Energy weighted sums of longitudinal response
NASA Astrophysics Data System (ADS)
Schiavilla, R.; Fabrocini, A.; Pandharipande, V. R.
1987-10-01
The energy weighted sums WL( k) of longitudinal response of three- and four-body nuclei and nuclear matter are calculated with realistic nuclear forces and variational wave functions. Results with Faddeev wave functions are also reported for three-body nuclei. The isospin exchange interactions give large contributions to WL( k) and enhance it by 10-80% in the region of interest. We analyze the longitudinal scattering data on 3He, 12C, 40Ca, 48Ca and 56Fe. The WL( k) of 12C, 40Ca, 48Ca and 56Fe are estimated from that of nuclear matter by taking into account its dependence on neutron excess ( N- Z)/ A. The experimental data provide SL( k, ?) at ? < Emax, and in the best cases, 3He ( 12C) at k = 350 MeV/ c, it gives only 86% (68%) of the predicted sum. The response at ? > Emax is assumed to be given by an exponential or square tail that joins the data at ? < Emax, and gives the remainder of WL( k). The contribution of the tail to the longitudinal structure function SL( k) is not too sensitive to its assumed (exponential or square) shape, and greatly improves the agreement between experiment and theory of SL( k).
Character Sums over Integers with Restricted gary Digits #
Shparlinski, Igor
of their digits in a fixed base g # 2. Our main tools are the Weil and Vinogradov bounds for character sums, f) = X n#G s (r) e p (f(n)), where e p (z) = e 2#iz/p . Moreover, in this case, using the Vinogradov
The energy-weighted sum rule and the nuclear radius
NASA Astrophysics Data System (ADS)
Schröder, Hans Peter
2015-09-01
The energy-weighted integrated cross-section for photon absorption --known as sum rule -- is under certain conditions proportional to the mean square nuclear radius (Levinger, Bethe (Phys. Rev. 78, 115 (1950))). Due to the energy weight factor the low-energy absorption components are emphasized and the dipole transitions in the region of giant resonances contribute enhanced at . Thus, the cross-section of the full interaction can be replaced in good approximation by the dipole cross-section. Under these aspects, we have calculated and the radii of various gg-nuclei. For our purpose, we have chosen a simple shell model where the integrals can be solved analytically, and the contributions of uncorrelated functions and correlation corrections can be shown explicitly. The mean square radius as a function of differs by a factor of 1.5/0.87 from the previous result of Levinger and Kent (Phys. Rev. 95, 418 (1954)) without correlation corrections. Plotting the function of the correlation corrections and the uncorrelated function as a ratio it shows that tends towards a limit. Finally, our results for the radii of gg-nuclei are in good agreement with recent experiments (I. Angeli, K.P. Marinova, At. Data Nucl. Data Tables 99, 69 (2013)).
Energy-weighted sum rules connecting ?Z?=?2 nuclei within the SO(8) model
Štefánik, Dušan [Comenius University, Mlynská dolina F1, SK-842 48 Bratislava (Slovenia); Šimkovic, Fedor [IEAP CTU, CZ-128 00 Prague, Czech Republic and BLTP, JINR, 141980 Dubna, Moscow region (Russian Federation); Faessler, Amand [Inst. of Theor. Phys., University of Tuebingen, D-72076 Tuebingen (Germany)
2013-12-30
Energy-weighted sum rules associated with ?Z?=?2 nuclei are obtained for the Fermi and the Gamow-Teller operators within the SO(8) model. It is found that there is a dominance of contribution of a single state of the intermediate nucleus to the sum rule. The results confirm founding obtained within the SO(5) model that the energy-weighted sum rules of ?Z?=?2 nuclei are governed by the residual interactions of nuclear Hamiltonian. A short discussion concerning some aspects of energy weighted sum rules in the case of realistic nuclei is included.
A functional MOS transistor featuring gate-level weighted sum and threshold operations
Tadashi Shibata; Tadahiro Ohmi
1992-01-01
A functional MOS transistor is proposed which works more intelligently than a mere switching device. The functional transistor calculates the weighted sum of all input signals at the gate level, and controls the `on' and `off' of the transistor based on the result of such a weighted sum operation. Since the function is quite analogous to that of biological neurons,
Four-Digit Numbers Which Are Squared Sums
ERIC Educational Resources Information Center
Coughlin, Heather; Jue, Brian
2009-01-01
There is a very natural way to divide a four-digit number into 2 two-digit numbers. Applying an algorithm to this pair of numbers, determine how often the original four-digit number reappears. (Contains 3 tables.)
Weighted Sum Transferable Discharge Permit Programs for Control of Multiple Pollutants
NASA Astrophysics Data System (ADS)
Lence, Barbara J.
1991-12-01
Transferable discharge permit (TDP) programs for controlling several pollutants may manage such pollutants as several individual commodities or as a single weighted sum of the various pollutants. This paper shows that the weighted sum permit program may be appropriate for managing pollutants that have an additive or a noninteractive effect on environmental quality. However, under this approach, administrators do not have direct control over the amount of each pollutant that is discharged, and environmental quality may be jeopardized unless the selected weighting factors induce a market equilibrium that satisfies environmental quality standards for the region. Estimates of the cost-effective weighting factors that would tend to satisfy environmental quality standards under such programs are developed here. These estimates require complete water quality information and, in the case of noninteractive pollutants, treatment costs. An approach is described for estimating the cost-effective weighting factors for noninteractive pollutants in cases where treatment cost information is unknown. This approach is demonstrated for a weighted sum TDP program for biochemical oxygen demand (BOD) and phosphorus. The results of this demonstration suggest that for weighted sum permits for these pollutants it is possible to determine a set of weighting factors that achieve adequate environmental protection, cost efficiency, and certainty of system outcome.
Character Sums over Integers with Restricted g-ary Digits
Banks, William D.
2. Our main tools are the Weil and Vinogradov bounds for character sums and exponential sums. Our(z) = e2iz/p . Moreover, in this case, using the Vinogradov-type bound from [16], we are able to estimate
Real time soft-partition-based weighted sum filtering with GPU acceleration
NASA Astrophysics Data System (ADS)
Zhang, Shuqun; Furia, Bryan
2014-09-01
Recently image processing such as noise reduction, restoration, and super-resolution using the soft-partition-based weighted sum filters have shown state-of-the-art results. The partition-based weighted sum filters are spatially adaptive filtering techniques by combining vector quantization and linear finite impulse response filtering, which have been shown to achieve much better results than spatial-invariant filtering methods. However, they are computationally prohibitive for practical applications because of enormous computation involved in both filtering and training. Real-time filtering is impossible even for small image and window sizes. This paper presents fast implementations of the soft-partition-based weighted sum filtering by exploiting the massively parallel processing capabilities of a GPU within the CUDA framework. For the implementations, we focus on memory management and implementation strategies. The performance on various image and window sizes is measured and compared between the GPU-based and CPU-based implementations. The results show that the GPU-based implementations can significantly accelerate computations for the soft-partition-based weighted sum filtering, and make real-time image filtering possible.
Berndt, Bruce C.
WEIGHTED DIVISOR SUMS AND BESSEL FUNCTION SERIES, V BRUCE C. BERNDT, SUN KIM, AND ALEXANDRU double series of Bessel functions that are intimately connected, respectively, with the classical author's research was partially supported by NSA grant H98230-11-1-0200. 1 #12;2 BRUCE C. BERNDT, SUN KIM
Berndt, Bruce C.
WEIGHTED DIVISOR SUMS AND BESSEL FUNCTION SERIES, III BRUCE C. BERNDT, SUN KIM, AND ALEXANDRU's identities, there are three possible interpretations for the double series. In two earlier papers; Secondary, 11P21, 33C10. 1 #12;2 BRUCE C. BERNDT, SUN KIM, AND ALEXANDRU ZAHARESCU as x
Berndt, Bruce C.
WEIGHTED DIVISOR SUMS AND BESSEL FUNCTION SERIES, II BRUCE C. BERNDT, SUN KIM, AND ALEXANDRU, there are three possible interpreta- tions for the double series. In an earlier paper, two of the present authors;2 BRUCE C. BERNDT, SUN KIM, AND ALEXANDRU ZAHARESCU + 1 2 x m=1 n=0 I1 4 m(n + )x m(n + ) + I1 4 m
Weighted sums of orthogonal polynomials related to birth-death processes with killing
Al Hanbali, Ahmad
Weighted sums of orthogonal polynomials related to birth-death processes with killing Erik A. van polynomials arising in the analysis of birth-death processes with killing. Motivated by problems: birth-death process with killing, orthogonal polynomials, quasi- stationary distribution 2000
How Does Sequence Structure Affect the Judgment of Time? Exploring a Weighted Sum of Segments Model
ERIC Educational Resources Information Center
Matthews, William J.
2013-01-01
This paper examines the judgment of segmented temporal intervals, using short tone sequences as a convenient test case. In four experiments, we investigate how the relative lengths, arrangement, and pitches of the tones in a sequence affect judgments of sequence duration, and ask whether the data can be described by a simple weighted sum of…
Effect of nonlinear transformations on correlation between weighted sums in multilayer perceptrons.
Oh, S H; Lee, Y
1994-01-01
Nonlinear transformation is one of the major obstacles to analyzing the properties of multilayer perceptrons. In this letter, we prove that the correlation coefficient between two jointly Gaussian random variables decreases when each of them is transformed under continuous nonlinear transformations, which can be approximated by piecewise linear functions. When the inputs or the weights of a multilayer perceptron are perturbed randomly, the weighted sums to the hidden neurons are asymptotically jointly Gaussian random variables. Since sigmoidal transformation can be approximated piecewise linearly, the correlations among the weighted sums decrease under sigmoidal transformations. Based on this result, we can say that sigmoidal transformation used as the transfer function of the multilayer perceptron reduces redundancy in the information contents of the hidden neurons. PMID:18267821
Nonuniform weighted subsampling for digital image compression
H. Z. Sorial; William E. Lynch
1995-01-01
In this paper, weighted subsampling (WS) a new, nonuniform image subsampling scheme is presented. The autoregressive model with one parameter (AR(1)) is used to model the input image. The proposed technique uses a weighting function to change the sampling pattern so that more samples are taken in important regions of the image. The signal is weighted to change its autocorrelation
Robust and accurate data enrichment statistics via distribution function of sum of weights
Stojmirovi?, Aleksandar; Yu, Yi-Kuo
2010-01-01
Motivation: Term-enrichment analysis facilitates biological interpretation by assigning to experimentally/computationally obtained data annotation associated with terms from controlled vocabularies. This process usually involves obtaining statistical significance for each vocabulary term and using the most significant terms to describe a given set of biological entities, often associated with weights. Many existing enrichment methods require selections of (arbitrary number of) the most significant entities and/or do not account for weights of entities. Others either mandate extensive simulations to obtain statistics or assume normal weight distribution. In addition, most methods have difficulty assigning correct statistical significance to terms with few entities. Results: Implementing the well-known Lugananni–Rice formula, we have developed a novel approach, called SaddleSum, that is free from all the aforementioned constraints and evaluated it against several existing methods. With entity weights properly taken into account, SaddleSum is internally consistent and stable with respect to the choice of number of most significant entities selected. Making few assumptions on the input data, the proposed method is universal and can thus be applied to areas beyond analysis of microarrays. Employing asymptotic approximation, SaddleSum provides a term-size-dependent score distribution function that gives rise to accurate statistical significance even for terms with few entities. As a consequence, SaddleSum enables researchers to place confidence in its significance assignments to small terms that are often biologically most specific. Availability: Our implementation, which uses Bonferroni correction to account for multiple hypotheses testing, is available at http://www.ncbi.nlm.nih.gov/CBBresearch/qmbp/mn/enrich/. Source code for the standalone version can be downloaded from ftp://ftp.ncbi.nlm.nih.gov/pub/qmbpmn/SaddleSum/. Contact: yyu@ncbi.nlm.nih.gov Supplementary information: Supplementary materials are available at Bioinformatics online. PMID:20826881
Representation of the Fourier transform as a weighted sum of the complex error functions
S. M. Abrarov; B. M. Quine
2015-08-05
In this paper we show that a methodology based on a sampling with the Gaussian function of kind $h\\,{e^{ - {{\\left( {t/c} \\right)}^2}}}/\\left( {{c}\\sqrt \\pi } \\right)$, where ${c}$ and $h$ are some constants, leads to the Fourier transform that can be represented as a weighted sum of the complex error functions. Due to remarkable property of the complex error function, the Fourier transform based on the weighted sum can be significantly simplified and expressed in terms of a damping harmonic series. In contrast to the conventional discrete Fourier transform, this methodology results in a non-periodic wavelet approximation. Consequently, the proposed approach may be useful and convenient in algorithmic implementation.
Force reconstruction using the sum of weighted accelerations technique -- Max-Flat procedure
Carne, T.G.; Mayes, R.L.; Bateman, V.I.
1993-12-31
Force reconstruction is a procedure in which the externally applied force is inferred from measured structural response rather than directly measured. In a recently developed technique, the response acceleration time-histories are multiplied by scalar weights and summed to produce the reconstructed force. This reconstruction is called the Sum of Weighted Accelerations Technique (SWAT). One step in the application of this technique is the calculation of the appropriate scalar weights. In this paper a new method of estimating the weights, using measured frequency response function data, is developed and contrasted with the traditional SWAT method of inverting the mode-shape matrix. The technique uses frequency response function data, but is not based on deconvolution. An application that will be discussed as part of this paper is the impact into a rigid barrier of a weapon system with an energy-absorbing nose. The nose had been designed to absorb the energy of impact and to mitigate the shock to the interior components.
Pinched weights and duality violation in QCD sum rules: A critical analysis
Gonzalez-Alonso, Martin; Pich, Antonio [Departament de Fisica Teorica and IFIC, Universitat de Valencia-CSIC, Apartat de Correus 22085, E-46071 Valencia (Spain); Prades, Joaquim [CAFPE and Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, Campus de Fuente Nueva, E-18002 Granada (Spain)
2010-07-01
We analyze the so-called pinched weights, that are generally thought to reduce the violation of quark-hadron duality in finite-energy sum rules. After showing how this is not true in general, we explain how to address this question for the left-right correlator and any particular pinched weight, taking advantage of our previous work [1], where the possible high-energy behavior of the left-right spectral function was studied. In particular, we show that the use of pinched weights allows to determine with high accuracy the dimension six and eight contributions in the operator-product expansion, O{sub 6}=(-4.3{sub -0.7}{sup +0.9})x10{sup -3} GeV{sup 6} and O{sub 8}=(-7.2{sub -5.3}{sup +4.2})x10{sup -3} GeV{sup 8}.
NASA Technical Reports Server (NTRS)
Wallace, G. R.; Weathers, G. D.; Graf, E. R.
1973-01-01
The statistics of filtered pseudorandom digital sequences called hybrid-sum sequences, formed from the modulo-two sum of several maximum-length sequences, are analyzed. The results indicate that a relation exists between the statistics of the filtered sequence and the characteristic polynomials of the component maximum length sequences. An analysis procedure is developed for identifying a large group of sequences with good statistical properties for applications requiring the generation of analog pseudorandom noise. By use of the analysis approach, the filtering process is approximated by the convolution of the sequence with a sum of unit step functions. A parameter reflecting the overall statistical properties of filtered pseudorandom sequences is derived. This parameter is called the statistical quality factor. A computer algorithm to calculate the statistical quality factor for the filtered sequences is presented, and the results for two examples of sequence combinations are included. The analysis reveals that the statistics of the signals generated with the hybrid-sum generator are potentially superior to the statistics of signals generated with maximum-length generators. Furthermore, fewer calculations are required to evaluate the statistics of a large group of hybrid-sum generators than are required to evaluate the statistics of the same size group of approximately equivalent maximum-length sequences.
Indraneel Das; John Dennis
1996-01-01
A standard technique for generating the Pareto set in multicriteria optimizationproblems is to minimize (convex) weighted sums of the different objectives for variousdifferent settings of the weights. However, it is well-known that this method succeedsin getting points from all parts of the Pareto set only when the Pareto curve is convex.This article provides a geometrical argument as to why this
Mass tensor in the Bohr Hamiltonian from the nondiagonal energy weighted sum rules
Jolos, R. V.; Brentano, P. von
2009-04-15
Relations are derived in the framework of the Bohr Hamiltonian that express the matrix elements of the deformation-dependent components of the mass tensor through the experimental data on the energies and the E2 transitions relating the low-lying collective states. These relations extend the previously obtained results for the intrinsic mass coefficients of the well-deformed axially symmetric nuclei on nuclei of arbitrary shape. The expression for the mass tensor is suggested, which is sufficient to satisfy the existing experimental data on the energy weighted sum rules for the E2 transitions for the low-lying collective quadrupole excitations. The mass tensor is determined for {sup 106,108}Pd, {sup 108-112}Cd, {sup 134}Ba, {sup 150}Nd, {sup 150-154}Sm, {sup 154-160}Gd, {sup 164}Dy, {sup 172}Yb, {sup 178}Hf, {sup 188-192}Os, and {sup 194-196}Pt.
How are overlapping time intervals perceived? Evidence for a weighted sum of segments model.
Bryce, Donna; Seifried-Dübon, Tanja; Bratzke, Daniel
2015-03-01
This study investigated the way in which people time two overlapping intervals. Timing models already proposed in the literature predict different effects of the degree of overlap on each estimate, and empirical findings were compared to these predictions. Two unimodal experiments (in which each to-be-timed interval was a visual stimulus) and one bimodal experiment (in which one to-be-timed interval was auditory and the other visual) were conducted. The estimate of the first interval was either unaffected or decreased, and the estimate of the second interval consistently increased as the intervals were more temporally separated. The only model in the literature that could account for such result patterns is a single pacemaker single accumulator structure with an additional recency weighting (see the weighted sum of segments model). That is, participants appear to segment the two overlapping intervals into three non-overlapping and overlapping segments, time these segments separately, and then combine them to estimate each interval. Importantly, a recency weighting, determined by the time that has passed since the end of that segment, is also applied to each segment in the summation process. Further, in the bimodal experiment the order in which the stimuli of different modalities were presented affected the way in which they were timed, a finding that none of the current models can explain. This highlights that a comprehensive model of interval timing must consider not only the modalities of to-be-timed intervals but also the order in which different modalities must be timed. PMID:25703484
Xing, Guodong
2014-01-01
The exponential inequality for weighted sums of a class of linearly negative quadrant dependent random variables is established, which extends and improves the corresponding ones obtained by Ko et al. (2007) and Jabbari et al. (2009). In addition, we also give the relevant precise asymptotics. PMID:24605064
Brock, Billy C.
2008-03-01
Application of Taylor weighting (taper) to an antenna aperture can achieve low peak sidelobes, but combining the Taylor weighting with quantized attenuators and phase shifters at each radiating element will impact the performance of a phased-array antenna. An examination of array performance is undertaken from the simple point of view of the characteristics of the array factor. Design rules and guidelines for determining the Taylor-weighting parameters, the number of bits required for the digital phase shifter, and the dynamic range and number of bits required for the digital attenuator are developed. For a radar application, when each element is fed directly from a transmit/receive module, the total power radiated by the array will be reduced as a result of the taper. Consequently, the issue of whether to apply the taper on both transmit and receive configurations, or only on the receive configuration is examined with respect to two-way sidelobe performance.
Assessment of Weighted Quantile Sum Regression for Modeling Chemical Mixtures and Cancer Risk
Czarnota, Jenna; Gennings, Chris; Wheeler, David C
2015-01-01
In evaluation of cancer risk related to environmental chemical exposures, the effect of many chemicals on disease is ultimately of interest. However, because of potentially strong correlations among chemicals that occur together, traditional regression methods suffer from collinearity effects, including regression coefficient sign reversal and variance inflation. In addition, penalized regression methods designed to remediate collinearity may have limitations in selecting the truly bad actors among many correlated components. The recently proposed method of weighted quantile sum (WQS) regression attempts to overcome these problems by estimating a body burden index, which identifies important chemicals in a mixture of correlated environmental chemicals. Our focus was on assessing through simulation studies the accuracy of WQS regression in detecting subsets of chemicals associated with health outcomes (binary and continuous) in site-specific analyses and in non-site-specific analyses. We also evaluated the performance of the penalized regression methods of lasso, adaptive lasso, and elastic net in correctly classifying chemicals as bad actors or unrelated to the outcome. We based the simulation study on data from the National Cancer Institute Surveillance Epidemiology and End Results Program (NCI-SEER) case–control study of non-Hodgkin lymphoma (NHL) to achieve realistic exposure situations. Our results showed that WQS regression had good sensitivity and specificity across a variety of conditions considered in this study. The shrinkage methods had a tendency to incorrectly identify a large number of components, especially in the case of strong association with the outcome. PMID:26005323
Adaptively weighted code division multiplexing for hierarchical digital broadcasting
NASA Astrophysics Data System (ADS)
Hamazumi, Hiroyuki; Ito, Yasuhiro; Miyazawa, Hiroshi
1995-09-01
This paper describes an adaptively weighted code division multiplexing (AW-CDM) system (a power controlled spread-spectrum multiplexing), and describes its application to the hierarchical digital broadcasting of television signals. The AW-CDM is combined with a multiresolutional video encoder to provide hierarchical transmission. It allows for both high quality services for fixed receivers and lower quality services for mobile/portable receivers. The carrier and clock are robustly regenerated by the use of a spread-spectrum mulitplexed pseudorandom noise (PN) sounder as a reference in the receiver. The PN reference is also used for Rake combining with signals from different paths, and for adaptive equalization (EQ). In a prototype AW-CDM modem, three layers of hierarchical video signals (highs: 5.91 Mbps), middles: 1.50 Mbps, and lows: 0.46 Mbps) are divided into a pair of 64 orthogonal spread-spectrum subchannels, each of which can be given a different priority and therefore a different threshold. In this case, three different thresholds are given. The modem's transmission rate is 9.7 Mbps in the 6 MHz band. Indoor transmission tests confirm that lows (weighted power layer 1), middles (averaged power layer 2), and highs (lightened power layer 3) are retievable under conditions in which the desired to undesired signal ratios (DURs) are respectively 0 dB, 8.5 dB, and 13.5 dB. If the undesired signals are multipaths, these performances are dramatically improved by Rake combining and EQ. The AW-CDM system can be used for 20-30 Mbps advanced television (ATV) transmission in the 6 MHz bandwidth simply by changing the binary inputs into quaternary or octonary inputs.
26 CFR 1.167(b)-3 - Sum of the years-digits method.
Code of Federal Regulations, 2010 CFR
2010-04-01
...years-digits method annual allowances for depreciation are computed by applying changing...Illustrations. Computation of depreciation allowances on a single asset under...a calendar year basis, the annual depreciation allowances are as...
Mesh skin graft and digital pad transfer to reconstruct the weight-bearing surface in a dog
Rahal, Sheila C.; Mortari, Ana C.; Morishin Filho, Milton M.
2007-01-01
A 2-month-old dog was presented with injuries involving both hind paws. Only the 5th digit and its digital pad were present on the right paw. Following a full-thickness skin graft, the 5th digital pad was transferred distal to the metatarsal bones. The transferred pad permitted weight-bearing on the limb. PMID:18189047
Review of innovations in digital health technology to promote weight control.
Thomas, J Graham; Bond, Dale S
2014-01-01
Advances in technology have contributed to the obesity epidemic and worsened health by reducing opportunities for physical activity and by the proliferation of inexpensive calorie-dense foods. However, much of the same technology can be used to counter these troublesome trends by fostering the development and maintenance of healthy eating and physical activity habits. In contrast to intensive face-to-face treatments, technology-based interventions also have the potential to reach large numbers of individuals at low cost. The purpose of this review is to discuss studies in which digital technology has been used for behavioral weight control, report on advances in consumer technology that are widely adopted but insufficiently tested, and explore potential future directions for both. Web-based, mobile (eg, smartphone), virtual reality, and gaming technologies are the focus of discussion. The best evidence exists to support the use of digital technology for self-monitoring of weight-related behaviors and outcomes. However, studies are underway that will provide additional, important information regarding how best to apply digital technology for behavioral weight control. PMID:24664797
Porrazzo, Serena; Morgado, Alonso; San Segundo Bello, David; Cannillo, Francesco; Van Hoof, Chris; Yazicioglu, Refet Firat; van Roermund, Arthur H M; Cantatore, Eugenio
2013-10-01
This paper presents a low-power switched-capacitor ?? modulator for digital hearing-aid applications that features a novel summing successive approximation (SAR). The summing SAR performs multi-bit quantization together with the analog addition required in feed-forward (FF) ?? modulator (??M) topologies, with no attenuation of the input signals and no need for amplifiers. The prototype is implemented in a 0.18- ? m CMOS technology and its measurements demonstrate a dynamic range of 88 dB in 10 kHz bandwidth while consuming 155 ?W from a 1.8 V supply. The combined use of passive addition and SAR quantization reduces the complexity and power consumption of the modulator. The summing SAR ADC quantizer results in a calculated power saving of 40% when compared to a multi-bit FF ??M using active addition and flash quantization. PMID:24232624
A new IIR-type digital fractional order differentiator
Yangquan Chen; Blas M. Vinagre
2003-01-01
A new IIR (infinite impulse response) type digital fractional order dierentiator (DFOD) is proposed by using a new family of first order digital dierentiators expressed in the second order IIR filter form. The integer first order digital dif- ferentiators are obtained by the stable inversion of the weighted sum of Simpson integration rule and the trapezoidal integration rule. The distinguishing
Estimate of the weight in bovine livestock using digital image processing and neural network
NASA Astrophysics Data System (ADS)
Arias, N. A.; Molina, M. L.; Gualdron, Oscar
2004-10-01
A procedure inside the context of artificial vision that estimates the weight in bovine livestock was developed and designed. The input data to the system are images obtained by a videotape camera to color. These images are digitized and preprocessing using filters of elimination of noise; later are implemented and evaluated different segmentation methods that allow to obtain the contour of the animal in semiautomatic form. This process consists of an automatic binarization in its initial stage and an eventual manual adjustment. Later the characteristics that have a strong correlation with the weight of the animal are extracted. These are extracted in a form that is independent of the orientation of the object inside the image. Such characteristics include: the superior area, perimeter, wide of abdomen, wide of haunch, wide of scapula. The estimate of the weight of the animal is made by means of a neural network type feedforward whose inputs feed with the extracted characteristics of the image. Finally the system is evaluated in the number and type of characteristics kept in mind and in the structure of the neural network utilized.
NASA Astrophysics Data System (ADS)
He, Peter; Zhao, Lian; Lu, Jianhua
2013-12-01
In this article, an efficient distributed and parallel algorithm is proposed to maximize the sum-rate and optimize the input distribution policy for the multi-user single input multiple output multiple access channel (MU-SIMO MAC) system with concurrent access within a cognitive radio (CR) network. The single input means that every user has a single antenna and multiple output means that base station(s) has multiple antennas. The main features are: (i) the power distribution for the users is updated by using variable scale factors which effectively and efficiently maximize the objective function at each iteration; (ii) distributed and parallel computation is employed to expedite convergence of the proposed distributed algorithm; and (iii) a novel water-filling with mixed constraints is investigated, and used as a fundamental block of the proposed algorithm. Due to sufficiently exploiting the structure of the proposed model, the proposed algorithm owns fast convergence. Numerical results verify that the proposed algorithm is effective and fast convergent. Using the proposed approach, for the simulated range, the required number of iterations for convergence is two and this number is not sensitive to the increase of the number of users. This feature is quite desirable for large scale systems with dense active users. In addition, it is also worth noting that the proposed algorithm is a monotonic feasible operator to the iteration. Thus, the stop criterion for computation could be easily set up.
RIMELL, Andrew N.; MANSFIELD, Neil J.; PADDAN, Gurmail S.
2014-01-01
Many workers are exposed to noise in their industrial environment. Excessive noise exposure can cause health problems and therefore it is important that the worker’s noise exposure is assessed. This may require measurement by an equipment manufacturer or the employer. Human exposure to noise may be measured using microphones; however, weighting filters are required to correlate the physical noise sound pressure level measurements to the human’s response to an auditory stimulus. IEC 61672-1 and ANSI S1.43 describe suitable weighting filters, but do not explain how to implement them for digitally recorded sound pressure level data. By using the bilinear transform, it is possible to transform the analogue equations given in the standards into digital filters. This paper describes the implementation of the weighting filters as digital IIR (Infinite Impulse Response) filters and provides all the necessary formulae to directly calculate the filter coefficients for any sampling frequency. Thus, the filters in the standards can be implemented in any numerical processing software (such as a spreadsheet or programming language running on a PC, mobile device or embedded system). PMID:25224333
NASA Astrophysics Data System (ADS)
Gang, Jin; Yiqi, Zhuang; Yue, Yin; Miao, Cui
2015-03-01
A novel digitally controlled automatic gain control (AGC) loop circuitry for the global navigation satellite system (GNSS) receiver chip is presented. The entire AGC loop contains a programmable gain amplifier (PGA), an AGC circuit and an analog-to-digital converter (ADC), which is implemented in a 0.18 ?m complementary metal-oxide-semiconductor (CMOS) process and measured. A binary-weighted approach is proposed in the PGA to achieve wide dB-linear gain control with small gain error. With binary-weighted cascaded amplifiers for coarse gain control, and parallel binary-weighted trans-conductance amplifier array for fine gain control, the PGA can provide a 64 dB dynamic range from ?4 to 60 dB in 1.14 dB gain steps with a less than 0.15 dB gain error. Based on the Gaussian noise statistic characteristic of the GNSS signal, a digital AGC circuit is also proposed with low area and fast settling. The feed-backward AGC loop occupies an area of 0.27 mm2 and settles within less than 165 ?s while consuming an average current of 1.92 mA at 1.8 V.
NSDL National Science Digital Library
Illuminations National Council of Teachers of Mathematics
2010-05-20
"Examine the angles in a triangle, quadrilateral, pentagon, hexagon, heptagon or octagon and find a relationship between the number of sides and the sum of the interior angles." (Source: 2000-2012 National Council of Teachers of Mathematics)
Schneider, Iris K.; Parzuchowski, Michal; Wojciszke, Bogdan; Schwarz, Norbert; Koole, Sander L.
2015-01-01
Previous work suggests that perceived importance of an object influences estimates of its weight. Specifically, important books were estimated to be heavier than non-important books. However, the experimental set-up of these studies may have suffered from a potential confound and findings may be confined to books only. Addressing this, we investigate the effect of importance on weight estimates by examining whether the importance of information stored on a data storage device (USB-stick or portable hard drive) can alter weight estimates. Results show that people thinking a USB-stick holds important tax information (vs. expired tax information vs. no information) estimate it to be heavier (Experiment 1) compared to people who do not. Similarly, people who are told a portable hard drive holds personally relevant information (vs. irrelevant), also estimate the drive to be heavier (Experiments 2A,B). PMID:25620942
NASA Technical Reports Server (NTRS)
Vilnrotter, V. A.; Rodemich, E. R.
1994-01-01
An algorithm for estimating the optimum combining weights for the Ka-band (33.7-GHz) array feed compensation system was developed and analyzed. The input signal is assumed to be broadband radiation of thermal origin, generated by a distant radio source. Currently, seven video converters operating in conjunction with the real-time correlator are used to obtain these weight estimates. The algorithm described here requires only simple operations that can be implemented on a PC-based combining system, greatly reducing the amount of hardware. Therefore, system reliability and portability will be improved.
A new state reconstructor for digital controls systems using weighted-average measurements
NASA Technical Reports Server (NTRS)
Polites, Michael E.
1989-01-01
A state reconstructor is presented for a linear continuous-time plant driven by a zero-order-hold. It takes a continuous-time output vector from the plant and convolutes it with a weighting-function matrix whose elements are time dependent. This result is integrated over T second intervals to generate weighted-averaged measurements, every T seconds, that are used in the state reconstruction process. If the plant is noise-free and can be modeled precisely, the output of this state reconstructor exactly equals the true state of the plant and accomplishes this without knowledge of the plant's initial state. If noise or modeling errors are a problem, it can be catenated with a state observer or a Kalman filter for a synergistic effect.
NASA Astrophysics Data System (ADS)
Kalmykov, Mikhail Yu.; Ward, Bennie F. L.; Yost, Scott A.
2007-10-01
We continue the study of the construction of analytical coefficients of the ?-expansion of hypergeometric functions and their connection with Feynman diagrams. In this paper, we show the following results: Theorem A: The multiple (inverse) binomial sums \\sum_{j=1}^\\infty\\frac{1}{\\binom{2j}{j}^k}\\frac{z^j}{j^c} S_{a_1}(j-1) \\cdots S_{a_p}(j-1) , where k = ±1, Sa(j) is a harmonic series, Sa(j) = ?jk = 1 1/ka, and c is any integer number are expressible in terms of Remiddi-Vermaseren functions; Theorem B: The hypergeometric functions {}_pF_{p-1}\\bigg(\\vec{A} \\!+\\! \\vec{a}\\ep; \\vec{B} \\!+\\! \\vec{b} \\ep, \\frac{1}{2} \\!+\\! B_{p-1}; z\\bigg) , \\qquad {}_pF_{p-1}\\bigg(\\vec{A} \\!+\\! \\vec{a}\\ep, \\frac{1}{2} \\!+\\! A_{p} ; \\vec{B} \\!+\\! \\vec{b} \\ep ;z\\bigg) , are expressible in terms of the harmonic polylogarithms of Remiddi and Vermaseren with coefficients that are ratios of polynomials.
NSDL National Science Digital Library
2011-01-01
In this probability game for two students, each player predicts the sum of the two numbers that will be rolled for each of 12 rolls of a pair of dice and then records his/her predictions on the game sheet. Students play the game and the player whose predictions were the most accurate wins. After the game has been played through once, students are given an opportunity to revise their strategy and play again. Creating a table of theoretical probabilities after the first round of play will help student develop their strategies.
M. Yu. Kalmykov; B. F. L. Ward; S. A. Yost
2007-10-02
We continue the study of the construction of analytical coefficients of the epsilon-expansion of hypergeometric functions and their connection with Feynman diagrams. In this paper, we show the following results: Theorem A: The multiple (inverse) binomial sums of arbitrary weight and depth (see Eq. (1.1)) are expressible in terms of Remiddi-Vermaseren functions. Theorem B: The epsilon expansion of a hypergeometric function with one half-integer value of parameter (see Eq. (1.2)) is expressible in terms of the harmonic polylogarithms of Remiddi and Vermaseren with coefficients that are ratios of polynomials. Some extra materials are available via the www at this http://theor.jinr.ru/~kalmykov/hypergeom/hyper.html
A sum rule for charged elementary particles
Gerd Leuchs; Luis L. Sanchez-Soto
2013-01-15
There may be a link between the quantum properties of the vacuum and the parameters describing the properties of light propagation, culminating in a sum over all types of elementary particles existing in Nature weighted only by their squared charges and independent of their masses. The estimate for that sum is of the order of 100.
Digitally controlled distributed phase shifter
Hietala, V.M.; Kravitz, S.H.; Vawter, G.A.
1992-12-31
A digitally controlled distributed phase shifter is comprised of N phase shifters. Digital control is achieved by using N binary length-weighted electrodes located on the top surface of a waveguide. A control terminal is attached to each electrode thereby allowing the application of a control signal. The control signal is either one of two discrete bias voltages. The application of the discrete bias voltages change the modal index of a portion of the waveguide that corresponds to a length of the electrode to which the bias voltage is applied, thereby causing the phase to change through the underlying portion of the waveguide. The digitally controlled distributed phase shift network has a total phase shift comprised of the sum of the individual phase shifters.
Digitally controlled distributed phase shifter
Hietala, Vincent M. (Placitas, NM); Kravitz, Stanley H. (Placitas, NM); Vawter, Gregory A. (Albuquerque, NM)
1993-01-01
A digitally controlled distributed phase shifter is comprised of N phase shifters. Digital control is achieved by using N binary length-weighted electrodes located on the top surface of a waveguide. A control terminal is attached to each electrode thereby allowing the application of a control signal. The control signal is either one or two discrete bias voltages. The application of the discrete bias voltages changes the modal index of a portion of the waveguide that corresponds to a length of the electrode to which the bias voltage is applied, thereby causing the phase to change through the underlying portion of the waveguide. The digitally controlled distributed phase shift network has a total phase shift comprised of the sum of the individual phase shifters.
Digitally controlled distributed phase shifter
Hietala, V.M.; Kravitz, S.H.; Vawter, G.A.
1993-08-17
A digitally controlled distributed phase shifter is comprised of N phase shifters. Digital control is achieved by using N binary length-weighted electrodes located on the top surface of a waveguide. A control terminal is attached to each electrode thereby allowing the application of a control signal. The control signal is either one or two discrete bias voltages. The application of the discrete bias voltages changes the modal index of a portion of the waveguide that corresponds to a length of the electrode to which the bias voltage is applied, thereby causing the phase to change through the underlying portion of the waveguide. The digitally controlled distributed phase shift network has a total phase shift comprised of the sum of the individual phase shifters.
Design methodology for configurable analog to digital conversion using support vector machines
V. Girish; Jayadeva; S. Nooshabadi
2008-01-01
We apply a support vector machine (SVM) classifier to the design of analog to digital converters. Each output bit of the converter is the output of a binary classifier, which is a nonlinear SVM. The classifier effectively learns a folding characteristic for each bit, which is realized as the weighted sum of a set of kernel functions. In our proposal,
Burke, Lauri A.; Kinney, Scott A.; Kola-Kehinde, Temidayo B.
