cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Orbital order in NaTiO$_2$ : A first principles study
Creators: name: Dhariwal, Monika
name: Maitra, T.
name: Singh, Ishwar
name: Koley, S.
name: Taraphder, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The debate over the orbital order in layered triangular lattice system NaTiO$_2$ has been rekindled by the recent experiments of McQueen, et al. \cite{cava} on NaVO$_2$ ({\em Phys. Rev. Lett.} {\bf 101}, 166402 (2008)). In view of this, the nature of orbital ordering, in both high and low temperature states, is studied using an ab-initio electronic structure calculation. The orbital order observed in our calculations in the low temperature structure of NaTiO$_2$ is consistent with the predictions of McQueen, et. al. An LDA plus dynamical mean-field calculation shows considerable transfer of spectral weight from the Fermi level but no metal- insulator transition, confirming the poor metallic behaviour observed in transport measurements.
description: 6 pages, 6 figures
Entanglement Generation by Time Varying Refractive Index: Analogy with Cosmological Model
Creators: name: Moradi, Shahpoor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Generation of entanglement between modes of a electromagnetic fields by sudden change of the refractive index of a medium is considered. We use the analogy between the Fock-space formulation of pair creation caused by the contraction and expansion of the universe on one hand and the pair creation in time-dependent electric fields on the other hand. It is shown that entanglement between photons encodes information concerning the underlying refractive index of a medium.
description: 5 pages
Face Recognition Using Discrete Cosine Transform for Global and Local Features
Creators: name: Chadha, Aman R.
name: Vaidya, Pallavi P.
name: Roja, M. Mani
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Face Recognition using Discrete Cosine Transform (DCT) for Local and Global Features involves recognizing the corresponding face image from the database. The face image obtained from the user is cropped such that only the frontal face image is extracted, eliminating the background. The image is restricted to a size of 128 x 128 pixels. All images in the database are gray level images. DCT is applied to the entire image. This gives DCT coefficients, which are global features. Local features such as eyes, nose and mouth are also extracted and DCT is applied to these features. Depending upon the recognition rate obtained for each feature, they are given weightage and then combined. Both local and global features are used for comparison. By comparing the ranks for global and local features, the false acceptance rate for DCT can be minimized.
description: face recognition; biometrics; person identification; authentication; discrete cosine transform; DCT; global local features; Proceedings of the 2011 International Conference on Recent Advancements in Electrical, Electronics and Control Engineering (IConRAEeCE) IEEE Xplore: CFP1153R-ART; ISBN: 978-1-4577-2149-6
An Exploratory Study of Critical Factors Affecting the Efficiency of Sorting Techniques (Shell, Heap and Treap)
Creators: name: Folorunso, Olusegun
name: Vincent, Olufunke R.
name: Salako, Oluwatimilehin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: The efficiency of sorting techniques has a significant impact on the overall efficiency of a program. The efficiency of Shell, Heap and Treap sorting techniques in terms of both running time and memory usage was studied, experiments conducted and results subjected to factor analysis by SPSS. The study revealed the main factor affecting these sorting techniques was time taken to sort.
description: 10 pages
A universal approximate cross-validation criterion and its asymptotic distribution
Creators: name: Commenges, Daniel
name: Proust-Lima, Cécile
name: Samieri, Cécilia
name: Liquet, Benoit
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F99

description: A general framework is that the estimators of a distribution are obtained by minimizing a function (the estimating function) and they are assessed through another function (the assessment function). The estimating and assessment functions generally estimate risks. A classical case is that both functions estimate an information risk (specifically cross entropy); in that case Akaike information criterion (AIC) is relevant. In more general cases, the assessment risk can be estimated by leave-one-out crossvalidation. Since leave-one-out crossvalidation is computationally very demanding, an approximation formula can be very useful. A universal approximate crossvalidation criterion (UACV) for the leave-one-out crossvalidation is given. This criterion can be adapted to different types of estimators, including penalized likelihood and maximum a posteriori estimators, and of assessment risk functions, including information risk functions and continuous rank probability score (CRPS). This formula reduces to Takeuchi information criterion (TIC) when cross entropy is the risk for both estimation and assessment. The asymptotic distribution of UACV and of a difference of UACV is given. UACV can be used for comparing estimators of the distributions of ordered categorical data derived from threshold models and models based on continuous approximations. A simulation study and an analysis of real psychometric data are presented.
description: 23 pages, 2 figures
Memory in the Photon Statistics of Multilevel Quantum Systems
Creators: name: Caycedo-Soler, Felipe
name: Rodriguez, Ferney J.
name: Zumofen, Gert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The statistics of photons emitted by single multilevel systems is investigated with emphasis on the nonrenewal characteristics of the photon-arrival times. We consider the correlation between consecutive interphoton times and present closed form expressions for the corresponding multiple moment analysis. Based on the moments a memory measure is proposed which provides an easy way of gaging the non-renewal statistics. Monte-Carlo simulations demonstrate that the experimental verification of non-renewal statistics is feasible.
description: 5 pages, 3 figures
Emvolio Instrument test reports and The ARRIVE guidelines 2.0 - Author checklist.pdf,
Creators: name: Maity, Swastika
name: Aakriti, Jaya
name: Manandhar, Suman
name: Anchan, Sharad B
name: Bhat, Ashlesh
name: Shetty, Mayur U
name: Nayak, Yogendra
Publisher: name: figshare
Year: 2022
Subjects: Other biomedical and clinical sciences not elsewhere classified

