard for Digital Geospatial Metadata. These additional new fields allow more complete documentation for all data sets, including those held in Geographic Information Systems.

  3. Birational maps that send biquadratic curves to biquadratic curves

    NASA Astrophysics Data System (ADS)

    Roberts, John A. G.; Jogia, Danesh

    2015-02-01

    Recently, many papers have begun to consider so-called non-Quispel-Roberts-Thompson (QRT) birational maps of the plane. Compared to the QRT family of maps which preserve each biquadratic curve in a fibration of the plane, non-QRT maps send a biquadratic curve to another biquadratic curve belonging to the same fibration or to a biquadratic curve from a different fibration of the plane. In this communication, we give the general form of a birational map derived from a difference equation that sends a biquadratic curve to another. The necessary and sufficient condition for such a map to exist is that the discriminants of the two biquadratic curves are the same (and hence so are the j-invariants). The result allows existing examples in the literature to be better understood and allows some statements to be made concerning their generality.

  4. Master Study Programmes Orientation and Curricula Inconsistency in Lithuanian Universities

    ERIC Educational Resources Information Center

    Lauzackas, Rimantas; Rackauskaite, Aiste; Jaskauskaite, Daiva

    2004-01-01

    When independence was restored in Lithuania, a single-stage higher education system that had existed hitherto was reorganised into a multi-stage system with Bachelor, Master and Doctoral programme studies. The analysis of Master studies, as a new and atypical phenomenon in Lithuania, highlights the discrepancies between Master programme curricula…

  5. 46 CFR 169.817 - Master to instruct ship's company.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Master to instruct ship's company. 169.817 Section 169.817 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Operations § 169.817 Master to instruct ship's company. The master shall conduct drills and...

  6. 46 CFR 169.817 - Master to instruct ship's company.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Master to instruct ship's company. 169.817 Section 169.817 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Operations § 169.817 Master to instruct ship's company. The master shall conduct drills and...

  7. 46 CFR 169.817 - Master to instruct ship's company.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Master to instruct ship's company. 169.817 Section 169.817 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Operations § 169.817 Master to instruct ship's company. The master shall conduct drills and...

  8. 46 CFR 169.817 - Master to instruct ship's company.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Master to instruct ship's company. 169.817 Section 169.817 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Operations § 169.817 Master to instruct ship's company. The master shall conduct drills and...

  9. 46 CFR 169.817 - Master to instruct ship's company.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Master to instruct ship's company. 169.817 Section 169.817 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Operations § 169.817 Master to instruct ship's company. The master shall conduct drills and...

  10. The Master's Degree, The Comprehensive University, and The National Interest.

    ERIC Educational Resources Information Center

    Casanova, Sally L.; And Others

    1992-01-01

    This article offers opinions and insights from four graduate deans at California State University institutions concerning the master's degree and the direction of master's level education. It is noted that U.S. graduate education is increasingly concentrated at the master's degree level, and that this degree level serves a particularly important…

  11. Geostatistical prediction of flow-duration curves

    NASA Astrophysics Data System (ADS)

    Pugliese, A.; Castellarin, A.; Brath, A.

    2013-11-01

    We present in this study an adaptation of Topological kriging (or Top-kriging), which makes the geostatistical procedure capable of predicting flow-duration curves (FDCs) in ungauged catchments. Previous applications of Top-kriging mainly focused on the prediction of point streamflow indices (e.g. flood quantiles, low-flow indices, etc.). In this study Top-kriging is used to predict FDCs in ungauged sites as a weighted average of standardised empirical FDCs through the traditional linear-weighting scheme of kriging methods. Our study focuses on the prediction of period-of-record FDCs for 18 unregulated catchments located in Central Italy, for which daily streamflow series with length from 5 to 40 yr are available, together with information on climate referring to the same time-span of each daily streamflow sequence. Empirical FDCs are standardised by a reference streamflow value (i.e. mean annual flow, or mean annual precipitation times the catchment drainage area) and the overall deviation of the curves from this reference value is then used for expressing the hydrological similarity between catchments and for deriving the geostatistical weights. We performed an extensive leave-one-out cross-validation to quantify the accuracy of the proposed technique, and to compare it to traditional regionalisation models that were recently developed for the same study region. The cross-validation points out that Top-kriging is a reliable approach for predicting FDCs, which can significantly outperform traditional regional models in ungauged basins.

  12. Hybrid method for the chemical master equation

    SciTech Connect

    Hellander, Andreas Loetstedt, Per

    2007-11-10

    The chemical master equation is solved by a hybrid method coupling a macroscopic, deterministic description with a mesoscopic, stochastic model. The molecular species are divided into one subset where the expected values of the number of molecules are computed and one subset with species with a stochastic variation in the number of molecules. The macroscopic equations resemble the reaction rate equations and the probability distribution for the stochastic variables satisfy a master equation. The probability distribution is obtained by the Stochastic Simulation Algorithm due to Gillespie. The equations are coupled via a summation over the mesoscale variables. This summation is approximated by Quasi-Monte Carlo methods. The error in the approximations is analyzed. The hybrid method is applied to three chemical systems from molecular cell biology.

  13. Synthetic RR Lyrae velocity curves

    SciTech Connect

    Liu, Tianxing Boston Univ., MA )

    1991-02-01

    An amplitude correlation between the pulsation velocity curves and visual light curves of ab-type RR Lyrae stars is derived from a large number of RR Lyrae that have high-precision radial-velocity and photometric data. Based on the determined AVp, AV ralation, a synthetic radial-velocity curve for a typical ab-type RR Lyrae star is constructed. This would be of particular use in determining the systemic velocities of RR Lyrae. 17 refs.

  14. Markovian master equation for nonlinear systems

    NASA Astrophysics Data System (ADS)

    de los Santos-Sánchez, O.; Récamier, J.; Jáuregui, R.

    2015-06-01

    Within the f-deformed oscillator formalism, we derive a Markovian master equation for the description of the damped dynamics of nonlinear systems that interact with their environment. The applicability of this treatment to the particular case of a Morse-like oscillator interacting with a thermal field is illustrated, and the decay of quantum coherence in such a system is analyzed in terms of the evolution on phase space of its nonlinear coherent states via the Wigner function.

  15. The skills of the change master.

    PubMed

    Flower, J

    1996-11-01

    What are the fundamental skills for dealing with change? Presented here are nine skills that can help you become a change master in an uncertain and turbulent health care environment. These skills range from active listening to seeing the big picture. Managing change--whether solving a problem immediately or knowing that the best decision is to wait--will be fundamental for success. PMID:10162502

  16. Differential thermal performance curves in response to different habitats in the parasitoid Venturia canescens

    NASA Astrophysics Data System (ADS)

    Foray, Vincent; Gibert, Patricia; Desouhant, Emmanuel

    2011-08-01

    Environmental variability is expected to be important in shaping performance curves, reaction norms of phenotypic traits related to fitness. Models predict that the breadth of performance curves should increase with environmental variability at the expense of maximal performance. In this study, we compared the thermal performance curves of two sympatric populations of the parasitoid Venturia canescens that were observed under contrasting thermal regimes in their respective preferred habitats and differing in their modes of reproduction. Our results confirm the large effect of developmental temperature on phenotypic traits of insects and demonstrate that thelytokous and arrhenotokous wasps respond differently to temperature during development, in agreement with model predictions. For traits related to fecundity, thelytokous parasitoids, which usually occur in stable thermal conditions, exhibit specialist performance curves, maximising their reproductive success under a restricted range of temperature. In contrast, arrhenotokous parasitoids, which occur in variable climates, exhibit generalist performance curves, in keeping with the hypothesis "jack of all temperatures, master of none".

  17. Dual arm master controller for a bilateral servo-manipulator

    SciTech Connect

    Kuban, D.P.; Perkins, G.S.

    1989-11-28

    A master controller for a mechanically dissimilar bilateral slave servo-manipulator is disclosed. The master controller includes a plurality of drive trains comprising a plurality of sheave arrangements and cables for controlling upper and lower degrees of master movement. The cables and sheaves of the master controller are arranged to effect kinematic duplication of the slave servo-manipulator, despite mechanical differences there between. A method for kinematically matching a master controller to a slave servo-manipulator is also disclosed. 13 figs.

  18. Effects of Work Environment on Transfer of Training: Empirical Evidence from Master of Business Administration Programs in Vietnam

    ERIC Educational Resources Information Center

    Pham, Nga T. P.; Segers, Mien S. R.; Gijselaers, Wim H.

    2013-01-01

    Practical application of newly gained knowledge and skills, also referred to as transfer of training, is an issue of great concern in training issues generally and in Master of Business Administration (MBA) programs particularly. This empirical study examined the influence of the trainees' work environment on their transfer of training, taking…

  19. Journal Use by Graduate Students as Indicated by Master's Theses Bibliographies at an Urban Commuter College, 1991-2004

    ERIC Educational Resources Information Center

    Sexton, Ellen

    2006-01-01

    Citation analyses were carried out on master's theses in three disciplines: forensic psychology, forensic science, and criminal justice, completed and deposited in the John Jay College Library from 1991 to 2004. The aim was to determine the effect of availability of electronic journals on students' choice of references. The number of journal…

  20. Teachers' and Students' Experiences of Simultaneous Teaching in an International Distance and On-Campus Master's Programme in Engineering

    ERIC Educational Resources Information Center

    Popov, Oleg

    2009-01-01

    Swedish universities frequently offer campus-based education as well as online courses, a system commonly referred to as dual mode. This paper analyses some challenging pedagogical aspects of a master's programme in engineering developed and delivered simultaneously online and on campus. Course evaluations, questionnaires, and interviews with the…

  1. Light synthesis program for binary stars. II. Light curve and color curve effects in a contact system

    SciTech Connect

    Linnell, A.P.

    1986-01-01

    VW Cephei's observed light and color curves are presently noted to agree with theoretical curves for a Rucinski (1978) hot secondary model, with a single spot, added to the underlying hot secondary model, furnishing a reasonably accurate representation of UBVRI photometric data. In this model, the implied baroclinic photosphere is consistent with the Webbink (1977) scenario for mass circulation and energy transport in W-type W UMa systems. Current data, however, cannot unambiguously discriminate between the two acceptable models. 58 references.

  2. Digital-voltage curve generator

    NASA Technical Reports Server (NTRS)

    Perlman, M.

    1970-01-01

    Curve generator capable of producing precisely repeatable curve for any single-valued function of voltage versus time uses digital approach, implemented by means of clocked feedback shift register, large scale integrated circuit diode matrix comprising about 12,000 diodes, counter, and digital-to-analog converter.

  3. Tool For Making Curved Holes

    NASA Technical Reports Server (NTRS)

    Allard, Robert; Calve, Andrew; Pastreck, Edwin; Padden, Edward

    1992-01-01

    Tool for use in electrical-discharge machining (EDM) guides EDM electrode in making curved holes. Guide rod fits in slot in arm, which moves through arc. Motion drives electrode into workpiece along desired curved path. Electrode burns into workpiece while arm rotates on spindle. Discharge cuts hole of same radius of curvature.

  4. Library Reference Services.

    ERIC Educational Resources Information Center

    Miller, Constance; And Others

    1985-01-01

    Seven articles on library reference services highlight reference obsolescence in academic libraries, major studies of unobtrusive reference tests, methods for evaluating reference desk performance, reference interview evaluation, problems of reference desk control, online searching by end users, and reference collection development in…

  5. Statistical methods for pavement performance curve building, historical analysis, data sampling and storage: Appendix D. Final report

    SciTech Connect

    1998-08-01

    The technical memorandum is intended to discuss the detailed procedure required for carrying out the statistical analyses of historical pavement condition data for building pavement performance curves. This chapter assumes the availability of the historical data in a spreadsheet format (Microsoft{trademark} Excel) that has been retrieved from the master (pavement management system) database.

  6. A learning curve for solar thermal power

    NASA Astrophysics Data System (ADS)

    Platzer, Werner J.; Dinter, Frank

    2016-05-01

    Photovoltaics started its success story by predicting the cost degression depending on cumulated installed capacity. This so-called learning curve was published and used for predictions for PV modules first, then predictions of system cost decrease also were developed. This approach is less sensitive to political decisions and changing market situations than predictions on the time axis. Cost degression due to innovation, use of scaling effects, improved project management, standardised procedures including the search for better sites and optimization of project size are learning effects which can only be utilised when projects are developed. Therefore a presentation of CAPEX versus cumulated installed capacity is proposed in order to show the possible future advancement of the technology to politics and market. However from a wide range of publications on cost for CSP it is difficult to derive a learning curve. A logical cost structure for direct and indirect capital expenditure is needed as the basis for further analysis. Using derived reference cost for typical power plant configurations predictions of future cost have been derived. Only on the basis of that cost structure and the learning curve levelised cost of electricity for solar thermal power plants should be calculated for individual projects with different capacity factors in various locations.

  7. The master degree: A critical transition in STEM doctoral education

    NASA Astrophysics Data System (ADS)

    Lange, Sheila Edwards

    The need to broaden participation in the nation's science, technology, engineering, and mathematics (STEM) undergraduate and graduate programs is currently a matter of national urgency. The small number of women and underrepresented minorities (URM) earning doctoral degrees in STEM is particularly troubling given significant increases in the number of students earning master's degrees since 1990. In the decade between 1990 and 2000, the total number of master's recipients increased by 42%. During this same time period, the number of women earning master's degrees increased by 56%, African Americans increased by 132%, American Indians by 101%, Hispanics by 146%, and Asian Americans by 117% (Syverson, 2003). Growth in underrepresented group education at the master's level raises questions about the relationship between master's and doctoral education. Secondary data analysis of the Survey of Earned Doctorates (SED) was used to examine institutional pathways to the doctorate in STEM disciplines and transitions from master's to doctoral programs by race and gender. While the study revealed no significant gender differences in pathways, compared to White and Asian American students, URM students take significantly different pathways to the doctorate. URM students are significantly more likely to earn the bachelor's, master's, and doctoral degrees at three different institutions. Their path is significantly more likely to include earning a master's degree en route to the doctorate. Further, URM students are more likely to experience transition between the master's and doctoral degrees, and the transitions are not limited to those who earn master's degrees at master's-only institutions. These findings suggest that earning a master's degree is more often a stepping stone to the doctorate for URM students. Master's degree programs, therefore, have the potential to be a valuable resource for policymakers and graduate programs seeking to increase the diversity of URM students

  8. Setting the stage for master's level success

    NASA Astrophysics Data System (ADS)

    Roberts, Donna

    Comprehensive reading, writing, research, and study skills play a critical role in a graduate student's success and ability to contribute to a field of study effectively. The literature indicated a need to support graduate student success in the areas of mentoring, navigation, as well as research and writing. The purpose of this two-phased mixed methods explanatory study was to examine factors that characterize student success at the Master's level in the fields of education, sociology and social work. The study was grounded in a transformational learning framework which focused on three levels of learning: technical knowledge, practical or communicative knowledge, and emancipatory knowledge. The study included two data collection points. Phase one consisted of a Master's Level Success questionnaire that was sent via Qualtrics to graduate level students at three colleges and universities in the Central Valley of California: a California State University campus, a University of California campus, and a private college campus. The results of the chi-square indicated that seven questionnaire items were significant with p values less than .05. Phase two in the data collection included semi-structured interview questions that resulted in three themes emerged using Dedoose software: (1) the need for more language and writing support at the Master's level, (2) the need for mentoring, especially for second-language learners, and (3) utilizing the strong influence of faculty in student success. It is recommended that institutions continually assess and strengthen their programs to meet the full range of learners and to support students to degree completion.

  9. Graph theory and the Virasoro master equation

    SciTech Connect

    Obers, N.A.J.

    1991-01-01

    A brief history of affine Lie algebra, the Virasoro algebra and its culmination in the Virasoro master equation is given. By studying ansaetze of the master equation, the author obtains exact solutions and gains insight in the structure of large slices of affine-Virasoro space. He finds an isomorphism between the constructions in the ansatz SO(n){sub diag}, which is a set of unitary, generically irrational affine-Virasoro constructions on SO(n), and the unlabeled graphs of order n. On the one hand, the conformal constructions, are classified by the graphs, while, conversely, a group-theoretic and conformal field-theoretic identification is obtained for every graph of graph theory. He also defines a class of magic Lie group bases in which the Virasoro master equation admits a simple metric ansatz {l brace}g{sub metric}{r brace}, whose structure is visible in the high-level expansion. When a magic basis is real on compact g, the corresponding g{sub metric} is a large system of unitary, generically irrational conformal field theories. Examples in this class include the graph-theory ansatz SO(n){sub diag} in the Cartesian basis of SO(n), and the ansatz SU(n){sub metric} in the Pauli-like basis of SU(n). Finally, he defines the sine-area graphs' of SU(n), which label the conformal field theories of SU(n){sub metric}, and he notes that, in similar fashion, each magic basis of g defines a generalized graph theory on g which labels the conformal field theories of g{sub metric}.

  10. Graph theory and the Virasoro master equation

    SciTech Connect

    Obers, N.A.J.

    1991-04-01

    A brief history of affine Lie algebra, the Virasoro algebra and its culmination in the Virasoro master equations is given. By studying ansaetze of the master equation, we obtain exact solutions and gain insight in the structure of large slices of affine-Virasoro space. We find an isomorphism between the constructions in the ansatz SO(n){sub diag}, which is a set of unitary, generically irrational affine-Virasoro constructions on SO(n), and the unlabelled graphs, while, conversely, a group-theoretic and conformal field-theoretic identification is obtained for every graph of graph theory. We also define a class of magic'' Lie group bases in which the Virasoro master equation admits a simple metric ansatz (gmetric), whose structure is visible in the high-level expansion. When a magic basis is real on compact g, the corresponding g{sub metric} is a large system of unitary, generically irrational conformal field theories. Examples in this class include the graph-theory ansatz SO(n){sub diag} in the Cartesian basis of SO(n), and the ansatz SU(n){sub metric} in the Pauli-like basis of SU(n). Finally, we define the sine-area graphs'' of SU(n), which label the conformal field theories of SU(n){sub metric}, and we note that, in similar fashion, each magic basis of g defines a generalized graph theory on g which labels the conformal field theories of g{sub metric}. 24 figs., 4 tabs.

  11. TWRS privatization phase 1 master site plan

    SciTech Connect

    Parazin, R.J.

    1996-09-30

    The DOE-RL is pursuing a new business strategy of hiring private contractors for treatment of Hanford Site tank wastes. This strategy is called `privatization` and includes design, permitting, construction, operation and deactivation of facilities for tank waste treatment. The TWRS Privatization Infrastructure Project consists of several sub-projects which will provide key services needed to support the privatization mission. This master site plan presently describes all pertinent aspects of the site and identifies all planned provisions for site development, utilities and other site services. It is a baseline document which will be revised as privatization proceeds through design, construction and start-up.

  12. Master-Oscillator/Power-Amplifier Laser System

    NASA Technical Reports Server (NTRS)

    Yu, Anthony W.; Krainak, Michael A.; Unger, Glenn L.

    1994-01-01

    Master-oscillator/power-amplifier (MOPA) laser system operates in continuous-wave mode or in amplitude-modulation (e.g., pulse) mode by modulation of oscillator current. Power amplifier is laser-diode-pumped neodymium:yttrium lithium fluoride (Nd:YLF) laser; oscillator is laser diode. Offers relatively high efficiency and power. Because drive current to oscillator modulated, external electro-optical modulator not needed. Potential uses include free-space optical communications, coded laser ranging, and generation of high-power, mode-locked pulses.