2011-01-01
This document provides the digital archive of in-situ temperature and drilling mud weight pressure data that were compiled from several historical sources. The data coverage includes the states of Texas and Louisiana in the Gulf of Mexico basin. Data are also provided graphically, for both Texas and Louisiana, as plots of temperature as a function of depth and pressure as a function of depth. The minimum, arithmetic average, and maximum values are tabulated for each 1,000-foot depth increment for temperature as well as pressure in the Texas and Louisiana data.
A single 1.5-V digital chip for a 106 synapse neural network
T. Watanabe; K. Kimura; M. Aoki; T. Sakata; K. Ito
1993-01-01
A digital-chip architecture for a 106-synapse neural network is proposed. It runs on a 1.5-V dry cell to allow its use in portable equipment. An on-chip DRAM cell array stores synapse weights digitally to provide easy programmability and automatic refreshing. A pitch-matched interconnection and a combinational unit circuit for summing product allow a tight layout. A dynamic data transfer circuit
NASA Astrophysics Data System (ADS)
Nguyen, P. D.; Danda, A.; Embouazza, M.; Gazdallah, M.; Evrard, P.; Feldheim, V.
2012-06-01
The Spectral Line-based Weighted-Sum-of-Gray-Gases (SLWSGG) model is applied to calculate the gaseous radiative properties of the aero- or oxy-combustion products of low heating value gases issued from steel making process such as Blast Furnace Gas (BFG) as well as of high heating value gases such as Coke Oven Gas (COG) and conventional Natural Gas (NG). The comparison of total emissivities shows that the 3-gray-gases SLWSGG model is in very good agreement with the Hottel and Sarofim's database. The 3-gray-gases SLWSGG model is then integrated into AnsysFluent® Discrete Ordinates method under User Defined Function and CFD simulations are performed using these combined models. The simulations are done, with full combustion-radiation coupling, for steel reheating furnaces firing on three types of gases: BFG, COG and NG. The results are compared with the simulations realized with the 1-gray-gas WSGG model available in AnsysFluent®. The comparison shows that the 1-gray-gas WSGG model highly overestimates the steel discharging temperature as compared to the 3-gray-gases SLWSGG model. Significant temperature differences are observed between the two radiative models, i.e. 116°C, 55°C and 67°C for the BFG, COG and NG cases, respectively. It can be concluded that the 3-gray-gases SLWSGG model should be used to calculate the radiation heat transfer in large industrial furnaces with more accuracy not only for low heating value gases such as BFG but also for high heating value gases such as COG and NG.
ERIC Educational Resources Information Center
Shi, Yixun
2010-01-01
Starting with an interesting number game sometimes used by school teachers to demonstrate the factorization of integers, "sum-difference numbers" are defined. A positive integer n is a "sum-difference number" if there exist positive integers "x, y, w, z" such that n = xy = wz and x ? y = w + z. This paper characterizes all sum-difference numbers…
Windham, Meghan E; Hastings, Elisabeth S; Anding, Roberta; Hergenroeder, Albert C; Escobar-Chaves, Soledad Liliana; Wiemann, Constance M
2014-10-01
The purpose of the study was to investigate the impact of a 7-minute educational and motivational weight-management digital video disc (DVD) that uses real patient/parent testimonials and provider-patient interactions, on adolescent and parent knowledge of obesity-related diseases; readiness, motivation, and self-efficacy to lose weight; connectedness to care provider; and likelihood of return to clinic for follow-up care. A randomized controlled trial was conducted among 40 overweight/obese adolescent participants (22.5% male, 77.5% female, mean age=15.43 years) and their parents (n=38) who visited a referral-only adolescent clinic for the first time from October 2009 to March 2010. Adolescents were randomly assigned by a research assistant to standard care alone or standard care plus DVD. Standard care (protocol-driven medical and nutritional assessment and counseling) was provided to all adolescents by a registered dietitian nutritionist and physician or nurse practitioner. Adolescents in the intervention group also viewed the DVD. Adolescents and parents completed assessments pre- and post-clinic visit. Repeated measures analysis of covariance was used to evaluate group differences, while controlling for race/ethnicity and age. Parents who viewed the DVD experienced greater improvements in obesity-related disease knowledge than parents who did not view the DVD. Adolescents in both groups improved on measures of motivation to lose weight and dieting self-efficacy, based on pre and post-test questionnaires. A 7-minute educational and motivational DVD helped improve parent knowledge, but was not more powerful than standard care alone in changing other weight-related outcomes in this adolescent clinic. Because it led to increased parental knowledge, incorporating the DVD into clinical practice could also allow more time for health providers to focus on specific obesity-related treatment/education. Future research might examine whether the DVD has more utility in different settings, such as primary care. PMID:24882205
Shi, Yun; Xu, Peiliang; Peng, Junhuan; Shi, Chuang; Liu, Jingnan
2013-01-01
Modern observation technology has verified that measurement errors can be proportional to the true values of measurements such as GPS, VLBI baselines and LiDAR. Observational models of this type are called multiplicative error models. This paper is to extend the work of Xu and Shimada published in 2000 on multiplicative error models to analytical error analysis of quantities of practical interest and estimates of the variance of unit weight. We analytically derive the variance-covariance matrices of the three least squares (LS) adjustments, the adjusted measurements and the corrections of measurements in multiplicative error models. For quality evaluation, we construct five estimators for the variance of unit weight in association of the three LS adjustment methods. Although LiDAR measurements are contaminated with multiplicative random errors, LiDAR-based digital elevation models (DEM) have been constructed as if they were of additive random errors. We will simulate a model landslide, which is assumed to be surveyed with LiDAR, and investigate the effect of LiDAR-type multiplicative error measurements on DEM construction and its effect on the estimate of landslide mass volume from the constructed DEM. PMID:24434880
Goadrich, Mark
of Babylon Combinatorial Game Theory Easy Cases Notation One or Two Red Odd Sum Cases Conclusions and Open Cases Odd Sum Cases Conclusions and Open Questions Overview of Babylon Combinatorial Game Theory Rules Combinatorial Game Theory Rules of the Game 12 tokens, 3 in each of 4 colors. Two players take turns combining
Fixed-Velocity Chiral Sum Rules for Nuclear Matter
Cohen, T D; Cohen, Thomas D.; Broniowski, Wojciech
1997-01-01
Infinite sets of sum rules involving the excitations of infinite nuclear matter are derived using only completeness, the current algebra implicit in QCD, and relativistic covariance. The sum rules can be used for isospin-asymmetric nuclear matter, including neutron matter. They relate the chiral condensate and the isospin density to weighted sums over states with fixed velocity relative to the nuclear matter ground state.
Fungible Weights in Multiple Regression
ERIC Educational Resources Information Center
Waller, Niels G.
2008-01-01
Every set of alternate weights (i.e., nonleast squares weights) in a multiple regression analysis with three or more predictors is associated with an infinite class of weights. All members of a given class can be deemed "fungible" because they yield identical "SSE" (sum of squared errors) and R[superscript 2] values. Equations for generating…
DMT of weighted Parallel Channels: Application to Broadcast Channel
Mroueh, Lina; Othman, Ghaya Rekaya-Ben; Belfiore, Jean-Claude
2008-01-01
In a broadcast channel with random packet arrival and transmission queues, the stability of the system is achieved by maximizing a weighted sum rate capacity with suitable weights that depend on the queue size. The weighted sum rate capacity using Dirty Paper Coding (DPC) and Zero Forcing (ZF) is asymptotically equivalent to the weighted sum capacity over parallel single-channels. In this paper, we study the Diversity Multiplexing Tradeoff (DMT) of the fading broadcast channel under a fixed weighted sum rate capacity constraint. The DMT of both identical and different parallel weighted MISO channels is first derived. Finally, we deduce the DMT of a broadcast channel using DPC and ZF precoders.
The Sensitivity of Guttman Weights.
ERIC Educational Resources Information Center
Green, Bert F., Jr.
The use of Guttman weights in scoring tests is discussed. Scores of 2,500 men on one subtest of the CEED-SAT-Verbal Test were examined using cross-validated Guttman weights. Several scores were compared, as follows: Scores obtained from cross-validated Guttman weights; Scores obtained by rounding the Guttman weights to one digit, ranging from 0 to…
A single 1.5-V digital chip for a 106-synapse neural network
T. Watanabe; K. Kimura; M. Aoki; T. Sakata; K. Itoh
1992-01-01
A single-chip architecture for a 106-synapse neural network is proposed. It operates on a 1.5-V dry cell so that it can be used in portable equipment. An on-chip DRAM cell array stores 106 8-b synapse weights digitally. These are readily programmable and refreshable. A pitch-matched interconnection and a combinational unit circuit used for summing product provide a tight layout by
Unit-Weighted Scales Imply Models that Should Be Tested!
ERIC Educational Resources Information Center
Beauducel, Andre; Leue, Anja
2013-01-01
In several studies unit-weighted sum scales based on the unweighted sum of items are derived from the pattern of salient loadings in confirmatory factor analysis. The problem of this procedure is that the unit-weighted sum scales imply a model other than the initially tested confirmatory factor model. In consequence, it remains generally unknown…
The Robust Weighted Multi-Objective Game
2015-01-01
This paper studies a class of multi-objective n-person non-zero sum games through a robust weighted approach where each player has more than one competing objective. This robust weighted multi-objective game model assumes that each player attaches a set of weights to its objectives instead of accessing accurate weights. Each player wishes to minimize its maximum weighted sum objective where the maximization is pointing to the set of weights. To address this new model, a new equilibrium concept-robust weighted Nash equilibrium is obtained. The existence of this new concept is proven on suitable assumptions about the multi-objective payoffs. PMID:26406986
Iterated binomial sums and their associated iterated integrals
NASA Astrophysics Data System (ADS)
Ablinger, J.; Blümlein, J.; Raab, C. G.; Schneider, C.
2014-11-01
We consider finite iterated generalized harmonic sums weighted by the binomial binom{2k}{k} in numerators and denominators. A large class of these functions emerges in the calculation of massive Feynman diagrams with local operator insertions starting at 3-loop order in the coupling constant and extends the classes of the nested harmonic, generalized harmonic, and cyclotomic sums. The binomially weighted sums are associated by the Mellin transform to iterated integrals over square-root valued alphabets. The values of the sums for N ? ? and the iterated integrals at x = 1 lead to new constants, extending the set of special numbers given by the multiple zeta values, the cyclotomic zeta values and special constants which emerge in the limit N ? ? of generalized harmonic sums. We develop algorithms to obtain the Mellin representations of these sums in a systematic way. They are of importance for the derivation of the asymptotic expansion of these sums and their analytic continuation to N in {C}. The associated convolution relations are derived for real parameters and can therefore be used in a wider context, as, e.g., for multi-scale processes. We also derive algorithms to transform iterated integrals over root-valued alphabets into binomial sums. Using generating functions we study a few aspects of infinite (inverse) binomial sums.
Systematics of strength function sum rules
Calvin W. Johnson
2015-08-27
Sum rules provide useful insights into transition strength functions and are often expressed as expectation values of an operator. In this letter I demonstrate that non-energy-weighted transition sum rules have strong secular dependences on the energy of the initial state. Such non-trivial systematics have consequences: the simplification suggested by the generalized Brink-Axel hypothesis, for example, does not hold for most cases, though it weakly holds in at least some cases for electric dipole transitions. Furthermore, I show the systematics can be understood through spectral distribution theory, calculated via traces of operators and of products of operators. Seen through this lens, violation of the generalized Brink-Axel hypothesis is unsurprising: one \\textit{expects} sum rules to evolve with excitation energy. Furthermore, to lowest order the slope of the secular evolution can be traced to a component of the Hamiltonian being positive (repulsive) or negative (attractive).
Summing free unitary random matrices.
Jarosz, Andrzej
2011-07-01
I use quaternion free probability calculus--an extension of free probability to non-Hermitian matrices (which is introduced in a succinct but self-contained way)--to derive in the large-size limit the mean densities of the eigenvalues and singular values of sums of independent unitary random matrices, weighted by complex numbers. In the case of circular unitary ensemble summands, I write them in terms of two "master equations," which I then solve and numerically test in four specific cases. I conjecture a finite-size extension of these results, exploiting the complementary error function. I prove a central limit theorem, and its first subleading correction, for independent identically distributed zero-drift unitary random matrices. PMID:21867151
NASA Astrophysics Data System (ADS)
Hellmann, Frank
2011-02-01
In this thesis I review the definition of topological quantum field theories through state sums on triangulated manifolds. I describe the construction of state sum invariants of 3-manifolds from a graphical calculus and show how to evaluate the invariants as boundary amplitudes. I review how to define such a graphical calculus through SU(2) representation theory. I then review various geometricity results for the representation theory of SU(2), Spin(4) and SL(2,C), and define coherent boundary manifolds for state sums based on these representations. I derive the asymptotic geometry of the SU(2) based Ponzano-Regge invariant in three dimensions, and the SU(2) based Ooguri models amplitude in four dimensions. As a corollary to the latter results I derive the asymptotic behaviour of various recently proposed spin foam models motivated from the Plebanski formulation of general relativity. Finally the asymptotic geometry of the SL(2,C) based model is derived.
NSDL National Science Digital Library
Daniel Scher
2012-10-08
This second Mystery Sums Sketchpad activity, which opens on Geometer's Sketchpad as well as on iOS with Sketchbook Explorer (cataloged separately), allows learners to use logic and early algebra reasoning skills to find the secret numerical value from -10 to 10 of the letters, A, B, -B and C. Players drag any two letters across a divider to the right to reveal their sum. Students can play the game multiple times, with the computer generating new random values, or they can create challenges for each other to solve. A movie provides detailed instructions and downloadable PDF of teacher notes and student worksheets are also included.
NSDL National Science Digital Library
Daniel Scher
2012-10-08
This third Mystery Sums Sketchpad activity which opens on Geometer's Sketchpad, as well as on iOS with Sketchbook Explorer (cataloged separately) allows learners to use logic and early algebra reasoning skills to find the secret numerical value of ten letters, which are initially from 1-10, but this upper limit can be changed. Players encompass letters within a circle to reveal their sum. Students can play the game multiple times, with the computer generating new random values, or they can create challenges for each other to solve. A movie provides detailed instructions and downloadable PDF of teacher notes and student worksheets are also included.
NASA Astrophysics Data System (ADS)
Granville, Andrew; Soundararajan, K.
2007-04-01
In 1918 Polya and Vinogradov gave an upper bound for the maximal size of character sums, which still remains the best known general estimate. One of the main results of this paper provides a substantial improvement of the Polya-Vinogradov bound for characters of odd, bounded order. In 1977 Montgomery and Vaughan showed how the Polya-Vinogradov inequality may be sharpened assuming the Generalized Riemann Hypothesis. We give a simple proof of their estimate and provide an improvement for characters of odd, bounded order. The paper also gives characterizations of the characters for which the maximal character sum is large, and it finds a hidden structure among these characters.
NSDL National Science Digital Library
2008-06-09
In this calculator activity students complete an experiment on the frequency of sums by rolling two dice fifty times and recording their data. Students record their data in a table using tallies, fractions, decimals, and percent form. Individual data is then compiled into a class chart to identify patterns in data when more trials are conducted. This activity is designed to be completed using the TI-15 Explorer calculator. A PDF of the lesson plan and student sheet is included.
NSDL National Science Digital Library
2014-02-13
Interested in learning about your social media reach? You may want to check out SumAll which is a rather nice way to do just that. After signing up for the free version, visitors will receive a daily digest of their social media influence on over a dozen platforms, including LinkedIn, Twitter, Google+ and others. It's a powerful tool that is compatible with all operating systems.
NSDL National Science Digital Library
Lai, Robert
2006-01-01
The spiral is a curve traced by moving either outward or inward about a fixed point called the pole. A Baravelle Spiral is generated by connecting the midpoints of the successive sides of a regular polygon. Triangles will be formed. The process of identifying and repeatedly connecting the midpoints is called iteration. Mathematically, the Baravelle Spiral is a geometric illustration of a concept basic to the Calculus: The sum of an infinite geometric series - an unbounded set of numbers where each term is related by a common ratio, or multiplier, of "r" - converges to a finite number called a limit when 0 < r < 1. Much time in the Calculus curriculum, and its applications in the sciences, focuses on whether a particular mathematical expression has a limit and thus be highly useful. Historically, one of our oldest mathematical documents, the Rhind Papyrus (ca. 1650 BC), offers a set of data thought to represent a geometric series and possibly an understanding of the formula for finding its sum. In this case, the common ratio of r = 7 is obviously NOT less than 1 and leads to 71+72 +73 + 74 + 75 = 19,607. While not a converging series, as in the case of Baravelle Spirals, we appreciate the early Egyptian fascination with sums of series.
Counting Triangles to Sum Squares
ERIC Educational Resources Information Center
DeMaio, Joe
2012-01-01
Counting complete subgraphs of three vertices in complete graphs, yields combinatorial arguments for identities for sums of squares of integers, odd integers, even integers and sums of the triangular numbers.
Redundancy of minimal weight expansions in Pisot bases.
Grabner, Peter J; Steiner, Wolfgang
2011-10-21
Motivated by multiplication algorithms based on redundant number representations, we study representations of an integer n as a sum n=?k?kUk, where the digits ?k are taken from a finite alphabet ? and (Uk)k is a linear recurrent sequence of Pisot type with U0=1. The most prominent example of a base sequence (Uk)k is the sequence of Fibonacci numbers. We prove that the representations of minimal weight ?k|?k| are recognised by a finite automaton and obtain an asymptotic formula for the average number of representations of minimal weight. Furthermore, we relate the maximal number of representations of a given integer to the joint spectral radius of a certain set of matrices. PMID:22163376
``Robinson's sum rule'' revisited
NASA Astrophysics Data System (ADS)
Orlov, Yuri F.
2010-02-01
This discussion revisits two articles on synchrotron radiation damping published in 1958, one by this author and Evgeny K. Tarasov [Zh. Eksp. Teor. Fiz. 34, 651 (1958)ZETFA70044-4510; Sov. Phys. JETP 34, 449 (1958)SPHJAR0038-5646], and one by Kenneth W. Robinson [Phys. Rev. 111, 373 (1958)PHRVAO0031-899X10.1103/PhysRev.111.373]. The latter is the source of what is known as “Robinson’s sum rule.” Both present the familiar rule, but with very different proofs and calculations of concrete damping decrements. Comparative analysis of these differences reveals serious flaws in Robinson’s proof and calculations.
Analytic and algorithmic aspects of generalized harmonic sums and polylogarithms
Ablinger, Jakob; Schneider, Carsten; Blümlein, Johannes
2013-08-15
In recent three-loop calculations of massive Feynman integrals within Quantum Chromodynamics (QCD) and, e.g., in recent combinatorial problems the so-called generalized harmonic sums (in short S-sums) arise. They are characterized by rational (or real) numerator weights also different from ±1. In this article we explore the algorithmic and analytic properties of these sums systematically. We work out the Mellin and inverse Mellin transform which connects the sums under consideration with the associated Poincaré iterated integrals, also called generalized harmonic polylogarithms. In this regard, we obtain explicit analytic continuations by means of asymptotic expansions of the S-sums which started to occur frequently in current QCD calculations. In addition, we derive algebraic and structural relations, like differentiation with respect to the external summation index and different multi-argument relations, for the compactification of S-sum expressions. Finally, we calculate algebraic relations for infinite S-sums, or equivalently for generalized harmonic polylogarithms evaluated at special values. The corresponding algorithms and relations are encoded in the computer algebra package HarmonicSums.
Locating the Extrema of Fungible Regression Weights
ERIC Educational Resources Information Center
Waller, Niels G.; Jones, Jeff A.
2009-01-01
In a multiple regression analysis with three or more predictors, every set of alternate weights belongs to an infinite class of "fungible weights" (Waller, Psychometrica, "in press") that yields identical "SSE" (sum of squared errors) and R[superscript 2] values. When the R[superscript 2] using the alternate weights is a fixed value, fungible…
Alok Kumar
2010-02-25
We cannot use directly the results of zero-temperature at finite temperature, for at finite temperature the average is to be carried over all highly degenerate excited states unlike zero-temperature average is only on unique ground state. One of the formal way to take into account the finite temperature into quantum field theory is due to Matsubara, to replace temporal component of eigenvalues $k_{4}$ by $\\omega_{n}=\\frac{2\\pi n}{\\beta}$ $(\\frac{2\\pi (n+{1/2})}{\\beta})$ with summation over all integer values of $n$. The summation is done with the infinite series expansion of $\\coth (\\pi y)$. With the chemical potential $\\mu$, $\\omega_{n}$ will be replaced by $\\omega_{n} - \\mu$ in the eigenvalues and the summation over $n$ cannot be done easily. Various methods exist to evaluate it. We use the infinite series expansion of $\\coth (\\pi y)$ to work operationally for such Matsubara frequency sums.
Clustering by weighted cuts in directed graphs Marina Meila
Fazel, Maryam
] construct a symmetric ma- trix from A as the Laplacian of an operator representing a weighted sum of co, . . . n}. Therefore, in a graph representation, Aij would represent the weight on the directed edge ij
Hadjicostis, Christoforos
Distributed Weight Balancing over Digraphs Apostolos I. Rikos, Member, IEEE, Themistoklis is balanced if, for each node, the sum of the weights of the edges outgoing from that node is equal to the sum of the weights of the edges incoming to that node. Weight-balanced digraphs play a key role in a number
NSDL National Science Digital Library
N/A N/A (None; )
2005-12-11
Your skin covers and protects your body. Your skin can also detect pressure and weight. You can tell that a one gram weight feels lighter than a one kilogram weight because the receptors on your skin detect more pressure from a one kilogram weight compared to a one gram weight.
NSDL National Science Digital Library
2012-05-18
Weights and measures may not be the first thing that most people wake up in the morning thinking about, but such matters are terribly important. The National Institute of Standards and Technology (NIST) has created this site to provide information to concerned stakeholders about the work of their Office of Weights and Measures. The mission of the Office is to promote "uniformity in U.S. weights and measures laws, regulations, and standards to achieve equity between buyers and sellers in the marketplaces." On the right hand side of the page, visitors can look over a Resources area. Here they will find educational materials, information on the National Conference on Weights and Measures, past newsletters, and a rather fine digital exhibit that traces "the struggle to achieve weights and measures standardization" in the United States. On the left-hand side of the page, visitors can learn more about price verification, packaging and labeling, and the metric system.
Recurrence Formulas for Fibonacci Sums
Adilson J. V. Brandao; Joao L. Martins
2008-05-18
In this article we present a new recurrence formula for a finite sum involving the Fibonacci sequence. Furthermore, we state an algorithm to compute the sum of a power series related to Fibonacci series, without the use of term-by-term differentiation theorem
Weinberg like sum rules revisited
S. S. Afonin
2007-10-29
The generalized Weinberg sum rules containing the difference of isovector vector and axial-vector spectral functions saturated by both finite and infinite number of narrow resonances are considered. We summarize the status of these sum rules and analyze their overall agreement with phenomenological Lagrangians, low-energy relations, parity doubling, hadron string models, and experimental data.
Recurrence Formulas for Fibonacci Sums
Brandao, Adilson J V
2008-01-01
In this article we present a new recurrence formula for a finite sum involving the Fibonacci sequence. Furthermore, we state an algorithm to compute the sum of a power series related to Fibonacci series, without the use of term-by-term differentiation theorem
Wire weight is lowered to water surface to measure stage at a site. Levels are made to the wire weights elevation from known benchmarks to ensure correct readings. This wire weight is located along the Missouri River in Bismarck, ND....
Multiple Fundamental Frequency Estimation by Summing Harmonic Amplitudes
Anssi Klapuri
2006-01-01
This paper proposes a conceptually simple and computa- tionally efficient fundamental frequency (F0) estimator for polyphonic music signals. The studied class of estimators calculate the salience, or strength, of a F0 candidate as a weighted sum of the amplitudes of its harmonic partials. A mapping from the Fourier spectrum to a \\
Generalized Harmonic, Cyclotomic, and Binomial Sums, their Polylogarithms and Special Numbers
NASA Astrophysics Data System (ADS)
Ablinger, J.; Blümlein, J.; Schneider, C.
2014-06-01
A survey is given on mathematical structures which emerge in multi-loop Feynman diagrams. These are multiply nested sums, and, associated to them by an inverse Mellin transform, specific iterated integrals. Both classes lead to sets of special numbers. Starting with harmonic sums and polylogarithms we discuss recent extensions of these quantities as cyclotomic, generalized (cyclotomic), and binomially weighted sums, associated iterated integrals and special constants and their relations.
47 CFR 65.305 - Calculation of the weighted average cost of capital.
Code of Federal Regulations, 2010 CFR
2010-10-01
...Calculation of the weighted average cost of capital. (a) The composite weighted average cost of capital is the sum of the cost of debt, the...each weighted by its proportion in the capital structure of the telephone companies....
NASA Technical Reports Server (NTRS)
Hinson, E. W.
1981-01-01
The preliminary analysis and data analysis system development for the shuttle upper atmosphere mass spectrometer (SUMS) experiment are discussed. The SUMS experiment is designed to provide free stream atmospheric density, pressure, temperature, and mean molecular weight for the high altitude, high Mach number region.
Tate, Deborah
2011-01-01
Background Previous interventions have shown promising results using theory-based podcasts to deliver a behavioral weight-loss intervention. Objective The objective of our study was to examine whether a combination of podcasting, mobile support communication, and mobile diet monitoring can assist people in weight loss. Methods In this 6-month, minimal contact intervention, overweight (n = 96, body mass index 32.6 kg/m2) adults were recruited through television advertisements and email listservs and randomly assigned to Podcast-only or Podcast+Mobile groups. Both groups received 2 podcasts per week for 3 months and 2 minipodcasts per week for months 3–6. In addition to the podcasts, the Podcast+Mobile group was also instructed to use a diet and physical activity monitoring application (app) on their mobile device and to interact with study counselors and other participants on Twitter. Results Weight loss did not differ by group at 6 months: mean –2.7% (SD 5.6%) Podcast+Mobile, n = 47; mean –2.7% (SD 5.1%) Podcast, n = 49; P = .98. Days/week of reported diet monitoring did not differ between Podcast+Mobile (mean 2.3, SD 1.9 days/week) and Podcast groups (mean 1.9, SD 1.7 days/week; P = .28) but method of monitoring did differ. Podcast+Mobile participants were 3.5 times more likely than the Podcast group to use an app to monitor diet (P = .01), whereas the majority of Podcast participants reported using the Web (14/41, 34%) or paper (12/41, 29%). There were more downloads per episode in the Podcast+Mobile group (1.4/person) than in the Podcast group (1.1/person; P < .001). The number of podcasts participants reported downloading over the 6-month period was significantly moderately correlated with weight loss in both the Podcast+Mobile (r = –.46, P = .001) and the Podcast (r = –.53, P < .001) groups. Podcast+Mobile participants felt more user control at 3 months (P = .02), but not at 6 months, and there was a trend (P = .06) toward greater elaboration among Podcast+Mobile participants. There were significant differences in reported source of social support between groups. More Podcast participants relied on friends (11/40, 28% vs 4/40, 10%; P = .045) whereas Podcast+Mobile participants relied on online sources (10/40, 25% vs 0/40; P = .001). Conclusions Results confirm and extend previous findings showing a minimally intensive weight-loss intervention can be delivered via podcast, but prompting and mobile communication via Twitter and monitoring app without feedback did not enhance weight loss. Trial Registration Clinicaltrials.gov NCT01139255; http://clinicaltrials.gov/ct2/show/NCT01139255 (Archived by WebCite at http://www.webcitation.org/625OjhiDy) PMID:22186428
John W. Tukey
1948-01-01
The greatest fractional increase in variance when a weighted mean is calculated with approximate weights is, quite closely, the square of the largest fractional error in an individual weight. The average increase will be about one-half this amount. The use of weights accurate to two significant figures, or even to the nearest number of the form: 10, 11, 12, 12,
Complex-energy approach to sum rules within nuclear density functional theory
Nobuo Hinohara; Markus Kortelainen; Witold Nazarewicz; Erik Olsen
2015-01-28
The linear response of the nucleus to an external field contains unique information about the effective interaction, correlations, and properties of its excited states. To characterize the response, it is useful to use its energy-weighted moments, or sum rules. By comparing computed sum rules with experimental values, the information content of the response can be utilized in the optimization process of the nuclear Hamiltonian or EDF. But the additional information comes at a price: compared to the ground state, computation of excited states is more demanding. To establish an efficient framework to compute sum rules of the response that is adaptable to the optimization of the nuclear EDF and large-scale surveys of collective strength, we have developed a new technique within the complex-energy FAM based on the QRPA. To compute sum rules, we carry out contour integration of the response function in the complex-energy plane. We benchmark our results against the conventional matrix formulation of the QRPA theory, the Thouless theorem for the energy-weighted sum rule, and the dielectric theorem for the inverse energy-weighted sum rule. We demonstrate that calculated sum-rule values agree with those obtained from the matrix formulation of the QRPA. We also discuss the applicability of both the Thouless theorem about the energy-weighted sum rule and the dielectric theorem for the inverse energy-weighted sum rule to nuclear density functional theory in cases when the EDF is not based on a Hamiltonian. The proposed sum-rule technique based on the complex-energy FAM is a tool of choice when optimizing effective interactions or energy functionals. The method is very efficient and well-adaptable to parallel computing. The FAM formulation is especially useful when standard theorems based on commutation relations involving the nuclear Hamiltonian and external field cannot be used.
... thyroid problems, heart failure, and kidney disease. Good nutrition and exercise can help in losing weight. Eating extra calories within a well-balanced diet and treating any underlying medical problems can help to add weight.
... obese. Achieving a healthy weight can help you control your cholesterol, blood pressure and blood sugar. It ... use more calories than you eat. A weight-control strategy might include Choosing low-fat, low-calorie ...
... weight... Read full story >> Healthy Weight Loss share Body Image: It's Not Just About How You See Your ... your own skin share The ABC's of Positive Body Image Feeling comfortable in your own skin can be ...
... problem. Causes for sudden weight loss can include Thyroid problems Cancer Infectious diseases Digestive diseases Certain medicines Sudden weight gain can be due to medicines, thyroid problems, heart failure, and kidney disease. Good nutrition ...
... weight, the calories you eat must equal the energy you burn. To lose weight, you must use more calories than you eat. A weight-control strategy might include Choosing low-fat, low-calorie foods Eating smaller portions Drinking water instead of sugary drinks Being physically active Eating ...
Gain weighted eigenspace assignment
NASA Technical Reports Server (NTRS)
Davidson, John B.; Andrisani, Dominick, II
1994-01-01
This report presents the development of the gain weighted eigenspace assignment methodology. This provides a designer with a systematic methodology for trading off eigenvector placement versus gain magnitudes, while still maintaining desired closed-loop eigenvalue locations. This is accomplished by forming a cost function composed of a scalar measure of error between desired and achievable eigenvectors and a scalar measure of gain magnitude, determining analytical expressions for the gradients, and solving for the optimal solution by numerical iteration. For this development the scalar measure of gain magnitude is chosen to be a weighted sum of the squares of all the individual elements of the feedback gain matrix. An example is presented to demonstrate the method. In this example, solutions yielding achievable eigenvectors close to the desired eigenvectors are obtained with significant reductions in gain magnitude compared to a solution obtained using a previously developed eigenspace (eigenstructure) assignment method.
Minimal Weight and Colexicographically Minimal Integer Representations
International Association for Cryptologic Research (IACR)
Minimal Weight and Colexicographically Minimal Integer Representations Clemens Heuberger Institut f of nonzero digits (so-called minimal weight representations). We observe that many of the constructions for minimal weight representations actually work by building representations which are minimal in another
Minimal Weight and Colexicographically Minimal Integer Representations
International Association for Cryptologic Research (IACR)
Minimal Weight and Colexicographically Minimal Integer Representations Clemens Heuberger # Institut a minimal number of nonzero digits (soÂcalled minimal weight representations). We observe that many of the constructions for minimal weight representations actually work by building representations which are minimal
Progressions and Sums Putnam Practice
Albert, John
Progressions and Sums Putnam Practice October 6, 2004 An arithmetic progression is a sequence positive integers. 3. (1979 Putnam) Let x1, x2, x3, ... be a sequence of non-zero real numbers satisfying) + ... + sin((n - 1)/n) = cot(/(2n)) 5. (1972 Putnam) Show that there are no four consecutive binomial co
Frandsen, Mads T. [Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP (United Kingdom); Masina, Isabella [Dip. di Fisica dell'Universita di Ferrara and INFN Sez. di Ferrara, Via Saragat 1, I-44100 Ferrara (Italy); CP3-Origins, University of Southern Denmark, Campusvej 55, DK-5230 Odense M (Denmark); Sannino, Francesco [CP3-Origins, University of Southern Denmark, Campusvej 55, DK-5230 Odense M (Denmark)
2011-06-15
We introduce new sum rules allowing to determine universal properties of the unknown component of the cosmic rays; we show how they can be used to predict the positron fraction at energies not yet explored by current experiments, and to constrain specific models.
Direct Sum Decomposition of Groups
ERIC Educational Resources Information Center
Thaheem, A. B.
2005-01-01
Direct sum decomposition of Abelian groups appears in almost all textbooks on algebra for undergraduate students. This concept plays an important role in group theory. One simple example of this decomposition is obtained by using the kernel and range of a projection map on an Abelian group. The aim in this pedagogical note is to establish a direct…
Indefinite hypergeometric sums in MACSYMA
NASA Technical Reports Server (NTRS)
Gosper, R. W., Jr.
1977-01-01
A MACSYMA function is presented which, given the command a sub n = delta g(n) = g(n+1)-g(n), finds g(n), the indefinite sum, within an additive constant, provided that g(n+1)/g(n) is a rational function of n.
Cluster sum rules for three-body systems with angular-momentum dependent interactions
R. de Diego; E. Garrido; A. S. Jensen; D. V. Fedorov
2008-01-21
We derive general expressions for non-energy weighted and energy-weighted cluster sum rules for systems of three charged particles. The interferences between pairs of particles are found to play a substantial role. The energy-weighted sum rule is usually determined by the kinetic energy operator, but we demonstrate that it has similar additional contributions from the angular momentum and parity dependence of two- and three-body potentials frequently used in three-body calculations. The importance of the different contributions is illustrated with the dipole excitations in $^6$He. The results are compared with the available experimental data.
Digital Demodulator For Advanced Receiver
NASA Technical Reports Server (NTRS)
Sadr, Ramin; Hurd, William J.
1990-01-01
Complexity and cost reduced by new design for half-band filters. Digital demodulator designed for use in reception of phase- and amplitude-modulated digital signals of bandwidths up to 15 MHz on microwave carriers. System performs coherent demodulation in phase and in quadrature with carrier locked in phase to intermediate frequency of 10 MHz. Design suitable for fabrication in very-large-scale integrated circuitry. Principal innovative feature of demodulator is design of half-band digital low-pass filters that remove sum-frequency components.
Precision digital pulse phase generator
McEwan, Thomas E. (Livermore, CA)
1996-01-01
A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code.
Precision digital pulse phase generator
McEwan, T.E.
1996-10-08
A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code. 2 figs.
Sénéchal, Martin; Slaght, Jana; Bouchard, Danielle R
2015-01-01
Objectives. To evaluate if cumulative weight exposure is associated with weight loss strategy choices and weight loss success. Methods. Data from the National Health and Nutrition Examination Survey were used; a total of 4,562 people age 50 years or older who reported trying to lose weight in the last year were studied. Cumulative weight exposure (CWE) score was defined as the sum of body mass index points above 25?kg/m(2) at the age of 25, 10 years ago, 1 year ago, and now. Weight loss strategies were self-reported and weight loss success was defined as reaching a 5% weight loss in the last year. Results. Chosen strategies for weight loss vary across tertiles of CWE. Participants in the highest CWE tertile were about 4 to 20 times more likely to lose at least 5% of body weight in the past year compared to those in the lowest CWE tertile (P < 0.05).??Discussion. Strategies used to lose weight and weight loss success using different weight loss strategies vary considerably across cumulative weight exposure. Thus, cumulative weight exposure might be a variable worth considering when intervening with this population. PMID:26161269
An efficient sampling technique for sums of bandpass functions
NASA Technical Reports Server (NTRS)
Lawton, W. M.
1982-01-01
A well known sampling theorem states that a bandlimited function can be completely determined by its values at a uniformly placed set of points whose density is at least twice the highest frequency component of the function (Nyquist rate). A less familiar but important sampling theorem states that a bandlimited narrowband function can be completely determined by its values at a properly chosen, nonuniformly placed set of points whose density is at least twice the passband width. This allows for efficient digital demodulation of narrowband signals, which are common in sonar, radar and radio interferometry, without the side effect of signal group delay from an analog demodulator. This theorem was extended by developing a technique which allows a finite sum of bandlimited narrowband functions to be determined by its values at a properly chosen, nonuniformly placed set of points whose density can be made arbitrarily close to the sum of the passband widths.
Repeated Reasoning: Products and Sums
NSDL National Science Digital Library
WGHB Boston
2013-01-01
This professional development video clip of students engaged in Common Core Practice Standard #8—Look for and express regularity in repeated reasoning shows a classroom of fourth grade students exploring the relationships between sums and products of numbers when numbers are added to themselves and when they are multiplied by each other. The sum and product of each number is displayed sequentially in an array on grid paper to detect patterns more readily. Additional resources include a video transcript, teaching tips, and a link to a professional development reflection activity based upon the video. A related clip (cataloged separately) shows the same exploration by the same students but Common Core Practice Standard # 7-Look for and make use of structures is evident.