description: This also includes the details (1) test reports of Emvolio, as per the regulatory compliences (WHO/PQS/E003/TS01.1) and (2) Reports of Internal testing.
 The file contains the ARRIVE2.0 Author Checklist for experiments carried out using rats.
Development and Deployment of Fixed Wireless Access in South West Nigeria: Performance and Evaluation
Creators: name: Adeniran, Oluwaranti
name: Philip, Achimugu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Fixed Wireless Access (FWA) involves the use of wireless technology to replace copper to connect subscribers to the telephone network. It is a variant of wireless broadband which provides an alternative in the so-called 'last mile' connectivity between the subscriber and the fixed telecommunications network. FWA could either be narrowband or broadband and it is predominantly deployed using the Code Division Multiple Access (CDMA) technology. In assessing the extent of development and deployment of FWA, the perspective of the operators and users was elicited primarily through the use of questionnaires. Issues like setup cost, tax, Government incentive, availability of infrastructure and manpower applied to the operators while on the users' part factors like quality of service, signal strength as well as call rate were considered. The South western zone of Nigeria is regarded as one of the most urbanized regions in the south of Sahara, this is not out of place considering the fact that Lagos which is the nation's commercial nerve centre and a mega-city is located within this region. The scope of this research covered this very lively part of the country. The relationship between the parameters or variables considered was established using an appropriate statistical method: The Regression analysis. In terms of users' preference, Global System of Mobile communication (GSM) was compared with FWA. Results were interpreted and suitable conclusions were drawn to wrap up a quite revealing work.
description: Submitted to Journal of Computer Science and Engineering, see http://sites.google.com/site/jcseuk/volume-7-issue-2-june-2011
Clustering and Bayesian network for image of faces classification
Creators: name: Jayech, Khlifia
name: Mahjoub, Mohamed Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In a content based image classification system, target images are sorted by feature similarities with respect to the query (CBIR). In this paper, we propose to use new approach combining distance tangent, k-means algorithm and Bayesian network for image classification. First, we use the technique of tangent distance to calculate several tangent spaces representing the same image. The objective is to reduce the error in the classification phase. Second, we cut the image in a whole of blocks. For each block, we compute a vector of descriptors. Then, we use K-means to cluster the low-level features including color and texture information to build a vector of labels for each image. Finally, we apply five variants of Bayesian networks classifiers (Naïve Bayes, Global Tree Augmented Naïve Bayes (GTAN), Global Forest Augmented Naïve Bayes (GFAN), Tree Augmented Naïve Bayes for each class (TAN), and Forest Augmented Naïve Bayes for each class (FAN) to classify the image of faces using the vector of labels. In order to validate the feasibility and effectively, we compare the results of GFAN to FAN and to the others classifiers (NB, GTAN, TAN). The results demonstrate FAN outperforms than GFAN, NB, GTAN and TAN in the overall classification accuracy.
description: 12 pages
Emvolio Study - The ARRIVE guidelines 2.0 - Author checklist.pdf, Instrument test reports
Creators: name: Maity, Swastika
name: Aakriti, Jaya
name: Manandhar, Suman
name: Anchan, Sharad B
name: Bhat, Ashlesh
name: Shetty, Mayur U
name: Nayak, Yogendra
Publisher: name: figshare
Year: 2022

