Fu Jen Catholic University

About: Fu Jen Catholic University is a education organization based out in Taipei, Taiwan. It is known for research contribution in the topics: Population & Medicine. The organization has 6842 authors who have published 9512 publications receiving 171005 citations. The organization is also known as: FJU & Fu Jen.

Using ontology network analysis for research document recommendation

Abstract: Following tremendous advancement in information technology, the speed of information development has become increasingly fast-paced. Yet the overabundance of information has forced users to spend more time and resources in searching for information relevant to their needs. Today, recommendation systems already exist that provide services like filtering, customization, and others to assist users in searching for the right information. This study proposes to use ontology and the spreading activation model for research paper recommendation, hoping that it can elevate the performance of the recommendation system and also improve the shortcomings of today's recommendation systems. This study utilizes ontology to construct user profiles and makes use of user profile ontology as the basis to reason about the interests of users. Furthermore, this study takes advantage of the spreading activation model to search for other influential users in the community network environment, making a study on their interests in order to provide recommendation on related information. Based on actual experiment results, the method of ontology network analysis that combines ontology and the spreading activation model is effective in knowing the research interests of users. Hence, using the mechanism proposed in this study can make up for the insufficiencies or shortcomings of other recommendation systems. Moreover, the precision rate can be up to 93% showing that our recommendation system has a positive effect on the effectiveness of the recommendation.

Observation of an enhancement in e+e-→Υ(1S) πn+n-→Υ(2S)n+n- and (3S)n+n- production near s = 10.89 GeV

Abstract: We measure the production cross sections for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\Upsilon}(1S){\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, $\ensuremath{\Upsilon}(2S){\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, and $\ensuremath{\Upsilon}(3S){\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ as a function of $\sqrt{s}$ between 10.83 GeV and 11.02 GeV. The data consist of $8.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider. We observe enhanced production in all three final states that does not agree well with the conventional $\ensuremath{\Upsilon}(10860)$ line shape. A fit using a Breit-Wigner resonance shape yields a peak mass of $[10\text{ }{888.4}_{\ensuremath{-}2.6}^{+2.7}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.2(\mathrm{syst})]\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and a width of $[{30.7}_{\ensuremath{-}7.0}^{+8.3}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}3.1(\mathrm{syst})]\text{ }\text{ }\mathrm{MeV}/{c}^{2}$.

Multilineage differentiation and characterization of the human fetal osteoblastic 1.19 cell line: a possible in vitro model of human mesenchymal progenitors.

Abstract: The in vitro study of human bone marrow mesenchymal stromal cells (BMMSCs) has largely depended on the use of primary cultures. Although these are excellent model systems, their scarcity, heterogeneity, and limited lifespan restrict their usefulness. This has led researchers to look for other sources of MSCs, and recently, such a population of progenitor/stem cells has been found in mesodermal tissues, including bone. We therefore hypothesized that a well-studied and commercially available clonal human osteoprogenitor cell line, the fetal osteoblastic 1.19 cell line (hFOB), may have multilineage differentiation potential. We found that undifferentiated hFOB cells possess similar cell surface markers as BMMSCs and also express the embryonic stem cell-related pluripotency gene, Oct-4, as well as the neural progenitor marker nestin. hFOB cells can also undergo multilineage differentiation into the mesodermal lineages of chondrogenic and adipocytic cell types in addition to its predetermined pathway, the mature osteoblast. Moreover, as with BMMSCs, under neural-inducing conditions, hFOB cells acquire a neural-like phenotype. This human cell line has been a widely used model of normal osteoblast differentiation. Our data suggest that hFOB cells may provide for researchers an easily available, homogeneous, and consistent in vitro model for study of human mesenchymal progenitor cells.