Summing Planar Bosonic Open Strings
Bardakci, Korkut
2006-02-16
In earlier work, planar graphs of massless {phi}{sup 3} theory were summed with the help of the light cone world sheet picture and the mean field approximation. In the present article, the same methods are applied to the problem of summing planar bosonic open strings. They find that in the ground state of the system, string boundaries form a condensate on the world sheet, and a new string emerges from this summation. Its slope is always greater than the initial slope, and it remains non-zero even when the initial slope is set equal to zero. If they assume the initial string tends to a field a theory in the zero slope limit, this result provides evidence for string formation in field theory.
Complex-energy approach to sum rules within nuclear density functional theory
NASA Astrophysics Data System (ADS)
Hinohara, Nobuo; Kortelainen, Markus; Nazarewicz, Witold; Olsen, Erik
2015-04-01
Background: The linear response of the nucleus to an external field contains unique information about the effective interaction, the correlations governing the behavior of the many-body system, and the properties of its excited states. To characterize the response, it is useful to use its energy-weighted moments, or sum rules. By comparing computed sum rules with experimental values, the information content of the response can be utilized in the optimization process of the nuclear Hamiltonian or the nuclear energy density functional (EDF). But the additional information comes at a price: compared to the ground state, computation of excited states is more demanding. Purpose: To establish an efficient framework to compute energy-weighted sum rules of the response that is adaptable to the optimization of the nuclear EDF and large-scale surveys of collective strength, we have developed a new technique within the complex-energy finite-amplitude method (FAM) based on the quasiparticle random-phase approximation (QRPA). Methods: To compute sum rules, we carry out contour integration of the response function in the complex-energy plane. We benchmark our results against the conventional matrix formulation of the QRPA theory, the Thouless theorem for the energy-weighted sum rule, and the dielectric theorem for the inverse-energy-weighted sum rule. Results: We derive the sum-rule expressions from the contour integration of the complex-energy FAM. We demonstrate that calculated sum-rule values agree with those obtained from the matrix formulation of the QRPA. We also discuss the applicability of both the Thouless theorem about the energy-weighted sum rule and the dielectric theorem for the inverse-energy-weighted sum rule to nuclear density functional theory in cases when the EDF is not based on a Hamiltonian. Conclusions: The proposed sum-rule technique based on the complex-energy FAM is a tool of choice when optimizing effective interactions or energy functionals. The method is very efficient and well-adaptable to parallel computing. The FAM formulation is especially useful when standard theorems based on commutation relations involving the nuclear Hamiltonian and the external field cannot be used.
Torque-Summing Brushless Motor
NASA Technical Reports Server (NTRS)
Vaidya, J. G.
1986-01-01
Torque channels function cooperatively but electrically independent for reliability. Brushless, electronically-commutated dc motor sums electromagnetic torques on four channels and applies them to single shaft. Motor operates with any combination of channels and continues if one or more of channels fail electrically. Motor employs single stator and rotor and mechanically simple; however, each of channels electrically isolated from other so that failure of one does not adversely affect others.
Vibrational sum frequency study on biological interfaces
Lim, Soon Mi
2009-06-02
Vibrational sum frequency spectroscopy (VSFS) is a nonlinear optical process. The sum frequency signal is proportional to the square of second order nonlinear susceptibility, which is proportional to the average of ...
NASA Technical Reports Server (NTRS)
Howard, W. H.; Young, D. R.
1972-01-01
Device applies compressive force to bone to minimize loss of bone calcium during weightlessness or bedrest. Force is applied through weights, or hydraulic, pneumatic or electrically actuated devices. Device is lightweight and easy to maintain and operate.
Unknown
2011-08-17
it extremely important that geocoding results be as accurate as possible. Existing global-weighting approaches to geocoding assume spatial stationarity of addressing systems and address data characteristic distributions across space, resulting in heuristics...
Sum rules for baryon decuplet magnetic moments
Soon-Tae Hong
2007-12-03
In chiral models with SU(3) group structure, baryon decuplet and octet magnetic moments are evaluated by constructing their sum rules to yield theoretical predictions. In these sum rules we exploit six experimentally known baryon magnetic moments. Sum rules for flavor components and strange form factors of the octet and decuplet magnetic moments and decuplet-to-octet transition magnetic moments are also investigated.
Sum rules for baryon decuplet magnetic moments
NASA Astrophysics Data System (ADS)
Hong, Soon-Tae
2007-11-01
In chiral models with SU(3) group structure, baryon decuplet, and octet magnetic moments are evaluated by constructing their sum rules to yield theoretical predictions. In these sum rules we exploit six experimentally known baryon magnetic moments. Sum rules for flavor components and strange form factors of the octet and decuplet magnetic moments and decuplet-to-octet transition magnetic moments are also investigated.
ERIC Educational Resources Information Center
Fox, Edward A.; Urs, Shalini R.
2002-01-01
Provides an overview of digital libraries research, practice, and literature. Highlights include new technologies; redefining roles; historical background; trends; creating digital content, including conversion; metadata; organizing digital resources; services; access; information retrieval; searching; natural language processing; visualization;…
Neyman-Pearson biometric score fusion as an extension of the sum rule
NASA Astrophysics Data System (ADS)
Hube, Jens Peter
2007-04-01
We define the biometric performance invariance under strictly monotonic functions on match scores as normalization symmetry. We use this symmetry to clarify the essential difference between the standard score-level fusion approaches of sum rule and Neyman-Pearson. We then express Neyman-Pearson fusion assuming match scores defined using false acceptance rates on a logarithmic scale. We show that by stating Neyman-Pearson in this form, it reduces to sum rule fusion for ROC curves with logarithmic slope. We also introduce a one parameter model of biometric performance and use it to express Neyman-Pearson fusion as a weighted sum rule.
Minimizing the Sum of Completion Times with Resource Dependant Times
NASA Astrophysics Data System (ADS)
Yedidsion, Liron; Shabtay, Dvir; Kaspi, Moshe
2008-10-01
We extend the classical minimization sum of completion times problem to the case where the processing times are controllable by allocating a nonrenewable resource. The quality of a solution is measured by two different criteria. The first criterion is the sum of completion times and the second is the total weighted resource consumption. We consider four different problem variations for treating the two criteria. We prove that this problem is NP-hard for three of the four variations even if all resource consumption weights are equal. However, somewhat surprisingly, the variation of minimizing the integrated objective function is solvable in polynomial time. Although the sum of completion times is arguably the most important scheduling criteria, the complexity of this problem, up to this paper, was an open question for three of the four variations. The results of this research have various implementations, including efficient battery usage on mobile devices such as mobile computer, phones and GPS devices in order to prolong their battery duration.
1. The sum of the ages of all family 2. The square of Grandma's age.
Simonson, Shai
. The per acre value of Dogwood in shillings plus the sum of the digits of one vertical column. 6. Bertha: How old is Carol? 1 2 3 4 5 6 7 8 9 1110 Dogwood is a rectangular farm purchased by the Dunk family
Digital materials for digital fabrication
Popescu, George A
2007-01-01
This thesis introduces digital materials by analogy with digital computation and digital communications. Traditional fabrication techniques include pick-and-place, roll-to-roll, molding, patterning and more. Current research ...
Chip layout optimization using critical path weighting
A. E. Dunlop; V. D. Agrawal; D. N. Deutsch; M. F. Jukl; P. Kozak; M. Wiesel
1984-01-01
A chip layout procedure for optimizing the performance of critical timing paths in a synchronous digital circuit is presented. The procedure uses the path analysis data produced by a static timing analysis program to generate weights for critical nets on clock and data paths. These weights are then used to bias automatic placement and routing in the layout program. This
NSDL National Science Digital Library
2011-04-06
In this lesson students use a rule of thumb about the weight of babies to practice doubling and halving numbers. They complete an organized table and compare data using vertical and horizontal double bar graphs. The lesson includes a student activity sheet and extension ideas.
ERIC Educational Resources Information Center
Yakel, Elizabeth
2001-01-01
Reviews research on digital preservation issues, including born-digital and digitally recreated documents. Discusses electronic records research; metadata and other standards; electronic mail; Web-based documents; moving images media; selection of materials for digitization, including primary sources; administrative issues; media stability…
Equal-Weight Fingerprinting Codes University of California, Riverside, USA
Dumer, Ilya
, a distributor of digital content marks each copy of data with a unique digital fingerprint. This fingerprint copy, which is marked with a new digital fingerprint. We define binary t-fingerprinting codes of lengthEqual-Weight Fingerprinting Codes Ilya Dumer University of California, Riverside, USA dumer
Kostant's weight multiplicity formula and the Fibonacci numbers
Harris, Pamela
2011-01-01
It is well known that the dimension of a weight space for a finite dimensional representation of a simple Lie algebra is given by Kostant's weight multiplicity formula. We address the question of how many terms in the alternation contribute to the multiplicity of the zero weight for certain, very special, highest weights. Specifically, we consider the case where the highest weight is equal to the sum of all simple roots. This weight is dominant only in Lie types $A$ and $B$. We prove that in all such cases the number of contributing terms is a Fibonacci number. Combinatorial consequences of this fact are provided.
Design of an automatic weight scale for an isolette
NASA Technical Reports Server (NTRS)
Peterka, R. J.; Griffin, W.
1974-01-01
The design of an infant weight scale is reported that fits into an isolette without disturbing its controlled atmosphere. The scale platform uses strain gages to measure electronically deflections of cantilever beams positioned at its four corners. The weight of the infant is proportional to the sum of the output voltages produced by the gauges on each beam of the scale.
Tree-Approximations for the Weighted Cost-Distance Problem
Schindelhauer, Christian
and contains . By summing over all edges we define the Weighted Cost-Distance (WCD) of a networkTree-Approximations for the Weighted Cost-Distance Problem (extended abstract) Christian, ETH Zentrum, CH-8092 ZÂ¨urich, Switzerland, weberb@inf.ethz.ch Abstract. We generalize the Cost
NASA Technical Reports Server (NTRS)
1995-01-01
The Attitude Adjuster is a system for weight repositioning corresponding to a SCUBA diver's changing positions. Compact tubes on the diver's air tank permit controlled movement of lead balls within the Adjuster, automatically repositioning when the diver changes position. Manufactured by Think Tank Technologies, the system is light and small, reducing drag and energy requirements and contributing to lower air consumption. The Mid-Continent Technology Transfer Center helped the company with both technical and business information and arranged for the testing at Marshall Space Flight Center's Weightlessness Environmental Training Facility for astronauts.
Accuracy and consistency of weights provided by home bathroom scales
2013-01-01
Background Self-reported body weight is often used for calculation of Body Mass Index because it is easy to collect. Little is known about sources of error introduced by using bathroom scales to measure weight at home. The objective of this study was to evaluate the accuracy and consistency of digital versus dial-type bathroom scales commonly used for self-reported weight. Methods Participants brought functioning bathroom scales (n?=?18 dial-type, n?=?43 digital-type) to a central location. Trained researchers assessed accuracy and consistency using certified calibration weights at 10 kg, 25 kg, 50 kg, 75 kg, 100 kg, and 110 kg. Data also were collected on frequency of calibration, age and floor surface beneath the scale. Results All participants reported using their scale on hard surface flooring. Before calibration, all digital scales displayed 0, but dial scales displayed a mean absolute initial weight of 0.95 (1.9 SD) kg. Digital scales accurately weighed test loads whereas dial-type scale weights differed significantly (p?digital scales at all weights (p?Digital home bathroom scales provide sufficiently accurate and consistent weights for public health research. Reminders to zero scales before each use may further improve accuracy of self-reported weight. PMID:24341761
U.S. Geological Survey
1993-01-01
A digital orthophoto is a digital image of an aerial photograph with displacements caused by the camera angle and the terrain removed. It, thus, combines the image characteristics of a photograph with the geometric qualities of a map.
Older people and digital disengagement: a fourth digital divide?
Olphert, Wendy; Damodaran, Leela
2013-01-01
Digital technologies are becoming more pervasive in all areas of society. Enabling everyone to have access and capability to use the Internet and associated digital technologies, summed up in the term 'digital inclusion', is seen to have wide-ranging benefits to the individual, to the economy and to society. For older people, being digitally included can help them to maintain their independence, social connectedness and sense of worth in the face of declining health or limited capabilities, as well as also offering new opportunities to improve their quality of life. At present however, access to the technology and to the benefits is not equally distributed either between or within nations, and older people tend to be on the 'wrong' side of what is termed the 'digital divide'. Governments globally are developing strategies to promote digital inclusion and indeed Internet uptake is increasing steadily, including amongst older people. However, such strategies have focussed on getting people online, and there appears to be an assumption that once someone is online they will remain 'digitally engaged'. In fact statistics show that some users give up using the Internet, and there is emerging evidence that older people are more vulnerable to the factors which can lead to this outcome. The authors see this phenomenon as a potential but largely unrecognised 'fourth digital divide' which has serious implications for social inclusion. The objectives of this article are (a) to raise awareness of the phenomenon of digital disengagement by considering some of the emerging evidence, (b) to explore some of the potential implications of not recognising and therefore not addressing the needs of the digitally disengaged older population, and (c) to reveal the prevailing gap in knowledge which future research should address. PMID:23969758
40 CFR 91.508 - Cumulative Sum (CumSum) procedure.
Code of Federal Regulations, 2010 CFR
2010-07-01
...Ci-1 + Xi ? (FEL + F))] Where: Ci = The current CumSum statistic Ci-1 = The previous CumSum statistic. Prior to any testing, the CumSum statistic = 0 (i.e. C0 = 0) Xi = The current emission test result for...
40 CFR 91.508 - Cumulative Sum (CumSum) procedure.
Code of Federal Regulations, 2014 CFR
2014-07-01
...Ci-1 + Xi ? (FEL + F))] Where: Ci = The current CumSum statistic Ci-1 = The previous CumSum statistic. Prior to any testing, the CumSum statistic = 0 (i.e. C0 = 0) Xi = The current emission test result for...
40 CFR 91.508 - Cumulative Sum (CumSum) procedure.
Code of Federal Regulations, 2013 CFR
2013-07-01
...Ci-1 + Xi ? (FEL + F))] Where: Ci = The current CumSum statistic Ci-1 = The previous CumSum statistic. Prior to any testing, the CumSum statistic = 0 (i.e. C0 = 0) Xi = The current emission test result for...
40 CFR 91.508 - Cumulative Sum (CumSum) procedure.
Code of Federal Regulations, 2011 CFR
2011-07-01
...Ci-1 + Xi ? (FEL + F))] Where: Ci = The current CumSum statistic Ci-1 = The previous CumSum statistic. Prior to any testing, the CumSum statistic = 0 (i.e. C0 = 0) Xi = The current emission test result for...
40 CFR 91.508 - Cumulative Sum (CumSum) procedure.
Code of Federal Regulations, 2012 CFR
2012-07-01
...Ci-1 + Xi ? (FEL + F))] Where: Ci = The current CumSum statistic Ci-1 = The previous CumSum statistic. Prior to any testing, the CumSum statistic = 0 (i.e. C0 = 0) Xi = The current emission test result for...
NASA Astrophysics Data System (ADS)
Gregory, Peter
2006-06-01
Digital photography was discovered by Sony in 1981. The technology struggled for many years, mainly because the electronics of the day were inadequate. Nowadays, digital photography is the mainstream photographic technology, having overtaken the mature silver halide technology. This paper describes the chemistry and technology of silver halide and digital photography. Particular emphasis is given to producing high-quality images by ink jet printing, the technology of choice to produce photographic prints from digital cameras.
Gauss sum factorization with cold atoms.
Gilowski, M; Wendrich, T; Müller, T; Jentsch, Ch; Ertmer, W; Rasel, E M; Schleich, W P
2008-01-25
We report the first implementation of a Gauss sum factorization algorithm by an internal state Ramsey interferometer using cold atoms. A sequence of appropriately designed light pulses interacts with an ensemble of cold rubidium atoms. The final population in the involved atomic levels determines a Gauss sum. With this technique we factor the number N=263193. PMID:18232946
QCD sum rule analysis of baryon masses
NASA Astrophysics Data System (ADS)
Liu, Xinyu
The masses of low-lying baryon states are calculated using the QCD sum rule method. Both octet and decuplet baryon states are studied via the conventional sum rule method and the new parity-projected sum rule method. Firstly, the low-lying N* channels of octets are studied via the conventional sum rule method. Using generalized interpolating fields, three independent sets of QCD sum rules are derived which allow the extraction of the spin 12+/- , and 32+/- states in both the non-strange and strange channels. Thereafter, we explored a new technique which exactly projects out the parities that are mixed in the conventional sum rules. One advantage of the new parity-project sum rules is to be able to study the origin of mass splittings between positive and negative-parity baryon pairs in a direct manner in relation to the chiral-symmetry breaking of QCD as manifested via the vacuum condensates. At last, we re-visited the spin 32+/- decuplet states in both the conventional and the parity-projected QCD sum rule methods. These states have not been well-studied in this context in the literature. The uncertainties of our mass predictions are explored by taking into account all the uncertainties in the QCD condensate parameters using a Monte-Carlo based method. The results represent a comprehensive and improved understanding of octet and decuplet baryons from the non-perturbative QCD perspective.
Sulkosky, Vincent
2004-08-30
The Gerasimov-Drell-Hearn (GDH) sum rule was originally derived for real photon absorption (corresponding to Q{sup 2}=0) and has been generalized to finite Q{sup 2}. The goals of Jefferson Lab experiment E97-110 are to perform a precise measurement of the generalized GDH integral and the moments of the neutron spin structure functions in order to study their Q{sup 2} dependence between 0.02 and 0.3 (GeV/c){sup 2}. This Q{sup 2} range will allow us to extrapolate to the real photon point for {sup 3}He and the neutron. Furthermore the low Q{sup 2} predictions of Chiral Perturbation Theory and its limits of applicability can be tested. The measurements will provide new constraints on understanding the {sup 3}He and neutron spin structure and contribute to the understanding of the nucleon resonances. The acquisition of data was completed in August of 2003 using the Jefferson Lab high polarization continuous-wave electron beam, the Hall A polarized {sup 3}He target, and the new Hall A septum magnet, which allows measurements at forward angles of 6 and 9 degrees. The status and prospects of the data analysis will be discussed.
NASA Astrophysics Data System (ADS)
Schatten, Kenneth
1984-04-01
Having for numerous reasons acquired a three digit kilogram mass, the author is experienced at the painful struggles that the gourmand must suffer to reduce weight, particularly if he/she enjoys reasonably large amounts of good food. To the avant-garde geophysicist, utilizing the following approach could be pleasurable, rewarding, and may even enable the accomplishment of what Ghengis Khan, Alexander the Great, Napolean, and Hitler could not!The basic approach is the full utilization of Newton's formula for the attraction of two massive bodies: F=GM1M2/r2, where G, is the gravitational constant; r, the distance between the two bodies; and M1 and M2, the masses of the two bodies. Although one usually chooses M1 to be the earth's mass ME and M2 to be the mass of a small object, this unnecessarily restricts the realm of phenomena. The less restrictive assumption is M1 + M2 = ME.
ERIC Educational Resources Information Center
Howell, Les
1996-01-01
Defines a digital photograph as a numerical record of light electronically measured and recorded by a computer's scanner. States that most personal computers cannot do digital photography successfully and that digital pictures can be hard to manage and present a storage problem. Finds that, once the school has the hardware/software, picture…
ERIC Educational Resources Information Center
Isman, Aytekin; Canan Gungoren, Ozlem
2014-01-01
Era in which we live is known and referred as digital age.In this age technology is rapidly changed and developed. In light of these technological advances in 21st century, schools have the responsibility of training "digital citizen" as well as a good citizen. Digital citizens must have extensive skills, knowledge, Internet and …
Gaussian sum filtering based on uniformly Random Design with application to terrain navigation
Yanhong Zhang; Dong Liu; Guangbin Liu; Fei Cao
2011-01-01
In this paper, densities are approximated as finite mixture models as is done in the Gaussian sum filter (GSF). A novel GSF (UGSF) for filtering nonlinear non-Gaussian dynamic system is proposed which updates the means and covariances of the mixands using uniformly Random Design(URD) method. To keep the number of the mixands constant, a method of weighted Expectation Maximization (WEM)
Weinberg sum rules at finite temperature
NASA Astrophysics Data System (ADS)
Ayala, Alejandro; Dominguez, C. A.; Loewe, M.; Zhang, Y.
2014-08-01
The saturation of the two Weinberg sum rules is studied at finite temperature, using recent independent QCD sum rule results for the thermal behavior of hadronic parameters in the vector and axial-vector channels. Both sum rules are very well satisfied from T=0 up to T /Tc?0.7-0.8. At higher temperatures close to Tc a hadronic, pion-loop contribution in the spacelike region proportional to T2, present at leading order in the vector but not in the axial-vector channel, induces an asymmetry leading to a small deviation. In this region, though, QCD sum rules for the hadronic parameters begin to have no solutions, as the hadronic widths of the ? and the a1 mesons diverge signaling deconfinement. Close to and at T =Tc there are no pions left in the medium and chiral symmetry is restored, so that the sum rules are trivially satisfied.
Exact sum rules for inhomogeneous strings
Amore, Paolo, E-mail: paolo.amore@gmail.com
2013-11-15
We derive explicit expressions for the sum rules of the eigenvalues of inhomogeneous strings with arbitrary density and with different boundary conditions. We show that the sum rule of order N may be obtained in terms of a diagrammatic expansion, with (N?1)!/2 independent diagrams. These sum rules are used to derive upper and lower bounds to the energy of the fundamental mode of an inhomogeneous string; we also show that it is possible to improve these approximations taking into account the asymptotic behavior of the spectrum and applying the Shanks transformation to the sequence of approximations obtained to the different orders. We discuss three applications of these results. -- Highlights: •We derive an explicit expression for the sum rules of an inhomogeneous string. •We obtain a diagrammatic representation for the sum rules of a given order. •We obtain precise bounds on the lowest eigenvalue of the string.
Weighted Pushdown Systems with Indexed Weight Domains
Minamide, Yasuhiko
Weighted Pushdown Systems with Indexed Weight Domains Yasuhiko Minamide Faculty of Engineering, Information and Systems University of Tsukuba Abstract. The reachability analysis of weighted pushdown systems of a weighted pushdown system is associated with an element of a bounded semiring representing the weight
Measuring food intake with digital photography.
Martin, C K; Nicklas, T; Gunturk, B; Correa, J B; Allen, H R; Champagne, C
2014-01-01
The digital photography of foods method accurately estimates the food intake of adults and children in cafeterias. When using this method, images of food selection and leftovers are quickly captured in the cafeteria. These images are later compared with images of 'standard' portions of food using computer software. The amount of food selected and discarded is estimated based upon this comparison, and the application automatically calculates energy and nutrient intake. In the present review, we describe this method, as well as a related method called the Remote Food Photography Method (RFPM), which relies on smartphones to estimate food intake in near real-time in free-living conditions. When using the RFPM, participants capture images of food selection and leftovers using a smartphone and these images are wirelessly transmitted in near real-time to a server for analysis. Because data are transferred and analysed in near real-time, the RFPM provides a platform for participants to quickly receive feedback about their food intake behaviour and to receive dietary recommendations for achieving weight loss and health promotion goals. The reliability and validity of measuring food intake with the RFPM in adults and children is also reviewed. In sum, the body of research reviewed demonstrates that digital imaging accurately estimates food intake in many environments and it has many advantages over other methods, including reduced participant burden, elimination of the need for participants to estimate portion size, and the incorporation of computer automation to improve the accuracy, efficiency and cost-effectiveness of the method. PMID:23848588
Non-Homogeneous Fractal Hierarchical Weighted Networks
Dong, Yujuan; Dai, Meifeng; Ye, Dandan
2015-01-01
A model of fractal hierarchical structures that share the property of non-homogeneous weighted networks is introduced. These networks can be completely and analytically characterized in terms of the involved parameters, i.e., the size of the original graph Nk and the non-homogeneous weight scaling factors r1, r2, · · · rM. We also study the average weighted shortest path (AWSP), the average degree and the average node strength, taking place on the non-homogeneous hierarchical weighted networks. Moreover the AWSP is scrupulously calculated. We show that the AWSP depends on the number of copies and the sum of all non-homogeneous weight scaling factors in the infinite network order limit. PMID:25849619
NASA Astrophysics Data System (ADS)
Brown, Benny; Hubler, Alfred
2009-03-01
We study hardware implementations of cellular automata as reliable, adjustable, and secure commication lines. We discuss energy efficient digital wires on a nano-scale, all-optical digital wires, and digital wires as power lines and present performance data of a prototype digital wire, a six cells wide and ten cells long Boolean network. We show that digital wires have the following advantages: (i) Fixed pulse shape (pulses have a rectangular shape with a constant height and a constant width and produce no echos); (ii) Robust against electric smog. Digital wires based on semiconductor technology are effectively inert against electro-magnetic radiation, except for low-frequency radiation (heat) and high frequency radiation (X-rays). Digital wires based on plasma technology have in addition a very high tolerance for heat and X-rays. In digital wire the pulse speed can be rapidly adjusted. Signals on digital wires can be encrypted. Some digital wires can be used as general purpose computers. The data and the code are the input of the wire. Then both travel along the wire and `collide'. The collision is the computation. The result travels to the end of the wire, for further processing, as parallel input by a CPU, an actuator, or another digital wire.
Digital Natives or Digital Tribes?
ERIC Educational Resources Information Center
Watson, Ian Robert
2013-01-01
This research builds upon the discourse surrounding digital natives. A literature review into the digital native phenomena was undertaken and found that researchers are beginning to identify the digital native as not one cohesive group but of individuals influenced by other factors. Primary research by means of questionnaire survey of technologies…
7 CFR 42.132 - Determining cumulative sum values.
Code of Federal Regulations, 2010 CFR
2010-01-01
...subgroup as follows: (1) Add the number of defects for the present subgroup to the CuSum value...CuSum value: (i) Reset the CuSum value to zero (0) if the CuSum value is less than zero (0). (ii) Reset the CuSum value to...
Weight structures, weight ltrations, weight spectral sequences, and weight complexes (for
Weight structures, weight #28;ltrations, weight spectral sequences, and weight complexes (for basic notion is the new de#28;nition of a weight structure for a triangulated C. We prove that a weight to cohomology zero". For Hw being the heart of the weight structure we de#28;ne a canonical conservative weakly
Exact sum rules for inhomogeneous drums
Amore, Paolo
2013-09-15
We derive general expressions for the sum rules of the eigenvalues of drums of arbitrary shape and arbitrary density, obeying different boundary conditions. The formulas that we present are a generalization of the analogous formulas for one dimensional inhomogeneous systems that we have obtained in a previous paper. We also discuss the extension of these formulas to higher dimensions. We show that in the special case of a density depending only on one variable the sum rules of any integer order can be expressed in terms of a single series. As an application of our result we derive exact sum rules for the homogeneous circular annulus with different boundary conditions, for a homogeneous circular sector and for a radially inhomogeneous circular annulus with Dirichlet boundary conditions. -- Highlights: •We derive an explicit expression for the sum rules of inhomogeneous drums. •We discuss the extension to higher dimensions. •We discuss the special case of an inhomogeneity only along one direction.
The generalized GDH sum for He-3
Karl Slifer
2004-06-02
The Burkhardt-Cottingham, Bjorken and generalized GDH sum rules are all consequences of the Q^2-dependent dispersion relations for the virtual photon Compton amplitudes. These integrals are investigated for a He-3 target at low Q^2.
Rounding sum-of-squares relaxations
Barak, Boaz
We present a general approach to rounding semidefinite programming relaxations obtained by the Sum-of-Squares method (Lasserre hierarchy). Our approach is based on using the connection between these relaxations and the ...
NASA Technical Reports Server (NTRS)
1986-01-01
Digital Imaging is the computer processed numerical representation of physical images. Enhancement of images results in easier interpretation. Quantitative digital image analysis by Perceptive Scientific Instruments, locates objects within an image and measures them to extract quantitative information. Applications are CAT scanners, radiography, microscopy in medicine as well as various industrial and manufacturing uses. The PSICOM 327 performs all digital image analysis functions. It is based on Jet Propulsion Laboratory technology, is accurate and cost efficient.
NSDL National Science Digital Library
Digital Women strives to be a full-service portal for working women in all varieties of business. The site offers a huge collection of resources, including informative articles, manuals, free software, Web tools, and advice, as well as ten free newsletters and mailing lists. Digital Women also provides a place for business women to network, including information about the Digital Women 2000 Annual International Net-Together, which will take place on Vancouver Island September 29-October 1, 2000.
Jian-Ping Chen
2009-12-01
Recent precision spin-structure data from Jefferson Lab have significantly advanced our knowledge of nucleon structure at low Q2. Results on the neutron spin sum rules and polarizabilities in the low to intermediate Q2 region are presented. The Burkhardt-Cuttingham Sum Rule was verified within experimental uncertainties. When comparing with theoretical calculations, results on spin polarizability show surprising disagreements with Chiral Perturbation Theory predictions. Preliminary results on first moments at very low Q2 are also presented.
WEIGHTED Lp -BOUNDEDNESS OF FOURIER SERIES
Pérez, Mario
Jacobi weight on the interval [-1, 1] and, for each function f, let Snf denote the n-th partial sum with respect to dµ. The study of the boundedness Snf Lp(updµ) C f Lp(vpdµ), (1) where u(x) = (1 - x)a (1 + x, . . . , N) (3) and A a, B b, Gi gi (4) hold, then C > 0 such that Snf Lp(updµ) C f Lp(vpdµ) f Lp (vp dµ
Della Giovampaola, Cristian; Engheta, Nader
2014-12-01
Balancing complexity and simplicity has played an important role in the development of many fields in science and engineering. One of the well-known and powerful examples of such balance can be found in Boolean algebra and its impact on the birth of digital electronics and the digital information age. The simplicity of using only two numbers, '0' and '1', in a binary system for describing an arbitrary quantity made the fields of digital electronics and digital signal processing powerful and ubiquitous. Here, inspired by the binary concept, we propose to develop the notion of digital metamaterials. Specifically, we investigate how one can synthesize an electromagnetic metamaterial with a desired permittivity, using as building blocks only two elemental materials, which we call 'metamaterial bits', with two distinct permittivity functions. We demonstrate, analytically and numerically, how proper spatial mixtures of such metamaterial bits lead to elemental 'metamaterial bytes' with effective material parameters that are different from the parameters of the metamaterial bits. We then apply this methodology to several design examples of optical elements, such as digital convex lenses, flat graded-index digital lenses, digital constructs for epsilon-near-zero (ENZ) supercoupling and digital hyperlenses, thus highlighting the power and simplicity of the methodology. PMID:25218061
NASA Astrophysics Data System (ADS)
Della Giovampaola, Cristian; Engheta, Nader
2014-12-01
Balancing complexity and simplicity has played an important role in the development of many fields in science and engineering. One of the well-known and powerful examples of such balance can be found in Boolean algebra and its impact on the birth of digital electronics and the digital information age. The simplicity of using only two numbers, ‘0’ and ‘1’, in a binary system for describing an arbitrary quantity made the fields of digital electronics and digital signal processing powerful and ubiquitous. Here, inspired by the binary concept, we propose to develop the notion of digital metamaterials. Specifically, we investigate how one can synthesize an electromagnetic metamaterial with a desired permittivity, using as building blocks only two elemental materials, which we call ‘metamaterial bits’, with two distinct permittivity functions. We demonstrate, analytically and numerically, how proper spatial mixtures of such metamaterial bits lead to elemental ‘metamaterial bytes’ with effective material parameters that are different from the parameters of the metamaterial bits. We then apply this methodology to several design examples of optical elements, such as digital convex lenses, flat graded-index digital lenses, digital constructs for epsilon-near-zero (ENZ) supercoupling and digital hyperlenses, thus highlighting the power and simplicity of the methodology.
Strength function sum rules and the generalized Brink-Axel hypothesis
Calvin W. Johnson
2015-06-23
Sum rules provide useful insights into transition strength functions and are often expressed as expectation values of an operator. In this letter I demonstrate that non-energy-weighted transition sum rules have strong secular dependences on the energy of the initial state. Such non-trivial systematics have consequences: the simplification suggested by the generalized Brink-Axel hypothesis, for example, does not hold for most cases. Furthermore, I show the systematics can be understood through spectral distribution theory, calculated via traces of operators and of products of operators.
Strength function sum rules and the generalized Brink-Axel hypothesis
Johnson, Calvin W
2015-01-01
Sum rules provide useful insights into transition strength functions and are often expressed as expectation values of an operator. In this letter I demonstrate that non-energy-weighted transition sum rules have strong secular dependences on the energy of the initial state. Such non-trivial systematics have consequences: the simplification suggested by the generalized Brink-Axel hypothesis, for example, does not hold for most cases. Furthermore, I show the systematics can be understood through spectral distribution theory, calculated via traces of operators and of products of operators.
Betweenness centrality in a weighted network.
Wang, Huijuan; Hernandez, Javier Martin; Van Mieghem, Piet
2008-04-01
When transport in networks follows the shortest paths, the union of all shortest path trees G union or logical sum SPT can be regarded as the "transport overlay network." Overlay networks such as peer-to-peer networks or virtual private networks can be considered as a subgraph of G union or logical sum SPT. The traffic through the network is examined by the betweenness Bl of links in the overlay G union or logical sum SPT. The strength of disorder can be controlled by, e.g., tuning the extreme value index alpha of the independent and identically distributed polynomial link weights. In the strong disorder limit (alpha-->0), all transport flows over a critical backbone, the minimum spanning tree (MST). We investigate the betweenness distributions of wide classes of trees, such as the MST of those well-known network models and of various real-world complex networks. All these trees with different degree distributions (e.g., uniform, exponential, or power law) are found to possess a power law betweenness distribution Pr[Bl=j] approximately j(-c). The exponent c seems to be positively correlated with the degree variance of the tree and to be insensitive of the size N of a network. In the weak disorder regime, transport in the network traverses many links. We show that a link with smaller link weight tends to carry more traffic. This negative correlation between link weight and betweenness depends on alpha and the structure of the underlying topology. PMID:18517688
Weight structures, weight oltrations, weight spectral sequences, and weight complexes (for
Weight structures, weight oltrations, weight spectral sequences, and weight complexes (for and func- tors. Our basic notion is the new deonition of a weight structure for a triangulated C_. We prove that a weight structure deones Postnikov towers of objects of C_; these towers
Weighted conditional least-squares estimation
Booth, J.G.
1987-01-01
A two-stage estimation procedure is proposed that generalizes the concept of conditional least squares. The method is instead based upon the minimization of a weighted sum of squares, where the weights are inverses of estimated conditional variance terms. Some general conditions are given under which the estimators are consistent and jointly asymptotically normal. More specific details are given for ergodic Markov processes with stationary transition probabilities. A comparison is made with the ordinary conditional least-squares estimators for two simple branching processes with immigration. The relationship between weighted conditional least squares and other, more well-known, estimators is also investigated. In particular, it is shown that in many cases estimated generalized least-squares estimators can be obtained using the weighted conditional least-squares approach. Applications to stochastic compartmental models, and linear models with nested error structures are considered.
Digital demodulator-correlator
NASA Technical Reports Server (NTRS)
Layland, J. W.; Martin, W. L.; Zygielbaum, A. I.; Goldstein, R. M.; Hubbard, W. P. (inventors)
1978-01-01
An apparatus for demodulation and correlation of a code modulated 10 MHz signal is presented. The apparatus is comprised of a sample and hold analog-to-digital converter synchronized by a frequency coherent 40 MHz pulse to obtain four evenly spaced samples of each of the signal. Each sample is added or subtracted to or from one of four accumulators to or from the separate sums. The correlation functions are then computed. As a further feature of the invention, multipliers are each multiplied by a squarewave chopper signal having a period that is long relative to the period of the received signal to foreclose contamination of the received signal by leakage from either of the other two terms of the multipliers.
ERIC Educational Resources Information Center
Horn, Michael B.
2013-01-01
State policy is crucial to the spread of digital-learning opportunities at the elementary and secondary level. A review of recent legislative action reveals policies that are constantly in flux and differ quite markedly from one state to another. Some have hoped for model digital-learning legislation that could handle all the various issues…
NASA Technical Reports Server (NTRS)
Rios, Joseph
2012-01-01
Presenting the current status of the Digital TMI project to visiting members of the FAA Command Center. Digital TMI is an effort to store national-level traffic management initiatives in a standards-compliant manner. Work is funded by the FAA.
ERIC Educational Resources Information Center
Conway, Paul
1994-01-01
Discussion of digital imaging technology focuses on its potential use for preservation of library materials. Topics addressed include converting microfilm to digital; the high cost of conversion from paper or microfilm; quality; indexing; database management issues; incompatibility among imaging systems; longevity; cooperative pilot projects; and…
ERIC Educational Resources Information Center
Blansett, Jim
2008-01-01
In recent years, the Internet has become a digital commons of commerce and education. However, accessibility standards have often been overlooked online, and the digital equivalents to curb-cuts and other physical accommodations have only rarely been implemented to serve those with print disabilities. (A print disability can be a learning…
Weight trimming and propensity score weighting.