description: The file contains the ARRIVE2.0 Author Checklist for experiments carried out using rats.
 This also includes the details (1) test reports of Emvolio, as per the regulatory compliences (WHO/PQS/E003/TS01.1) and (2) Reports of Internal testing.
A Wide-Field Near-Ir H2 2.122$μ$m line survey of the Braid Nebula Star Formation Region in Cygnus OB7
Creators: name: Khanzadyan, T.
name: Davis, C. J.
name: Aspin, C.
name: Froebrich, D.
name: Smith, M. D.
name: Magakian, T. Yu.
name: Movsessian, T.
name: Moriarty-Schieven, G. H.
name: Nikogossian, E. H.
name: Pyo, T. -S.
name: Beck, T. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Outflows and jets are the first signposts of ongoing star formation processes in any molecular cloud, yet their study in optical bands provides limited results due to the large extinction present. Near-infrared unbiased wide-field observations in the H2 1-0 S(1) line at 2.122μm alleviates the problem, enabling us to detect more outflows and trace them closer to their driving sources. Aims. As part of a large-scale multi-waveband study of ongoing star formation in the Braid Nebula Star Formation region, we focus on a one square degree region that includes Lynds Dark Nebula 1003 and 1004. Our goal is to find all of the near-infrared outflows, uncover their driving sources and estimate their evolutionary phase. Methods. We use near-infrared wide-field observations obtained with WFCAM on UKIRT, in conjunction with previously-published optical and archival MM data, to search for outflows and identify their driving sources; we subsequently use colour-colour analysis to determine the evolutionary phase of each source. Results. Within a one square degree field we have identified 37 complex MHOs, most of which are new. After combining our findings with other wide-field, multi-waveband observations of the same region we were able to discern 28 outflows and at least 18 protostars. Our analysis suggests that these protostars are younger and/or more energetic than those of the Taurus-Auriga region. The outflow data enable us to suggest connection between outflow ejection and repetitive FU Ori outburst events. We also find that star formation progresses from W to E across the investigated region.
Saturation of uncertainty relations for twisted acceleration-enlarged Newton-Hooke space-times
Creators: name: Daszkiewicz, Marcin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using Fock representation we construct states saturating uncertainty relations for twist-deformed acceleration-enlarged Newton-Hooke space-times.
description: 11 pages, no figures
Distillability of entanglement in accelerated frames
Creators: name: Moradi, Shahpoor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the entanglement distillability of bipartite mixed states of two modes of a free Dirac field as seen by two relatively accelerated parties. It is shown that there are states that will change from distillable into separable for a certain value of acceleration. We exemplify these criteria in the context of Werner states.
description: 6 pages, 1 figure
The threshold EM algorithm for parameter learning in bayesian network with incomplete data
Creators: name: Lamine, Fradj Ben
name: Kalti, Karim
name: Mahjoub, Mohamed Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Bayesian networks (BN) are used in a big range of applications but they have one issue concerning parameter learning. In real application, training data are always incomplete or some nodes are hidden. To deal with this problem many learning parameter algorithms are suggested foreground EM, Gibbs sampling and RBE algorithms. In order to limit the search space and escape from local maxima produced by executing EM algorithm, this paper presents a learning parameter algorithm that is a fusion of EM and RBE algorithms. This algorithm incorporates the range of a parameter into the EM algorithm. This range is calculated by the first step of RBE algorithm allowing a regularization of each parameter in bayesian network after the maximization step of the EM algorithm. The threshold EM algorithm is applied in brain tumor diagnosis and show some advantages and disadvantages over the EM algorithm.
description: 6 pages
The Impact of Information Technology in Nigeria's Banking Industry
Creators: name: Oluwatolani, Oluwagbemi
name: Joshua, Abah