  13. The antioxidant master glutathione and periodontal health

    PubMed Central

    Bains, Vivek Kumar; Bains, Rhythm

    2015-01-01

    Glutathione, considered to be the master antioxidant (AO), is the most-important redox regulator that controls inflammatory processes, and thus damage to the periodontium. Periodontitis patients have reduced total AO capacity in whole saliva, and lower concentrations of reduced glutathione (GSH) in serum and gingival crevicular fluid, and periodontal therapy restores the redox balance. Therapeutic considerations for the adjunctive use of glutathione in management of periodontitis, in limiting the tissue damage associated with oxidative stress, and enhancing wound healing cannot be underestimated, but need to be evaluated further through multi-centered randomized controlled trials. PMID:26604952

  14. The Survivor Master Narrative in Sexual Assault.

    PubMed

    Muldoon, Shane D; Taylor, S Caroline; Norma, Caroline

    2016-04-01

    This article is based on data drawn from 90 Victoria Police operational files covering the period 2004-2008. Several thematic responses by sexual assault survivors are described as forming a master narrative of "identity shock." It is argued that the "minor/serious" sexual assault legal distinction is meaningless to survivors and conceals a shared felt experience. It is also argued that sexual assault is fundamentally a "public issue" of betrayal of citizen trust--not just a collection of "private troubles"--and that effective resolutions require more than individualized therapeutic and criminal justice measures. PMID:26721902

  15. Master stability analysis in transient spatiotemporal chaos.

    PubMed

    Wackerbauer, Renate

    2007-11-01

    The asymptotic stability of spatiotemporal chaos is difficult to determine, since transient spatiotemporal chaos may be extremely long lived. A master stability analysis reveals that the asymptotic state of transient spatiotemporal chaos in the Gray-Scott system and in the Bär-Eiswirth system is characterized by negative transverse Lyapunov exponents on the attractor of the invariant synchronization manifold. The average lifetime of transient spatiotemporal chaos depends on the number of transverse directions that are unstable along a typical excitation cycle. PMID:18233739

  16. Poiseuille flow in curved spaces

    NASA Astrophysics Data System (ADS)

    Debus, J.-D.; Mendoza, M.; Succi, S.; Herrmann, H. J.

    2016-04-01

    We investigate Poiseuille channel flow through intrinsically curved media, equipped with localized metric perturbations. To this end, we study the flux of a fluid driven through the curved channel in dependence of the spatial deformation, characterized by the parameters of the metric perturbations (amplitude, range, and density). We find that the flux depends only on a specific combination of parameters, which we identify as the average metric perturbation, and derive a universal flux law for the Poiseuille flow. For the purpose of this study, we have improved and validated our recently developed lattice Boltzmann model in curved space by considerably reducing discrete lattice effects.

  17. Poiseuille flow in curved spaces.

    PubMed

    Debus, J-D; Mendoza, M; Succi, S; Herrmann, H J

    2016-04-01

    We investigate Poiseuille channel flow through intrinsically curved media, equipped with localized metric perturbations. To this end, we study the flux of a fluid driven through the curved channel in dependence of the spatial deformation, characterized by the parameters of the metric perturbations (amplitude, range, and density). We find that the flux depends only on a specific combination of parameters, which we identify as the average metric perturbation, and derive a universal flux law for the Poiseuille flow. For the purpose of this study, we have improved and validated our recently developed lattice Boltzmann model in curved space by considerably reducing discrete lattice effects. PMID:27176437

  18. Analysis of picosecond laser induced fluorescence phenomena in photosynthetic membranes utilizing a master equation approach.

    PubMed Central

    Paillotin, G; Swenberg, C E; Breton, J; Geacintov, N E

    1979-01-01

    A Pauli master equation is formulated and solved to describe the fluorescence quantum yield, phi, and the fluorescence temporal decay curves. F(t), obtained in picosecond laser excitation experiments of photosynthetic systems. It is assumed that the lowering of phi with increasing pulse intensity is due to bimolecular singlet exciton annihilation processes which compete with the monomolecular exciton decay processes; Poisson statistics are taken into account. Calculated curves of phi as a function of the number of photon hits per domain are compared with experimental data, and it is concluded that these domains contain at least two to four connected photosynthetic units (depending on the temperature), where each photosynthetic unit is assumed to contain approximately 300 pigment molecules. It is shown that under conditions of high excitation intensities, the fluorescence decays approximately according to the (time)1/2 law. PMID:262402

  19. Analysis of picosecond laser induced fluorescence phenomena in photosynthetic membranes utilizing a master equation approach.

    PubMed

    Paillotin, G; Swenberg, C E; Breton, J; Geacintov, N E

    1979-03-01

    A Pauli master equation is formulated and solved to describe the fluorescence quantum yield, phi, and the fluorescence temporal decay curves. F(t), obtained in picosecond laser excitation experiments of photosynthetic systems. It is assumed that the lowering of phi with increasing pulse intensity is due to bimolecular singlet exciton annihilation processes which compete with the monomolecular exciton decay processes; Poisson statistics are taken into account. Calculated curves of phi as a function of the number of photon hits per domain are compared with experimental data, and it is concluded that these domains contain at least two to four connected photosynthetic units (depending on the temperature), where each photosynthetic unit is assumed to contain approximately 300 pigment molecules. It is shown that under conditions of high excitation intensities, the fluorescence decays approximately according to the (time)1/2 law. PMID:262402

  20. Reference Frames and Relativity.

    ERIC Educational Resources Information Center

    Swartz, Clifford

    1989-01-01

    Stresses the importance of a reference frame in mechanics. Shows the Galilean transformation in terms of relativity theory. Discusses accelerated reference frames and noninertial reference frames. Provides examples of reference frames with diagrams. (YP)

  1. The Role of Master's Institutions in Developing Researchers: Rethinking the Master Plan

    ERIC Educational Resources Information Center

    Rikli, Roberta E.

    2009-01-01

    In our increasingly complex society, research and research training in master's institutions is just as critical as in doctoral programs, but with a different emphasis and purpose. In PhD institutions, research programs are generally considered to be for the purpose of advancing knowledge in the discipline and helping to prepare the next…

  2. Efficacy of Reciproc® and Profile® Instruments in the Removal of Gutta-Percha from Straight and Curved Root Canals ex Vivo

    PubMed Central

    Marfisi, Karem; Plotino, Gianluca; Clavel, Tatiana; Duran-Sindreu, Fernando; Roig, Miguel

    2015-01-01

    ABSTRACT Objectives To compare the efficacy of Reciproc® (VDW GmbH) and ProFile® (Dentsply Maillefer) instruments at removing gutta-percha from straight and curved root canals ex vivo filled using the cold lateral condensation and GuttaMaster® (VDW GmbH) techniques. Material and Methods Forty mesial roots of mandibular molars with two curved canals and 80 single-rooted teeth with straight root canals, a total of 160 root canals, were randomly assigned to eight groups (canals per group = 20) according to filling technique, retreatment instrument and root canal curvature as follows: Group I, cold lateral condensation/ProFile®/straight; Group II, cold lateral condensation/ProFile®/curved; Group III, cold lateral condensation/Reciproc®/straight; Group IV, cold lateral condensation/Reciproc®/curved; Group V, GuttaMaster®/ProFile®/straight; Group VI, GuttaMaster®/ProFile®/curved; Group VII, GuttaMaster®/Reciproc®/straight; and Group VIII, GuttaMaster®/Reciproc®/curved. The following data were recorded: procedural errors, retreatment duration and canal wall cleanliness. Means and standard deviations were calculated and analysed using the Kruskal-Wallis test, one-way analysis of variance and Tukey’s test (P < 0.05). Results Reciproc® instruments were significantly faster than ProFile® instruments at removing GuttaMaster® from both straight (P = 0.0001) and curved (P = 0.0003) root canals. Reciproc® were statistically more effective than ProFile® instruments in removing GuttaMaster® from straight root canals (P = 0.021). Regardless of filling technique or retreatment instrument, gutta-percha was removed more rapidly from curved than from straight root canals (P = 0.0001). Conclusions Neither system completely removed filling material from the root canals. Compared with ProFile® instruments, Reciproc® instruments removed GuttaMaster® filling material from straight and curved root canals more rapidly. PMID:26539283

  3. Curved characteristics behind blast waves.

    NASA Technical Reports Server (NTRS)

    Laporte, O.; Chang, T. S.

    1972-01-01

    The behavior of nonisentropic flow behind a propagating blast wave is theoretically studied. Exact solutions, expressed in closed form in terms of elementary functions, are presented for three sets of curved characteristicseind a self-similar, strong blast wave.

  4. Parabolic curves in Lie groups

    SciTech Connect

    Pauley, Michael

    2010-05-15

    To interpolate a sequence of points in Euclidean space, parabolic splines can be used. These are curves which are piecewise quadratic. To interpolate between points in a (semi-)Riemannian manifold, we could look for curves such that the second covariant derivative of the velocity is zero. We call such curves Jupp and Kent quadratics or JK-quadratics because they are a special case of the cubic curves advocated by Jupp and Kent. When the manifold is a Lie group with bi-invariant metric, we can relate JK-quadratics to null Lie quadratics which arise from another interpolation problem. We solve JK-quadratics in the Lie groups SO(3) and SO(1,2) and in the sphere and hyperbolic plane, by relating them to the differential equation for a quantum harmonic oscillator00.

  5. Strategies for Pursuing a Master's Degree.

    PubMed

    Thomas, Cynthia M; McIntosh, Constance E; Mensik, Jennifer S

    2016-01-01

    Health care has become very complex and is in a constant state of change. As a result of the evolving change and increasing complexity, a more educated nursing workforce is needed (Dracup K. Master's nursing programs. American Association of Colleges of Nursing. 2015; Institute of Medicine. The Future of Nursing: Leading Change, Advancing Health. 2010). It is now becoming necessary for registered nurses to earn an advanced degree to work at the highest level of their practice authority (Dracup K. Master's nursing programs. American Association of Colleges of Nursing. 2015; Institute of Medicine. The Future of Nursing: Leading Change, Advancing Health. 2010.). Preparing to reenter college may be an overwhelming prospect for some registered nurses seeking an advanced degree. However, there are some simple strategies that may help sort out the many degree options, financial obligations, decisions about brick and mortar versus online learning, commitment to degree completion, and changing career paths. This article will provide the registered nurse valuable information that will assist in the exciting process of returning to college. PMID:27043400

  6. Vitamin supplementation benefits in master athletes.

    PubMed

    Brisswalter, Jeanick; Louis, Julien

    2014-03-01

    Master athletes are more than 35 years of age and continue to train as hard as their young counterparts despite the aging process. All life long, they are capable of accomplishing exceptional sporting performances. For these participants in endurance events, matching energy intake and expenditure is critical to maintain health and performance. The proportions of carbohydrate, fat, and protein must be optimized to provide enough calories to sustain the energy requirements of competition or training, and for recovery. In addition, endurance athletes must include adequate vitamins and minerals in their diets to maintain healthy immune function. Vitamins and minerals may be sufficient in the diets of endurance athletes, who have a high energy intake. This would make it unnecessary to use vitamin and mineral supplements. Furthermore, one major limitation for these athletes is the management of oxidative stress, which, when in excess, can be deleterious for the organism. For individuals exposed to oxidative stress, micronutritional supplementations rich in vitamins and minerals can be also an alternative strategy. Although these supplementations are increasingly used by master athletes, very few data are available on their effects on oxidative stress, muscle recovery, and physical performance. The potential benefits of supplement use in athletes are thus questionable. Some studies indicate no benefits, while others highlight potential negative side effects of vitamin supplementation. Additional studies are warranted in order to design adapted prescriptions in antioxidant vitamins and minerals. PMID:24323888

  7. NASA directives master list and index

    NASA Technical Reports Server (NTRS)

    1995-01-01

    This handbook sets forth in two parts, Master List of Management Directives and Index to NASA Management Directives, the following information for the guidance of users of the NASA Management Directives System. Chapter 1 contains introductory information material on how to use this handbook. Chapter 2 is a complete master list of agencywide management directives, describing each directive by type, number, effective date, expiration date, title, and organization code of the office responsible for the directive. Chapter 3 includes a consolidated numerical list of all delegations of authority and a breakdown of such delegation by the office or center to which special authority is assigned. Chapter 4 sets forth a consolidated list of all NASA handbooks (NHB's) and important footnotes covering the control and ordering of such documents. Chapter 5 is a consolidated list of NASA management directives applicable to the Jet Propulsion Laboratory. Chapter 6 is a consolidated list of NASA regulations published in the Code of Federal Regulations. Chapter 7 is a consolidated list of NASA regulations published in Title 14 of the Code of Federal Regulations. Complementary manuals to the NASA Management Directives System are described in Chapter 8. The second part contains an in depth alphabetical index to all NASA management directives other than handbooks, most of which are indexed by titles only.

  8. Macrophages: Master Regulators of Inflammation and Fibrosis

    PubMed Central

    Wynn, Thomas A.; Barron, Luke

    2010-01-01

    Macrophages are found in close proximity with collagen-producing myofibroblasts and indisputably play a key role in fibrosis. They produce profibrotic mediators that directly activate fibroblasts, including transforming growth factor-β1 and platelet-derived growth factor, and control extracellular matrix turnover by regulating the balance of various matrix metalloproteinases and tissue inhibitors of matrix metalloproteinases. Macrophages also regulate fibrogenesis by secreting chemokines that recruit fibroblasts and other inflammatory cells. With their potential to act in both a pro- and antifibrotic capacity, as well as their ability to regulate the activation of resident and recruited myofibroblasts, macrophages and the factors they express are integrated into all stages of the fibrotic process. These various, and sometimes opposing, functions may be performed by distinct macrophage subpopulations, the identification of which is a growing focus of fibrosis research. Although collagen-secreting myofibroblasts once were thought of as the master “producers” of fibrosis, this review will illustrate how macrophages function as the master “regulators” of fibrosis. PMID:20665377

  9. Solution of Chemical Master Equations for Nonlinear Stochastic Reaction Networks

    PubMed Central

    Smadbeck, Patrick; Kaznessis, Yiannis N.

    2014-01-01

    Stochasticity in the dynamics of small reacting systems requires discrete-probabilistic models of reaction kinetics instead of traditional continuous-deterministic ones. The master probability equation is a complete model of randomly evolving molecular populations. Because of its ambitious character, the master equation remained unsolved for all but the simplest of molecular interaction networks. With the first solution of chemical master equations, a wide range of experimental observations of small-system interactions may be mathematically conceptualized. PMID:25215268

  10. MASTER Detection of Two Cataclysmic Variables in One Image

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Gorbovskoy, E.; Tiurina, N.; Denisenko, D.; Kuznetsov, A.; Pruzhinskaya, M.; Rufanov, A.; Vladimirov, V.; Kornilov, V. G.; Gres, O.; Ivanov, K.; Yazev, S.; Budnev, N.; Poleshchuk, V.; Parkhomenko, E. Konstantinov A.; Tlatov, A.; Dormidontov, D.; Senik, V.; Yurkov, V.; Sergienko, Y.; Varda, D.; Sinyakov, E.; Gabovich, A.; Krushinsky, V.; Zalozhnih, I.; Popov, A.; Bourdanov, A.; Buckley, D.; Potter, S.; Kniazev, A.; Kotze, M.; Shumkov, V.; Shurpakov, S.

    2015-01-01

    The following two objects were found on the same images by MASTER-Tunka robotic telescope (2x2 deg field of view) and are separated by 55'. MASTER OT J015746.16+511023.2 - independent discovery of ASASSN-15aw MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 01h 57m 46.16s +51d 10m 23.2s on 2015-01-18.65101 UT.

  11. Flow over riblet curved surfaces

    NASA Astrophysics Data System (ADS)

    Loureiro, J. B. R.; Silva Freire, A. P.

    2011-12-01

    The present work studies the mechanics of turbulent drag reduction over curved surfaces by riblets. The effects of surface modification on flow separation over steep and smooth curved surfaces are investigated. Four types of two-dimensional surfaces are studied based on the morphometric parameters that describe the body of a blue whale. Local measurements of mean velocity and turbulence profiles are obtained through laser Doppler anemometry (LDA) and particle image velocimetry (PIV).

  12. Definitions of components of the master water data index maintained by the National Water Data Exchange

    USGS Publications Warehouse

    Perry, R.A.; Williams, O.O.

    1982-01-01

    The Master Water Data Index is a computerized data base developed and maintained by the National Water Data Exchange (NAWDEX). The Index contains information about water-data collection sites. This information includes: the identification of new sites for which water data are available, the locations of these sites, the type of site, the data-collection organization, the types of data available, the major water-data parameters for which data are available, the frequency at which these parameters are measured, the period of time for which data are available, and the medial in which the data are stored. This document, commonly referred to as the MWDI data dictionary, contains a definition and description of each component of the Master Water Data Index data base. (USGS)

  13. Sleeping porch through french doors off master bedroom (southern unit) ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Sleeping porch through french doors off master bedroom (southern unit) - Fitzsimons General Hospital, Officers' Quarters, West Charlie Kelly Boulevard & South Hutton Street, Southwest Corner, Aurora, Adams County, CO

  14. Naval Computer & Telecommunications Area Master Station, Eastern Pacific, Radio ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Naval Computer & Telecommunications Area Master Station, Eastern Pacific, Radio Transmitter Facility Lualualei, Marine Barracks, Intersection of Tower Drive & Morse Street, Makaha, Honolulu County, HI

  15. Cochlear microphonic broad tuning curves

    NASA Astrophysics Data System (ADS)

    Ayat, Mohammad; Teal, Paul D.; Searchfield, Grant D.; Razali, Najwani

    2015-12-01

    It is known that the cochlear microphonic voltage exhibits much broader tuning than does the basilar membrane motion. The most commonly used explanation for this is that when an electrode is inserted at a particular point inside the scala media, the microphonic potentials of neighbouring hair cells have different phases, leading to cancelation at the electrodes location. In situ recording of functioning outer hair cells (OHCs) for investigating this hypothesis is exceptionally difficult. Therefore, to investigate the discrepancy between the tuning curves of the basilar membrane and those of the cochlear microphonic, and the effect of phase cancellation of adjacent hair cells on the broadness of the cochlear microphonic tuning curves, we use an electromechanical model of the cochlea to devise an experiment. We explore the effect of adjacent hair cells (i.e., longitudinal phase cancellation) on the broadness of the cochlear microphonic tuning curves in different locations. The results of the experiment indicate that active longitudinal coupling (i.e., coupling with active adjacent outer hair cells) only slightly changes the broadness of the CM tuning curves. The results also demonstrate that there is a π phase difference between the potentials produced by the hair bundle and the soma near the place associated with the characteristic frequency based on place-frequency maps (i.e., the best place). We suggest that the transversal phase cancellation (caused by the phase difference between the hair bundle and the soma) plays a far more important role than longitudinal phase cancellation in the broadness of the cochlear microphonic tuning curves. Moreover, by increasing the modelled longitudinal resistance resulting the cochlear microphonic curves exhibiting sharper tuning. The results of the simulations suggest that the passive network of the organ of Corti determines the phase difference between the hair bundle and soma, and hence determines the sharpness of the

  16. Instrumentation for automated acquisition and analysis of TLD glow curves

    NASA Astrophysics Data System (ADS)

    Bostock, I. J.; Kennett, T. J.; Harvey, J. W.

    1991-04-01

    Instrumentation for the automated and complete acquisition of thermoluminescent dosimeter (TLD) data from a Panasonic UD-702E TLD reader is reported. The system that has been developed consists of both hardware and software components and is designed to operate with an IBM-type personal computer. Acquisition of glow curve, timing, and heating data has been integrated with elementary numerical analysis to permit real-time validity and diagnostic assessments to be made. This allows the optimization of critical parameters such as duration of the heating cycles and the time window for the integration of the dosimetry peak. The form of the Li 2B 4O 7:Cu TLD glow curve has been studied and a mathematical representation devised to assist in the implementation of automated analysis. Differences in the shape of the curve can be used to identify dosimetry peaks due to artifacts or to identify failing components. Examples of the use of this system for quality assurance in the TLD monitoring program at McMaster University are presented.