Lee, Brian K; Lessler, Justin; Stuart, Elizabeth A
2011-01-01
Propensity score weighting is sensitive to model misspecification and outlying weights that can unduly influence results. The authors investigated whether trimming large weights downward can improve the performance of propensity score weighting and whether the benefits of trimming differ by propensity score estimation method. In a simulation study, the authors examined the performance of weight trimming following logistic regression, classification and regression trees (CART), boosted CART, and random forests to estimate propensity score weights. Results indicate that although misspecified logistic regression propensity score models yield increased bias and standard errors, weight trimming following logistic regression can improve the accuracy and precision of final parameter estimates. In contrast, weight trimming did not improve the performance of boosted CART and random forests. The performance of boosted CART and random forests without weight trimming was similar to the best performance obtainable by weight trimmed logistic regression estimated propensity scores. While trimming may be used to optimize propensity score weights estimated using logistic regression, the optimal level of trimming is difficult to determine. These results indicate that although trimming can improve inferences in some settings, in order to consistently improve the performance of propensity score weighting, analysts should focus on the procedures leading to the generation of weights (i.e., proper specification of the propensity score model) rather than relying on ad-hoc methods such as weight trimming. PMID:21483818
Scaling of average receiving time and average weighted shortest path on weighted Koch networks
NASA Astrophysics Data System (ADS)
Dai, Meifeng; Chen, Dandan; Dong, Yujuan; Liu, Jie
2012-12-01
In this paper we present weighted Koch networks based on classic Koch networks. A new method is used to determine the average receiving time (ART), whose key step is to write the sum of mean first-passage times (MFPTs) for all nodes to absorption at the trap located at a hub node as a recursive relation. We show that the ART exhibits a sublinear or linear dependence on network order. Thus, the weighted Koch networks are more efficient than classic Koch networks in receiving information. Moreover, average weighted shortest path (AWSP) is calculated. In the infinite network order limit, the AWSP depends on the scaling factor. The weighted Koch network grows unbounded but with the logarithm of the network size, while the weighted shortest paths stay bounded.
Automated paste weight measurement and control
Ostrander, P.
1986-08-01
New research on paste weight control is discussed. The pasting research data was collected by both the traditional method of manually collecting samples and by continuous sensor measurement and automatic data collection. The equipment used for automatic data collection is described. The paste weight gauge measures the active material. The data are collected and stored in the operator station and printed at the printer. The digital displays show the past weight on each side of the panel. This configuration allows the pasting process to be studied in depth and at a level of detail not possible before.
Weighted principal component analysis: a weighted covariance eigendecomposition approach
NASA Astrophysics Data System (ADS)
Delchambre, L.
2015-02-01
We present a new straightforward principal component analysis (PCA) method based on the diagonalization of the weighted variance-covariance matrix through two spectral decomposition methods: power iteration and Rayleigh quotient iteration. This method allows one to retrieve a given number of orthogonal principal components amongst the most meaningful ones for the case of problems with weighted and/or missing data. Principal coefficients are then retrieved by fitting principal components to the data while providing the final decomposition. Tests performed on real and simulated cases show that our method is optimal in the identification of the most significant patterns within data sets. We illustrate the usefulness of this method by assessing its quality on the extrapolation of Sloan Digital Sky Survey quasar spectra from measured wavelengths to shorter and longer wavelengths. Our new algorithm also benefits from a fast and flexible implementation.
Randomly stopped sums: models and psychological applications
Smithson, Michael; Shou, Yiyun
2014-01-01
This paper describes an approach to modeling the sums of a continuous random variable over a number of measurement occasions when the number of occasions also is a random variable. A typical example is summing the amounts of time spent attending to pieces of information in an information search task leading to a decision to obtain the total time taken to decide. Although there is a large literature on randomly stopped sums in financial statistics, it is largely absent from psychology. The paper begins with the standard modeling approaches used in financial statistics, and then extends them in two ways. First, the randomly stopped sums are modeled as “life distributions” such as the gamma or log-normal distribution. A simulation study investigates Type I error rate accuracy and power for gamma and log-normal versions of this model. Second, a Bayesian hierarchical approach is used for constructing an appropriate general linear model of the sums. Model diagnostics are discussed, and three illustrations are presented from real datasets. PMID:25426090
Coincidence summing in gamma-ray spectroscopy
Semkow, T.M.; Mehmood, G.; Parekh, P.P.
1993-10-01
With a proliferation of highly efficient Ge detector the effect of coincidence summing deserves a new approach. The coincidence summing of {gamma} radiation occurs when two or more {gamma} rays are emitted in coincidence from the decay of the same nucleus, and are recorded as one pulse within the resolving time of a Ge detector. We present a new technique developed to calculate coincidence-summing corrections. The general coincidence-summing equations are derived in matrix notation, which allows extracting either the lst-order correction (combinations of only two coincident {gamma} rays) or a full correction (all possible combinations of emitted {gamma} rays). It is shown how the technique can be applied to the determination of source disintegration rate, {gamma}-ray emission rates (alternatively in-beam reaction rates), or peak efficiencies in the presence of coincidence summing. Our technique has been applied to the determination of peak efficiencies of a Ge detector. The above calculation showed that, in general, the full correction is necessary for complicated decay schemes such as that from {sup 154}Eu.
Supersymmetric Yukawa sum rule and LHC tests
Blanke, Monika; Curtin, David; Perelstein, Maxim
2010-08-01
We propose the ''supersymmetric (SUSY) Yukawa sum rule,'' a relationship between physical masses and mixing angles of the third-generation quarks and squarks. The sum rule follows directly from a relation between quark and squark couplings to the Higgs, enforced by SUSY. It is exactly this relation that ensures the cancellation of the one-loop quadratic divergence in the Higgs mass from the top sector. Testing the sum rule experimentally would thus provide a powerful consistency check on SUSY as the solution to the gauge hierarchy problem. While such a test will most likely have to await a future next-generation lepton collider, the LHC experiments may be able to make significant progress towards this goal. If some of the terms entering the sum rule are measured at the LHC, the sum rule can be used (within SUSY framework) to put interesting constraints on the other terms, such as the mixing angles among third-generation squarks. We outline how the required mass measurements could be performed, and estimate the accuracy that can be achieved at the LHC.
A 3-Bit Current Mode Quantizer for Continuous Time Delta Sigma Analog-to-Digital Converters
Sundar, Arun
2012-02-14
The summing amplifier and the quantizer form two of the most critical blocks in a continuous time delta sigma (CT ??) analog-to-digital converter (ADC). Most of the conventional CT ?? ADC designs incorporate a voltage summing amplifier and a voltage...
MONOIDS OF MODULES AND ARITHMETIC OF DIRECT-SUM DECOMPOSITIONS
Geroldinger, Alfred
MONOIDS OF MODULES AND ARITHMETIC OF DIRECT-SUM DECOMPOSITIONS NICHOLAS R. BAETH AND ALFRED by the direct sum. This semigroup encodes all possible information about direct sum decompositions of modules treatment to study the direct-sum decompositions of modules using methods from Factorization Theory of Krull
BEHAVIOUR OF FUNCTION FIELD GAUSS SUMS AT INFINITY
Thakur, Dinesh S.
-order Gauss sums, giving results in the direction of Gauss' sign theorem and the work of Cassels and Matthews]. Next we consider the question of the sign of Gauss sums and establish (Theorem 2.5) an analogue of Gauss' theorem on the sign of quadratic Gauss sums. Then we consider signs of mth-order Gauss sums
Least square regularized regression in sum space.
Xu, Yong-Li; Chen, Di-Rong; Li, Han-Xiong; Liu, Lu
2013-04-01
This paper proposes a least square regularized regression algorithm in sum space of reproducing kernel Hilbert spaces (RKHSs) for nonflat function approximation, and obtains the solution of the algorithm by solving a system of linear equations. This algorithm can approximate the low- and high-frequency component of the target function with large and small scale kernels, respectively. The convergence and learning rate are analyzed. We measure the complexity of the sum space by its covering number and demonstrate that the covering number can be bounded by the product of the covering numbers of basic RKHSs. For sum space of RKHSs with Gaussian kernels, by choosing appropriate parameters, we tradeoff the sample error and regularization error, and obtain a polynomial learning rate, which is better than that in any single RKHS. The utility of this method is illustrated with two simulated data sets and five real-life databases. PMID:24808383
NSDL National Science Digital Library
Van Zeghbroeck, Bart Jozef
This is a Quicktime animation of a Digital Light Projector. A digital light projector provides the capability to display a video or computer monitor signal on a projection screen. Such a projector stands out by its small size, low weight and rather unique use of MEMS. The internal light path starts with a bright halogen source, which is guided through the color wheel, reflects off the MEMS chip and is projected through the projector lens. A close-up of the color wheel and MEMS chip reveals the internal lens and beamsplitter. The micromirror chip is mounted in a package with a transparent window onto the printed circuit board. An even closer view shows the active element: a large array of little mirrors. Millions of these mirrors, each smaller than 20 micron, are packed onto the micromirror chip.
NASA Astrophysics Data System (ADS)
Isailovic, Jordan
1983-08-01
Digital technology is having a profound influence on many aspects of human activity. It certainly has affected all areas of television broadcasting. A monitor is probably the least affected by digital technology. In the present experimental coder/decoder units for either RGB or standard (NTSC, PAL or SECAM) signals, the monitor receives an analog signal, even in an all digital studio. The same is true for computer graphics and game systems. But, it is logical to expect technological changes in broadcast and computer monitor applications.
Mining Weighted Association Rules without Preassigned Weights
Bai, Fengshan
Mining Weighted Association Rules without Preassigned Weights Ke Sun and Fengshan Bai Abstract--Association rule mining is a key issue in data mining. However, the classical models ignore the difference between the transactions, and the weighted association rule mining does not work on databases with only binary attributes
Pregnancy Weight Gain Calculator
... page.preprocess.inc ). Print Share Pregnancy Weight Gain Calculator Pregnancy Weight Gain Calculator Pregnancy Weight Gain Intro You should gain weight ... more from each food group. Pregnancy Weight Gain Calculator SuperTracker What's Cooking? Daily Food Plans BMI Calculator ...
Clayton, Dale H.
live egg indices and mean monthly gonadal weights (in mg/100g of body weight) was taken weight (in mg/100g body weight. Hence, path coefficient analysis was employed to obtain a clearer picture Testis weight M. eurysternus Brueelia sp. S. bannoo 0 10 20 30 40 50 60 70 80 90 May Jun Jul Aug Sep Oct
Digital Preservation for Digital Repositories
Southampton, University of
Science > Big Science "The sum of the smaller parts adds up to a greater number than that of the bigger EPrints has mainly been focused on encouraging acquisition of Data. ·How do we create our Global of Open Access Repositories (ROAR) http://roar.EPrints.org #12;: Management ·Open source (GNU license
Spikol, Daniel
1992-01-01
Digital Diorama may be briefly presented as: a historical exploration of the vision devices, performances, and installations of the nineteenth century, and their influences on the project. These histories of the magic ...
... weight. That’s because metabolism (how you burn the calories you eat) can slow down with age. The ... eat and drink. ? To lose weight, burn more calories than you eat and drink. ? To gain weight, ...
Weight loss surgery helps people with extreme obesity to lose weight. It may be an option if you cannot ... caused by obesity. There are different types of weight loss surgery. They often limit the amount of food you ...
... to change. Continue Changing Old Habits Can Be Hard Trimming down to a healthier weight involves making ... to manage your weight, but it can be hard to actually do it. Weight-management experts can ...
Hidden Markov Models: Maxing and Summing
Smith, David A.
Hidden Markov Models: Maxing and Summing Introduction to Natural Language Processing Computer Science 585--Fall 2009 University of Massachusetts Amherst David Smith 1 #12;Markov vs. Hidden Markov Models Fed raises interest rates 2 #12;Markov vs. Hidden Markov Models Fed raises interest rates NN NNS
On the sum of generalized Fibonacci sequence
NASA Astrophysics Data System (ADS)
Chong, Chin-Yoon; Ho, C. K.
2014-06-01
We consider the generalized Fibonacci sequence {Un defined by U0 = 0, U1 = 1, and Un+2 = pUn+1+qUn for all n?Z0+ and p, q?Z+. In this paper, we derived various sums of the generalized Fibonacci sequence from their recursive relations.
An Octonionic Geometric (Balanced) state Sum Model
Louis Crane
1998-06-12
We propose a new 4D state sum model, related to the balanced model, which is constructed using the octonions, or equivalently, triality. An effective continuum physical theory constructed from this model coupled to the balanced model would have a non-vanishing cosmological constant, chiral asymmetry, and a gauge group related to the octonions.
Direct Sum Decompositions and Indecomposable TQFT's
Stephen Sawin
1995-05-23
The decomposition of an arbitrary axiomatic topological quantum field theory or TQFT into indecomposable theories is given. In particular, unitary TQFT's in arbitrary dimensions are shown to decompose into a sum of theories in which the Hilbert space of the sphere is one-dimensional, and indecomposable two-dimensional theories are classified.
Obliged Sums of Games Thomas S. Ferguson
Ferguson, Thomas S.
Obliged Sums of Games Thomas S. Ferguson Mathematics Department, UCLA 1. Introduction. Let g be an impartial combinatorial game. In such a game, there are two players, I and II, there is an initial position is determined by the rules of the game and is independent of the player whose turn it is to move. The game ends
Learning with Positive and Unlabeled Examples Using Weighted Logistic Regression
Illinois at Chicago, University of
of observed false positive and false negative error frequencies. Since the target function has zero actual error, minimizing the sum of observed false positive and false negative frequencies will give a good ap positive and false negative error frequencies can be shown to be equivalent to minimizing expected weighted
A method to compute periodic sums
NASA Astrophysics Data System (ADS)
Gumerov, Nail A.; Duraiswami, Ramani
2014-09-01
In a number of problems in computational physics, a finite sum of kernel functions centered at N particle locations located in a box in three dimensions must be extended by imposing periodic boundary conditions on box boundaries. Even though the finite sum can be efficiently computed via fast summation algorithms, such as the fast multipole method (FMM), the periodized extension is usually treated via a different algorithm, Ewald summation, accelerated via the fast Fourier transform (FFT). A different approach to compute this periodized sum just using a blackbox finite fast summation algorithm is presented in this paper. The method splits the periodized sum into two parts. The first, comprising the contribution of all points outside a large sphere enclosing the box, and some of its neighbors, is approximated inside the box by a collection of kernel functions (“sources”) placed on the surface of the sphere or using an expansion in terms of spectrally convergent local basis functions. The second part, comprising the part inside the sphere, and including the box and its immediate neighborhood, is treated via available summation algorithms. The coefficients of the sources are determined by least squares collocation of the periodicity condition of the total potential, imposed on a circumspherical surface for the box. While the method is presented in general, details are worked out for the case of evaluating electrostatic potentials and forces. Results show that when used with the FMM, the periodized sum can be computed to any specified accuracy, at an additional cost of the order of the free-space FMM. Several technical details and efficient algorithms for auxiliary computations are provided, as are numerical comparisons.
Go Digital: Your Digital World
NSDL National Science Digital Library
Go Digital is a "weekly BBC World Service programme that looks at how technology is changing our lives." Broadband users can watch video Webcasts of nearly two years worth of past programs, while audio is available to dialup users. Each episode lasts approximately 25 minutes, and features two or three key technology stories. Previous topics discussed on Go Digital include virtual reality applications for disabled children, journalistic Web logging, and computer security.
Body Weight Relationships in Early Marriage: Weight Relevance, Weight Comparisons, and Weight Talk
Bove, Caron F.; Sobal, Jeffery
2011-01-01
This investigation uncovered processes underlying the dynamics of body weight and body image among individuals involved in nascent heterosexual marital relationships in Upstate New York. In-depth, semi-structured qualitative interviews conducted with 34 informants, 20 women and 14 men, just prior to marriage and again one year later were used to explore continuity and change in cognitive, affective, and behavioral factors relating to body weight and body image at the time of marriage, an important transition in the life course. Three major conceptual themes operated in the process of developing and enacting informants’ body weight relationships with their partner: weight relevance, weight comparisons, and weight talk. Weight relevance encompassed the changing significance of weight during early marriage and included attracting and capturing a mate, relaxing about weight, living healthily, and concentrating on weight. Weight comparisons between partners involved weight relativism, weight competition, weight envy, and weight role models. Weight talk employed pragmatic talk, active and passive reassurance, and complaining and critiquing criticism. Concepts emerging from this investigation may be useful in designing future studies of and approaches to managing body weight in adulthood. PMID:21864601
Graham, Bruce
Keywords: synaptic plasticity; pyramidal cell; compartmental model; calcium; hippocampus Abstract We use a computational model of a hippocampal CA1 pyramidal cell to demonstrate that spine head calcium activity impinging on the cell. The form of the readout is equivalent to the functions of weighted, summed
YOSHIO SANO
We introduce a generalization of competition graphs, called weighted competi- tion graphs. The weighted competition graph of a digraph D = (V, A), denoted by Cw(D), is an edge-weighted graph (G, w) such that G = (V, E) is the competition graph of D, and the weight w(e) of an edge e = xy ? E is the number of
ERIC Educational Resources Information Center
Ryan, Kevin Michael
2011-01-01
Research on syllable weight in generative phonology has focused almost exclusively on systems in which weight is treated as an ordinal hierarchy of clearly delineated categories (e.g. light and heavy). As I discuss, canonical weight-sensitive phenomena in phonology, including quantitative meter and quantity-sensitive stress, can also treat weight…
Weighted distributed hash tables
Christian Schindelhauer; Gunnar Schomaker
2005-01-01
We present two methods for weighted consistent hashing also known as weighted distributed hash tables. The first method, called Linear Method, combines the standard consistent hasing introduced by Karger et al. [9] with a linear weighted distance measure. By using node copies and different partitions of the hash space, the balance of this scheme approximates the fair weight relationship with
Summing NaI(Tl) detector (SuN) for radioactive beam experiments relevant for the p-process
NASA Astrophysics Data System (ADS)
Simon, Anna; Beskin, Ilya; Liddick, Sean; Padmanabhan, Karthik; Peace, Jessica; Quinn, Stephen; Spyrou, Artemis; Stefanek, Benjamin
2011-10-01
P-process refers to (?,p), (?, ?) and (?,n) reactions producing nuclei on the neutron-deficient side of the valley of stability that cannot be reached by s- and r-processes. This process can be investigated via inversed reactions, i.e. proton or alpha capture with gamma emission. Gamma spectra resulting from capture reactions, may be complicated in structure and as such difficult to analyze. However, this difficulty may be omitted by implementing a summing technique, for which all gamma rays emitted during the decay cascade are summed into one peak, so called ``sum peak.'' Thus, in ideal case, the resulting spectrum will comprise of one peak of the energy E = Ecm+Q. This technique has already been successfully tested during stable beam experiments. In order to apply this technique to radioactive beam experiments a new Summing NaI(Tl) (SuN) detector was designed at NSCL. It is a 16x16 inch cylindrical barrel divided into eight optically separated segments, each of them read by three photomultipliers. Each of the PMTs is read independently by a digital data acquisition system (DDAS) and the final sum spectrum is obtained by software summing of the individual spectra. Here, first results obtained with the SuN detector as well as its possible future applications will be presented.
Newberg, Lee A.; McCue, Lee Ann; Lawrence, Charles E.
2006-01-01
Approaches based upon sequence weights, to construct a position weight matrix of nucleotides from aligned inputs, are popular but little effort has been expended to measure their quality. We derive optimal sequence weights that minimize the sum of the variances of the estimators of base frequency parameters for sequences related by a phylogenetic tree. Using these we find that approaches based upon sequence weights can perform very poorly in comparison to approaches based upon a theoretically optimal maximum-likelihood method in the inference of the parameters of a position-weight matrix. Specifically, we find that among a collection of primate sequences, even an optimal sequences-weights approach is only 51% as efficient as the maximum-likelihood approach in inferences of base frequency parameters. We also show how to employ the variance estimators to obtain a greedy ordering of species for sequencing. Application of this ordering for the weighted estimators to a primate collection yields a curve with a long plateau that is not observed with maximum-likelihood estimators. This plateau indicates that the use of weighted estimators on these data seriously limits the utility of obtaining the sequences of more than two or three additional species. PMID:16646830
NSDL National Science Digital Library
The homepage of the Maryland Digital Cultural Heritage website is quite inviting, as it combines images of the commonwealthâ??s distinctive flag with historic images of racing horses, a reference to one of the regionâ??s most well-known pastimes. Drawing on archival collections from such local institutions as the Montgomery County Historical Society, the Enoch Pratt Free Library, along with many others, there are over a dozen fine digital collections here for the curious and historically minded. These well-thought out collections include personal letters and images from the Edgar Allen Poe collection, a clutch of digitized items (including letters and photographs) from the acerbic writer H.L. Mencken, and items from the life of that most feared lefty, pitcher Lefty Grove. Finally, visitors also have the option of searching all of these collections by using a user-friendly search option that resides in the upper-right hand corner of each screen.
Multispecies weighted Hurwitz numbers
Harnad, J
2015-01-01
The construction of hypergeometric 2D Toda $\\tau$-functions as generating functions for weighted Hurwitz numbers is extended to multispecies families. Both the enumerative geometrical significance of multispecies weighted Hurwitz numbers as weighted enumerations of branched coverings of the Riemann sphere and their combinatorial significance in terms of weighted paths in the Cayley graph of $S_n$ are derived. The particular case of multispecies quantum weighted Hurwitz numbers is studied in detail.
NASA Technical Reports Server (NTRS)
1986-01-01
System One, a digital radiography system, incorporates a reusable image medium (RIM) which retains an image. No film is needed; the RIM is read with a laser scanner, and the information is used to produce a digital image on an image processor. The image is stored on an optical disc. System allows the radiologist to "dial away" unwanted images to compare views on three screens. It is compatible with existing equipment and cost efficient. It was commercialized by a Stanford researcher from energy selective technology developed under a NASA grant.
Cable, Louella E.
1967-01-01
The large number of measurements needed to describe fully the characteristics of biological specimens and other objects has always been tedious and time consuming. The work can be done much more rapidly and with greater accuracy with a digital caliper recently developed by us. The digital caliper is a new electronic instrument built to measure objects precisely throughout the range of 0.1 mm to 1.0 m. Calipers of several different discrete sizes make it possible to select the most convenient unit for the particular range of length and degree of accuracy desired.
NSDL National Science Digital Library
The Digital Theater is a truly unique concept, working with Britain's leading theatre companies "to capture live performance authentically onscreen." From their homepage, visitors can Browse Productions, find out How to Watch, and read about Theatre Partners. A nice way to get started is by clicking on one (or more) of the Digital Theatre Originals, which include Much Ado About Nothing and Into the Woods. Additionally, visitors can make their way through offerings from the Royal Opera House or Shakespeare's Globe Theatre. Listings of Classic Plays, such as Far from the Maddening Crowd, can also be viewed here and purchased for a small fee.
PREVENTING WEIGHT REGAIN AFTER WEIGHT LOSS
Technology Transfer Automated Retrieval System (TEKTRAN)
For most dieters, a regaining of lost weight is an all too common experience. Indeed, virtually all interventions for weight loss show limited or even poor long-term effectiveness. This sobering reality was reflected in a comprehensive review of nonsurgical treatments of obesity conducted by the Ins...
Nonperturbative black hole entropy and Kloosterman sums
NASA Astrophysics Data System (ADS)
Dabholkar, Atish; Gomes, João; Murthy, Sameer
2015-03-01
Non-perturbative quantum corrections to supersymmetric black hole entropy often involve nontrivial number-theoretic phases called Kloosterman sums. We show how these sums can be obtained naturally from the functional integral of supergravity in asymptotically AdS 2 space for a class of black holes. They are essentially topological in origin and correspond to charge-dependent phases arising from the various gauge and gravitational Chern-Simons terms and boundary Wilson lines evaluated on Dehn-filled solid 2-torus. These corrections are essential to obtain an integer from supergravity in agreement with the quantum degeneracies, and reveal an intriguing connection between topology, number theory, and quantum gravity. We give an assessment of the current understanding of quantum entropy of black holes.
Nonperturbative black hole entropy and Kloosterman sums
Atish Dabholkar; Joao Gomes; Sameer Murthy
2015-04-14
Non-perturbative quantum corrections to supersymmetric black hole entropy often involve nontrivial number-theoretic phases called Kloosterman sums. We show how these sums can be obtained naturally from the functional integral of supergravity in asymptotically AdS_2 space for a class of black holes. They are essentially topological in origin and correspond to charge-dependent phases arising from the various gauge and gravitational Chern-Simons terms and boundary Wilson lines evaluated on Dehn-filled solid 2-torus. These corrections are essential to obtain an integer from supergravity in agreement with the quantum degeneracies, and reveal an intriguing connection between topology, number theory, and quantum gravity. We give an assessment of the current understanding of quantum entropy of black holes.
Second harmonic generation and sum frequency generation
Pellin, M.J.; Biwer, B.M.; Schauer, M.W.; Frye, J.M.; Gruen, D.M.
1990-01-01
Second harmonic generation and sum frequency generation are increasingly being used as in situ surface probes. These techniques are coherent and inherently surface sensitive by the nature of the mediums response to intense laser light. Here we will review these two techniques using aqueous corrosion as an example problem. Aqueous corrosion of technologically important materials such as Fe, Ni and Cr proceeds from a reduced metal surface with layer by layer growth of oxide films mitigated by compositional changes in the chemical makeup of the growing film. Passivation of the metal surface is achieved after growth of only a few tens of atomic layers of metal oxide. Surface Second Harmonic Generation and a related nonlinear laser technique, Sum Frequency Generation have demonstrated an ability to probe the surface composition of growing films even in the presence of aqueous solutions. 96 refs., 4 figs.
A More Sensitive Lorentzian State Sum
Louis Crane; David Yetter
2003-01-06
We give the construction modulo normalization of a new state sum model for lorentzian quantum general relativity, using the construction of Dirac's expansors to include quantum operators corresponding to edge lengths as well as the quantum bivectors of the Barrett-Crane model, and discuss the problem of its normalization. The new model gives rise to a new picture of quantum geometry in which lengths come in a discrete spectrum, while areas have a continuum of values.
Are the pentaquark sum rules reliable?
NASA Astrophysics Data System (ADS)
Matheus, Ricardo D.; Narison, Stephan
2006-02-01
We rewiew and scrutinize the existing mass determinations of the pentaquarks from the exponential Laplace Sum Rules (LSR). We do not find any sum rule window for extracting optimal and reliable results from the LSR, due to the unusual slow convergence of the OPE and to the exceptional important role of the QCD continuum into the spectral function in this channel. Instead, we use in this channel, for the first time, Finite Energy Sum Rules (FESR), which exhibit a nice stability in the QCD continuum threshold tc, at which one can extract, with a good accuracy, the mass of the lowest resonance. Including the D = 7, 9 condensate contributions in the OPE, we obtain M? = (1513 ± 114) MeV, and the corresponding residue ? ?2 ˜ -(0.14 ˜ 0.49) × 10 -9 GeV 12, which favours the I = 0, J = ½, and negative parity S-wave interpretation of the ?(1540). However, our analysis indicates a degeneracy between the unmixed I = 0 and I = 1 S-wave states. In the I = 0, J = ½, P-wave channel, we obtain, for the P-resonance, Mp ˜ (1.99 ± 0.19) GeV and ? P ?-(0.7 ˜ 7.1) × 10 -9 GeV 14, which we expect to be discovered experimentally. Our results also suggest that some intuitive choices of the continuum threshold used in the LSR literature are inconsistent with the FESR results. Finally, a study of the ?- K-N coupling using a vertex sum rule shows that, for the I = 0, S-wave channel, the leading OPE contributions only start to order ? s2; in the chiral limit ms = 0, indicating that the ? is very narrow.
Sums of Random Partitions of Ranks
John W. Tukey
1957-01-01
Suppose that the integers $1, 2, \\\\cdots, N$ are randomly distributed among $k$ distinguishable classes with equal probability and without restrictions. It is natural to denote the class sums by $s_1, s_2, \\\\cdots, s_k$ and largest of these by $S$. A generating function is obtained for the upper half of the range of $S$, namely $\\\\frac{1}{4}N(N - 1) \\\\leqq S
Digital Wireless Communication
Heath Jr., - Robert W.
Digital Wireless Communication: Physical Layer Exploitation Wireless Networking and Communications Signals and Systems Digital Signal Processing Analog Communication Digital Communication Intro to Wireless;Why at the Graduate Level? It involves many different areas of expertise Digital communication
Trapping on Weighted Tetrahedron Koch Networks with Small-World Property
NASA Astrophysics Data System (ADS)
Dai, Meifeng; Xie, Qi; Xi, Lifeng
2013-04-01
In this paper, we present weighted tetrahedron Koch networks depending on a weight factor. According to their self-similar construction, we obtain the analytical expressions of the weighted clustering coefficient and average weighted shortest path (AWSP). The obtained solutions show that the weighted tetrahedron Koch networks exhibits small-world property. Then, we calculate the average receiving time (ART) on weighted-dependent walks, which is the sum of mean first-passage times (MFPTs) for all nodes absorpt at the trap located at a hub node. We find that the ART exhibits a sublinear or linear dependence on network order.
Weak convergence of random sums under nonrandom centering
Kruglov, V.M. [Moscow State Univ. (Russian Federation)
1995-08-25
Necessary and sufficient conditions are obtained for the weak convergence of nonrandomly centered and normalized random sums of independent identically distributed random variables. Limit distributions for these sums are described.
Classification image weights and internal noise level estimation
NASA Technical Reports Server (NTRS)
Ahumada, Albert J Jr
2002-01-01
For the linear discrimination of two stimuli in white Gaussian noise in the presence of internal noise, a method is described for estimating linear classification weights from the sum of noise images segregated by stimulus and response. The recommended method for combining the two response images for the same stimulus is to difference the average images. Weights are derived for combining images over stimuli and observers. Methods for estimating the level of internal noise are described with emphasis on the case of repeated presentations of the same noise sample. Simple tests for particular hypotheses about the weights are shown based on observer agreement with a noiseless version of the hypothesis.
Conventional mammography uses X-rays to look for tumors or suspicious areas in the breasts. Digital mammography also uses X-rays, but the data is collected on computer instead of on a piece of film. This means that the image can be computer-enhanced,
James F. Bredt
2000-01-01
The applications for Rapid Prototyping have broadened to the point where the name no longer fits the industry. The name Digital Manufacturing is proposed for the creation of solid articles from computer data without part-specific tooling and minimal geometric restrictions. The current state of the industry is reviewed and applications are classified by material strength and process accuracy. Today designers
NSDL National Science Digital Library
2012-08-31
What's a digital story? The folks at the Digital Storytelling initiative at The Ohio State University define it thusly: "a short (3-5 minute) movie which uses images, voice, and music to tell a story." The initiative is a great idea and this website offers visitors the chance to get acquainted with the digital stories that are being created at the school. Visitors should start their journey here by navigating over to the Stories area. Here they will find examples of these narratives, including "Howling at the Moon," "Clover Angst," "Our Sacred Circles," and "What's This Say?" Moving on, the Resources area includes information for those who would like to create their own digital stories. The links here lead to copyright-free audio and video sources, along with low-cost or free images. Also, this section includes helpful handouts that are used in the storytelling workshops at the OSU campus. No doubt this website will be a source of motivation and inspiration for those people who might like to create their own narratives.
ERIC Educational Resources Information Center
Frederiksen, Linda
2013-01-01
Unlike so much of the current vocabulary in education and technology that seems to stir more confusion than clarity, most public service librarians may already have a general idea about digital badges. As visual representations of individual accomplishments, competencies or skills that are awarded by groups, institutions, or organizations, they…
ERIC Educational Resources Information Center
Iacchia, Flora
2005-01-01
Today, schools are actively looking for new ways to enable their students to develop storytelling skills. These skills should empower children and young adults to practice collaborative learning on many levels, from reading and writing to painting and project management. In this framework, digital painting provides educators with innovative…
NSDL National Science Digital Library
Visitors to the Digital Globe have a front seat view of Lisbon, Portugal and the Phillipine Trench. The site offers two MPEG videos which animate topographic seafloor images. The video clips were created by David Sandwell at the Scripps Institution of Oceanography. Also available are nine images of seafloor topography from around the globe. Note that the videos are very large files.
Reduction of digital errors of digital charge division type position-sensitive detectors
NASA Astrophysics Data System (ADS)
Uritani, A.; Yoshimura, K.; Takenaka, Y.; Mori, C.
1994-12-01
It is well known that "digital errors", i.e. differential non-linearity, appear in a position profile of radiation interactions when the profile is obtained with a digital charge-division-type position-sensitive detector. Two methods are presented to reduce the digital errors. They are the methods using logarithmic amplifiers and a weighting function. The validities of these two methods have been evaluated mainly by computer simulation. These methods can considerably reduce the digital errors. The best results are obtained when both methods are applied.
N-->? A transition amplitudes from QCD sum rules
NASA Astrophysics Data System (ADS)
Wang, Lai; Lee, Frank X.
2009-12-01
We present a calculation of the N to ? electromagnetic transition amplitudes using the method of QCD sum rules. A complete set of QCD sum rules is derived for the entire family of transitions from the baryon octet to decuplet. They are analyzed in conjunction with the corresponding mass sum rules using a Monte-Carlo-based analysis procedure. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and other calculations.
Cumulative sum quality control for calibrated breast density measurements
Heine, John J.; Cao Ke; Beam, Craig
2009-12-15
Purpose: Breast density is a significant breast cancer risk factor. Although various methods are used to estimate breast density, there is no standard measurement for this important factor. The authors are developing a breast density standardization method for use in full field digital mammography (FFDM). The approach calibrates for interpatient acquisition technique differences. The calibration produces a normalized breast density pixel value scale. The method relies on first generating a baseline (BL) calibration dataset, which required extensive phantom imaging. Standardizing prospective mammograms with calibration data generated in the past could introduce unanticipated error in the standardized output if the calibration dataset is no longer valid. Methods: Sample points from the BL calibration dataset were imaged approximately biweekly over an extended timeframe. These serial samples were used to evaluate the BL dataset reproducibility and quantify the serial calibration accuracy. The cumulative sum (Cusum) quality control method was used to evaluate the serial sampling. Results: There is considerable drift in the serial sample points from the BL calibration dataset that is x-ray beam dependent. Systematic deviation from the BL dataset caused significant calibration errors. This system drift was not captured with routine system quality control measures. Cusum analysis indicated that the drift is a sign of system wear and eventual x-ray tube failure. Conclusions: The BL calibration dataset must be monitored and periodically updated, when necessary, to account for sustained system variations to maintain the calibration accuracy.
Size, weight, and power in electronic payloads
NASA Astrophysics Data System (ADS)
Haislet, Donald A.; Wilson, Larry
A Tactical SIGINT System Hardware program developed by ESL, a subsidiary of TRW Avionics and Surveillance Group, is discussed. The program studied the parts of typical systems that have the greatest size, weight, and power leverage, namely, the chassis, circuit-card assemblies, thermal management techniques, and interconnections. Mechanical weight savings were achieved in both chassis and modules due to replacement of aluminum with metal matrix composites. Circuit miniaturization based on multichip modules made it possible to reduce a key digital circuit by 8:1.
27 CFR 19.166 - Required penal sums.
Code of Federal Regulations, 2011 CFR
2011-04-01
...2011-04-01 2011-04-01 false Required penal sums. 19.166 Section 19.166 Alcohol...and Withdrawal Bonds § 19.166 Required penal sums. A person must determine the penal sums for the various bonds required by...
27 CFR 25.93 - Penal sum of bond.
Code of Federal Regulations, 2010 CFR
2010-04-01
...2010-04-01 2010-04-01 false Penal sum of bond. 25.93 Section 25...Bonds and Consents of Surety § 25.93 Penal sum of bond. (a)(1) Brewers filing...semimonthly under § 25.164(c)(2), the penal sum of the brewers bond must be...
27 CFR 24.148 - Penal sums of bonds.
Code of Federal Regulations, 2010 CFR
2010-04-01
...Firearms 1 2010-04-01 2010-04-01 false Penal sums of bonds. 24.148 Section 24.148 ...Operations Bonds and Consents of Surety § 24.148 Penal sums of bonds. The penal sums of bonds prescribed in this part are as...
27 CFR 25.93 - Penal sum of bond.
Code of Federal Regulations, 2011 CFR
2011-04-01
...2011-04-01 2011-04-01 false Penal sum of bond. 25.93 Section 25...Bonds and Consents of Surety § 25.93 Penal sum of bond. (a)(1) Brewers filing...semimonthly under § 25.164(c)(2), the penal sum of the brewers bond must be...
27 CFR 24.148 - Penal sums of bonds.
Code of Federal Regulations, 2011 CFR
2011-04-01
...Firearms 1 2011-04-01 2011-04-01 false Penal sums of bonds. 24.148 Section 24.148 ...Operations Bonds and Consents of Surety § 24.148 Penal sums of bonds. The penal sums of bonds prescribed in this part are as...
Evaluating Matrix Functions by Resummations on Graphs: the Method of Path-Sums
P. -L. Giscard; S. J. Thwaite; D. Jaksch
2012-02-27
We introduce the method of path-sums which is a tool for exactly evaluating a function of a discrete matrix with possibly non-commuting entries, based on the closed-form resummation of infinite families of terms in the corresponding Taylor series. If the matrix is finite, our approach yields the exact result in a finite number of steps. We achieve this by combining a mapping between matrix powers and walks on a weighted directed graph with a universal graph-theoretic result on the structure of such walks. We present path-sum expressions for a matrix raised to a complex power, the matrix exponential, matrix inverse, and matrix logarithm. We show that the quasideterminants of a matrix can be naturally formulated in terms of a path-sum, and present examples of the application of the path-sum method. We show that obtaining the inversion height of a matrix inverse and of quasideterminants is an NP-complete problem.
... Resources Breastfeeding IMMPaCt State and Local Programs Preventing Weight Gain Language: English Español (Spanish) Recommend on Facebook ... of cancer. Choosing an Eating Plan to Prevent Weight Gain So, how do you choose a healthful ...
Weight Management and Calories
... page.preprocess.inc ). Print Share Why is weight management important? In addition to helping you feel and ... a health care provider to determine appropriate weight management for him or her. Because children and adolescents ...