name: Philip, Achimugu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Today, information technology (IT) has become a key element in economic development and a backbone of knowledge-based economies in terms of operations, quality delivery of services and productivity of services. Therefore, taking advantage of information technologies (IT) is an increasing challenge for developing countries. There is now growing evidence that Knowledge-driven innovation is a decisive factor in the competitiveness of nations, industries, organizations and firms. Organizations like the banking sector have benefited substantially from e-banking, which is one among the IT applications for strengthening the competitiveness. This paper presents the current trend in the application of IT in the banking industries in Nigeria and gives an insight into how quality banking has been enhanced via IT. The paper further reveals that the deployment of IT facilities in the Nigerian Banking industry has brought about fundamental changes in the content and quality of banking business in the country. This analysis and clarification of how Nigerian Banks have used IT to reengineer their operations is detailed through literature review and observation. Three categories of variables that relate to the use and implementation of information technology devices were considered in this paper. These include the nature and degree of adoption of innovative technologies; degree of utilization of the identified technologies; and the impact of the adoption of IT devices on the bank operations.
description: Submitted to Journal of Computer Science and Engineering, see http://sites.google.com/site/jcseuk/volume-7-issue-2-june-2011
Blindly detecting orbital modulations of jets from merging supermassive black holes
Creators: name: O'Shaughnessy, R.
name: Kaplan, D. L.
name: Sesana, A.
name: Kamble, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the last few years before merger, supermassive black hole binaries will rapidly inspiral and precess in a magnetic field imposed by a surrounding circumbinary disk. Multiple simulations suggest this relative motion will convert some of the local energy to a Poynting-dominated outflow, with a luminosity 10^{43} erg/s * (B/10^4 G)^2(M/10^8 Msun)^2 (v/0.4 c)^2, some of which may emerge as synchrotron emission at frequencies near 1 GHz where current and planned wide-field radio surveys will operate. On top of a secular increase in power on the gravitational wave inspiral timescale, orbital motion will produce significant, detectable modulations, both on orbital periods and (if black hole spins are not aligned with the binary's total angular momenta) spin-orbit precession timescales. Because the gravitational wave merger time increases rapidly with separation, we find vast numbers of these transients are ubiquitously predicted, unless explicitly ruled out (by low efficiency $ε$) or obscured (by accretion geometry f_{geo}). If the fraction of Poynting flux converted to radio emission times the fraction of lines of sight accessible $f_{geo}$ is sufficiently large (f_{geo} ε> 2\times 10^{-4} for a 1 year orbital period), at least one event is accessible to future blind surveys at a nominal 10^4 {deg}^2 with 0.5 mJy sensitivity. Our procedure generalizes to other flux-limited surveys designed to investigate EM signatures associated with many modulations produced by merging SMBH binaries.
description: Submitted to ApJ. v1 original submission; v2 minor changes in response to referee
An observational test of the Vainshtein mechanism
Creators: name: Hui, Lam
name: Nicolis, Alberto
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Modified gravity theories capable of genuine self-acceleration typically invoke a galileon scalar which mediates a long range force, but is screened by the Vainshtein mechanism on small scales. In such theories, non-relativistic stars carry the full scalar charge (proportional to their mass), while black holes carry none. Thus, for a galaxy free-falling in some external gravitational field, its central massive black hole is expected to lag behind the stars. To look for this effect, and to distinguish it from other astrophysical effects, one can correlate the gravitational pull from the surrounding structure with the offset between the stellar center and the black hole. The expected offset depends on the central density of the galaxy, and ranges up to ~0.1 kpc for small galaxies. The observed offset in M87 cannot be explained by this effect unless the scalar force is significantly stronger than gravity. We also discuss the systematic offset of compact objects from the galactic plane as another possible signature.
description: 4 pages
PROTOCOLO DE REVISÃO RÁPIDA SOBRE INTERVENÇÕES PARA AUMENTAR A ADESÃO À VACINA PEDIÁTRICA COVID- 19 NO BRASIL
Creators: name: Fontenelle Basílio da Silva, Narlene
name: Leite Macedo, Marcela
name: Yonekura, Tatiana
Publisher: name: Zenodo
Year: 2022
Subjects: COVID-19
Vacinação pediátrica
Revisão rápida