  17. The Navstar GPS master control station's Kalman filter experience

    NASA Technical Reports Server (NTRS)

    Scardera, Michael P.

    1990-01-01

    The Navstar Global Positioning System (GPS) is a highly accurate space based navigation system providing all weather, 24 hour a day service to both military and civilian users. The system provides a Gaussian position solution with four satellites, each providing its ephemeris and clock offset with respect to GPS time. The GPS Master Clock Station (MCS) is charged with tracking each Navstar spacecraft and precisely defining the ephemeris and clock parameters for upload into the vehicle's navigation message. Briefly described here are the Navstar system and the Kalman filter estimation process used by MCS to determine, predict, and ensure quality control for each of the satellite's ephemeris and clock states. Routine performance is shown. Kalman filter reaction and response is discussed for anomalous clock behavior and trajectory perturbations. Particular attention is given to MCS efforts to improve orbital adjust modeling. The satellite out of service time due to orbital maneuvering has been reduced in the past year from four days to under twelve hours. The planning, reference trajectory model, and Kalman filter management improvements are explained.

  18. Master environmental plan for Fort Devens, Massachusetts

    SciTech Connect

    Biang, C.A.; Peters, R.W.; Pearl, R.H.; Tsai, S.Y. . Energy Systems Div.)

    1991-11-01

    Argonne National Laboratory has prepared a master environmental plan (MEP) for Fort Devens, Massachusetts, for the US Army Toxic and Hazardous Materials Agency. The MEP is an assessment based on environmental laws and regulations of both the federal government and the Commonwealth of Massachusetts. The MEP assess the physical and environmental status of 58 potential hazardous waste sites, including 54 study areas (SAs) that pose a potential for releasing contamination into the environment and 4 areas of concern (AOCs) that are known to have substantial contamination. For each SA or AOC, this MEP describes the known history and environment, identifies additional data needs, and proposes possible response actions. Most recommended response actions consist of environmental sampling and monitoring and other characterization studies. 74 refs., 63 figs., 50 tabs.

  19. Collaborative development of Estonian nuclear master's program

    SciTech Connect

    Tkaczyk, A. H.; Kikas, A.; Realo, E.; Kirm, M.; Kiisk, M.; Isakar, K.; Suursoo, S.; Koch, R.; Feldbach, E.; Lushchik, A.; Reivelt, K.

    2012-07-01

    In 2009 Estonia approved the National Development Plan for the Energy Sector, including the nuclear energy option. This can be realized by construction of a nuclear power plant (NPP) in Estonia or by participation in neighboring nuclear projects (e.g., Lithuania and/or Finland). Either option requires the availability of competent personnel. It is necessary to prepare specialists with expertise in all aspects related to nuclear infrastructure and to meet workforce needs (e.g. energy enterprises, public agencies, municipalities). Estonia's leading institutions of higher education and research with the support of the European Social Fund have announced in this context a new nuclear master's curriculum to be developed. The language of instruction will be English. (authors)

  20. Structural master plan of flood mitigation measures

    NASA Astrophysics Data System (ADS)

    Heidari, A.

    2009-01-01

    Flood protection is one of the practical methods in damage reduction. Although it not possible to be completely protected from flood disaster but major part of damages can be reduced by mitigation plans. In this paper, the optimum flood mitigation master plan is determined by economic evaluation in trading off between the construction costs and expected value of damage reduction as the benefits. Size of the certain mitigation alternative is also be obtained by risk analysis by accepting possibility of flood overtopping. Different flood mitigation alternatives are investigated from various aspects in the Dez and Karun river floodplain areas as a case study in south west of IRAN. The results show that detention dam and flood diversion are the best alternatives of flood mitigation methods as well as enforcing the flood control purpose of upstream multipurpose reservoirs. Dyke and levees are not mostly justifiable because of negative impact on down stream by enhancing routed flood peak discharge magnitude and flood damages as well.

  1. Master Equations for Correlated Quantum Channels

    NASA Astrophysics Data System (ADS)

    Giovannetti, V.; Palma, G. M.

    2012-01-01

    We derive the general form of a master equation describing the reduced time evolution of a sequence of subsystems “propagating” in an environment which can be described as a sequence of subenvironments. The interaction between subsystems and subenvironments is described in terms of a collision model, with the irreversible dynamics of the subenvironments between collisions explicitly taken into account. In the weak coupling regime, we show that the collisional model produces a correlated Markovian evolution for the joint density matrix of the multipartite system. The associated Lindblad superoperator contains pairwise terms describing cross correlation between the different subsystems. Such a model can describe a broad range of physical situations, ranging from quantum channels with memory to photon propagation in concatenated quantum optical systems.

  2. Epidemics in networks: a master equation approach

    NASA Astrophysics Data System (ADS)

    Cotacallapa, M.; Hase, M. O.

    2016-02-01

    A problem closely related to epidemiology, where a subgraph of ‘infected’ links is defined inside a larger network, is investigated. This subgraph is generated from the underlying network by a random variable, which decides whether a link is able to propagate a disease/information. The relaxation timescale of this random variable is examined in both annealed and quenched limits, and the effectiveness of propagation of disease/information is analyzed. The dynamics of the model is governed by a master equation and two types of underlying network are considered: one is scale-free and the other has exponential degree distribution. We have shown that the relaxation timescale of the contagion variable has a major influence on the topology of the subgraph of infected links, which determines the efficiency of spreading of disease/information over the network.

  3. MASTER OT 015347+303844 discovery

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Gorbovskoy, E.; Lipunov, V.; Kornilov, V.; Belinski, A.; Shatskiy, N.; Tyurina, N.; Kuvshinov, D.; Chazov, V.; Kuznetsov, A.; Zimnukhov, D.; Kornilov, M.; Tlatov, A.; Parhomenko, A. V.; Dormidontov, D.; Yurkov, V.; Sergienko, Yu.; Varda, D.; Krushinski, V.; Zalozhnih, I.; Kopytova, T.; Popov, A.; Ivanov, K.; Yazev, S.; Budnev, N.; Konstantinov, E.; Lenok, V.; Chuvalaev, O.; Poleschuk, V.; Gres, O.

    2010-10-01

    MASTER auto-detection system at Kislovodsk detected a new transient source at the position (R.A., Dec) = 01h 53m 47.24s , +30d 38m 44s.0 (J2000) with a typical uncertainty of 0.2" at 2010-10-01 23:25:48 (UT). The V magnitude is about 17.9 +-0.1 ( exposition 180s, m_lim = 19.0 ). The OT is seen at next 7 images up 2010-10-12 in R and V. OT is blue: R-V=1.43 at 2010-10-01.9 . There is no minor planet and any object brighter 21 mag in DSS at this place.

  4. Personal health benefits of Masters athletics competition.

    PubMed Central

    Shephard, R J; Kavanagh, T; Mertens, D J; Qureshi, S; Clark, M

    1995-01-01

    Questionnaires (750 respondents, 44.4% response rate) examined the long-term health value of endurance exercise training in older age-classed competitors ('Masters Athletes', 551 men and 199 women) over a 7-year period (1985-1992). The majority had initially completed maximal exercise tests. The weekly time devoted to training, competition and exercise-related travel was 10 to 30 h, and the annual expenditure on clothing, equipment and entrance fees was typically in the range Canadian $500-1500. Despite their age (mean(s.d.) 58(10), current range 40-81 years), only 1.4% reported sustaining a non-fatal heart attack and 0.6% had required bypass surgery over the 7-year interval. The majority (90%) were very interested in good health; 76% considered themselves as less vulnerable to viral illnesses than their peers, and 68% regarded their quality of life as much better than that of their sedentary friends. The majority of former smokers had stopped smoking before they began training, but 37% indicated that exercise had helped them in smoking withdrawal. In keeping with their health-conscious attitude, 59% had regular medical check-ups, and 86% obeyed legislation requiring use of a seat-belt when driving. In contrast with many older people, 88% slept well or very well. Slightly over half of the sample (57%) had sustained some injury which had limited their training for one or more weeks over the 7-year study. Although participation in Masters competition appears to carry considerable health benefits, gains may in part reflect an overall healthy lifestyle. PMID:7788216

  5. NASA directives master list and index

    NASA Technical Reports Server (NTRS)

    1993-01-01

    This Handbook sets forth in two parts the following information for the guidance of users of the NASA Management Directives System. Part A is a master list of management directives in force as of March 31, 1993. Chapter 1 contains introductory informative material on how to use this Handbook. Chapter 2 is a complete master list of Agencywide management directives, describing each directive by type, number, effective date, expiration date, title, and organization code of the office responsible for the directive. Chapter 3 includes a consolidated numerical list of all delegations of authority and a breakdown of such delegation by the office or installation to which special authority is assigned. Chapter 4 sets forth a consolidated list of all NASA Handbooks (NHB's) and important footnotes covering the control and ordering of such documents. Chapter 5 is a consolidated list of NASA management directives applicable to the Jet Propulsion Laboratory. Chapter 6 is a consolidated list of NASA management directives published in the Code of Federal Regulations. Complementary manuals to the NASA Management Directives System are described in Chapter 7. Part B is the index to NASA management directives in force as of March 31, 1993. This part contains an in-depth alphabetical index to all NASA management directives other than Handbooks. NHB's 1610.6, 'NASA Personnel Security Handbook,' 1620.3, 'NASA Physical Security Handbook,' 1640.4, 'NASA Information Security Program,' 1900.1, 'Standards of Conduct for NASA Employees,' 5103.6, 'Source Evaluation Board Handbook,' and 7400.1, 'Budget Administration Manual,' are indexed in-depth. All other NHB's are indexed by titles only.

  6. Computers and Reference Service.

    ERIC Educational Resources Information Center

    Purcell, Royal

    1989-01-01

    Discusses the current status and potential for automated library reference services in the areas of community information systems, online catalogs, remote online reference services, and telephone reference services. Several models of the reference procedure which might be used in developing expert systems are examined. (19 references) (CLB)

  7. Reference Service Policy Statement.

    ERIC Educational Resources Information Center

    Young, William F.

    This reference service policy manual provides general guidelines to encourage reference service of the highest possible quality and to insure uniform practice. The policy refers only to reference service in the University Libraries and is intended for use in conjunction with other policies and procedures issued by the Reference Services Division.…

  8. Relative Locality in Curved Spacetime

    NASA Astrophysics Data System (ADS)

    Kowalski-Glikman, Jerzy; Rosati, Giacomo

    2013-07-01

    In this paper we construct the action describing dynamics of the particle moving in curved spacetime, with a nontrivial momentum space geometry. Curved momentum space is the core feature of theories where relative locality effects are present. So far aspects of nonlinearities in momentum space have been studied only for flat or constantly expanding (de Sitter) spacetimes, relying on their maximally symmetric nature. The extension of curved momentum space frameworks to arbitrary spacetime geometries could be relevant for the opportunities to test Planck-scale curvature/deformation of particles momentum space. As a first example of this construction we describe the particle with κ-Poincaré momentum space on a circular orbit in Schwarzschild spacetime, where the contributes of momentum space curvature turn out to be negligible. The analysis of this problem relies crucially on the solution of the soccer ball problem.

  9. Phase nucleation in curved space

    NASA Astrophysics Data System (ADS)

    Gómez, Leopoldo; García, Nicolás; Vitelli, Vincenzo; Lorenzana, José; Daniel, Vega

    Nucleation and growth is the dominant relaxation mechanism driving first-order phase transitions. In two-dimensional flat systems, nucleation has been applied to a wide range of problems in physics, chemistry and biology. Here we study nucleation and growth of two-dimensional phases lying on curved surfaces and show that curvature modifies both critical sizes of nuclei and paths towards the equilibrium phase. In curved space, nucleation and growth becomes inherently inhomogeneous and critical nuclei form faster on regions of positive Gaussian curvature. Substrates of varying shape display complex energy landscapes with several geometry-induced local minima, where initially propagating nuclei become stabilized and trapped by the underlying curvature (Gómez, L. R. et al. Phase nucleation in curved space. Nat. Commun. 6:6856 doi: 10.1038/ncomms7856 (2015).).

  10. 48 CFR 217.7103 - Master agreements and job orders.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Master agreements and job orders. 217.7103 Section 217.7103 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS... Agreement for Repair and Alteration of Vessels 217.7103 Master agreements and job orders....

  11. 48 CFR 217.7103 - Master agreements and job orders.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Master agreements and job orders. 217.7103 Section 217.7103 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS... Agreement for Repair and Alteration of Vessels 217.7103 Master agreements and job orders....

  12. 48 CFR 217.7103 - Master agreements and job orders.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Master agreements and job orders. 217.7103 Section 217.7103 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS... Agreement for Repair and Alteration of Vessels 217.7103 Master agreements and job orders....

  13. 48 CFR 217.7103 - Master agreements and job orders.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Master agreements and job orders. 217.7103 Section 217.7103 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS... Agreement for Repair and Alteration of Vessels 217.7103 Master agreements and job orders....

  14. 48 CFR 217.7103 - Master agreements and job orders.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Master agreements and job orders. 217.7103 Section 217.7103 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS... Agreement for Repair and Alteration of Vessels 217.7103 Master agreements and job orders....

  15. Teaching Communications Online Using the Master Teacher Model.

    ERIC Educational Resources Information Center

    Wilhelm, William J.

    2003-01-01

    Indiana State University's business school online education program uses the Master Teacher Model adopted from the Open University. The model employs a hierarchy of instructors: program director, master teacher, and adjunct faculty. Methods include case analyses, threaded discussions, and e-mail for interactive group communication. (Contains 10…

  16. 19 CFR 10.90 - Master records and metal matrices.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 1 2012-04-01 2012-04-01 false Master records and metal matrices. 10.90 Section 10.90 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. General Provisions Master Records, and Metal Matrices § 10.90...

  17. 19 CFR 10.90 - Master records and metal matrices.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... made, of each master record or metal matrix covered thereby. (c) A bond on Customs Form 301, containing... manufacture of sound records for export purposes, or upon satisfactory proof that the master records or metal matrices obtained therefrom have been exported or destroyed under Customs supervision, and that all...

  18. 19 CFR 10.90 - Master records and metal matrices.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... made, of each master record or metal matrix covered thereby. (c) A bond on Customs Form 301, containing... manufacture of sound records for export purposes, or upon satisfactory proof that the master records or metal matrices obtained therefrom have been exported or destroyed under Customs supervision, and that all...

  19. 19 CFR 10.90 - Master records and metal matrices.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... made, of each master record or metal matrix covered thereby. (c) A bond on Customs Form 301, containing... manufacture of sound records for export purposes, or upon satisfactory proof that the master records or metal matrices obtained therefrom have been exported or destroyed under Customs supervision, and that all...

  20. 21 CFR 874.3330 - Master hearing aid.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Master hearing aid. 874.3330 Section 874.3330 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3330 Master hearing aid. (a)...

  1. 21 CFR 874.3330 - Master hearing aid.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Master hearing aid. 874.3330 Section 874.3330 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3330 Master hearing aid. (a)...

  2. 21 CFR 874.3330 - Master hearing aid.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Master hearing aid. 874.3330 Section 874.3330 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3330 Master hearing aid. (a)...

  3. 21 CFR 874.3330 - Master hearing aid.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Master hearing aid. 874.3330 Section 874.3330 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3330 Master hearing aid. (a)...

  4. 21 CFR 874.3330 - Master hearing aid.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Master hearing aid. 874.3330 Section 874.3330 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3330 Master hearing aid. (a)...

  5. MASTER-IAC: possible Nova in M31

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Lopez, R. Rebolo; Ricart, M. Serra; Israelian, G.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Gress, O.; Vladimirov, V.; Kuvshinov, D.

    2016-06-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 00h 41m 17.95s +40d 33m 52.9s on 2016-06-14.19236 UT. The OT unfiltered magnitude is 18.7m (limit 20.0m).

  6. MASTER: bright PSN and bright dwarf novae outbursts

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Gress, O.; Lipunov, V.; Lopez, R. Rebolo; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Ricart, M. Serra; Israelyan, G.; Potter, S.; Kniazev, A.; Budnev, N.; Ivanov, K.

    2016-06-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 21h 12m 23.35s +14d 46m 45.1s on 2016-06-21.08257 UT. The OT unfiltered magnitude is 16.2m (limit 18.1m).

  7. Participation in a Master Class: Experiences of Older Amateur Pianists

    ERIC Educational Resources Information Center

    Taylor, Angela

    2010-01-01

    Although many amateur performers enjoy participating in master classes, we know little about what it means to them. The aim of this paper is to investigate learning in a master class with amateur pianists from an emic perspective in order to increase knowledge and understanding about older music learners engaging with instrumental tuition. The…

  8. Master's Degree "Educating in Diversity" (MDED): Toward Inclusion Education Quality

    ERIC Educational Resources Information Center

    Alegre, Olga M.; Villar, Luis M.

    2010-01-01

    Special education master's degrees are proliferating, most probably in response to the requirement for all special education teachers to be highly qualified. The aim of the study is to evaluate the 10-year Master's Degree "Educating in Diversity" (MDED) at the University of La Laguna (ULL) and to examine the extent to which the development of…

  9. MASTER-OAFA: 2 new dwarf nova outbursts

    NASA Astrophysics Data System (ADS)

    Pogrosheva, T.; Lipunov, V.; Podesta, R. C.; Levato, O. H.; Mallamaci, C.; Lopez, C.; Podesta, F.; Saffe, C.; Gorbovskoy, E.; Tyurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gress, O.; Ivanov, K.; Shumkov, V.; Kuvshinov, D.; Vladimirov, V.

    2016-08-01

    MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 18h 33m 51.4s -67d 56m 37.7s on 2016-08-22.072UT.

  10. MASTER-IAC: PSN in PGC1671957 and bright OT

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Lipunov, V.; Rebolo Lopez, R.; Serra Ricart, M.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Gress, O.; Ivanov, K.; Shumkov, V.

    2016-09-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 23h 36m 08.12s +22d 32m 33.1s on 2016-09-07.05299 UT. The OT unfiltered magnitude is 17.8m (limit 20.1m).

  11. MASTER-IAC: bright QSO flare and OT discovery

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Popova, E.; Gress, O.; Lipunov, V.; Lopez, R. Rebolo; Serra-Ricart, M.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Kuvshinov, D.; Vlasenko, D.; Chazov, V.; Israelyan, G.; Lodieu, N.; Budnev, N.; Ivanov, K.; Shurpakov, S.

    2016-07-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )discovered OT source at (RA, Dec) = 19h 18m 40.69s +42d 21m 03.3s on 2016-07-25.00863 UT. The OT magnitude in unfiltered is 17.9m (limit 18.7m).

  12. MASTER-IAC: very bright high amplitude OT

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Lopez, R. Rebolo; Serra-Ricart, M.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Kuvshinov, D.; Vlasenko, D.; Vladimirov, V.; Popova, E.; Chazov, V.; Israelyan, G.; Lodieu, N.; Budnev, N.; Ivanov, K.

    2016-07-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 20h 48m 06.68s +13d 54m 23.3s on 2016-07-24.16661 UT. The OT unfiltered magnitude is (limit 18.5m).

  13. Exploring the Value of Professional Body Accreditation for Masters Programmes

    ERIC Educational Resources Information Center

    Carrivick, Jonathan L.