ERIC Educational Resources Information Center
Clarke, Doug
1993-01-01
Describes an activity shared at an inservice teacher workshop and suitable for middle school in which students predict their ideal weight in kilograms based on tables giving ideal weights for given heights. (MDH)
Healthy Weight during Pregnancy
... Articles weights and fruits Building Muscle on a Vegetarian Diet Foods for Camping and Hiking Food Tips for ... Two weights and fruits Building Muscle on a Vegetarian Diet Foods for Camping and Hiking Food Tips for ...
Volker Becker; Thorsten Poeschel
2007-01-31
In contrast to a still common belief, a steadily flowing hourglass changes its weight in the course of time. We will show that, nevertheless, it is possible to construct hourglasses that do not change their weight.
NASA Astrophysics Data System (ADS)
Chen, Jianping; Su, Feiran; Wu, Guiling
2014-11-01
Time-interleaved photonic analog-to-digital converter (TIPADC) is a promising candidate to process ultra-wideband signals. In a TIPADC, quantization is electrical in order to obtain large effective number of bits (ENOB). In this paper, we study the issues on the signal sampling and reconstruction in the TIPADC from the systematic point of view. The sampling output and frequency response of the system are derived using a model that includes the photonic sampling, demultiplexing, photo detecting, electronic quantizing and digital processing. The signal sampling and reconstruction mechanism of TIPADC with a uniform system sampling rate and matched channels are illuminated with the spectrum of signal in each processing step. The effect of the sampling pulse and back-end electronics on the system frequency response is analyzed in detail. The feasible regions of the system for alias-free sampling in terms of system frequency response, and a set of sampling criteria on bandwidth of the sampling pulse and back-end electronics are presented for the TIPADC. We find that the analog bandwidth of TIPADC can be much higher than the bandwidth of back-end electronics due to the weighted summing introduced by the multichannel time-interleaved photonic sampling. The proposed model and sampling criteria are validated by simulations under different parameter configurations.
A single 1.5-V digital chip for a 10(6) synapse neural network.
Watanabe, T; Kimura, K; Aoki, M; Sakata, T; Ito, K
1993-01-01
A digital-chip architecture for a 10(6)-synapse neural network is proposed. It runs on a 1.5-V dry cell to allow its use in portable equipment. An on-chip DRAM cell array stores synapse weights digitally to provide easy programmability and automatic refreshing. A pitch-matched interconnection and a combinational unit circuit for summing product allow a tight layout. A dynamic data transfer circuit and the 1.5-V operation of the entire chip reduce the power dissipation, but the parallel processing nonetheless provides high speed at the 1.5-V supply. Estimated power dissipation of 75 mW and a processing speed of 1.37 giga connections per second are predicted for the chip. The memory and the processing circuits can be integrated on a 15.4-mmx18.6-mm chip by using a 0.5-mum CMOS design rule. A scaled-down version of the chip that has an 8-kb DRAM cell array was fabricated, and its operation was confirmed. PMID:18267740
NASA Astrophysics Data System (ADS)
Shirokov, B.
1984-03-01
A tachometer with digital indication was built for measuring the speed of automobile engines with only two digits in the rpm readout. It consists of a Schmitt trigger for shaping input pulses, a pulse counter, a cycle time setting multivibrator and a readout time setting multivibrator, a stabilizer, a flicker suppressor, and a capacitive transducer. The instrument operates from a 12 V battery and draws 180 mA. The transducer includes a 30 to 50 turns coil of PEL 0.5 wire wound around the conductor which connects the ignition coil to the engine distributor and its transistor is mounted on a fin-type heat sink. Tuneup of the tachometer involves matching the transducer capacitor for maximum voltage at minimum current and trimming the readout time setting multivibrator with its adjustable resistor for a 1.5 readout with a 50 Hz input signal.
NSDL National Science Digital Library
Kuphaldt, Tony R.
All About Circuits is a website that â??provides a series of online textbooks covering electricity and electronics.â? Written by Tony R. Kuphaldt, the textbooks available here are wonderful resources for students, teachers, and anyone who is interested in learning more about electronics. This specific section, Digital Communication, is the fourteenth chapter in Volume IV â??Digital. A few of the topics covered in this chapter include: Electrical signal types, Optical data communication, and Network topology. Diagrams and detailed descriptions of concepts are included throughout the chapter to provide users with a comprehensive lesson. Visitors to the site are also encouraged to discuss concepts and topics using the All About Circuits discussion forums (registration with the site is required to post materials).
NSDL National Science Digital Library
2013-01-01
The Digital Arts website was designed to offer "inspiration for digital creative." It does a fairly standup job of that, offering news updates, tutorials, reviews, features, portfolios, and information about upcoming competitions that will be of interest to those working in a range of industries. First-time visitors would do well to look at the Short Cuts area to learn about new design websites, watch artists work on compelling large format projects, and pick up scuttlebutt from experts in their fields. Moving on, the Tutorials area offers helpful guides such as "How to stop photo noise," "Add texture to retro styled artworks," and "Create X-ray vector art." Finally, the Guides area contains helpful overviews of key fields and programs like Adobe Creative Suite 6, animation, graphic design, and interactive design.
Mining Allocating Patterns in One-sum Weighted Items Yanbo J. Wang 1
Coenen, Frans
.zheng@deakin.edu.au 3 Histocompatibility and Immunogenetics Laboratory, National Blood Service Bristol Centre, UK Ying. The original ARM problem treats the importance of all items in a uniform manner. Based on a "real-life" marketing experience, Cai et al. [3] indicate that not all goods (items) share the same importance
On The Analysis of Spatially-Coupled GLDPC Codes and The Weighted Min-Sum Algorithm
Jian, Yung-Yih
2013-08-07
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 x LIST OF TABLES TABLE Page 2.1 The possible values of (?+1)i;j0 with input vectors (? 1) i;j0 when c = D( (?)j;k;0) and c 0 = D( (?)j;k;1) are codewords, where (?) j;k;0 and (?) j;k;1 are de ned in (2.45) and (2.46), respectively... the received channel value for the i-th variable node, and let (?)i;j 2 f0; 1g be the binary message from the i-th variable node to the j-th constraint node in the ?-th iteration. For simplicity, we assume no bit appears twice in a constraint, and let j(k...
NSDL National Science Digital Library
2009-08-12
This Wiki page provides a link to the recording of a webinar by Jessica Fries-Gaither. Jessica discusses digital storytelling and how can it be adapted for the middle school science classroom? Join her for an overview of this exciting multimedia art form and leave with basic how-to knowledge, ideas for science-specific projects, and resources to guide your implementation. Other links to the resources discussed in this webinar are also provided.
SUMS experiment flight results on STS-35
NASA Technical Reports Server (NTRS)
Blanchard, Robert C.; Ozoroski, Thomas A.; Nicholson, John Y.
1993-01-01
Calibrated pressure measurements for species with mass to charge ratios up to 50 amu/e(-) were obtained from the Shuttle Upper Atmosphere Mass Spectrometer (SUMS) experiment during reentry on the STS-35 mission. Data were collected from 180 km, when the signal rose above the background, to about 87 km, when the SUMS system automatically closed the gas inlet value. However, data above 115 km was contaminated from a source of gas emanating from pressure transducers connected in parallel to the mass spectrometer. At lower altitudes, the pressure transducer data is compared with the mass spectrometer total pressure with excellent agreement. The free-stream density in the rarefied flow flight regime is calculated using an orifice pressure coefficient model based upon direct simulation Monte Carlo results. This density, when compared with the 1976 U.S. standard atmosphere model, exhibits the wave-like nature seen on previous flights using accelerometry. In addition, selected spectra are presented at higher altitudes (320 km) showing the effects of the ingestion of gases from a forward fuselage fuel dump. An analysis of the spectra data from this event is presented to show that no significant permanent changes occurred which affected the data interpretation at lower altitudes. Further, the localized chemistry from the individual species during the onset of aerodynamic heating is examined to the extent possible for a closed source system, such as SUMS. Near the orifice entrance, a significant amount of CO2 was generated from chemical reactions with the carbon panels of the Orbiter and absorbed oxygen on the system tubing.
Orlov, Tarasov, and the Robinson Sum Rule
Talman, Richard; /Cornell U., Phys. Dept.; Chao, Alexander W.; /SLAC
2011-12-01
A paper proving a result now commonly known as 'Robinson sum rule' was published by Orlov and Tarasov [J. Exp. Theor. Phys. 34 651 (1958) Sov. Phys. JETP 34 339 (1958)] at about the same time that Robinson himself published the result [Phys. Rev. 111 373 (1958)]. We assigned ourselves the task of reviewing this work, as narrowly as possible, in hopes of understanding how it should be considered in view of the existing attribution. The chronology of the work is reviewed and the degree to which the two works were independent and have qualitatively different content is considered.
Pentaquark decay width in QCD sum rules
Eidemueller, M.; Navarra, F. S.; Nielsen, M.; Rodrigues da Silva, R. Rodrigues
2005-08-01
In a diquark-diquark-antiquark picture of the pentaquark we study the decay {theta}{yields}K{sup +}n within the framework of QCD sum rules. After evaluation of the relevant three-point function, we extract the coupling g{sub {theta}}{sub nK} which is directly related to the pentaquark width. Restricting the decay diagrams to those with color exchange between the mesonlike and baryonlike clusters reduces the coupling constant by a factor of 4. Whereas a small decay width might be possible for a positive parity pentaquark, it seems difficult to explain the measured width for a pentaquark with negative parity.
An energy optimal power supply for digital circuits
Ramadass, Yogesh Kumar
2006-01-01
The energy efficiency of digital circuits continues to be a major factor in determining the size and weight of battery-operated electronics. Integration of more functionality in a single system has made battery longevity ...
A Max-Sum algorithm for training discrete neural networks
NASA Astrophysics Data System (ADS)
Baldassi, Carlo; Braunstein, Alfredo
2015-08-01
We present an efficient learning algorithm for the problem of training neural networks with discrete synapses, a well-known hard (NP-complete) discrete optimization problem. The algorithm is a variant of the so-called Max-Sum (MS) algorithm. In particular, we show how, for bounded integer weights with $q$ distinct states and independent concave a priori distribution (e.g. $l_{1}$ regularization), the algorithm's time complexity can be made to scale as $O\\left(N\\log N\\right)$ per node update, thus putting it on par with alternative schemes, such as Belief Propagation (BP), without resorting to approximations. Two special cases are of particular interest: binary synapses $W\\in\\{-1,1\\}$ and ternary synapses $W\\in\\{-1,0,1\\}$ with $l_{0}$ regularization. The algorithm we present performs as well as BP on binary perceptron learning problems, and may be better suited to address the problem on fully-connected two-layer networks, since inherent symmetries in two layer networks are naturally broken using the MS approach.
To Sum or Not to Sum: Taxometric Analysis with Ordered Categorical Assessment Items
ERIC Educational Resources Information Center
Walters, Glenn D.; Ruscio, John
2009-01-01
Meehl's taxometric method has been shown to differentiate between categorical and dimensional data, but there are many ways to implement taxometric procedures. When analyzing the ordered categorical data typically provided by assessment instruments, summing items to form input indicators has been a popular practice for more than 20 years. A Monte…
40 CFR 90.708 - Cumulative Sum (CumSum) procedure.
Code of Federal Regulations, 2010 CFR
2010-07-01
...applicable) for future production, as a result of an...FEL into the sample size equation as specified...part of the year's production in cases where there...past and/or future production, without performing...all previous sample size and CumSum...
Scanning for Digitization Projects
ERIC Educational Resources Information Center
Wentzel, Larry
2007-01-01
Librarians and archivists find themselves facing the prospect of digitization. Everyone is doing it, everyone needs it. Discussions rage nationally and internationally concerning what to digitize and the best means to present and retain digital objects. Digitization is the act of making something digital, expressing a physical object "in numerical…
NASA Astrophysics Data System (ADS)
Choi, Kihwan; Ng, Alphonsus H. C.; Fobel, Ryan; Wheeler, Aaron R.
2012-07-01
Digital microfluidics (DMF) is an emerging liquid-handling technology that enables individual control over droplets on an open array of electrodes. These picoliter- to microliter-sized droplets, each serving as an isolated vessel for chemical processes, can be made to move, merge, split, and dispense from reservoirs. Because of its unique advantages, including simple instrumentation, flexible device geometry, and easy coupling with other technologies, DMF is being applied to a wide range of fields. In this review, we summarize the state of the art of DMF technology from the perspective of analytical chemistry in sections describing the theory of droplet actuation, device fabrication and integration, and applications.
NSDL National Science Digital Library
This course on Digital Forensics is provided by the Cyber Security Education Consortium (CSEC). At the end of the course, students will understand the procedures for "tracking, analyzing, and patching security holes after an incident has occurred." This includes "seizure of equipment, analysis of confiscated materials, and follow up procedures relating to the incident." Links are provided to learn more about the Major Topics Covered, Course Learning Objectives, and Course Outline. The Course Outline includes a list of careers that require the knowledge from this course and related textbooks.
Data rate reduction using a digital anti-aliasing filter
NASA Astrophysics Data System (ADS)
Lee, Kyong H.; Maschhoff, Robert H.
Digital antialiasing filtering techniques in a PCM data acquisition system are presented which allow reduction of the sampling rate with minimum increases in size, weight, and power of the hardware. Using a finite impulse response (FIR) digital filter, the sampling rate can be reduced to about 2.5 times the signal bandwidth. The digital antiimage filter or interpolation filter is useful in the reproduction process if an analog output is to be recreated.
NSDL National Science Digital Library
Another Berkeley Sunsite, funded by the Andrew W. Mellon Foundation, the Digital Scriptorium is a collaborative venture from the Bancroft Library (UC Berkeley) and the Rare Book and Manuscript Library of Columbia University. Currently containing over 2,000 manuscripts and documents from the eighth through the fifteenth century, the Scriptorium plans to continue adding medieval and early Renaissance manuscripts from the two libraries and also Barnard College, Teachers College, Union Theological Seminary, UC Berkeley's Music Library, the Robbins Collection, and eventually, other institutions in the US and Europe. The current database will be made available when the SGML (Standard Generalized Markup Language) manuscript description standard is created. At present, users can search the test database. First-time visitors and less Internet-savvy researchers may find the accompanying documentation quite technical and a bit overwhelming, and they will want to devote some extra time to get acquainted with the various searchable fields. Nonetheless, the image quality is excellent and the amount of metadata is impressive. The Digital Scriptorium promises to be an invaluable resource for medieval and renaissance scholars.
NSDL National Science Digital Library
For those who feel that there may be a paucity of material on the Himalayan region, they will need to take a close look at this fine site provided through a collaboration between the Department of Social Anthropology at Cambridge University and the Anthropology Department at Cornell University. Since its inception in December 2000, the partners have managed to digitize a number of photographic collections, several journals, and a number of short films. Scholars with an interest in Himalayan studies will want to browse through the digitized volumes of such publications as Contributions to Nepalese Studies and the Journal of Bhutan Studies. One particularly intriguing collection made available here is the Frederick Williamson Collection. Williamson was a British political officer stationed in Sikkim, Bhutan, and Tibet during the 1930s. During his tenure there he and his wife took some 1,700 photographs documenting their experiences and also made a number of short films, which are also available for viewing on the site. Visitors to the site may also want to register with the project so that they are informed of project updates. [KMG
Maximum permissible load weight of a Taishuh pony at a trot.
Matsuura, A; Sakuma, S; Irimajiri, M; Hodate, K
2013-08-01
The aim of this study was to determine the loading capacity of a trotting Taishuh pony by gait analysis using a motion analysis system. Seven Taishuh Ponies (5 mares and 2 geldings) and their rider were fitted with a marker (70 mm in diameter placed on their chest) and recorded by 2 high-resolution digital DVD cameras (at a sampling frequency of 60 Hz) as they were trotting along a straight course. Each horse performed 7 tests: 1 test with a loaded weight of 70 kg, 5 tests with random loaded weights between 80 kg and 120 kg, and a final test with a loaded weight of 70 kg again. Three-dimensional movements of each marker were analyzed using motion capture system. The time series of the vertical displacements of the marker was subjected to spectrum analysis by the maximum entropy method, and the autocorrelation coefficient was calculated. The first 2 peaks of the autocorrelation were defined as symmetry and regularity of the gait, and the sum of symmetry and regularity was defined as stability. The cross-spectrum analysis (Blackman-Tukey method) also was performed to analyze the time lag and cross-correlation coefficient between the time series of both pony and rider. Among ponies, symmetry in the 120 kg test (0.54) was significantly lower than that in the first 70 kg test (0.75, P < 0.05) and stabilities in the 100 kg (1.17) and 120 kg (1.17) tests were significantly less than that in the first 70 kg (1.46, P < 0.05). Regarding the rider, there were no significant differences in symmetry, regularity, and stability between loaded weights. The time lag between the time series of horse and rider in the 120 kg test (47.6 ms) was significantly greater than that in the first 70 kg (14.3 ms, P < 0.05) test. These results suggests that the maximum permissible load weight of the Taishuh pony trotting at 3.0 m/s over a short distance was less than 100 kg, which is 43% of the BW. PMID:23736046
On the arithmetic sums of Cantor sets
NASA Astrophysics Data System (ADS)
Ilgar Eroglu, Kemal
2007-05-01
Let C? and C? be two affine Cantor sets in \\mathbb{R} with similarity dimensions d? and d?, respectively. We define an analogue of the Bandt-Graf condition for self-similar systems and use it to give necessary and sufficient conditions for having \\xyHa^{d_\\xyla+d_\\xyga}(C_\\xyla + C_\\xyga)>0 where C? + C? denotes the arithmetic sum of the sets. We use this result to analyse the orthogonal projection properties of sets of the form C? × C?. We prove that for Lebesgue almost all directions ? for which the projection is not one-to-one, the projection has zero (d? + d?)-dimensional Hausdorff measure. We demonstrate the results in the case when C? and C? are the middle-(1-2?) and middle-(1-2?) sets.
On state sums, internalisation and unification
M. D. Sheppeard
2004-05-06
In this mostly expository article, elements of higher category theory essential to the construction of a class of four dimensional quantum geometric models are reviewed. These models improve current state sum models for Quantum Gravity, such as the Barrett-Crane model, in that they appear, for instance, to remove degeneracies which swamp the partition function. Much work remains to be done before a complete construction is reached, but the crucial categorical notion of internalisation already illuminates the idea that a full unified model may result from few, albeit as yet poorly understood, additional principles. In particular, a spacetime and matter duality principle is employed through an understanding of the role of pseudomonoidal objects in categorified cohomology.
Scattering and; Delay, Scale, and Sum Migration
Lehman, S K
2011-07-06
How do we see? What is the mechanism? Consider standing in an open field on a clear sunny day. In the field are a yellow dog and a blue ball. From a wave-based remote sensing point of view the sun is a source of radiation. It is a broadband electromagnetic source which, for the purposes of this introduction, only the visible spectrum is considered (approximately 390 to 750 nanometers or 400 to 769 TeraHertz). The source emits an incident field into the known background environment which, for this example, is free space. The incident field propagates until it strikes an object or target, either the yellow dog or the blue ball. The interaction of the incident field with an object results in a scattered field. The scattered field arises from a mis-match between the background refractive index, considered to be unity, and the scattering object refractive index ('yellow' for the case of the dog, and 'blue' for the ball). This is also known as an impedance mis-match. The scattering objects are referred to as secondary sources of radiation, that radiation being the scattered field which propagates until it is measured by the two receivers known as 'eyes'. The eyes focus the measured scattered field to form images which are processed by the 'wetware' of the brain for detection, identification, and localization. When time series representations of the measured scattered field are available, the image forming focusing process can be mathematically modeled by delayed, scaled, and summed migration. This concept of optical propagation, scattering, and focusing have one-to-one equivalents in the acoustic realm. This document is intended to present the basic concepts of scalar scattering and migration used in wide band wave-based remote sensing and imaging. The terms beamforming and (delayed, scaled, and summed) migration are used interchangeably but are to be distinguished from the narrow band (frequency domain) beamforming to determine the direction of arrival of a signal, and seismic migration in which wide band time series are shifted but not to form images per se. Section 3 presents a mostly graphically-based motivation and summary of delay, scale, and sum beamforming. The model for incident field propagation in free space is derived in Section 4 under specific assumptions. General object scattering is derived in Section 5 and simplified under the Born approximation in Section 6. The model of this section serves as the basis in the derivation of time-domain migration. The Foldy-Lax, full point scatterer scattering, method is derived in Section 7. With the previous forward models in hand, delay, scale, and sum beamforming is derived in Section 8. Finally, proof-of-principle experiments are present in Section 9.
Symmetries, sum rules and constraints on effective field theories
NASA Astrophysics Data System (ADS)
Bellazzini, Brando; Martucci, Luca; Torre, Riccardo
2014-09-01
Using unitarity, analyticity and crossing symmetry, we derive universal sum rules for scattering amplitudes in theories invariant under an arbitrary symmetry group. The sum rules relate the coefficients of the energy expansion of the scattering amplitudes in the IR to total cross sections integrated all the way up to the UV. Exploiting the group structure of the symmetry, we systematically determine all the independent sum rules and positivity conditions on the expansion coefficients. For effective field theories the amplitudes in the IR are calculable and hence the sum rules set constraints on the parameters of the effective Lagrangian. We clarify the impact of gauging on the sum rules for Goldstone bosons in spontaneously broken gauge theories. We discuss explicit examples that are relevant for WW-scattering, composite Higgs models, and chiral perturbation theory. Certain sum rules based on custodial symmetry and its extensions provide constraints on the Higgs boson coupling to the electroweak gauge bosons.
Octet baryon magnetic moments from QCD sum rules
Lai Wang; Frank X. Lee
2008-04-24
A comprehensive study is made for the magnetic moments of octet baryons in the method of QCD sum rules. A complete set of QCD sum rules is derived using the external field method and generalized interpolating fields. For each member, three sum rules are constructed from three independent tensor structures. They are analyzed in conjunction with the corresponding mass sum rules. The performance of each of the sum rules is examined using the criteria of OPE convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and previous calculations.
Octet baryon magnetic moments from QCD sum rules
Wang, Lai
2008-01-01
A comprehensive study is made for the magnetic moments of octet baryons in the method of QCD sum rules. A complete set of QCD sum rules is derived using the external field method and generalized interpolating fields. For each member, three sum rules are constructed from three independent tensor structures. They are analyzed in conjunction with the corresponding mass sum rules. The performance of each of the sum rules is examined using the criteria of OPE convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and previous calculations.
Octet baryon magnetic moments from QCD sum rules
NASA Astrophysics Data System (ADS)
Wang, Lai; Lee, Frank X.
2008-07-01
A comprehensive study is made for the magnetic moments of octet baryons in the method of QCD sum rules. A complete set of QCD sum rules is derived using the external-field method and generalized interpolating fields. For each member, three sum rules are constructed from three independent tensor structures. They are analyzed in conjunction with the corresponding mass sum rules. The performance of each of the sum rules is examined using the criteria of operator product expansion convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d, and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and previous calculations.
Sum rules for electron energy loss near edge spectra
NASA Astrophysics Data System (ADS)
Rusz, Ján; Eriksson, Olle; Novák, Pavel; Oppeneer, Peter M.
2007-08-01
We derive four sum-rule expressions for spectra measured in electron energy loss near edge structure experiments. These sum rules permit the determination of spin and orbital magnetic moments, spin-orbit interaction, and number of states, analogously to the sum rules of x-ray magnetic circular dichroism. The derivation of the sum rules is based on dynamical electron diffraction theory and the properties of the mixed dynamic form factor. The accuracy of the sum rules is tested by a complete evaluation of the thickness-dependent electron energy loss spectra for iron, cobalt, and nickel crystals. We find that the sum rules reproduce both spin and orbital moments with very good accuracy. Our results provide a foundation for the use of the energy loss magnetic chiral dichroism technique as a quantitative probe of element-specific magnetic properties.
Evolution of Digital Organisms
NSDL National Science Digital Library
Bio-Inspired Technology and Systems (BITS) RET,
Students are introduced to the concepts of digital organisms and digital evolution. They learn about the research that digital evolution software makes possible, and compare and contrast it with biological evolution.
CUMULATIVE SUM TECHNIQUES IN ATM TRAFFIC MANAGEMENT
Vesilo, Rein
University, NSW 2109 AUSTRALIA Abstract Effective ATM traffic management re quires knowledge of when traffic or marking cells from violating sources. As another example, measurementbased call admission involves techniques include Shewart charts, the ShiryayevRoberts proce dure [15] and exponentially weighted moving
Gamow-Teller Sum Rules in a Relativistic Nuclear Model
Kurasawa, H; Van Giai, N; Kurasawa, Haruki; Suzuki, Toshio; Giai, Nguyen Van
2003-01-01
The Gamow-Teller sum rule is derived in a relativistic model where the nucleus is assumed to be composed of Dirac particles in Lorentz scalar and vector potentials. It is shown that the sum value in the nucleon space, which is responsible for the giant Gamow-Teller resonance state, is quenched by about 12%, compared with the non-relativistic sum rule value.
Custom ordering on digital library information retrieval
Carlos A. Furtado; Roberto Willrich; Renato Fileto; Fernando de L. Siqueira; Saïd Tazi
2009-01-01
Suitable ranking of results is crucial when searching large collections available in Digital Libraries (BDs) so the first document presented to users are the most relevant to a search criterion. Several works acknowledge the need to consider the user's preferences for ranking search results, but it is hard to determine the user profile model and how much weight individual preferences
Octet Baryon Magnetic Moments from QCD Sum Rules
NASA Astrophysics Data System (ADS)
Wang, Lai; Lee, Frank
2008-04-01
We report results on the magnetic moments of octet baryons using the method of QCD sum rules. Three sum rules from three independent tensor structures are derived for each member in the octet (p, n, ?, &+circ;, &-circ;, &-circ;, 0?, and &-circ;) using generalized interpolating fields. They are analyzed in conjunction with the corresponding mass sum rules. The convergence of each sum rule is studied, taking into account transitions in the intermediate states. Individual u, d and s quark contributions to the magnetic moment are also isolated. The results are compared to previous calculations and experiment.
N to Delta Transitions from QCD Sum Rules
NASA Astrophysics Data System (ADS)
Wang, Lai; Lee, Frank
2008-10-01
We present a calculation of the N to ? electromagnetic transition amplitudes from the method of QCD Sum Rules. A complete set of QCD sum rules is derived using the external field method and generalized interpolating fields for the entire family of transitions from baryon octet to decuplet. For each transition, thirteen sum rules are constructed from thirteen independent tensor structures. They are analyzed by a Monte-carlo procedure. Valid sum rules are identified from which the magnetic dipole GM1 and the electric quadrupole GE2 are determined. The results are compared with calculations from other models and experiment from JLab and other accelerators.
Two-Dimensional State Sum Models and Spin Structures
NASA Astrophysics Data System (ADS)
Barrett, John W.; Tavares, Sara O. G.
2015-05-01
The state sum models in two dimensions introduced by Fukuma, Hosono and Kawai are generalised by allowing algebraic data from a non-symmetric Frobenius algebra. Without any further data, this leads to a state sum model on the sphere. When the data is augmented with a crossing map, the partition function is defined for any oriented surface with a spin structure. An algebraic condition that is necessary for the state sum model to be sensitive to spin structure is determined. Some examples of state sum models that distinguish topologically-inequivalent spin structures are calculated.
NSDL National Science Digital Library
Durham, North Carolina has been the subject of many scholarly works, and its particular location and context makes it a compelling place for persons interested in examining urbanization, immigration, industrialization, and emancipation in the late 19th and early 20th centuries. Created by Duke University and the North Carolina State Library, this digital archive presents a cornucopia of primary sources, including personal letters, entries from a prominent general store in the region, maps, and census data. Visitors should feel free to browse through these documents, or they can also perform a detailed search. Other features of the site include a brief geographic overview of the Piedmont region and a glossary of terms used in the 1880 census. Educators will enjoy looking over the "Teachers' Corner", which includes lesson plans that utilize some of the primary documents in the archive.
NASA Technical Reports Server (NTRS)
Koelbl, Terry G.; Ponchak, Denise; Lamarche, Teresa
2003-01-01
Digital Avionics activities played an important role in the advancements made in civil aviation, military systems, and space applications. This document profiles advances made in each of these areas by the aerospace industry, NASA centers, and the U.S. military. Emerging communication technologies covered in this document include Internet connectivity onboard aircraft, wireless broadband communication for aircraft, and a mobile router for aircraft to communicate in multiple communication networks over the course of a flight. Military technologies covered in this document include avionics for unmanned combat air vehicles and microsatellites, and head-up displays. Other technologies covered in this document include an electronic flight bag for the Boeing 777, and surveillance systems for managing airport operations.
NASA Technical Reports Server (NTRS)
Koelbl, Terry G.; Ponchak, Denise; Lamarche, Teresa
2002-01-01
The field of digital avionics experienced another year of important advances in civil aviation, military systems, and space applications. As a result of the events of 9/11/2001, NASA has pursued activities to apply its aerospace technologies toward improved aviation security. Both NASA Glenn Research Center and Langley Research Center have performed flight research demonstrations using advanced datalink concepts to transmit live pictures from inside a jetliner, and to downlink the contents of the plane's 'black box' recorder in real time. The U.S. Navy and General Electric demonstrated survivable engine control (SEC) algorithms during engine ground tests at the Weapons Survivability Laboratory at China Lake. The scientists at Boeing Satellite Systems advanced the field of stellar inertial technology with the development of a new method for positioning optical star trackers on satellites.
Dohm, J.M.; Anderson, R.C.; Tanaka, K.L.
1998-01-01
Magmatic and tectonic activity have both contributed significantly to the surface geology of Mars. Digital structural mapping techniques have now been used to classify and date centers of tectonic activity in the western equatorial region. For example, our results show a center of tectonic activity at Valles Marineris, which may be associated with uplift caused by intrusion. Such evidence may help explain, in part, the development of the large troughs and associated outflow channels and chaotic terrain. We also find a local centre of tectonic activity near the source region of Warrego Valles. Here, we suggest that the valley system may have resulted largely from intrusive-related hydrothermal activity. We hope that this work, together with the current Mars Global Surveyor mission, will lead to a better understanding of the geological processes that shaped the Martian surface.
NASA Technical Reports Server (NTRS)
Shull, T. A. (inventor)
1982-01-01
A digital demodulator for converting pulse code modulated data from phase shift key (PSK) to non return to zero (NRZ) and to biphase data is described. The demodulator is composed of standard integrated logic circuits. The key to the demodulation function is a pair of cross coupled one shot multivibrators and which with a flip-flop produce the NRZ-L is all that is required, the circuitry is greatly simplified and the 2(v) times bit rate contraint can be removed from the carrier. A flip-flop, an OR gate, and AND gate and a binary counter generate the bit rate clock (BTCK) for the NRZ-L. The remainder of the circuitry is for converting the NRZ-L and BTCK into biphase data. The device was designed for use in the space shuttle bay environment measurements.
NSDL National Science Digital Library
Students will "digitize" photographs of human faces using various grid sizes and shades of gray. Through this activity, they gain an understanding of image resolution and how much information is needed to answer various questions.This introductory activity introduces skills that are used to recognize and interpret remotely sensed images, such as aerial photos and satellite images. To complete the activity, educators reproduce 8"x10" head shots of students (or use magazine images), and need to create transparencies with grid squares of different sizes to overlay the photographs. This activity is part of the Ground Truth Studies Teacher Handbook, which provides more than 20 activities to build student understanding of global change and remote sensing, and includes background chapters for teachers, glossary, and appendices.
ERIC Educational Resources Information Center
Katch, Victor L.
This paper describes a number of factors which go into determining weight. The paper describes what calories are, how caloric expenditure is measured, and why caloric expenditure is different for different people. The paper then outlines the way the body tends to adjust food intake and exercise to maintain a constant body weight. It is speculated…
... in a person's diabetes management plan. Weight and Type 1 Diabetes If a person has type 1 diabetes but hasn't been treated yet, he or she often loses weight. In type 1 diabetes, the body can't use glucose (pronounced: GLOO- ...
What Is Weight Loss Surgery? For some people, being overweight is about more than just looks. People who are 100 or more pounds ... t make these plans work. Doctors may do weight loss surgery if someone has tried but failed to lose ...
... your age or your BMI is above 40. Weight loss surgery (bariatric surgery) is the most effective treatment for weight loss in women with a BMI greater than 40. I have ... signs of insulin resistance and/or obesity. A low-calorie diet and exercise may lead ...
... Started Success Stories Tips for Parents The Health Effects of Overweight & Obesity External Resources Breastfeeding IMMPaCt State and Local Programs ... weight and prevent weight gain. The Possible Health Effects from Having Obesity Having obesity can increase your chances of developing ...
ERIC Educational Resources Information Center
Iona, Mario
1975-01-01
Presents a summary and comparison of various views on the concepts of mass and weight. Includes a consideration of gravitational force in an inertial system and apparent gravitational force on a rotating earth. Discusses the units and methods for measuring mass and weight. (GS)
Technology Transfer Automated Retrieval System (TEKTRAN)
This review evaluated the available scientific literature relative to anthocyanins and weight loss and/or obesity with mention of other effects of anthocyanins on pathologies that are closely related to obesity. Although there is considerable popular press concerning anthocyanins and weight loss, th...
Wire weight is lowered to water surface to measure stage at a site. Levels are made to the wire weights elevation from known benchmarks to ensure correct readings. In the background there is housing protected with dikes along the Missouri River in Mandan, ND....
Application of digital/electric systems to advanced technology aircraft
NASA Technical Reports Server (NTRS)
Bailey, A. R.
1985-01-01
Potential improvements in weight and performance of the digital/electric airplane of the 1990s are investigated, using data based on the Integrated Digital/Electric Airplane (IDEA) study, a nine-month investigation of integrated digital/electric concepts. A baseline configuration was compared to these IDEA configurations in terms of economic performance, fuel efficiency, and significant system and aircraft configuration characteristics. The 1990 baseline configuration represents a six to eight percent performance improvement over current technology; however, the IDEA airplane shows an additional three percent improvement in fuel burn performance. This improvement is due to a reduction of over 3000 pounds in systems weight alone.
Tyler Helmuth
2014-10-12
Loop-weighted walk with parameter $\\lambda\\geq 0$ is a non-Markovian model of random walks that is related to the loop $O(N)$ model of statistical mechanics. A walk receives weight $\\lambda^{k}$ if it contains $k$ loops; whether this is a reward or punishment for containing loops depends on the value of $\\lambda$. A challenging feature of loop-weighted walk is that it is not purely repulsive, meaning the weight of the future of a walk may either increase or decrease if the past is forgotten. Repulsion is typically an essential property for lace expansion arguments. This article circumvents the lack of repulsion and proves, via the lace expansion, that for any $\\lambda\\geq 0$ loop-weighted walk is diffusive in high dimensions.
78 FR 78819 - National Conference on Weights and Measures 99th Interim Meeting
Federal Register 2010, 2011, 2012, 2013, 2014
2013-12-27
...receiving receipts via digital communications such as...and to facilitate fuel economy comparisons. In a number...some state weights and measures officials and several CNG...price, value, and fuel economy comparisons between...
Positive and negative-parity flavor-octet baryons in coupled QCD sum rules
Kondo, Yoshihiko; Morimatsu, Osamu; Nishikawa, Tetsuo; Kanada-En'yo, Yoshiko
2007-02-01
We apply the method of the QCD sum rule, in which positive- and negative-parity baryons couple with each other, to the flavor-octet hyperons and investigate the parity splittings. We also reexamine the nucleon in the method, which was studied in our previous paper, by carefully choosing the Borel weight. Both in the nucleon and hyperon channels the obtained sum rules turn out to have a very good Borel stability and also have a Borel window, an energy region in which the OPE converges and the pole contribution dominates over the continuum contribution. The predicted masses of the positive- and negative-parity baryons reproduce the experimental ones fairly well in the {lambda} and {sigma} channels, if we assign the {lambda}(1670) and the {sigma}(1620) to the parity partners of the {lambda} and the {sigma}, respectively. This implies that the {lambda}(1405) is not the parity partner of the {lambda} and may be a flavor-singlet or exotic state. In the {xi} channel, the sum rule predicts the mass of the negative-parity state to be about 1.8 GeV, which leads to two possibilities; one is that the observed state with the closest mass, {xi}(1690), is the parity partner and the other is that the parity partner is not yet found but exists around 1.8 GeV.
Positive and negative-parity flavor-octet baryons in coupled QCD sum rules
Kondo, Y; Morimatsu, O; Nishikawa, T; Kanada-En'yo, Yoshiko; Kondo, Yoshihiko; Morimatsu, Osamu; Nishikawa, Tetsuo
2007-01-01
We apply the method of the QCD sum rule, in which positive- and negative-parity baryons couple with each other, to the flavor-octet hyperons and investigate the parity splittings. We also reexamine the nucleon in the method, which was studied in our previous paper, by carefully choosing the Borel weight. Both in the nucleon and hyperon channels the obtained sum rules turn out to have a very good Borel stability and also have a Borel window, an energy region in which the OPE converges and the pole contribution dominates over the continuum contribution. The predicted masses of the positive- and negative-parity baryons reproduce the experimental ones fairly well in the $\\Lambda$ and $\\Sigma$ channels, if we assign the $\\Lambda(1670)$ and the $\\Sigma(1620)$ to the parity partners of the $\\Lambda$ and the $\\Sigma$, respectively. This implies that the $\\Lambda(1405)$ is not the party partner of the $\\Lambda$ and may be a flavor-singlet or exotic state. In the $\\Xi$ channel, the sum rule predicts the mass of the neg...
