A Comparison Of Dietary Intakes Of Title Iii-C Participants On Home-Delivered Meal And Non-Meal Days

U okviru robotom potpomognutog protokola za dijagnozu autizma razvijen je modul za detekciju i praćenje proizvoljnog broja predmeta čije su boje poznate te prepoznavanje gesta u pokretima koje se tim predmetima izvode. Modul je prilagođen za izvođenje na humanoidnom robotu NAO u realnom vremenu. Praćenje predmeta se izvodi na robusan način koji dopušta snažnu interakciju između predmeta slične boje bez da se time gubi identitet pojedinog predmeta, te se pokazalo pouzdanim u realnim uvjetima izvođenja zadatka i u testovima praćenja. Prepoznavanje geste s korisničke je strane intuitivno i kvalitetno prepoznaje pokrete koji se koriste pri izvođenju protokola za dijagnozu.As part of a robot-assisted autism diagnostic protocol, a module has been developed for the detection and tracking of an arbitrary number of objects of known color, as well as recognition of gestures based on the movements made by the objects. The module is built for real-time execution on the NAO humanoid robot. Object tracking is done using a robust method allowing for strong interaction between objects of a similar color without disrupting the tracking of any interacting object, and is shown to be reliable both in real-world conditions as well as in tracking tests. The module's gesture recognition capabilities are intuitive to use and provide quality recognition of all movements used in the diagnostic protocol

Theory of Stellar Oscillations

In recent years, astronomers have witnessed major progresses in the field of stellar physics. This was made possible thanks to the combination of a solid theoretical understanding of the phenomena of stellar pulsations and the availability of a tremendous amount of exquisite space-based asteroseismic data. In this context, this chapter reviews the basic theory of stellar pulsations, considering small, adiabatic perturbations to a static, spherically symmetric equilibrium. It starts with a brief discussion of the solar oscillation spectrum, followed by the setting of the theoretical problem, including the presentation of the equations of hydrodynamics, their perturbation, and a discussion of the functional form of the solutions. Emphasis is put on the physical properties of the different types of modes, in particular acoustic (p-) and gravity (g-) modes and their propagation cavities. The surface (f-) mode solutions are also discussed. While not attempting to be comprehensive, it is hoped that the summary presented in this chapter addresses the most important theoretical aspects that are required for a solid start in stellar pulsations research.Comment: Lecture presented at the IVth Azores International Advanced School in Space Sciences on "Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds" (arXiv:1709.00645), which took place in Horta, Azores Islands, Portugal in July 201

Quick Design Analysis for Improving Building Energy Performance

AbstractA building's overall energy performance may be understood as the variation of its energy balance and the extent to which additional heating or cooling energy is needed to maintain comfort. Different characteristics of a building impact the energy performance in ways that vary over time. Transmitted solar gain, for instance, might be an asset at one moment and a liability at another. Architects, designers, and builders often want to know how well a building can be expected to perform in this regard, and they are interested to know what improvements might be the most effective to reduce overall energy use. Many projects lack the budget required for an extensive energy analysis, which is a common approach for answering such questions, while often energy-efficiency guidelines do not address project specific performance issues related to the interactions of site, program and design.Quick analysis tools currently available tend to be inflexible and generic, and thus of limited use in giving design teams feedback about a specific design proposal. This paper presents a cost-effective analysis technique that assesses envelope and internal load characteristics (eg, transmitted solar gain, heat gain/loss of thermal mass, heat gain from equipment, etc) of a building design in terms of their relative benefit or liability to overall conditioning loads. Using data from the energy simulation of one design alternative, the tool presents overall performance of each building characteristic as well as a detailed visualization of performance over all 8760hours of a typical year. The cumulative ranking provides a prioritized list for overall building performance improvements, and the detailed data visualization suggests specific time periods on which the design team should focus

Discovering a Joomla Exploit for Possible Malware: Social Engineering and a PHP BASE64 GIF Exploit

his article discusses the importance of Joomla as a Content Management System that is used by 2.7% of the web and how a possible new malware exploit has been discovered. The PHP BASE64 malware exploit is a well-documented exploit of PHP but the implementation of this exploit as it relates to Joomla is a very ingenious method not previously used before, as far as the authors were able to discover. In this particularly case, PHP code is embedded in a GIF file to produce a very sophisticated and unique malware exploit to Joomla

Investigating the accuracy of parallel analysis in underextraction conditions: A monte carlo study

One of the most important decisions to make when performing an exploratory factor analysis regards the number of factors to retain. Parallel analysis is considered to be the best course of action in these circumstances as it consistently outperforms other factor extraction methods (Zwick & Velicer, 1986). Even so, parallel analysis requires further research and refinement to improve its accuracy. Characteristics such as factor loadings, correlations between factors, and number of variables per factor all have been shown to adversely impact the effectiveness of parallel analysis as a means of identifying the number of factors. Critically, even the choice of criteria on which to evaluate factors such as the eigenvalue at the 50th or 95th percentile can have deleterious effects on the number of factors extracted. One area of parallel analysis yet to be researched is the magnitude of the difference between the actual eigenvalue and the random data-based eigenvalue. Currently, even if the margin between the actual eigenvalue and the random data-based eigenvalue is nominal, the factor is considered to be meaningful. As such, it may behoove researchers to enforce a higher standard, such as a greater margin between the two eigenvalues than just an absolute difference. Accordingly, the purpose of this study will be to evaluate the efficacy of a 10 percent margin criterion as compared to an absolute margin. These margins will specifically be evaluated in conjunction with the 50th, 90th, 95th, and 99th percentile eigenvalue criteria on a population correlation matrix which engenders underextraction. Previous research (Matsumoto & Brown, 2017) explored the same conditions on a population correlation matrix designed to cause overextraction. They found that the most stringent standard (99th percentile eigenvalue plus 10 percent margin) was the most accurate. For the present study however, we hypothesize that the most accurate results will be obtained from a standard less stringent than the 99th percentile eigenvalue plus 10 percent margin. This research has important implications for the scientific and practical application of psychometrics