    2011-01-01

    Masters programmes face a range of pressures including the drive for increased numbers, for widening participation and for increasingly vocational approaches. Maintaining quality and consistency of knowledge and skill sets between programmes is becoming difficult. This paper critically appraises the value of accreditation of a UK Masters programme…

  14. Trends in Exiting Physics Master's. Focus On

    ERIC Educational Resources Information Center

    Mulvey, Patrick J.; Nicholson, Starr

    2014-01-01

    A physics master's degree provides the recipient with a variety of career options. Some master's recipients will continue their education at the graduate level in physics or another field, where others enter the workforce pursuing a wide range of employment opportunities. This "Focus On" provides an in-depth analysis of physics…

  15. The UK Postgraduate Masters Dissertation: An "Elusive Chameleon"?

    ERIC Educational Resources Information Center

    Pilcher, Nick

    2011-01-01

    Many studies into the process of producing and supervising dissertations exist, yet little research into the "product" of the Masters dissertation, or into how Masters supervision changes over time exist. Drawing on 62 semi-structured interviews with 31 Maths and Computer Science supervisors over a two-year period, this paper explores the Masters…

  16. Master/slave clock arrangement for providing reliable clock signal

    NASA Technical Reports Server (NTRS)

    Abbey, Duane L. (Inventor)

    1977-01-01

    The outputs of two like frequency oscillators are combined to form a single reliable clock signal, with one oscillator functioning as a slave under the control of the other to achieve phase coincidence when the master is operative and in a free-running mode when the master is inoperative so that failure of either oscillator produces no effect on the clock signal.

  17. MASTER: very bright OT in Large Magellanic cloud direction

    NASA Astrophysics Data System (ADS)

    Gorbovskoy, E.; Lipunov, V.; Buckley, D.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Gorbunov, I.; Kuznetsov, A.; Gress, O.; Vladimirov, V.; Popova, E.; Vlasenko, D.; Kuvshinov, D.; Potter, S.

    2016-05-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 05h 10m 32.58s -69d 21m 30.4s on 2016-05-10.72797 UT. The OT unfiltered magnitude is (limit 17.6m).

  18. MASTER-SAAO: bright, >6mag amplitude optical transient

    NASA Astrophysics Data System (ADS)

    Gorbovskoy, E.; Lipunov, V.; Buckley, D.; Potter, S.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Gress, O.; Vladimirov, V.; Gorbunov, I.; Popova, E.; Kuvshinov, D.; Shumkov, V.; Pogrosheva, T.

    2016-05-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 05h 24m 55.76s -28d 30m 05.8s on 2016-05-11.69694 UT. The OT unfiltered magnitude is 15.8 (limit 18.8m).

  19. MASTER: bright PSN in PGC129355 and dwarf novae

    NASA Astrophysics Data System (ADS)

    Gress, O.; Balanutsa, P.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Vladimirov, V.; Shumkov, V.; Potter, S.; Kniazev, A.

    2016-03-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 02h 01m 37.57s -52d 00m 04.9s on 2016-03-03.80209 UT. The OT unfiltered magnitude is (limit 19.3m).

  20. MASTER: possible SN in Sloan galaxy and dwarf novae outbursts

    NASA Astrophysics Data System (ADS)

    Vladimirov, V.; Balanutsa, P.; Lipunov, V.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Vlasenko, D.; Gorbunov, I.; Kuvshinov, D.; Vladimirov, V.; Shumkov, V.; Gress, O.; Budnev, N.; Ivanov, K.; Poleschuk, V.; Tlatov, A.; Senik, V.; Dormidontov, D.

    2016-03-01

    MASTER-Tunka auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 07h 52m 58.03s +04d 39m 36.6s on 2016-03-01.59067 UT. The OT unfiltered magnitude is (limit 18.3m).

  1. MASTER: PSN in PGC032587 and new OTs

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Popova, E.; Lipunov, V.; Lopez, R. Rebolo; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Chazov, V.; Gress, O.; Ivanov, K.; Vladimirov, V.; Vlasenko, D.; Kuvshinov, D.; Serra-Ricart, M.; Israelyan, G.; Potter, S.; Kniazev, A.

    2016-06-01

    MASTER-IAC auto-detection system Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 discovered OT source at (RA, Dec) = 10h 51m 45.85s +55d 23m 12.4s on 2016-05-31.97997 UT. The OT unfiltered magnitude is 18.3 (limit 20.1m).

  2. High amplitude dwarf nova outburst, detected by MASTER

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Gress, O.; Tiurina, N.; Pogrosheva, T.; Lipunov, V.; Buckley, D.; Lopez, R. Rebolo; Gorbovskoy, E.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Gorbunov, I.; Vladimirov, V.; Popova, E.; Kniazev, S. Potter A.; Ricart, M. Serra; Israelian, G.; Budnev, N.; Ivanov, K.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 06h 34m 29.91s -30d 02m 00.2s on 2016-04-21.79961 UT. The OT unfiltered magnitude is 14.9m (limit 18.0m).

  3. MASTER-Net discoveries: PSN, new Blazar and OT

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Balanutsa, P.; Popova, E.; Lipunov, V.; Buckley, D.; Lopez, R. Rebolo; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Vlasenko, D.; Gorbunov, I.; Gress, O.; Vladimirov, V.; Kuvshinov, D.; Ricart, M. Serra; Israelyan, G.; Potter, S.; Kniazev, A.

    2016-03-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 13h 57m 48.95s -27d 26m 23.4s on 2016-03-30.02359 UT. The OT unfiltered magnitude is 17.7m (limit 19.8m).

  4. MASTER-IAC: bright PSN in unknown galaxy

    NASA Astrophysics Data System (ADS)

    Gorbovskoy, E.; Lipunov, V.; Tiurina, N.; Lopez, R. Rebolo; Serra-Ricart, M.; Israelyan, G.; Kornilov, V.; Balanutsa, P.; Kuznetsov, A.; Gorbunov, I.; Vladimirov, V.; Popova, E.; Kuvshinov, D.

    2016-05-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 20h 26m 06.27s -20d 07m 32.6s on 2016-05-16.14495 UT. The OT unfiltered magnitude is 15.7m (limit 18.7m).

  5. Possible Nova in M31 detected by MASTER

    NASA Astrophysics Data System (ADS)

    Popova, E.; Lipunov, V.; Tlatov, A.; Rebolo, R.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Vladimirov, V.; Gorbunov, I.; Ricart, M. Serra; Israelian, G.; Senik, V.; Parkhomenko, D. Dormidontov A.

    2016-04-01

    MASTER-Kislovodsk auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 00h 45m 28.12s +41d 41m 17.6s on 2016-04-10.03461 UT. The OT unfiltered magnitude is 19.0 (the limit is 19.5m).

  6. Master: Psn in 2MASX J05123156-4621194

    NASA Astrophysics Data System (ADS)

    Shurpakov, S.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Gress, O.; Kornilov, V.; Shumkov, V.; Gorbunov, I.; Popova, E.; Vladimirov, V.; Vlasenko, D.; Kuvshinov, D.; Kniazev, S. Potter A.

    2016-04-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 05h 12m 33.07s -46d 21m 22.7s on 2016-04-27.77351 UT. The OT unfiltered magnitude is 18.1m (limit 20.4m).

  7. Enhancing the Academic Experiences of First-Generation Master's Students

    ERIC Educational Resources Information Center

    Portnoi, Laura M.; Kwong, Tiffany M.

    2011-01-01

    Is being "first generation" significant for undergraduates only? The narratives of 25 first-generation master's students in this phenomenological study suggest not. Participants experienced challenges pursuing their master's degrees, yet these were counterbalanced by other factors. The authors identified five areas that educators may address to…

  8. 31. Photocopy of map. Insert from Master Plan Notes Prepared ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    31. Photocopy of map. Insert from Master Plan Notes Prepared by Environmental Planning and Design, Pittsburgh, Pa. Original at Missouri Botanical Garden. 1972 MASTER PLAN 32. 'THE TREE,' SCULPTURE BY ALEXANDER CALDER, 1966 - Missouri Botanical Garden, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

  9. Benefits and Values of the Master Gardener Program.

    ERIC Educational Resources Information Center

    Schrock, Denny S.; Meyer, Mary; Ascher, Peter; Snyder, Mark

    2000-01-01

    Responses from 282 current and former Master Gardeners in Missouri identified the most important benefits they derived from participation: increased knowledge, personal growth, and satisfaction of altruistic values. Social and career-related benefits received the lowest rankings. The most active volunteer Master Gardeners were most likely to…

  10. A Descriptive Profile of the Florida Associate Master Teacher.

    ERIC Educational Resources Information Center

    Lavely, Carolyn; And Others

    A survey was conducted of participants in the 1984/85 Florida Master Teacher Program to determine variables on which award recipients and non-recipients differed, apart from the superior scores obtained on the content area tests and/or the performance evaluation. A descriptive profile of the Associate Master Teacher was developed from the results…

  11. 21 CFR 820.181 - Device master record.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Device master record. 820.181 Section 820.181 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES QUALITY SYSTEM REGULATION Records § 820.181 Device master record. Each manufacturer shall...

  12. 21 CFR 820.181 - Device master record.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Device master record. 820.181 Section 820.181 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES QUALITY SYSTEM REGULATION Records § 820.181 Device master record. Each manufacturer shall...

  13. Masters Level Graduate Student Writing Groups: Exploring Academic Identity

    ERIC Educational Resources Information Center

    Ruggles, Tosha M.

    2012-01-01

    This action research project explores masters level graduate student writing and academic identity during one semester in an interdisciplinary masters program. Informing this study is a two part theoretical framework including the Academic Literacy Model (Lea and Street) and Wenger's concept of identity. The purpose of this exploration was to…

  14. Aspirations for a Master's-Level Teaching Profession in England

    ERIC Educational Resources Information Center

    Thomas, Lorraine

    2016-01-01

    This research investigates aspirations for a master's-level teaching profession in England, providing key stakeholder perceptions in one densely populated region within a multiple case study. Although this intended move to a master's-level profession represented a major shift in teachers' professional development in England, only limited…

  15. Preschool Children Master the Logic of Number Word Meanings

    ERIC Educational Resources Information Center

    Lipton, Jennifer S.; Spelke, Elizabeth S.

    2006-01-01

    Although children take over a year to learn the meanings of the first three number words, they eventually master the logic of counting and the meanings of all the words in their count list. Here, we ask whether children's knowledge applies to number words beyond those they have mastered: Does a child who can only count to 20 infer that number…

  16. Possible Orphan Transient Detection at PGC143111 galaxy by MASTER

    NASA Astrophysics Data System (ADS)

    Popova, E.; Lipunov, V.; Gorbovskoy, E.; Lopez, R. Rebolo; Serra-Ricart, M.; Israelian, G.; Lodieu, N.; Suarez-Andres, L.; Kornilov, V.; Tiurina, N.; Balanutsa, P.; Samus, N.; Gress, O.; Budnev, N.; Ivanov, K.; Buckley, D.; Potter, S.; Knyazev, A.; Kotze, M.; Tlatov, A.; Senik, V.; Dormidontov, D.; Krushinskiy, V.; Sergienko, Yu.; Gabovich, A.; Yurkov, V.

    2015-10-01

    MASTER-IAC auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 00h 00m 08.72s -33d 41m 56.5s on 2015-10-13.98017 UT. The OT unfiltered magnitude is 17.6m (the limit is 19.9m).

  17. 21 CFR 820.181 - Device master record.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Device master record. 820.181 Section 820.181 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES QUALITY SYSTEM REGULATION Records § 820.181 Device master record. Each manufacturer shall...

  18. Mastering Inflectional Suffixes: A Longitudinal Study of Beginning Writers' Spellings

    ERIC Educational Resources Information Center

    Turnbull, Kathryn; Deacon, S. Helene; Bird, Elizabeth Kay-Raining

    2011-01-01

    This study tracked the order in which ten beginning spellers (M age = 5 ; 05; SD = 0.21 years) mastered the correct spellings of common inflectional suffixes in English. Spellings from children's journals from kindergarten and grade 1 were coded. An inflectional suffix was judged to be mastered when children spelled it accurately in 90 percent of…

  19. 21 CFR 820.181 - Device master record.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Device master record. 820.181 Section 820.181 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES QUALITY SYSTEM REGULATION Records § 820.181 Device master record. Each manufacturer shall...

  20. Very Bright OT detected by MASTER-SAAO

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Gorbovskoy, E.; Buckley, D.; Budnev, N.; Tiurina, N.; Balanutsa, P.; Kornilov, V.; Kuznetsov, A.; Shumkov, V.; Gorbunov, I.; Vlasenko, D.; Vladimirov, V.; Popova, E.; Potter, S.; Kotze, M.

    2016-01-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 00h 38m 31.10s -64d 03m 13.7s on 2016-01-26.85306 UT. The OT unfiltered magnitude is 12.7m (limit 18.5m).

  1. 45 CFR 2400.46 - Special consideration: second master's degree.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 4 2014-10-01 2014-10-01 false Special consideration: second master's degree. 2400.46 Section 2400.46 Public Welfare Regulations Relating to Public Welfare (Continued) JAMES MADISON MEMORIAL FELLOWSHIP FOUNDATION FELLOWSHIP PROGRAM REQUIREMENTS Graduate Study § 2400.46 Special consideration: second master's degree. The...

  2. The Master Teacher Concept: Five Perspectives. Report No. 9053.

    ERIC Educational Resources Information Center

    Greene, Maxine; And Others

    This set of papers presents five perspectives on the master teacher concept, each with a different orientation and set of assumptions guiding it: (1) "A Philosophic Look at 'Merit' and 'Mastery' in Teaching" (Maxine Greene); (2) "The School as a Workplace and the Master Teacher Concept" (Gary A. Griffin); (3) "Effective Teaching and the Concept of…

  3. Agonistic Struggle: Master-Slave Dialogues in Humanities Supervision

    ERIC Educational Resources Information Center

    Grant, Barbara M.

    2008-01-01

    Hegel's master and slave is a significant archetype for graduate research supervision. The master-slave relation vividly exemplifies the hierarchical bond that ties supervisor and student together. Such a confronting view of supervision provides a counterbalance to contemporary emphases on equality between supervisor and student. In what follows,…

  4. Developing an Internship Training Program for Master's Level Therapists.

    ERIC Educational Resources Information Center

    Guinee, James P.

    The purpose of this paper is to present a model of a master's level internship training program at a university counseling center and to show how master's level therapists, with adequate supervision and training, have enhanced the performance of a counseling center. The first step was to develop a training manual to serve as a roadmap for staff…

  5. Master-At-Arms: Naval Rate Training Manual.

    ERIC Educational Resources Information Center

    Naval Training Command, Pensacola, FL.

    The manual describes the duties of the Master-at-Arms, a recent addition to the Navy's enlisted rating structure. The new Master-at-Arms must be able to plan, supervise, and perform security duties afloat and ashore. Each chapter focuses on particular responsibilities and procedures: career development, legal procedures, small arms, patrols and…

  6. Pre-Mastering and CD-WO Evaluations

    NASA Technical Reports Server (NTRS)

    Hecox, D.; Hyon, J.; Martin, M.; Marski, K.; Shields, E.; Sorensen, S.; Teramae, S.

    1993-01-01

    This article reviews the features and functionality of five desktop pre-mastering software packages for the PC. Desktop pre-mastering packages are aimed primarily at end-users interested in bringing CD-ROM publishing tasks in-house, rather than traditional CD-ROM developers.

  7. Active particles on curved surfaces

    NASA Astrophysics Data System (ADS)

    Fily, Yaouen; Baskaran, Aparna; Hagan, Michael

    Active systems have proved to be very sensitive to the geometry of their environment. This is often achieved by spending significant time at the boundary, probing its shape by gliding along it. I will discuss coarse graining the microscopic dynamics of self-propelled particles on a general curved surface to predict the way the density profile on the surface depends on its geometry. Beyond confined active particles, this formalism is a natural starting point to study objects that cannot leave the boundary at all, such as cells crawling on a curved substrate, animals running on uneven ground, or active colloids trapped at an interface.

  8. Fitting curves to cyclic data

    USGS Publications Warehouse

    Langbein, W.B.

    1955-01-01

    A common problem in hydrology is to fit a smooth curve to cyclic or periodic data, either to define the most probable values of the data or to test some principle that one wishes to demonstrate.  This study treats of those problems where the length or period of the cycle is know beforehand - as a day, year, or meander length for example.  Curve-fitting can be made by free-hand drawing, and where the data are closely aligned this method offers the simplest and most direct course.  However, there are many problems where the best fit is far from obvious, and analytical methods may be necessary.

  9. NEXT Performance Curve Analysis and Validation

    NASA Technical Reports Server (NTRS)

    Saripalli, Pratik; Cardiff, Eric; Englander, Jacob

    2016-01-01

    Performance curves of the NEXT thruster are highly important in determining the thruster's ability in performing towards mission-specific goals. New performance curves are proposed and examined here. The Evolutionary Mission Trajectory Generator (EMTG) is used to verify variations in mission solutions based on both available thruster curves and the new curves generated. Furthermore, variations in BOL and EOL curves are also examined. Mission design results shown here validate the use of EMTG and the new performance curves.

  10. Development of Unified Lab Test Result Master for Multiple Facilities.

    PubMed

    Kume, Naoto; Suzuki, Kenji; Kobayashi, Shinji; Araki, Kenji; Yoshihara, Hiroyuki

    2015-01-01

    A clinical study requires massive amounts of of lab test data, especially for rare diseases. Before creating a protocol, the hypothesis if the protocol will work with enough amount of patients' dataset has to be proved. However, a single facility, such as a university hospital, often faces a lack of number of patients for specific target diseases. Even if collecting datasets from several facilities, there is no active master table that can merge lab test results between the facility datasets. Therefore, the authors develop a unified lab test result master. Because test master standards such as JLAC10 and LOINC are provided from a viewpoint of academic classification of laboratory medicine, the classification does not fit clinical classification, which doctors understand with a mind-set of establishing a clinical study protocol. The authors establish a method to unify masters using an active lab test result master from two university hospitals. PMID:26262349

  11. The International Reference Preparation of Gramicidin*

    PubMed Central

    Lightbown, J. W.; Bond, Jillian M.; Woodward, Patricia M.

    1967-01-01

    The National Institute for Medical Research, London, was requested by the WHO Expert Committee on Biological Standardization to establish an International Reference Preparation of Gramicidin. This preparation was needed to standardize preparations of gramicidin containing predominantly gramicidin A, B and C, for which purpose the International Reference Preparation of Gramicidin S cannot be used. A batch of 100 g of crystalline gramicidin obtained in 1963 was distributed into ampoules in 55 mg amounts and dried in vacuo; the ampoules were then filled with dried nitrogen and sealed. The proposed international reference preparation was assayed biologically against the Master Standard of Gramicidin of the US Food and Drug Administration in 7 laboratories in 6 countries by turbidimetric methods. Significant curvature of the dose—response lines was found for most assays; no single transformation improved the linearity of assays from all laboratories. Although significant heterogeneity of potencies was obtained in 5 laboratories the mean potency ratios for all laboratories only varied over a range of 5% to 6%. The composition of the material is 7% gramicidin B, 50% gramicidin A and 25% gramicidin C; preparations of gramicidin containing appreciably higher concentrations of gramicidin B can be expected to give invalid assays against the international reference preparation. The material has been established as the International Reference Preparation of Gramicidin with a defined potency of 1000 IU/mg. The International Unit of Gramicidin is defined as the activity of 0.001 mg of the International Reference Preparation of Gramicidin. PMID:5299675

  12. Why Bother about Writing a Masters Dissertation? Assumptions of Faculty and Masters Students in an Iranian Setting

    ERIC Educational Resources Information Center

    Hasrati, Mostafa

    2013-01-01

    This article reports the results of a mixed methodology analysis of the assumptions of academic staff and Masters students in an Iranian university regarding various aspects of the assessment of the Masters degree thesis, including the main objective for writing the thesis, the role of the students, supervisors and advisors in writing the…

  13. Supply Curves of Conserved Energy

    SciTech Connect

    Meier, Alan Kevin

    1982-05-01

    Supply curves of conserved energy provide an accounting framework that expresses the potential for energy conservation. The economic worthiness of a conservation measure is expressed in terms of the cost of conserved energy, and a measure is considered economical when the cost of conserved energy is less than the price of the energy it replaces. A supply curve of conserved energy is independent of energy prices; however, the economical reserves of conserved energy will depend on energy prices. Double-counting of energy savings and error propagation are common problems when estimating conservation potentials, but supply curves minimize these difficulties and make their consequences predictable. The sensitivity of the cost of conserved energy is examined, as are variations in the optimal investment strategy in response to changes in inputs. Guidelines are presented for predicting the consequences of such changes. The conservation supply curve concept can be applied to peak power, water, pollution, and other markets where consumers demand a service rather than a particular good.

