Binary Pulsar Tests of General Relativity in the Presence of Low-Frequency Noise

The influence of the low-frequency timing noise on the precision of measurements of the Keplerian and post-Keplerian orbital parameters in binary pulsars is studied. Fundamental limits on the accuracy of tests of alternative theories of gravity in the strong-field regime are established. The gravitational low-frequency timing noise formed by an ensemble of binary stars is briefly discussed.Comment: 4 pages, contributed paper to the proceedings of the IAU167 colloquium on pulsars, Bonn, August-September 199

On approximations by trigonometric polynomials of classes of functions defined by moduli of smoothness

In this paper, we give a characterization of Nikol'ski\u{\i}-Besov type classes of functions, given by integral representations of moduli of smoothness, in terms of series over the moduli of smoothness. Also, necessary and sufficient conditions in terms of monotone or lacunary Fourier coefficients for a function to belong to a such a class are given. In order to prove our results, we make use of certain recent reverse Copson- and Leindler-type inequalities.Comment: 18 pages. arXiv admin note: substantial text overlap with arXiv:1208.612

Folsomia abrupta n. sp. (Collembola, lsotomidae) from southern Vietnam

A new lsotomid Collernbola, Folsomia abrupta n. sp., is described from the Bi Doup massif in southern Vietnam, where it frequently occurs in rnedium to high altitude forest soils. Together with F: minipunctata Zhao & Tamura, 1992 from China, it constitutes a well-defined species group restricted to Sou~heasAt sia. Key woras: Collembola, Isotomidae, Folsomia abrupta n. sp., New species, Vietnam.A new lsotomid Collernbola, Folsomia abrupta n. sp., is described from the Bi Doup massif in southern Vietnam, where it frequently occurs in rnedium to high altitude forest soils. Together with F: minipunctata Zhao & Tamura, 1992 from China, it constitutes a well-defined species group restricted to Sou~heasAt sia. Key woras: Collembola, Isotomidae, Folsomia abrupta n. sp., New species, Vietnam.A new lsotomid Collernbola, Folsomia abrupta n. sp., is described from the Bi Doup massif in southern Vietnam, where it frequently occurs in rnedium to high altitude forest soils. Together with F: minipunctata Zhao & Tamura, 1992 from China, it constitutes a well-defined species group restricted to Sou~heasAt sia. Key woras: Collembola, Isotomidae, Folsomia abrupta n. sp., New species, Vietnam

Towards Semantic Fast-Forward and Stabilized Egocentric Videos

The emergence of low-cost personal mobiles devices and wearable cameras and the increasing storage capacity of video-sharing websites have pushed forward a growing interest towards first-person videos. Since most of the recorded videos compose long-running streams with unedited content, they are tedious and unpleasant to watch. The fast-forward state-of-the-art methods are facing challenges of balancing the smoothness of the video and the emphasis in the relevant frames given a speed-up rate. In this work, we present a methodology capable of summarizing and stabilizing egocentric videos by extracting the semantic information from the frames. This paper also describes a dataset collection with several semantically labeled videos and introduces a new smoothness evaluation metric for egocentric videos that is used to test our method.Comment: Accepted for publication and presented in the First International Workshop on Egocentric Perception, Interaction and Computing at European Conference on Computer Vision (EPIC@ECCV) 201

Some reverse lpl_p-type inequalities involving certain quasi monotone sequences

In this paper, we give some $l_p$-type inequalities about sequences satisfying certain quasi monotone type properties. As special cases, reverse $l_p$-type inequalities for non-negative decreasing sequences are obtained. The inequalities are closely related to Copson's and Leindler's inequalities, but the sign of the inequalities is reversed.Comment: 7 pages, Communicated in the Eighth Congress of Romanian Mathematicians, Iasi, Romania, 201