description: Protocolo de revisão rápida sobre intervenções para aumentar a adesão à vacina pediátrica COVID- 19 no Brasil. Elaborado como parte das atividades do Trabalho de Conclusão de Curso da Pós-Graduação Lato Sensu Vigilância e Cuidado em Saúde no Enfrentamento da Covid-19 e de Outras Doenças Virais – VigiEpidemia, ofertado pela Fiocruz Mato Grosso Do Sul. Equipe elaboradora: Narlene Fontenelle Basílio da Silva (discente), Marcela Leite Macedo (discente) e Tatiana Yonekura (tutora).
Symmetry-dependent phonon renormalization in monolayer MoS2 transistor
Creators: name: Chakraborty, Biswanath
name: Bera, Achintya
name: Muthu, D. V. S.
name: Bhowmick, Somnath
name: Waghmare, U. V.
name: Sood, A. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Strong electron-phonon interaction which limits electronic mobility of semiconductors can also have significant effects on phonon frequencies. The latter is the key to the use of Raman spectroscopy for nondestructive characterization of doping in graphene-based devices. Using in-situ Raman scattering from single layer MoS$_2$ electrochemically top-gated field effect transistor (FET), we show softening and broadening of A$_{1g}$ phonon with electron doping whereas the other Raman active E$_{2g}^{1}$ mode remains essentially inert. Confirming these results with first-principles density functional theory based calculations, we use group theoretical arguments to explain why A$_{1g}$ mode specifically exhibits a strong sensitivity to electron doping. Our work opens up the use of Raman spectroscopy in probing the level of doping in single layer MoS$_2$-based FETs, which have a high on-off ratio and are of enormous technological significance.
description: 5 pages, 3 figures
A hybrid bio-organic interface for neuronal photo-activation
Creators: name: Antognazza, Maria Rosa
name: Ghezzi, Diego
name: Maschio, Marco Dal
name: Lanzarini, Erica
name: Benfenati, Fabio
name: Lanzani, Guglielmo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Interfacing artificial functional materials and living neuronal tissues is at the forefront of bio-nano-technology. Attempts have been so far based onto microscale processing of metals and inorganic semiconductors as electrodes or photoactive layers in biased devices. More recently, also nanomaterials properties have been investigated. In spite of extensive research however, the communication between biological tissues and artificial sensors is still a challenge. Constraints consist in the complexity of the fabrication processes (i.e. metal and semiconductor lithography), the mechanical properties (e.g. flexibility and mechanical invasiveness) and chemical influence (e.g. inflammatory reactions). In addition, electrodes have fixed geometries that limit the location in space of the stimulus and often electrical currents are detrimental for the overall system. To this respect organic soft matter offers a chance in terms of biological affinity and mechanical properties. In particular conjugated polymers have appealing optoelectronic features which could lead to a new generation of neuronal communication and photo-manipulation techniques. So far conjugated polymers have being only tested as coatings of electrodes for neuronal activity recording. Here we report an up-scale of their use: the successful interfacing of an organic semiconductor to a network of cultured primary neurons, through optical excitation. This allows to a new paradigm for the optical stimulation of neurons which could have important implications for the development of an artificial retina based on organic photodetectors.
description: about 9 pages, 3 figures
Dynamics of optomechanical spatial solitons in dual-nanoweb structures
Creators: name: Conti, Claudio
name: Butsch, Anna
name: Biancalana, Fabio
name: Russell, Philip St. John
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically investigate the stability and dynamics of self-channelled beams that form via nonlocal optomechanical interactions in dual-nanoweb microstructured fibers. These "optomechanicons" represent a novel class of spatial soliton.
The relativistic pulsar-white dwarf binary PSR J1738+0333 II. The most stringent test of scalar-tensor gravity
Creators: name: Freire, Paulo C. C.
name: Wex, Norbert
name: Esposito-Farèse, Gilles
name: Verbiest, Joris P. W.
name: Bailes, Matthew
name: Jacoby, Bryan A.
name: Kramer, Michael
name: Stairs, Ingrid H.
name: Antoniadis, John
name: Janssen, Gemma H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: (abridged) We report the results of a 10-year timing campaign on PSR J1738+0333, a 5.85-ms pulsar in a low-eccentricity 8.5-hour orbit with a low-mass white dwarf companion (...) The measurements of proper motion and parallax allow for a precise subtraction of the kinematic contribution to the observed orbital decay; this results in a significant measurement of the intrinsic orbital decay: (-25.9 +/- 3.2) \times 10^{-15} s/s. This is consistent with the orbital decay from the emission of gravitational waves predicted by general relativity, (-27.7 +1.5/-1.9) \times 10^{-15} s/s (...). This agreement introduces a tight upper limit on dipolar gravitational wave emission, a prediction of most alternative theories of gravity for asymmetric binary systems such as this. We use this limit to derive the most stringent constraints ever on a wide class of gravity theories, where gravity involves a scalar field contribution. When considering general scalar-tensor theories of gravity, our new bounds are more stringent than the best current solar-system limits over most of the parameter space, and constrain the matter-scalar coupling constant α_0^2 to be below the 10^{-5} level. For the special case of the Jordan-Fierz-Brans-Dicke, we obtain the one-sigma bound α_0^2 < 2 \times 10^{-5}, which is within a factor two of the Cassini limit. We also use our limit on dipolar gravitational wave emission to constrain a wide class of theories of gravity which are based on a generalization of Bekenstein's Tensor-Vector-Scalar gravity (TeVeS), a relativistic formulation of Modified Newtonian Dynamics (MOND).
description: Accepted for publication in MNRAS. 18 pages in emulate MNRAS format, 9 figures and 1 table
Sparse aperture masking at the VLT I. Faint companion detection limits for the two debris disk stars HD 92945 and HD 141569
Creators: name: Lacour, S.
name: Tuthill, P.
name: Amico, P.
name: Ireland, M.
name: Ehrenreich, D.
name: Huelamo, N.
name: Lagrange, A. -M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observational data on companion statistics around young stellar systems is needed to flesh out the formation pathways for extrasolar planets and brown dwarfs. Aperture masking is a new technique that is able to address an important part of this discovery space. We observed the two debris disk systems HD 92945 and HD 141569 with sparse aperture masking (SAM), a new mode offered on the NaCo instrument at the VLT. A search for faint companions was performed using a detection strategy based on the analysis of closure phases recovered from interferograms recorded on the Conica camera. Our results demonstrate that SAM is a very competitive mode in the field of companion detection. We obtained 5 sigma high-contrast detection limits at lambda/D of 2.5x10^{-3} (ΔL' = 6.5) for HD 92945 and 4.6x10^{-3} (ΔL' = 5.8) for HD 141569. According to brown dwarf evolutionary models, our data impose an upper mass boundary for any companion for the two stars to, respectively, 18 and 22 Jupiter masses at minimum separations of 1.5 and 7 AU. The detection limits is mostly independent of angular separation, until reaching the diffraction limit of the telescope. We have placed upper limits on the existence of companions to our target systems that fall close to the planetary mass regime. This demonstrates the potential for SAM mode to contribute to studies of faint companions. We furthermore show that the final dynamic range obtained is directly proportional to the error on the closure phase measurement. At the present performance levels of 0.28 degree closure phase error, SAM is among the most competitive techniques for recovering companions at scales of one to several times the diffraction limit of the telescope. Further improvements to the detection threshold can be expected with more accurate phase calibration.
description: accepted in A&A, 9 pages
Development of Performance Measures and Revenue Projections for State Highway Transportation Systems
Creators: name: Denison, Dwight V.
name: Jepsen, Christopher
name: Gibson, Bryan
name: Wallace, Candice
name: Kreis, Doug
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2012
Subjects: subject: Transportation Engineering