  14. Interpolation and Polynomial Curve Fitting

    ERIC Educational Resources Information Center

    Yang, Yajun; Gordon, Sheldon P.

    2014-01-01

    Two points determine a line. Three noncollinear points determine a quadratic function. Four points that do not lie on a lower-degree polynomial curve determine a cubic function. In general, n + 1 points uniquely determine a polynomial of degree n, presuming that they do not fall onto a polynomial of lower degree. The process of finding such a…

  15. Geomorphological origin of recession curves

    NASA Astrophysics Data System (ADS)

    Biswal, Basudev; Marani, Marco

    2010-12-01

    We identify a previously undetected link between the river network morphology and key recession curves properties through a conceptual-physical model of the drainage process of the riparian unconfined aquifer. We show that the power-law exponent, α, of -dQ/dt vs. Q curves is related to the power-law exponent of N(l) vs. G(l) curves (which we show to be connected to Hack's law), where l is the downstream distance from the channel heads, N(l) is the number of channel reaches exactly located at a distance l from their channel head, and G(l) is the total length of the network located at a distance greater or equal to l from channel heads. Using Digital Terrain Models and daily discharge observations from 67 US basins we find that geomorphologic α estimates match well the values obtained from recession curves analyses. Finally, we argue that the link between recession flows and network morphology points to an important role of low-flow discharges in shaping the channel network.

  16. CURVES, VERTICES, KNOTS AND SUCH.

    ERIC Educational Resources Information Center

    FOLEY, JACK L.

    THIS BOOKLET, ONE OF A SERIES, HAS BEEN DEVELOPED FOR THE PROJECT, A PROGRAM FOR MATHEMATICALLY UNDERDEVELOPED PUPILS. A PROJECT TEAM, INCLUDING INSERVICE TEACHERS, IS BEING USED TO WRITE AND DEVELOP THE MATERIALS FOR THIS PROGRAM. THE MATERIALS DEVELOPED IN THIS BOOKLET INCLUDE SUCH CONCEPTS AS (1) SIMPLE CLOSED CURVES, (2) NETWORKS, (3) MAP…

  17. Data catalog series for space science and applications flight missions. Volume 6: Master index volume

    NASA Technical Reports Server (NTRS)

    Horowitz, Richard; Ross, Patricia A.; King, Joseph H.

    1989-01-01

    The main purpose of the data catalog series is to provide descriptive references to data generated by space science flight missions. The data sets described include all of the actual holdings of the Space Science Data Center (NSSDC), all data sets for which direct contact information is available, and some data collections held and serviced by foreign investigators, NASA, and other U.S. government agencies. This volume contains the Master Index. The following spacecraft are included: Mariner, Pioneer, Pioneer Venus, Venera, Viking, Voyager, and Helios. Separate indexes to the planetary and interplanetary missions are also provided.

  18. Reach for Reference. Four Recent Reference Books

    ERIC Educational Resources Information Center

    Safford, Barbara Ripp

    2004-01-01

    This article provides descriptions of four new science and technology encyclopedias that are appropriate for inclusion in upper elementary and/or middle school reference collections. "The Macmillan Encyclopedia of Weather" (Stern, Macmillan Reference/Gale), a one-volume encyclopedia for upper elementary and middle level students, is a…

  19. Comparison of Two Algebraic Methods for Curve/curve Intersection

    NASA Technical Reports Server (NTRS)

    Demontaudouin, Y.; Tiller, W.

    1985-01-01

    Most geometric modeling systems use either polynomial or rational functions to represent geometry. In such systems most computational problems can be formulated as systems of polynomials in one or more variables. Classical elimination theory can be used to solve such systems. Here Cayley's method of elimination is summarized and it is shown how it can best be used to solve the curve/curve intersection problem. Cayley's method was found to be a more straightforward approach. Furthermore, it is computationally simpler, since the elements of the Cayley matrix are one variable instead of two variable polynomials. Researchers implemented and tested both methods and found Cayley's to be more efficient. Six pairs of curves, representing mixtures of lines, circles, and cubic arcs were used. Several examples had multiple intersection points. For all six cases Cayley's required less CPU time than the other method. The average time ratio of method 1 to method 2 was 3.13:1, the least difference was 2.33:1, and the most dramatic was 6.25:1. Both of the above methods can be extended to solve the surface/surface intersection problem.

  20. Fundamentals of Reference

    ERIC Educational Resources Information Center

    Mulac, Carolyn M.

    2012-01-01

    The all-in-one "Reference reference" you've been waiting for, this invaluable book offers a concise introduction to reference sources and services for a variety of readers, from library staff members who are asked to work in the reference department to managers and others who wish to familiarize themselves with this important area of…

  1. Live, Digital Reference.

    ERIC Educational Resources Information Center

    Kenney, Brian

    2002-01-01

    Discusses digital reference services, also known as virtual reference, chat reference, or online reference, based on a round table discussion at the 2002 American Library Association annual conference in Atlanta. Topics include numbers and marketing; sustainability; competition and models; evaluation methods; outsourcing; staffing and training;…

  2. Statistical Reference Datasets

    National Institute of Standards and Technology Data Gateway

    Statistical Reference Datasets (Web, free access)   The Statistical Reference Datasets is also supported by the Standard Reference Data Program. The purpose of this project is to improve the accuracy of statistical software by providing reference datasets with certified computational results that enable the objective evaluation of statistical software.

  3. Synchronization Analysis of Master-Slave Probabilistic Boolean Networks.

    PubMed

    Lu, Jianquan; Zhong, Jie; Li, Lulu; Ho, Daniel W C; Cao, Jinde

    2015-01-01

    In this paper, we analyze the synchronization problem of master-slave probabilistic Boolean networks (PBNs). The master Boolean network (BN) is a deterministic BN, while the slave BN is determined by a series of possible logical functions with certain probability at each discrete time point. In this paper, we firstly define the synchronization of master-slave PBNs with probability one, and then we investigate synchronization with probability one. By resorting to new approach called semi-tensor product (STP), the master-slave PBNs are expressed in equivalent algebraic forms. Based on the algebraic form, some necessary and sufficient criteria are derived to guarantee synchronization with probability one. Further, we study the synchronization of master-slave PBNs in probability. Synchronization in probability implies that for any initial states, the master BN can be synchronized by the slave BN with certain probability, while synchronization with probability one implies that master BN can be synchronized by the slave BN with probability one. Based on the equivalent algebraic form, some efficient conditions are derived to guarantee synchronization in probability. Finally, several numerical examples are presented to show the effectiveness of the main results. PMID:26315380

  4. Alignment of master and sample in comparative digital holography

    NASA Astrophysics Data System (ADS)

    Schwab, Xavier; Meister, Eugen; Pedrini, Giancarlo; Osten, Wolfgang

    2006-08-01

    A comparative digital holography system suitable for shape and deformation comparisons between master and sample objects with rough surfaces is described. The innovative aspect of comparative digital holography is the illumination of the sample by the conjugated wavefront of the master, as a type of coherent mask, using a liquid crystal display (LCD). The resulting interferogram indicates directly the shape or the deformation differences between the master and sample. As it is not necessary that both objects to be compared are located at the same place for this technique, remote shape or deformation comparison between a master and a sample is possible. A current research topic is the precise alignment of the sample and the reconstructed master wavefront so that the resulting phase map only contains information of the differences in shape or deformation. The reconstructed master wavefront can be adjusted digitally to correctly illuminate the sample object, by introducing an artificial phase-shift. This phase-shift is induced by the LCD, and offers also the possibility of calibrating precisely the set-up. The value for the phase-shift is obtained by a comparison of the resulting interferogram with a database containing fringes from simulations of misalignments between master and sample objects. Using the iterative algorithm described here, the correction of the sample position can be controlled by an automatic adaptation of the coherent mask.

  5. Middle Atmosphere Sounder and Thermal Emission Radiometer - Master

    NASA Astrophysics Data System (ADS)

    Mlynczak, M. G.; Scott, D. K.; Esplin, R. W.; Bailey, S. M.; Randall, C. E.

    2014-12-01

    The Middle Atmosphere Sounder and Thermal Emission Radiometer (MASTER) instrument is an advanced infrared limb-scanning instrument designed to measure the thermal structure, chemical composition, and energy balance from the stratosphere to the lower thermosphere. MASTER builds on NASA's long and successful heritage of infrared limb scanners including the LIMS, HIRDLS, and SABER instruments. MASTER has exceptional radiometric sensitivity with a more efficient, compact, and lightweight design. An updated focal plane enables critical new science in the areas of the carbon budget closure, geomagnetically-driven ozone destruction, and auroral energy deposition, while virtually eliminating out of band contributions via dual filtering. MASTER will continue the SABER-TIMED and EOS-Aura records of temperature, lower stratospheric water vapor, ozone, methane, and thermospheric cooling by nitric oxide and carbon dioxide. MASTER's size and mass are specifically designed to allow flexibility in the choice of small satellite buses and low cost launch vehicles. The expanded focal plane enables a choice of channels applicable to science objectives in NASA's Earth Science and Heliophysics enterprises. Due to the long and successful heritage the MASTER instrument is at an exceptionally high technology readiness level. No new technologies are required to build the MASTER flight instrument.

  6. Synchronization Analysis of Master-Slave Probabilistic Boolean Networks

    NASA Astrophysics Data System (ADS)

    Lu, Jianquan; Zhong, Jie; Li, Lulu; Ho, Daniel W. C.; Cao, Jinde

    2015-08-01

    In this paper, we analyze the synchronization problem of master-slave probabilistic Boolean networks (PBNs). The master Boolean network (BN) is a deterministic BN, while the slave BN is determined by a series of possible logical functions with certain probability at each discrete time point. In this paper, we firstly define the synchronization of master-slave PBNs with probability one, and then we investigate synchronization with probability one. By resorting to new approach called semi-tensor product (STP), the master-slave PBNs are expressed in equivalent algebraic forms. Based on the algebraic form, some necessary and sufficient criteria are derived to guarantee synchronization with probability one. Further, we study the synchronization of master-slave PBNs in probability. Synchronization in probability implies that for any initial states, the master BN can be synchronized by the slave BN with certain probability, while synchronization with probability one implies that master BN can be synchronized by the slave BN with probability one. Based on the equivalent algebraic form, some efficient conditions are derived to guarantee synchronization in probability. Finally, several numerical examples are presented to show the effectiveness of the main results.

  7. Color silver halide hologram production and mastering

    NASA Astrophysics Data System (ADS)

    Bjelkhagen, Hans I.; Huang, Qiang

    1997-04-01

    Color reflection holograms recorded with the Denisyuk geometry have been demonstrated by the recently formed HOLOS Corporation in New Hampshire. The Slavich red-green-blue (RGB) sensitized ultra-high resolution silver halide emulsion was used for the hologram recording. The employed laser wavelengths were 647 nm, 532 nm, and 476 nm, generated by an argon ion, a frequency doubled Nd:YAG, and a krypton ion laser, respectively. A beam combination mechanism with dichroic filters enabled a simultaneous RGB exposure, which made the color balance and overall exposure energy easy to control as well as simplifying the recording procedure. HOLOS has been producing limited edition color holograms in various sizes from 4' X 5' to 12' X 16'. A 30 foot long optical table and high power lasers will enable HOLOS to record color holograms up to the size of one meter square in the near future. Various approaches have been investigated in generating color hologram masters which have sufficiently high diffraction efficiency to contact copy the color images onto photopolymer materials. A specially designed test object including the 1931 CIE chromaticity diagram, a rainbow ribbon cable, pure yellow dots, and a cloisonne elephant was used for color recording experiments. In addition, the Macbeth Color Checker chart was used. Both colorimetric evaluation and scattering noise measurements were performed using the PR-650 Photo Research SpectraScan SpectraCalorimeter.

  8. Master Regulators in Plant Glucose Signaling Networks

    PubMed Central

    Sheen, Jen

    2014-01-01

    The daily life of photosynthetic plants revolves around sugar production, transport, storage and utilization, and the complex sugar metabolic and signaling networks integrate internal regulators and environmental cues to govern and sustain plant growth and survival. Although diverse sugar signals have emerged as pivotal regulators from embryogenesis to senescence, glucose is the most ancient and conserved regulatory signal that controls gene and protein expression, cell-cycle progression, central and secondary metabolism, as well as growth and developmental programs. Glucose signals are perceived and transduced by two principal mechanisms: direct sensing through glucose sensors and indirect sensing via a variety of energy and metabolite sensors. This review focuses on the comparative and functional analyses of three glucose-modulated master regulators in Arabidopsis thaliana, the hexokinase1 (HXK1) glucose sensor, the energy sensor kinases KIN10/KIN11 inactivated by glucose, and the glucose-activated target of rapamycin (TOR) kinase. These regulators are evolutionarily conserved, but have evolved universal and unique regulatory wiring and functions in plants and animals. They form protein complexes with multiple partners as regulators or effectors to serve distinct functions in different subcellular locales and organs, and play integrative and complementary roles from cellular signaling and metabolism to development in the plant glucose signaling networks. PMID:25530701

  9. Preliminary Master Logic Diagram for ITER operation

    SciTech Connect

    Cadwallader, L.C.; Taylor, N.P.; Poucet, A.E.

    1998-04-01

    This paper describes the work performed to develop a Master Logic Diagram (MLD) for the operations phase of the International Thermonuclear Experimental Reactor (ITER). The MLD is a probabilistic risk assessment tool used to identify the broad set of potential initiating events that could lead to an offsite radioactive or toxic chemical release from the facility under study. The MLD described here is complementary to the failure modes and effects analyses (FMEAs) that have been performed for ITER`s major plant systems in the engineering evaluation of the facility design. While the FMEAs are a bottom-up or component level approach, the MLD is a top-down or facility level approach to identifying the broad spectrum of potential events. Strengths of the MLD are that it analyzes the entire plant, depicts completeness in the accident initiator process, provides an independent method for identification, and can also identify potential system interactions. MLDs have been used successfully as a hazard analysis tool. This paper describes the process used for the ITER MLD to treat the variety of radiological and toxicological source terms present in the ITER design. One subtree of the nineteen page MLD is shown to illustrate the levels of the diagram.

  10. The Master Enabler: In Orbit Servicing

    NASA Technical Reports Server (NTRS)

    Reed, Benjamin B.; Kienlen, Michael; Naasz, Bo; Roberts, Brian; Deweese, Keith; Cassidy, Justin

    2015-01-01

    Some of the most noteworthy missions in space exploration have occurred in the last two decades and owe their success to on-orbit servicing. The tremendously successful Hubble Space Telescope repair and upgrade missions, as well as the completed assembly of the International Space Station (ISS) and its full utilization, lead us to the next chapter and set of challenges. These include fully exploiting the many space systems already launched, assembling large structures in situ thereby enabling new scientific discoveries, and providing systems that reliably and cost-effectively support the next steps in space exploration. In-orbit servicing is a tool--a tool that can serve as the master enabler to create space architectures that would otherwise be unattainable. This paper will survey how NASA's satellite-servicing technology development efforts are being applied to the planning and execution of two such ambitious missions, specifically asteroid capture and the in-space assembly of a very large life-finding telescope.

  11. In-Orbit Servicing: The Master Enabler

    NASA Technical Reports Server (NTRS)

    Reed, Benjamin B.; Kienlen, Michael; Naasz, Bo; Roberts, Brian; Deweese, Keith

    2015-01-01

    Some of the most noteworthy missions in space exploration have occurred in the last two decades and owe their success to on-orbit servicing. The tremendously successful Hubble Space Telescope repair and upgrade missions, as well as the completed assembly of the International Space Station (ISS) and its full utilization, lead us to the next chapter and set of challenges. These include fully exploiting the many space systems already launched, assembling large structures in situ thereby enabling new scientific discoveries, and providing systems that reliably and cost-effectively support the next steps in space exploration. In-orbit servicing is a tool--a tool that can serve as the master enabler to create space architectures that would otherwise be unattainable. This paper will survey how NASA's satellite-servicing technology development efforts are being applied to the planning and execution of two such ambitious missions, specifically asteroid capture and the in-space assembly of a very large life-finding telescope.

  12. The "Master Enabler" - In-Orbit Servicing

    NASA Technical Reports Server (NTRS)

    Reed, Benjamin; Kienlen, Michael; Naasz, Bo; Roberts, Brian; Deweese, Keith; Cassidy, Justin

    2015-01-01

    Some of the most noteworthy missions in space exploration have occurred in the last two decades and owe their success to on-orbit servicing. The tremendously successful Hubble Space Telescope repair and upgrade missions, as well as the completed assembly of the International Space Station (ISS) and its full utilization, lead us to the next chapter and set of challenges. These include fully exploiting the many space systems already launched, assembling large structures in situ thereby enabling new scientific discoveries, and providing systems that reliably and cost-effectively support the next steps in space exploration. In-orbit servicing is a tool-a tool that can serve as the master enabler to create space architectures that would otherwise be unattainable. This paper will survey how NASA's satellite-servicing technology development efforts are being applied to the planning and execution of two such ambitious missions, specifically asteroid capture and the in-space assembly of a very large life-finding telescope.

  13. Coho Salmon Master Plan, Clearwater River Basin.

    SciTech Connect

    Nez Perce Tribe; FishPro

    2004-10-01

    The Nez Perce Tribe has a desire and a goal to reintroduce and restore coho salmon to the Clearwater River Subbasin at levels of abundance and productivity sufficient to support sustainable runs and annual harvest. Consistent with the Clearwater Subbasin Plan (EcoVista 2003), the Nez Perce Tribe envisions developing an annual escapement of 14,000 coho salmon to the Clearwater River Subbasin. In 1994, the Nez Perce Tribe began coho reintroduction by securing eggs through U.S. v. Oregon; by 1998 this agreement provided an annual transfer of 550,000 coho salmon smolts from lower Columbia River hatchery facilities for release in the Clearwater River Subbasin. In 1998, the Northwest Power and Conservation Council authorized the Bonneville Power Administration to fund the development of a Master Plan to guide this reintroduction effort. This Master Plan describes the results of experimental releases of coho salmon in the Clearwater River Subbasin, which have been ongoing since 1995. These data are combined with results of recent coho reintroduction efforts by the Yakama Nation, general coho life history information, and historical information regarding the distribution and life history of Snake River coho salmon. This information is used to assess a number of alternative strategies aimed at restoring coho salmon to historical habitats in the Clearwater River subbasin. These data suggest that there is a high probability that coho salmon can be restored to the Clearwater River subbasin. In addition, the data also suggest that the re-establishment of coho salmon could be substantially aided by: (1) the construction of low-tech acclimation facilities; (2) the establishment of a 'localized' stock of coho salmon; and (3) the construction of hatchery facilities to provide a source of juvenile coho salmon for future supplementation activities. The Nez Perce Tribe recognizes that there are factors which may limit the success of coho reintroduction. As a result of these

  14. NASA directives: Master list and index

    NASA Technical Reports Server (NTRS)

    1994-01-01

    This Handbook sets forth in two parts the following information for the guidance of users of the NASA Management Directives System. Chapter 1 contains introductory information material on how to use this Handbook. Chapter 2 is a complete master list of Agency-wide management directives, describing each directive by type, number, effective date, expiration date, title, and organization code of the office responsible for the directive. Chapter 3 includes a consolidated numerical list of all delegations of authority and a breakdown of such delegation by the office of Installation to which special authority is assigned. Chapter 4 sets forth a consolidated list of all NASA Handbooks (NHB's) and important footnotes covering the control and ordering of such documents. Chapter 5 is a consolidated list of NASA management directives applicable to the Jet Propulsion Laboratory. Chapter 6 is a consolidated list of NASA management directives published in the code of Federal Regulations. Complementary manuals to the NASA Management Directives System are described in Chapter 7. Part B contains an in-depth alphabetical index to all NASA management directives other than Handbooks.