Positive and negative-parity flavor-octet baryons in coupled QCD sum rules
NASA Astrophysics Data System (ADS)
Kondo, Yoshihiko; Morimatsu, Osamu; Nishikawa, Tetsuo; Kanada-En'Yo, Yoshiko
2007-02-01
We apply the method of the QCD sum rule, in which positive- and negative-parity baryons couple with each other, to the flavor-octet hyperons and investigate the parity splittings. We also reexamine the nucleon in the method, which was studied in our previous paper, by carefully choosing the Borel weight. Both in the nucleon and hyperon channels the obtained sum rules turn out to have a very good Borel stability and also have a Borel window, an energy region in which the OPE converges and the pole contribution dominates over the continuum contribution. The predicted masses of the positive- and negative-parity baryons reproduce the experimental ones fairly well in the ? and ? channels, if we assign the ?(1670) and the ?(1620) to the parity partners of the ? and the ?, respectively. This implies that the ?(1405) is not the parity partner of the ? and may be a flavor-singlet or exotic state. In the ? channel, the sum rule predicts the mass of the negative-parity state to be about 1.8 GeV, which leads to two possibilities; one is that the observed state with the closest mass, ?(1690), is the parity partner and the other is that the parity partner is not yet found but exists around 1.8 GeV.
Positive and negative-parity flavor-octet baryons in coupled QCD sum rules
Yoshihiko Kondo; Osamu Morimatsu; Tetsuo Nishikawa; Yoshiko Kanada-En'yo
2006-10-03
We apply the method of the QCD sum rule, in which positive- and negative-parity baryons couple with each other, to the flavor-octet hyperons and investigate the parity splittings. We also reexamine the nucleon in the method, which was studied in our previous paper, by carefully choosing the Borel weight. Both in the nucleon and hyperon channels the obtained sum rules turn out to have a very good Borel stability and also have a Borel window, an energy region in which the OPE converges and the pole contribution dominates over the continuum contribution. The predicted masses of the positive- and negative-parity baryons reproduce the experimental ones fairly well in the $\\Lambda$ and $\\Sigma$ channels, if we assign the $\\Lambda(1670)$ and the $\\Sigma(1620)$ to the parity partners of the $\\Lambda$ and the $\\Sigma$, respectively. This implies that the $\\Lambda(1405)$ is not the party partner of the $\\Lambda$ and may be a flavor-singlet or exotic state. In the $\\Xi$ channel, the sum rule predicts the mass of the negative-parity state to be about 1.8 GeV, which leads to two possibilities; one is that the observed state with the closest mass, $\\Xi(1690)$, is the parity partner and the other is that the parity partner is not yet found but exists around 1.8 GeV.
An Electrophysiological Signature of Summed Similarity in Visual Working Memory
ERIC Educational Resources Information Center
van Vugt, Marieke K.; Sekuler, Robert; Wilson, Hugh R.; Kahana, Michael J.
2013-01-01
Summed-similarity models of short-term item recognition posit that participants base their judgments of an item's prior occurrence on that item's summed similarity to the ensemble of items on the remembered list. We examined the neural predictions of these models in 3 short-term recognition memory experiments using electrocorticographic/depth…
Generating matrix and sums of Fibonacci and Pell sequences
NASA Astrophysics Data System (ADS)
Ho, C. K.; Woon, H. S.; Chong, Chin-Yoon
2014-07-01
In this paper, we study the Fibonacci sequence and Pell sequence and developed generating matrices for them. First we proved two results on the even sum of the Fibonacci sequence and the Pell sequence, using the generating matrix approach. We then deduce the odd sums, some identities and recursive formulas for these two sequences.
Self-dispersive sum-frequency generation at interfaces
NASA Astrophysics Data System (ADS)
van der Ham, E. W. M.; Vrehen, Q. H. F.; Eliel, E. R.
1996-09-01
We employ the self-dispersive nature of infrared-visible sum-frequency generation at interfaces to record sum-frequency spectra of molecular monolayers with a spectral resolution of a few inverse centimeters, using IR light with a spectral content of approximately 50 cm-1 .
A COMPARISON INEQUALITY FOR SUMS OF INDEPENDENT RANDOM VARIABLES
Montgomery-Smith, Stephen
A COMPARISON INEQUALITY FOR SUMS OF INDEPENDENT RANDOM VARIABLES STEPHEN J. MONTGOMERY probabilities of sums of independent Banach space valued random variables in terms of those of independent identi- cally distributed random variables. More precisely, let X1, . . . , Xn be independent Banach
A COMPARISON INEQUALITY FOR SUMS OF INDEPENDENT RANDOM VARIABLES
Montgomery-Smith, Stephen
A COMPARISON INEQUALITY FOR SUMS OF INDEPENDENT RANDOM VARIABLES #3; STEPHEN J. MONTGOMERY probabilities of sums of independent Banach space valued random variables in terms of those of independent identi- cally distributed random variables. More precisely, let X 1 ; : : : ; Xn be independent Banach
Octet magnetic Moments and their sum rules in statistical model
Batra, M
2013-01-01
The statistical model is implemented to find the magnetic moments of all octet baryons. The well-known sum rules like GMO and CG sum rules has been checked in order to check the consistency of our approach. The small discrepancy between the results suggests the importance of breaking in SU(3) symmetry.
Lattice QCD evaluation of baryon magnetic-moment sum rules
Leinweber, D.B. )
1992-01-01
Magnetic-moment combinations and sum rules are evaluated using recent results for the magnetic moments of octet baryons determined in a numerical simulation of quenched QCD. The model-independent results of the lattice calculations remove some of the confusion and contradiction surrounding past magnetic-moment sum-rule analyses. The lattice results reveal the underlying quark dynamics investigated by magnetic-moment sum rules and indicate the origin of magnetic-moment quenching for the nonstrange quarks in {Sigma}. In contrast with previous sum-rule analyses, the lattice results indicate the magnetic moments of nonstrange quarks in {Xi} are more likely enhanced than quenched relative to that in the nucleon. In most cases, the spin-dependent dynamics and center-of-mass effects giving rise to baryon dependence of the quark moments are seen to be sufficient to violate the sum rules in agreement with experimental measurements. In turn, the sum rules are used to further examine the results of the lattice simulation. The Sachs sum rule suggests that quark loop contributions, not included in present lattice calculations, may play a key role in removing the discrepancies between lattice and experimental ratios of magnetic moments. This is supported by other sum rules sensitive to quark loop contributions. A measure of the isospin symmetry breaking in the effective quark moments due to quark loop contributions is in agreement with model expectations.
Octet magnetic Moments and their sum rules in statistical model
M. Batra; A. Upadhyay
2013-12-18
The statistical model is implemented to find the magnetic moments of all octet baryons. The well-known sum rules like GMO and CG sum rules has been checked in order to check the consistency of our approach. The small discrepancy between the results suggests the importance of breaking in SU(3) symmetry.
College Sports: The Mystery of the Zero-Sum Game
ERIC Educational Resources Information Center
Getz, Malcolm; Siegfried, John J.
2012-01-01
In recent years, when a university may earn well over $10 million per year from fees for sports-broadcast rights, half of the teams still lose. Collegiate athletic competition is a zero sum game: The number of winners equals the number of losers. So why do universities spend growing sums of scarce resources on an activity when the odds of winning…
Optimal sequences and sum capacity of synchronous CDMA systems
Pramod Viswanath; Venkat Anantharam
1999-01-01
AbstractDThe sum capacity of a multiuser synchronous CDMA system is completely characterized in the general case of asym - metric user power constraintsDthis solves the open problem posed in [7] which had solved the equal power constraint case We identify the signature sequences with real components that achieve sum capacity and indicate a simple recursive algorithm to construct them
Well-boundedness of sums and products of operators
Doust, Ian
Well-boundedness of sums and products of operators condition under which the sum, product, and indeed any polynomial combination of a well-bounded operator and a commuting real scalar-type spectral operator is well-bounded. This generalizes
On Sum--Connectivity Index of Bicyclic Graphs
Du, Zhibin
2009-01-01
We determine the minimum sum--connectivity index of bicyclic graphs with $n$ vertices and matching number $m$, where $2\\le m\\le \\lfloor\\frac{n}{2}\\rfloor$, the minimum and the second minimum, as well as the maximum and the second maximum sum--connectivity indices of bicyclic graphs with $n\\ge 5$ vertices. The extremal graphs are characterized.
FLOW CONTROL USING THE THEORY OF ZERO SUM MARKOV GAMES
FLOW CONTROL USING THE THEORY OF ZERO SUM MARKOV GAMES Eitan ALTMAN \\Lambda INRIA Centre Sophia in applying game theory to control of queueing networks and control in telecommunications. Among of zerosum Markov games, and a value iteration algorithm is used to solve it. We show that there exists
Labelling Wheels for Minimum Sum Number Mirka MILLER Joseph RYAN
Smyth, William F.
Labelling Wheels for Minimum Sum Number Mirka MILLER Joseph that for wheels Wn of order n+1 and size m = 2n, oe(Wn) 2 (m); that is, that the sum number is of the same was taken by Hartsfield and Smyth [6], who showed that for wheels Wn, oe(Wn) 2 (m). Wheels are thus graphs
Chain hexagonal cacti with the extremal eccentric distance sum.
Qu, Hui; Yu, Guihai
2014-01-01
Eccentric distance sum (EDS), which can predict biological and physical properties, is a topological index based on the eccentricity of a graph. In this paper we characterize the chain hexagonal cactus with the minimal and the maximal eccentric distance sum among all chain hexagonal cacti of length n, respectively. Moreover, we present exact formulas for EDS of two types of hexagonal cacti. PMID:24741365
76 FR 31262 - Application for Annuity or Lump Sum
Federal Register 2010, 2011, 2012, 2013, 2014
2011-05-31
...RETIREMENT BOARD 20 CFR Part 217 RIN 3220-AB64 Application for Annuity or Lump Sum AGENCY: Railroad Retirement Board. ACTION: Proposed...Federal Regulations as follows: PART 217--APPLICATION FOR ANNUITY OR LUMP SUM 1. The authority citation for part 217...
76 FR 60372 - Application for Annuity or Lump Sum
Federal Register 2010, 2011, 2012, 2013, 2014
2011-09-29
...RETIREMENT BOARD 20 CFR Part 217 RIN 3220-AB64 Application for Annuity or Lump Sum AGENCY: Railroad Retirement Board. ACTION: Final...Federal Regulations as follows: PART 217--APPLICATION FOR ANNUITY OR LUMP SUM 0 1. The authority citation for part 217...
Improved Sum-Rate Optimization in the Multiuser MIMO Downlink
Adve, Raviraj
with channel state information at the transmitter under a sum power constraint and the achievable sum rates downlink, also known as the broadcast channel (BC), has been of particular interest in information theory). (BD), in the asymptotically high SNR region. Both of these techniques use simple linear precoding
Theoretical Sum Frequency Generation Spectroscopy of Peptides
2015-01-01
Vibrational sum frequency generation (SFG) has become a very promising technique for the study of proteins at interfaces, and it has been applied to important systems such as anti-microbial peptides, ion channel proteins, and human islet amyloid polypeptide. Moreover, so-called “chiral” SFG techniques, which rely on polarization combinations that generate strong signals primarily for chiral molecules, have proven to be particularly discriminatory of protein secondary structure. In this work, we present a theoretical strategy for calculating protein amide I SFG spectra by combining line-shape theory with molecular dynamics simulations. We then apply this method to three model peptides, demonstrating the existence of a significant chiral SFG signal for peptides with chiral centers, and providing a framework for interpreting the results on the basis of the dependence of the SFG signal on the peptide orientation. We also examine the importance of dynamical and coupling effects. Finally, we suggest a simple method for determining a chromophore’s orientation relative to the surface using ratios of experimental heterodyne-detected signals with different polarizations, and test this method using theoretical spectra. PMID:25203677
Non-malleable extractors via character sums
Wooley, Trevor D
2011-01-01
In studying how to communicate over a public channel with an active adversary, Dodis and Wichs introduced the notion of a non-malleable extractor. A non-malleable extractor dramatically strengthens the notion of a strong extractor. A strong extractor takes two inputs, a weakly-random x and a uniformly random seed y, and outputs a string which appears uniform, even given y. For a non-malleable extractor Ext, the output Ext(x,y) should appear uniform given y as well as Ext(x,A(y)), where A is an arbitrary function with A(y) not equal to y. We show that an extractor introduced by Chor and Goldreich is non-malleable when the entropy rate is above half. It outputs a linear number of bits when the entropy rate is 1/2 + Omega(1). Previously, no nontrivial parameters were known for any non-malleable extractor. To achieve a polynomial running time when outputting many bits, we rely on a widely-believed conjecture about the distribution of prime numbers in arithmetic progressions. Our analysis involves a character sum ...
Multireflection Sum Frequency Generation Vibrational Spectroscopy.
Zhang, Chi; Jasensky, Joshua; Chen, Zhan
2015-08-18
We developed a multireflection data collection method in order to improve the signal-to-noise ratio (SNR) and sensitivity of sum frequency generation (SFG) spectroscopy, which we refer to as multireflection SFG, or MRSFG for short. To achieve MRSFG, a collinear laser beam propagation geometry was adopted and trapezoidal Dove prisms were used as sample substrates. An in-depth discussion on the signal and SNR in MRSFG was performed. We showed experimentally, with "m" total internal reflections in a Dove prism, MRSFG signal is ?m times that of conventional SFG; SNR of the SFG signal-to-background is improved by a factor of >m(1/2) and
Theoretical Sum Frequency Generation Spectroscopy of Peptides.
Carr, Joshua K; Wang, Lu; Roy, Santanu; Skinner, James L
2015-07-23
Vibrational sum frequency generation (SFG) has become a very promising technique for the study of proteins at interfaces, and it has been applied to important systems such as anti-microbial peptides, ion channel proteins, and human islet amyloid polypeptide. Moreover, so-called "chiral" SFG techniques, which rely on polarization combinations that generate strong signals primarily for chiral molecules, have proven to be particularly discriminatory of protein secondary structure. In this work, we present a theoretical strategy for calculating protein amide I SFG spectra by combining line-shape theory with molecular dynamics simulations. We then apply this method to three model peptides, demonstrating the existence of a significant chiral SFG signal for peptides with chiral centers, and providing a framework for interpreting the results on the basis of the dependence of the SFG signal on the peptide orientation. We also examine the importance of dynamical and coupling effects. Finally, we suggest a simple method for determining a chromophore's orientation relative to the surface using ratios of experimental heterodyne-detected signals with different polarizations, and test this method using theoretical spectra. PMID:25203677
Humphrey, Clinton D; Tollefson, Travis T; Kriet, J David
2010-05-01
Facial plastic surgeons are accumulating massive digital image databases with the evolution of photodocumentation and widespread adoption of digital photography. Managing and maximizing the utility of these vast data repositories, or digital asset management (DAM), is a persistent challenge. Developing a DAM workflow that incorporates a file naming algorithm and metadata assignment will increase the utility of a surgeon's digital images. PMID:20511079
H. Sapiens Digital: From Digital Immigrants and Digital Natives to Digital Wisdom
ERIC Educational Resources Information Center
Prensky, Marc
2009-01-01
As we move further into the 21st century, the digital native/digital immigrant paradigm created by Marc Prensky in 2001 is becoming less relevant. In this article, Prensky suggests that we should focus instead on the development of what he calls "digital wisdom." Arguing that digital technology can make us not just smarter but truly wiser, Prensky…
N to $?$ transition amplitudes from QCD sum rules
Lai Wang; Frank X. Lee
2009-05-20
We present a calculation of the N to $\\Delta$ electromagnetic transition amplitudes using the method of QCD sum rules. A complete set of QCD sum rules are derived for the entire family of transitions from the baryon octet to decuplet. They are analyzed in conjunction with the corresponding mass sum rules using a Monte-Carlo-based analysis procedure. The performance of each of the sum rules is examined using the criteria of OPE convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and other calculations.
N to ? transition amplitudes from QCD sum rules
NASA Astrophysics Data System (ADS)
Wang, Lai; Lee, Frank X.
2009-08-01
We present a calculation of the N to ? electromagnetic transition amplitudes using the method of QCD sum rules. A complete set of QCD sum rules is derived for the entire family of transitions from the baryon octet to decuplet. They are analyzed in conjunction with the corresponding mass sum rules using a Monte Carlo-based analysis procedure. The performance of each of the sum rules is examined using the criteria of operator product expansion convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d, and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and other calculations.
N to $\\Delta$ transition amplitudes from QCD sum rules
Wang, Lai
2009-01-01
We present a calculation of the N to $\\Delta$ electromagnetic transition amplitudes using the method of QCD sum rules. A complete set of QCD sum rules are derived for the entire family of transitions from the baryon octet to decuplet. They are analyzed in conjunction with the corresponding mass sum rules using a Monte-Carlo-based analysis procedure. The performance of each of the sum rules is examined using the criteria of OPE convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and other calculations.
NSDL National Science Digital Library
To say that Johann Sebastian Bach was a gifted and prodigious composer would be like saying that Shakespeare merely wrote a few plays. This Web site is a loving tribute to his work, undertaken by the main repositories of Bach's compositions, including the Bach-Archiv in Leipzig and the University of Leipzig. New visitors to the site will want to take the well-produced guided tour that helps orient users to the wide variety of materials contained on the site. Perhaps one of the main highlights of the site is the original Bach autographs that have been digitized for public perusal. Autographs are musical manuscripts that have been written by the composer himself, and in the case of Bach, offer intimate insight into the composition process. Along with essays on the preservation of these important documents, viewers can view selected compositions, among them the "Prelude and Fugue in G Major" and the "Christmas Oratorio." Additionally, visitors can hear sound samples and view photographs of musical instruments built during his lifetime, including a lute, the legendary organ from Hilbersdorf, and echo flutes. Overall, it's a fine tribute to Bach, and more broadly, musicology.
MedlinePLUS Videos and Cool Tools
... to find out if birth order affected adult women’s height and weight. They looked at health records ... you. Related MedlinePlus Health Topics Family History Obesity Women's Health About MedlinePlus Site Map FAQs Contact Us ...
1997-11-01
Oxandrolone, an oral drug that promotes weight gain in people experiencing weight loss, has been approved by the Food and Drug Administration (FDA) for patients with HIV. Oxandrolone's effectiveness in HIV-related weight loss is unknown. The drug is a man-made anabolic steroid. Several small studies have shown encouraging results for HIV-related weight loss when doses two to eight times the recommended dosage were used. Daily doses ranging from 20 to 80 mg appear to be needed for treating HIV-associated wasting syndrome. A host of side effects usually associated with anabolic steroids are not seen as frequently with oxandrolone, including liver toxicity. More information can be obtained by contacting the Project Inform Hotline. PMID:11365375
... at rest, it is known as the basal metabolic rate (BMR). Indeed, measurement of the BMR was one ... story relating weight and thyroid. For example, when metabolic rates are reduced in animals by various means (for ...
... Research (DIR) Annual Report NICHD Research and National Child Abuse Prevention Month Pregnancy & Healthy Weight Currently selected NICHD ... on Preventing Preterm Birth Strengthening Families & Communities: National Child Abuse Prevention Month News & Media Join NICHD Listservs News ...
... Corticosteroids Some drugs used to treat bipolar disorder, schizophrenia, and depression Some drugs used to treat diabetes ... al. Position of the American Dietetic Association: weight management. J Am Diet Assoc. 2009;109:330-346.
NASA Astrophysics Data System (ADS)
Matulef, Kevin; O'Donnell, Ryan; Rubinfeld, Ronitt; Servedio, Rocco A.
We consider the problem of testing whether a Boolean function f:{ - 1,1} n ?{ - 1,1} is a ±1-weight halfspace, i.e. a function of the form f(x) = sgn(w 1 x 1 + w 2 x 2 + ? + w n x n ) where the weights w i take values in { - 1,1}. We show that the complexity of this problem is markedly different from the problem of testing whether f is a general halfspace with arbitrary weights. While the latter can be done with a number of queries that is independent of n [7], to distinguish whether f is a ±-weight halfspace versus ?-far from all such halfspaces we prove that nonadaptive algorithms must make ?(logn) queries. We complement this lower bound with a sublinear upper bound showing that O(sqrt{n}\\cdot poly(1/?)) queries suffice.
... Some kids and teens are underweight because of eating disorders , like anorexia or bulimia, which need medical attention. Back Continue The Role ... and Obesity Weight and Diabetes Your Child's Growth Eating Disorders Body Mass Index (BMI) Charts Healthy Eating Keeping ...
ERIC Educational Resources Information Center
Blum, Ann
1987-01-01
Presents a lesson in multiple parts designed to explain the importance of standardized weights and measures and to demonstrate how governmental activities have changed standards and influenced commerce. (JDH)
Using Triangularly Weighted Interpolation to Get 13Bit PCM from a Sigma-Delta Modulator
JAMES C. CANDY; Y. Ching; D. Alexander
1976-01-01
We present and analyze a method of interpolation that improves the amplitude resolution of an analog-to-digital converter. The technique requires feedback around a quantizer that operates at high speed and digital accumulation of its quantized values to provide a PCM output. We show that use of appropriate weights in the accumulation has important advantages for providing finer resoution, less spectral
Digital signal processing: Handbook
NASA Astrophysics Data System (ADS)
Goldenberg, L. M.; Matiushkin, B. D.; Poliak, M. N.
The fundamentals of the theory and design of systems and devices for the digital processing of signals are presented. Particular attention is given to algorithmic methods of synthesis and digital processing equipment in communication systems (e.g., selective digital filtering, spectral analysis, and variation of the signal discretization frequency). Programs for the computer-aided analysis of digital filters are described. Computational examples are presented, along with tables of transfer function coefficients for recursive and nonrecursive digital filters.
Ted Quinn; Jerry Mauck; Richard Bockhorst; Ken Thomas
2013-07-01
The nuclear industry has been slow to incorporate digital sensor technology into nuclear plant designs due to concerns with digital qualification issues. However, the benefits of digital sensor technology for nuclear plant instrumentation are substantial in terms of accuracy, reliability, availability, and maintainability. This report demonstrates these benefits in direct comparisons of digital and analog sensor applications. It also addresses the qualification issues that must be addressed in the application of digital sensor technology.
de Rooster, H; Risselada, M; van Bree, H
2007-03-01
Excision arthroplasty of the interphalangeal joint was used as an alternative to digit amputation for comminuted fractures of the phalangeal bones in two dogs. Both patients had return of pain-free use of the affected limb, even though both weight-bearing digits were involved in one case. This type of surgery might prove to be superior to the more invasive digit amputation, salvaging the digits and providing a better functional outcome. PMID:17355610
Digital second-order phase-locked loop
NASA Technical Reports Server (NTRS)
Holes, J. K.; Carl, C.; Tegnelia, C. R. (inventors)
1973-01-01
A digital second-order phase-locked loop is disclosed in which a counter driven by a stable clock pulse source is used to generate a reference waveform of the same frequency as an incoming waveform, and to sample the incoming waveform at zero-crossover points. The samples are converted to digital form and accumulated over M cycles, reversing the sign of every second sample. After every M cycles, the accumulated value of samples is hard limited to a value SGN = + or - 1 and multiplied by a value delta sub 1 equal to a number of n sub 1 of fractions of a cycle. An error signal is used to advance or retard the counter according to the sign of the sum by an amount equal to the sum.
Computation of synthetic mammograms with an edge-weighting algorithm
NASA Astrophysics Data System (ADS)
Homann, Hanno; Bergner, Frank; Erhard, Klaus
2015-03-01
The promising increase in cancer detection rates1, 2 makes digital breast tomosynthesis (DBT) an interesting alternative to full-field digital mammography (FFDM) in breast cancer screening. However, this benefit comes at the cost of an increased average glandular dose in a combined DBT plus FFDM acquisition protocol. Synthetic mammograms, which are computed from the reconstructed tomosynthesis volume data, have demonstrated to be an alternative to a regular FFDM exposure in a DBT plus synthetic 2D reading mode.3 Besides weighted averaging and modified maximum intensity projection (MIP) methods,4, 5 the integration of CAD techniques for computing a weighting function in the forward projection step of the synthetic mammogram generation has been recently proposed.6, 7 In this work, a novel and computationally efficient method is presented based on an edge-retaining algorithm, which directly computes the weighting function by an edge-detection filter.
Weight Loss Nutritional Supplements
NASA Astrophysics Data System (ADS)
Eckerson, Joan M.
Obesity has reached what may be considered epidemic proportions in the United States, not only for adults but for children. Because of the medical implications and health care costs associated with obesity, as well as the negative social and psychological impacts, many individuals turn to nonprescription nutritional weight loss supplements hoping for a quick fix, and the weight loss industry has responded by offering a variety of products that generates billions of dollars each year in sales. Most nutritional weight loss supplements are purported to work by increasing energy expenditure, modulating carbohydrate or fat metabolism, increasing satiety, inducing diuresis, or blocking fat absorption. To review the literally hundreds of nutritional weight loss supplements available on the market today is well beyond the scope of this chapter. Therefore, several of the most commonly used supplements were selected for critical review, and practical recommendations are provided based on the findings of well controlled, randomized clinical trials that examined their efficacy. In most cases, the nutritional supplements reviewed either elicited no meaningful effect or resulted in changes in body weight and composition that are similar to what occurs through a restricted diet and exercise program. Although there is some evidence to suggest that herbal forms of ephedrine, such as ma huang, combined with caffeine or caffeine and aspirin (i.e., ECA stack) is effective for inducing moderate weight loss in overweight adults, because of the recent ban on ephedra manufacturers must now use ephedra-free ingredients, such as bitter orange, which do not appear to be as effective. The dietary fiber, glucomannan, also appears to hold some promise as a possible treatment for weight loss, but other related forms of dietary fiber, including guar gum and psyllium, are ineffective.
Zero-Sum Bias: Perceived Competition Despite Unlimited Resources
Meegan, Daniel V.
2010-01-01
Zero-sum bias describes intuitively judging a situation to be zero-sum (i.e., resources gained by one party are matched by corresponding losses to another party) when it is actually non-zero-sum. The experimental participants were students at a university where students’ grades are determined by how the quality of their work compares to a predetermined standard of quality rather than to the quality of the work produced by other students. This creates a non-zero-sum situation in which high grades are an unlimited resource. In three experiments, participants were shown the grade distribution after a majority of the students in a course had completed an assigned presentation, and asked to predict the grade of the next presenter. When many high grades had already been given, there was a corresponding increase in low grade predictions. This suggests a zero-sum bias, in which people perceive a competition for a limited resource despite unlimited resource availability. Interestingly, when many low grades had already been given, there was not a corresponding increase in high grade predictions. This suggests that a zero-sum heuristic is only applied in response to the allocation of desirable resources. A plausible explanation for the findings is that a zero-sum heuristic evolved as a cognitive adaptation to enable successful intra-group competition for limited resources. Implications for understanding inter-group interaction are also discussed. PMID:21833251
Average Weighted Receiving Time of Weighted Tetrahedron Koch Networks
NASA Astrophysics Data System (ADS)
Dai, Meifeng; Zhang, Danping; Ye, Dandan; Zhang, Cheng; Li, Lei
2015-07-01
We introduce weighted tetrahedron Koch networks with infinite weight factors, which are generalization of finite ones. The term of weighted time is firstly defined in this literature. The mean weighted first-passing time (MWFPT) and the average weighted receiving time (AWRT) are defined by weighted time accordingly. We study the AWRT with weight-dependent walk. Results show that the AWRT for a nontrivial weight factor sequence grows sublinearly with the network order. To investigate the reason of sublinearity, the average receiving time (ART) for four cases are discussed.
Lorcaserin for weight management
Taylor, James R; Dietrich, Eric; Powell, Jason
2013-01-01
Type 2 diabetes and obesity commonly occur together. Obesity contributes to insulin resistance, a main cause of type 2 diabetes. Modest weight loss reduces glucose, lipids, blood pressure, need for medications, and cardiovascular risk. A number of approaches can be used to achieve weight loss, including lifestyle modification, surgery, and medication. Lorcaserin, a novel antiobesity agent, affects central serotonin subtype 2A receptors, resulting in decreased food intake and increased satiety. It has been studied in obese patients with type 2 diabetes and results in an approximately 5.5 kg weight loss, on average, when used for one year. Headache, back pain, nasopharyngitis, and nausea were the most common adverse effects noted with lorcaserin. Hypoglycemia was more common in the lorcaserin groups in the clinical trials, but none of the episodes were categorized as severe. Based on the results of these studies, lorcaserin was approved at a dose of 10 mg twice daily in patients with a body mass index ?30 kg/m2 or ?27 kg/m2 with at least one weight-related comorbidity, such as hypertension, type 2 diabetes mellitus, or dyslipidemia, in addition to a reduced calorie diet and increased physical activity. Lorcaserin is effective for weight loss in obese patients with and without type 2 diabetes, although its specific role in the management of obesity is unclear at this time. This paper reviews the clinical trials of lorcaserin, its use from the patient perspective, and its potential role in the treatment of obesity. PMID:23788837
Lorcaserin for weight management.
Taylor, James R; Dietrich, Eric; Powell, Jason
2013-01-01
Type 2 diabetes and obesity commonly occur together. Obesity contributes to insulin resistance, a main cause of type 2 diabetes. Modest weight loss reduces glucose, lipids, blood pressure, need for medications, and cardiovascular risk. A number of approaches can be used to achieve weight loss, including lifestyle modification, surgery, and medication. Lorcaserin, a novel antiobesity agent, affects central serotonin subtype 2A receptors, resulting in decreased food intake and increased satiety. It has been studied in obese patients with type 2 diabetes and results in an approximately 5.5 kg weight loss, on average, when used for one year. Headache, back pain, nasopharyngitis, and nausea were the most common adverse effects noted with lorcaserin. Hypoglycemia was more common in the lorcaserin groups in the clinical trials, but none of the episodes were categorized as severe. Based on the results of these studies, lorcaserin was approved at a dose of 10 mg twice daily in patients with a body mass index ?30 kg/m(2) or ?27 kg/m(2) with at least one weight-related comorbidity, such as hypertension, type 2 diabetes mellitus, or dyslipidemia, in addition to a reduced calorie diet and increased physical activity. Lorcaserin is effective for weight loss in obese patients with and without type 2 diabetes, although its specific role in the management of obesity is unclear at this time. This paper reviews the clinical trials of lorcaserin, its use from the patient perspective, and its potential role in the treatment of obesity. PMID:23788837
Incomplete exponential sums and Diffie-Hellman triples
NASA Astrophysics Data System (ADS)
Banks, William D.; Friedlander, John B.; Konyagin, Sergei V.; Shparlinski, Igor E.
2006-03-01
Let p be a prime and vartheta an integer of order t in the multiplicative group modulo p. In this paper, we continue the study of the distribution of Diffie-Hellman triples (vartheta(x,) vartheta(y,) vartheta(xy) ) by considering the closely related problem of estimating exponential sums formed from linear combinations of the entries in such triples. We show that the techniques developed earlier for complete sums can be combined, modified and developed further to treat incomplete sums as well. Our bounds imply uniformity of distribution results for Diffie-Hellman triples as the pair (x,y) varies over small boxes.
On the Adjacent Eccentric Distance Sum Index of Graphs
Qu, Hui; Cao, Shujuan
2015-01-01
For a given graph G, ?(v) and deg(v) denote the eccentricity and the degree of the vertex v in G, respectively. The adjacent eccentric distance sum index of a graph G is defined as ?sv(G)=?v?V(G)?(v)D(v)deg(v), where D(v)=?u?V(G)d(u,v) is the sum of all distances from the vertex v. In this paper we derive some bounds for the adjacent eccentric distance sum index in terms of some graph parameters, such as independence number, covering number, vertex connectivity, chromatic number, diameter and some other graph topological indices. PMID:26091095
Comment on testing'' the Gamow-Teller sum rule
Goodman, C.D. (Indiana University Cyclotron Facility, Bloomington, IN (USA)); Rapaport, J. (Ohio University, Athens, OH (USA)); Bloom, S.D. (Lawrence Livermore National Laboratory, Livermore, CA (USA))
1990-09-01
Several recent papers purport to test'' the Gamow-Teller sum rule. They compare the differences between incomplete strength function integrals for the {beta}{sup {minus}} and {beta}{sup +} directions with the quantity 3({ital N}{minus}{ital Z}) and interpret discrepancies as degrees of failure of the sum rule. We point out that the Gamow-Teller sum rule is an exact operator relationship, not a model to be tested. It is useful for determining whether a measured strength function is complete.
On the Adjacent Eccentric Distance Sum Index of Graphs.
Qu, Hui; Cao, Shujuan
2015-01-01
For a given graph G, ?(v) and deg(v) denote the eccentricity and the degree of the vertex v in G, respectively. The adjacent eccentric distance sum index of a graph G is defined as [Formula: see text], where [Formula: see text] is the sum of all distances from the vertex v. In this paper we derive some bounds for the adjacent eccentric distance sum index in terms of some graph parameters, such as independence number, covering number, vertex connectivity, chromatic number, diameter and some other graph topological indices. PMID:26091095
... oxygen into energy), and behavior or habits. Energy Balance Energy balance is important for maintaining a healthy weight. The ... OUT over time = weight stays the same (energy balance) More energy IN than OUT over time = weight ...
Weight knowledge and weight magnitude: impact on lumbosacral loading.
Farrag, Ahmed T; Elsayed, Walaa H; El-Sayyad, Mohsen M; Marras, William S
2015-01-01
Several factors can impact lumbosacral loads during lifting, including weight knowledge and weight magnitude. However, interaction between them has never been tested. This study investigated the interaction effect of these variables on lumbosacral forces and moments. Participants performed symmetrical lifts using three different weights. Weight knowledge involved known and unknown weight conditions. A biologically assisted dynamic model was used to calculate spinal loading parameters. Weight impacted all variables, while knowledge impacted only compression, by a moderate amount (5%), and spinal moments. Lifting a lightweight resulted in a difference of 16% and 7.2% between knowledge conditions for compression and anterior-posterior shear forces, respectively, compared with a negligible difference of < 1% when lifting a heavy weight. Increased spinal loading with light unknown weight can be attributed to increased muscular co-contraction. Weight knowledge is important to consider at low weight levels as it can increase tissue loading to values equivalent to lifting a heavier weight. PMID:25329859
Seeram, Euclid
2004-01-01
Digital image processing is now commonplace in radiology, nuclear medicine and sonography. This article outlines underlying principles and concepts of digital image processing. After completing this article, readers should be able to: List the limitations of film-based imaging. Identify major components of a digital imaging system. Describe the history and application areas of digital image processing. Discuss image representation and the fundamentals of digital image processing. Outline digital image processing techniques and processing operations used in selected imaging modalities. Explain the basic concepts and visualization tools used in 3-D and virtual reality imaging. Recognize medical imaging informatics as a new area of specialization for radiologic technologists. PMID:15352557
Light weight phosphate cements
Wagh, Arun S. (Naperville, IL); Natarajan, Ramkumar, (Woodridge, IL); Kahn, David (Miami, FL)
2010-03-09
A sealant having a specific gravity in the range of from about 0.7 to about 1.6 for heavy oil and/or coal bed methane fields is disclosed. The sealant has a binder including an oxide or hydroxide of Al or of Fe and a phosphoric acid solution. The binder may have MgO or an oxide of Fe and/or an acid phosphate. The binder is present from about 20 to about 50% by weight of the sealant with a lightweight additive present in the range of from about 1 to about 10% by weight of said sealant, a filler, and water sufficient to provide chemically bound water present in the range of from about 9 to about 36% by weight of the sealant when set. A porous ceramic is also disclosed.
Sethi, Bipin Kumar; Nagesh, V Sri
2015-05-01
Ramadan fasting is associated with significant weight loss in both men and women. Reduction in blood pressure, lipids, blood glucose, body mass index and waist and hip circumference may also occur. However, benefits accrued during this month often reverse within a few weeks of cessation of fasting, with most people returning back to their pre-Ramadan body weights and body composition. To ensure maintenance of this fasting induced weight loss, health care professionals should encourage continuation of healthy dietary habits, moderate physical activity and behaviour modification, even after conclusion of fasting. It should be realized that Ramadan is an ideal platform to target year long lifestyle modification, to ensure that whatever health care benefits have been gained during this month, are perpetuated. PMID:26013789
Jimenez, J.C.; Biscay, R.; Aubert, E.
1996-07-01
An approach for the parametric representation of anatomical structures of the human body by means of trigonometric interpolating sums (TIS) is introduced. This representation is constructed on the basis of the geometric information provided by medical digital images and an arbitrarily chosen system of curvilinear coordinates. The parameterization defined by these coordinates is approximated through TIS by using a multidimensional extension of the Lancozos`s method for accelerating the convergence of trigonometric approximations for smooth, nonperiodic functions. This allows us to obtain accurate representations for a wide class of anatomical structures, including nonclosed ones. An upper bound of the approximation error is derived in the sense of the supremum norm. The reconstruction of a human face and the surface of a brain cortex are shown as illustrative examples of the parameterization by means of TIS. 23 refs., 2 figs.
Digital Forensonomics the Economics of Digital Richard E Overill
Overill, Richard E.
Digital Forensonomics the Economics of Digital Forensics Richard E Overill Department introduces the economics of digital forensics (EDF) and describes the use of template patterns based on Bayesian network architectures for producing cost effective digital forensic investigations, making use
Random walks on non-homogenous weighted Koch networks
NASA Astrophysics Data System (ADS)
Dai, Meifeng; Li, Xingyi; Xi, Lifeng
2013-09-01
In this paper, we introduce new models of non-homogenous weighted Koch networks on real traffic systems depending on the three scaling factors r1,r2,r3?(0,1). Inspired by the definition of the average weighted shortest path (AWSP), we define the average weighted receiving time (AWRT). Assuming that the walker, at each step, starting from its current node, moves uniformly to any of its neighbors, we show that in large network, the AWRT grows as power-law function of the network order with the exponent, represented by ?(r1,r2,r3)=log4(1+r1+r2+r3). Moreover, the AWSP, in the infinite network order limit, only depends on the sum of scaling factors r1,r2,r3.