Sibling Position and Risk Attitudes: Is Being an Only Child Associated with a Person’s Risk Tolerance?

The influence of birth order on personality has been studied for several decades, but little research has been conducted on the association between sibling position and risk tolerance. The purpose of this study was to examine the relationship between being an only child and risk-taking attitudes. Data from the 2010 National Longitudinal Survey of Youth, 1979 sample was used to test the hypotheses that only children and first borns are similar, only children exhibit a lower risk tolerance when compared to those with siblings, and only children exhibit a lower risk tolerance when compared to those with siblings when first borns are removed and only borns are compared with later borns. Results did show that only children are similar to first borns in nearly every domain of risk tolerance considered. Furthermore, they do not exhibit dramatically different risk attitudes than those with siblings when the variables of sex, locus of control, and net worth are controlled

Effects of the Spin-Orbit and Tensor Interactions on the M1M1 and E2E2 Excitations in Light Nuclei

The effects of varying the spin-orbit and tensor components of a realistic interaction on $M1$ excitation rates and $B(E2)'s$ are studied on nuclei in the $0p$ and $1s-0d$ shells. Not only the total $M1$ but also the spin and orbital parts separately are studied. The single-particle energies are first calculated with the same interaction that is used between the valence nucleons. Later this stringent condition is relaxed somewhat and the $1s$ level is raised relative to $0d$. For nuclei up to $^{28}Si$, much better results i.e stronger $B(M1)$ rates are obtained by increasing the strength of the spin-orbit interaction relative to the free value. This is probably also true for $^{32}S$, but $^{36}Ar$ presents some difficulties. The effects of weakening the tensor interaction are also studied. On a more subtle level, the optimum spin-orbit interaction in the lower half of the $s-d$ shell, as far as $M1$ excitations are concerned, is substantially larger than the difference $E(J=3/2^+)_1-E(J=5/2^+)_1=5.2~MeV$ in $^{17}O$. A larger spin-orbit splitting is also needed to destroy the triaxiality in $^{22}Ne$. Also studied are how much $M1$ orbital and spin strength lies in an observable region and how much is buried in the grass at higher energies. It is noted that for many nuclei the sum $B(M1)_{orbital}+B(M1)_{spin}$ is very close to $B(M1)_{total}$, indicating that the summed cross terms are very small.Comment: 39 pages, revtex 3.

Theoretical analysis of the focusing of acoustic waves by two-dimensional sonic crystals

Motivated by a recent experiment on acoustic lenses, we perform numerical calculations based on a multiple scattering technique to investigate the focusing of acoustic waves with sonic crystals formed by rigid cylinders in air. The focusing effects for crystals of various shapes are examined. The dependance of the focusing length on the filling factor is also studied. It is observed that both the shape and filling factor play a crucial role in controlling the focusing. Furthermore, the robustness of the focusing against disorders is studied. The results show that the sensitivity of the focusing behavior depends on the strength of positional disorders. The theoretical results compare favorably with the experimental observations, reported by Cervera, et al. (Phys. Rev. Lett. 88, 023902 (2002)).Comment: 8 figure

Systematics of the Quadrupole-Quadrupole Interaction and Convergence Properties

Our main concern in this work is to show how higher shell admixtures affect the spectrum of a Q.Q interaction. We first review how, in the valence space, the familiar SU(3) result for the energy spectrum can be obtained using a coordinate space Q.Q interaction rather than the Elliott one which is symmetric in r and p. We then reemphasize that the Elliott spectrum goes as L(L+1) where L is the orbital angular momentum. While in many cases this is compatible with the rotational formula which involves I(I+1), where I is the total angular momentum, there are cases, e.g. odd-odd nuclei, where there is disagreement. Finally, we consider higher shell admixtures and devise a scheme so as to obtain results, with the Q.Q interaction, which converge as the model spaces are increased. We consider not only ground state rotational bands but also those that involve intruder states.Comment: 13 pages, Revtex, to appear in Annals of Physic

$p+^{4,6,8}He elastic scattering at intermediate energies

Using a relativistic nuclear optical potential consisting of a Lorentz scalar, $V_{s}$, and the time-like component of a four-vector potential, $V_{0}$, we calculate elastic scattering differential cross sections and polarizations for $p+^{4}$He at intermediate energies for which experimental data are available. We also calculate the differential cross sections and analyzing powers for $p+^{6,8}$He at intermediate energies and compare with the few available experimental data.Comment: 09 pages, 04 figure