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Hussein Kanaan,Alireza Behrad 한국정보처리학회 2020 Journal of information processing systems Vol.16 No.2
In this paper, a new algorithm is proposed for threedimensional (3D) shape recognition using local features ofmodel views and its sparse representation. The algorithm starts with the normalization of 3D models and theextraction of 2D views from uniformly distributed viewpoints. Consequently, the 2D views are stacked overeach other to from view cubes. The algorithm employs the descriptors of 3D local features in the view cubesafter applying Gabor filters in various directions as the initial features for 3D shape recognition. In the trainingstage, we store some 3D local features to build the prototype dictionary of local features. To extract an intermediatefeature vector, we measure the similarity between the local descriptors of a shape model and the localfeatures of the prototype dictionary. We represent the intermediate feature vectors of 3D models in the sparsedomain to obtain the final descriptors of the models. Finally, support vector machine classifiers are used torecognize the 3D models. Experimental results using the Princeton Shape Benchmark database showed theaverage recognition rate of 89.7% using 20 views. We compared the proposed approach with stateoftheartapproaches and the results showed the effectiveness of the proposed algorithm.
Wesam Al Khateeb,Razan Kanaan,Tamam El-Elimat,Muhammad Alu’datt,Jamil Lahham,Ahmad El-Oqlah 한국원예학회 2017 Horticulture, Environment, and Biotechnology Vol.58 No.4
Lavenders (Lavandula species) are important aromatic ornamental medicinal plants with wide rangingapplications in perfume and pharmaceutical industries. We developed an in vitro propagation protocol for Lavandulacoronopifolia. Murashige and Skoog (MS) medium supplemented with 0.5 mg・L-1N6-benzyladenine was the bestmedium for the proliferation of microshoots, while the highest rooting frequency was obtained using MS mediumsupplemented with 1.0 mg・L-1indole-3-butyric acid. Inter-simple sequence repeat analysis revealed that the invitro-propagated microshoots were highly genetically stable, even after subculture. The highest callus fresh weight(667.9 mg) was obtained by propagating on medium supplemented with a combination of 1.0 mg・L-1naphthaleneaceticacid and 0.5 mg・L-1butyric acid. Using the Folin-Ciocalteu method, methanolic extracts of wild L. coronopifoliarevealed total phenolic content of 4.9 mg expressed in gallic acid equivalents (GAE) (mg GAE・g-1dry matter). Radicalscavenging activity was estimated at 85% using the free radical 2,2-diphyenyl-picrylhydrazyl assay. Using the brineshrimp assay for cytotoxicity, the methanolic extract was found to be nontoxic. Finally, liquid chromatography tandemmass spectrometry with standard reference compounds was used to quantify the key phenolic compounds in both invitro and in vivo-grown L. coronopifolia. Six major phenolic compounds were identified: caffeic acid, rosmarinic acid,rutin, quercetin, luteolin, and hesperidin. Levels of these phenolic compounds were highest in wild plant extracts.