description: The purpose of this report is to develop a pilot model that demonstrates how metrics can be identified and reported in a “dashboard” format to be used to monitor the progress of a transportation system in efficiently meeting established priorities. An additional component of this research is to examine the revenue implications of a shift away from the traditional funding mechanism on the financial viability of state transportation systems.
New applications of fine-grained iron oxyhydroxides as cost-effective arsenic adsorbents in water treatment
Creators: name: Usman, Muhammad
Publisher: name: TUHH Universitätsbibliothek
Year: 2020
Subjects: subject: arsenic adsorption
subject: arsenic removal
subject: membrane processes
subject: submerged membrane adsorption hybrid system
subject: dynamic membrane adsorber
subject: modeling
subject: water and wastewater treatment
classificationCode: 500
subject: Naturwissenschaften
classificationCode: 570
subject: Biowissenschaften, Biologie
classificationCode: 620
subject: Ingenieurwissenschaften

description: Die Adsorption von Arsen, einem toxischen Wasserinhaltsstoff in vielen Oberflächen- und Grundwasserressourcen, wird an zwei feinkörnigen Eisenoxyhydroxiden mittels Adsorptionstests untersucht. Die Arsenadsorption in einem durchmischten Schlammbettreaktor wird mit einer getauchten Mikrofiltrationsmembran (MF) kombiniert, um ein innovatives und kostengünstiges Wasseraufbereitungssystem zu entwickeln. Experimentell bestimmte Arsenentfernungsraten werden unter Verwendung eines entwickelten mathematischen Modells genutzt, um die Aufbereitungsleistung unter verschiedenen Betriebsbedingungen zu modellieren. Diese Arbeit bestätigt, dass feinkörnige Eisenoxyhydroxide als aktuelle Reststoffe der herkömmlicher Adsorbentienproduktion, erfolgreich in dem entwickelten Wasseraufbereitungssystem eingesetzt werden können, um so Trinkwassergrenzwerte von < 10 µg As/L zu erreichen, ohne dass es zu Fouling auf der MF-Membran kommt.
description: The adsorption of arsenic, a toxic pollutant found in surface and groundwater resources, onto two micro-sized iron oxyhydroxides as adsorbents was investigated through batch adsorption tests. Moreover, arsenic adsorption in a slurry bed reactor was combined with a submerged microfiltration (MF) membrane unit to create an innovative and cost-effective water treatment system. Experimentally determined arsenic removal rates were modeled using a developed mathematical model. This work confirms that micro-sized iron oxyhydroxides, by-products of conventional adsorbent production processes, can successfully be employed in the proposed water treatment system to achieve a drinking water standard of < 10 µg As/L without fouling of the MF membrane
On Smarandache Rings And Their Properties - Abstract
Creators: name: W.B.Vasantha Kandasamy
Publisher: name: Zenodo
Year: 2015
Subjects: Smarandache Structure
Smarandache rings

description: The new notion and a very revolutionary type of mathematics has been developed in recent days and it is well-known as "Smarandache Structures". Smarandache algebraic structures were first introduced by Florentine Smarandache and Padilla Raul in the year 1998. Since then, nearly thirty thousand mathematicians

around the world are actively pursuing research in this subject.
On Some Properties Of Smarandche Near-Rings - Abstract
Creators: name: W.B. Vasantha Kandasamy
name: T. Ramaraj
name: N.Kannappa
Publisher: name: Zenodo
Year: 2004
Subjects: Smarandache N-groups
Smarandache ideals

description: In this paper we study the notions likes Smarandache ideals in nearrings. In 2002, the notion of Smarandache ideals in near-rings was introduced and studied by near-rings was introduced and studied by W.B. Vasantha Kandasamy. Some properties about Smarandache ideals and Smarandache N-groups of near-rings have been analyzed.
S-Biloops - Abstract
Creators: name: W.B.Vasantha Kandasamy
name: Y.Showri Raju
Publisher: name: Zenodo
Year: 2003
Subjects: fuzzy bigroups

description: The concept of bigroup was started by Maggu in the year 1994. Later in the year 1998 fuzzy bigroups was defined by W.B.Vasantha and Meiyappan. Several nice characterization theorems was obtained in this direction. Loops are nothing but groups which are non associative.
Development of a Window Based Security System for Electronic Data Interchange
Creators: name: Philip, Achimugu
name: Oluwatolani, Oluwagbemi
name: Joshua, Abah
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The Electronic Data Interchange (EDI) is the exchange of standardized documents between computer systems for business use. The objective of this study is to make Electronic Data Interchange secure to use and to eliminate human intervention in the transfer of data between business partners so that productivity and efficiency can be improved and also promote its usage between two or more trading organizations. This paper provides an overview of EDI by describing the traditional problems of exchanging information in business environments and how the EDI solves those problems and gives benefits to the company that makes use of EDI. This paper also introduces the common EDI Standards and explains how it works, how it is used over the internet and the security measures implemented. The system was executed on both local area network and wide area network after a critical study of the existing EDI methods and also implemented using VB.Net programming language. Finally, an interactive program was developed that handles the transfer of files, with special attention to the security of the items that are being transferred from one computer workstation to another.
description: Submitted to Journal of Computer Science and Engineering, see http://sites.google.com/site/jcseuk/volume-7-issue-2-june-2011
Eberhard Wagner, Cannstatt I. Großwildjäger im Travertingebiet
Creators: name: Schäfer, Dieter
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2020

