Large Distance Modification of Newtonian Potential and Structure Formation in Universe

In this paper, we study the effects of super-light brane world perturbative modes on structure formation in our universe. As these modes modify the large distance behavior of Newtonian potential, they effect the clustering of a system of galaxies. So, we explicitly calculate the clustering of galaxies interacting through such a modified Newtonian potential. We use a suitable approximation for analyzing this system of galaxies, and discuss the validity of such approximations. We observe that such corrections also modify the virial theorem for such a system of galaxies.Comment: 13 pages, 3 captioned figure

Sex Trafficking Awareness Among Adolescents

Sex Trafficking is a growing concern for the United States of America. This research investigation identifies the level of awareness from a group of individuals about 14 to 18 years old, allowing for the improvement of prevention methods for younger populations. The data for this study reported an overall trend in which students had an insufficient understanding for sex trafficking and its occurrences. Student responses contained higher mean scores as the grade levels increased. The data supports the argument that students are not as aware as they may need to be; however, 10th grade students responded either “slightly agree” or “strongly agree” more frequently than the 9th, 11th, and 12th grade students, leading them to have higher averages. This group of students in particular deviated from the trend established by the other grade level; on average, 10th grade students had higher mean scores than the other grade levels. Survey results summarize a lack of awareness that may originate from ineffective, or nonexistent, awareness programs from the students’ middle schools. Individuals should be informed prior to their entrance into high school. The data followed a distribution in which students were becoming progressively more aware through each school year. During the developmental period between the ages of 11 and 15, individuals often seek closer relationships with perceived friends. Sex traffickers often take the form of a close friend, allowing for an an uninformed individual to put their trust in an potential trafficker

Memories of studying life in Emory University

<p>Gestational-age specific risks^{<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0155692#t004fn001" target="_blank">*</a>} of adverse perinatal outcomes comparing cesarean-section (130,808 infants) vs. vaginal (n = 232,812 infants) deliveries in twin pregnancies.</p

Differential thermal analysis for polymer materials

The objective was to design an equipment of low cost for differential thermal analysis of polymers. The DTA system designed depends on the interaction between an Amstrad PC and the measuring head via an appropriate digital-analogue (D/A) and analogue-digital (A/D) converter board. A new DTA head has been designed, the temperature of which is programmed from the computer and increases (decreases) linearly with time at the set rate via a relay. [Continues.

The top two Laplacian eigenfunctions of a ring species and two outlier subpopulations and its sparse version with only 300 most informative markers out of total 10,000 markers, where .

<p>The top two Laplacian eigenfunctions of a ring species and two outlier subpopulations and its sparse version with only 300 most informative markers out of total 10,000 markers, where .</p

The global population structure of population sample HGDP-CEPH.

<p>Summarized by: (a) the top two Principal Components; (b) the top two Laplacian eigenfunctions using all available 647,483 SNPs; and (c) the top two Sparse Laplacian eigenvectors using the top 1,000 most informative SNPs. Here the parameter is set to be .</p

libreta: Computerized Optimization and Code Synthesis for Electron Repulsion Integral Evaluation

A new library called libreta for the evaluation of electron repulsion integrals (ERIs) over segmented and contracted Gaussian functions is developed. Our libreta is optimized from three aspects: (1) The Obara–Saika, Dupuis–Rys–King, and McMurchie–Davidson method are all employed. The recurrence relations involved are optimized by tree-search for each combination of angular momenta, and in the best case, 50% of the intermediates can be eliminated to reduce the computational cost. (2) The optimized codes for recurrence relations are combined with different contraction orders, each of which is suitable for ERIs of different angular momenta and contraction patterns. In practice, libreta will determine and use the best scheme to evaluate each ERI. (3) libreta is also optimized at the coding level. For example, with common subexpression elimination and local memory access, the performance can be increased by about 6% and 20%, respectively. The performance was compared with libint2. For both popular segmented and contracted basis sets, libreta can be faster than libint2 by 7.2–912.0%. For basis sets of heavy elements that contain Gaussian basis functions of large contraction degrees, the performance can be increased 20–30 times. We also tested the performance of libreta in direct self-consistent field (SCF) calculations and compared it with NWChem. In most cases, the average time for one SCF iteration by libreta is less than NWChem by 144.2–495.9%. Finally, we discuss the origin of redundancies occurring in the recurrence relations and derive an upper bound of the least number of intermediates required to be calculated in a McMurchie–Davidson recurrence, which is confirmed by ours as well as previous authors’ results. We expect that libreta can become a useful tool for theoretical and computational chemists to develop their own algorithms rapidly

Summary of among the top 500 informative SNPs.

<p>Distribution of numbers of pairs among the most informative 500 SNPs identified by PCA without redundancy removed, Laplacian and Sparse Laplacian approachs for seven global continental population structure.</p

Prediction error percentages of PCA, Sparse LAP and LAP approaches of assigning individuals to their continental memberships.

<p>Prediction error percentages of PCA, Sparse LAP and LAP approaches of assigning individuals to their continental memberships.</p

The top 500 ancestral informative SNPs identified by sparse Laplacian approach.

<p>The top 100 SNPs are above the dashed red line with scores larger or equal than .</p