  15. MASTER: optical V404 Cyg microquasar wake up

    NASA Astrophysics Data System (ADS)

    Lipunov, V.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Vlasenko, D.; Gorbunov, I.; Vladimirov, V.; Yurkov, V.; Sergienko, Yu.; Gabovich, A.; Budnev, N.; Gress, O.; Ivanov, K.

    2015-12-01

    MASTER-Amur ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) starts observations of current V404 activity (Swift trigger 668097, S.D.Barthelmy et al. GCN #18716) at 2015-12-23 09:14:02 UT (V.Yurkov et al., GCN #18717 ) just after the sunset . MASTER-Tunka starts alert observations of V404 at 2015-12-23 10:16:20 UT (just after the sunset, 17447 sec after notice time and 17787 sec after trigger time).

  16. Bilateral Control Using Master/Slave Simulator for Haptic Communication

    NASA Astrophysics Data System (ADS)

    Yokokura, Yuki; Katsura, Seiichiro; Ohishi, Kiyoshi

    A bilateral controller is used to transmit and share haptic information between a master system and a slave system. In a transmission system, the bilateral controller encounters problems in the event of data packet loss and/or disconnections. In this study, a master/slave simulator and environmental data memory are used to solve the problems. In the case of normal operation, the environmental data memory stores force data in a remote side. The control system is operated by the environmental data memory and master/slave simulator when the communication lines are disconnected.

  17. Master's Degree in sustainable development in Switzerland, the first master course comprising three faculties.

    PubMed

    Burkhardt-Holm, Patricia; Chebbi, Camelia

    2008-03-01

    Sustainable development has become a key aspect in society, economics and environment. Therefore, experts dealing with questions relating to people, the environment and its resources are more and more requested. This paper presents the concept and first experiences of a specialised Master's Degree in Sustainable Development (MSD). This is a pioneer course as it is equally anchored in three faculties (Human science, Natural science, Business and Economy) at the University of Basel, Switzerland. It aims to transmit knowledge, teach methodology and enable practical work experience in the field of sustainable development. This interdisciplinary master's degree is composed of several modules. At first, the attendance of modules providing a basic understanding in the disciplines not yet covered by the former Bachelor degree, is mandatory. In optional modules, the acquired knowledge of the compulsory modules is further enhanced, focussing on four different topics and are titled as: Agglomeration and Ecosystems; Conservation and Utilisation of Natural Resources; Environment, Values, Societal Transformation and Health; and Environmental Problems in a Globalised World. In another optional module, students may complete an internship in which they can apply theoretical and thematic knowledge. To work independently on a problem in the context of, interdisciplinary projects are a central request in the MSD. Finally, the master thesis has to be planned and realized by a plying the scientific methods and skills acquired in the previous modules. Since the beginning of the programme in the winter of 2005/2006, 45 students have enrolled. They received degrees at 25 different universities, 13 of which are from abroad. Some already have several years of working experience, while others have only just completed their Bachelor's degrees. A analysis has shown that the graduates will have excellent chances in the employment market, since they are well qualified to take over sought

  18. Optical conductivity of curved graphene.

    PubMed

    Chaves, A J; Frederico, T; Oliveira, O; de Paula, W; Santos, M C

    2014-05-01

    We compute the optical conductivity for an out-of-plane deformation in graphene using an approach based on solutions of the Dirac equation in curved space. Different examples of periodic deformations along one direction translates into an enhancement of the optical conductivity peaks in the region of the far- and mid-infrared frequencies for periodicities ∼100 nm. The width and position of the peaks can be changed by dialling the parameters of the deformation profiles. The enhancement of the optical conductivity is due to intraband transitions and the translational invariance breaking in the geometrically deformed background. Furthermore, we derive an analytical solution of the Dirac equation in a curved space for a general deformation along one spatial direction. For this class of geometries, it is shown that curvature induces an extra phase in the electron wave function, which can also be explored to produce interference devices of the Aharonov-Bohm type. PMID:24759188

  19. Flow Through Randomly Curved Manifolds

    PubMed Central

    Mendoza, M.; Succi, S.; Herrmann, H. J.

    2013-01-01

    We present a computational study of the transport properties of campylotic (intrinsically curved) media. It is found that the relation between the flow through a campylotic media, consisting of randomly located curvature perturbations, and the average Ricci scalar of the system, exhibits two distinct functional expressions, depending on whether the typical spatial extent of the curvature perturbation lies above or below the critical value maximizing the overall scalar of curvature. Furthermore, the flow through such systems as a function of the number of curvature perturbations is found to present a sublinear behavior for large concentrations, due to the interference between curvature perturbations leading to an overall less curved space. We have also characterized the flux through such media as a function of the local Reynolds number and the scale of interaction between impurities. For the purpose of this study, we have also developed and validated a new lattice Boltzmann model. PMID:24173367

  20. Analysis of Exoplanet Light Curves

    NASA Astrophysics Data System (ADS)

    Erdem, A.; Budding, E.; Rhodes, M. D.; Püsküllü, Ç.; Soydugan, F.; Soydugan, E.; Tüysüz, M.; Demircan, O.

    2015-07-01

    We have applied the close binary system analysis package WINFITTER to a variety of exoplanet transiting light curves taken both from the NASA Exoplanet Archive and our own ground-based observations. WINFitter has parameter options for a realistic physical model, including gravity brightening and structural parameters derived from Kopal's applications of the relevant Radau equation, and it includes appropriate tests for determinacy and adequacy of its best fitting parameter sets. We discuss a number of issues related to empirical checking of models for stellar limb darkening, surface maculation, Doppler beaming, microvariability, and transit time variation (TTV) effects. The Radau coefficients used in the light curve modeling, in principle, allow structural models of the component stars to be tested.

  1. Quantum walking in curved spacetime

    NASA Astrophysics Data System (ADS)

    Arrighi, Pablo; Facchini, Stefano; Forets, Marcelo

    2016-08-01

    A discrete-time quantum walk (QW) is essentially a unitary operator driving the evolution of a single particle on the lattice. Some QWs admit a continuum limit, leading to familiar PDEs (e.g., the Dirac equation). In this paper, we study the continuum limit of a wide class of QWs and show that it leads to an entire class of PDEs, encompassing the Hamiltonian form of the massive Dirac equation in (1+1) curved spacetime. Therefore, a certain QW, which we make explicit, provides us with a unitary discrete toy model of a test particle in curved spacetime, in spite of the fixed background lattice. Mathematically, we have introduced two novel ingredients for taking the continuum limit of a QW, but which apply to any quantum cellular automata: encoding and grouping.

  2. Gravitational-wave sensitivity curves

    NASA Astrophysics Data System (ADS)

    Moore, C. J.; Cole, R. H.; Berry, C. P. L.

    2015-01-01

    There are several common conventions in use by the gravitational-wave community to describe the amplitude of sources and the sensitivity of detectors. These are frequently confused. We outline the merits of and differences between the various quantities used for parameterizing noise curves and characterizing gravitational-wave amplitudes. We conclude by producing plots that consistently compare different detectors. Similar figures can be generated on-line for general use at http://rhcole.com/apps/GWplotter.

  3. Phase Curves of Eccentric Exoplanets

    NASA Astrophysics Data System (ADS)

    Lewis, Nikole K.; de Wit, Julien; Laughlin, Gregory P.; Knutson, Heather

    2016-01-01

    Nearly 15% of the known exoplanet population have significantly eccentric orbits (e > 0.25). Systems with planets on highly eccentric orbits provide natural laboratories to test theories of orbital evolution, tidal forcing, and atmospheric response. The two best studied eccentric exoplanets are HAT-P-2b (e~0.5) and HD 80606 b (e~0.9). Both of these eccentric planets have full or partial orbit phase curve observations taken with the 3.6, 4.5, and 8.0 micron channels of the Spitzer IRAC instrument. These phase-curve observations of HAT-P-2b and HD 80606 b have given us important insights into atmospheric radiative timescales, planetary rotation rates and orbital evolution, and planet-star tidal interactions. Here I will overview the key results from the Spitzer observational campaigns for HAT-P-2b and HD 80606 b and look toward the future of phase curve observations of eccentric exoplanets in the era of JWST.

  4. Growth curves for Laron syndrome.

    PubMed Central

    Laron, Z; Lilos, P; Klinger, B

    1993-01-01

    Growth curves for children with Laron syndrome were constructed on the basis of repeated measurements made throughout infancy, childhood, and puberty in 24 (10 boys, 14 girls) of the 41 patients with this syndrome investigated in our clinic. Growth retardation was already noted at birth, the birth length ranging from 42 to 46 cm in the 12/20 available measurements. The postnatal growth curves deviated sharply from the normal from infancy on. Both sexes showed no clear pubertal spurt. Girls completed their growth between the age of 16-19 years to a final mean (SD) height of 119 (8.5) cm whereas the boys continued growing beyond the age of 20 years, achieving a final height of 124 (8.5) cm. At all ages the upper to lower body segment ratio was more than 2 SD above the normal mean. These growth curves constitute a model not only for primary, hereditary insulin-like growth factor-I (IGF-I) deficiency (Laron syndrome) but also for untreated secondary IGF-I deficiencies such as growth hormone gene deletion and idiopathic congenital isolated growth hormone deficiency. They should also be useful in the follow up of children with Laron syndrome treated with biosynthetic recombinant IGF-I. PMID:8333769

  5. TWRS Privatization Phase 1 Master Site Plan

    SciTech Connect

    PARAZIN, R.J.

    1999-08-16

    This document provides a reference for the development of the Tank Waste Remediation System (TWRS) Privatization Phase I site (former Grout Disposal Compound) and the upgrades and extension to the site of the 200 East Area inter- and intra-area roads and various utilities.

  6. 24. Detail, typical interior door, from living room to master ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. Detail, typical interior door, from living room to master bedroom; view to south; 135mm lens with electronic flash illumination. - Warner Hutton House, 13495 Sousa Lane, Saratoga, Santa Clara County, CA

  7. FACILITY 89. INTERIOR OF MASTER BEDROOM, AS SEEN FROM DOORWAY. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    FACILITY 89. INTERIOR OF MASTER BEDROOM, AS SEEN FROM DOORWAY. VIEW FACING NORTHEAST. - U.S. Naval Base, Pearl Harbor, Naval Housing Area Makalapa, Junior Officers' Quarters Type K, Makin Place, & Halawa, Makalapa, & Midway Drives, Pearl City, Honolulu County, HI

  8. FACILITY 89. INTERIOR OF MASTER BATHROOM. VIEW FACING SOUTHWEST. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    FACILITY 89. INTERIOR OF MASTER BATHROOM. VIEW FACING SOUTHWEST. - U.S. Naval Base, Pearl Harbor, Naval Housing Area Makalapa, Junior Officers' Quarters Type K, Makin Place, & Halawa, Makalapa, & Midway Drives, Pearl City, Honolulu County, HI

  9. The Future of the Campus: Architecture and Master Planning Trends

    ERIC Educational Resources Information Center

    Coulson, Jonathan; Roberts, Paul; Taylor, Isabelle

    2015-01-01

    The article discusses current and likely future trends within the architecture and master planning of university campuses. It argues that higher education administrators must maximise the value of the campus to create physical environments that enhance the student experience.

  10. Site Plan: Master Plan, Fort Custer, Michigan, Reservation Boundary and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Site Plan: Master Plan, Fort Custer, Michigan, Reservation Boundary and Land Use Map. USACOE, 31 December 1954 - Fort Custer Military Reservation, Bounded by Territorial, Dickman, & Longman Roads & Route 94 Business, Battle Creek, Calhoun County, MI

  11. 5. DETAIL VIEW OF OLD, PUNCHTYPE MASTER FIRE ALARM SYSTEM, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. DETAIL VIEW OF OLD, PUNCH-TYPE MASTER FIRE ALARM SYSTEM, LOCATED ON S WALL OF ENGINE STORAGE ROOM; LOOKING S. (Ceronie and Ryan) - Watervliet Arsenal, Building No. 22, Westervelt Avenue & Buffington Street, Watervliet, Albany County, NY

  12. 17. SOUTHEAST CORNER OF BUILDING 8990 (MASTER SURVEILLANCE AND CONTROL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. SOUTHEAST CORNER OF BUILDING 8990 (MASTER SURVEILLANCE AND CONTROL TOWER). - Loring Air Force Base, Alert Area, Southeastern portion of base, east of southern end of runway, Limestone, Aroostook County, ME

  13. 18. NORTHEAST CORNER OF BUILDING 8990 (MASTER SURVEILLANCE ADN CONTROL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. NORTHEAST CORNER OF BUILDING 8990 (MASTER SURVEILLANCE ADN CONTROL TOWER). - Loring Air Force Base, Alert Area, Southeastern portion of base, east of southern end of runway, Limestone, Aroostook County, ME

  14. 93. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    93. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 92, February 9, 1907) CAISSON No. 3 JUST BEFORE LAUNCHING - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  15. 96. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    96. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 161, March 2, 1908) DERRICK AT PIER 2 - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  16. 90. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    90. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 26, August 24, 1906) INTERIOR OF ENGINE ROOM, PRESSURE BARGE - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  17. 95. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    95. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 150, January 18, 1908) SPANS 4 AND 5 - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  18. 94. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    94. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 106, May 13, 1907) CAISSON No. 3 - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  19. 89. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    89. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 6, not dated) DRAW SPAN - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  20. 98. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    98. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 181, May 5, 1908) STEEL ERECTION AT DRAW SPAN - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  1. 91. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    91. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 44, October 13, 1906) SANDBAGGING PIER No. 4 - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  2. 99. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    99. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection, No. 183, May 6, 1908) SETTING CENTER CASTING - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  3. 92. Reproduction from glass plate negative (Modjeski and Masters office, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    92. Reproduction from glass plate negative (Modjeski and Masters office, Modjeski Collection No. 70, December 24, 1906) CAISSON No. 2 - Burlington Northern Railroad Bridge, Spanning Willamette River at River Mile 6.9, Portland, Multnomah County, OR

  4. Degree Options and Requirements in Master's Degree Programs.

    ERIC Educational Resources Information Center

    Sumner, David E.

    1998-01-01

    Presents results of a survey of 158 master's degree programs in mass communication disciplines regarding: thesis, project, and coursework-only options; course requirements; and core courses most frequently required. Compares these findings with those from earlier studies. (SR)

  5. Design of haptic master featuring small-sized MR brakes

    NASA Astrophysics Data System (ADS)

    Gang, Han Gyeol; Choi, Seung-Bok; Sohn, Jung Woo

    2016-04-01

    In this work, a new type of haptic master featuring small-sized MR brake is proposed and its performances are evaluated. The proposed haptic master consists of base frame, stick grip and small-sized four MR brakes for 3-DOF rotational motion and 1-DOF gripper motion. To obtain large braking torque under limited small size of MR brake, dual tapered shape inner magnetic core is proposed and its performance is evaluated via both numerical estimation and experimental test. After design and implementation of control algorithm, it has been demonstrated through experiment that the proposed actuator has good performances on tracking control of desired torques. Then, a new haptic master device is designed and constructed by adopting the proposed MR brakes and light weight frame structures. It is verified that the proposed haptic master device is effective for the real application in the field.

  6. Interior view of northeast unit master bedroom, looking into sleeping ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Interior view of northeast unit master bedroom, looking into sleeping porch, facing northeast - MacDill Air Force Base, Double Non-Commissioned Officers' Quarters, 7418 Hanger Loop Drive, Tampa, Hillsborough County, FL

  7. Interior view, detail view in master bedroom looking northwest to ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Interior view, detail view in master bedroom looking northwest to show board & batten door opened to reveal original planks, with scale; note; nursery beyond door to west - Fort Hill, Clemson University Campus, Clemson, Pickens County, SC

  8. Staying positive: going beyond Lindblad with perturbative master equations

    NASA Astrophysics Data System (ADS)

    Whitney, Robert S.

    2008-05-01

    The perturbative master equation (Bloch-Redfield) is used extensively to study dissipative quantum mechanics—particularly for qubits—despite the 25-year-old criticism that it violates positivity (generating negative probabilities). We take an arbitrary system coupled to an environment containing many degrees-of-freedom and cast its perturbative master equation (derived from a perturbative treatment of Nakajima-Zwanzig or Schoeller-Schön equations) in the form of a Lindblad master equation. We find that the equation's parameters are time dependent. This time dependence is rarely accounted for and invalidates Lindblad's dynamical semigroup analysis. We analyse one such Bloch-Redfield master equation (for a two-level system coupled to an environment with a short but non-vanishing memory time), which apparently violates positivity. We analytically show that, once the time dependence of the parameters is accounted for, positivity is preserved.

  9. Bedroom Furniture Details Master Bedroom Vanity, First Bedroom Desk, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Bedroom Furniture Details - Master Bedroom Vanity, First Bedroom Desk, Dresser, and Twin Bead Headboard, and Second Bedroom Dresser and Desk - Warren Segraves Residence, 217 Oklahoma Way, Fayetteville, Washington County, AR

  10. Thermal 2-loop master spectral function at finite momentum

    NASA Astrophysics Data System (ADS)

    Laine, M.

    2013-05-01

    When considering NLO corrections to thermal particle production in the "relativistic" regime, in which the invariant mass squared of the produced particle is {{{K}}^2} ( πT)2, then the production rate can be expressed as a sum of a few universal "master" spectral functions. Taking the most complicated 2-loop master as an example, a general strategy for obtaining a convergent 2-dimensional integral representation is suggested. The analysis applies both to bosonic and fermionic statistics, and shows that for this master the non-relativistic approximation is only accurate for {{{K}}^2} (8 πT)2, whereas the zero-momentum approximation works surprisingly well. Once the simpler masters have been similarly resolved, NLO results for quantities such as the right-handed neutrino production rate from a Standard Model plasma or the dilepton production rate from a QCD plasma can be assembled for {{{K}}^2} ( πT)2.

  11. 21 CFR 820.181 - Device master record.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... DEVICES QUALITY SYSTEM REGULATION Records § 820.181 Device master record. Each manufacturer shall maintain..., component specifications, and software specifications; (b) Production process specifications including the... specifications; (c) Quality assurance procedures and specifications including acceptance criteria and the...

  12. The Buckling of Curved Tension-field Girders

    NASA Technical Reports Server (NTRS)

    Limpert, G

    1938-01-01

    The present paper reports on experiments made to determine the buckling load under shear of circular curved tension-field webs. The buckling load of the webs may be expressed with reference to the buckling load of the stiffeners. It is found that within the explored range the buckling load is approximately twice as great as that of the identically stiffened flat wall of equal web depth.

  13. Blue MASTER OT J020844.29+481923.0 Detection

    NASA Astrophysics Data System (ADS)

    Vladimirov, V.; Zubareva, A.; Lipunov, V.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Pruzhinskaya, M.; Denisenko, D.; Rufanov, V.; Ivanov, K.; Yazev, S.; Budnev, N.; Gress, O.; Poleshchuk, V.; Parkhomenko, E. Konstantinov A.; Tlatov, A.; Dormidontov, D.; Yurkov, V. Senik V.; Sergienko, Y.; Varda, D.; Sinyakov, E.; Gabovich, V.; Krushinsky, V.; Zalozhnih, I.; Popov, A.; Bourdanov, A.; Buckley, D.; Potter, S.; Kniazev, A.; Kotze, M.; Shumkov, V.; Shurpakov, S.