description: Rezension zu: Eberhard Wagner, Cannstatt I. Großwildjäger im Travertingebiet. Forschungen und Berichte zur Vor- und Frühgeschichte in Baden-Württemberg, Band 61. Kommissionsverlag Konrad Theiss Verlag, Stuttgart 1995. ISBN 3-8062-1196-5. 100 Seiten mit 68 Abbildungen, 42 Tafeln und 5 Beilagen
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 75 Nr. 2 (1997)
The energy of waves in the photosphere and lower chromosphere: II. Intensity statistics
Creators: name: Beck, C.
name: Rezaei, R.
name: Puschmann, K. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the statistics of the intensity distributions as function of the wavelength for Ca II H and the CA II IR line at 854.2 nm to estimate the energy content. We derived the intensity variations at different heights of the solar atmosphere as given by the line wings and line cores of the two spectral lines. We converted the observed intensities to absolute energy units employing reference profiles calculated in NLTE. We also converted the observed intensity fluctuations to brightness temperatures assuming LTE. The rms fluctuations of the emitted intensity are about 0.6 (1.2) W/m2 ster pm near the core of the Ca IR line (Ca II H), corresponding to intensity fluctuations of about 20% (30%). For the line wing, we find rms values of about 0.3 W/ m2 ster pm for both lines, corresponding to relative fluctuations below 5%. The rms shows a local minimum for wavelengths forming at about 130 km height, but otherwise increases from the wing to the core. The rms brightness temperature fluctuations are below 100 K for the photosphere and up to 500 K in the chromosphere. The skewness of the intensity distributions is close to zero in the outer line wing and positive throughout the rest of the spectrum. The skewness shows a pronounced maximum on locations with photospheric magnetic fields for wavelengths in between the line wing and the line core, and a global maximum at the very core for both magnetic and field-free locations. The energy content of the intensity fluctuations is insufficient to create a similar temperature rise in the chromosphere as predicted in most reference models of the solar atmosphere. The enhanced skewness between photosphere and lower solar chromosphere on magnetic locations indicates a mechanism which solely acts on magnetized plasma.
description: 13 pages, 9 figures, + 2 pages appendix, accepted for publication in A&A
Bi-Semigroups - Abstract
Creators: name: W.B. Vasantha Kandasamy
name: M. Parimala Kanthi
Publisher: name: Zenodo
Year: 2003
Subjects: S-commutative loop

description: In this paper we introduce the notion of Smarandache commutative loop (S-commutative loop) and S-strongly commutative loop. We prove a S-commutative loop is not in general a commutative loop.
S- Elements In Non-Associative Rings - Abstract
Creators: name: W.B. Vasantha Kandasamy
name: Virgin Raj
Publisher: name: Zenodo
Year: 2003
Subjects: S-zero divisors

description: In this paper we introduce the notion of S-zero divisors, S-units, S-nilpotents, S-idempotents, S-normal elements, S-semi idempotents, S-quasi regular elements in a non-associative ring which we take mainly as a loop ring.
Semi-Automaton And Automaton Using Smarandache Groupoids - Abstract
Creators: name: W.B.Vasantha Kandasamy
name: Chetry, Moon Kumar
Publisher: name: Zenodo
Year: 2003
Subjects: semi-automation

description: The construction of semi-automation and automaton which can perform sequential operations uses only the basic algebraic structure viz. free semigroups or to be more specific free monoids. Now in this paper we use in these constructions, groupoids in particular Smarandache free groupoids to study them. This study was first initiated in 2002 by W.B.Vasantha.
Thermopower with broken time-reversal symmetry
Creators: name: Saito, Keiji
name: Benenti, Giuliano
name: Casati, Giulio
name: Prosen, Tomaz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that when non-unitary noise effects are taken into account the thermopower is in general asymmetric under magnetic field reversal, even for non-interacting systems. Our findings are illustrated in the example of a three-dot ring structure pierced by an Aharonov-Bohm flux.
description: 4 pages, 3 figures
On the high-frequency quasi-periodic oscillations from black holes
Creators: name: Erkut, M. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 85-XX