Determining \\|Vub\\| from the sum rule for semileptonic B decay
NASA Astrophysics Data System (ADS)
Jin, Changhao
2000-07-01
A precise determination of \\|Vub\\| can be obtained exploiting the sum rule for inclusive charmless semileptonic B-meson decays. The sum rule is derived on the basis of light-cone expansion and b-flavored quantum number conservation. The sum rule does not receive any perturbative QCD correction. In this determination of \\|Vub\\|, there is no perturbative QCD uncertainty, while the dominant hadronic uncertainty is avoided. Moreover, this method is not only theoretically quite clean, but experimentally also very efficient in the discrimination between B-->Xul? signal and B-->Xcl? background. The sum rule requires measuring the lepton pair spectrum. We analyze the lepton pair spectrum, including the leading perturbative and nonperturbative QCD corrections.
Area Between Two Curves as Limits of Riemann Sums
NSDL National Science Digital Library
Roberts, Lila F.
2000-05-13
This demo incorporates combines the visualization of approximating rectangles together with a graph of the approximate areas as a function of the number of rectangles. Thus, the limiting behavior of the approximating sums can be observed on the graph.
Said Results for Gdh-Related Sum Rules
NASA Astrophysics Data System (ADS)
Arndt, R. A.; Briscoe, W. J.; Strakovsky, I. I.; Workman, R. L.
2003-06-01
Model-dependence of the single-pion contribution to the GDH, Baldin, and forward spin-polarizability sum rules is explored, using the most recent SAID multipole analysis. Results from SAID and MAID are compared.
Gamow-Teller sum rule in relativistic nuclear models
Haruki Kurasawa; Toshio Suzuki
2006-04-06
Relativistic corrections are investigated to the Gamow-Teller(GT) sum rule with respect to the difference between the $\\beta_-$ and $\\beta_+$ transition strengths in nuclei. Since the sum rule requires the complete set of the nuclear states, the relativistic corrections come from the anti-nucleon degrees of freedom. In the relativistic mean field approximation, the total GT strengths carried by the nucleon sector is quenched by about 12% in nuclear matter, while by about 8% in finite nuclei, compared to the sum rule value. The coupling between the particle-hole states with the nucleon-antinucleon states is also discussed with the relativistic random phase approximation, where the divergence of the response function is renormalized with use of the counter terms in the Lagrangian. It is shown that the approximation to neglect the divergence, like the no-sea approximation extensively used so far, is unphysical, from the sum-rule point of view.
Gamow-Teller sum rule in relativistic nuclear models
Kurasawa, H; Kurasawa, Haruki; Suzuki, Toshio
2006-01-01
Relativistic corrections are investigated to the Gamow-Teller(GT) sum rule with respect to the difference between the $\\beta_-$ and $\\beta_+$ transition strengths in nuclei. Since the sum rule requires the complete set of the nuclear states, the relativistic corrections come from the anti-nucleon degrees of freedom. In the relativistic mean field approximation, the total GT strengths carried by the nucleon sector is quenched by about 12% in nuclear matter, while by about 8% in finite nuclei, compared to the sum rule value. The coupling between the particle-hole states with the nucleon-antinucleon states is also discussed with the relativistic random phase approximation, where the divergence of the response function is renormalized with use of the counter terms in the Lagrangian. It is shown that the approximation to neglect the divergence, like the no-sea approximation extensively used so far, is unphysical, from the sum-rule point of view.
Parity Projected QCD Sum Rule of the Nucleon with MEM
NASA Astrophysics Data System (ADS)
Ohtani, Keisuke; Gubler, Philipp; Oka, Makoto
2013-08-01
The nucleon and its negative-parity excited states are examined in a maximum entropy method analysis of QCD sum rules. We derive the parity projected nucleon sum rules with all known first order ? s corrections to the Wilson coefficients of the operator product expansion (OPE). As these corrections have turned out to be large, we suppress them by using a phase-rotated Gaussian kernel. This phase rotation strongly suppresses the continuum contribution and improves the convergence of the OPE. The resulting sum rule has the interesting feature that it is dominated by the term containing the chiral condensate of dimension 3. Analyzing this sum rule by the maximum entropy method, we are able to extract information of both the positive and negative parity states.
Low rank decompositions for sum of squares optimization
Sun, Jia Li, S.M. Massachusetts Institute of Technology
2006-01-01
In this thesis, we investigate theoretical and numerical advantages of a novel representation for Sum of Squares (SOS) decomposition of univariate and multivariate polynomials. This representation formulates a SOS problem ...
Further Results on the Riemann Hypothesis for Angular Lattice Sums
Ross C. McPhedran Lindsay C. Botten; Nicolae-Alexandru P. Nicorovici
2009-11-03
We present further results on a class of sums which involve complex powers of the distance to points in a two-dimensional square lattice and trigonometric functions of their angle, supplementing those in a previous paper (McPhedran et al, Porc. Roy. Soc., 2008). We give a general expression which permits numerical evaluation of members of the class of sums to arbitrary order. We use this to illustrate numerically the properties of trajectories along which the real and imaginary parts of the sums are zero, and we show results for the first two of a particular set of angular sums which indicate their density of zeros on the critical line of the complex exponent is the same as that for the product of the Riemann zeta function and the Catalan beta function.
Faraday effect revisited: sum rules and convergence issues
Horia D. Cornean; Gheorghe Nenciu
2010-05-13
This is the third paper of a series revisiting the Faraday effect. The question of the absolute convergence of the sums over the band indices entering the Verdet constant is considered. In general, sum rules and traces per unit volume play an important role in solid state physics, and they give rise to certain convergence problems widely ignored by physicists. We give a complete answer in the case of smooth potentials and formulate an open problem related to less regular perturbations.
Sum uncertainty relations for arbitrary N incompatible observables.
Chen, Bin; Fei, Shao-Ming
2015-01-01
We formulate uncertainty relations for arbitrary N observables. Two uncertainty inequalities are presented in terms of the sum of variances and standard deviations, respectively. The lower bounds of the corresponding sum uncertainty relations are explicitly derived. These bounds are shown to be tighter than the ones such as derived from the uncertainty inequality for two observables [Phys. Rev. Lett. 113, 260401 (2014)]. Detailed examples are presented to compare among our results with some existing ones. PMID:26370360
On certain sums over the nontrivial zeta zeros
Mark W. Coffey
2009-12-12
We study coefficients $b_n$ that are expressible as sums over the Li/Keiper constants $\\lambda_j$. We present a number of relations for and representations of $b_n$. These include the expression of $b_n$ as a sum over nontrivial zeros of the Riemann zeta function, as well as integral representations. Conditional on the Riemann hypothesis, we provide the asymptotic form of $b_n \\sim 2^{-n-2}\\ln n$.
Maid and the Gdh Sum Rule in the Resonance Region
NASA Astrophysics Data System (ADS)
Tiator, L.
2003-06-01
Recent developments of the unitary isobar model MAID are discussed and evaluations of the GDH sum rule and the forward spin polarizability ?0 are presented for protons and neutrons. Compared to previous studies the situation on the neutron has theoretically improved but for both nucleons a deviation from the sum rule of about 10 - 15% still exists. This is mainly due to the uncertain situation at higher energies for W ? 2 GeV.
Sum uncertainty relations for arbitrary N incompatible observables
Chen, Bin; Fei, Shao-Ming
2015-01-01
We formulate uncertainty relations for arbitrary N observables. Two uncertainty inequalities are presented in terms of the sum of variances and standard deviations, respectively. The lower bounds of the corresponding sum uncertainty relations are explicitly derived. These bounds are shown to be tighter than the ones such as derived from the uncertainty inequality for two observables [Phys. Rev. Lett. 113, 260401 (2014)]. Detailed examples are presented to compare among our results with some existing ones. PMID:26370360
Charm and bottom hadronic form factors with QCD sum rules
Bracco, M. E. [Faculdade de Tecnologia, Universidade do Estado do Rio de Janeiro, Rod. Presidente Dutra Km 298, Polo Industrial, 27537-000, Resende, RJ (Brazil); Rodrigues, B. O.; Cerqueira, A. Jr. [Instituto de Fisica, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-900, Rio de Janeiro, RJ (Brazil)
2013-03-25
We present a brief review of some calculations of form factors and coupling constants in vertices with charm and bottom mesons in the framework of QCD sum rules. We first discuss the motivation for this work, describing possible applications of these form factors to charm and bottom decays processes. We first make a summarize of the QCD sum rules method. We give special attention to the uncertainties of the method introducing by the intrinsic variation of the parameters. Finally we conclude.
Ideal weight and weight satisfaction: association with health practices.
Kuk, Jennifer L; Ardern, Chris I; Church, Timothy S; Hebert, James R; Sui, Xuemei; Blair, Steven N
2009-08-15
Evidence suggests that individuals have become more tolerant of higher body weights over time. To investigate this issue further, the authors examined cross-sectional associations among ideal weight, examination year, and obesity as well as the association of ideal weight and body weight satisfaction with health practices among 15,221 men and 4,126 women in the United States. Participants in 1987 reported higher ideal weights than participants in 2001, an effect particularly pronounced from 1987 to 2001 for younger and obese men (85.5 kg to 94.9 kg) and women (62.2 kg to 70.5 kg). For a given body mass index, higher ideal body weights were associated with greater weight satisfaction but lower intentions to lose weight. Body weight satisfaction was subsequently associated with greater walking/jogging, better diet, and lower lifetime weight loss but with less intention to change physical activity and diet or lose weight (P < 0.01). Conversely, body mass index was negatively associated with weight satisfaction (P < 0.01) and was associated with less walking/jogging, poorer diet, and greater lifetime weight loss but with greater intention to change physical activity and diet or lose weight. Although the health implications of these findings are somewhat unclear, increased weight satisfaction, in conjunction with increases in societal overweight/obesity, may result in decreased motivation to lose weight and/or adopt healthier lifestyle behaviors. PMID:19546153
A NOTE ON Ap WEIGHTS: PASTING WEIGHTS AND CHANGING VARIABLES
Pérez, Mario
A NOTE ON Ap WEIGHTS: PASTING WEIGHTS AND CHANGING VARIABLES MARIO P´EREZ RIERA Abstract. For two weights u, w on Rn , we show that w Ap,u (the Muckenhoupt class of weights) if and only if wu Ap and wu1-p Ap, under the assumption that u Ar for every r > 1. We also prove a rather general result
Support weight enumerators and coset weight distributions of isodual codes
Milenkovic, Olgica
Support weight enumerators and coset weight distributions of isodual codes Olgica Milenkovic In this paper various methods for computing the support weight enumerators of binary, linear, even, isodual codes are described. It is shown that there exist relationships between support weight enumerators
Minimum Weight Euclidean Matching and Weighted Relative Neighborhood Graphs
Mirzaian, Andranik
Minimum Weight Euclidean Matching and Weighted Relative Neighborhood Graphs Andranik Mirzaian The Minimum Weight Euclidean Matching (MWEM) problem is: given 2n point sites in the plane with Euclidean, O((n2 +F) logn) time algorithm based on the Weighted Voronoi Diagram(WVD) of the sites, where F
ECE 412: Digital Control and Digital Filters
Connors, Daniel A.
and properties of Discrete-Time Fourier Transform for frequency content of digital signals, particularly time domain convolution versus frequency domain multiplication - Understand concept of aliasing for discrete-time approximation and mappings from continuous to discrete-time - Digital filter design and implementation Tools
Barto, Libor
Weighted Clones Libor Barto Department of Algebra Faculty of Mathematics and Physics Charles University in Prague AAA 89, February 27, 2015 #12;what is this talk about? clones relational clones why study clones: almost whole UA + fun why study relational clones: CSP why we care about : UA CSP
NSDL National Science Digital Library
Lance King
2011-07-26
Students will recognize that the mass of an object is a measure that is independent of gravity. If they can effectively complete the guided inquiry activity as well as the short writing summary to reinforce what they learned, they will gain a foundation for understanding the difference between mass and weight.
NSDL National Science Digital Library
COSI
2009-01-01
In this activity about weights and balances, learners create their own balance using paper cups. Then, learners explore how to compare the relative mass of objects. In the "Now, explore!" section, to take the experiment one step further, they can make carbon dioxide gas and discover its mass relative to the air around it.
ERIC Educational Resources Information Center
Nutter, June
1995-01-01
Secondary level physical education teachers can have their students use math concepts while working out on the weight-room equipment. The article explains how students can reinforce math skills while weightlifting by estimating their strength, estimating their power, or calculating other formulas. (SM)
Exponential smoothing weighted correlations
NASA Astrophysics Data System (ADS)
Pozzi, F.; Di Matteo, T.; Aste, T.
2012-06-01
In many practical applications, correlation matrices might be affected by the "curse of dimensionality" and by an excessive sensitiveness to outliers and remote observations. These shortcomings can cause problems of statistical robustness especially accentuated when a system of dynamic correlations over a running window is concerned. These drawbacks can be partially mitigated by assigning a structure of weights to observational events. In this paper, we discuss Pearson's ? and Kendall's ? correlation matrices, weighted with an exponential smoothing, computed on moving windows using a data-set of daily returns for 300 NYSE highly capitalized companies in the period between 2001 and 2003. Criteria for jointly determining optimal weights together with the optimal length of the running window are proposed. We find that the exponential smoothing can provide more robust and reliable dynamic measures and we discuss that a careful choice of the parameters can reduce the autocorrelation of dynamic correlations whilst keeping significance and robustness of the measure. Weighted correlations are found to be smoother and recovering faster from market turbulence than their unweighted counterparts, helping also to discriminate more effectively genuine from spurious correlations.
E. Kalai; D. Samet
1987-01-01
Nonsymmetric Shapley values for coalitional form games with transferable utility are studied. The nonsymmetries are modeled through nonsymmetric weight systems defined on the players of the games. It is shown axiomatically that two families of solutions of this type are possible. These families are strongly related to each other through the duality relationship on games. While the first family lends
Testing +/- 1-Weight Halfspaces
Matulef, Kevin M.
2009-01-01
We consider the problem of testing whether a Boolean function f:{???1,1} [superscript n] ?{???1,1} is a ±1-weight halfspace, i.e. a function of the form f(x)?=?sgn(w [subscript 1] x [subscript 1]?+?w [subscript 2] x ...
Digital Video, Digital TV IMPA -Instituto de Matemtica Pura e
de Figueiredo, Luiz Henrique
1 Digital Video, Digital TV and Beyond Luiz Velho IMPA - Instituto de MatemÃ¡tica Pura e Aplicada 2 Outline Video in the Digital Age Deployment of Digital Video Enabling Technologies Research @ VISGRAF Laboratory Trends and the Future... 3 Evolution of Digital Video 1st Generation - Analog / Digital Conversion
COE589: Digital Forensics Research in Digital Forensics
Almulhem, Ahmad
COE589: Digital Forensics Research in Digital Forensics Dr. Ahmad Almulhem KFUPM - Fall 2012 (T121? · Research Agenda for Digital Forensics · Future Research in Digital Forensics COE589 - Ahmad Almulhem 2 #12589 - Ahmad Almulhem 6 repeat hourglass model #12;Research in Digital Forensics · Digital forensics
Digital flight control research
NASA Technical Reports Server (NTRS)
Potter, J. E.; Stern, R. G.; Smith, T. B.; Sinha, P.
1974-01-01
The results of studies which were undertaken to contribute to the design of digital flight control systems, particularly for transport aircraft are presented. In addition to the overall design considerations for a digital flight control system, the following topics are discussed in detail: (1) aircraft attitude reference system design, (2) the digital computer configuration, (3) the design of a typical digital autopilot for transport aircraft, and (4) a hybrid flight simulator.
Digital Library Curriculum collection
NSDL National Science Digital Library
2011-01-04
The Digital Library Curriculum collection contains modules that form the basis for one or a several courses on digital libraries - thus constituting a unified curriculum for the field. They also can be used in computer science, library science, information science, and other programs for other types of courses or as supplements to an existing course. Core topics include digital objects, collection development, knowledge organization, architecture, user behavior and interactions, servics, preservation, management and evaluation and digital library education and research.
A digital frequency synthesizer
JOSEPH TIERNEY; CHARLES M. RADER; B. Gold
1971-01-01
A digital frequency synthesizer has been designed and constructed based on generating digital samples ofexp [j(2^{pi}nk\\/N)]at timenT. The real and imaginary parts of this exponential form samples of quadrature sinusoids where the frequency indexkis allowed to vary(-N\\/4) leq K < (N\\/4). The digital samples drive digital to analog converters followed by low-pass interpolating filters to produce analog sinusoids. The method
Digital Homecare – An Introduction
Kanagasingam Yogesan; Lodewijk Bos; Peter Brett; Michael Christopher Gibbons
Digital homecare is a phrase that is easily understood and can be described as a container expression. Assistive technology,\\u000a telemedicine, mhealth, rehabilitation, are all contained within digital homecare. But it is impossible to find a proper definition\\u000a of digital homecare. Looking for “digital homecare” in PubMed or Google Scholar delivers less than a dozen results. An important\\u000a modern reference site
May 7, 2002 23:25 WSPC/Guidelines ExpSumsIntro EXPONENTIAL SUMS IN CODING THEORY,
Voloch, Felipe
. Vinogradov); . Riemann zeta function and distribution of prime numbers (J. Lit tlewood, N. M. Korobov, Yu. V. Linnik, E. C. Titchmarsh, I. M. Vinogradov). However it has turned out that exponential sums provide
Preserving the Digital Archive.
ERIC Educational Resources Information Center
Online & CD-ROM Review, 1995
1995-01-01
Discusses a draft report issued by the Task Force on Digital Archiving, formed by the Research Libraries Group and the Commission on Preservation and Access, that considered how to ensure continued access to records stored in digital electronic form. Topics include reformatting obsolete materials; challenges with digital objects; and cost…
J. Fridrich; Min Wu; K. J. Ray Liu; Jessica Fridrich
2009-01-01
The article explains how photo-response nonuniformity (PRNU) of imaging sensors can be used for a variety of important digital forensic tasks, such as device identification, device linking, recovery of processing history, and detection of digital forgeries. The PRNU is an intrinsic property of all digital imaging sensors due to slight variations among individual pixels in their ability to convert photons
Paul Blythe; Jessica Fridrich
In this paper, we propose a biometric solution to solve some of the significant problems associated with use of digital camera images as evidence in a court of law. We present a lossless watermarking solution to the problems associated with digital image integrity and the relationship to its chain of custody. The integrity of digital images as evidence rests on
NSDL National Science Digital Library
Bartelt, Terry L. M.
This brief interactive activity, by the Electromechanical Digital Library and Wisconsin Technical College System faculty, introduces digital circuit devices, their applications as decision or memory devices, and asks three review questions. This is an excellent resource, as are the others in the digital library, for reviewing fundamental concepts for electromechanical devices, systems, and applications.
INTELLISONDE TM Digital Radiosonde
Groppi, Christopher
, temperature, humidity, battery voltage and a spare resistance channel. The measurement of resistance Ballistic density calculations Digital Accuracy: The IS-5A Series Intellisonde measures temperature, humidity, pressure and battery voltage with digital precision. Sensor output is converted to digital words
ERIC Educational Resources Information Center
Clarke, Alan; Milner, Helen; Killer, Terry; Dixon, Genny
2008-01-01
As the Government publishes its action plan for consultation on digital inclusion, the authors consider some of the challenges and opportunities for the delivery of digital inclusion. Clarke argues that digital inclusion requires more than access to technology or the skills to use it effectively, it demands information and media literacy. Milner…
Hai Dong; Farookh Khadeer Hussain
2007-01-01
Digital Ecosystems is a neoteric terminology and there are two major definitions about it respectively from Soluta.Net and from Digital Ecosystem and Business Intelligence Institute. In this paper, to solve the ambiguous problem in Digital Ecosystem's definitions and to help researchers better understand what it is, by means of ontology, we propose a conceptual model to completely illustrate the concepts
Kornai, András
2013-01-01
Of the approximately 7,000 languages spoken today, some 2,500 are generally considered endangered. Here we argue that this consensus figure vastly underestimates the danger of digital language death, in that less than 5% of all languages can still ascend to the digital realm. We present evidence of a massive die-off caused by the digital divide. PMID:24167559
NASA Astrophysics Data System (ADS)
Chattopadhyay, S.; Das, P. P.
1993-04-01
Study of digital plane segments (dps) is fundamental to three dimensional digital geometry. In this paper we present an optimal algorithm to characterize a given set S of 3-D digital points as a dps and to construct its upper supporting plane. We have also formulated a number of area estimators for dps's and have measured their performances analytically and experimentally.
Digital Business RESEARCH BRIEF
Center for Digital Business RESEARCH BRIEF Volume XIII Number 2 May 2011 2011 MIT Center for Digital Business, E. Brynjolfsson The 4 Ways IT is Driving Innovation Erik Brynjolfsson, Director, MIT Center for Digital Business and Schussel Professor, MIT Sloan School of Management Reprinted from Sloan
Digital Literacy. Research Brief
ERIC Educational Resources Information Center
Williamson, Ronald
2011-01-01
21st Century students need a complex set of skills to be successful in a digital environment. Digital literacy, similar to traditional definitions of literacy, is a set of skills students use to locate, organize, understand, evaluate and create information. The difference is that it occurs in an environment where a growing set of digital tools…
Applied Genetics Digital PCR and Quantitation Ross Haynes Research Biologist, Applied Genetics Group Forensics@NIST 2012 Meeting Gaithersburg, MD November 28, 2012 #12;Applied Genetics Agenda · Why quantitate with qPCR? · How digital PCR Will Help Quantitation · Quantitative PCR versus Digital PCR
Buda, A.J.; Delp, E.J.
1985-01-01
This book contains 16 papers. Some of the titles are: The analysis of left ventricular function with digital subtraction angiography; Digital radiographic assessment of coronary flow reserve; Clinical application of cardiac CT; Digital two-dimensional echocardiography; and Magnetic resonance imaging of the heart.
Use of Dietary Supplements for Weight Loss in the United States: Results of a National Survey
Janine L. Pillitteri; Saul Shiffman; Jeffrey M. Rohay; Andrea M. Harkins; Steven L. Burton; Thomas A. Wadden
2008-01-01
We examined dietary supplement use for weight loss and perceptions about safety, efficacy, and regulatory oversight of these products. A random digit-dialed telephone survey was conducted in 2005–2006, with a representative sample of 3,500 US adults. The survey assessed the beliefs and practices related to weight control. Outcome measures included the prevalence of dietary supplement use for weight reduction, demographic
Correlation Weights in Multiple Regression
ERIC Educational Resources Information Center
Waller, Niels G.; Jones, Jeff A.
2010-01-01
A general theory on the use of correlation weights in linear prediction has yet to be proposed. In this paper we take initial steps in developing such a theory by describing the conditions under which correlation weights perform well in population regression models. Using OLS weights as a comparison, we define cases in which the two weighting…
Digital Libraries - Meeting the Challenges
Warner, Beth Forrest
2001-02-27
Digital Libraries – Meeting the Challenges Beth Forrest Warner Digital Library Challenges Are … … not just Digital Library challenges They are many of the same challenges facing libraries and scholarly communication in general...Digital Libraries – Meeting the Challenges Beth Forrest Warner Digital Library Challenges Are … … not just Digital Library challenges They are many of the same challenges facing libraries and scholarly communication in general...
Effects of teacher attention on digit-reversal behavior in an elementary school child.
Hasazi, J E; Hasazi, S E
1972-01-01
Teacher attention was systematically manipulated to modify digit-reversal behavior in an elementary school child. Almost invariably, the child reversed the order of digits (e.g., writing 21 as the sum of 5 + 7) when adding numbers yielding a two-digit sum. The child, along with classmates, was given 20 addition problems a day for the duration of the study, and the number of reversals was recorded. During an initial baseline period, the teacher responded to digit reversals by marking them as incorrect and then giving the child "extra help" until all sums were correctly ordered. The child's present and previous teacher had both responded to reversals in this manner for approximately one year before the present study began. An experimental period followed during which the rate of reversals decreased sharply. During this period, all sums were marked as correct (whether reversed or not); "extra help" with reversals was discontinued; and correct, i.e., non-reversed, response forms were responded to with a smile, a pat on the back, and a brief comment. A reversal period followed, during which the teacher responded to reversals as she had in the first baseline period. An increase in the rate of reversals to baseline level occurred within three days. A final period, replicating the first experimental period followed, and was characterized by a sharp decrease in the rate of reversals. PMID:16795335
Weighted Kullback-Leibler average-based distributed filtering algorithm
NASA Astrophysics Data System (ADS)
Lu, Kelin; Chang, Kuo-Chu; Zhou, Rui
2015-05-01
This paper considers a distributed filtering problem over a multi-sensor network in which the correlation of local estimation errors is unknown. Recently, this problem was studied by G. Battistelli [1] by developing a data fusion rule to calculate the weighted Kullback-Leibler average of local estimates with consensus algorithms for distributed averaging, where the weighted Kullback-Leibler average is defined as an averaged probability density function to minimize the sum of weighted Kullback-Leibler divergences from the original probability density functions. In this paper, we extends those earlier results by relaxing the prior assumption that all sensors share the same degree of confidence. Furthermore, a novel consensus-based distributed weighting coefficients selection scheme is developed to improve the fusion accuracy, where the weight associated with each sensor is adjusted based on the local estimation error covariance and the ones received from neighboring sensors, so that larger weight values will be assigned to a sensor with higher degree of confidence. Finally, a Monte-Carlo simulation with a 2D tracking system validates the effectiveness of the proposed distributed filtering algorithm.
Impact of digital control in power electronics
Dragan MaksimoviC; Regan Zane; Robert Erickson
2004-01-01
In this paper, we discuss the impact of digital control in high-frequency switched-mode power supplies (SMPS), including point-of-load and isolated DC-DC converters, microprocessor power supplies, power-factor-correction rectifiers, electronic ballasts, etc., where switching frequencies are typically in the hundreds of kHz to MHz range, and where high efficiency, static and dynamic regulation, low size and weight, as well as low controller
A Computer Algebra Toolbox for Harmonic Sums Related to Particle Physics
Jakob Ablinger
2010-11-04
In this work we present the computer algebra package HarmonicSums and its theoretical background for the manipulation of harmonic sums and some related quantities as for example Euler-Zagier sums and harmonic polylogarithms. Harmonic sums and generalized harmonic sums emerge as special cases of so-called d'Alembertian solutions of recurrence relations. We show that harmonic sums form a quasi-shuffle algebra and describe a method how we can find algebraically independent harmonic sums. In addition, we define a differentiation on harmonic sums via an extended version of the Mellin transform. Along with that, new relations between harmonic sums will arise. Furthermore, we present an algorithm which rewrites certain types of nested sums into expressions in terms of harmonic sums. We illustrate by nontrivial examples how these algorithms in cooperation with the summation package Sigma support the evaluation of Feynman integrals.
Slanger, W D; Marchello, M J; Busboom, J R; Meyer, H H; Mitchell, L A; Hendrix, W F; Mills, R R; Warnock, W D
1994-06-01
Data of sixty finished, crossbred lambs were used to develop prediction equations of total weight of retail-ready cuts (SUM). These cuts were the leg, sirloin, loin, rack, shoulder, neck, riblets, shank, and lean trim (85/15). Measurements were taken on live lambs and on both hot and cold carcasses. A four-terminal bioelectrical impedance analyzer (BIA) was used to measure resistance (Rs, ohms) and reactance (Xc, ohms). Distances between detector terminals (L, centimeters) were recorded. Carcass temperatures (T, degrees C) at time of BIA readings were also recorded. The equation predicting SUM from cold carcass measurements (n = 53, R2 = .97) was .093 + .621 x weight-.0219 x Rs + .0248 x Xc + .182 x L-.338 x T. Resistance accounted for variability in SUM over and above weight and L (P = .0016). The above equation was used to rank cold carcasses in descending order of predicted SUM. An analogous ranking was obtained from a prediction equation that used weight only (R2 = .88). These rankings were divided into five categories: top 25%, middle 50%, bottom 25%, top 50%, and bottom 50%. Within-category differences in average fat cover, yield grade, and SUM as a percentage of cold carcass weight of carcasses not placed in the same category by both prediction equations were quantified with independent t-tests. These differences were statistically significant for all categories except middle 50%. This shows that BIA located those lambs that could more efficiently contribute to SUM because a higher portion of their weight was lean. PMID:8071171
Kirkland, L; Anderson, R
1993-01-01
Only 5% of patients dieting to achieve permanent weight loss will be successful and reap the associated health benefits. Ninety-five percent will be unsuccessful. The health implications of failed dieting attempts are numerous and include negative effects on both physical and psychological well-being. Better alternatives to dieting help patients take small, positive, enjoyable steps toward healthy eating, active living, and a positive self-image. PMID:8435552
NSDL National Science Digital Library
2014-09-18
Using the same method for measuring friction that was used in the previous lesson (Discovering Friction), students design and conduct experiments to determine if weight added incrementally to objects affects the amount of friction encountered when they slide across flat surfaces. After graphing the data from their experiments, students calculate the coefficients of friction between the objects and the surfaces they moved upon, for both static and kinetic friction.
(Bessel-) weighted asymmetries
Bernhard Musch, Alexey Prokudin
2011-11-01
Semi-inclusive deep inelastic scattering experiments allow us to probe the motion of quarks inside the proton in terms of so-called transverse momentum dependent parton distribution functions (TMD PDFs), but the information is convoluted with fragmentation functions (TMD FFs) and soft factors. It has long been known that weighting the measured event counts with powers of the hadron momentum before forming angular asymmetries de-convolutes TMD PDFs and TMD FFs in an elegant way, but this also entails an undesirable sensitivity to high momentum contributions. Using Bessel functions as weights, we find a natural generalization of weighted asymmetries that preserves the de-convolution property and features soft-factor cancellation, yet allows us to be less sensitive to high transverse momenta. The formalism also relates to TMD quantities studied in lattice QCD. We briefly show preliminary lattice results from an exploratory calculation of the Boer-Mulders shift using lattices generated by the MILC and LHP collaborations at a pion mass of 500 MeV.
Channon, Andrew A R; Padmadas, Sabu S; McDonald, John W
2011-01-01
This study investigates the patterns of recording birth weight data in retrospective surveys and their influence on birth weight estimates in less developed countries. We hypothesise that the method of reporting birth weight in surveys influences the classification of infants in the low birth weight category. Population-level data from Demographic and Health Surveys conducted in six selected countries representing different regions of the world were used. Birth weight data were reported in the survey from either an official health card or from mother's memory. Birth weight distributions were examined in detail and revised low birth weight estimates were calculated accounting for potential heaping and data inconsistencies. There were substantial differences in the distribution of birth weights by method of reporting. The percentage of infants with low birth weight was higher in all six countries for birth weight recalled from memory than when reported from a health card. Health cards displayed less clustering on certain digits than memory recalled weights, but were still highly heaped in certain countries. Heaping of birth weight data on multiples of 500 g was also observed irrespective of any differences in method of reporting. The study concludes that the method of recording birth weight data can affect birth weight estimates in developing countries. Health systems in poor countries should initiate efforts to systematically monitor the recording of birth weight data ensuring for both quality and comparability at the international levels. PMID:20063179
Digital Collections, Digital Libraries and the Digitization of Cultural Heritage Information.
ERIC Educational Resources Information Center
Lynch, Clifford
2002-01-01
Discusses the development of digital collections and digital libraries. Topics include digitization of cultural heritage information; broadband issues; lack of compelling content; training issues; types of materials being digitized; sustainability; digital preservation; infrastructure; digital images; data mining; and future possibilities for…
Analog-digital codesign using coarse quantization
NASA Astrophysics Data System (ADS)
Kokkeler, Andre Bernardus Joseph
With regards to electronic systems, two important trends can be observed. The first trend is generally known as Moore's law: the digital processing capacity per chip is increasing a factor two every 18 months. Another part of the first trend is that the performance increase of integrated linear or analog processing is slow, a factor two every 4.7 years. The second trend is that the rate of data exchange between electronic systems is increasing rapidly. Because of these high data rates especially the design of data converters from analog to digital (ADCs) is demanding. For a specific set of applications, the requirements for the ADC can be relaxed by reducing the resolution of the conversion from analog to digital. Within these specific applications, signal characteristics rather than instantaneous values of the signal are determined. Reducing the resolution to an extreme extend is called 'coarse quantization'. The design of mixed signal systems is guided by a Y-chart design methodology. Analog-Digital Codesign, guided by the Y-chart approach, leads to mixed-signal systems with reduced costs compared to systems designed with the traditional methodology. The Y-chart approach also enables the use of coarse quantization as an additional design parameter to further reduce costs. This is illustrated by two case studies. The first case study concentrates on the design of a digital predistorter for Power Amplifiers (PAs) in telecommunication transmitters. In the second case study, we reconsider the design of a part of a Radio Telescope, used for Radio Astronomy. This part is called the Tied Array Adder and it sums signals from different telescopes. Both case studies show that coarse quantization can lead to mixed-signal systems with lower costs but system parameters will change. The explicit reconsideration of functional specifications, facilitated by the Y-chart approach, is therefore essential for the introduction of coarse quantization.
Supplier Selection Using Weighted Utility Additive Method
NASA Astrophysics Data System (ADS)
Karande, Prasad; Chakraborty, Shankar
2015-02-01
Supplier selection is a multi-criteria decision-making (MCDM) problem which mainly involves evaluating a number of available suppliers according to a set of common criteria for choosing the best one to meet the organizational needs. For any manufacturing or service organization, selecting the right upstream suppliers is a key success factor that will significantly reduce purchasing cost, increase downstream customer satisfaction and improve competitive ability. The past researchers have attempted to solve the supplier selection problem employing different MCDM techniques which involve active participation of the decision makers in the decision-making process. This paper deals with the application of weighted utility additive (WUTA) method for solving supplier selection problems. The WUTA method, an extension of utility additive approach, is based on ordinal regression and consists of building a piece-wise linear additive decision model from a preference structure using linear programming (LP). It adopts preference disaggregation principle and addresses the decision-making activities through operational models which need implicit preferences in the form of a preorder of reference alternatives or a subset of these alternatives present in the process. The preferential preorder provided by the decision maker is used as a restriction of a LP problem, which has its own objective function, minimization of the sum of the errors associated with the ranking of each alternative. Based on a given reference ranking of alternatives, one or more additive utility functions are derived. Using these utility functions, the weighted utilities for individual criterion values are combined into an overall weighted utility for a given alternative. It is observed that WUTA method, having a sound mathematical background, can provide accurate ranking to the candidate suppliers and choose the best one to fulfill the organizational requirements. Two real time examples are illustrated to prove its applicability and appropriateness in solving supplier selection problems.
J. Main; G. Wunner
1999-04-22
Densities of states weighted with the diagonal matrix elements of two operators A and B, i.e., rho^(A,B)(E) = sum_n delta(E-E_n) cannot, in general, be written as a trace formula, and therefore no simple extension of semiclassical trace formulas is known for this case. However, from the high resolution analysis of quantum spectra in the semiclassical regime we find strong evidence that weighting the delta-functions in the quantum mechanical density of states with the product of diagonal matrix elements, , is equivalent to weighting the periodic orbit contributions in the semiclassical periodic orbit sum with the product of the periodic orbit means, _p_p, of the classical observables A and B. Results are presented for the hydrogen atom in a magnetic field for both the chaotic and near-integrable regime, and for the circle billiard.
N to Delta Transition Amplitudes from QCD Sum Rules
NASA Astrophysics Data System (ADS)
Wang, Lai
A calculation of the N to Delta electromagnetic transition amplitudes using the method of QCD sum rules is presented. First, the method is demonstrated using the computation of the proton mass as an example. Next the magnetic moments of octet baryons are re-examined in the external field method. Then the same methodology is applied to the entire family of transitions from the baryon octet to decuplet. The complete set of QCD sum rules derived for the process are analyzed in conjunction with the corresponding mass sum rules using a Monte-Carlo-based analysis procedure. The performance of each of the sum rules is examined using the criteria of OPE convergence and ground-state dominance, along with the role of the transitions in intermediate states. Individual contributions from the u, d and s quarks are isolated and their implications in the underlying dynamics are explored. Valid sum rules are identified and their predictions are obtained. The results are compared with experiment and other calculations. Finally, a Mathematica package developed in the project to carry out the construction and analysis is presented.
Nucleon spectral function at finite density from QCD sum rules
NASA Astrophysics Data System (ADS)
Ohtani, Keiuske; Gubler, Philipp; Oka, Makoto
2014-09-01
The QCD sum rule method is a powerful tool for studying hadron properties directly from QCD. Recently, the Maximum Entropy Method (MEM) has been applied and is successful in the analysis of the rho meson sum rule in vacuum. The advantage of this approach is that the spectral functions can be extracted without assuming a specific form. We have applied this analysis method of QCD sum rules to the spectral function of the nucleon and its negative parity excited states in vacuum and have constructed the parity projected nucleon sum rules including the first order ?s corrections. Both the positive and negative parity spectral function of the nucleon are extracted after the MEM is applied to the sum rule. We find that the difference between the positive and negative parity spectral function is mainly caused by the chiral condensate. Applying this method to the analyses in nuclear matter, the mass modification of both the positive and negative parity states can be examined. By doing this, we investigate the relation between the masses and partial restoration of chiral symmetry breaking.