Provencal, J. L.,Montgomery, M. H.,Kanaan, A.,Thompson, S. E.,Dalessio, J.,Shipman, H. L.,Childers, D.,Clemens, J. C.,Rosen, R.,Henrique, P.,Bischoff-Kim, A.,Strickland, W.,Chandler, D.,Walter, B.,Wat IOP Publishing 2012 The Astrophysical journal Vol.751 No.2
<P>We report on an analysis of 308.3 hr of high-speed photometry targeting the pulsating DA white dwarf EC14012-1446. The data were acquired with the Whole Earth Telescope during the 2008 international observing run XCOV26. The Fourier transform of the light curve contains 19 independent frequencies and numerous combination frequencies. The dominant peaks are 1633.907, 1887.404, and 2504.897 mu Hz. Our analysis of the combination amplitudes reveals that the parent frequencies are consistent with modes of spherical degree l = 1. The combination amplitudes also provide m identifications for the largest amplitude parent frequencies. Our seismology analysis, which includes 2004-2007 archival data, confirms these identifications, provides constraints on additional frequencies, and finds an average period spacing of 41 s. Building on this foundation, we present nonlinear fits to high signal-to-noise light curves from the SOAR 4.1 m, McDonald 2.1 m, and KPNO 2 m telescopes. The fits indicate a time-averaged convective response timescale of tau(0) = 99.4 +/- 17 s, a temperature exponent N = 85 +/- 6.2, and an inclination angle of theta(i) = 32 degrees.9 +/- 3 degrees.2. We present our current empirical map of the convective response timescale across the DA instability strip.</P>
2006 WHOLE EARTH TELESCOPE OBSERVATIONS OF GD358: A NEW LOOK AT THE PROTOTYPE DBV
Provencal, J. L.,Montgomery, M. H.,Kanaan, A.,Shipman, H. L.,Childers, D.,Baran, A.,Kepler, S. O.,Reed, M.,Zhou, A.,Eggen, J.,Watson, T. K.,Winget, D. E.,Thompson, S. E.,Riaz, B.,Nitta, A.,Kleinman, S IOP Publishing 2009 The Astrophysical journal Vol.693 No.1
Turki A. Al-Ajmi,Khalid H. Al-Faryan,Naif F. Al-Kanaan,Abdulmalik A. Al-Khodair,Thamer H. Al-Faryan,Maher I. Al-Oraini,Abdulelah F Bassas 대한정형외과학회 2018 Clinics in Orthopedic Surgery Vol.10 No.1
Background: Surgical and conservative methods have been reported by various studies for high rates of fracture union and subsequent regain of function among patients with undisplaced or minimally-displaced scaphoid fractures. Hence, this study aims to analyze the best available evidence to comprehend the relative benefits and risks of these therapeutic options. Methods: A systematic search of the literature from different databases and search engines was performed with strict eligibility criteria to obtain the highest quality of evidence. All randomized controlled trials delineating the outcomes of surgical versus conservative treatments for acute undisplaced or minimally-displaced scaphoid fractures were included and then evaluated using scoring tools: Cochrane risk of bias tool and PEDro scale. Data were pooled using random-effects models with standard mean differences for continuous outcomes and risk ratios for dichotomous variables. Results: The search yielded 339 potentially related articles, further trimmed down to eight studies based on the eligibility criteria. The meta-analysis revealed that surgical treatment resulted in significantly better functional outcomes than conservative treatment. Furthermore, surgery resulted in the prevention of delayed union of fractures and reduction of time needed to return to work. Conclusions: While four studies reported advantages of surgical treatment, evidence was insufficient to provide a definitive conclusion that surgery is a better option. Due to the significant limitations with respect to certain variables, the superiority of one method to the other could not be established.
Redaelli, M.,Kepler, S. O.,Costa, J. E. S.,Winget, D. E.,Handler, G.,Castanheira, B. G.,Kanaan, A.,Fraga, L.,Henrique, P.,Giovannini, O.,Provencal, J. L.,Shipman, H. L.,Dalessio, J.,Thompson, S. E.,Mu Blackwell Publishing Ltd 2011 Monthly notices of the Royal Astronomical Society Vol.415 No.2
<P><B>ABSTRACT</B></P><P>PG 1351+489 is one of the 20 DBVs – pulsating helium‐atmosphere white dwarf stars – known and has the simplest power spectrum for this class of star, making it a good candidate to study cooling rates. We report accurate period determinations for the main peak at 489.334 48 s and two other normal modes using data from the Whole Earth Telescope (WET) observations of 1995 and 2009. In 2009, we detected a new pulsation mode and the main pulsation mode exhibited substantial change in its amplitude compared to all previous observations. We were able to estimate the star's rotation period, of 8.9 h, and discuss a possible determination of the rate of period change of (2.0 ± 0.9) × 10<SUP>−13</SUP> s s <SUP>−1</SUP>, the first such estimate for a DBV.</P>
The pulsation modes of the pre-white dwarf PG 1159-035
Costa, J. E. S.,Kepler, S. O.,Winget, D. E.,O'Brien, M. S.,Kawaler, S. D.,Costa, A. F. M.,Giovannini, O.,Kanaan, A.,Mukadam, A. S.,Mullally, F.,Nitta, A.,Provenç,al, J. L.,Shipman, H.,Wood, M. A EDP Sciences 2008 Astronomy and astrophysics Vol.477 No.2