description: We apply the global mode analysis, which has been recently developed for the modeling of kHz quasi-periodic oscillations (QPOs) from neutron stars, to the inner region of an accretion disk around a rotating black hole. Within a pseudo-Newtonian approach that keeps the ratio of the radial epicyclic frequency $κ$ to the orbital frequency $Ω$ the same as the corresponding ratio for a Kerr black hole we determine the innermost disk region where the hydrodynamic modes grow in amplitude. We find that the radiation flux emerging from the inner disk has the highest values within the same region. Using the flux weighted averages of the frequency bands over this region we identify the growing modes with highest frequency branches $Ω+κ$ and $Ω$ to be the plausible candidates for the high-frequency QPO pairs observed in black hole systems. The observed frequency ratio around 1.5 can therefore be understood naturally in terms of the global free oscillations in the innermost region of a viscous accretion disk around a black hole without invoking a particular resonance to produce black hole QPOs. Although the frequency ratio $/$ is found to be not sensitive to the black hole's spin which is good for explaining the high-frequency QPOs it may work as a limited diagnostic of the spin parameter to distinguish black holes with very large spin from the slowly rotating ones. Within our model we estimate the frequency ratio of a high-frequency QPO pair to be greater than 1.5 if the black hole is a slow rotator. For fast rotating black holes, we expect the same ratio to be less than 1.5.
description: 11 pages, 11 figures, already published in The Astrophysical Journal
Smarandache Double Cosets In A S-Semigroup - Abstract
Creators: name: W.B.Vasantha Kandasamy
name: J.Sujatha
name: M.Mary John
Publisher: name: Zenodo
Year: 2004
Subjects: Smarandache Algebraic structures

description: In 1998 Padilla Raul and S. Florentine introduced some new concepts on Smarandache Algebraic structures. The study of Smarandache semigroups (S-semigroups) has been extensively studied in the year 2002. In this paper we introduce and study the notion of Smarandache Double Cosets in a S-semigroup.
Clifford algebra unveils a surprising geometric significance of quaternionic root systems of Coxeter groups
Creators: name: Dechant, Pierre-Philippe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 51F15, 20F55, 15A66, 52B15

description: Quaternionic representations of Coxeter (reflection) groups of ranks 3 and 4, as well as those of E_8, have been used extensively in the literature. The present paper analyses such Coxeter groups in the Clifford Geometric Algebra framework, which affords a simple way of performing reflections and rotations whilst exposing more clearly the underlying geometry. The Clifford approach shows that the quaternionic representations in fact have very simple geometric interpretations. The representations of the groups A_1 x A_1 x A_1, A_3, B_3 and H_3 of rank 3 in terms of pure quaternions are shown to be simply the Hodge dualised root vectors, which determine the reflection planes of the Coxeter groups. Two successive reflections result in a rotation, described by the geometric product of the two reflection vectors, giving a Clifford spinor. The spinors for the rank-3 groups A_1 x A_1 x A_1, A_3, B_3 and H_3 yield a new simple construction of binary polyhedral groups. These in turn generate the groups A_1 x A_1 x A_1 x A_1, D_4, F_4 and H_4 of rank 4, and their widely used quaternionic representations are shown to be spinors in disguise. Therefore, the Clifford geometric product in fact induces the rank-4 groups from the rank-3 groups. In particular, the groups D_4, F_4 and H_4 are exceptional structures, which our study sheds new light on.
description: 20 pages, 1 figure; to appear in Advances in Applied Clifford Algebras
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 27 Nr. 11 (1974): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Smarandache Free Groupoids And Its Application To Automaton - Abstract
Creators: name: W.B.Vasantha
name: Chetry, Moon Kumar
Publisher: name: Zenodo
Year: 2004
Subjects: groupoids

description: The study of free groupoids is very new and we see that the free groupoids have its application to the theory of automaton provided they satisfy a special condition namely these free groupoids should contain at least a subset which is a free semigroup.
Entanglement study of the 1D Ising model with Added Dzyaloshinsky-Moriya interaction
Creators: name: Vahedi, Javad
name: Soltani, Mohammad Reza
name: Mahdavifar, Saeed
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have studied occurrence of quantum phase transition in the one-dimensional spin-1/2 Ising model with added Dzyaloshinsky-Moriya (DM) interaction from bi- partite and multi-partite entanglement point of view. Using exact numerical solutions, we are able to study such systems up to 24 qubits. The minimum of the entanglement ratio R $\equiv$ τ2/τ1 < 1, as a novel estimator of QPT, has been used to detect QPT and our calculations have shown that its minimum took place at the critical point. We have also shown both the global-entanglement (GE) and multipartite entanglement (ME) are maximal at the critical point for the Ising chain with added DM interaction. Using matrix product state approach, we have calculated the tangle and concurrence of the model and it is able to capture and confirm our numerical experiment result. Lack of inversion symmetry in the presence of DM interaction stimulated us to study entanglement of three qubits in symmetric and antisymmetric way which brings some surprising results.
description: 18 pages, 9 figures, submitted
Smarandache Groupoid Rings And Its Properties - Abstract
Creators: name: W.B.Vasantha Kandasamy
name: Chetry, Moon Kumar
Publisher: name: Zenodo
Year: 2003
Subjects: non-associative ring

description: The study of non-associative rings is very meagre. When we say we do not include Lie rings or Jordan rings. By a non-associative ring we mean an associative ring in which the multiplicative operation in the ring is non-associative.