Marital status and body weight, weight perception, and weight management among U.S. adults.
Klos, Lori A; Sobal, Jeffery
2013-12-01
Married individuals often have higher body weights than unmarried individuals, but it is unclear how marital roles affect body weight-related perceptions, desires, and behaviors. This study analyzed cross-sectional data for 4,089 adult men and 3,989 adult women using multinomial logistic regression to examine associations between marital status, perceived body weight, desired body weight, and weight management approach. Controlling for demographics and current weight, married or cohabiting women and divorced or separated women more often perceived themselves as overweight and desired to weigh less than women who had never married. Marital status was unrelated to men's weight perception and desired weight change. Marital status was also generally unrelated to weight management approach, except that divorced or separated women were more likely to have intentionally lost weight within the past year compared to never married women. Additionally, never married men were more likely to be attempting to prevent weight gain than married or cohabiting men and widowed men. Overall, married and formerly married women more often perceived themselves as overweight and desired a lower weight. Men's marital status was generally unassociated with weight-related perceptions, desires, and behaviors. Women's but not men's marital roles appear to influence their perceived and desired weight, suggesting that weight management interventions should be sensitive to both marital status and gender differences. PMID:24183145
A full digital approach to the TDCR method.
Mini, Giuliano; Pepe, Francesco; Tintori, Carlo; Capogni, Marco
2014-05-01
Current state of the art solutions based on the Triple to Double Coincidence Ratio method are generally large size, heavy-weight and not transportable systems. This is due, on one side, to large detectors and scintillation chambers and, on the other, to bulky analog electronics for data acquisition. CAEN developed a new, full digital approach to TDCR technique based on a portable, stand-alone, high-speed multichannel digitizer, on-board Digital Pulse Processing and dedicated DAQ software that emulates the well-known MAC3 analog board. PMID:24345521
5 CFR 550.1204 - Projecting the lump-sum leave period.
Code of Federal Regulations, 2012 CFR
2012-01-01
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5 CFR 550.1204 - Projecting the lump-sum leave period.
Code of Federal Regulations, 2013 CFR
2013-01-01
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5 CFR 550.1204 - Projecting the lump-sum leave period.
Code of Federal Regulations, 2014 CFR
2014-01-01
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5 CFR 550.1204 - Projecting the lump-sum leave period.
Code of Federal Regulations, 2011 CFR
2011-01-01
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GAUSS SUMS OVER QUASI-FROBENIUS RINGS PHILIPPE LANGEVIN AND PATRICK SOL'E
Faccanoni, Gloria
of Stickelberger theorem for Gauss sums indexed by the Teichm"uller set. 1. Gauss sums GAUSS SUMS OVER QUASI-FROBENIUS RINGS PHILIPPE LANGEVIN AND PATRICK SOL character-theoretic properties. We define two types of Gauss sums over QF rings : complete
Baldwin Library of Children's Literature, Digital Collection
NSDL National Science Digital Library
The Baldwin Library Digital Collection at the University of Florida includes over 2500 fully digitized children's books, published in the United States and Great Britain between 1850 and 1900 (selected from more than more than 100,000 in the Baldwin Library of Historical Children's Literature, dating from the mid-1600s through 2007). Although baby-boomers may be disappointed in not finding their childhood favorites, it is nonetheless amazing to page through an illustrated edition of Little Red Riding Hood, published in 1895 by Raphael Tuck & Sons. Browsing through the list of recently added items also reveals the digital version of "Bill an' me": sum ov our adventers in de "Midway Plaisance", a souvenir book documenting two boys' adventures at the World's Columbian Exposition, the World's Fair held in Chicago in 1893. Books in the collection reflect the mores of the times in which they were published; for example, although the protagonists seem on the youthful side to 21st century eyes, Bill an me's adventures include the drinking of alcoholic beverages.
Uncertainty of measurement for summed masses: application to controlled substances.
Wallace, Jack
2010-12-17
Because sentences for drug possession depend on the mass of the seized drug, testing laboratories must often determine the summed mass of numerous items submitted under a single case. One common practice for this purpose is to continue analyzing and weighing samples until a legal threshold is passed, at which point it is important to inform the court whether the summed mass is significantly above the threshold, or only marginally so. This paper develops a means for estimating the uncertainty of the summed mass for the common situation where the readability, d, of the balance dominates the uncertainty. It is seen that for all sample sizes the uncertainty, UM, is given by the remarkable simple expression UM=(d/2)×[N+SQRT(3N)]+N×CCE, where N is the number of items and CCE is the absolute value of the calibration check error. In most instances, this can be further simplified to UM=N×d. PMID:21094384
Lung counting: summing techniques to reduce the MDA.
Kramer, Gary H; Hauck, Barry M; Allen, Steve A; Dantas, Bernardo M; Dantas, Ana Letícia A; Azeredo, Adelaide M G F
2003-08-01
The new dose limits recently adopted in Canada (and elsewhere in the world) have made it more difficult to detect some radionuclides by in vivo counting at the average dose limit of 20 mSv. This is particularly true for natural uranium. Two techniques have been developed by the Human Monitoring Laboratory to reduce the Minimum Detectable Activity (MDA) for the lung counting of this nuclide. The first technique, developed in collaboration with Cameco, is to either sum sequential counts of an individual or to sum spectra of a group of workers similarly occupationally exposed. This technique offers a reduction in the MDA of up to a factor of three. The second technique, developed in collaboration with CNEN, involves the summing of photopeaks within an individual spectrum and offers a reduction in the MDA of up to a factor of two. PMID:12938970
Sums of hermitian squares and the BMV conjecture
Klep, Igor
2007-01-01
Recently Lieb and Seiringer showed that the Bessis-Moussa-Villani conjecture from quantum physics can be restated in the following purely algebraic way: The sum of all words in two positive semidefinite matrices where the number of each of the two letters is fixed is always a matrix with nonnegative trace. We show that this statement holds if the words are of length at most 13. This has previously been known only up to length 7. In our proof, we establish a connection to sums of hermitian squares of polynomials in noncommuting variables and to semidefinite programming. As a by-product we obtain an example of a real polynomial in two noncommuting variables having nonnegative trace on all symmetric matrices of the same size, yet not being a sum of hermitian squares and commutators.
Width of exotics from QCD sum rules : tetraquarks or molecules?
Su Houng Lee; Kenji Morita; Marina Nielsen
2008-10-21
We investigate the widths of the recently observed charmonium like resonances X(3872), Z(4430) and Z_2(4250) using QCD sum rules. Extending previous analyses regarding these states as diquark-antiquark states or molecules of D mesons, we introduce the Breit-Wigner function in the pole term. We find that introducing the width increases the mass at small Borel window region. Using the OPE up to dimension eight, we find that the sum rules based on interpolating current with molecular components give a stable Borel curve from which both the masses and widths of these resonances can be well obtained. Thus the QCD sum rule approach strongly favors the molecular description of these states.
{theta}{sup ++} from the QCD sum rule
Nishikawa, Tetsuo; Kanada-En'Yo, Yoshiko; Morimatsu, Osamu; Kondo, Yoshihiko
2005-01-01
We study the pentaquark uudds with J=3/2 and I=1 ({theta}{sup ++}) in the QCD sum rule approach. We derive the QCD sum rules for positive and negative parity states of the pentaquark. The QCD sum rule predicts that there exists {theta}{sup ++} with negative parity and its mass is 1.5{approx}1.6 GeV. The negative parity {theta}{sup ++} can be extremely narrow, since it lies much below the {delta}K threshold and the decay into NK state is strongly suppressed due to the D-wave centrifugal barrier. Also, the possibility of the existence of the {theta}{sup ++} with positive parity is not excluded. Although it nearly degenerates with the negative parity state, it may be broader than the negative parity state.
Grappling with Weight Cutting. The Wisconsin Wrestling Minimum Weight Project.
ERIC Educational Resources Information Center
Oppliger, Robert A.; And Others
1995-01-01
In response to a new state rule, the Wisconsin Minimum Weight Project curtails weight cutting among high school wrestlers. The project uses skinfold testing to determine a minimum competitive weight and nutrition education to help the wrestler diet safety. It serves as a model for other states and other sports. (Author/SM)
MIMO radar waveform design with peak and sum power constraints
NASA Astrophysics Data System (ADS)
Arulraj, Merline; Jeyaraman, Thiruvengadam S.
2013-12-01
Optimal power allocation for multiple-input multiple-output radar waveform design subject to combined peak and sum power constraints using two different criteria is addressed in this paper. The first one is by maximizing the mutual information between the random target impulse response and the reflected waveforms, and the second one is by minimizing the mean square error in estimating the target impulse response. It is assumed that the radar transmitter has knowledge of the target's second-order statistics. Conventionally, the power is allocated to transmit antennas based on the sum power constraint at the transmitter. However, the wide power variations across the transmit antenna pose a severe constraint on the dynamic range and peak power of the power amplifier at each antenna. In practice, each antenna has the same absolute peak power limitation. So it is desirable to consider the peak power constraint on the transmit antennas. A generalized constraint that jointly meets both the peak power constraint and the average sum power constraint to bound the dynamic range of the power amplifier at each transmit antenna is proposed recently. The optimal power allocation using the concept of waterfilling, based on the sum power constraint, is the special case of p = 1. The optimal solution for maximizing the mutual information and minimizing the mean square error is obtained through the Karush-Kuhn-Tucker (KKT) approach, and the numerical solutions are found through a nested Newton-type algorithm. The simulation results show that the detection performance of the system with both sum and peak power constraints gives better detection performance than considering only the sum power constraint at low signal-to-noise ratio.
Bosomworth, N. John
2012-01-01
Abstract Objective To explore the reasons why long-term weight loss is seldom achieved and to evaluate the consequences of various weight trajectories, including stability, loss, and gain. Quality of evidence Studies evaluating population weight metrics were mainly observational. Level I evidence was available to evaluate the influence of weight interventions on mortality and quality of life. Main message Sustained weight loss is achieved by a small percentage of those intending to lose weight. Mortality is lowest in the high-normal and overweight range. The safest body-size trajectory is stable weight with optimization of physical and metabolic fitness. With weight loss there is evidence for lower mortality in those with obesity-related comorbidities. There is also evidence for improved health-related quality of life in obese individuals who lose weight. Weight loss in the healthy obese, however, is associated with increased mortality. Conclusion Weight loss is advisable only for those with obesity-related comorbidities. Healthy obese people wishing to lose weight should be informed that there might be associated risks. A strategy that leads to a stable body mass index with optimized physical and metabolic fitness at any size is the safest weight intervention option. PMID:22586192
Digital Video 1 DIGITAL VIDEO, LEARNING STYLES AND STUDENT UNDERSTANDING
Larkin, Teresa L.
Digital Video 1 DIGITAL VIDEO, LEARNING STYLES AND STUDENT UNDERSTANDING Digital Video, Learning University in 1997. Her doctoral work involved the assessment of and interactive digital video technique #12;Digital Video 2 teachers, particularly those teachers whose background does not include
COE589: Digital Forensics Research in Digital Forensics
Almulhem, Ahmad
COE589: Digital Forensics Research in Digital Forensics Dr. Ahmad Almulhem KFUPM - Spring 2013 (T Forensics · Future Research in Digital Forensics · Re-Visit to Course Syllabus COE589 - Ahmad Almulhem 2 #12 hourglass model #12;Research in Digital Forensics · Digital forensics is largely practitioner-driven field
Sum rules of four-neutrino mixing in matter
He Zhang
2006-06-04
Assuming the existence of one light sterile neutrino, we investigate the neutrino flavor mixing matrix in matter. Sum rules between the mixing parameters in vacuum and their counterparts in matter are derived. By using these new sum rules, we obtain the simple but exact expressions of the effective flavor mixing matrix in matter in terms of neutrino masses and the mixing parameters in vacuum. The rephasing invariants, sides of unitarity quadrangles and oscillation probabilities in matter are also achieved. Our model-independent results will be very helpful for analyzing flavor mixing and CP violation in the future long-baseline neutrino oscillation experiments.
Probing chiral restoration with ?-meson melting through sum rules
NASA Astrophysics Data System (ADS)
Hohler, Paul M.; Rapp, Ralf
2014-09-01
We investigate whether the rho-meson melting scenario is compatible with chiral symmetry restoration utilizing a comprehensive evaluation of the QCD and Weinberg sum rules at finite temperature. As input to this analysis, in-medium vector spectral functions which describe dilepton data from ultra-relativistic heavy-ion collisions are used along with temperature dependent condensates from lattice calculations, when available, or approximated by a hadron resonance gas. The combined deployment of QCD and Weinberg sum rules turns out to be rather stringent in constructing axialvector spectral functions consistent with (partial) chiral restoration.
Generic implementations of parallel prefix sums and its applications
Huang, Tao
2009-05-15
OF PARALLEL PREFIX SUMS AND THEIR APPLICATIONS A Thesis by TAO HUANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2007 Major Subject: Computer Science... GENERIC IMPLEMENTATION OF PARALLEL PREFIX SUMS AND THEIR APPLICATIONS A Thesis by TAO HUANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by...
Scalar-Meson - Baryon Coupling Constants in QCD Sum Rules
G. Erkol; M. Oka; Th. A. Rijken; R. G. E. Timmermans
2006-03-23
The external-field QCD Sum Rules method is used to evaluate the coupling constants of the light-isoscalar scalar meson (``\\sigma'' or \\epsilon) to the \\Lambda, \\Sigma, and \\Xi baryons. It is shown that these coupling constants as calculated from QCD Sum Rules are consistent with SU(3)-flavor relations, which leads to a determination of the F/(F+D) ratio of the scalar octet assuming ideal mixing: we find \\alpha_s \\equiv F/(F+D)=0.55. The coupling constants with SU(3) breaking effects are also discussed.
Scalar-Meson - Baryon Coupling Constants in QCD Sum Rules
Erkol, G; Rijken, T A; Timmermans, R G E; Rijken, Th. A.
2006-01-01
The external-field QCD Sum Rules method is used to evaluate the coupling constants of the light-isoscalar scalar meson (``\\sigma'' or \\epsilon) to the \\Lambda, \\Sigma, and \\Xi baryons. It is shown that these coupling constants as calculated from QCD Sum Rules are consistent with SU(3)-flavor relations, which leads to a determination of the F/(F+D) ratio of the scalar octet assuming ideal mixing: we find \\alpha_s \\equiv F/(F+D)=0.55. The coupling constants with SU(3) breaking effects are also discussed.
Sum Rules for Hadron Photoproduction on Hadrons and Photon
NASA Astrophysics Data System (ADS)
Bartos, E.; Dubnicka, S.; Dubnickový, A. Z.; Kuraev, E. A.
Sum rules are derived relating mean-squared charge radii in the case of pseudoscalar meson, Dirac mean-squared radii and anomalous magnetic moments in the case of (1/2)+ baryon, and finally sum of ratios of the fourth power of quark charges to the squared quark masses in the case of photon, with convergent integrals over the hadron photoproduction total cross-sections on pseudoscalar mesons, octet baryons and over gg - 2 jets cross-section, respectively. As a byproduct, chains of inequalities for corresponding total photoproduction cross-sections on meson and baryons in finite energy region, to be valid on an average, are also derived.
QCD sum rules study of meson-baryon sigma terms
NASA Astrophysics Data System (ADS)
Erkol, Güray; Oka, Makoto; Turan, Gürsevil
2008-11-01
The pion-baryon sigma terms and the strange-quark condensates of the octet and the decuplet baryons are calculated by employing the method of QCD sum rules. We evaluate the vacuum-to-vacuum transition matrix elements of two baryon interpolating fields in an external isoscalar-scalar field and use a Monte Carlo-based approach to systematically analyze the sum rules and the uncertainties in the results. We extract the ratios of the sigma terms, which have rather high accuracy and minimal dependence on QCD parameters. We discuss the sources of uncertainties and comment on possible strangeness content of the nucleon and the Delta.
Scalar-meson baryon coupling constants in QCD sum rules
NASA Astrophysics Data System (ADS)
Erkol, G.; Timmermans, R. G. E.; Oka, M.; Rijken, Th. A.
2006-04-01
The external-field QCD sum rules method is used to evaluate the coupling constants of the light isoscalar-scalar meson (“?” or ?) to the ?,?, and ? baryons. It is shown that these coupling constants as calculated from QCD sum rules are consistent with SU(3) flavor relations, which leads to a determination of the F/(F+D) ratio of the scalar octet assuming ideal mixing: we find ?s?F/(F+D)=0.55. The coupling constants with SU(3) breaking effects are also discussed.
QCD Sum Rules study of meson-baryon sigma terms
Erkol, G; Turan, G
2008-01-01
The pion-baryon sigma terms and the strange-quark condensates of the octet and the decuplet baryons are calculated by employing the method of quantum chromodynamics (QCD) sum rules. We evaluate the vacuum-to-vacuum transition matrix elements of two baryon interpolating fields in an external isoscalar-scalar field and use a Monte Carlo-based approach to systematically analyze the sum rules and the uncertainties in the results. We extract the ratios of the sigma terms, which have rather high accuracy and minimal dependence on QCD parameters. We discuss the sources of uncertainties and comment on possible strangeness content of the nucleon and the Delta.
QCD Sum Rules study of meson-baryon sigma terms
G. Erkol; M. Oka; G. Turan
2008-10-14
The pion-baryon sigma terms and the strange-quark condensates of the octet and the decuplet baryons are calculated by employing the method of quantum chromodynamics (QCD) sum rules. We evaluate the vacuum-to-vacuum transition matrix elements of two baryon interpolating fields in an external isoscalar-scalar field and use a Monte Carlo-based approach to systematically analyze the sum rules and the uncertainties in the results. We extract the ratios of the sigma terms, which have rather high accuracy and minimal dependence on QCD parameters. We discuss the sources of uncertainties and comment on possible strangeness content of the nucleon and the Delta.
Multiple summing operators on C(K) spaces
NASA Astrophysics Data System (ADS)
Pérez-García, David; Villanueva, Ignacio
2004-04-01
In this paper, we characterize, for 1? psumming multilinear operators on the product of C(K) spaces in terms of their representing polymeasures. As consequences, we obtain a new characterization of ( p, 1)-summing linear operators on C(K) in terms of their representing measures and a new multilinear characterization of L ? spaces. We also solve a problem stated by M.S. Ramanujan and E. Schock, improve a result of H. P. Rosenthal and S. J. Szarek, and give new results about polymeasures.
Vector mesons at finite temperature and QCD sum rules
Kwon, Youngshin; Weise, Wolfram; Sasaki, Chihiro
2010-06-15
Finite energy sum rules for vector and axial-vector currents are derived in a thermal medium to provide constraints for the spectral behavior of rho and a{sub 1} mesons at nonvanishing temperature and hence to study the tendency toward chiral symmetry restoration. The parity-mixing ansatz for the rho and a{sub 1} spectra, including finite widths, is investigated as a function of temperature. Characteristic differences between vector and axial-vector channels are discussed with regard to the implementation of the chiral-symmetry-breaking scale, 4pi times the pion decay constant, in the sum-rule approach.
Depth-weighted, mean soil permeability in Kansas
Juracek, Kyle E.
2000-01-01
This digital spatial data set provides information on the magnitude and spatial pattern of depth-weighted, mean soil permeability throughout the State of Kansas. The data set was assembled using 1:24,000-scale cartographic and attribute information on the spatial distribution and characteristics of Kansas soils. The data set is in grid (raster) format with a grid-cell size of 10,000 square meters.
Distracted Eating and Weight Gain
MedlinePLUS Videos and Cool Tools
... distraction can lead to weight gain. Related MedlinePlus Health Topics Nutrition Weight Control About MedlinePlus Site Map ... Rockville Pike, Bethesda, MD 20894 U.S. Department of Health and Human Services National Institutes of Health Page ...
Capacity and Complexity Trade-offs in MIMO Analog–Digital Combining Systems
Xin Zhou; Jack H. Winters; Patrick C. F. Eggers; Persefoni Kyritsi
2010-01-01
Analog–digital combining is an alternative solution to decrease the hardware complexity of an all-digital combining system.\\u000a We analyze the analog weights from the perspectives of maximizing analog signal-to-noise ratio (SNR) and effective channel\\u000a capacity $${(\\\\tilde{C})}$$. We propose simple sub-optimal algorithms to calculate receive analog weights in both open loop (OL) and closed loop (CL)\\u000a systems, and compare the proposed schemes
Informedia Digital Video Library
Michael G. Christel; Takeo Kanade; M. Mauldin; Raj Reddy; Marvin A. Sirbu; Scott M. Stevens; Howard D. Wactlar
1995-01-01
The Informedia Digital Video Library Project is developing new technologies for creating full-content search and retrieval digital video libraries. Working in collaboration with WQED Pittsburgh, the project is creating a testbed that will enable K-12 students to access, explore, and retrieve science and mathematics materials from the digital video library. The library will initially contain 1,000 hours of video from
Abstracting Digital Movies Automatically
Reihe Informatik S. Pfeioeer; R. Lienhart; S. Fischer Und W. Eoeelsberg
1996-01-01
ing Digital Movies AutomaticallyS. Pfeioeer, R. Lienhart, S. Fischer und W. EoeelsbergUniversit#t MannheimPraktische Informatik IVL 15, 16D-68131 MannheimAbstracting Digital Movies AutomaticallySilvia Pfeioeer, Rainer Lienhart, Stephan Fischer andWolfgang EoeelsbergPraktische Informatik IVUniversity of MannheimD-68131 Mannheimpfeiffer@pi4.informatik.uni-mannheim.deAbstractLarge video on demand databases consisting of thousands of digital moviesare not easy to handle: the...
Jinhee Chun; Matias Korman; Martin Nöllenburg; Takeshi Tokuyama
2008-01-01
Given a fixed origin o in the d-dimensional grid, we give a novel definition of digital rays dig(op) from o to each grid point p. Each digital ray dig(op) approximates the Euclidean line segment op between o and p. The set of all digital rays satisfies a set of axioms analogous to the Euclidean axioms. We measure the approximation quality
Goy, Alexandre S; Psaltis, Demetri
2012-09-24
We demonstrate experimentally a scanning confocal microscopy technique based on digital holography. The method relies on digital holographic recording of the scanned spot. The data collected in this way contains all the necessary information to digitally produce three-dimensional images. Several methods to treat the data are presented. Examples of reflection and transmission images of epithelial cells and mouse brain tissue are shown. PMID:23037422
Hypnotherapy in Weight Loss Treatment.
ERIC Educational Resources Information Center
Cochrane, Gordon; Friesen, John
1986-01-01
Investigated effects of hypnosis as a treatment for weight loss among women. The primary hypothesis that hypnosis is an effective treatment for weight loss was confirmed, but seven concomitant variables and the use of audiotapes were not significant contributors to weight loss. (Author/ABB)
Successful habits of weight losers
Technology Transfer Automated Retrieval System (TEKTRAN)
Despite the availability of the US Dietary Guidelines for Americans, the prevalence of obesity in adults has increased by 200% since 1980. Although few people have lost weight and maintained weight loss long term, some have and are tracked by the National Weight Control Registry. Results from these ...
Weight Training for Wheelchair Sports.
ERIC Educational Resources Information Center
Practical Pointers, 1978
1978-01-01
The article examines weight lifting training procedures for persons involved in wheelchair sports. Popular myths about weight training are countered, and guidelines for a safe and sound weight or resistance training program are given. Diagrams and descriptions follow for specific weightlifting activities: regular or standing press, military press,…
MINIMUM WEIGHT PATHS TIMEDEPENDENT NETWORKS
Orda, Ariel
MINIMUM WEIGHT PATHS in TIMEDEPENDENT NETWORKS Ariel Orda Raphael Rom Department of Electrical) ABSTRACT We investigate the minimum weight path problem in networks whose link weights and link delays are both functions of time. We demonstrate that in general there exist cases in which no finite path
February 1990 UNITARY LOWEST WEIGHT
Scalise, Randall J.
PSU/TH/62 February 1990 UNITARY LOWEST WEIGHT REPRESENTATIONS OF THE NONÂCOMPACT SUPERGROUP OSp(2m of the unitary lowest weight representations of the nonÂcompact supergroup OSp(2m \\Lambda =2n) with the even) \\Theta USp(2n) decomposition of the lowest weight representations of OSp(2m \\Lambda =2n). The partic
Exploring digital professionalism.
Ellaway, Rachel H; Coral, Janet; Topps, David; Topps, Maureen
2015-09-01
The widespread use of digital media (both computing devices and the services they access) has blurred the boundaries between our personal and professional lives. Contemporary students are the last to remember a time before the widespread use of the Internet and they will be the first to practice in a largely e-health environment. This article explores concepts of digital professionalism and their place in contemporary medical education, and proposes a series of principles of digital professionalism to guide teaching, learning and practice in the healthcare professions. Despite the many risks and fears surrounding their use, digital media are not an intrinsic threat to medical professionalism. Professionals should maintain the capacity for deliberate, ethical, and accountable practice when using digital media. The authors describe a digital professionalism framework structured around concepts of proficiency, reputation, and responsibility. Digital professionalism can be integrated into medical education using strategies based on awareness, alignment, assessment, and accountability. These principles of digital professionalism provide a way for medical students and medical practitioners to embrace the positive aspects of digital media use while being mindful and deliberate in its use to avoid or minimize any negative consequences. PMID:26030375
Digital security technology simplified.
Scaglione, Bernard J
2007-01-01
Digital security technology is making great strides in replacing analog and other traditional security systems including CCTV card access, personal identification and alarm monitoring applications. Like any new technology, the author says, it is important to understand its benefits and limitations before purchasing and installing, to ensure its proper operation and effectiveness. This article is a primer for security directors on how digital technology works. It provides an understanding of the key components which make up the foundation for digital security systems, focusing on three key aspects of the digital security world: the security network, IP cameras and IP recorders. PMID:17907609
NASA Technical Reports Server (NTRS)
Batson, R. M.; Kozak, R. C.; Isbell, Nancy K.
1991-01-01
All available synoptic maps of the solid-surface bodies of the Solar System were digitized for presentation in the planned Atlas of the Solar System by Greeley and Batson. Since the last report (Batson et al., 1990), preliminary Uranian satellite maps were replaced with improved versions, Galilean satellite geology was simplified and digitized, structure was added to many maps, and the maps were converted to a standard format, with corresponding standing colors for the mapped units. Following these changes, the maps were re-reviewed by their authors and are now undergoing final editing before preparation for publication. In some cases (for Mercury, Venus, and Mars), more detailed maps were digitized and then simplified for the Atlas. Other detailed maps are planned to be digitized in the coming year for the Moon and the Galilean satellites. For most of the remaining bodies such as the Uranian satellites, the current digitized versions contain virtually all the detail that can be mapped given the available data; those versions will be unchanged for the Atlas. These digital geologic maps are archived at the digital scale of 1/16 degree/ pixel, in sinusoidal format. The availability of geology of the Solar System in a digital database will facilitate comparisons and integration with other data: digitized lunar geologic maps have already been used in a comparison with Galileo SSI observations of the Moon.
FPGA IMPLEMENTATION OF DIGITAL FILTERS
Chi-Jui Chou; Satish Mohanakrishnan; Joseph B. Evans
1993-01-01
Digital filtering algorithms are most commonly implemented using general purpose digital signal processing chips for audio applications, or special purpose digital filtering chips and appli- cation-specific integrated circuits (ASICs) for higher rates. This paper describes an approach to the implementation of digital fil- ter algorithms based on field programmable gate arrays (FPGAs). The advantages of the FPGA approach to digital
Digital In, Digital Out: Digital Editing with Firewire.
ERIC Educational Resources Information Center
Doyle, Bob; Sauer, Jeff
1997-01-01
Reviews linear and nonlinear digital video (DV) editing equipment and software, using the IEEE 1394 (FireWire) connector. Includes a chart listing specifications and rating eight DV editing systems, reviews two DV still-photo cameras, and previews beta DV products. (PEN)
Debunking the "Digital Native": Beyond Digital Apartheid, towards Digital Democracy
ERIC Educational Resources Information Center
Brown, C.; Czerniewicz, L.
2010-01-01
This paper interrogates the currently pervasive discourse of the "net generation" finding the concept of the "digital native" especially problematic, both empirically and conceptually. We draw on a research project of South African higher education students' access to and use of Information and Communication Technologies (ICTs) to show that age is…
Physiological adaptations to weight loss and factors favouring weight regain.
Greenway, F L
2015-08-01
Obesity is a major global health problem and predisposes individuals to several comorbidities that can affect life expectancy. Interventions based on lifestyle modification (for example, improved diet and exercise) are integral components in the management of obesity. However, although weight loss can be achieved through dietary restriction and/or increased physical activity, over the long term many individuals regain weight. The aim of this article is to review the research into the processes and mechanisms that underpin weight regain after weight loss and comment on future strategies to address them. Maintenance of body weight is regulated by the interaction of a number of processes, encompassing homoeostatic, environmental and behavioural factors. In homoeostatic regulation, the hypothalamus has a central role in integrating signals regarding food intake, energy balance and body weight, while an 'obesogenic' environment and behavioural patterns exert effects on the amount and type of food intake and physical activity. The roles of other environmental factors are also now being considered, including sleep debt and iatrogenic effects of medications, many of which warrant further investigation. Unfortunately, physiological adaptations to weight loss favour weight regain. These changes include perturbations in the levels of circulating appetite-related hormones and energy homoeostasis, in addition to alterations in nutrient metabolism and subjective appetite. To maintain weight loss, individuals must adhere to behaviours that counteract physiological adaptations and other factors favouring weight regain. It is difficult to overcome physiology with behaviour. Weight loss medications and surgery change the physiology of body weight regulation and are the best chance for long-term success. An increased understanding of the physiology of weight loss and regain will underpin the development of future strategies to support overweight and obese individuals in their efforts to achieve and maintain weight loss. PMID:25896063
Implementation of superconducting synapses into a neuron-based analog-to-digital converter
Yoshinao Mizugaki; Koji Nakajima; Yasuji Sawada; Tsutomu Yamashita
1994-01-01
A superconducting synapse circuit, which allows digitally variable synaptic weights, is presented. Each bit of the synapse circuit consists of 2m (m=0, 1, 2,...) double-junction SQUIDs (superconducting quantum interference devices). Numerical simulation shows that the output current of the circuit can be changed digitally by switching the bias currents. To demonstrate this ability of the synapse experimentally, a superconducting neural
Digitized two-parameter spectrometer for neutron-gamma mixed field
Matej, Z.; Cvachovec, J.; Prenosil, V.; Cvachovec, F.; Zaritski, S.
2011-07-01
This paper shows the results of digital processing of output pulses from combined photon-neutron detector using a commercially available digitizer ACQUIRIS DP 210. The advantage of digital processing is reduction of the apparatus in weight and size, acceleration of measurement, and increased resistance to pile-up of pulses. The neutron and photon spectrum of radionuclide source {sup 252}Cf is presented. (authors)
Low complexity hybrid analog\\/digital phased array for ad-hoc networks
Srinivasa Yasasvy Sateesh Bhamidipati; Robert F. Kubichek
2012-01-01
This paper investigates a hybrid analog\\/digital beam former (ADBF). Traditional analog beam formers (ABF) steer a single beam using a single transceiver, power splitter\\/combiner, and electronically controlled analog phase shifters. In contrast modern digital beam formed arrays (DBF) or ‘smart antennas’ use separate transceiver chains, A\\/D and D\\/A converters, and DSPs. This enables direct digital control of array weights to
S. C. Chan; K. M. Tsui; K. S. Yeung; T. I. Yuk
2007-01-01
This paper studies the design, signal round-off noise, and complexity optimization of a new digital intermediate frequency (IF) architecture for a software radio receiver (SRR). The IF under study consists of digital filters with fixed coefficients, except for a limited number of multipliers required in the Farrow-based sampling rate converter (SRC). The fixed-coefficient filters can be implemented efficiently using sum-of-power-of-two
SYSTOLIC VOLUME OF HYPERBOLIC MANIFOLDS AND CONNECTED SUMS OF MANIFOLDS
Sabourau, StÃ©phane
SYSTOLIC VOLUME OF HYPERBOLIC MANIFOLDS AND CONNECTED SUMS OF MANIFOLDS STÂ´EPHANE SABOURAU Abstract. The systolic volume of a closed n-manifold M is defined as the optimal constant (M) satisfying the inequality vol(M) (M) sys(M)n between the volume and the systole of every metric on M. First, we show
Moveo ergo sum Enchanted Looms: Conscious Networks in Brains and
Kreiman, Gabriel
one of the most fascinating and chal- lenging problems in neuroscience: consciousness. The authorMoveo ergo sum Enchanted Looms: Conscious Networks in Brains and Computers (2000) Rodney Cotterill 91125, USA What is it that makes us conscious? Which animal species display this phenomenon and which
Heavy flavor baryon spectra via QCD sum rules
Zhang, Jian-Rong
2009-01-01
In this talk, we give a short review of our recent works [Phys. Rev. D {\\bf 77}, 094002 (2008); {\\bf 78}, 094007 (2008); {\\bf 78}, 094015 (2008); Phys. Lett. B {\\bf 674}, 28 (2009)] on studying the singly, doubly, and triply heavy baryon spectra from QCD sum rules.
Finite Energy Sum Rules with Legendre Polynomial Kernels
J. Bordes; J. A. Peñarrocha
2015-09-05
In this note we report about a method to deal with finite energy sum rules. With a reasonable knowledge of the main resonances of the spectrum, the method guarantees that we can find a nice duality matching between the low energy hadronic data and asymptotic QCD at high energies.
Finite Energy Sum Rules with Legendre Polynomial Kernels
Bordes, J
2015-01-01
In this note we report about a method to deal with finite energy sum rules. With a reasonable knowledge of the main resonances of the spectrum, the method guarantees that we can find a nice duality matching between the low energy hadronic data and asymptotic QCD at high energies.
Computing Partial Sums in Multidimensional Arrays (Detailed Abstract)
Chazelle, Bernard
Rosenberg Department of Computer Science Princeton University 1 Introduction The central theme of this paper;n(logn=loglogn)d , for any xed dimension d (Chazelle 8]). Regarding static one-dimensional partial-sum, Yao proved that if m of Tarjan 16] con- cerning the o -line evaluation of functions de ned over the paths of a tree. As in 16
Inequalities for frequency-moment sum rules of electron liquids
NASA Technical Reports Server (NTRS)
Iwamoto, N.
1986-01-01
The relations between the various frequency-moment sum rules of electron liquids, which include even-power moments, are systematically examined by using the Cauchy-Schwarz and Hoelder inequalities. A relation involving the isothermal sound velocity and the kinetic and potential energies is obtained from one of the inequalities in the long-wavelength limit, and is generalized to arbitrary spatial dimensions.
On sums of two coprime k -th powers
Werner Georg Nowak
1989-01-01
Under the assumption of the Riemann Hypothesis, an asymptotic formula with a sharp error term is established for ?n?x ?k(n), where ?k(n) denotes the number of ways to writen as a sum of twok-th powers of coprime positive integers (k=3).
A COMPARISON INEQUALITY FOR SUMS OF INDEPENDENT RANDOM VARIABLES*
Montgomery-Smith, Stephen
A COMPARISON INEQUALITY FOR SUMS OF INDEPENDENT RANDOM VARIABLES* STEPHEN random variables in terms of those of independent identi- cally distributed random variables. More precisely, let X1, . .,.Xn be independent Banach-valued random variables. Let I be a ran- dom
Self Modifying Cartesian Genetic Programming: Fibonacci, Squares, Regression and Summing
Fernandez, Thomas
the subsequent genetic expression [1, 2]. The concept of self-modification can be a unifying way of looking that by utilizing self-modification opera- tions within an existing computational method (a form of geneticSelf Modifying Cartesian Genetic Programming: Fibonacci, Squares, Regression and Summing Simon
On Stirling numbers and Euler sums Victor Adamchik
Adamchik, Victor
On Stirling numbers and Euler sums Victor Adamchik Wolfram Research Inc., 100 Trade Center Dr of Stirling numbers of the first kind for nonÂinteger values of their arguments. We discuss the analytic representations of Stirling numbers through harmonic numbers, the generalized hyÂ pergeometric function
On Stirling numbers and Euler sums Victor Adamchik
Adamchik, Victor
On Stirling numbers and Euler sums Victor Adamchik Wolfram Research Inc., 100 Trade Center Dr of Stirling numbers of the rst kind for non-integer values of their arguments. We discuss the analytic representations of Stirling numbers through harmonic numbers, the generalized hy- pergeometric function
Exponential Sums with Catalan Numbers Moubariz Z. Garaev
Shparlinski, Igor
. As in [2, 3], our treatment of J (L, N; ) is based on exponential sums. Thus, we start by recalling=L+1 e(acn). 3 #12;The identity (2) implies that I (L, N; ) = 1 p p-1 a=0 |Sa(L, N)|2 . (3) For any
Octet baryon magnetic moments in light cone QCD sum rules
T. M. Aliev; A. Ozpineci; M. Savci
2002-04-03
Octet baryon magnetic moments are calculated in framework of the light cone QCD sum rules. The analysis is carried for the general form of the interpolating currents for octet baryons. A comparison of our results on the magnetic moments of octet baryons with the predictions of other approaches and experimental data is presented.
PRIVACY AMPLIFICATION AND NON-MALLEABLE VIA CHARACTER SUMS
Dodis, Yevgeniy
PRIVACY AMPLIFICATION AND NON-MALLEABLE EXTRACTORS VIA CHARACTER SUMS YEVGENIY DODIS, XIN LI with an active adversary, Dodis and Wichs introduced the notion of a non-malleable extractor. A non-malleable. For a non-malleable extractor nmExt, the output nmExt(x, y) should appear uniform given y as well as nm