    2015-01-01

    MASTER OT J020844.29+481923.0 - CV? MASTER-Tunka auto-detection system (Lipunov et al., 2010, Advances in Astronomy, vol. 2010, pp. 1, http://adsabs.harvard.edu/abs/2010AdAst2010E..30L) discovered OT source at (RA, Dec) = 02h 08m 44.29s +48d 19m 23.0s on 2015-01-08.52068 UT.

  14. Oil and gas field code master list, 1993

    SciTech Connect

    Not Available

    1993-12-16

    This document contains data collected through October 1993 and provides standardized field name spellings and codes for all identified oil and/or gas fields in the United States. Other Federal and State government agencies, as well as industry, use the EIA Oil and Gas Field Code Master List as the standard for field identification. A machine-readable version of the Oil and Gas Field Code Master List is available from the National Technical Information Service.

  15. MASTER: OT discovered during inspection of HESE 58537957 trigger

    NASA Astrophysics Data System (ADS)

    Tyurina, N.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Vlasenko, D.; Gress, O.; Ivanov, K.; Shumkov, V.; Potter, S.

    2016-08-01

    MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 13h 08m 45.02s -32d 32m 54.9s on 2016-08-24.73811 UT during inspection of HESE alert ( 58537957 trigger number ) http://gcn.gsfc.nasa.gov/notices_amon/58537957_128340.amon . The OT unfiltered magnitude is 19.6m (limit 20.5m).

  16. MASTER: very bright high amplitude(>7.2m) OT

    NASA Astrophysics Data System (ADS)

    Balanutsa, V.; Balanutsa, P.; Lipunov, V.; Lopez, R. Rebolo; Serra-Ricart, M.; Gorbovskoy, E.; Tiurina, N.; Kornilov, V.; Kuznetsov, A.; Kuvshinov, D.; Vlasenko, D.; Vladiirov, V.; Popova, E.; Chazov, V.; Israelyan, G.; Lodieu, N.; Budnev, N.; Gress, O.; Ivanov, K.

    2016-07-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 20h 53m 16.61s -10d 56m 33.1s on 2016-07-24.10765 UT. The OT unfiltered (W=0.2B+0.8R, calibrated by USNO-B1) magnitude is 14.8 (limit 18.7m).

  17. MASTER discoveries: dwarf novae, PSN, OT in Andromeda direction

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Gress, O.; Balanutsa, P.; Lipunov, V.; Rebolo Lopez, R.; Serra Ricart, M.; Gorbovskoy, E.; Tiurina, N.; Kuznetsov, A.; Kornilov, V.; Ivanov, K.

    2016-09-01

    MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 00h 41m 26.22s +41d 43m 50.0s on 2016-09-02.12339 UT. The OT unfiltered magnitude is 19.7m, mlim=20.0 The OT is seen in 14 images.

  18. MASTER-SAAO and MATER-Net OTs detection

    NASA Astrophysics Data System (ADS)

    Balanutsa, P.; Shumkov, V.; Lipunov, V. M.; Buckley, D. A. H.; Gorbovskoy, E.; Tiurina, N.; Shurpakov, S.; Gress, O.; Kuznetsov, A.; Vladimirov, V.; Kornilov, V.; Vlasenko, D.; Gorbunov, I.; Kniazev, A.; Potter, S. B.; Kotze, M.; Tlatov, A.; Senik, V.; Dormidontov, D.

    2016-03-01

    MASTER-SAAO auto-detection system (Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 07h 28m 58.62s -65d 21m 31.9s on 2016-02-28.87676 UT with unfiltered m_OT=19.0m (the limit is 20.3m).

  19. [The title of master in the history of health care].

    PubMed

    Piasek, G; Piasek, M

    1999-09-01

    The review examples of usage of the Latin term magister (master) in various common titles throughout the past, particularly in Croatia. As early as the Roman Empire and until the Middle Ages, the title magister designated various functions and duties, generally denoting authority, higher rank, or a responsible position. The review highlights certain historical events and persons related to the usage of the title magister. Ever since the Middle Ages, the title has specifically denoted various health care professions. The term was used in Latin, as it was the official language in Croatia at the time, for example, m. chirurgiae (master of surgery), m. obstetritiae (master of obstetrics), m. artis occularis (master of the eye-related skills), m. hospitalis (master of the hospice), m. sanitatis (health care master). As an example, the review shows the difference between the titles doctor medicinae and m. obstetritiae according to John the Baptist Lalangue (1743-1799), the official physician of the Varazdin county in the Hapsburg Empire and one of the most prominent figures in the history of health care in Croatia. Lalangue was the author of the first professional medical book in the Croatian language published in 1776 and of several other books in Croatian. The books were meant to teach medical professionals and ordinary people how to improve their health. Beside the title of medical doctor, Lalangue held the title of m. obstetritiae which he earned through additional education. He thought it was essential for a complete health provider to be trained both in general practice and in obstetrics which, at the time, included infant care. Nowadays in Croatia, only persons who are graduate pharmacists use magister pharmaciae as a professional title. The title is otherwise strictly reserved to denote an academic degree between the bachelor's and the doctoral in a particular field. The title magister scientiarum (Master of Science) is achieved upon completion of a postgraduate

  20. Control of 4-DOF MR haptic master for medical application

    NASA Astrophysics Data System (ADS)

    Oh, Jong-Seok; Choi, Seung-Hyun; Choi, Seung-Bok

    2014-03-01

    In this work, magnetorheological (MR) based haptic master for robot-assisted minimally invasive surgery (RMIS) is proposed and analyzed. Using a controllable MR fluid, the masters can generate a reflection force with the 4-DOF motion. The proposed master consists of two actuators: MR clutch featuring gimbal mechanism for 2-DOF rotational motion (X and Y axes) and MR clutch attached at gripper of gimbal structures for 1-DOF rotational motion (Z axis) and 1-DOF translational motion. After analyzing the dynamic motion by integrating mechanical and physical properties of the actuators, torque model of the proposed haptic master is derived. For realization of master-slave system, an encoder which can measure position information is integrated with the MR haptic master. In the RMIS system, the measured position is converted as a command signal and sent to the slave robot. In this work, slave and organ of patient are modeled in virtual space. In order to embody a human organ into virtual space, a volumetric deformable object is mathematically formulated by a shape retaining chain linked (S-chain) model. Accordingly, the haptic architecture is established by incorporating the virtual slave with the master device in which the reflection force and desired position originated from the object of the virtual slave and operator of the master, respectively, are transferred to each other. In order to achieve the desired force trajectories, a proportional-integral-derivative (PID) controller is designed and implemented. It has been demonstrated that the effective tracking control performance for the desired motion of reflection force is well presented in time domain.

  1. The pentabox Master Integrals with the Simplified Differential Equations approach

    NASA Astrophysics Data System (ADS)

    Papadopoulos, Costas G.; Tommasini, Damiano; Wever, Christopher

    2016-04-01

    We present the calculation of massless two-loop Master Integrals relevant to five-point amplitudes with one off-shell external leg and derive the complete set of planar Master Integrals with five on-mass-shell legs, that contribute to many 2 → 3 amplitudes of interest at the LHC, as for instance three jet production, γ , V, H + 2 jets etc., based on the Simplified Differential Equations approach.

  2. MASTER-Kislovodsk: bright OT with 7mag amplitude

    NASA Astrophysics Data System (ADS)

    Gress, O.; Lipunov, V.; Gorbovskoy, E.; Samus, N.; Tiurina, N.; Balanutsa, P.; Vladimirov, V.; Kuznetsov, A.; Kornilov, V.; Shumkov, V.; Gorbunov, I.; Vlasenko, D.; Kuvshinov, D.; Tlatov, A.; Senik, V.; Dormidontov, D.; Parkhomenko, A.

    2016-02-01

    MASTER-Kislovodsk auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010 )discovered OT source at (RA, Dec) = 07h 33m 25.52s +37d 37m 44.9s on 2016-02-24.90468 UT. The OT unfiltered magnitude is 15.1m (limit 18.0m).The OT is seen in 3 images.

  3. Closed description of arbitrariness in resolving quantum master equation

    NASA Astrophysics Data System (ADS)

    Batalin, Igor A.; Lavrov, Peter M.

    2016-07-01

    In the most general case of the Delta exact operator valued generators constructed of an arbitrary Fermion operator, we present a closed solution for the transformed master action in terms of the original master action in the closed form of the corresponding path integral. We show in detail how that path integral reduces to the known result in the case of being the Delta exact generators constructed of an arbitrary Fermion function.

  4. Master Clock and Time-Signal-Distribution System

    NASA Technical Reports Server (NTRS)

    Tjoelker, Robert; Calhoun, Malcolm; Kuhnle, Paul; Sydnor, Richard; Lauf, John

    2007-01-01

    A timing system comprising an electronic master clock and a subsystem for distributing time signals from the master clock to end users is undergoing development to satisfy anticipated timing requirements of NASA s Deep Space Network (DSN) for the next 20 to 30 years. This system has a modular, flexible, expandable architecture that is easier to operate and maintain than the present frequency and timing subsystem (FTS).

  5. Revisiting the Master-Signifier, or, Mandela and Repression.

    PubMed

    Hook, Derek; Vanheule, Stijn

    2015-01-01

    The concept of the master-signifier has been subject to a variety of applications in Lacanian forms of political discourse theory and ideology critique. While there is much to be commended in literature of this sort, it often neglects salient issues pertaining to the role of master signifiers in the clinical domain of (individual) psychical economy. The popularity of the concept of the master (or "empty") signifier in political discourse analysis has thus proved a double-edged sword. On the one hand it demonstrates how crucial psychical processes are performed via the operations of the signifier, extending thus the Lacanian thesis that identification is the outcome of linguistic and symbolic as opposed to merely psychological processes. On the other, the use of the master signifier concept within the political realm to track discursive formations tends to distance the term from the dynamics of the unconscious and operation of repression. Accordingly, this paper revisits the master signifier concept, and does so within the socio-political domain, yet while paying particular attention to the functioning of unconscious processes of fantasy and repression. More specifically, it investigates how Nelson Mandela operates as a master signifier in contemporary South Africa, as a vital means of knitting together diverse elements of post-apartheid society, enabling the fantasy of the post-apartheid nation, and holding at bay a whole series of repressed and negated undercurrents. PMID:26834664

  6. Revisiting the Master-Signifier, or, Mandela and Repression

    PubMed Central

    Hook, Derek; Vanheule, Stijn

    2016-01-01

    The concept of the master-signifier has been subject to a variety of applications in Lacanian forms of political discourse theory and ideology critique. While there is much to be commended in literature of this sort, it often neglects salient issues pertaining to the role of master signifiers in the clinical domain of (individual) psychical economy. The popularity of the concept of the master (or “empty”) signifier in political discourse analysis has thus proved a double-edged sword. On the one hand it demonstrates how crucial psychical processes are performed via the operations of the signifier, extending thus the Lacanian thesis that identification is the outcome of linguistic and symbolic as opposed to merely psychological processes. On the other, the use of the master signifier concept within the political realm to track discursive formations tends to distance the term from the dynamics of the unconscious and operation of repression. Accordingly, this paper revisits the master signifier concept, and does so within the socio-political domain, yet while paying particular attention to the functioning of unconscious processes of fantasy and repression. More specifically, it investigates how Nelson Mandela operates as a master signifier in contemporary South Africa, as a vital means of knitting together diverse elements of post-apartheid society, enabling the fantasy of the post-apartheid nation, and holding at bay a whole series of repressed and negated undercurrents. PMID:26834664

  7. Past, present, and future trends of master's education in nursing.

    PubMed

    Gerard, Sally O; Kazer, Meredith W; Babington, Lynn; Quell, Theresa T

    2014-01-01

    Nurses interested in pursuing careers in advanced practice are now being educated at the doctoral level through new doctorate of nursing practice degree programs. In light of this shift, master's programs for advanced practice nurses are in a tenuous position, and it is questionable whether the remaining master's level educational programs are meeting the needs of consumers, health care institutions, and students. Given the great need for clinical leadership in health care, it is essential to reexamine master's nursing education to ensure that educational institutions are meeting the needs of graduate nursing students, consumers, and health care systems. Research supports that the master's-prepared nurse of the future must be proficient in the development and management of accountable care systems using state-of-the-art technology. In addition, interprofessional models show improvement in health care delivery and health outcomes. The current demands in health care that impact nursing education will be discussed, including the movement toward interprofessional education and the broadened expertise, required of master's-prepared nurses working in an era of health care reform. While academic medical centers are actively advancing toward an interprofessional model, the majority of nurses in this country are educated in private and community settings. This article will examine the move toward interprofessional education at a private university, utilizing clinical partnerships to revise the master's program. The goal of this revision is to empower students with the expertise required in today's health care environment to improve the delivery of care. PMID:25150418

  8. Genetics Home Reference

    MedlinePlus

    Skip Navigation Bar Home Current Issue Past Issues Genetics Home Reference Past Issues / Spring 2007 Table of ... of this page please turn Javascript on. The Genetics Home Reference (GHR) Web site — ghr.nlm.nih. ...

  9. The Test of Reference.

    ERIC Educational Resources Information Center

    Childers, Thomas

    1980-01-01

    Reports the results of an unobtrusive study, from a user's viewpoint, of reference services available in the Suffolk Cooperative Library System. The study raises questions of policy centering around user expectations of library reference services. (RAA)

  10. Best Reference Sources 2001.

    ERIC Educational Resources Information Center

    Coutts, Brian; McConnell, Tamara

    2002-01-01

    Presents an annotated list of the best reference materials published in 2001. Discusses activity in the reference publishing industry; costs; and lists print materials, Web sites, databases, and CD-ROMs. (LRW)

  11. Compression of contour data through exploiting curve-to-curve dependence

    NASA Technical Reports Server (NTRS)

    Yalabik, N.; Cooper, D. B.

    1975-01-01

    An approach to exploiting curve-to-curve dependencies in order to achieve high data compression is presented. One of the approaches to date of along curve compression through use of cubic spline approximation is taken and extended by investigating the additional compressibility achievable through curve-to-curve structure exploitation. One of the models under investigation is reported on.

  12. A comparative analysis of the accuracy of implant master casts fabricated from two different transfer impression techniques

    PubMed Central

    Patil, Rupali; Kadam, Pankaj; Oswal, Chetan; Patil, Seema; Jajoo, Shweta; Gachake, Arati

    2016-01-01

    Aim: This study evaluated and compared two impression techniques in terms of their dimensional accuracies to reproduce implant positions on working casts. Materials and Methods: A master model was designed to simulate a clinical situation. Impressions were made using four techniques: (1) Stock open tray (SOT) technique; (2) stock closed tray (SCT) technique; (3) custom open tray (COT) technique; and (3) custom closed tray (CCT) technique. Reference points on the hexagonal silhouette of the implant on master model and onto the analogs of the obtained master casts were compared after using the four impression techniques. Measurements were made using an optical microscope, capable of recording under 50x magnifications. The means and standard deviations of all the groups and subgroups were calculated and statically analyzed using analysis of variance (ANOVA) and Tukey's test. Results: The open tray impressions showed significantly less variation from the master model and all the techniques studied were comparable. Conclusion: All the techniques studied shown some distortion. COT showed the most accurate results of all the techniques. PMID:27114954

  13. A low-cost, Nist-traceable, high performance dielectric resonator Master Oscillator

    SciTech Connect

    L.R. Doolittle; C. Hovater; L. Merminga; J. Musson; W. Wiseman

    1999-05-01

    The current CEBAF Master Oscillator (MO) uses a quartz-based 10 MHz reference to synthesize 70 MHz and 499 MHz, which are then distributed to each of the klystron galleries on site. Due to the specialized nature of CEBAF's MO requirements, it has been determined that an in-house design and fabrication would provide a cost-effective alternative to purchasing or modifying vendor equipment. A Global Positioning System (GPS) disciplined, Direct Digital Synthesis (DDS) based MO is proposed which incorporates low-cost consumer RF components, designed for cellular communications. A 499 MHz Dielectric Resonant Oscillator (DRO) Voltage Controlled Oscillator (VCO) is phase-locked to a GPS-disciplined 10 MHz reference, and micro-tuned via a DDS, in an effort to achieve the lowest phase noise possible.

  14. Carbon Management Response curves: estimates of temporal soil carbon dynamics.

    PubMed

    West, Tristram O; Marland, Gregg; King, Anthony W; Post, Wilfred M; Jain, Atul K; Andrasko, Kenneth

    2004-04-01

    Measurement of the change in soil carbon that accompanies a change in land use (e.g., forest to agriculture) or management (e.g., conventional tillage to no-till) can be complex and expensive, may require reference plots, and is subject to the variability of statistical sampling and short-term variability in weather. In this paper, we develop Carbon Management Response (CMR) curves that could be used as an alternative to in situ measurements. The CMR curves developed here are based on quantitative reviews of existing global analyses and field observations of changes in soil carbon. The curves show mean annual rates of soil carbon change, estimated time to maximum rates of change, and estimated time to a new soil carbon steady state following the initial change in management. We illustrate how CMR curves could be used in a carbon accounting framework while effectively addressing a number of potential policy issues commonly associated with carbon accounting. We find that CMR curves provide a transparent means to account for changes in soil carbon accumulation and loss rates over time, and also provide empirical relationships that might be used in the development or validation of ecological or Earth systems models. PMID:15453404

  15. NLINEAR - NONLINEAR CURVE FITTING PROGRAM

    NASA Technical Reports Server (NTRS)

    Everhart, J. L.

    1994-01-01

    A common method for fitting data is a least-squares fit. In the least-squares method, a user-specified fitting function is utilized in such a way as to minimize the sum of the squares of distances between the data points and the fitting curve. The Nonlinear Curve Fitting Program, NLINEAR, is an interactive curve fitting routine based on a description of the quadratic expansion of the chi-squared statistic. NLINEAR utilizes a nonlinear optimization algorithm that calculates the best statistically weighted values of the parameters of the fitting function and the chi-square that is to be minimized. The inputs to the program are the mathematical form of the fitting function and the initial values of the parameters to be estimated. This approach provides the user with statistical information such as goodness of fit and estimated values of parameters that produce the highest degree of correlation between the experimental data and the mathematical model. In the mathematical formulation of the algorithm, the Taylor expansion of chi-square is first introduced, and justification for retaining only the first term are presented. From the expansion, a set of n simultaneous linear equations are derived, which are solved by matrix algebra. To achieve convergence, the algorithm requires meaningful initial estimates for the parameters of the fitting function. NLINEAR is written in Fortran 77 for execution on a CDC Cyber 750 under NOS 2.3. It has a central memory requirement of 5K 60 bit words. Optionally, graphical output of the fitting function can be plotted. Tektronix PLOT-10 routines are required for graphics. NLINEAR was developed in 1987.

  16. Dirac's aether in curved spacetime.

    PubMed

    Oliveira; Teixeira

    2000-06-01

    Proca's equations for two types of fields in a Dirac's aether with electric conductivity sigma are solved exactly. The Proca electromagnetic fields are assumed with cylindrical symmetry. The background is a static, curved spacetime whose spatial section is homogeneous and has the topology of either the three-sphere S 3 or the projective three-space P 3. Simple relations between the range of Proca field lambda, the Universe radius R, the limit of photon rest mass mgamma and the conductivity sigma are written down. PMID:10932114

  17. Seeing effects on occultation curves.

    NASA Technical Reports Server (NTRS)

    Young, A. T.

    1971-01-01

    Evaluation of seeing effects on the light curve of a stellar occultation by the moon. Some theoretical studies of Fried (1966) and Hulett (1967) on the linear size of the downward-looking seeing disk are cited, showing that the seeing blur amounts to a few centimeters for a star in the zenith and that the linear blur must grow approximately as (sec z) to the 3/2 power. For most observations the seeing blur will not exceed 8 to 10 cm. The limitation on angular resolution imposed by this seeing effect is calculated.

