Kyungpook National University

About: Kyungpook National University is a education organization based out in Daegu, South Korea. It is known for research contribution in the topics: Population & Catalysis. The organization has 20497 authors who have published 42107 publications receiving 834608 citations.

The Effect of Experience Quality on Perceived Value, Satisfaction, Image and Behavioral Intention of Water Park Patrons: New versus Repeat Visitors

Abstract: This study proposed a conceptual model to examine how customers' perceptions of the quality of experiences influence perceived value, water park image, customer satisfaction and behavioral intentions for first-time and repeat customers of the water park of the tourism industry This study finds that the quality of participants' experiences significantly affects perceived value, water park image and customer satisfaction Moreover, perceived value and water park image exert a direct influence on customer satisfaction, and they also positively affect behavioral intentions Finally, the impacts on customer satisfaction of experience quality and water park image significantly differ between first-time and repeat customers Copyright © 2013 John Wiley & Sons, Ltd

Turboiso: towards ultrafast and robust subgraph isomorphism search in large graph databases

Abstract: Given a query graph q and a data graph g, the subgraph isomorphism search finds all occurrences of q in g and is considered one of the most fundamental query types for many real applications While this problem belongs to NP-hard, many algorithms have been proposed to solve it in a reasonable time for real datasets However, a recent study has shown, through an extensive benchmark with various real datasets, that all existing algorithms have serious problems in their matching order selection Furthermore, all algorithms blindly permutate all possible mappings for query vertices, often leading to useless computations In this paper, we present an efficient and robust subgraph search solution, called TurboISO, which is turbo-charged with two novel concepts, candidate region exploration and the combine and permute strategy (in short, Comb/Perm) The candidate region exploration identifies on-the-fly candidate subgraphs (ie, candidate regions), which contain embeddings, and computes a robust matching order for each candidate region explored The Comb/Perm strategy exploits the novel concept of the neighborhood equivalence class (NEC) Each query vertex in the same NEC has identically matching data vertices During subgraph isomorphism search, Comb/Perm generates only combinations for each NEC instead of permutating all possible enumerations Thus, if a chosen combination is determined to not contribute to a complete solution, all possible permutations for that combination will be safely pruned Extensive experiments with many real datasets show that TurboISO consistently and significantly outperforms all competitors by up to several orders of magnitude

A tomato (Solanum lycopersicum) APETALA2/ERF gene, SlAP2a, is a negative regulator of fruit ripening

Abstract: The transition of fleshy fruit maturation to ripening is regulated by exogenous and endogenous signals that coordinate the transition of the fruit to a final state of attractiveness to seed dispersing organisms. Tomato is a model for biology and genetics regulating specific ripening pathways including ethylene, carotenoids and cell wall metabolism in addition to upstream signaling and transcriptional regulators. Ripening-associated transcription factors described to date including the RIN-MADS, CLEAR NON-RIPENING, TAGL1 and LeHB-1 genes all encode positive regulators of ripening phenomena. Here we describe an APETALA2 transcription factor (SlAP2a) identified through transcriptional profiling of fruit maturation that is induced during, and which negatively regulates, tomato fruit ripening. RNAi repression of SlAP2a results in fruits that over-produce ethylene, ripen early and modify carotenoid accumulation profiles by altering carotenoid pathway flux. These results suggest that SlAP2a functions during normal tomato fruit ripening as a modulator of ripening activity and acts to balance the activities of positive ripening regulators.

Sterile Neutrino Search at the NEOS Experiment.

Abstract: An experiment to search for light sterile neutrinos is conducted at a reactor with a thermal power of 2.8 GW located at the Hanbit nuclear power complex. The search is done with a detector consisting of a ton of Gd-loaded liquid scintillator in a tendon gallery approximately 24 m from the reactor core. The measured antineutrino event rate is 1976 per day with a signal to background ratio of about 22. The shape of the antineutrino energy spectrum obtained from the eight-month data-taking period is compared with a hypothesis of oscillations due to active-sterile antineutrino mixing. No strong evidence of $3+1$ neutrino oscillation is found. An excess around the 5 MeV prompt energy range is observed as seen in existing longer-baseline experiments. The mixing parameter ${\mathrm{sin}}^{2}2{\ensuremath{\theta}}_{14}$ is limited up to less than 0.1 for $\mathrm{\ensuremath{\Delta}}{m}_{41}^{2}$ ranging from 0.2 to $2.3\text{ }{\mathrm{eV}}^{2}$ with a 90% confidence level.

Observation of an Exotic S = +1 Baryon in Exclusive Photoproduction from the Deuteron

Abstract: In an exclusive measurement of the reaction {gamma}d {yields} K{sup +} K{sup -} p n, a narrow peak that can be attributed to an exotic baryon with strangeness S = +1 is seen in the K{sup +}n invariant mass spectrum. The peak is at 1542 {+-} 5 MeV/c{sup 2} with a measured width of 21 MeV/c{sup 2} FWHM, equivalent to the experimental invariant mass resolution. The statistical significance of the peak is 5.3 {+-} 0.5 {sigma} for a Gaussian peak shape on top of a smooth background.