  18. Assessment of Reference Services.

    ERIC Educational Resources Information Center

    Von Seggern, Marilyn

    1987-01-01

    This annotated bibliography of materials dealing with the evaluation of library reference services is arranged by category including literature success, quality, and accuracy of answers; cost and task analysis; interviews and communication; classification of reference questions; reference collections; staff availability; use and nonuse of…

  19. Academic Library Reference Services.

    ERIC Educational Resources Information Center

    Batt, Fred

    This examination of the philosophy and objectives of academic library reference services provides an overview of the major reference approaches to fulfilling the following primary objectives of reference services: (1) providing accurate answers to patrons' questions and/or helping patrons find sources to pursue their research needs; (2) building…

  20. Mastering Interproximal Stripping: With Innovations in Slenderization

    PubMed Central

    Shrivastav, Sunita S; Hazarey, Pushpa V

    2012-01-01

    of crowding, some can be approached with expansion after thorough diagnosis and treatment planning. Most of these cases will require extraction of permanent teeth to preserve facial esthetics and the integrity of the supporting soft tissue. Sequential proximal stripping is routinely carried out to avoid extraction in borderline cases where space discrepancy is less and reserved for treatment of mild tooth-size/arch-size discrepancies. How to cite this article: Sharma NS, Shrivastav SS, Hazarey PV. Mastering Interproximal Stripping: With Innovations in Slenderization. Int J Clin Pediatr Dent 2012;5(2):163-166. PMID:25206161

  1. Dismantling a Master Narrative: Using Culturally Responsive Pedagogy to Teach the History of Art Education

    ERIC Educational Resources Information Center

    Acuff, Joni Boyd; Hirak, Brent; Nangah, Mary

    2012-01-01

    The consequence of narratives becoming stagnant or controlled is that they become a Master Narrative. The Master Narrative is an "ideological script that is being imposed by the people in authority on everybody else: The Master Fiction... history" (Moyers, 1990, para. 4). Master Narratives use myths and ideologies to sustain a sanitized version of…

  2. 46 CFR 11.459 - Service requirements for master or mate of rivers.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Service requirements for master or mate of rivers. 11... requirements for master or mate of rivers. (a) An applicant for an endorsement as master of river steam or... motor vessels of any gross tons. (b) An applicant for an endorsement as master or mate of river steam...

  3. 46 CFR 11.459 - Service requirements for master or mate of rivers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Service requirements for master or mate of rivers. 11... requirements for master or mate of rivers. (a) An applicant for an endorsement as master of river steam or... motor vessels of any gross tons. (b) An applicant for an endorsement as master or mate of river steam...

  4. 46 CFR 11.459 - Service requirements for master or mate of rivers.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Service requirements for master or mate of rivers. 11... requirements for master or mate of rivers. (a) An applicant for an endorsement as master of river steam or... motor vessels of any gross tons. (b) An applicant for an endorsement as master or mate of river steam...

  5. Miniature curved artificial compound eyes

    PubMed Central

    Floreano, Dario; Pericet-Camara, Ramon; Viollet, Stéphane; Ruffier, Franck; Brückner, Andreas; Leitel, Robert; Buss, Wolfgang; Menouni, Mohsine; Expert, Fabien; Juston, Raphaël; Dobrzynski, Michal Karol; L’Eplattenier, Geraud; Recktenwald, Fabian; Mallot, Hanspeter A.; Franceschini, Nicolas

    2013-01-01

    In most animal species, vision is mediated by compound eyes, which offer lower resolution than vertebrate single-lens eyes, but significantly larger fields of view with negligible distortion and spherical aberration, as well as high temporal resolution in a tiny package. Compound eyes are ideally suited for fast panoramic motion perception. Engineering a miniature artificial compound eye is challenging because it requires accurate alignment of photoreceptive and optical components on a curved surface. Here, we describe a unique design method for biomimetic compound eyes featuring a panoramic, undistorted field of view in a very thin package. The design consists of three planar layers of separately produced arrays, namely, a microlens array, a neuromorphic photodetector array, and a flexible printed circuit board that are stacked, cut, and curved to produce a mechanically flexible imager. Following this method, we have prototyped and characterized an artificial compound eye bearing a hemispherical field of view with embedded and programmable low-power signal processing, high temporal resolution, and local adaptation to illumination. The prototyped artificial compound eye possesses several characteristics similar to the eye of the fruit fly Drosophila and other arthropod species. This design method opens up additional vistas for a broad range of applications in which wide field motion detection is at a premium, such as collision-free navigation of terrestrial and aerospace vehicles, and for the experimental testing of insect vision theories. PMID:23690574

  6. Miniature curved artificial compound eyes.

    PubMed

    Floreano, Dario; Pericet-Camara, Ramon; Viollet, Stéphane; Ruffier, Franck; Brückner, Andreas; Leitel, Robert; Buss, Wolfgang; Menouni, Mohsine; Expert, Fabien; Juston, Raphaël; Dobrzynski, Michal Karol; L'Eplattenier, Geraud; Recktenwald, Fabian; Mallot, Hanspeter A; Franceschini, Nicolas

    2013-06-01

    In most animal species, vision is mediated by compound eyes, which offer lower resolution than vertebrate single-lens eyes, but significantly larger fields of view with negligible distortion and spherical aberration, as well as high temporal resolution in a tiny package. Compound eyes are ideally suited for fast panoramic motion perception. Engineering a miniature artificial compound eye is challenging because it requires accurate alignment of photoreceptive and optical components on a curved surface. Here, we describe a unique design method for biomimetic compound eyes featuring a panoramic, undistorted field of view in a very thin package. The design consists of three planar layers of separately produced arrays, namely, a microlens array, a neuromorphic photodetector array, and a flexible printed circuit board that are stacked, cut, and curved to produce a mechanically flexible imager. Following this method, we have prototyped and characterized an artificial compound eye bearing a hemispherical field of view with embedded and programmable low-power signal processing, high temporal resolution, and local adaptation to illumination. The prototyped artificial compound eye possesses several characteristics similar to the eye of the fruit fly Drosophila and other arthropod species. This design method opens up additional vistas for a broad range of applications in which wide field motion detection is at a premium, such as collision-free navigation of terrestrial and aerospace vehicles, and for the experimental testing of insect vision theories. PMID:23690574

  7. Implicit dose-response curves.

    PubMed

    Pérez Millán, Mercedes; Dickenstein, Alicia

    2015-06-01

    We develop tools from computational algebraic geometry for the study of steady state features of autonomous polynomial dynamical systems via elimination of variables. In particular, we obtain nontrivial bounds for the steady state concentration of a given species in biochemical reaction networks with mass-action kinetics. This species is understood as the output of the network and we thus bound the maximal response of the system. The improved bounds give smaller starting boxes to launch numerical methods. We apply our results to the sequential enzymatic network studied in Markevich et al. (J Cell Biol 164(3):353-359, 2004) to find nontrivial upper bounds for the different substrate concentrations at steady state. Our approach does not require any simulation, analytical expression to describe the output in terms of the input, or the absence of multistationarity. Instead, we show how to extract information from effectively computable implicit dose-response curves, with the use of resultants and discriminants. We moreover illustrate in the application to an enzymatic network, the relation between the exact implicit dose-response curve we obtain symbolically and the standard hysteresis diagram provided by a numerical ode solver. The setting and tools we propose could yield many other results adapted to any autonomous polynomial dynamical system, beyond those where it is possible to get explicit expressions. PMID:25008963

  8. Learning Curve: Adapting Library Workspaces

    ERIC Educational Resources Information Center

    Haug, James C.

    2008-01-01

    One of the hubs of campus life at Longwood University--located in the small central Virginia town of Farmville--is the Janet D. Greenwood Library. In fall 2004, reference materials were relocated to free up space, and 15 computer workstations, which had been lined up against a wall, were replaced with 48 new PCs. In 2005, library staff began…

  9. Galois Representations Connected with Hyperbolic Curves

    NASA Astrophysics Data System (ADS)

    Voevodskiĭ, V. A.

    1992-06-01

    The author considers Galois group actions on the fundamental groups of curves of hyperbolic type, and proves certain cases of Grothendieck's conjecture about the possibility of recovering a curve from its Galois representation.

  10. Fabrication of hemispherical nano structure on a curved Al surface using low-temperature and high-voltage anodizing method.

    PubMed

    Shin, H G; Park, Y M; Kim, B H; Seo, Y H

    2011-01-01

    A simple method of fabricating hemispherical nanostructures on a curved aluminum rod surface was presented. In conventional methods of fabricating nanopatterns on a curved aluminum surface, mechanical or chemical processes have been widely used for the lens technologies. Such processes are not only expensive with long processing times, however, but they also involve local fabrication and are limited in the dimension size. In this paper, a method of fabricating hemispherical nanostructures on a curved aluminum surface is suggested for a functional three-dimensional (3D) master using a low-temperature and high-voltage (LTHV) anodizing method. By reducing the aluminum reaction rate under a low-temperature environment, the reaction current density can be remarkably reduced even though a high voltage was induced. Using the LTHV anodizing method, the hemispherical pattern size can be easily controlled with respect to voltage variations. The sizes of the hemispherical nanopatterns were about 150-300 nm. Using the LTHV anodizing process, hemispherical nanostructures can be obtained on a curved aluminum surface with controllable pattern sizes of 150-300 nm without defects such as burring from Joule's heat, micro-scratches, and cracks. A curved 3D hemispherical nanostructure may be used as a master in the roll-to-roll process. PMID:21446469

  11. The general efficiency curve for air propellers

    NASA Technical Reports Server (NTRS)

    Diehl, Walter S

    1924-01-01

    This report presents a formula which may be used to obtain a "general efficiency curve" in addition to the well-known maximum efficiency curve. These two curves, when modified somewhat by experimental data, enable performance calculations to be made without detailed knowledge of the propeller. The curves may also be used to estimate the improvement in efficiency due to reduction gearing, or to judge the performance of a new propeller design.

  12. Home Insulating and Home Births: Do Patrons' Sex-typed Questions Influence Judgments about the Competence of Reference Librarians?

    ERIC Educational Resources Information Center

    Harris, Roma M.; Michell, Gillian

    1988-01-01

    Master's students in library science and students in a library technician program were asked to read scripts of reference interviews in which the amount of bibliographic instruction and the "maleness" or "femaleness" of questions were varied. They were then asked to make a judgment about the competence of the reference librarian in the script. (10…

  13. The New Eclipsing CV MASTER OTJ192328.22+612413.5—A Possible SW Sextantis Star

    NASA Astrophysics Data System (ADS)

    Kennedy, M. R.; Callanan, P.; Garnavich, P. M.; Szkody, P.; Bouanane, S.; Rose, B. M.; Bendjoya, P.; Abe, L.; Rivet, J. P.; Suarez, O.

    2016-07-01

    We present optical photometry and spectroscopy of the new eclipsing cataclysmic variable MASTER OTJ192328.22+612413.5, discovered by the MASTER team. We find the orbital period to be P = 0.16764612(5) day/4.023507(1) hr. The depth of the eclipse (2.9 ± 0.1 mag) suggests that the system is nearly edge on, and modeling of the system confirms the inclination to be between 81.°3 and 83.°6. The brightness outside the eclipse varies between observations, with a change of 1.6 ± 0.1 mag. Spectroscopy reveals double-peaked Balmer emission lines. By using spectral features matching a late M-type companion, we bound the distance to be 750 ± 250 pc, depending on the companion’s spectral type. The source displays 2 mag brightness changes on timescales of days. The amplitude of these changes, along with the spectrum at the faint state, suggest that the system is possibly a dwarf nova. The lack of any high-excitation He ii lines suggests that this system is not magnetically dominated. The light curve in both quiescence and outburst resembles that of Lanning 386, implying MASTER OTJ192328.22+612413.5 is a possible cross between a dwarf nova and a SW Sextantis star.

  14. Bacterial streamers in curved microchannels

    NASA Astrophysics Data System (ADS)

    Rusconi, Roberto; Lecuyer, Sigolene; Guglielmini, Laura; Stone, Howard

    2009-11-01

    Biofilms, generally identified as microbial communities embedded in a self-produced matrix of extracellular polymeric substances, are involved in a wide variety of health-related problems ranging from implant-associated infections to disease transmissions and dental plaque. The usual picture of these bacterial films is that they grow and develop on surfaces. However, suspended biofilm structures, or streamers, have been found in natural environments (e.g., rivers, acid mines, hydrothermal hot springs) and are always suggested to stem from a turbulent flow. We report the formation of bacterial streamers in curved microfluidic channels. By using confocal laser microscopy we are able to directly image and characterize the spatial and temporal evolution of these filamentous structures. Such streamers, which always connect the inner corners of opposite sides of the channel, are always located in the middle plane. Numerical simulations of the flow provide evidences for an underlying hydrodynamic mechanism behind the formation of the streamers.

  15. Euler characteristics and elliptic curves.

    PubMed

    Coates, J; Howson, S

    1997-10-14

    Let E be a modular elliptic curve over [symbol, see text], without complex multiplication; let p be a prime number where E has good ordinary reduction; and let Finfinity be the field obtained by adjoining [symbol, see text] to all p-power division points on E. Write Ginfinity for the Galois group of Finfinity over [symbol, see text]. Assume that the complex L-series of E over [symbol, see text] does not vanish at s = 1. If p >/= 5, we make a precise conjecture about the value of the Ginfinity-Euler characteristic of the Selmer group of E over Finfinity. If one makes a standard conjecture about the behavior of this Selmer group as a module over the Iwasawa algebra, we are able to prove our conjecture. The crucial local calculations in the proof depend on recent joint work of the first author with R. Greenberg. PMID:11607752

  16. Spinning bodies in curved spacetime

    NASA Astrophysics Data System (ADS)

    d'Ambrosi, G.; Satish Kumar, S.; van de Vis, J.; van Holten, J. W.

    2016-02-01

    We study the motion of neutral and charged spinning bodies in curved spacetime in the test-particle limit. We construct equations of motion using a closed covariant Poisson-Dirac bracket formulation that allows for different choices of the Hamiltonian. We derive conditions for the existence of constants of motion and apply the formalism to the case of spherically symmetric spacetimes. We show that the periastron of a spinning body in a stable orbit in a Schwarzschild or Reissner-Nordstrøm background not only precesses but also varies radially. By analyzing the stability conditions for circular motion we find the innermost stable circular orbit (ISCO) as a function of spin. It turns out that there is an absolute lower limit on the ISCOs for increasing prograde spin. Finally we establish that the equations of motion can also be derived from the Einstein equations using an appropriate energy-momentum tensor for spinning particles.

  17. Hexatic undulations in curved geometries.

    PubMed

    Lenz, Peter; Nelson, David R

    2003-03-01

    We discuss the influence of two-dimensional hexatic order on capillary waves and undulation modes in spherical and cylindrical geometries. In planar geometries, extended bond-orientational order has only a minor effect on the fluctuations of liquid surfaces or lipid bilayers. However, in curved geometries, the long-wavelength spectrum of these ripples is altered. We calculate this frequency shift and discuss applications to spherical vesicles, liquid metal droplets, bubbles and cylindrical jets coated with surface-active molecules, and to multielectron bubbles in liquid helium at low temperatures. Hexatic order also leads to a shift in the threshold for the fission instability of charged droplets and bubbles, and for the Plateau-Rayleigh instability of liquid jets. PMID:12689068

  18. Process window control using CDU master

    NASA Astrophysics Data System (ADS)

    Fujiwara, Tomoharu; Toki, Tsuyoshi; Tanaka, Daishi; Sato, Maki; Kosugi, Junichi; Tanaka, Rika; Sakasai, Naruo; Ohashi, Toshio; Nakasone, Ryoko; Tokui, Akira

    2012-03-01

    As double patterning techniques such as spacer double/quadruple patterning mature, ArF water immersion lithography is expected to be applied down to the 1x nm hp node or beyond. This will necessitate precise process control solutions to accommodate extremely small process windows. In the case of spacer double/quadruple patterning in particular, CD uniformity of the final feature is strongly related to the lithography performance of the initial pre-spacer feature. CD uniformity of the resist image is affected by many sources. In the case of the exposure tool, CD error on the reticle, as well as exposure dose and focus errors are the key factors. For the resist process, heterogeneity of the stacked resist film thickness, post exposure bake (PEB) plate temperature, and development all have an impact. Furthermore, the process wafer also has error sources that include under-layer non-uniformities or wafer flatness. Fortunately, the majorities of these non-uniformities are quite stable in a volume production process. To improve and maintain the CD uniformity, a technique to calculate exposure dose and focus correction values simultaneously using the measured resist image feature was reported previously [1]. Further, a demonstration of a correction loop using a neural network calculation model was reported in SPIE 2010 [2], and the corrected CD uniformity was less than 1.5 nm (3 sigma) within a wafer. For further improvement, a demonstration of precise dose and focus control using high order field-by-field correction was then reported at SPIE 2011[3]. In that work, the interand intra-field CD uniformities reported were less than 1 nm (3 sigma) respectively. A key aspect of this method is the simultaneous compensation of dose and focus offsets, which successfully maximizes the process margin of a target pattern. The Nikon CDU Master then derives the optimal control parameters for each compensation function in the scanner using the exposure dose and focus correction data

  19. Caloric curve of star clusters.

    PubMed

    Casetti, Lapo; Nardini, Cesare

    2012-06-01

    Self-gravitating systems, such as globular clusters or elliptical galaxies, are the prototypes of many-body systems with long-range interactions, and should be the natural arena in which to test theoretical predictions on the statistical behavior of long-range-interacting systems. Systems of classical self-gravitating particles can be studied with the standard tools of equilibrium statistical mechanics, provided the potential is regularized at small length scales and the system is confined in a box. The confinement condition looks rather unphysical in general, so that it is natural to ask whether what we learn with these studies is relevant to real self-gravitating systems. In order to provide an answer to this question, we consider a basic, simple, yet effective model of globular clusters: the King model. This model describes a self-consistently confined system, without the need of any external box, but the stationary state is a nonthermal one. In particular, we consider the King model with a short-distance cutoff on the interactions, and we discuss how such a cutoff affects the caloric curve, i.e., the relation between temperature and energy. We find that the cutoff stabilizes a low-energy phase, which is absent in the King model without cutoff; the caloric curve of the model with cutoff turns out to be very similar to that of previously studied confined and regularized models, but for the absence of a high-energy gaslike phase. We briefly discuss the possible phenomenological as well as theoretical implications of these results. PMID:23005049

  20. AKLSQF - LEAST SQUARES CURVE FITTING

    NASA Technical Reports Server (NTRS)

    Kantak, A. V.

    1994-01-01

    The Least Squares Curve Fitting program, AKLSQF, computes the polynomial which will least square fit uniformly spaced data easily and efficiently. The program allows the user to specify the tolerable least squares error in the fitting or allows the user to specify the polynomial degree. In both cases AKLSQF returns the polynomial and the actual least squares fit error incurred in the operation. The data may be supplied to the routine either by direct keyboard entry or via a file. AKLSQF produces the least squares polynomial in two steps. First, the data points are least squares fitted using the orthogonal factorial polynomials. The result is then reduced to a regular polynomial using Sterling numbers of the first kind. If an error tolerance is specified, the program starts with a polynomial of degree 1 and computes the least squares fit error. The degree of the polynomial used for fitting is then increased successively until the error criterion specified by the user is met. At every step the polynomial as well as the least squares fitting error is printed to the screen. In general, the program can produce a curve fitting up to a 100 degree polynomial. All computations in the program are carried out under Double Precision format for real numbers and under long integer format for integers to provide the maximum accuracy possible. AKLSQF was written for an IBM PC X/AT or compatible using Microsoft's Quick Basic compiler. It has been implemented under DOS 3.2.1 using 23K of RAM. AKLSQF was developed in 1989.